Welding auxiliary device for square steel shell battery and welding method

By designing a welding auxiliary device for flangeless square steel-cased batteries, the welding of the four sides and four corners is achieved using drive components and guide structures. This solves the problems of complex operation and low efficiency in welding flangeless square thin steel-cased batteries, improves welding quality and efficiency, and ensures product consistency.

CN119457668BActive Publication Date: 2026-06-09EVE ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EVE ENERGY CO LTD
Filing Date
2024-12-30
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies lack welding auxiliary tooling for flangeless square thin steel-cased batteries, resulting in complex welding operations, low efficiency, poor product consistency, and the need to cut flanges, adding to the process.

Method used

Design an auxiliary device for welding a flangeless square steel-cased battery, including a bracket, a positioning mechanism, a clamping mechanism, and a limiting mechanism. Welding of the four sides and four corners is achieved through a drive component and a guide structure. A pre-pressing plate and a limiting mechanism are used to ensure the stability of the assembly and the consistency of the gap.

Benefits of technology

This technology enables the one-time welding of the four sides and four corners of the flangeless square steel-cased battery, improving welding quality and efficiency, ensuring high consistency and packaging yield of the welded product, and avoiding the step of cutting excess flanges.

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    Figure CN119457668B_ABST
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Abstract

The present application relates to the technical field of battery production equipment, and discloses a welding auxiliary device and a welding method for a square steel shell battery without a flange. The welding auxiliary device for the square steel shell battery without the flange comprises a support, a positioning mechanism and a pressing mechanism. The positioning mechanism is installed on the support and is used for placing the battery. The pressing mechanism comprises a pressing plate assembly, a connecting arm, a first driving assembly and a first guide structure. The first driving assembly is installed on the support, the output end of the first driving assembly is in transmission connection with the connecting arm, the connecting arm is in sliding connection with the pressing plate assembly through the first guide structure, the pressing plate assembly is located above the positioning mechanism, the connecting arm is provided with a first avoiding notch and a second avoiding notch on both sides in the Y direction, and the projection parts of the first avoiding notch and the second avoiding notch in the X direction are partially overlapped. The first driving assembly can drive the connecting arm to move to a position where one of the to-be-welded edges of the square steel shell battery without the flange is exposed to the first avoiding notch or the second avoiding notch. The present application can effectively improve the welding quality and the welding efficiency.
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