EXPLOSION-PROOF VALVE FOR BATTERY CELL, BATTERY CELL, AND BATTERY MODULE

• Main Author: LI, Zhidao
• Format: Patent
• Language: Chinese; English; French
• Published: 21.07.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Disclosed are an explosion-proof valve for a battery cell, the battery cell, and a battery module. The explosion-proof valve comprises: a base configured to be ring-shaped and adapted to be fixed on a cover plate of the battery cell; and a valve plate fixedly connected to an inner peripheral edge of the base and protruding towards the outside, wherein the thickness of the base is greater than that of the valve plate. The explosion-proof valve according to the present application comprises the valve plate and the base, wherein the thickness of the valve plate is less than that of the base, the valve plate has a first section line extending in a lengthwise direction, and the valve plate has an arc-shaped section at the first section line and in the thickness direction, the arc-shaped section having a radius R1, which satisfies 50 mm ≤ R1 ≤ 200 mm. The valve plate can be ruptured in a more timely manner after the pressure of the battery cell reaches a preset value, thereby achieving a fast response speed and a g