Flexible Printed Board Layout to Suppress Battery Module 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 on 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, and ensuring electrical connectivity.
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:
A rising suppression portion is introduced as an intermediary component between the flexible printed board and the plate member. This mediator prevents direct contact and unintended rising by providing a controlled interface that maintains electrical connectivity while suppressing deformation during assembly
Solution Approach 2:
The flexible printed board's own structure is utilized to solve its deformation problem. The rising suppression portion is formed as an integrated feature of the flexible printed board itself, allowing it to self-regulate its position and prevent unintended rising without requiring external intervention
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 flexible printed board is designed with non-uniform local properties. The rising suppression portion has different structural characteristics compared to other regions, providing localized rigidity where needed for positioning while maintaining overall flexibility for wiring adaptability. This local differentiation allows simultaneous achievement of assembly precision and wiring flexibility
3Adaptability or versatility
If the flexible printed board is made more flexible to improve adaptability, then wiring flexibility is improved, but deformation and unintended rising increase
Solution Approach 1:
The rising suppression portion is designed as a flexible structural feature integrated into the flexible printed board. This flexible element can adapt to assembly variations and maintain contact pressure to suppress unintended rising, allowing the board to remain flexible for wiring adaptability while preventing assembly precision degradation
Data Source
AI summary
A flexible printed board includes a first portion, a branch portion, and a second portion that branches from the first portion at the branch portion. The first portion of the flexible printed board includes a main body portion and a tip portion, and the first portion is connected to the other component. A connector portion is connected to the control board in an extending direction of the main body portion of the first portion. The second portion of the flexible printed board and the control board are electrically connected to each other via the connector portion. A rising suppression portion that prevents the flexible printed board from rising from the plate member is provided between the branch portion and the tip portion of the first portion.