Application for portable power management is becoming a dazzling bright spot in the semiconductor field. According to market research firm CIR's market report points out that within the next few years based on the application of portable power devices is very optimistic about the laptop battery market prospects, the 2004 sales revenue is expected to reach 4.3 billion U.S. dollars, and in 2008 rose sharply to 7.2 billion U.S. dollars.

Portable devices in the growing of new features, power management will create substantial new demand. At the same time, portable device manufacturers are facing increasing pressure, they inspiron battery need to integrate these functions is shrinking in size, at the same time to maintain it longer working hours.

For example, with the arrival of 3 G, cell phones not only to visit the website, send e-mail, take digital photos, or even be able to play video streaming, power management brought all of these enormous challenges. At the same time, with the acceleration of processor speed, the power management programmes and the various subsystems must keep pace with this change, supporting the provision of support for power. In addition, the new Inspiron 8000 battery technology, especially micro-fuel cell technology business and will soon begin, forcing power chip makers to rethink the future of the power system design.

Accordingly, these new trends for power chip makers have created tremendous business opportunities, encourage them to racking their brains develop more advanced, more and more with their own characteristics and size of a small power management solutions, to support the increasingly complex System power requirements and new features. In order to comprehensive and in-depth understanding  VGP-BPL2 of today's portable applications of the latest trend of power management, the paper invited leading semiconductor company Texas Instruments (TI), flying trillion (Fairchild), Linear Technology (Linear), ON, the semi-(NS), micro-batteries Science and Technology (Microchip) and Li Qi technology to share their insights and wisdom.

Supercapacitor with a wide range of uses. Fuel cells and high energy density of the material by combining super-capacitors can provide rapid release of energy to meet the high power demand, thus making fuel cells can be used only as a source of energy. At present, the energy density supercapacitor can be as high as 20 kW / kg, has begun to seize the traditional capacitors and laptop laptop battery between this part of the market.

In those high requirements for reliability and energy Yaoqiubugao applications, super-capacitors can be used to replace the compaq battery, can also be super-capacitors and batteries combine the application in the high energy demands of the occasion, which can be used in a smaller And more economical battery.

Supercapacitors the low ESR values, which can be large current output, but also can quickly absorb large current. Compared with the principle of charging, super-capacitors to the principle of the performance of the product more stable, so supercapacitor longer life. Like electrical tools and toys that need rapid charging equipment, super-capacitors is a very good power Armada E500 battery.

Some products suitable for battery / supercapacitor hybrid systems, the use of super-capacitors can be avoided in order to get more energy and the use of the large volume of batteries. Such as consumer electronics products in the digital camera is an example, the use of super-capacitors can be used to digital cameras cheaper alkaline batteries (instead of using expensive Li ion Armada M700 battery).

Supercapacitor unit (cell) is rated voltage range of 2.5 ~ 2.7 V, therefore, many applications need to use multiple super capacitor unit. When the series of these units, the design engineers need to consider the balance between the unit and charging the situation.

Any super power capacitors will be the case, through an internal parallel resistance discharge, the discharge current is called the leakage current, it will affect the super capacitor unit self-discharge. With some secondary Armada V300 battery technology similar to the super-voltage capacitors used in tandem need to balance, because of the leakage current, parallel internal resistance will determine the size of the Super Series on the capacitor voltage distribution unit. When the super-capacitors on the voltage stability, the voltage on the various units will be as different and the leakage current changes, rather than with the capacity of different changes. Leakage current is, the smaller the rated voltage, the contrary, the leakage of small, high-rated voltage. This is because the leakage would create super-capacitors discharge unit, the lower voltage Business Notebook nc6000 battery, and the voltage will then influence and its tandem with other units of the voltage (the thread here assume that these units are used with a constant voltage power supply) .

To compensate for leakage current of change, often the method used is that in each unit next to a parallel resistance, the entire unit to control the leakage current. This method is effective in reducing the unit corresponding parallel between the resistance changes.

Ni-Cd battery charger according to their degree of technical improvement can be divided into many types, the simplest one is to slow the laptop battery Chargers, Chargers general this is a fixed output voltage of DC transformer, depending on the size of the charge current transformer Plus internal resistance or the size of resistance.

Slow charging for nickel-hydrogen batteries or nickel-cadmium hp laptop battery is negative, because the process of charging the heat will continue to accelerate the aging batteries. Cheap charger normally does not slow the charge current to a good filter, so the battery of serious damage to many.

For nickel-hydrogen batteries and nickel-cadmium Presario V2000 battery charger optimize the design of the rapid technically much more complex, the Chargers general design of current regulator, the pressure limiting protection circuit and charge control circuit. Rechargeable batteries under the control circuit to the temperature (and / or terminal voltage) calculation of the charge current and charge time, and make the appropriate adjustment charge until the end of the process.

Determine whether the battery fully charged, at present there are two standard algorithm, often referred to as "negative voltage Act" (- ¦¤ V) and the "temperature method" (¦¤ T). To use these two algorithms, the charge current must be not less than 0.2 C, so as to allow the Pavilion DV1000 battery have a significant temperature rise or voltage drop, thereby determine charging effect. (As shown in Figure 1)

Some of the traditional nickel-cadmium battery chargers to be transformed so that it can be for nickel-hydrogen batteries and / or lithium-ion batteries. It was found that as long as a few changes, nickel-cadmium Pavilion ZV5000 battery charging method can be used for nickel-hydrogen batteries.

