Battery Module Bracket Groove for Protected Busbar Packaging
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Solution Overview
Problem
The challenge of improving energy density in lithium batteries is exacerbated by the space occupied by electrical connecting members and brackets, which affect the compactness of battery modules and increase the risk of damage.
Innovation Solution
A battery module design featuring a bracket with a groove to receive electrical connecting members on the side of the battery cell group, combined with a binding member to secure the connecting member to the bracket, reducing space occupation and protecting the connecting member from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electrical connecting members are arranged outside the bracket, then the bracket structure is simple, but the space utilization inside the battery module is reduced and the connecting member is prone to damage
Solution Approach 1:
The electrical connecting member is nested within the groove of the bracket, with the groove providing a dedicated receptacle that accommodates the connecting member. This nesting arrangement integrates the connecting member into the bracket structure, improving space utilization while maintaining structural simplicity.
Solution Approach 2:
The groove extends in the first direction (length direction of the bracket), utilizing the longitudinal dimension of the bracket to accommodate the electrical connecting member. This dimensional approach allows the connecting member to be integrated along the length of the bracket without increasing width or height.
2Device complexity
If electrical connecting members are arranged outside the bracket, then the bracket structure is simple, but the risk of damage to the connecting member increases
Solution Approach 1:
The groove provides a protective recess that shields the electrical connecting member from external impacts and mechanical damage. By nesting the connecting member within the groove, the bracket structure itself acts as a protective element without requiring additional complex protective mechanisms.
Solution Approach 2:
The groove structure provides pre-established protection for the electrical connecting member, cushioning it against potential damage before any harmful event occurs. The recessed design inherently protects the connecting member from external forces that might otherwise cause damage.
3Reliability
If the groove is provided on the side of the bracket facing away from the battery cell group, then the electrical connecting member is better protected, but the bracket occupies more space in that direction
Solution Approach 1:
The groove is localized to a specific region of the bracket (the side facing away from the battery cell group), providing protection only where needed for the electrical connecting member. This localized approach ensures protection while minimizing the overall space occupation of the bracket, as the groove is integrated into the existing bracket geometry rather than adding a separate protective structure.
Data Source
AI summary
A battery module includes a battery cell group, a bracket, a binding member, and an electrical connecting member. The battery cell group includes a plurality of battery cells arranged in a first direction. Each of the battery cells includes electrode terminals. The bracket is located on a side of the battery cell group on which the electrode terminals are arranged. A first groove extending in the first direction is provided in the bracket, and a length direction of the bracket is parallel to the first direction. The electrical connecting member is at least partially received in the first groove. First through holes are provided in a bottom wall of the first groove, and the binding member passes through the first through holes and binds and fixes the electrical connecting member to the bracket.