Battery cover plate leak detection method

A battery cover, leak detection technology, applied in the direction of detecting the appearance of fluid at the leak point, using liquid/vacuum degree for liquid tightness measurement, etc., can solve the problem of neglecting detection evaluation and control, detection process lag, detection cost Advanced problems, to achieve the effect of simple test method, prevention of leakage hazards, and accurate test

Inactive Publication Date: 2017-06-20
GUOXUAN NEW ENERGY SUZHOU CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the steps and methods for testing the sealing in the battery industry are generally after the battery is assembled or at the finished product stage, through helium gas detection or positive and negative pressure detection, the detection cost is high and the detection process lags behind, ignoring the stage of IQC incoming materials The detection, evaluation and control of the electric vehicle often lead to the loss of a battery or all the batteries of the entire electric vehicle due to the leakage of a cover plate in the later stage, and there are also potential safety hazards.

Method used

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  • Battery cover plate leak detection method

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Embodiment

[0023] refer to figure 1 As shown, this embodiment is a battery cover leak detection device, including an upper pressing plate 1, and a lower pressing plate 2 corresponding to the upper pressing plate 1; Viton gaskets with high temperature resistance, corrosion resistance and excellent elasticity are used. The elastic washer 3 is provided with a hollow cavity 4 , and the component under test (not shown in the figure) of the battery cover is clamped in the hollow cavity 4 . An opening 11 corresponding to the hollow space 4 is vertically penetrated in the upper platen 1 , the upper platen 1 is detachably fixed to the lower platen 2 by screws, and the elastic gasket 3 is sealed in the upper platen 1 and the lower platen 2 . The lower platen 2 is provided with an air inlet 5, and the air inlet 5 is externally connected with an air pressure regulating valve 51, and the air pressure regulating valve 51 is connected with a nitrogen tank 52. The interior of the air inlet 5 communica...

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PUM

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Abstract

The invention discloses a battery cover plate leak detection method including the following steps that S1 a battery cover plate is clamped in an elastic washer; S2 an upper pressing plate and a lower pressing plate are locked and sealed, and a gas pipe is communicated with the lower pressing plate, a gas pressure adjusting valve, and a nitrogen tank; S3 the upper pressing plate and the lower pressing plate are immersed in the water vessel; S4 the nitrogen tank is opened, the gas pressure adjusting valve is opened, and the circulated gas pressure is adjusted to the range of 0.6-1MP; and S5 after 1-5 min, whether the opening of the upper pressing plate has bubbles blown out is observed. The method realizes the leak detection of the battery cover plate at the incoming material stage, avoids the risk of later leakage, and is quick and easy.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a method for detecting leakage of a battery cover plate. Background technique [0002] At present, the steps and methods for testing the sealing in the battery industry are generally after the battery is assembled or in the finished product stage, through helium gas detection or positive and negative pressure detection, the detection cost is high and the detection process lags behind, ignoring the stage of IQC incoming materials The detection, evaluation and control of the electric vehicle often lead to the loss of a battery or all the batteries of the entire electric vehicle due to the leakage of a cover plate in the later stage, and there are also potential safety hazards. Therefore, it is particularly important to introduce a battery cover leak detection method in IQC incoming materials. Contents of the invention [0003] The purpose of the present invention i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/06
CPCG01M3/06
Inventor 刘丽张大峰
Owner GUOXUAN NEW ENERGY SUZHOU CO LTD
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