Battery Cell Adapter Reinforcement for Accurate Bending
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Solution Overview
Problem
Current battery adapters, being soft and thin to facilitate bending, easily offset during the bending process, leading to improper installation of the electrode assembly and reduced adapter lifespan due to local stress when forced into the battery shell.
Innovation Solution
Incorporating a reinforcing portion on the adapter's connecting piece, positioned to limit the bending axis, ensuring the adapter bends along a predetermined path and reducing the risk of offset, thereby enhancing the adapter's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adapter is made soft and thin to facilitate bending, then the ease of operation is improved, but the manufacturing precision deteriorates because the adapter bends easily in non-predetermined areas causing crease offset
Solution Approach 1:
The adapter structure is divided into different regions with different properties: the bending portion is made soft and thin for easy bending, while the third connecting portion is made harder and thicker to prevent unwanted bending and maintain positioning accuracy. This local differentiation of material properties resolves the contradiction between ease of bending and bending position accuracy.
Solution Approach 2:
The adapter is segmented into multiple portions with distinct functions: the first connecting portion, second connecting portion, third connecting portion, and bending portion. Each segment has optimized thickness and material properties suited to its specific function, allowing the bending portion to be flexible while other portions maintain structural integrity and positioning accuracy.
2Ease of operation
If the adapter is made soft and thin to facilitate bending, then the ease of operation is improved, but the reliability deteriorates because the adapter bends easily in non-predetermined areas causing installation problems and local stress
Solution Approach 1:
Different portions of the adapter have different thicknesses and material properties optimized for their specific functions. The third connecting portion is made harder and thicker to prevent unwanted bending and maintain reliable positioning, while the bending portion remains soft and thin for ease of installation. This local differentiation resolves the contradiction between ease of operation and reliability.
Solution Approach 2:
The adapter is divided into functional segments where the bending portion handles the flexibility requirement while the third connecting portion handles the positioning and structural integrity requirement. This segmentation allows each part to be optimized for its specific function, improving overall reliability while maintaining ease of operation.
3Productivity
If the adapter is forcibly installed into the battery shell, then the productivity is improved by avoiding installation delays, but the reliability deteriorates because the adapter experiences local stress that reduces its service life
Solution Approach 1:
The third connecting portion is designed with increased hardness and thickness to provide structural support and maintain positioning accuracy during installation. This allows the adapter to be installed without forcing, as the hardened portion resists unwanted deformation, thereby maintaining both installation efficiency and adapter service life.
Solution Approach 2:
The third connecting portion is pre-hardened and designed with sufficient thickness to withstand installation forces without deforming. This beforehand strengthening prevents the need for forced installation, allowing the adapter to be installed smoothly while maintaining its service life.
Data Source
AI summary
A battery cell is provided. The battery cell includes a tab, an electrode terminal, an adapter for electrical connection between the electrode terminal and the tab. The adapter includes a first connecting portion for electrical connection with the electrode terminal; a second connecting portion for electrical connection with the tab; a third connecting portion for connecting the first connecting portion and the second connecting portion; and a bending portion, the third connecting portion is connected with the first connecting portion by the bending portion and the third connecting portion is connected with the second connecting portion by the bending portion; the third connecting portion includes a reinforcing portion, and the reinforcing portion is located at the connection of the third connecting portion and the bending portion; the minimum distance L from an edge of the reinforcing portion to a center line of the bending portion satisfies: R<L<(R+2).