Polygonal Flat Battery Stack With Angled Terminal Layout
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Solution Overview
Problem
Conventional assembled batteries face challenges in stacking a large number of low-environment-impact batteries due to the alignment of electrode terminals, which leads to stress and reliability issues, making it difficult to connect and monitor each battery effectively.
Innovation Solution
The solution involves stacking flat batteries in the shape of an N-sided polygon, where each battery has positive and negative terminals extending at different angles, allowing for easy electrical connection in series and reducing stress on the battery structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electrode terminals of each battery extend from the same position in conventional assembled batteries, then the battery structure is simple, but it causes large stress on the assembled battery and adversely affects reliability when stacking a large number of batteries
Solution Approach 1:
The patent applies asymmetry by configuring electrode terminals to extend from different positions (different sides) of each battery rather than from the same position. This asymmetric arrangement distributes stress more evenly across the assembled battery structure, preventing concentration of stress at single points and thereby improving reliability when stacking multiple batteries.
2Device complexity
If electrode terminals of each battery are at the same position, then the battery configuration is simple, but it is difficult to draw out and monitor electrode terminals without causing short circuits
Solution Approach 1:
By configuring positive and negative electrode terminals to extend from different sides of each battery, the patent enables easier access and monitoring of terminals. This asymmetric configuration allows terminals to be drawn out without causing short circuits, as they emerge from separated locations rather than overlapping at the same position.
Solution Approach 2:
The patent transitions from a two-dimensional terminal arrangement (same position on the battery surface) to a three-dimensional distribution (different sides of the battery). This spatial redistribution in multiple dimensions allows for easier terminal access and monitoring while preventing short circuits.
3Power
If a large number of batteries are stacked with terminals at the same position, then the battery voltage increases through series connection, but multiple electrode terminals need insulation treatment to prevent substances from touching them
Solution Approach 1:
The asymmetric configuration of electrode terminals extending from different sides reduces the number of terminals requiring insulation treatment. By distributing terminals spatially, the patent minimizes potential contact points with external substances, thereby reducing insulation complexity while maintaining the series connection voltage increase.
4Ease of manufacture
If electrode terminals are deformed to achieve connection in conventional assembled batteries, then electrical connection is established, but large stress is exerted on the assembled battery
Solution Approach 1:
The patent eliminates the need for terminal deformation by configuring terminals to extend from different sides in an asymmetric arrangement. This allows terminals to be naturally positioned for connection without bending or deforming, thereby establishing electrical connection while avoiding the imposition of large stress on the assembled battery structure.
Data Source
AI summary
Provided is an assembled battery in which a large number of flat batteries can be stacked easily. An assembled battery 1 includes stacked multiple flat batteries A, B, and C in the shape of an N-sided polygon (N is an integer of 3 or more). Each of the multiple flat batteries A, B, and C in the shape of the N-sided polygon has a positive-electrode terminal 21a and a negative-electrode terminal 61a that extend in different directions having 360°/N in between, and the multiple flat batteries A, B, and C are electrically connected in series. The assembled battery 1 also includes multiple N-sided polygonal separating films 71 and 72 disposed between each pair of adjacent ones of the stacked multiple flat batteries A, B, and C to insulate the flat batteries from one another.