What are the uses of lithium battery caps?

1. With overcharge protection function, power lithium ion batteries using different cathode materials and electrolytes have different characteristics of temperature and voltage change curves when overcharged. Because the lithium battery cap has an overcharge protection function, when the overcharge reaches a certain level , Charging will be forced to terminate. At this time, if the internal temperature of the power lithium-ion battery has reached a thermal runaway state, the internal pressure continues to rise, the explosion-proof membrane of the power lithium battery cap will be broken, and the contents of the power lithium-ion battery will be ejected with high-pressure gas. 2. It can protect the power lithium ion battery when the battery is short-circuited. There is a PTC protection element inside the lithium battery cap. Its working principle is that when a certain temperature is reached, its internal structure changes, and the resistance is greatly increased to prevent the battery. Discharge, with the function of protecting the battery when the power lithium battery is short-circuited externally. 3. Lower internal resistance The power lithium battery cap adopts relevant laser welding, ultrasonic welding and other technologies, as well as relevant experience in material selection, and can achieve an internal resistance of 0.5 milliohms or less. 4. It can ensure the safety performance of the power lithium-ion battery. Each specification of the power lithium-ion battery cap is made of its own parts by laser spot welding assembly or hot pressing edge, and it is made of aluminum material to make the explosion-proof system stable. It is further improved. When the internal pressure of the power lithium-ion battery reaches the specified blasting specification range, a large amount of material in the power lithium-ion battery is quickly discharged through the pressure relief hole of the top cover to ensure the safety performance of the power lithium-ion 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. Previous: What are the differences between lithium iron phosphate batteries and ternary batteries?