Battery and electric device

By dividing the electrode assembly into multiple parts and using a flat cover plate and lower plastic component, the problems of electrode assembly bending deformation and electrode tab tearing and breakage are solved, thus achieving high battery capacity and improved safety.

CN224190959UActive Publication Date: 2026-05-01SVOLT ENERGY TECHNOLOGY CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202520852478.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-05-01
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

Existing battery electrode packs are bent and deformed due to being too long or too wide, resulting in defects such as wrinkles, deformation, delamination, and breakage of the electrode sheets. In addition, the electrode tabs are prone to getting stuck between the cover plate and the lower plastic part and tearing, leading to battery damage and failure.

Method used

The electrode assembly is divided into multiple electrode components, and the cover plate and lower plastic part are designed as flat structures. The electrode components are fixed by fasteners and fixing sleeves to avoid bending deformation caused by the electrode assembly being too long or too wide, and to prevent tearing and breakage caused by the electrode tabs getting stuck in the gap.

Benefits of technology

It effectively avoids bending deformation of the electrode assembly and tearing and breakage of the electrode tabs, extends the battery's lifespan, improves the battery's capacity and safety performance, and enhances the utilization rate of the internal space of the casing.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and an electric device. The battery comprises a shell, a pole group and an end cover, openings are formed in the two ends of the shell in the first direction, the pole group comprises at least two pole group split bodies arranged in the second direction, the end cover comprises a cover plate and a lower plastic part, the cover plate covers the openings, and the lower plastic part is arranged on the side, facing the shell, of the cover plate and abuts against the pole group. The cover plate and the lower plastic part are both of a flat plate structure, so that the lower plastic part can be well attached to the cover plate, the defects of tab clamping and the like caused by an overlarge gap between the cover plate and the lower plastic part are prevented, the tab is further prevented from being torn and broken, and the service life of the battery is prolonged; the cover plate adopts a flat plate structure, so that the pole group is supported in a more balanced manner, and the internal space of the shell is saved; the pole group is divided into the plurality of pole group split bodies, so that the size of the single pole group split body is reduced, and the condition that the pole group is bent and deformed due to overlarge size is avoided.
Need to check novelty before this filing date? Find Prior Art