Copper-aluminum composite pole and battery cover plate

By extending the copper layer portion to the column structure in the copper-aluminum composite electrode column and ensuring that its extension length is greater than or equal to 0.2 mm, the problem of difficult to determine the ratio of the copper layer portion to the aluminum layer portion in the prior art is solved, the structural stability is improved and the risk of fracture is reduced.

CN119651077AActive Publication Date: 2025-03-18SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510180610.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-03-18
Estimated Expiration
2045-02-19

AI Technical Summary

Technical Problem

Among the existing copper-aluminum composite electrode columns, the ratio between the copper layer portion and the aluminum layer portion of the negative electrode column is difficult to determine, resulting in high manufacturing cost or poor connection stability, and easy to break under vibration and bumpy conditions.

Method used

A copper-aluminum composite electrode column is designed, and the copper layer portion extends from the plate structure to the cylinder structure, and ensures that the extension length of the copper layer portion on the cylinder structure is greater than or equal to 0.2mm, ensuring the stable bond between the copper layer portion and the aluminum layer portion.

Benefits of technology

Through the design of the extended copper layer, the structural stability of the copper-aluminum composite electrode column under vibration and bumping conditions is improved, the fracture problem is avoided, and the manufacturing cost is taken into account.

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Abstract

The invention relates to the technical field of batteries, in particular to a copper-aluminum composite pole and a battery cover plate, the copper-aluminum composite pole comprises a copper layer part and an aluminum layer part, the copper-aluminum composite pole comprises a pole body structure and a plate body structure, and the plate body structure is integrally connected with one end of the pole body structure in a first direction. Wherein the first part of the plate body structure and the first part of the column body structure are copper layer parts, the first part is the part, close to one end of the plate body structure, of the column body structure, and the second part of the column body structure is an aluminum layer part. The dimension of the first portion in the first direction is greater than or equal to 0.2 mm. According to the copper-aluminum composite pole and the battery cover plate provided by the invention, the combination of the copper layer part and the aluminum layer part of the copper-aluminum composite pole is stable, so that the structure of the copper-aluminum composite pole can be kept stable under the working conditions of vibration and bumping.
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