Battery Pack Upper Cover Structure for Easier Cell Disassembly
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Solution Overview
Problem
Existing power storage devices lack effective recyclability due to complex structural integration of components, making disassembly and reuse challenging.
Innovation Solution
Incorporation of rubber intervention members with intervention spaces and adhesive members, allowing easy detachment of the upper cover by inserting a high-strength steel wire, which cuts through the adhesive and intervention members, facilitating the disassembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive members are used to bond power storage cells and upper cover, then bonding strength is improved, but recyclability deteriorates
Solution Approach 1:
The upper cover is divided into a cover body and a separate pressing member that can be detached. The pressing member is configured to be removable from the cover body, allowing the adhesive member to be selectively removed or cut during recycling while maintaining the bonding strength during normal operation.
Solution Approach 2:
A pressing member is introduced as an intermediary component between the upper cover and power storage cells. This pressing member can be detached and removed, allowing the adhesive member to be selectively cut or removed during recycling while the cover body remains intact for potential reuse.
2Strength
If complex structural integration is used to assemble components, then assembly strength is improved, but ease of disassembly deteriorates
Solution Approach 1:
The upper cover assembly is segmented into a cover body and a separate pressing member that can be easily detached. This segmentation allows the pressing member to be removed first during disassembly, providing access to cut or remove the adhesive member, while maintaining strong assembly during normal operation.
Solution Approach 2:
The pressing member is designed to be preliminarily removable from the cover body before the adhesive member needs to be cut. This preliminary action of removing the pressing member facilitates subsequent disassembly steps by providing access to the adhesive member without requiring destruction of the entire assembly.
Data Source
AI summary
A power storage device includes a plurality of power storage cells arranged in a first direction, an upper cover disposed above the power storage cells, an adhesive member that bonds the power storage cells and the upper cover to each other, and an intervention member made of rubber and interposed between the power storage cells and the upper cover. The intervention member includes a pair of intervention portions extending in the first direction and disposed at positions sandwiching the adhesive member in a second direction orthogonal to both the first direction and an up-down direction. Each intervention portion is provided with an intervention space extending in the first direction.