Battery structure

By setting recessed parts on both sides of the blade battery electrode assembly to fit the weld seam, the problems of friction between the casing weld seam and the electrode assembly and unreasonable gaps are solved, thus achieving stable assembly and high yield of the electrode assembly.

CN121149342APending Publication Date: 2025-12-16SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511265580.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-05
Publication Date
2025-12-16

AI Technical Summary

Technical Problem

The weld seams of the blade battery casing are prone to rubbing against the electrode assembly, and an unreasonable gap between the electrode assembly and the casing can lead to assembly damage and movement, affecting the stability of the electrode assembly and assembly efficiency.

Method used

Elastic elements are installed on both sides of the electrode assembly. The side of the elastic element facing away from the electrode assembly forms a recessed part, which cooperates with the weld to isolate contact. The elastic elements located on both sides of the electrode assembly fill the gap and provide buffering to ensure the stability of the electrode assembly within the housing.

Benefits of technology

It effectively isolates the contact between the weld and the electrode assembly, reduces assembly damage, prevents electrode assembly movement and damage, improves assembly yield, and enhances the stability and buffering effect of the electrode assembly within the housing.

✦ Generated by Eureka AI based on patent content.
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Abstract

The present invention relates to the technical field of batteries, and discloses a battery structure, which comprises: a shell in which a cavity is formed; the welding seam is arranged on the surface of one side of the shell and extends in the length direction; the welding seam protrudes towards the cavity from the inner wall of the shell; the pole group is arranged in the cavity; the at least two elastic pieces are respectively arranged on two opposite sides of the pole group along the height direction; a sunken part is formed in one surface, deviating from the pole group, of the elastic piece; the welding seam extends into the sunken part; according to the battery structure provided by the invention, the elastic piece is arranged, the concave part is formed in the surface, deviating from the pole group, of the elastic piece, and the concave part is matched with the welding seam, so that the welding seam is effectively isolated from the pole group, assembly damage is reduced, and pole group assembly is prevented from being influenced by the welding seam; the number of the elastic pieces is at least two, and the elastic pieces are arranged on the two opposite sides of the pole group in the height direction, so that the defect that the pole group moves, is damaged and the like due to the unreasonable gap between the pole group and the shell is overcome, and the product yield of the assembled pole group is improved.
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