Lithium battery protection device schema in Figure 1 is mainly controlled by the battery protection IC, and external, M1 and M2 discharge switch load switch to achieve. When the P + / P-side connection charger, charging the battery normally, M1, M2 are in a state of conduction when the charge control IC detects abnormalities, it will terminate the charge off M2. When the P + / P-side connection load, the normal battery discharge, M1, M2 are conduction; When the control IC to detect abnormal discharge, it will terminate the M1 output levels off.

Several existing lithium-protection program

2 is based on the above battery lithium to protect the principle of a common council of the lithium battery protection. Included in the SOT23-6L package, the control IC, SOP8 package is a two switch M1, M2. While control of the manufacturing process of ICs and switching manufacturing processes differ, Figure 2, two chips are manufactured in a different process, usually the two chips are chips from different vendors. Inspiron 1520 battery Inspiron 1521 battery

In recent years, the industry, there will be a set of little chips together to improve integration, reduce the size of the trend in the final program. Market lithium protection is no exception. Figure 3 The two types of lithium battery protection scheme A & B appears in Figure 2 in the two chips in one chip, but in fact its packaging in the controller and the chip switch IC is still separated from different suppliers, the program is simply combined the two letters together, commonly called “core-2-one.”

Due to internal two chips from different vendors is still very real, the form is not enough, leading to the final packaging, various forms and in many cases can not adopt a common set. The relatively large size of the package, but we can not save external components, thus “two cores in a single program, in fact, not much room for the provinces. In terms of cost, although the cost of two packets in a series of measures to reduce costs, but because of this package is usually relatively large, and some is not a common package, and some in order to reduce the size of the package should form stacking boxes and therefore the traditional two programs smart relative to its cost advantage is not obvious. Vostro 1500 battery Vostro 1700 battery

4 is a real bullet and switch the controller chip on the same wafer of single-chip solution. Diagram of a traditional program in the switch is an N-type tube, then in Figure 1, B and P in-between, commonly called “negative protection. Figure 4 in the program because of technical reasons, the switch can be replaced by P-type tube connected between B + and P +, commonly called cathodic protection. Use this chip after the completion of this program to protect the tips in the detection of the user must be replaced when the shield of the test material and ideas. This program, while a certain amount of packaging to reduce costs, but the cost of chips has been reduced, with the vast amount of competition both in the traditional program has no real cost advantage. Unlike traditional programs have become incompatible with the concept of positive protection enormous obstacles in their commercialization process. TD347 C1295

The “more than two nuclei in a” program, one program of the anode chip protection while in the program area and the cost to the user brings some advantages, but the benefit is not yet clear . These programs have also made a number of drawbacks, and the program’s traditional customers competitive and mature in the process ultimately can only reduce the space margin to price competition. Because the cost true origin of these programs, and there is no obvious advantage, therefore, with the traditional program, and passing control IC chip price cuts, these “core-2-one” option or the protection program positively and had not been able to shake the traditional program of market dominance status. hp Pavilion DV1000 battery  hp Pavilion dv4000 battery

The charging and discharging of the battery:

Rechargeable lithium-ion battery when the first line of fast charge constant current voltage reaches a certain value, then slow charge mode, constant voltage. Notebooks are often not strictly a constant current load monitoring devices. The system load when a strong current burden on small, while large, power adapter AC power line decision. Clearly, the system will charge the battery and other components, such as UPC, hard drives, LCD and other competing energy sources. I tried to run Superπ side while loading the track and found that the load current in the 0 .70 ~ 1.70A between changes, can not respond to lithium-ion battery needs recharging, then I am afraid that this work, rechargeable batteries were defective. IBM statement calling for laptops does not work when the load is probably the reason. IBM ThinkPad R51 battery  IBM ThinkPad R52 battery

Load at boot time, if we choose the charge mode, you do not choose the mode of fast charge (Express charge mode) to avoid premature battery “full”. There is a time of low battery to prohibit the use of best performance of the CRF in order to reduce the power of competition. If the laptop is using CUP support SpeedStep technology, it is preferable to install the driver (the seller will be responsible installed) to facilitate the adjustment exercise. SpeedStep program icon is a blue flag, right click on the performance tuning options can occur. Under Windows XP, the program will SpeedStep problems, this time to invoke or change the BIOS settings of the legislation of a number of brand-specific programs, such as IBM laptop software is very powerful tool.

