Button Battery Cover Assembly With Counterbore for Higher Capacity
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Solution Overview
Problem
Traditional button batteries face a trade-off between increasing capacity and reducing size, as enhancing endurance typically increases thickness and volume, while reducing size decreases capacity and endurance.
Innovation Solution
A cover assembly for batteries that includes a top cover with a counterbore to accommodate an anode piece without increasing thickness, allowing for a larger accommodating cavity volume, ensuring both high capacity and small volume without compromising one parameter for the other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the battery capacity is increased to enhance endurance, then the energy storage capability is improved, but the thickness and volume of the button battery increase
Solution Approach 1:
The anode piece is nested within the counterbore of the top cover, utilizing the vertical space inside the cover rather than extending the external dimensions. This nesting approach allows the anode piece to be accommodated within the existing volume envelope, enabling increased capacity without proportionally increasing battery volume.
Solution Approach 2:
The counterbore creates a recessed region in the top cover that utilizes the thickness dimension internally. By recessing the top cover surface to form the counterbore, the design transforms the external thickness constraint into an internal volumetric resource, allowing the anode piece to occupy space that would otherwise be part of the cover structure.
2Volume of moving object
If the thickness and volume of the button battery are reduced, then the miniaturization is achieved, but the capacity and endurance of the battery are reduced
Solution Approach 1:
The top cover is designed with non-uniform thickness through the counterbore recess, creating a local variation in material distribution. The cover has greater thickness in regions where structural strength is needed and reduced thickness where the counterbore is formed, allowing optimized space utilization for the anode piece while maintaining overall battery compactness.
Solution Approach 2:
The anode piece is nested within the counterbore of the top cover, utilizing the vertical space inside the cover rather than extending the external dimensions. This nesting approach allows the anode piece to be accommodated within the existing volume envelope, enabling increased capacity without proportionally increasing battery volume.
3Quantity of substance
If the traditional button battery structure is used, then the manufacturing simplicity is maintained, but it cannot achieve both large capacity and small volume simultaneously
Solution Approach 1:
The top cover is segmented into different functional regions: the main cover body providing structural support and the counterbore region providing anode accommodation. This segmentation allows each region to be optimized for its specific function while maintaining manufacturability through standard forming processes.
Solution Approach 2:
The top cover serves multiple functions: it provides the structural closure for the battery, houses the anode piece within its counterbore, and maintains the sealing integrity of the battery assembly. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity.
Data Source
AI summary
A cover assembly and a battery are disclosed. The cover assembly is configured to cover a housing provided with an accommodating cavity in the battery and includes a top cover and an anode piece. The top cover is configured to be connected to the housing and cover the accommodating cavity, the top cover has a top surface away from the accommodating cavity, and the top surface is recessed towards the accommodating cavity to form a counterbore. The anode piece is disposed on the top cover, the counterbore is configured to accommodate the anode piece, the anode piece has an upper surface away from the accommodating cavity, and the upper surface is coplanar with the top surface; or the upper surface is closer to the accommodating cavity with respect to the top surface.