Integrated Battery Module Restraint Structure for Lower Weight
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Solution Overview
Problem
Existing battery module designs face inefficiencies in mount efficiency and weight increase due to separate structural members for binding and restraint, which occupy space and increase weight, necessitating a solution that integrates these functions while minimizing weight.
Innovation Solution
A battery module design featuring side restraint members that extend in the stacked direction and integrate the functions of cross members and binding bars, coupled with end restraint members that intersect the stacked direction, reducing the need for separate structural members and enhancing mount efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate structural members (binding bars and end plates) are used to restrain battery cells, then the battery module can be held and protected, but the weight of the battery module increases
Solution Approach 1:
The binding bar and end plate are integrated into a single一体化 restraint member that performs both functions simultaneously, eliminating the need for separate components and reducing overall weight while maintaining protection performance
Solution Approach 2:
The restraint member is designed to serve multiple functions: it acts as both a binding bar (restraining in the first direction) and an end plate (restraining in the second direction), allowing one component to fulfill the roles previously requiring separate parts
2Reliability
If separate structural members (binding bars and end plates) are used to restrain battery cells, then the battery module can be held and protected, but the mounting space is reduced
Solution Approach 1:
The binding bar and end plate are merged into a single restraint member with an L-shaped cross-section that extends in both the first and second directions, eliminating the space that would have been occupied by separate components and improving mounting space efficiency
3Reliability
If multiple separate structural members are used, then the battery module can be restrained in multiple directions, but the device complexity increases
Solution Approach 1:
Multiple restraint functions are merged into a single member design, reducing the number of components from multiple separate pieces (binding bars and end plates) to one integrated restraint member, thereby simplifying the overall structure
Solution Approach 2:
The restraint member is designed as a multi-functional component that provides restraint in multiple directions (first direction and second direction) simultaneously, eliminating the need for multiple specialized components and reducing structural complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design improves mount efficiency and reduces weight by integrating structural functions within the battery module, providing sufficient strength rigidity and protection without the need for additional structural members, thus enhancing the overall performance and efficiency of the battery module.
Implementation Method 1
the first surface and the side restraint member are joined with each other by a joining member
Data Source
AI summary
A battery module includes: a stacked body in which a plurality of secondary batteries are stacked; and a side restraint member which faces a first surface of the stacked body, and which extends in a stacked direction of the stacked body. The first surface is a surface in a vertical direction with respect to a lower surface of the stacked body, and is a surface along the stacked direction, and the first surface and the side restraint member are joined with each other by a joining member.