What are the indicators of lithium-ion battery safety test

1. Squeeze detection: Place the fully charged battery on a flat surface, apply a pressure of 13±1KN by the hydraulic cylinder, and squeeze the battery from the flat surface of a steel rod with a diameter of 32mm. Once the pressure reaches the maximum, stop Squeeze, the battery does not catch fire, just don't explode. 2. Impact detection: After the battery is fully charged, place it on a flat surface, place a steel column with a diameter of 15.8mm vertically in the center of the battery, and drop a 9.1kg weight freely from a height of 610mm onto the steel column above the battery. The battery does not catch fire or explode. 3. Overcharge detection: Fully charge the battery with 1C, and conduct an overcharge test according to 3C overcharge 10V. When the battery is overcharged, the voltage rises to a certain voltage and stabilizes for a period of time. The battery voltage rises rapidly when it is close to a press time. When it reaches a certain limit, the top cap of the battery is pulled off, the voltage drops to 0V, and the battery does not catch fire or explode. 4. Short circuit detection: After the battery is fully charged, the positive and negative electrodes of the battery are short-circuited with a wire with a resistance of not more than 50m to detect the change in the surface temperature of the battery. The maximum temperature of the battery surface is 140°C. The battery cap is opened, and the battery does not fire or explode . 5. Needle puncture detection: Place the fully charged battery on a flat surface and pierce the battery in the radial direction with a steel needle with a diameter of 3mm. It is enough to detect that the battery does not fire or explode. 6. Temperature cycle test: The temperature cycle test of lithium ion battery is used to simulate the safety of lithium ion battery when it is repeatedly exposed to low temperature and high temperature during transportation or storage. The test is to use rapid and extreme temperature Changes are made. After the test, the sample should not fire, explode, or leak. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.