Electrical discharge of lithium, or still serving, let the natural loss of quality. Better not to use physical methods (channel resistance in the class). Not to say that this was not feasible, but a relatively important if the system of internal protection does not work, then set aside cells, and the worst is probably the battery explosion, courses this unlikely. Circuit dangerous hidden is not impossible, a number of big name manufacturers have found that the design of potential risk factors exist in a recall battery like mobile phone battery when you do not hear the explosion . Dell Inspiron 1300 battery  Dell Inspiron 1420 battery

Tip: In general, laptops battery circuit protection in the block is usually voltage, chip control, assurance, and temperature sensors. Operative temperature protection is usually only once, the inside has a fuse (about 130 ℃ Fuse), is used to monitor the work of the voltage regulator block. If the charge-discharge process exceptions, immediately, there will be a current through the protective device temperature will melt fuse, the internal circuitry of the battery in this moment to state open circuit, and can not be restored. If you want to repair only the replacement of the protection against overheating, but such a device temperature protection on the market difficult to find.

The discharge is the discharge current as small as possible, the operation is to slow down and let CUP difficult to stop the transfer, the transfer screen darker (or close the switch), then do not install programs until ‘that the laptop automatically closed. The emphasis on the discharge current is small to prevent the early detection of the shortage of laptop battery. hp Pavilion DV1000 battery  hp Pavilion dv4000 battery

Lithium-ion batteries from Sony in 1992 by the beginning of commercialization, the world’s lithium-ion battery industry which dominates the fundamental from the Japanese by the year 2000, Japan accounted for battery production for more than 95% of the world. In recent years, with China such as BYD, TCL payment to the representative of the battery for the enterprises and the rapid emergence of Korea and Japan show a unique pattern has basically been broken, the Japanese lithium-ion battery market share has fallen to the present less than 60 percent of the world’s lithium-ion battery industry in Japan and South Korea two-thirds of the world’s pattern has been formed.

Although still in the lithium-ion battery manufacturer to occupy the top spot in the market, but Japanese companies have been obvious from China (liquid lithium represented in BYD, Li-polymer power to TCL can be represented by gold) and South Korea feel the impact of competitors to the pressure and headaches. Lithium-ion hp batteries in Japan’s global market share continues to decline after 2000. Japan in 2000 accounted for 93.9 percent of the global market share has declined in 2002 to 69.4 percent, authorities said, according to the industry, with China and South Korea Li-ion battery industry’s rapid growth in 2005 expected to be Japan’s global market share will be below 50%.

Japanese lithium-ion battery business is the high cost of the competitiveness of Japanese companies and the main reason for decline in market share. However, the core technology in Japan than in China and South Korea still has a distinct advantage.

South Korea in the field of secondary batteries based on far less than China and Japan, but South Korea’s advantage in recent years in its consumption of IT and mobile terminals, such as strong growth in product areas. It is reported that global sales of Samsung Taiwan’s 55 million mobile phones. In mobile phones, flat-panel displays in areas such as Samsung, LG and other Korean brands have the limelight over the Japanese enterprises. The lithium-ion rechargeable battery has become the cell phones, notebooks and other mobile consumer electronics the standard power supply, with local enterprises procurement advantages, South Korea’s lithium-ion battery industry is enough to let the Chinese and Japanese counterparts envy.

However, in the lithium-ion battery manufacturing equipment, raw materials and other components, the current 80% dependence on imports in Korea, which would weaken the South Korea in the industry’s long-term competitiveness. At present, the South Korean government is vigorously promoting its own lithium-ion hp pavilion dv1000 battery, hp pavilion dv4000 battery, hp pavilion ze2000 battery to form a complete industrial chain and competitiveness.

Compared to South Korea and Japan, the Chinese enterprises with their own cutting-edge technology with the breakthrough in the continuous expansion of production scale, cost advantages of China has gradually become the core competitiveness of enterprises.