However, to make an adaptation of three battery chargers at the same time is not so easy. First, it must pass a certain way (such as the selection switch, EPROM, etc.) to identify lithium-ion Pavilion DV4000 battery; Second, a more sophisticated reference source to design pressure limiting protection circuit; third, to use the continuous current - for charging voltage algorithm (CCVV).

Because of backward compatibility, this design concept has been widely used, it allows people to enjoy the performance of lithium-based batteries advantage, with the safety of lithium-ion batteries replace the "hot personality" of lithium batteries for high prices The lithium-ion Presario V2000 battery protection circuit at an early date and its related market cleared the obstacles.

In a small digital camera, two cell structure has become mainstream. There are two common AA batteries (alkaline or Ni-MH) or a lithium laptop battery. Sometimes the camera will be designed at the same time with two batteries. This structure will give power designers a special challenge, because, some time will need to upgrade the battery voltage to generate a specific voltage (for example, 3.3 V). In other times, we must reduce the battery voltage to generate the same voltage. This requires a l / buck (or buck / boost) design. In the old design of the camera, sometimes the use of anti-IP (based on transformer) designed to solve this problem, huge, very clumsy and inefficient - often less than 70 percent efficiency.

With multiple groups of the output of integrated design can be very easy to get buck / boost converters, used only to boost the power supply for the buck converter can be. This method in the past hp laptop battery have not been widely used to solve the buck / boost problems, because it requires a separate buck and boost a high level of efficiency, can get enough of efficiency. However, the current mode boost and buck converter can reach 95 percent of the efficiency of the composite efficiency to 90 percent, far better than flyback and SEPIC design can achieve the target.

Under what circumstances the manner in which the construction of buck-boost converter depends on the battery type. 2 AA batteries work in the 1.8 V to 3.6 V, and a lithium battery work in the 2.7 V to 4.2 V. Single lithium battery-powered design will need to buck / boost converters produce 3.3 V. Use two AA batteries of the design may also be used buck / boost converter, because the DSP nuclear power (typical for the 1.5 V or 1.8 V) when the F2024B is heavy because not enough voltage headroom and not directly from the battery-powered . In both cases, can even grade through the DC-DC converters are highly efficient buck / boost converters. 3.3V power supply through the first boost to 5 V (VSU 5V, Figure 2), and then to 3.3 V buck by (VM 3.3V, 2). 1.8V power supply can also use the same 5 V-driven buck converter input (PVSD) and received. Of course, single-use lithium batteries, used in the relief core power directly from the battery-driven (as shown in Figure 2).

Compact digital camera could use a smaller F2299A. Of course, the smaller the battery to a higher efficiency requirements. In addition, smaller batteries can not be as large as the battery supply peak load, power management system must be shut down frequently do not have the power to extend battery life. When power again opened, it should not draw the battery voltage will pull down the high current. Figure 2 shows the integrated power to gradually raise the controlled rate of all imported and therefore the commencement of converters, the input inrush current was reduced to a minimum. It also ensure that the output to predict the way up to facilitate the power sequencing

Battery technology change has been slow, unlike other fast-changing technology that gives people the feeling of adventure stimulation. 1800, Alessandro Volta invented the first Earl of a battery. Until 200 years after it emerged a major breakthrough: nickel chromium (NiCd) batteries. Since there has NiCd battery, have passed more than 40 years. But recently, two important forces have accelerated the changes in battery technology and laptop battery technology push to the forefront. First, the environmental concerns require replacement NiCd battery in the role of toxic chromium. Second, consumers of battery-powered portable products to demand
Is the rapid growth.
As a result, portable battery and a rechargeable battery in the battery industry has tremendous growth. Because so many hand-held wireless products require batteries as a power source, the thinkpad battery manufacturers have been putting in a lot of R & D to make batteries safer, more lightweight and have a higher energy density. This has always been to replace the nickel-chromium or nickel-metal hydride (NiMH) battery lithium batteries the main driver of growth.
There is no doubt that lithium-ion (Li-Ion) battery is the most technically advanced of a rechargeable battery. Its longer running time and in accordance with the protection of the environment to meet the demands of today's advanced information technology professionals demand. Compared with the NiMH battery types, lithium-ion battery is one of the main advantages of "no memory." NiMH batteries and different, lithium-ion batteries can discharge its cycle in a time of the rechargeable, and can maintain a very high charging efficiency, and more than older NiMH batteries to more than double. A rechargeable lithium ThinkPad T22 battery Another advantage is its weight, its energy density is three times the NiCd battery, but only half of its weight.
Lithium-ion batteries since the early 1990s since its introduction in portable power applications has become a major role, it has almost become cellular phones, personal digital assistant (PDA), digital camera (DSC) and MP3 players, the only powerÑ¡Ôñ. Large portable products need to increase the battery capacity and is a mature lithium-ion battery technology to increase capacity as possible.
Modern cellular phones, MP3 players and digital cameras (DSC) usually use 1 Ah to the battery capacity of 1.2 Ah, but sub-notebook computers may use 1.5 Ah to 2 Ah capacity ThinkPad T23 battery. Linear Technology Corporation currently used thermal regulation technology linear battery charger series has been successfully resolved the charger IC when the device is internal, high current linear regulators cause of the potential heating problems. Because the battery capacity has increased, and rapid charging the request still exist, so to maintain a reasonable demand that PCB temperature linear thermal regulation technology will become increasingly important.
And the "standard" than the lithium-ion battery, a new phosphate cathode of lithium-ion ThinkPad T30 battery has demonstrated a broader application. This update of the chemical composition to enhance the safety and reduce costs, but lower output voltage, if the use of the general 5 V wall adapter based on the linear regulators and the charger to recharge, then more Low output voltage will cause more heat problems. Therefore, this will require the use of switching or pulse charging solution.

