What are the common failures of lithium batteries?

Common faults and problems of lithium batteries ●Low voltage caused by uneven charging: When the battery is charged after testing, the battery cells are charged unevenly due to inconsistent contact resistance or inconsistent charging current of the detection cabinet. The measured voltage difference is very small in short-term storage, but the voltage difference is large in long-term storage. This low voltage has no quality problems and can be solved by charging. Stored for more than 24 hours to measure the voltage after being charged during processing. ● Abnormal temperature: If the temperature of the lithium battery is abnormal during charging or discharging, for example, the temperature is too high. The reason for this situation may be a slight short circuit inside the lithium battery. ●Battery pack cycle life is short: the battery pack ends within the promised use time. This situation is due to the poor consistency of the battery pack or the poor performance of individual battery packs connected in series, which makes the battery pack not fully charged during charging and when discharging Can't finish it again. ●The battery pack suddenly stops working when the battery pack is in use: It may be that the lithium battery is discharged, and the protection board or controller stops working when the protection board or controller's minimum voltage is reached; or the continuous working current is too large to exceed the design protection current of the protection board Or the continuous current of the controller causes the protection board or the controller to stop working, which will cause the battery pack to suddenly stop working. ●Batteries are swelling and bulging, air leakage and liquid have irritating odor, the screws turn black, the batteries are softened, precipitation hardened, overheated, and the tabs fall off. Overcharge and over-discharge. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How to extend the service life of the battery?