Battery Module FPC Positioning Structure for Accurate Assembly
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Solution Overview
Problem
Flexible printed boards in battery modules are prone to deformation during assembly, leading to unintended rising and positional displacement, which complicates the assembly process.
Innovation Solution
A battery module design that includes a positioning system with protrusions on the plate member and corresponding holes in the flexible printed board, where the protrusions, which have a columnar portion and a projecting projection, are used to securely position the flexible printed board by engaging with the connector portion, preventing displacement during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible printed board is used as wiring in a battery module, then flexibility and adaptability are improved, but deformation and deflection occur during assembly causing positional displacement
Solution Approach 1:
The patent applies preliminary action by providing positioning protrusions on the plate member before assembly, which engage with positioning holes in the flexible printed board to pre-establish correct positioning. This prevents deformation and deflection during the assembly process by constraining the board's movement in advance, thereby maintaining manufacturing precision while preserving the flexibility benefits of the printed board.
2Reliability
If the flexible printed board is connected to the control board, then electrical connection is achieved, but unintended rising and deflection occur during assembly
Solution Approach 1:
The patent introduces positioning protrusions as intermediary elements between the plate member and the flexible printed board. These protrusions act as mediators that facilitate accurate positioning and prevent unintended rising during assembly, thereby improving ease of operation while ensuring reliable electrical connection through proper alignment of the connector portion.
3Manufacturing precision
If positioning structures are added to prevent deflection, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the positioning function into discrete positioning protrusions distributed on the plate member. Each protrusion is a simple, independent element that engages with corresponding holes in the flexible printed board. This segmented approach achieves high positioning accuracy without requiring a complex monolithic positioning system, thereby maintaining structural simplicity.
Data Source
AI summary
A flexible printed board has deflection with the flexible printed board and a control board being connected to each other. A positioning portion for the flexible printed board on a plate member is provided. The positioning portion is provided with a protrusion provided in the plate member and a hole provided in the flexible printed board. The flexible printed board is positioned by a side surface of the hole being pressed against the protrusion due to the deflection of the flexible printed board. The protrusion includes a columnar portion that extends substantially vertically from a main surface of the plate member, and a projection that projects from the columnar portion in a direction intersecting the columnar portion.