On how to promote more environmentally friendly electronic products, we can look at Freescale's TPMS (tire pressure monitoring systems). As we all know, TPMS is a security surveillance system to monitor tire pressure and temperature, pressure will be over security laptop battery alarm to the driver. Motorola or FSL is the first company to enter this field, began in 1985. Over the years, the U.S. government must enact legislation to require the installation of small car TPMS. We can also see other countries are also beginning to take this measure, China is actively promoting the installation of the system of large vehicles. Freescale's TPMS solutions in the built-in RF IC packaging equipment ThinkPad T23 battery, sensors and MCU, can be easily placed in automobile tires and sustained manner. Materials used by the RoHS-compliant, will be integrated on a single variety of smart devices means that fewer devices. In addition, we have the pressure, acceleration is also used in the test car running, there is no need to run IC, therefore need only a very small thinkpad battery energy. Our TPMS very long life (usually 8 to 10), significantly more than the life of the tire. This is what we in the packaging, design, the system (software and hardware) and device level achieved by the results in our efforts to find ways to minimize the use of the resources. Freescale will continue to help improve the production machinery, automobiles, electronic systems and energy and fuel efficiency of products, but also to improve our lives.

So far, and are referred for more environmental protection of our environment and in the products we use every day in the application of the efforts. Billions of e-waste pile and the inefficient use of ThinkPad T20 battery power to affect our ecosystem and our environment for the survival of a huge threat, we need now to deal with this problem, can not be left to a future. Government and large companies to take more measures to improve the polluted environment and guide you in this direction. Freescale is no exception, in their products through the use of more environmentally friendly materials and design features to improve our environment. In addition, Freescale also supervise the design and production employees require less energy ThinkPad T22 battery, more efficient, environment-friendly products. This is reflected not only in products but also a global plan such as the EPP - Environmentally Preferred Products program. EPP is Freescale for the customer and product content requirements for the efforts made, including the European Community and China RoHS directives and guidelines filler.

No need to repeat, our population is increasing, we also want the new technology than ever before to the more fierce. We need more responsible, more proactive in making our environment cleaner more friendly.

The use of portable electronic products, can at any time that the remaining laptop battery power, working hours, and the application of this regulation, it is undoubtedly a very easy matter, particularly the use of smart phones or PDA mobile phone business people. Battery detection technology in notebook computers has been a common occurrence, most notebook computers have power management "> power management options, with different power modes of operation and battery alarm function, but in smaller and more portable product market, this technology Also rare.
     Portable products provided by the increasingly complex functions, users increasingly require accurate monitoring of hp laptop battery power, so a flexible management of available power, clearly shows that the remaining work time, as far as possible extension of the system is running. Most cell phones now use the power measurement method is relatively simple, the lack of precision. According to the company in charge of TI's portable power products engineers Xin He Long, the current mainstream detection method is a simple measure battery voltage, and then divided by 4 or 5, which is normally on the screen and see four or five grid of the electricity grid Bar, so The accuracy of each grid that is 20 percent or 25 percent, when the battery voltage at 2.9 V-2.7V when power will be shut down. Long Xin He pointed out that although the work of mobile phone battery voltage between 2.9 V-4.2V, but under normal circumstances, the stability of operating voltage range is 3.6 V-3.8V, in this area outside the battery discharge rate is very fast, can not To maintain adequate working hours.
     The current standard of electricity through the detection method of calculation Coulomb (Coulomb Counting) test current, voltage and temperature, and integrates the current time. This approach needs batteries and F2019B manufacturers, through the static modeling techniques based on the battery discharge rate, temperature and aging compensation, the self-discharge rate and other Bukeceliang of the current model. As model itself on the existence of error, and it is difficult to minimize, so users difficult to accurately understand the aging batteries and the actual running time, can only rely on past experience to make up for.
     Battery detection technology will be introduced to the phone can be accurately measured in single lithium-ion battery of data, so that under all conditions (and even cell aging) to calculate the remaining F1739A power. TI's Impedance Track (impedance tracking) technology 2 years has been successfully applied in the notebook market, TI has introduced for single battery power detection chip bq27500, used in cell phones. The micro and small IC can compare the battery voltage, battery impedance or resistance, and the current score, accurate analysis of the charging status, according to calculations of the discharge curve upward or downward the remaining charge state.
     bq27500 system is used in the chip side, the host system circuit board used to support embedded or removable F3172A. Xin He pointed out that system-side implementation of the programme are the advantages do not need the battery on the integrated electronic components, batteries can effectively control the size and cost, but also to control and management of other major battery management features, such as batteries certification (which is used for cell phone manufacturers Its own brand name products in the OEM battery performance of the certification).

Boston-Power Corporation announced that its new generation of lithium-ion batteries to be on the market. This innovative technology to a new generation of lithium-ion laptop battery production in China, for manufacturers, OEM manufacturers and consumers excellent low-cost alternative.

Boston-Power longer battery life, faster charging and has a unique chemical and design characteristics, to ensure product safety. In addition, Boston-Power's product and process design are in line with environmental requirements, can bring benefits for the Chinese market.

