Battery Module Collector Plate Mounting With Inclined Insulator Surfaces
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Solution Overview
Problem
The existing battery module designs face challenges in achieving high accuracy due to the tolerance issues in current collector plates produced by bending sheet metal, which complicates the production of current collecting structures.
Innovation Solution
The electric power storage module incorporates a configuration with current collector plates and insulating members featuring inclined surface parts, allowing for precise mounting and reduced tolerance, with the insulating member having a part disposed between the batteries and the current collector plates, and the plates arranged orthogonally to the height direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If current collector plates are produced by bending sheet metal, then manufacturing is easier, but tolerance increases and manufacturing precision deteriorates
Solution Approach 1:
The current collector plate is divided into multiple plate parts (first plate part, second plate part, third plate part) that are separately formed and then assembled. Each plate part can be manufactured with tighter tolerances individually, and the segmentation allows for easier assembly while maintaining overall precision.
Solution Approach 2:
An insulating member is introduced as an intermediary component between overlapping current collector plates. This insulating member includes inclined surface parts that facilitate precise positioning and mounting of the plates, thereby suppressing tolerance accumulation while maintaining ease of manufacture.
2Adaptability or versatility
If current collector plates include stepped parts for connection, then structural flexibility is improved, but tolerance accumulation increases
Solution Approach 1:
The current collector plate is segmented into multiple plate parts connected by inclined surface parts rather than traditional stepped parts. This segmentation maintains structural flexibility for adapting to different battery configurations while reducing tolerance accumulation through the inclined surface mounting mechanism.
Solution Approach 2:
The insulating member with inclined surface parts acts as a mediator between different plate parts, enabling precise alignment and positioning. This intermediary structure allows for flexible assembly while suppressing the tolerance issues that would otherwise result from multiple connected components.
3Productivity
If multiple current collector plates are stacked with insulating members, then electrical connection efficiency is improved, but assembly complexity increases
Solution Approach 1:
The insulating member combines multiple functions: electrical insulation between plates, mechanical support for mounting plates, and positioning through inclined surface parts. This merging of functions reduces the number of separate components needed, thereby simplifying assembly while maintaining efficient electrical connections between multiple current collector plates.
Data Source
AI summary
A battery module includes a plurality of batteries, current collector plates each connecting the plurality of batteries, and an upper holder including a part disposed between the plurality of batteries and the current collector plates. The plurality of batteries is arranged in a direction orthogonal to the height direction of the batteries. The upper holder includes a plurality of inclined surface parts which is inclined with respect to the arrangement direction and on which the current collector plate is mounted. A plurality of inclined surface parts is disposed in a row.