As we all know, some domestic enterprises, but also lead to strong growth from Sanyo and Sony’s patent infringement lawsuit proceedings. Japan and South Korea compared with the previous enterprises, Chinese enterprises are significantly less than the development of core technologies in order to not be controlled by others and being accused of infringement, is still technically innovative Chinese enterprises need to continue efforts. It is worth noting that China’s largest manufacturer of polymer lithium batteries, is second only to SONY, Samsung, the world’s third largest polymer battery manufacturers – TCL payment to the company, there will be no walk domestic enterprises by foreign enterprises to buy patents instead focus on technology, R & D inputs, and achieved a number of research results, with a number of independent core patented technology and intellectual property, breaking the Japan-South Korea business-to-polymer battery technology monopoly. Its production of lithium polymer batteries is close to the overall performance level of similar products in Japan, the battery electrochemical impedance, energy density, high-low-temperature discharge, etc. even ahead of the competition. TCL gold in the continuous cutting-edge technical breakthroughs, no doubt the Chinese enterprises to enhance competitiveness in the long run.

Japan and South Korea face business challenges dinosaur-class, China’s lithium-ion battery has been through the expansion of the scale to change the cool strategy. A few days ago, reporters from the TCL Group is part of the professional R & D, production of polymer lithium-ion battery Battery Co., Ltd. TCL King can understand that as the company’s Industrial Park, Huizhou TCL official energy production operators, TCL gold battery capacity to achieve upgrading by leaps and bounds. Up to now have an annual output of 10,000 over 6000’s production capacity polymer lithium battery, has become the world’s third largest manufacturer of polymer lithium batteries. The company said high-level, TCL payment to the company will continue to maintain the momentum of improvement by leaps and bounds, in 2006 the scale of annual production capacity of 200 million, becoming the world’s largest manufacturer of polymer lithium battery; another in liquid lithium batteries, the current Zambia Di lithium-ion battery for the 16 million per month, with its new plant put into operation Shanghai and Shenzhen factory capacity expansion, the company Nissan is expected to lithium-ion battery from its current level of 500,000 to one million, which was close to Japan Sanyo.

Pricing strategies will never be able to hit the market the most sensitive nerve! China has cheap and abundant labor resources, you can use the human-oriented semi-automatic production line, in order to adopt low-cost competitive strategy. In addition, along with the internal lithium-scale expansion of production, but also pulling the market price of the global lithium an important factor in rapid decline. In the current mobile communications become increasingly cost-competitive products of the white-hot situation, with the excellent performance of China’s price advantage of lithium-ion battery products, has become the global mobile communications giant MOTOROLA, NOKIA, Samsung Electronics, such as the first choice for enterprises. From the nation’s largest manufacturer of liquid lithium BYD, becoming the first Chinese MOTOROLA supplier of lithium, the Tianjin power of God has also passed the certification audit MOTOROLA. A few days ago, as the nation’s largest manufacturer of polymer lithiumhp presario m2000 battery, hp presario v2000 battery, compaq presario v5000 battery TCL gold can also be adopted by MOTOROLA, Samsung Electronics and other international audit firms certified, China Li-ion battery manufacturers in the world will become more prominent status.

“Teachers must have three lines,”

The world’s lithium-ion battery industry in recent years after the game, the basic two-thirds of China, Japan and Korea formed the pattern of the world. From the future development of the world’s lithium-ion industry trend analysis, the three countries in the lithium-ion battery market, competition can be said to be different, the pattern of one-third of the world will remain a considerable period of time.

Japanese lithium-ion production cost of enterprises in the non-dominant, but it has grasped the core technology in the industry, through a long period of development has established a certain degree of technical barriers to entry; Korean companies in the lithium-ion battery manufacturing equipment, raw materials and other components , the 80% dependence on imports, which would weaken the South Korea in the long-term competitiveness of industry, but by virtue of its leading-edge areas of IT, through its own self-marketing advantages, lithium-ion batteries in Korea on the industry sufficient to China and Japan peer envy; obviously a disadvantage of Chinese enterprises is the lack of core technology development, but along with the internal battery, such as TCL gold to keep the cutting-edge breakthroughs in technology, it is bound to gradually strengthen the enterprises to participate in international competitiveness, at the same time production costs, Japan and South Korea’s advantage is elusive in the short term.

As the old saying goes: “there must be three of us are walking teacher”, who is Li-ion compaq presario v4000 battery industry in the future real overlord, as Chinese enterprises, only get others to make up our own may have a chance to become a short Li-ion battery industry.