Boston-Power CEO Dr. Christina Lampe-Onnerud said: "Pocket PC, PDA and mobile phones and other portable devices on which the existing hp batteries technology, the evolution has reached a critical juncture in the process. Boston-Power play by an outstanding team Can and expertise, we achieved a real breakthrough: to design a specific application of lithium-ion battery, both the quality and safety have been significantly improved, and the performance of the industry also created a precedent. "

Consumers around the world to get longer F2019B life of the requirements of sustained growth. However, the industry on a higher initial capacity and the pursuit of a more low-cost batteries are often at the expense of the performance and quality for price. In recent years, appeared one after another due to battery failure caused the fire accident also caused people to product safety concerns. Boston-Power's new battery system design using proprietary security features, including a slower rate of chemical kinetics, novel current interrupt devices, wire and valves, and other hot-melt completely overcome these challenges.

Boston-Power ™ of environment-friendly batteries can be "universally applicable" (drop in) at the existing OEM notebook computer. Sonata ™ battery capacity to provide unparalleled anti-decay (run-time retention) capacity, more traditional longer battery life, but also in notebook computers typical life of three years, its F1739A can maintain its strong performance as New. Currently, most laptop users to use this period will need to buy more batteries. In addition, Sonata can also provide users with the industry's fastest recharge rate: in just 30 minutes to up to 80 percent of full capacity, a different notebook computers using the standard battery fast about 50% to 200%.

Dr. Lampe-Onnerud, commented: "We hope that the first notebook computer batteries to overcome the challenges faced, and then gradually be applied to other solutions on mobile devices because the Chinese in the lithium-ion F3172A production is gradually winning market position, so it Our strategy plays an important role. Many people believe that in the next 5-7 years, we will see China than anywhere in the world are faster in technological innovation and product development innovation. "

Boston-Power battery design and manufacturing have to create a cleaner, more secure environment for the purpose. The Boston-Power, security issues must not be compromised, nor with the additional properties for replacement. Boston-Power's first product line Sonata notebook computer batteries, the use of the low activity of the chemicals, and to add multiple Protection and Control. Independent test results show that, Sonata F2024A not to use harmful heavy metals, metal pollution is reduced to a minimum. Therefore, Sonata is the only internationally recognized environmental agencies to win certification of the rechargeable lithium-ion battery.

Boston-Power is headquartered in the United States, the world recognized by the battery industry authority Dr. Christina Lampe-Onnerud founded and served as chief executive officer. Dr. Christina Lampe-Onnerud established a world-class team, combined with the lithium-ion F2024B technology with more than 100 years of rich experience. Boston-Power enjoyed a strong intellectual property portfolio, will be able to develop new chemical breakthrough innovation and integration of the battery. The company's battery using the industry's best Six Sigma (Six Sigma) manufacturing technology production, a comprehensive quality control, and an enhanced security features

Permanent engineers should be used in the devices, and designed specifically for users of security software. In the design of these applications, engineers must ensure that these procedures will not be sustained on the implementation of the CPU. At the same time, security software must also be taken into account in order to make these applications under the state no longer idle in the implementation or consumption of electricity laptop battery. (If the application to polling mode of implementation, it will make CPU power consumption has been running even.) Security software on the equipment must be oriented not synchronized events. It must be very small code space and CPU utilization for the design objectives, so as to the rapid pace of the implementation of the mandate.

To ensure the safety of mobile devices, the need for a more complex and comprehensive approach, it must be the whole equipment and the implementation of the wireless environment as the overall considerations. Action power management for the future needs of a wide range of 'equipment inspirion battery security framework', to ensure that any equipment connected equipment information access and communications all aspects of security and power requirements can be perceived. In order to achieve this goal, equipment security framework must include the Permanent software, and network transmission through the safety performance.

When the security of individual performance came from different places, but can not effectively with the entire equipment and other functional integration, will seriously affect the size, performance and Latitude C600 battery life of mobile devices.

As security has become a specialized field, how to effectively implement the security of mobile devices and to avoid affecting performance, we must have professional knowledge. Clearly, the development of equipment for mobile applications, security can no longer post as a remedial plan. Success depends on users of mobile devices to use the positive experience, and not on personal Latitude C640 battery or data security have any impact.
Improve the safety of handheld devices

With operations in the performance of equipment, applications and product diversity have made tremendous progress, the market also will be rapid growth laptop battery.

The security of small mobile devices for data processing equipment has a direct impact on performance. Build depend on the security of its processing power and thus the operation of the equipment batteries made more demands. When the safety performance of poor design or only as a 'remedial measures' as the remedial measures, it may be a polling mechanism, or allow the CPU to be kept running without the best of security software which led to the inspiron battery energy-consuming. If security can not correctly implemented in mobile devices, then it will ultimately be spent battery power, or even allow the use of end-users have a negative experience.

According to industry estimates, when the best of active non-action devices activated, small mobile devices, the Latitude C600 battery can be used for an average period from approximately 16 to 36 hours shortened to about three hours, the situation is very difficult to accept the user.

In equipment manufactured before effective action to ensure that safety equipment must be the first step in the initial stages of design and coding. Take 'in a variety of ways to ensure application security' attitude sometimes is not reliable, because the action on the application equipment will continue to decline Latitude C640 battery. On the contrary, when directed against any wireless transmission through the network of mobile devices to establish permanent security software, engineers need to assess security features, or is currently available and may reduce power consumption needs of the hardware support.

Tokyo Polytechnic University professor Wakihara pointed out that the majority of notebooks and mobile phones used by the bottom of lithium-ion laptop battery technology there are potential risks.

Domestic brands of opportunity

As a crisis of confidence and promote public awareness of the brand cell phone batteries rise will be the Chinese mobile phone battery brand in the best opportunity for a breakthrough.

