Explosion-proof ventilation valve

Abstract

The invention provides an explosion-proof ventilation valve applied to the technical field of new energy battery box parts. A rear cover (2) is installed on one side of a valve body (1) of the explosion-proof ventilation valve. A screen plate (3) is installed on the other side of the valve body (1). A ventilation film (4) is arranged between the screen plate (3) and the valve body (1). A screen plate I (5) is provided with a plurality of air discharge grooves I (7). A screen plate II (6) is provided with a plurality of air discharge grooves II (8). The air discharge grooves I (7) are of a structure which is staggered with the air discharge grooves II (8). The explosion-proof ventilation valve is simple in structure, the problem that during transport or installation of the explosion-proof ventilation valve, the ventilation film is pierced by a thin and sharp object, thereby being damaged can be effectively avoided, performance is improved, meanwhile, after the rear cover of the explosion-proof ventilation valve is installed, opening cannot be conducted freely, the overall performance of the explosion-proof ventilation valve is ensured, and the effect that the bursting pressure of the ventilation film can be adjusted as needed is achieved at the same time.

Description

technical field [0001] The invention belongs to the technical field of new energy battery box components, and more specifically relates to an explosion-proof venting valve used for a new energy battery box. Background technique [0002] At present, in the new energy lithium battery, ternary battery and other industries, in order to meet the IP67 safety standard, the new energy battery box must be fully sealed, but the new energy battery needs to be exhausted during use. In this way, if the box is completely Closed, the pressure in the box will be too large after the battery works for a long time, and there is a danger of explosion. In order to solve the above problems, new energy battery manufacturers will choose explosion-proof vent valves that are both waterproof and breathable to install on the box. In this way, when the air pressure in the box is greater than a certain value set, the explosion-proof venting valve will discharge the overpressured gas out of the box, keep...

AI Technical Summary

Problems solved by technology

The explosion-proof venting valves in the prior art have the following deficiencies and defects: 1) Due to the individual differences of the explosion-proof venting valves, the blasting pressure that the venting membrane of each explosion-proof venting valve can withstand is not the same, and the pressure that can withstand is not adjustable; 2 ) There are many venting grooves (holes) on the explosion-proof valve mesh currently used in the market. During transportation or installation, some fine and pointed objects are easy to pass through the venting grooves and puncture the venting membrane, and the explosion-proof venting valve is damaged. This makes it possible for the explosion-proof venting valve to be installed without knowing that the venting membrane has been damaged, and there are hidden dangers in use; 3) the back cover of the existing explosion-proof venting valve can be easily opened, and the user can adjust the blasting pressure at will, which has potential safety hazards

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