Battery Module FPC Tab Structure for Easier Control Board Assembly
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Solution Overview
Problem
The existing battery module technologies face challenges in improving the assemblability of flexible printed boards, particularly in connecting the connection portion of the flexible printed board to the connector portion of a control board, leading to difficulties in efficient electrical connection and potential damage during assembly.
Innovation Solution
The battery module design includes a flexible printed board with a tab that protrudes from the region overlapping with the control board, featuring a conductor portion with a dummy portion to guide folding and cutting lines, and a plate member with recesses or projections to facilitate connection and deformation, allowing for improved alignment and connection of the flexible printed board to the control board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connection portion of the flexible printed board is directly connected to the connector portion of the control board, then the electrical connection is established, but the assemblability is poor and damage may occur during assembly
Solution Approach 1:
The tab acts as an intermediary component between the flexible printed board and the control board. It protrudes from the overlapping region and provides a dedicated connection interface that is easier to handle and connect to the connector portion, thereby improving assemblability while maintaining reliable electrical connection.
Solution Approach 2:
The tab is pre-formed and protrudes from the overlapping region before assembly. This preliminary preparation of the connection interface allows for easier alignment and connection to the connector portion during the assembly process, reducing the risk of damage and improving overall assemblability.
2Ease of operation
If the flexible printed board is made flexible for easy installation, then the ease of operation is improved, but the structural stability deteriorates
Solution Approach 1:
The flexible printed board has different structural properties in different regions. The main body remains flexible for easy installation, while the tab portion is reinforced and protrudes to provide structural stability and a reliable connection interface, thereby resolving the contradiction between flexibility and structural stability.
Data Source
AI summary
A control board of a battery module has a connector portion, and a flexible printed board has a connection portion. The flexible printed board and the control board are electrically connected to each other when the connection portion is connected to the connector portion. In a state in which the connection portion is not connected to the connector portion, at least a portion of the connection portion of the flexible printed board is located between the control board and the plate member at a region overlapping with the control board when viewed from a first side. The flexible printed board further has a tab that is provided in a vicinity of the connection portion and that protrudes from the region overlapping with the control board.