What are the reasons for the explosion of lithium batteries and lead-acid batteries?

Reasons for lithium battery explosion 1. Piercing: Compared with short circuit and overcharging, piercing a lithium battery is also a very unwise approach. If the lithium battery is pierced by any hard object, the lithium ions inside it will directly chemically react with the oxygen in the air, and the phenomenon of violent combustion will also occur. 2. Prevent high temperature and fire: high temperature or fire will also cause the explosion and burning of lithium batteries. Especially in the hot summer or in a car exposed to the sun for a long time, the ambient temperature of the lithium battery will be higher than its normal storage temperature. 3. Long-term overcharge of the battery: In the long-term charging state, overcharge and overcurrent will also cause high temperature and high pressure, which may cause hidden dangers. Lithium batteries may instantaneously discharge under special conditions of temperature, humidity, and poor contact, resulting in a large amount of current, spontaneous combustion or explosion. 4. Charging causes the battery to explode: playing with the phone while charging, and charging while playing will cause the charging time to become longer. Charging for a long time will cause the temperature of the phone to rise, making it easier to explode. Reasons for the explosion of lead-acid batteries 1. Poor battery quality: poor quality of separators or defects, allowing active material on the plates to pass through, causing virtual or direct contact between the positive and negative plates; 2. Overcharging: Lead-acid batteries are overcharging At the time, the water in the battery electrolyte will be electrolyzed, and hydrogen and oxygen will appear after being electrolyzed. These are flammable and explosive gases. When the hydrogen content in the battery or in the air accumulates to the explosive limit, an open flame will be encountered outside. , It is very likely to burn or explode. 3. Blocked vent holes: Due to the blockage of the vent holes of traditional lead-acid batteries, the battery will burst first, which will cause the battery to vibrate, and sparks will appear when the pole wiring is not strong, which will cause an explosion. 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: What should I pay attention to when installing a lithium battery UPS power supply?