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

First, make sure your books are the type of media, and generally have the shell of the battery is marked, and people do not know that English does not matter if the hull of the battery is a few hundred words, if there are tags NI-MH (the word), then congratulations to you, because you remove some of the successes of the past, Ni-MH battery status of your strong support is powered by hydrogen, it must first engage in more batteries back from the electronic market to buy or buy from one network very touched. The battery is used to shape Jiugen trumpet at home almost the same as the battery is not packing, the unit voltage is 1.2V (if you do not even know 1.2V is the voltage value, then the following article you can not read) and the capacity is not the same as household batteries, like the trumpet, medium voltage is 1.5V, but using the same as the current output, and figures should be used for more than the trumpet. Conditions as the purchase price of high capacity although there are some differences. hp Pavilion dv6000 battery  hp Pavilion DV1000 battery

With the battery, then the next step is to give your battery an operation because the battery is a “patient” as “a doctor, you should be careful (and who does not have an accident) and that operation of the tool is necessary. Screwdrivers, pliers, saw blade, lighter copper wire of small tuning voltage 1V to 12V DC transformer (small appliance stores sold), fuses, electric iron, electrical tape, etc.. these things are available to buy hardware. Most of the shell casing of the battery from the top and bottom areas of bond formed by the environment, then we are also related to her he saw, (this process is most disturbing to build off the success of) slowly sawing, to give a straight line with respect to sawing after the process of bonding, but also your patience and your ability to test. saw time be careful not to cut the parts inside the battery bad, anyway, the mentality of a doctor, she wants to deal with the battery.

Saw the post that you find inside is a N (N is sometimes greater than 10) series-parallel battery and Fall, (so good!) Yes, indeed, the battery strings in parallel many, the series is up for Standard Voltage work in parallel to a certain battery capacity (eg, time of use of mobile), in fact there are problems in most cases is Not every section of the cell, but only one or more sections, which stresses the need for wisdom for the maintenance process is put the batteries a few problems have been found to purchase replacement generation normal cells, the problem is so simple. Dell Inspiron B130 battery  Dell Inspiron E1505 battery

Well, the battery begins to undergo an operation and removed the battery A 1 (that is, the link between the sawing of the battery, it is preferable to a sketch on paper to avoid loss memory), the battery can be divided into positive and negative electrodes of the shell and the battery and the smooth side is connected to the negative on the other side is the cathode, the function of the battery is to save the electricity, and discharge. Then, make sure the battery is good or bad is to test the storage, discharge capacity, we established a battery initial surgical instruments mentioned in the transformer transferred to 6V, then the positive cathode of the battery anode then the negative cable (it is a super-pressure load), each cell 5 minutes stopped five minutes due to two, one is for cooling the transformer, 2 is the battery “rest”. Approximately eight times this operation to complete the process of rechargeable batteries, compared to test for the discharge process is much easier and fun, take a local team to take the negative side of the fuse, then the positive (short of discharge circuit) If the fuse immediately fuse, this section is good, and the other hand, if no response is the problem then this section of the unit’s battery (Oh … victory before). All this has put the battery issue instead of the normal battery, connected the A1008 A1012 battery, then put it carefully into the shell, the link, then back into the good graces of trying, you’ll be very happy.