Why are lithium battery cars so prone to spontaneous combustion?

1) Mechanical and electrical problems, such as bumps, punctures, flooding, ignition, etc. Bumps can cause damage to the internal structure of the lithium battery or damage to the outer shell. In severe cases, the electrodes of the lithium battery will be exposed to the air; punctures will damage the diaphragm and cause an internal short circuit; if water enters the battery after immersion, it will have a violent chemical reaction with lithium . (2) Electrochemistry and product quality problems, such as overcharge and overdischarge, overheating, and internal short circuit. Overcharging and over-discharging can easily cause swelling, swelling of the electrode, puncture of the diaphragm, etc.; overheating may be caused by thermal management failure, a large amount of heat released by the battery in a short time causes thermal runaway; internal short circuit is caused by damage to the internal structure. There were 79 new energy car safety incidents in 3 months. How can we effectively solve the problem of spontaneous combustion of lithium cars? (3) The problems of manufacturers and customers. For example, in order to cut costs, lower production safety requirements, cut corners and cut corners, or inadequate protection methods, or seek subsidies to shorten the time for battery product testing and verification, the short skill verification cycle has led to lack of skill verification and immature engineering solutions. However, if customers modify it privately, improper use and maintenance, it will also increase the risk of battery fire. The statement showed that among the vehicles for which the cause of the fire has been identified, 58% of the vehicle fires were caused by battery problems, 19% of the vehicle fires were caused by collision problems, and some of the vehicles’ fires were caused by water flooding, component defects, and use. The cause of the problem. 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: The industry's research on low-temperature-resistant lithium batteries