Battery Module Flex Board Layout to Prevent Assembly Rising
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Solution Overview
Problem
Flexible printed boards in battery modules are prone to deformation and deflection during assembly, leading to unintended rising and reduced assemblability.
Innovation Solution
A battery module design that includes a flexible printed board with a rising suppression portion, featuring a protrusion on the plate member and a corresponding hole in the board, which prevents the board from rising and improves positioning, thereby enhancing assemblability by connecting the board to a control board via a connector portion and a bus bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible printed board is used in a battery module, then wiring flexibility and adaptability are improved, but deformation and deflection occur during assembly causing unintended rising
Solution Approach 1:
The rising suppression portion is provided in advance on the flexible printed board at the position where rising is likely to occur during assembly. This preliminary structural feature prevents deformation and deflection before assembly problems occur, allowing the flexible printed board to maintain both flexibility and assembly precision.
2Manufacturing precision
If the flexible printed board is made more rigid to prevent deformation, then assembly precision is improved, but flexibility and adaptability are reduced
Solution Approach 1:
The rising suppression portion is provided only at specific locations on the flexible printed board where deformation is likely to occur during assembly, rather than making the entire board rigid. This localized reinforcement maintains the overall flexibility of the flexible printed board while preventing deformation at critical areas.
3Adaptability or versatility
If the flexible printed board is made more flexible to improve adaptability, then wiring versatility is improved, but deformation and unintended rising during assembly increase
Solution Approach 1:
The flexible printed board maintains high flexibility in most areas for wiring adaptability, while the rising suppression portion is strategically placed only where deformation would cause assembly problems. This localized structural feature allows the board to be flexible where needed while maintaining precision where critical.
Data Source
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AI summary
A flexible printed board (500) includes a first portion (510), a branch portion (500A), and a second portion (520) that branches from the first portion (510) at the branch portion (500A). The first portion (510) of the flexible printed board (500) includes a main body portion (511) and a tip portion (512), and the first portion (510) is connected to the other component (800). A connector portion (1100) is connected to the control board (1000) in an extending direction of the main body portion (511) of the first portion (510). The second portion (520) of the flexible printed board (500) and the control board (1000) are electrically connected to each other via the connector portion (1100). A rising suppression portion (410, 530A) that prevents the flexible printed board (500) from rising from the plate member (400) is provided between the branch portion (520A) and the tip portion of the first portion (510).