Bus Bar Module Support Base for Stable Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing bus bar modules face instability in fastening due to misalignment of the support portion with respect to the bus bar, leading to reduced workability and unstable electrical connections with the electrodes of the battery assembly.
Innovation Solution
The bus bar module design includes a support portion with a base portion that abuts against the inner side surface of the bus bar's projection, preventing excessive displacement and ensuring stable electrical connection, even when the support portion is shifted relative to the bus bar, by having the base portion's side surfaces overlap with the projection's inner surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support portion is provided in the case to support the bus bar, then the bus bar can be supported, but if the support portion is shifted with respect to the bus bar, the support becomes unstable and workability is reduced
Solution Approach 1:
The base portion is extended in the width direction beyond the support portion, creating an L-shaped configuration. This dimensional extension allows the base portion to contact the inner side surface of the bus bar's projection, providing support stability even when the support portion is shifted, while maintaining ease of assembly
2Manufacturing precision
If the support portion is largely shifted with respect to the bus bar, then misalignment occurs, but the support portion may enter the fastening part and make the fastening state unstable
Solution Approach 1:
The base portion acts as an intermediary element between the support portion and the bus bar. It provides a contact surface on the inner side of the projection that prevents the support portion from entering the fastening area, thus maintaining fastening stability even when misalignment occurs during assembly
3Adaptability or versatility
If the support portion is shifted relative to the bus bar, then displacement occurs, but the side surface of the base portion abuts against the inner side surface of the projection to prevent excessive displacement
Solution Approach 1:
By extending the base portion in the width direction to overlap with the projection's inner side surface, the design creates a constraint mechanism that tolerates support portion displacement while preventing excessive movement that would compromise connection reliability
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A bus bar includes a plurality of fastening holes in which a plurality of electrodes of a single cell is fastened with a nut, and a plurality of projections formed between the fastening holes and projecting in a direction away from the single cell. A case includes a bus bar hosing portion in which the bus bar is housed, and a support portion disposed in the projection of the bus bar housed in the bus bar housing portion and abutting against a back surface of the projection to support the bus bar. The support portion includes a base portion protruding in an arrangement direction of the fastening holes. At least a part of both side surfaces of the base portion overlaps with an inner side surface of the projection as viewed from a direction perpendicular to a fastening direction in which the bus bar is fastened to the electrode.