Lithium battery using common seven problems cause analysis and solution

　　With the high-speed development of science and technology level, the using range and function of lithium-ion batteries are self-evident, but in our daily life accident lithium-ion batteries always emerge in endlessly, always haunt us, in view of this, small make up special finishing the reason of the lithium ion common problem analysis and solving measures, hope to provide convenience for you.

　　A, voltage, the individual is low

　　1. Self-discharge caused by low voltage

　　Big batteries self-discharge, make its voltage is lower than other fast, low voltage can be eliminated by storage after check voltage.

　　2. Low voltage charged inequalities caused

　　Battery testing when charged, because the contact resistance or inconsistent test tank charged current batteries charged. Stored in a short time (12 hours) to measure the voltage difference is small, but when long stored voltage difference is bigger, the low voltage and no quality problem, can be solved by charging. In production for over 24 hours after charged voltage measurement.

　　Second, the internal resistance is larger

　　1. Test equipment

　　If precision is not enough or not eliminate electrical contact group, will cause display internal resistance is big, should be used in ac bridge method principle, testing internal resistance testing instrument.

　　2. The storage time is too long

　　Lithium-ion batteries for too long, thereby causing loss to the capacity is too big, passivation, internal resistance, can be solved by filling put activation.

　　3. Abnormal heat resistance caused by large

　　Batteries in processing (spot welding, ultrasonic, etc.) make a battery abnormal heat, closes the diaphragm produce hot phenomenon, serious internal resistance increases.

　　Third, lithium battery

　　1. When the lithium battery

　　Lithium-ion batteries in charging, lithium batteries will naturally produce inflation, but generally not more than 0.1 mm, but the charge will cause the electrolyte decomposition, internal pressure increases, lithium battery.

　　2. When processing expansion

　　Generally is the abnormal processing, such as short circuit and overheating, etc.) caused by excessive internal heat decomposition of the electrolyte, lithium battery.

　　3. The expansion cycle

　　Cells in circulation, the thickness as the cycle number increases, basic is not increased, but after more than 50 weeks times the normal amount in 0.3 ~ 0.6 mm, aluminum shell is relatively serious, cause this kind of phenomenon belongs to normal cell reaction. But if increasing the thickness of the shell or reduce internal materials may be appropriately reduced inflation.