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Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
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release time:2024-08-20 Hits: Popular:AG11 battery
What are the reasons for short circuit of cr2032 button battery?
Short circuit of cr2032 button battery refers to the abnormal path of connecting the positive and negative poles of the battery with wires, which will cause serious damage to the battery and burn, and may cause fire, or the battery container will explode due to excessive pressure. Short circuit of cr2032 button battery causes the positive and negative poles of the battery to contact, and its cause is relatively complicated.
① Manufacturing process
The surface of the electrode has burrs, which pierces the diaphragm and causes short circuit of the positive and negative poles, or it is caused by improper process during manufacturing;
② Use process
Lithium ion battery overheats and the diaphragm melts to cause short circuit. Micro short circuit is mainly caused by burrs on the battery plate, which can be eliminated by high current discharge. Micro short circuit causes insufficient voltage. During the use of lithium metal batteries, due to the crystallization of metal lithium to form dendritic crystals, it is easy to cause micro short circuit, and serious short circuit. Low temperature is also easy to cause micro short circuit of lithium ion batteries.
③ Poor quality of diaphragm
The quality of lithium battery diaphragm is not up to standard, and lithium-ion battery packs are often charged and discharged with high current during use. The diaphragm cannot withstand the huge flow of lithium ions in a short period of time, resulting in local or large-scale damage, which directly causes the battery to heat up and damage.
④ Leakage
When the temperature of the cr2032 button battery rises slowly, the shell gradually melts, and the protective layer cannot protect it, resulting in the leakage of corrosive electrolyte. Then it will cause a short circuit in the battery.
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