Cover plate assembly, battery cell and electric equipment

By optimizing the design of the pole assembly, including symmetrical arrangement and relational constraints, the problems of cover width and pole flow requirements were solved, the welding effect of the rivet block and busbar was improved, and the flatness and welding reliability of the pole assembly were improved.

CN121355490AActive Publication Date: 2026-01-16SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511893816.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-16
Publication Date
2026-01-16
Estimated Expiration
2045-12-16

AI Technical Summary

Technical Problem

Existing technologies cannot simultaneously meet the width requirements of the cover plate, the current flow requirements of the pole, the current flow requirements of the rivet block, and the welding effect between the pole assembly and the busbar, resulting in surface deformation and unsatisfactory welding effect of the pole assembly during assembly.

Method used

By limiting the width and length of the pole assembly, the flatness and welding effect are controlled while ensuring the current requirements are met. A symmetrical pole and rivet block structure is adopted, plastic parts are used for isolation and insulation, and the size and position of the solder marks are restricted by the relational formula to optimize the design of the cover plate assembly.

Benefits of technology

It effectively reduces the space occupied by the cover plate, ensures the current carrying capacity of the pole assembly, improves the welding effect between the rivet block and the busbar, avoids the phenomenon of false welding, and improves the reliability of the assembly process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a cover plate assembly, a battery cell and electric equipment, and relates to the technical field of batteries, the cover plate assembly comprises a cover plate and a pole assembly, the pole assembly comprises a pole, and the pole is arranged on the cover plate; the pole comprises a base and a pole body, one end of the pole body is connected with the base, the diameter of the joint of the pole body and the base is b, and the length of the pole assembly in the first direction is L; the width of the pole assembly in the second direction is W; wherein the first direction represents the length direction of the cover plate, and the second direction represents the width direction of the cover plate; wherein b, L and W meet the condition that W is greater than or equal to b + 4; b > =; l is less than 60mm; u represents the capacity of the battery cell; c represents the charge-discharge rate of the battery cell; n represents the number of the poles; sigma 1 represents the overcurrent coefficient of the pole. According to the cover plate assembly, the battery cell and the electric equipment, the width requirement of the cover plate, the overcurrent requirement of the pole, the overcurrent requirement of the riveting block and the welding effect between the pole assembly and the busbar can be considered.
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Citation Information

Patent Citations

  • Cover plate assembly and battery cell

    CN120149677A

  • Battery and battery pack

    CN120473677A

  • Battery cell cover plate, battery and battery pack

    CN121097293A

  • Battery monomer, battery, energy storage device and power utilization device

    CN222980743U

  • Battery cell, battery pack, and electric device

    WO2025179848A1