At present, portable batteries have been widely used in electronic products such as communications and storage. Most of the portable batteries are mainly lithium batteries or nickel batteries. There are rechargeable and non-rechargeable batteries. No matter what kind of battery, It cannot be ignored that its related safety accidents have almost never stopped, so it is very important to carry out safety inspections on batteries.
1，Nickel batteries
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Continuous low-rate charging (cells)
Vibration
Case stress at high ambient temperature (batteries)
Temperature cycling
Incorrect installation (cells)
External short circuit
Free fall
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Mechanical shock
Thermal abuse
Crushing of cells
Low pressure
Over charge
Forced discharge |
2，lithium batteries
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insulation resistance Continuous charging at constant voltage (cells) Case stress at high ambient temperature (batteries) External short circuit Free fall Thermal abuse |
Crush Over-charging Forced dischargeVibration Mechanical shock Design evaluation – Forced internal short-circuit (cells) |
According to previous testing experience, overcharging, 150°C thermal shock, needle sticking, extrusion, high temperature short circuit, heavy object impact, etc. are often test failures (Fail).
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