Special-shaped profiled steel shell structure

By designing an irregularly shaped steel shell and top cover without flanges, and combining 3D printing and CNC machining, the problems of material waste and low efficiency in the processing of traditional lithium battery steel shells have been solved, achieving efficient and low-cost production.

CN122393498APending Publication Date: 2026-07-14SHENZHEN HUAGONG NEW ENERGY EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN HUAGONG NEW ENERGY EQUIP CO LTD
Filing Date
2026-03-25
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional lithium-ion batteries with steel casings suffer from material waste and low production efficiency during processing, especially when cutting the flange edge, which requires leaving a margin to avoid damaging the terminal post, resulting in raw material waste and complex process paths.

Method used

It adopts a flangeless steel shell and flangeless top cover structure, which is manufactured by a combination of 3D printing or stamping and CNC machining. It is designed to fit the shape of the battery cell and the flangeless top cover and steel shell are sealed and connected by protrusions and grooves.

Benefits of technology

It reduced material waste, improved production efficiency, simplified the process, enhanced the production efficiency and consistency of battery casings, and reduced costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122393498A_ABST
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Abstract

The present application relates to a kind of special-shaped flange steel shell structure, comprising: no edge flange steel shell, inside hollow and one end opening, form for accommodating the installation space of electric core;No edge flange top cover, the opening of the no edge flange steel shell is sealed, and its edge is flush with the opening of the no edge flange steel shell.The special-shaped flange steel shell structure of the present application, using no edge flange steel shell and no edge flange top cover with all flange edges, no edge flange steel shell has installation space matched with the shape of electric core, after electric core is placed into installation space, the opening of no edge flange steel shell is sealed by no edge flange top cover, no edge flange top cover and no edge flange steel shell are connected by child-mother buckle mode.Compared with the shell of traditional steel shell battery, the production method of first die cutting and then polishing can reduce the waste of material, and improve the shell production efficiency of steel shell battery.
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