Original batteries often the price of several hundred yuan, many mobile phone users can only look at Xingtan, and the price of domestic sony battery brand between Original counterfeit batteries and battery middle, at the same time, quality can also be better assured. Therefore, it can be predicted that in the safety awareness of users rising trend, the domestic brand batteries will be subject to market of all ages.
And domestic battery to grasp this opportunity, first of all to do is to rectify the market, and inferior to those batteries out of the market.

To rectify the market, we must first establish their own brands. After all, is facing hundreds of millions of mobile phone batteries to the retail public, while only a mobile phone subsidiary accessories. If there are no large-scale publicity and establish stronger brand awareness, it difficult to influence public spending choices. At present, China has been in a number of stronger PCGA-BP2EAmanufacturers, such as the Scud, BYD, Desai, Lenovo, TCL, etc., but they in public in brand awareness is not enough enjoys popular support.

In addition, the current proliferation of fake and shoddy battery market environment, how to build a good channel for consumers to buy genuine authentic, would be the key to open the situation. In this regard, the Scud batteries come to the forefront of the industry, we understand that in 2007, Scud Group will develop 300 stores, shops all over channels throughout the country. The laying of a wide range of brand stores, mobile phone users to buy genuine batteries, to provide a reliable channel at the same time, to establish a PCGA-BP2NX brand also play a very big role. Brand awareness in the public's rising trend, if the Chinese mobile phone battery brand stores can blossom everywhere in the country, then fake and shoddy batteries will also gradually lose survive.

With advances in technology and demand for the expansion of electronic tags for more and more people are familiar with. Volume is based on the application of different Yuezuo Yue small, laptop battery by the application of the election also will be smaller. Therefore, electronic tags in use now more and more button batteries, button batteries often chosen for the 3 V lithium manganese button batteries. In the current domestic production of such button battery manufacturers are also innumerable. I do not know much about the electronic label, which together with you to share the knowledge label batteries.

Lithium manganese button batteries are manganese dioxide for the cathode, the lithium-piece negative, plus the electrolyte to achieve the effect of discharge.

At present the various manufacturers, because the difference between production technology, and the optional sony battery of different materials, different prices, generally speaking, domestic battery cells to less than many Japanese, but now the gap getting smaller and smaller, local done a good Japan's batteries and battery performance has been very close.

Why do the Japanese domestic battery and battery and domestic battery performance will be among the big gap? » First, production technology, quality control is a very key reason for the second, the raw materials for batteries also considerable.

Technology is the core of each company secrets, but also the company's foothold in this, this, we can not be known, but the problem of raw materials, we can be analyzed, can be judged. Button cell core raw materials, that is, will affect PCGA-BP2EA performance of materials (which it is excluded, the negative electrode material is not adequate under the circumstances, many manufacturers from the profit point of view, the battery anode materials are jerry-building, resulting in battery power shortage, And it is abhorrent to this we are not within the scope of the note) have sealed the main apron, manganese powder, divide and battery shell.

Aprons sealed, it will directly affect the battery leakage, and the storage battery performance, almost sealed the easy Aprons aging, but an aging, leakage and leakage problems will arise then, the personal view, the domestic Aprons imports of seal and there is still a big gap between the apron of. This point in time we need to pay attention to buy, not to listen to Luanshuo battery manufacturers can save more than the number of juveniles.

Manganese powder on the purity of the battery performance is great, impure manganese powder will lead to discharge uneven, inadequate capacity, and other phenomena, which requires the manufacturer to see whether the PCGA-BP2NX of such specialized detection of the sector.

Divide the smooth discharge of the very important raw materials, divide the density is too dilute, the discharge will be too fast. Too dense, may not take power.

Shell is the battery cell conductivity is a good guarantee. On the market today commonly used battery shells at the stainless steel and stainless steel iron, of which the battery is also different materials are quite different.

Smart Battery System (SBS) the emergence of an independent greatly simplifies the design of the laptop battery system, its application has exceeded the notebook computer field, out now in various other applications, such as backup power systems, high-reliability military and aerospace applications. Other key applications include the automotive, security / surveillance / security systems, medical equipment, blade server, telecommunications and portable electronic products.

Smart battery using in-house electronic circuits to measure, computing and data storage batteries, which allows the use of power more predictable. Moreover, the smart ibook battery is also available in an important advantage, and that is to prevent accidents system downtime.

Smart Battery System

SBS a basic system with the following components: System Management Bus (SMBus), smart battery chargers and smart battery.

SBS modular design of the batteries closed-loop system changed very easily, such a system allows for an independent iBook G3 battery charger (smart charger), to maximize the hardware and software to reduce the non-recurring engineering (NRE) of the cost, And lead to a solid system, which is highly reliable battery backup applications is especially important. And integrated into the battery pack in the high accuracy of the barometer has been able to accurately monitor the battery, even when the battery is not in the same system. The barometer in accordance with the actual battery capacity value of the calibration, thereby removing the bias, to ensure the accuracy.

Smart battery charging and protection

Smart battery charger main function is to provide smart iBook G4 battery charging voltage and current sources. Through the SMBus interface smart battery chargers and intelligent communications, and choice of communication with the host. In order to prevent loss of function over the SMBus charge, surveillance continued operation of the timer to monitor the smart battery charger and the frequency of calls. If the battery is the time for action more than three minutes, then suspended pending the charger on the battery charge request again. In addition, batteries can also forced shutdown function to control the charger, which would bypass the SMBus, to provide redundancy and let levels know that the battery charger is indeed exist.

