Battery cells, batteries, and power consumption devices

The battery cell design with an integrated case and support member addresses connection failures and leakage issues by supporting the electrode assembly, enhancing structural integrity and improving safety and service life.

JP7864851B2Active Publication Date: 2026-05-25CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
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Patent Information

Authority / Receiving Office
JP Ā· JP
Patent Type
Patents
Current Assignee / Owner
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
Filing Date
2022-11-08
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Battery cells in electric vehicles often experience liquid leakage and short circuits due to connection failures between the end cap and the case, leading to a relatively short service life and safety risks.

Method used

The battery cell design features an integrated case with a bottom wall and side walls, where the electrode posts are installed on the bottom wall opposite the end cap, providing support to the electrode assembly and reducing the transmission of forces, and includes a support member to enhance load-bearing and mitigate local stress.

Benefits of technology

This design reduces the risk of connection failure and leakage, improving the safety and service life of the battery cell by mitigating stress and deformation, and enhancing the structural integrity of the electrode assembly.

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Patent Text Reader

Abstract

This application provides a battery cell, a battery, and an electric power consumption device, and belongs to the field of battery technology. The battery cell includes a case, an end cap, an electrode assembly, and a terminal post. The case includes an integrally formed bottom wall and side walls. Along a first direction, the bottom wall is installed at one end of the side walls, and an opening is formed at the other end. The end cap covers the opening. The electrode assembly is accommodated in the case, and the bottom wall is configured to support the electrode assembly along the first direction. The terminal post is installed on the bottom wall and is electrically connected to the electrode assembly.
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