EXPLOSION-PROOF VALVE, TOP COVER ASSEMBLY, AND BATTERY

• Main Authors: LIN, Jian, ZHANG, Yao, DAI, Hengwei, HU, Chunbo, ZHANG, Lipeng, YANG, Wei, LIN, Xiude
• Format: Patent
• Language: Chinese; English; French
• Published: 22.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present application relates to the technical field of power batteries, and particularly relates to an explosion-proof valve, a top cover assembly, and a battery. The explosion-proof valve comprises a mounting portion and a main body portion, the mounting portion is disposed on an outer peripheral edge of the main body portion, and the main body portion comprises a weak portion and a first cushioning portion; the weak portion is disposed between the mounting portion and the first cushioning portion, or the weak portion is disposed on the first cushioning portion; the weak portion is a position having the minimum burst pressure value on the explosion-proof valve, and the weak portion is configured to open the explosion-proof valve when the air pressure of the inner space of the top cover assembly reaches an opening threshold of the explosion-proof valve. When the explosion-proof valve provided by the present application is influenced by external factors which easily enable the weak portion to generate stres