Battery Module Output Electrode Insulation for Short-Circuit Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing battery module designs, where the first and second output electrodes are arranged on the same side, increase the risk of short-circuiting during assembly due to their close proximity, compromising safety and energy density.
Innovation Solution
A battery module design featuring a fixing plate with an insulating portion between the first and second output electrodes, which separates them and increases the creepage distance, preventing short-circuits and enhancing safety while maintaining energy density by reducing the thickness of the fixing plate and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first and second output electrodes are arranged on the same side of the battery module to simplify wiring, then the wiring becomes easy and tidy, but the risk of short-circuiting increases due to close proximity
Solution Approach 1:
An insulating plate is introduced as an intermediary component between the first and second output electrodes. The insulating plate includes an insulating portion that physically separates the two electrodes, preventing direct contact and short-circuiting while allowing both electrodes to remain accessible on the same side for convenient wiring connections.
2Reliability
If the insulating portion is added to separate the output electrodes, then safety is improved by preventing short-circuits, but the complexity of the structure increases
Solution Approach 1:
The insulating plate serves multiple functions simultaneously: it provides electrical insulation between the first and second output electrodes to prevent short-circuiting, and it acts as a structural support component for mounting the electrodes. This multi-functionality reduces the need for additional separate insulating components, thereby limiting the increase in structural complexity.
3Ease of manufacture
If the fixing plate thickness is reduced to lower costs, then manufacturing cost decreases, but the insulating capability and separation distance may be compromised
Solution Approach 1:
The insulating plate features a localized insulating portion with increased thickness specifically positioned between the first and second output electrodes. The rest of the insulating plate maintains a thinner profile to reduce material consumption and manufacturing cost. This local quality variation ensures adequate insulation capability where needed while minimizing overall material usage.
Data Source
AI summary
The present application relates to a battery module and a battery pack, the battery module including a battery cell arrangement structure, bus bars and a fixing plate, where the battery cell arrangement structure includes a plurality of battery cells; the plurality of battery cells are electrically connected by means of a plurality of the bus bars to form a first output electrode of the battery module and a second output electrode of the battery module, and the first output electrode of the battery module and the second output electrode of the battery module are arranged at a same end of the battery module along a horizontal direction; the fixing plate is provided with an insulating portion, and at least a part of the insulating portion is located between the first output electrode of the battery module and the second output electrode of the battery module.