Battery cover plate assembly and battery monomer

By setting a support structure between the electrode base plate and the insulation components, the problems of thermal damage and sealing detection during the welding process are solved, achieving efficient and reliable welding and gas diffusion, thus improving the safety and energy density of the battery.

CN224417860UActive Publication Date: 2026-06-26ENVISION RUITAI DYNAMICS TECH (SHANGHAI) CO LTD +1
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Patent Information

Application Number
CN202521614128.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-30
Publication Date
2026-06-26
Estimated Expiration
2035-07-30

AI Technical Summary

Technical Problem

The welding process of existing battery cells is prone to causing the insulating material to melt through, which affects the safety and sealing performance of the battery. In addition, the traditional welding process is cumbersome and reduces the energy density of the battery.

Method used

A support structure is set between the pole base plate and the insulation component to act as a heat buffer layer to absorb welding heat, and a three-dimensional structure is used to form a heat-barrier cavity to ensure that gas can diffuse to the sealing ring installation area, thus achieving efficient and reliable welding.

Benefits of technology

This effectively avoids the problem of insulation material melting through, improves welding speed and the accuracy of sealing inspection, and enhances battery safety and energy density.

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Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery cover plate assembly and a battery monomer, which comprise a cover plate body, a battery cover plate and a battery cover plate, the pole assembly comprises a pole body and a pole bottom plate, the pole bottom plate comprises a first surface and a second surface, one end of the pole body is connected with the first surface, and the pole body penetrates through the pole hole; the insulating component is positioned between the inner wall and the first surface, and the insulating component is provided with a through hole for the pole body to pass through; a support structure is arranged between the insulation assembly and the first surface, the second surface is provided with a tab welding area, the support structure is at least partially located in a projection area of the tab welding area on the insulation assembly along a preset direction, and the preset direction is the thickness direction of the pole bottom plate. According to the utility model, the supporting structure is arranged between the pole bottom plate and the insulating component, so that the problem of thermal damage in the welding process is solved.
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