Detection device and method for sealing performance between anti-explosion valve outer wire and cover plate of lithium ion battery

Abstract

The invention relates to a detection device and method for sealing performance between an anti-explosion valve outer wire and a cover plate of a lithium ion battery. The detection device comprises a detection component, a pneumatic reversing switch (17), an oil mist filter (18), a pressure regulating valve (19), an air supply (20), a detection medium (21) and a medium container (22); and the detection component is partially arranged in the medium container (22) filled with the detection medium (21). The detection method comprises the following steps: sleeving a part (14) to be detected on an upper sealing piece (13); driving the upper sealing piece (13) to move downwards by a piston rod (3) to press the part (14) to be detected on a lower sealing piece (15); regulating the pressure regulating valve (19) to inflate air in the air supply (20) to the part (14) to be detected; and observing whether bubbles merge from the detection medium so as to judge the sealing performance between the anti-explosion valve outer wire and the cover plate. The invention is applicable and convenient, and the yield of anti-explosion lithium ion batteries is greatly improved, therefore, the device and the method have practical values.

Description

technical field [0001] The invention relates to the field of explosion-proof lithium-ion batteries, in particular to a device and method for detecting the sealing performance of an outer wire and a cover plate of an explosion-proof valve of a lithium-ion battery. Background technique [0002] Today, as traditional energy sources such as oil, coal, and natural gas are decreasing with the increasing exploitation of people, lithium-ion batteries, as a clean, environmentally friendly, and efficient energy conversion and energy storage system, have become an effective method to solve today's environmental and energy problems. Lithium-ion batteries are widely used in products such as notebook computers, video cameras, digital cameras, mobile phones, and power tools. For safety considerations, today's lithium-ion batteries are mostly equipped with explosion-proof devices. [0003] When the explosion-proof lithium-ion battery is working, the sealing performance of its explosion-pro...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a lithium-ion battery explosion-proof valve outer wire and cover plate sealing performance testing equipment and method to solve the gap between the explosion-proof valve outer wire and the battery cover in the production process of lithium-ion batteries with explosion-proof valves. Sealing performance testing problems

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