18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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Lithium battery safety.Nickel Hydride No. 5 battery

release time:2023-03-28 Hits:     Popular:AG11 battery

  

  To improve the performance of existing safety control technology, we must first improve the safety performance of lithium -ion battery cores, which is especially important for large -capacity batteries. Selecting the diaphragm with good thermal closure performance, the role of the diaphragm is to allow the passing of the lithium ion to pass the positive and negative electrodes of the battery. When the temperature rises, turn off before the diaphragm melts, so thatInternal resistance rose to 2000 ohms, which stopped internal reactions.

  When the internal pressure or temperature meets the preset standard, the explosion -proof valve will be opened and the pressure is started to prevent the internal gas from excessive volume and deformation, which eventually causes the shell to burst.

  Increase control sensitivity, select more sensitive control parameters, and joint control using multiple parameters (this is especially important for large -capacity batteries). For large -capacity lithium -ion battery packs are composed of multiple batteries of string/parallel, such as the voltage of the laptop is more than 10V, the capacity is large. Generally, 3 to 4 single batteries can meet the voltage requirements, and then 2 will then 2 2. ~ 3 tandem battery packs are connected to ensure a large capacity.

  The large -capacity battery pack itself must set a relatively complete protection function. Two circuit substrate modules should also be considered: protecting the circuit substrate module and the Smart Battery Gauge Board module. The entire set of battery protection design includes: Level 1 protection IC (preventing battery from overloading, over -loading, short circuit), level 2 protection IC (prevention of the second overvoltage), fuse, LED indicator, temperature adjustment and other components.

  Under the multi -level protection mechanism, even when the power charger and laptop have abnormal, the laptop battery can only be converted to an automatic protection state. If the situation is not serious, it can work normally after re -insertion. Explosion will occur.


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