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A detection method for the corrosion resistance of lithium-ion battery uv glue to electrolyte

A lithium-ion battery and detection method technology, applied in the direction of weather resistance/light resistance/corrosion resistance, using stable tension/pressure testing material strength, measuring devices, etc., to achieve the effect of improving accuracy

Active Publication Date: 2022-03-04
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production, the traditional detection method of UV glue resistance to electrolyte corrosion cannot truly reflect whether UV glue is resistant to electrolyte corrosion. Therefore, it is very important to develop a test method that can effectively detect UV glue resistance to electrolyte corrosion. significance

Method used

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  • A detection method for the corrosion resistance of lithium-ion battery uv glue to electrolyte
  • A detection method for the corrosion resistance of lithium-ion battery uv glue to electrolyte
  • A detection method for the corrosion resistance of lithium-ion battery uv glue to electrolyte

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Embodiment 1

[0026] A method for detecting the corrosion resistance of lithium-ion battery UV glue to electrolyte, comprising the following steps:

[0027] S1. Weld the empty aluminum shell with the cover plate provided with the liquid injection port and the explosion-proof valve to obtain the shell, and pass nitrogen gas into the inside of the shell for air-tightness testing to ensure that the air-tightness of the shell is qualified;

[0028] S2. Place the airtight qualified housing in a liquid injection room with a dew point ≤ -40°C, inject 10 mg of electrolyte solution containing lithium hexafluorophosphate through the liquid injection port, and clean the residual electrolyte in the liquid injection port with alcohol;

[0029] S3, using UV glue to seal the liquid injection port by dispensing;

[0030] S4. Use a mercury lamp to cure the UV glue at the liquid injection port for 20 seconds, and then let it stand at room temperature for 12 hours;

[0031] S5. Invert the case treated in ste...

Embodiment 2

[0035] A method for detecting the corrosion resistance of lithium-ion battery UV glue to electrolyte, comprising the following steps:

[0036] S1. Weld the empty aluminum shell with the cover plate provided with the liquid injection port and the explosion-proof valve to obtain the shell, and pass nitrogen gas into the inside of the shell for air-tightness testing to ensure that the air-tightness of the shell is qualified;

[0037] S2. Place the airtight qualified housing in a liquid injection room with a dew point ≤ -40°C, inject 10 mg of electrolyte solution containing lithium hexafluorophosphate through the liquid injection port, and clean the residual electrolyte in the liquid injection port with alcohol;

[0038] S3, using UV glue to seal the liquid injection port by dispensing;

[0039] S4. Use LED lamps to cure the UV glue at the liquid injection port for 10 seconds, and then let it stand at room temperature for 12 hours;

[0040] S5. Invert the case treated in step S4 ...

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Abstract

The invention discloses a detection method for electrolyte corrosion resistance of UV glue of a lithium ion battery, comprising the following steps: S1, welding an empty aluminum shell with a cover plate provided with a liquid injection port and an explosion-proof valve to obtain a shell; S2 1. Inject the electrolyte into the housing through the liquid injection port; S3, use UV glue to seal the liquid injection port; S4, use UV lamps to cure the UV glue at the liquid injection port; S5, step S4. The casing after processing is left in a high-temperature environment; S6. Perform a pressure test on the casing after processing in step S5 until the explosion-proof valve explodes, and judge whether its electrolyte corrosion resistance is qualified according to whether the UV glue falls off. The detection method of the invention can eliminate the error caused by incomplete curing of the UV glue, can truly simulate the battery leakage environment, improves the accuracy of the measurement results, and provides a basis for the selection of the electrolyte corrosion-resistant UV glue.

Description

technical field [0001] The invention relates to the technical field of detection of lithium-ion batteries, in particular to a detection method for the corrosion resistance of UV glue of lithium-ion batteries to electrolyte. Background technique [0002] In recent years, with the improvement of people's awareness of energy conservation and environmental protection, research on battery technology has become a hot topic. In order to achieve energy sustainability, lithium-ion batteries have attracted widespread attention. There are many factors involved in the design of the electrical performance and safety performance of lithium ions, which have attracted widespread attention, and there are many related reports. It is well known that the leakage of lithium-ion batteries will not only cause the self-discharge of the battery to increase and the attenuation of capacity, but also cause the battery to short-circuit and catch fire in severe cases. However, there is no effective mea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00G01N3/12
CPCG01N17/00G01N3/12G01N2203/0019G01N2203/0044
Inventor 赵雅静
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY