Power Storage System Wiring Aggregation for Impedance Consistency
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Solution Overview
Problem
Conventional power storage systems face inefficiencies in installation and material costs due to the need for long connection cables between battery boards and branch boards, leading to increased space requirements and reduced work efficiency.
Innovation Solution
A power storage system design where connection wirings are aggregated in a second frame, allowing for optimized cable length and thickness adjustments to minimize resistance variations, thereby improving installation efficiency and reducing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wirings of identical length are used for parallel connection to host device, then difference in parallel impedance of each secondary battery is reduced, but cable length must be adjusted to farthest distance, requiring unnecessary long cable that increases space requirements, deteriorates wiring work efficiency, and increases material and work costs
Solution Approach 1:
The connection wirings are segmented into two parts: a first wiring connecting the battery board to the first frame, and a second wiring connecting the first frame to the branch board. The wirings are aggregated in the second frame, allowing each battery board to connect to the aggregation point rather than requiring individual long cables to the host device. This segmentation enables shorter cable lengths while maintaining impedance consistency.
Solution Approach 2:
The first frame and second frame serve as intermediary structures that aggregate the connection wirings. Instead of directly connecting each battery board to the host device with long cables, the wirings are gathered and aggregated in the frames, which act as intermediate connection points. This intermediary approach reduces the required cable length while maintaining electrical connection quality.
2Adaptability or versatility
If unnecessarily long cable is used to accommodate farthest distance, then all battery boards can be connected, but space for storing cable is required, material costs and work costs increase
Solution Approach 1:
The connection path is segmented into multiple sections: battery board to first frame, first frame to second frame, and second frame to branch board. This segmentation allows the cable to be routed through structured paths rather than requiring single long cables, reducing total material usage while maintaining connection coverage.
Solution Approach 2:
Multiple connection wirings from different battery boards are merged and aggregated in the second frame. Instead of running separate long cables from each battery board to the host device, the wirings are combined and routed together through the frame structure, reducing total cable material required while maintaining adaptability to connect all battery boards.
Data Source
AI summary
A power storage system of the present technology includes a battery board configured to accommodate a secondary battery, a branch board, a first frame on which the battery board is placed, a second frame on which the branch board is placed, and a plurality of connection wirings that are disposed in the first frame and the second frame and connects the battery board and the branch board. The plurality of connection wirings are aggregated in the second frame.