Bus Bar Coupling Branch Structure for Interference-Free Cell Attachment
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Solution Overview
Problem
Current bus bar modules lack flexibility in design, particularly in configuring branch parts from trunk lines to connect with bus bars, leading to interference issues and limited freedom in design, especially when securing branch parts to battery cells while avoiding other components.
Innovation Solution
A bus bar module with a plate-shaped circuit body featuring a trunk line and branch parts, including coupling and parallel branch parts, where the branch parts are designed to connect two adjacent bus bars with flexible extending parts that can be deformed to securely attach to battery cells, reducing interference and allowing for improved design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional rigid branch parts are used to connect bus bars to battery cells, then structural stability is maintained, but design freedom is limited and interference with other components occurs
Solution Approach 1:
The patent employs flexible printed circuit board (FPC) technology to create branch parts that can bend and deform. The circuit body includes extending parts with specified bending radii that allow the branch parts to flexibly adapt to different spatial configurations between bus bars and battery cells, eliminating the need for complex rigid structural designs while maintaining electrical connectivity
Solution Approach 2:
The branch parts are designed with dynamic flexibility through FPC material properties and controlled bending radii. This allows the circuit to adapt its shape during assembly and operation, enabling the bus bars to be positioned at various locations on battery cells without requiring multiple fixed rigid connection structures
2Adaptability or versatility
If multiple separate branch parts are used to connect each bus bar individually, then reliable electrical connection is achieved, but the number of components increases and design freedom decreases
Solution Approach 1:
The patent merges multiple branch part functions into a single integrated circuit body. The FPC structure allows one continuous flexible circuit to provide multiple branching connections to different bus bars and battery cells simultaneously, reducing the total component count while maintaining all necessary electrical connections through its flexible routing capability
3Manufacturing precision
If fixed rigid connections are used between bus bars and battery cells, then manufacturing precision is maintained, but adaptability to different configurations is limited
Solution Approach 1:
The FPC-based branch parts maintain precise electrical connections through their flexible nature. The controlled bending radii ensure that connections are made at precise locations on battery cells while the flexibility allows adaptation to different overall configurations, combining the benefits of precision and adaptability that rigid structures cannot achieve simultaneously
Data Source
AI summary
A bus bar module includes a plurality of bus bars fixed to battery cells, and a circuit body. The circuit body includes a trunk line part extending along a first direction, and a plurality of branch parts. The branch parts include a coupling branch part connected to the two bus bars. The coupling branch part includes a first fixed part fixed to a first bus bar, a second fixed part fixed to a second bus bar, a first extending part, and a second extending part. The second extending part has a length with which the first bus bar and the second bus bar can be fixed to the battery cell while bending the second extending part to be deformed.