Battery monomer and battery pack

By designing a connector with accommodating space, the problem of poor welding of the connecting piece and the ear in the battery structure is solved, and the connection firmness and overcurrent capability are improved.

CN222654280UActive Publication Date: 2025-03-21SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421056536.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-15
Publication Date
2025-03-21
Estimated Expiration
2034-05-15

AI Technical Summary

Technical Problem

The existing battery structure has poor welding problems such as dummy welding and welding penetration when welding the connecting piece and the pole ear, which affects the connection firmness between the connecting piece and the pole ear.

Method used

A battery cell is designed, including a housing, a top cover assembly, a battery cell and a connecting piece. The connecting part of the connector has a first and a second section connected to the top cover assembly, the pole ear is wound outside the circumference of the second section, and the second section is provided with an accommodating space so that the pole ear is disposed in the accommodating space away from the battery cell.

Benefits of technology

Through this design, the electrical connection between the top cover assembly and the pole ear is realized, which increases the connection firmness and contact area between the pole ear and the connector, and improves the overcurrent capability between the battery cell and the electrical connector.

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Abstract

The utility model discloses a single battery and a battery pack. The single battery comprises a shell, a top cover assembly, a battery cell and a connecting piece, the shell is provided with a containing cavity with an opening in one end, the top cover assembly is connected to the shell and seals the opening, the battery cell is arranged in the containing cavity, and the end, facing the top cover assembly, of the battery cell is provided with a tab; the connecting piece comprises a connecting part, the connecting part is provided with a first section and a second section which are connected, the first section is connected with the top cover assembly, the tab is wound on the circumferential outer side of the second section, the second section is provided with an accommodating space, and one end, far away from the battery cell, of the tab is arranged in the accommodating space. Therefore, by utilizing the insertion matching of the accommodating space and the end part of the tab, the winding operation of the tab on the outer side of the connecting part is facilitated, the connection firmness of the tab and the connecting piece can be increased, the contact area of the tab and the electric connecting piece can be increased, and the overcurrent capacity between the battery cell and the electric connecting piece is improved.
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