Battery Module Housing Structure for Impact-Protected Joining Parts
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Solution Overview
Problem
The housing body of battery cells experiences damage at the joining parts due to impacts, particularly when partition walls are included, which complicates the reduction of such damage.
Innovation Solution
The housing body design incorporates a partition wall and flange arrangement where the partition wall and flange are displaced from each other, with the partition wall positioned closer to the joining part than the flange, reducing the transmission of impact to the joining part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a partition wall is added to separate hollow spaces inside the cover, then the structural stability is improved, but the joining part becomes more vulnerable to impact damage
Solution Approach 1:
The partition wall is intentionally displaced from the joining part in the longitudinal direction, creating a spatial separation that prevents impact forces transmitted through the partition wall from concentrating on the joining part. This dimensional displacement resolves the contradiction by allowing the partition wall to provide structural stability while avoiding becoming a transmission path for impact damage to the joining part.
2Strength
If the partition wall is positioned closer to the joining part, then the structural support is enhanced, but the impact transmission to the joining part increases
Solution Approach 1:
The spatial displacement between the partition wall and joining part creates an intermediary zone that interrupts the direct transmission path of impact forces. This intermediary positioning allows the partition wall to provide structural support to the hollow spaces while preventing it from acting as a direct conduit for impact forces to reach the joining part.
Data Source
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AI summary
A housing body (20) includes a front cover (210) and a side cover (230) that are joined to each other via a joining part (200) and cover at least a part of a battery cell (100). The side cover (230) includes a partition wall (236) separating a lower hollow space (237) and an upper hollow space (238) inside the side cover (230) in a predetermined direction. The partition wall (236) and opposite ends of the joining part (200) in the predetermined direction are displaced from each other in the predetermined direction.