Adjustable Battery Cross Member for Vehicle Substructure
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Solution Overview
Problem
The existing vehicle substructure designs, such as those described in Patent Document 1, are inflexible and do not allow for easy adjustment of the battery case arrangement based on the type and size of batteries housed, limiting adaptability.
Innovation Solution
A vehicle substructure featuring a battery case with a bottomed case pan and a case cover, a floor panel, and a pair of right and left seat frames with mounting holes for fastening a cross member that extends in the vehicle width direction, allowing for adjustable mounting positions of the battery cross member in the vehicle front-rear direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the floor cross member is joined at both ends to the sub side sill, then the side sill is prevented from collapsing inward during lateral collision, but the arrangement in the battery case cannot be easily changed depending on battery type and size
Solution Approach 1:
The floor cross member is divided into a first cross member and a second cross member that can be independently positioned. The first cross member connects to the sub side sill for structural support, while the second cross member can be adjusted to accommodate different battery arrangements, resolving the contradiction between structural integrity and adaptability.
Solution Approach 2:
The second cross member is designed to be movable or adjustable in position along the sub side sill, allowing the battery case arrangement to be dynamically changed according to different battery types and sizes, while the first cross member remains fixed to maintain structural stability.
2Stability of the object's composition
If the cross member is fixed at both ends, then structural stability is improved, but adaptability to different battery configurations is reduced
Solution Approach 1:
The cross member system is segmented into a fixed first cross member for stability and an adjustable second cross member for adaptability, allowing the system to simultaneously achieve both structural stability and configuration flexibility.
Solution Approach 2:
The second cross member serves multiple functions: it provides structural support when needed and can be repositioned to accommodate various battery configurations, making the overall structure universally adaptable to different battery types and sizes.
Data Source
AI summary
A vehicle substructure is capable of changing arrangement in a battery case depending on the type and/or size of batteries. The vehicle substructure includes: a battery case having a battery housed therein and including a bottomed case pan having an opening at a top thereof, and a case cover to close the opening of the case pan; a floor panel positioned above the battery case; a pair of right and left seat frames fixed to a top surface of the floor panel; and a battery cross member extending in a vehicle width direction in the battery case, fastened to the pair of right and left seat frames and fixed to the floor panel, wherein the pair of right and left seat frames extend in a vehicle front-rear direction and are provided with mounting holes in the vehicle front-rear direction for fastening the battery cross member.