Grid Module Battery Bus Wiring Layout
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Solution Overview
Problem
The assembly of power storage apparatuses with module batteries arranged in non-linear configurations is challenging due to the risk of short circuits and safety concerns, making it difficult to couple batteries to wiring effectively.
Innovation Solution
A power storage apparatus design featuring module batteries arranged in a grid pattern with perpendicular orientations, using buses with positioning mechanisms to prevent vertical movement and ensure safe electrical connections, reducing the likelihood of short circuits and facilitating assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If module batteries are arranged in non-linear configurations with turns, then wiring coupling operation is eliminated, but short circuits between string groups occur easily compromising safety
Solution Approach 1:
The module battery is divided into multiple independent string groups (first string group, second string group, etc.) that are arranged linearly in series. Each string group is electrically isolated from others through the linear arrangement, preventing short circuits while maintaining ease of wiring coupling operation.
Solution Approach 2:
The patent transitions from non-linear arrangements with turns to a linear one-dimensional arrangement of string groups in series. This dimensional simplification eliminates the short circuit risk associated with turns while preserving operational ease through systematic wiring connection points.
2Reliability
If string groups are arranged linearly in series, then safety is improved by preventing short circuits, but wiring coupling operation becomes more complex
Solution Approach 1:
Positive and negative terminal tabs are pre-positioned at both ends of each string group before assembly. This preliminary placement of electrical connection points simplifies the wiring coupling operation when string groups are arranged linearly in series, as connections can be made systematically at predetermined locations without complex routing.
3Ease of manufacture
If positive and negative terminals are positioned at opposite side walls, then assembly is simplified, but short circuit risk increases in non-linear arrangements
Solution Approach 1:
Each string group is segmented as an independent unit with its own positive and negative terminal tabs. When arranged linearly in series, the terminals of adjacent string groups are positioned at opposite ends of the combined arrangement, maintaining simplified assembly while preventing short circuits through spatial separation.
Solution Approach 2:
The patent extends the terminal positioning from two-dimensional opposite side wall arrangement to a one-dimensional linear series arrangement where terminals are separated along the length of the battery module. This dimensional transition maintains assembly simplicity while enhancing short circuit prevention through increased spatial separation.
Data Source
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AI summary
Two or more module batteries are arranged in an array and connected through wiring. The outer surface of a first side wall of a case faces in a first direction without facing the others of the two or more module batteries. Second and third side walls of the case are spaced from each other in a second direction. The first direction and the second direction are perpendicular to each other. Two or more string groups are arranged linearly in the second direction. A positive bus includes a positive electrode current collecting part, a positive electrode extension part, and a positive electrode feedthrough part. The positive electrode current collecting part extends along the inner surface of the second side wall, the positive electrode extension part extends along the inner surface of the first side wall, and the positive electrode feedthrough part penetrates through the first side wall. The positive electrode current collecting part, the positive electrode extension part, the positive electrode feedthrough part, and the wiring are electrically connected to one another. A negative bus also has a similar structure.