Lithium ion battery heavy current protective device and lithium ion battery

Abstract

The invention relates to a lithium ion battery heavy current protective device and a lithium ion battery. The lithium ion battery heavy current protective device comprises a battery cover plate made of an electro-conductive material, a positive press plate, a negative press plate, a positive pin, a negative pin, a positive upper insulation connection plate, a negative upper insulation pad, a positive side-lower insulation connection plate, a negative side-lower insulation connection plate, positive rivets, and negative rivets. The positive press plate, positive upper insulation connection plate, battery cover plate, positive side-lower insulation connection plate, and positive pin are riveted together through the positive rivets. The negative press plate, negative upper insulation pad, battery cover plate, negative side-lower insulation connection plate, and positive pin are riveted together through the negative rivets. The positive press plate and the negative press plate are welded to the positive rivets and negative rivets respectively. The provided protective device can break off the negative pole and positive pole of a lithium ion battery when the lithium ion battery is overcharged or the external circuit is shorted; and thus the safety of the lithium ion battery is improved.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to a lithium-ion battery high-current protection device and a lithium-ion battery. Background technique [0002] Today's China is a country with rapid economic development, and rapid economic development requires transportation as a guarantee. Under the current environment, motor vehicles increase rapidly every year, and the exhaust gas emitted has caused huge damage to the environment, and the amount of oil consumed is increasing rapidly every year. According to statistics, the existing proven oil can only be used for about 50 years, so human beings It is necessary to develop new energy sources, and lithium-ion batteries have the advantages of relatively high energy, good safety, abundant raw materials, and no pollution. It is more in line with the requirements of human beings, but there are the following problems in terms of power batteries: 1) The energ...

AI Technical Summary

Problems solved by technology

It is more in line with the requirements of human beings, but there are the following problems in terms of power batteries: 1) The energy of the power battery is relatively large, so the positive electrode material used has relatively large energy and poor safety. serious safety hazard

2) Since the battery is often used under high temperature and high humidity conditions, there will be corrosion of the shell

Images