EV battery

Fire safety test of lithium battery

by：Vglory 2021-03-24

The chargers and batteries used in the experiment are sold as power sources, such as car models. First, let the lithium polymer battery continue to be fully charged until it reaches an overcharged state and catches fire. Then, according to the difference in battery capacity and charging current value, observe the time to fire and the magnitude of the fire. Because overcharging is man-made, use an ordinary battery charger to charge it. It is safe to note that the current does not exceed the battery capacity when charging, but this experiment determined that in the case of fast charging, charging will cause the battery to break. (1) Experimental conditions and results. Charge a fully charged lithium polymer battery (2200mAh) with a current of 6A. This is 2.7 times faster than the average charge. After 31 minutes of charging, the synthetic resin box broke, white smoke appeared in 36 minutes, and a fire occurred in 37 minutes. The maximum flame length measured by video is 100cm (see Figure C). (2) Charge a fully charged polymer lithium battery (2200mAh) with a current of 10A. This is about 4.5 times faster than normal charging. The experimental results are shown in Table 1. (3) Fully charge the polymer lithium battery (4200mAh) with a current of 10A. This is about 2.4 times faster than normal charging. Its capacity is approximately 1.9 times that of a 2200mAh lithium polymer battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.

Custom message