Flexible Battery Module Structure for Curved Bicycle Frames
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Solution Overview
Problem
Existing battery modules for electric bicycles are limited in versatility due to their straight arrangement, restricting their use to straight lower tubes and lacking adaptability to curved frames.
Innovation Solution
A battery module comprising a plurality of battery assemblies connected by a flexible rod that can be bent to form a curved structure, allowing installation on bicycle frames with various curvatures, and featuring conductive elastic pieces for electrical connections between assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple battery cells are connected in parallel to increase current delivery capability, then the amount of connection material required increases, but this leads to increased module width and difficulty in fitting into vehicle battery packs
Solution Approach 1:
The patent transitions from a planar arrangement where battery cells are connected in parallel across the width of the module to a three-dimensional arrangement where cells are stacked vertically and connected in series. This dimensional change eliminates the need for extensive lateral connection materials while maintaining electrical connectivity through vertical stacking and series configuration.
Solution Approach 2:
The battery module is segmented into multiple stacks, each containing series-connected battery cells. This segmentation allows the module to achieve high power output through series connection of multiple smaller units, avoiding the need for large parallel connection areas while maintaining scalability.
2Power
If battery cells are connected in series to increase voltage output, then the number of connection points increases, but this complicates the connection structure and increases manufacturing complexity
Solution Approach 1:
Multiple battery cell connection functions are merged into a single integrated connection structure. The connection structure includes a first connection piece that simultaneously connects multiple first battery cells, and a second connection piece that connects multiple second battery cells, reducing the number of discrete connection points and simplifying the overall structure.
Solution Approach 2:
The connection structure is designed as a universal component that can connect multiple battery cells simultaneously. The first connection piece and second connection piece serve multiple functions: providing electrical connectivity, mechanical support, and structural integration, thereby reducing overall system complexity.
3Power
If extensive connection material is used to connect battery cells in parallel, then current delivery is improved, but the module width increases and fitting into vehicle battery packs becomes difficult
Solution Approach 1:
The patent eliminates the need for extensive lateral connection materials by transitioning to a vertical stacking arrangement where battery cells are connected in series. Current delivery is maintained through the series connection architecture, which achieves high power output without requiring wide module dimensions.
Solution Approach 2:
The patent extracts the parallel connection requirement entirely from the system architecture. By designing battery cells with opposite polarities facing each other and connecting them in series through integrated connection pieces, the need for additional parallel connection materials is completely eliminated, reducing module width.
Data Source
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AI summary
Disclosed is a battery module, which includes a plurality of battery assemblies and a flexible rod. Each battery assembly includes a frame and at least one battery unit, and the battery unit is disposed within the frame. The flexible rod sequentially passes through the battery assemblies, and the battery assemblies jointly construct a curved structure by bending the flexible rod.