Lithium battery packaging shell and lithium battery

By designing a projection and groove structure that interferes with each other on the plastic upper case and the lower case of the lithium battery case, and connecting it through ultrasonic welding, the problem of insufficient strength and waterproof performance of the lithium battery case is solved, and the effect of high strength and high waterproof performance is achieved, meeting the protection requirements of the IP67 standard.

CN222690826UActive Publication Date: 2025-03-28SHENZHEN HENGYU TECH CO LTD
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Patent Information

Application Number
CN202421170757.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-27
Publication Date
2025-03-28
Estimated Expiration
2034-05-27

AI Technical Summary

Technical Problem

Existing lithium battery case is difficult to meet the requirements of high strength and high waterproof performance, especially in terms of drop testing and waterproof performance.

Method used

An upper case and a lower case made of plastic are adopted, and a projection and groove structure that interferes with each other is formed on the upper side wall of the upper case and the lower side wall of the lower case, and is connected by ultrasonic welding to form a sealed and fastened connection.

Benefits of technology

It realizes the high strength and high waterproof performance of the lithium battery packaging shell, can meet the drop testing needs, and meet the protection and safety level of IP67 standard.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides a lithium battery packaging shell and a lithium battery. The lithium battery packaging shell comprises an upper plastic shell and a lower plastic shell, the upper plastic shell comprises a top wall and an upper side wall, a first matching part is formed on the bottom surface of the upper side wall, and the first matching part surrounds the whole bottom surface of the upper side wall. The plastic lower shell comprises a bottom wall and a lower side wall, a second matching part is formed on the top surface of the lower side wall, and the second matching part surrounds the whole top surface of the lower side wall. And one of the first matching part and the second matching part is a bulge, and the other is a groove. And the first matching part and the second matching part are in interference fit, and the interference fit parts of the first matching part and the second matching part are connected through ultrasonic welding, so that the plastic upper shell and the plastic lower shell are in sealed and fastened connection. The lithium battery comprises the lithium battery packaging shell and a lithium battery body. The lithium battery shell can meet the requirements of the lithium battery on high strength and high waterproof performance of the shell.
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