Pole, battery cell cover plate and battery cell

By setting a limiting boss and a column part on the connection hole of the pole column to form a clamping part, the existing pole column poor welding and easy disconnection at the joint are solved, and the reliable connection of the pole column is achieved, meeting the requirements of the battery cell, and improving the safety performance and service life of the battery cell.

CN119674468APending Publication Date: 2025-03-21SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510180618.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

The pole pillars with existing split structures are prone to defective welding and easily disconnected at the joints, resulting in the push and pulling force that the pole pillars can withstand cannot meet the requirements of the battery cell, and are prone to failure due to the pole falling off.

Method used

An electrode column is designed, which includes a connecting part and a cylinder part, and a limiting boss is provided on the connecting hole, and the cylinder part is formed with a protruding clamping part. The clamping positioning of the connecting part and the cylinder part is achieved through the cooperation of the limiting boss and the clamping part, ensuring that the connection and the cylinder part are connected reliably.

Benefits of technology

Through the coordination of the limiting boss and the clamping part, a reliable connection between the connecting part and the cylinder is achieved, avoiding the situation where the cylinder part falls off from the connecting part, reducing the risk of the pole column falling off on the battery cover, meeting the battery cell usage requirements, and improving the safety performance and service life of the battery cell.

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Abstract

The invention relates to the technical field of batteries, in particular to a pole, a battery cell cover plate and a battery cell. According to the pole, a connecting hole is formed in a connecting part, and a limiting boss protruding inwards is formed on the inner wall of the connecting hole; the column body part is assembled in the connecting hole, part of the column body part extends out of the connecting hole, a clamping part protruding outwards is formed on the side wall of the column body part, and the clamping part abuts against the limiting boss, so that the connecting part is arranged at one end of the column body part in the axial direction, and the two ends of the column body part in the axial direction are located on the two sides of the limiting boss in the axial direction of the pole respectively. The terminal post is of a split structure comprising the connecting part and the post body part, before the connecting part and the post body part are welded, clamping positioning of the connecting part and the post body part is achieved through cooperation of the limiting boss and the clamping part, reliable connection of the connecting part and the post body part is guaranteed, the condition that the post body part falls off from the connecting part is avoided, and the reliability of the terminal post is improved. Therefore, the risk that the pole on the battery cell cover plate falls off is reduced, and the use requirement of the battery cell is met.
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