Battery cell and electric device

By incorporating through holes in the battery casing and utilizing the design of insulating components and metal conductors, the problem of increased internal resistance of the battery cell caused by the contact resistance between the built-in metal conductors and rivets was solved, thereby improving battery cell performance and simplifying the manufacturing process.

CN224652537UActive Publication Date: 2026-08-18HUIZHOU LIWINON NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202521354528.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-27
Publication Date
2026-08-18
Estimated Expiration
2035-06-27

AI Technical Summary

Technical Problem

The contact resistance between the built-in metal conductor and the rivet in existing batteries increases the internal resistance of the cell, affecting cell performance.

Method used

The design employs an insulating component and a metal conductor. The metal conductor passes through a through hole in the battery casing, with part extending to the inside to connect to the first insulating component and the other part extending to the outside to connect to the second insulating component. This eliminates the need for rivets and their riveting process, allowing the conductor to be directly led out from inside the battery casing to the outside.

Benefits of technology

It effectively reduces the internal resistance of the electrode post, improves cell performance, simplifies the processing technology, and saves material costs.

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Abstract

The utility model discloses a kind of battery unit and electric equipment, and battery unit includes battery shell and electrode assembly.Electrode assembly includes insulating component and metal conductor.Electricity shell is equipped with through-hole.Insulating component includes first insulating piece and second insulating piece.First insulating piece is connected to battery shell inner side, and second insulating piece is connected to battery shell outer side.Metal conductor is worn through hole, and part of metal conductor extends to battery shell inner side and is connected first insulating piece, and another part extends to battery shell outer side and is connected second insulating piece.Metal conductor of the scheme can be directly led out from battery shell to battery shell outside, can effectively reduce pole column internal resistance, improve battery performance.And, the scheme can omit rivet and its riveting process, effectively simplify processing technology, save material cost.
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