A lithium-ion battery aluminum shell cell structure

By designing the combination of visual pressure pipes and "T" -shaped ears in lithium ion batteries, the combination of pressure balls and constant pressure valves is used to automatically disconnect the circuit when the lithium branch is formed. The problem of overheating and explosion caused by the formation of branches has the advantages of facilitating problems and alerts in a timely manner.

CN118572206BActive Publication Date: 2025-01-24HEYUAN JUXINYUAN TECH CO LTD
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Patent Information

Application Number
CN202410792506.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-01-24
Estimated Expiration
2044-06-19

AI Technical Summary

Technical Problem

During the use of lithium-ion batteries, the internal pressure is too high due to the formation of lithium branches, which may cause the leakage, overheating and explosion of the electrolyte.

Method used

A lithium -ion battery aluminum shell cell structure is designed, which uses a combination of visual pressure pipes and inverted "T" -shaped ears to use the coordination of pressure balls and constant pressure valves to automatically disconnect the circuit when the lithium branch formation. Avoid the battery's overheating and explosion.

Benefits of technology

Through the design of the automatic disconnection circuit, the overheating and explosion problems caused by the formation of lithium dendrites in lithium-ion batteries are avoided, which has the advantage of facilitating timely detection of problems and alerting.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a lithium-ion battery aluminum shell core structure, comprising a positive plate, a negative plate, an electrolyte, a diaphragm, an aluminum-plastic film, an aluminum shell and a visible air pressure tube, wherein the diaphragm is arranged between the positive plate and the negative plate, the aluminum-plastic film is arranged between the electrolyte and the negative plate, the visible air pressure tube, a positive pole ear and a negative pole ear are arranged on the top of the aluminum shell, the visible air pressure tube is hollow inside and a pressure ball is slidably installed inside; a constant pressure valve is fixedly arranged on the top of the visible air pressure tube; the positive pole ear is moved upward to disconnect from the positive plate to put the battery in an open circuit state, and the pressure ball is raised to the top for reminder, thereby solving the problem that the traditional lithium-ion battery aluminum shell core structure will cause excessive internal pressure when lithium dendrites are generated, or the electrolyte leaks to cause battery overheating and explosion, and has the advantages of being easy to find problems and warn in time.
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Citation Information

Patent Citations

  • Soft-package lithium ion battery with safety valve

    CN105789518A

  • Soft package lithium ion battery with exhaust valve and pre-charging method thereof

    CN113161600A