Discharge in the state, the laptop battery monomers Group of the battery-voltage inspection to identify the fastest-voltage drop one, identified as lagging behind its batteries, re-use check-discharge machines, check the batteries Discharge, detection of its capacity, that is, on behalf of the Group of the battery capacity.

At present, with online quick test method can quickly determine the battery pack in some or backward or deterioration of individual cells, but not enough accurate determination of the quality of the degree powerbook battery, including battery capacity, and other indicators, only as a qualitative test for reference . According to manufacturers before a customer's needs characteristics, a series of online test battery capacity of equipment and apparatus, that is, online or on-line monitor polling, whose publicity focused on the capacity not only rapid test is accurate and reliable, but also on-line. The technology research ideas should be promoted, but technical studies, as well as around the base station in the field tests show that, apart from a few cases, generally can not a very satisfactory results. There are many reasons for which the battery manufacturing process of reasons, the batteries have electrochemical properties of reasons, the actual use of batteries and maintenance reasons, there is a practical test conditions, such as the reasons.

The advantage of this approach is simple, small risk factor and can quickly find behind the battery. But the biggest drawback or low test accuracy, as the batteries can only be determined based on the state of backwardness, can not be accurately measured the performance of the iBook G3 battery level indicator and battery capacity. At the same time test higher, to achieve a certain accuracy of the test, the room should meet the general discharge factors, including a series of conditions, and the actual situation in the engine room is mixed, up less than the corresponding test requirements, test cases Is not very satisfactory, particularly the accuracy of the low capacity test.


Conductivity measurement is to increase the battery at both ends of a known frequency and amplitude of the AC voltage signal, measured voltage and with the current phase of the exchange value of its components and AC current exchange ratio is the battery voltage of the conductivity. Conductivity is a function of frequency, the frequency of different tests have different conductivity values, at low frequency, batteries and iBook G4 battery capacity conductivity very good correlation, the general frequency of measurements in about 30 Hz, according to the battery capacity of its General Council for measuring frequency Adjusted accordingly. Battery capacity is, the greater the resistance battery, the smaller the value of conductivity.

Conductivity can accurately identify the battery completely ineffective, according to a large number of experiments and research results show that the battery capacity reduced to only 50 percent, the internal resistance, or there will be considerable changes in conductivity, reduced to 40 percent after, there will be significant Change, therefore, in accordance with the battery or the conductivity of resistance, to a certain extent, determine battery performance, but the extent of the battery is good or bad, can not provide accurate data basis. Therefore, a conductivity test the resistance of the ibook battery or battery conductance is good or bad judgement of a valuable reference for ideas, but not enough to accurately calculate the actual battery performance, in particular capacity indicators.

Although the conductivity measurement technique is relatively simple tests, but because of internal resistance and capacity linear relationship between the bad, so test results can not be a good reflection of the true health condition of the battery.

China's annual about 300 million mobile phones, notebook computers and other IT products require laptop battery scrapped because of the lack of appropriate legislation and recovery system, consumers generally will be used batteries discarded as ordinary garbage, which is not correct recovery Battery become a shocking environmental pollution.

Information, a waste of batteries containing cadmium pollution can be 60 tons of water, batteries also contain large quantities of gold, mercury, lead, heavy metal components, will be on the natural environment caused tremendous pollution. If the pollutants through food, air and other means of getting into the human body, the body reaches a certain volume of savings, will enable people deformity or disease or even death Inspiron 700m battery.

The large number of batteries containing hazardous substances may also trigger genetic mutation, thereby affecting the next generation of healthy growth. In addition, the random discarded batteries may be refurbished into unscrupulous traders of counterfeit and inferior batteries into the market, the renovation of the use of batteries in the great hidden dangers, it is easy to cause short circuit, overheating and spontaneous combustion of explosives and other dangerous and endanger their personal safety Inspiron 5100 battery.

According to Jiang Jing Xin is estimated that China's current recovery rate of used batteries or even less than 1 percent. My reason is that there is no form to the production, sale, use one of three IT products used battery recycling mechanism, there is no uniform regulations for restraint.

Even on March 1, 2007 will go into effect the "electronic information products pollution control and management methods", no details on the norms in the enterprises should shoulder the recycling of discarded electronic products obligations.

Due to the lack of regulatory constraints, from the interests of manufacturers, are unwilling to pay to do the things Inspiron 8200 battery recycling. And a user with a piece of scrap batteries, has not recovered consciousness, or do not know how the recovery, and can only refuse to throw away.

      Oil prices, rising tariffs and other traditional energy crisis triggered, the pressure for virtually all parties concerned to look to the new alternative energy development. Under the new situation, Taizhou cable Optoelectronics Technology Co., Ltd., will be eyes on the solar panel production areas laptop battery. Less than 10 million U.S. dollars from the past output value of the festive lights, solar lighting of the production, to the present value of the dollar cable Guoyi, Optoelectronics Technology Co., Ltd., a short period of many years of efforts, Zeng Xian Pan, who successfully entered a new and high technology content of the solar panels Production industries, enterprises achieved a magnificent turn around.

       "Directed at the development of solar energy potential huge market, the company's Presario 2500 battery will continue to enhance productivity." WU Dong-development consultants told us that these companies in the development, and continuously upgrade the industry are inseparable.

      In 2005, the company also bridge Peng Jiezhen 2,000 square meters of factory buildings, some simple processing, enterprise technology content is not high, unable to keep up with a huge market demand, and efficiency is not high. In order to enhance the added value of their Presario 1200 battery, enterprises began to seek to strengthen the core technology and take the road of large-scale production. 2007, in the huge market potential, such as by Pan cents to further expand the scale of production, road and bridge in the city to purchase 30,000 square meters of standard factory buildings, two from Germany and the introduction of advanced polysilicon solar cell production lines. 

      Now, the company realized the automation of production processes, from self-cleaning and to the proliferation of plasma enhanced chemical vapor deposition, metal to metal printing of automatic and fully automatic analysis of sintering, the entire process of achieving a high degree of automation, and set up a High-tech product development and design teams, engaged in technology research and development and product quality control. 

    "For the current solar market, our production capacity needs to be further improved, particularly the upgrading industrial chain." WU Dong-ching said, to further improve productivity, 2008, the company also began to transform domestic equipment, highly efficient solar cells to achieve the industrialization of the road . After transformation, solar photovoltaic conversion with a high efficiency, long life, stable and reliable Presario 700 battery, and other characteristics of products reached 16 percent higher than the average photoelectric conversion efficiency. It is learnt that the current one with an annual output of 25 MW solar cell industry of the transformation project in the works are brewing. 

     In addition, because solar panels only a photovoltaic power generation industry chain of mid-stream products, its main raw material polysilicon now have to rely on imports, and because raw material prices and supply situation, prices are also rising. In recent years, the company began working with a group Huangyan establishment of a strategic cooperative relations, set up an Energy Corp., will be purified after the silica fume processed into polysilicon rods, thereby lengthening the current Presario 900 battery of the industrial chain to ensure the raw materials of polysilicon Demand.

For notebook computers, lithium batteries can be said to be a more important components, it directly related to the performance of laptop computers in the absence of power in an environment of the ability to work. And lithium batteries in notebook computers and the public can be considered a component of the letter of consumables, related to notebook computer lithium battery maintenance and reasonable use of the forum is also frequently discussed the issue. On the notebook computer lithium batteries in the shelving of the time saved is more than the number of stay, and whether the use of AC will remove the problem of lithium batteries, are not always what unified answer. I pay attention to many foreign experts in the experience, they will sum up the general view, for your consideration. Read the paper, you will find that many of them and generally we received the recommendations of the existence of some differences in the number.

     Lithium batteries in a life-cycle can be within the normal 300 to 500, filling the release. So many people think that as long as using less battery so that you can to a certain extent, played a role in extended battery life. But they overlook the battery is the physical nature of the original, when the end of the laptop battery assembly from the production line, its internal life began walking on the clock. So even if you do not have to be shelved lithium batteries, lithium battery life was only in two to three years on the dead. Lithium battery capacity and lead to the reasons for the decline was due to oxidation caused by lithium batteries internal resistance increase. When the cell resistance to a point, although this time lithium batteries can still fully charged, but lithium batteries but has not released the electricity saved.

     Caused by lithium batteries that the rate of aging is shelved by the temperature and save the state and charging decision. These two factors to explain the different situations on the impact of lithium battery capacity.

     High status and charging excessively high temperatures accelerated the decline in the capacity of lithium batteries. Therefore, if possible, as far as possible lithium battery charge to 40% placed in a cool place preservation. This will in the long time period to preserve its own lithium toshiba laptop batteries protection circuit in a working state. If fully charged lithium batteries will be placed under high temperature, which will lithium battery causing great damage, charging 100 percent in 60 ° C environment preservation, three months after the lithium battery capacity fell by 40 percent. Therefore, how to solve the preservation of lithium batteries this issue, but also brings everyone has been another focus of the debate, that is, when we use the power of the fixed time, the need for lithium batteries removed » In resolving this issue before Let us first analysis of the use of fixed lithium battery power when placed in a computer in their environment…… notebook computer at this time because the charging protection circuit, allowing lithium batteries remain at or above 100% of the state electricity, In which lithium batteries at a time when the ambient temperature at least between 25-30 ° C, if the hot weather, the temperature will be higher, then you should be very natural to come to a conclusion that to do so Lithium PCGA-BP2T will actually cause damage, thus leading to the decline of its capacity.

       Rechargeable laptop battery can be said is that micro-batteries. The basic principles of car batteries are the same, that is, from some kind of metal materials constitute a positive and negative electrodes, which joined in a chemical storage medium. Rechargeable batteries in the factory is in line for activation, salt, and discharge. Rechargeable batteries and a one-time ordinary alkaline batteries different. With the general battery discharge, linear voltage drop, but can not be restored. And although the use of rechargeable compaq laptop battery (loading), also with the voltage of electricity to reduce the trend, but to stop using (disconnect the load), regardless of how much surplus electricity, the voltage will be restored to 1.2 V or slightly lower than that. Charging, due to higher charge voltage battery voltage, charge, charging the battery voltage of 1.4 V around the general, but shelved while, rechargeable batteries, will return to the 1.2 V.

       Any batteries, including batteries and rechargeable batteries, can not be excessive discharge. Otherwise light to reduce battery life, weight will as early as within a short-circuit the battery, so that the battery is fully damaged. Its representation of the battery voltage is lower than 1 V, with only a few 0.1 V, a charge immediately Man-soon, but not immediately, then load.

