In order to avoid excessive battery discharge or overcharge cell lithium-ion battery offers triple protection agency due to improper use. First, using a switching element, when the increase in temperature in the battery, its resistance rise, when the temperature is too high, it will automatically stop the power supply; second is to choose an appropriate separator material, when the temperature rises to a certain value micron microporous separator will automatically be dissolved away, so that the lithium ions can not stop the reaction, the internal battery; third set safety valve (that is, the top of the battery discharge pores), the internal pressure of the battery rises to a certain value, the safety The valve opens automatically to ensure safety in use of the Dell Inspiron 15R N5010 battery.
Sometimes, the battery safety control measures, but for some reason causing control failure, the lack of a safety valve or safety valve to release gas too late by the battery voltage will be a sharp rise caused by the explosion.
Under normal circumstances, the total energy stored in lithium-ion Dell Studio 1737 battery, and its security is inversely proportional to the volume also increased with increasing battery capacity, battery, and its thermal performance deterioration, will significantly increase the likelihood of an accident. With lithium-ion batteries for mobile phones, the basic requirement is less than one millionth the probability of security incidents, which is acceptable to the public the minimum standards. For large-capacity lithium-ion battery, especially in the automotive and other large-capacity lithium-ion battery, forced cooling is particularly important.
Choosing a safer electrode material, lithium manganese oxide material, in the molecular structure to ensure in the fully charged state, the lithium ions of the positive electrode has been completely embedded in the negative electrode carbon hole, from the fundamental to avoid the generation of dendrite. While the lithium manganate a solid structure, and oxidation performance is far lower than the lithium cobalt oxide, the decomposition temperature exceeds a lithium cobaltate 100 ° C, even if the internal short circuit occurs (acupuncture) due to an external force, the external short circuit, overcharge, but also fully capable of to avoid the risk of burning and explosion due to the precipitation of metal lithium initiator.
In addition, the use of lithium manganese oxide materials can also significantly reduce costs.
Improve the performance of existing security control technology, first of all to improve the safety performance of the lithium-ion Dell Inspiron 6400 battery cells, which is especially important for large-capacity battery. Select good performance thermal shutdown diaphragm, the diaphragm is in the isolated battery positive and negative at the same time allows lithium ions through. Diaphragm before melting when the temperature rises, in the closed, so that the internal resistance to rise to 2000 ohms, so that the internal reaction is stopped.
When the internal pressure or temperature reaches a preset standard, explosion-proof valve will open and begin relief to prevent the excessive accumulation of gas inside the deformation occurs, eventually leading to the shell burst.
Enhance the control sensitivity, the more sensitive the control parameters and the joint control of the plurality of parameters (this is particularly important for large-capacity battery). For large-capacity lithium-ion Dell Latitude D630 battery pack serial / parallel multiple batteries, such as laptop voltage above 10V capacity, typically 3 to 4 single cells in series to meet the voltage requirements, then 2 ~ 3 of the battery pack in series parallel, in order to ensure a larger capacity.
Large-capacity battery pack must be set perfect protection function, should also consider two types of circuit board module: the protection circuit board (Protection Board PCB) module and Smart Battery Gauge Board module. The full set of battery protection design, including: a protection IC (to prevent battery overcharge, over discharge, short circuit), two protection IC (to prevent overvoltage 2nd), fuses, LED indicator, temperature regulation, and other components.
Multi-level protection mechanism, even in the case of abnormal power charger, laptop, notebook battery can only be converted to automatic protection status, if the situation is not serious, and often re-plug can work properly, do not explode.
Currently, the underlying technology used in laptops and cell phones use lithium-ion battery is unsafe, you need to consider a more secure structure.
In short With advances in materials technology and the people of the lithium-ion Dell Latitude D830 Battery design, manufacture, testing and use requirements of the aspects of a growing awareness, lithium-ion batteries in the future will become more secure.
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