Sealing device for explosion-proof valve of airtightness test of lithium battery box

Abstract

The invention discloses a sealing device for an explosion-proof valve of an airtightness test of a lithium battery box. The sealing device comprises a box body plate, an explosion-proof valve fixed at the upper part of the box body plate and a sealing unit arranged above the explosion-proof valve. The sealing unit includes a support base, a fixed plate fixed at the upper part of the support base and a pressing plate moving up and down at one side of the fixed plate. The sealing device is mounted or dismounted rapidly and conveniently. With the pressing plate, a compression unit, and a moving unit, rapid sealing of the explosion-proof valve is realized and the sealing effect is good; the pressure withstanding capability and the test efficiency during testing are improved; and the testing precision is guaranteed. With an elastic component, dismounting becomes convenient, so that the labor intensity is reduced, the operation becomes convenient, and the time and force are saved. Moreover, the structure is simple and the manufacturing cost is low; the sealing device can be used repeatedly by multiple times, so that the usage cost is lowered. The sealing device can be widely applied.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to an explosion-proof valve sealing device for testing the air tightness of a lithium battery box. Background technique [0002] Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Lithium battery module refers to the combination of lithium batteries connected in series and parallel, and after protecting the circuit board and casing, it can directly supply power. [0003] During the production process of the lithium battery box, it is necessary to test the air tightness of the lithium battery box to judge the waterproof and dustproof ability of the lithium battery box. During the inspection, it is necessary to inflate the inside of the box and test the internal pressure of the box, and then To achieve the purpose of testing the air tightness of the box, but an explosi...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, it is generally sealed by wrapping adhesive tape and sealant for human use, which is time-consuming and laborious, which increases the labor intensity of workers, increases labor costs, and lowers the test efficiency.

At the same time, if this method is used for sealing, the sealing effect is poor, and it cannot bear the high pressure during the test, which seriously affects the test effect

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