Lithium battery with high-efficiency assembly

By setting an appropriate width of the pole ear through hole on the insulating gasket of the lithium battery and concentrating the pole ear at the end of the battery cell, the problem of the convexity when the pole ear passes through the insulating gasket is solved, and rapid assembly and cost savings of lithium batteries are achieved.

CN119650807APending Publication Date: 2025-03-18YINGDE BAY DISTRICT NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202411991533.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

When assembling a cylindrical lithium battery, the process of the electrode passing through the insulating gasket may cause the outer edges of the insulating gaskets at the upper and lower ends of the battery cell to appear, which will affect the assembly efficiency and cost.

Method used

By setting an appropriate width of the pole ear through holes on the upper and lower insulating gaskets, and after the battery cell is wound, the positive and negative ears are concentrated in the preset area of ​​the upper and lower ends of the battery cell, so as to ensure that there is enough space when the pole ear passes through and avoiding the convex phenomenon.

Benefits of technology

The height of the battery cell and insulating gasket is achieved to meet the preset value, avoiding the need for manual re-pression of the insulating gasket, improving the efficiency of lithium battery assembly and reducing costs.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides a lithium battery capable of being assembled efficiently, a tab positive gasket comprises a positive gasket body, a battery shell, an insulating gasket, a positive plate body, a negative plate body, an insulating interlayer and a sealing cover, and the insulating gasket comprises an upper insulating gasket and a lower insulating gasket. The positive plate body, the negative plate body and the insulating partition layer arranged between the positive plate body and the negative plate body are laminated and wound to form a cylindrical battery cell, the positive plate body is provided with positive tab connecting areas, the positive tab connecting areas are arranged at the two ends of the positive plate body, the negative plate body is provided with negative tab connecting areas, and the positive tab connecting areas are arranged at the two ends of the negative plate body. The negative tab connecting areas are arranged at two ends of the negative plate body; the upper insulating spacer is provided with a tab through hole, the width of the tab through hole is 4-9 times of the thickness of the positive tab wrapped with the insulating layer, the lower insulating spacer is provided with a tab through hole body, and the widths of a fourth tab through hole and a fifth tab through hole which are formed in the tab through hole body are 6-9 times of the thickness of the negative tab wrapped with the insulating layer.
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