Battery Unit Junction Box Layout to Prevent Terminal Short Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing battery unit layout is restricted due to the central placement of the junction box, limiting the space for device placement and increasing the risk of short circuits between terminals.
Innovation Solution
The battery unit design positions the junction box and service plug offset from the center, with the junction box at one side and the battery control unit and cooling water supply ports at the other, allowing for a more flexible layout and preventing short circuits by arranging terminals at the ends of the battery module row.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the junction box is disposed at the central part connecting inner battery modules, then the electrical connection is achieved, but the layout of devices is restricted
Solution Approach 1:
The service plug connection is extracted from the central junction box location and relocated to the end of the battery module row. This allows the junction box to be positioned at the end alongside the service plug, freeing up the central area for other device placements and improving overall layout flexibility while maintaining electrical connection functionality.
Solution Approach 2:
The connection architecture is reorganized by transitioning from a central-junction-box configuration to an end-oriented configuration where the service plug connects to end battery modules. This spatial reorganization in the longitudinal dimension of the battery row enables better device layout in the transverse dimension.
2Reliability
If the junction box is disposed at the central part, then the electrical connection is achieved, but the risk of short circuits between terminals increases
Solution Approach 1:
The service plug connection is extracted from the central junction box location and relocated to the end of the battery module row. This spatial separation increases the distance between positive and negative terminals, reducing the risk of short circuits while maintaining electrical connection functionality.
Solution Approach 2:
The battery module connections are configured asymmetrically with the service plug connecting to end battery modules rather than central ones. This asymmetric arrangement naturally separates terminals of opposite polarity, creating inherent short-circuit prevention through increased spatial separation.
Data Source
AI summary
A battery unit includes: a battery module row formed of four battery modules; and a junction box. The junction box includes a first terminal connected to a first battery module which is a battery module positioned at an end of the battery module row, and a second terminal connected to a second battery module adjacent to the first battery module.