      It needs to be clarified, but also very important. If rechargeable batteries do not have long-term and should be, Fangdiao, not-full. Full of rechargeable batteries, such as long-term do not have to, because the chemical battery, will shorten the life of the battery, or even damage rechargeable batteries. This is not the same with the battery. New rechargeable batteries in the factory have been fully discharge. Rechargeable Latitude D800 battery do not have no electricity voltage. Rechargeable battery with or without electricity, voltage is 1.2 V. Through the following methods to verify: the new rechargeable batteries (not-entirely) into DC, we will find that can not shoot, not a few.

     Now on the market to sell the auto-electronics, many of discontent-rechargeable batteries. Charger with a variety of brochures are given the capacity rechargeable battery charging time, but often no time to a nominal charge to the end. Non-rechargeable batteries for electricity for DC, the results seem very charges, DC. Friends complained that often see color, the same machine, the power-saving others, their own special fees Xinhua. May be not-for rechargeable batteries. May wish from this point onÕÒÕÒreasons. Some auto charger with rechargeable turbulence function. In such a charger, rechargeable batteries in power-Man can continue to use the turbulence in-one hour. This rechargeable Latitude CPi battery can Chong Man.

      In addition, the new rechargeable batteries after 3 - 5 times the full-discharge, to achieve the best. The use of rechargeable batteries should cultivate good habits, not completely compulsory, (DC automatic shutdown), and then to recharge. No matter is not automatic chargers, power-End immediately after the rechargeable batteries will be removed

      Sub-notebook batteries are many different types of laptop battery will not of course the nature of the same. The widespread use of notebook computer lithium-ion battery (or similar products); shortly before the personal computer, A4-based notebook computers in the temporary use of the premise of using a nickel-metal hydride batteries, while the mid-1990s, using a nickel Cadmium batteries. Users bought a notebook, first of all see the operation manual, the battery is used to confirm what kind of. If there is no statement by the Home Show battery manufacturers specifications. Nickel-hydrogen batteries and nickel-cadmium batteries of the biggest problems is the "memory effect", if not spent on rechargeable batteries (half-way charging), the next time you use batteries, used beginning on the charge of that place has no electricity. If the constant cycle of this process, battery life will be increasingly short. 

      Although nickel-hydrogen battery memory effect than nickel-cadmium batteries to be small, but the half-way charging is also repeated the reasons for the shortened life expectancy, so try all exhausted after the ibook battery to recharge.

       Lithium-ion batteries no memory effect, so even if the charge is off half-way there will not be too much problem.

      Extended battery life to use 

      Although lithium-ion batteries no memory effect, but the use of inappropriate methods will greatly affect life expectancy. The use of lithium-ion battery should note the following:

       Full power of the state not to use AC power drive 

       Not full, compared with the full power of the state of aging more easily. Especially when fully charged the use of AC power-driven, the battery will have a great burden. At the same time also increase the cooling capacity, and further accelerate the aging batteries. Therefore, the temporary use of notebook computers, once full of electricity, to the best use of ThinkPad T30 battery power. Manufacturers recommendations in the use of AC power, remove the battery (But if remove the battery, we must pay attention to a power outage or unplug the cable, such as accidents, the loss will not save the data).

        Use power-saving feature

       Factors affecting the battery life is the number of charge and discharge. In order to minimize the number of charge, we can use laptop computers with the power-saving features (in the use of battery-powered, dark-screen brightness, lower CPU speeds to reduce power consumption). The same token, there are battery power, it is best try not to charge the batteries fully utilized.

       A few months at full discharge

       There is also a trick or a few months each put a battery fully discharged. Specific approach is to have been used batteries, electricity, to zero after the cessation of the use of electricity, connect AC adapter, and then not to use personal computers, cooked up absolute power to full. Some personal computers with "battery discharge (Battery Refresh) function." If the battery is not that useful, you can try using the battery discharge functions.

        When not in a long time, unplug AC Adapter

        More than eight hours when not in the above, in order not to burden on the battery, pull out the AC adapter. Also if not more than a month when you remove the batteries from the machine, placed in the shade.

      When the replacement battery »

       Replacement is the standard rechargeable ThinkPad X60 battery can only be reached after the original capacity of around 60 percent. Because there are many types of batteries, it is necessary to buy personal computers in use on a model that. In addition, it is better not to buy ahead of backup, because even if not, the battery will be the natural wear and tear.

      There is now no need to buy authentic batteries, but is currently being used to discharge the battery to restore its performance of services. "BAYSUN" is one of them, a week of time can be resumed battery performance. 

      This compared with the purchase of authentic, not only are cheap, the manufacturers did not inventory, or second-hand laptop computers with PCGA-BP2EA no longer be able to use the occasion is particularly convenient, and so on.

      Q: Why Even if the laptop battery charge complete, also will soon show that consumption is less than

      A: For most notebook users, experienced the biggest problem may be related to the battery. With the use of increasingly long time, even if the battery is fully charged, they can use the time to think less and less. This is because many people are not in charge before the first battery is depleted, and the toshiba laptop batteries in the discharge or incomplete, the metal electrode material will gradually produce crystals, after hampered by the chemical reactions, leading to Electric capacity reduction, which is the formation of memory effect.

      In view of this situation, in fact, as long as each time before charging to fully discharge the steps, we can effectively slow down the formation of memory effect. If the problem is still unresolved, you can use the following tools on the battery Battery Doubler simple repair: memory effect to solve the battery problems, we can use Recalibrate battery function, to adjust the Presario 700 battery, can be used in addition to restore electricity, but also to solve the battery Capacity of the wrong; this process can also increase the use of battery time and speed up the use of the charging rate, the principle is slowing down the hard drive and processor fan speed of the operation, to achieve power-saving role.