A battery cell housing and a battery cell
CN224437716UActive Publication Date: 2026-06-30YIBIN CRRC TIMES NEW ENERGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIBIN CRRC TIMES NEW ENERGY CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Interference between the bottom edge of the core and the rounded corner of the battery cell casing can cause decarburization or cracking. Existing technologies solve this problem with a bottom support plate, but this takes up space and affects capacity and efficiency.
Method used
A thinning zone is set between the inner side and the inner bottom of the cell casing, and the rounded corners are hidden in the side wall to form a flat structure, eliminating the need for a bottom support plate and maintaining high utilization of internal space.
Benefits of technology
This avoids failures caused by interference between the bottom edge of the core and the rounded corners, improves cell capacity and assembly efficiency, simplifies the structure, and reduces material costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224437716U_ABST
Abstract
This utility model belongs to the field of battery technology, specifically relating to a battery cell housing and a battery cell. The inner side of the battery cell housing is laterally recessed at one end connecting to the inner bottom surface, forming a thinning area on the sidewall of the battery cell housing. The thinning thickness of the thinning area is less than or equal to 30% of the sidewall thickness of the battery cell housing. A rounded corner between the inner side and the inner bottom surface is located at the lower end of the thinning area, and from the projection view along the height direction of the battery cell housing, the rounded corner is located within the projection plane of the sidewall of the battery cell housing. This utility model avoids failures such as decarburization or cracking caused by interference between the bottom edge of the core and the rounded corner, and eliminates the need for a bottom support plate. It also improves the utilization rate of the internal height space of the battery cell housing, increasing the battery cell capacity without increasing the external dimensions of the battery cell, simplifying the internal structure of the battery cell, reducing material costs, reducing battery cell assembly steps, and improving battery cell assembly efficiency.
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