Vehicle Base Bracket Layout for Longer Battery Collision Stroke
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Solution Overview
Problem
Existing vehicle base structures do not effectively lengthen the movement stroke of the battery unit during a broadside collision, due to limited space constraints.
Innovation Solution
A vehicle base structure featuring first and second structural members with a bracket system that includes a first wall portion fixed to one structural member, a second wall portion inclined downward, and a third wall portion fixed to the battery case, allowing the battery unit to move outward and downward during a collision, thereby increasing its movement stroke.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the battery unit is disposed using limited space between structural members, then the vehicle base structure is compact, but the movement stroke of the battery unit in a broadside collision is insufficient
Solution Approach 1:
The bracket's second wall portion is configured to extend in an inclined manner from the first wall portion, creating a three-dimensional deformation path. This inclined extension allows the battery unit to move not only horizontally but also vertically during collision, effectively increasing the movement stroke by utilizing the vertical dimension in addition to the horizontal space-constrained dimension.
Solution Approach 2:
The bracket is designed with flexible wall portions that can deform dynamically during collision. The second wall portion's inclined configuration enables the bracket to adapt its deformation path based on collision forces, allowing the battery unit to follow an optimized movement trajectory that maximizes stroke length within the constrained space.
2Length of moving object
If the bracket uses a rigid straight connection between structural members, then the structure is simple, but the battery unit cannot effectively increase movement stroke during collision
Solution Approach 1:
The bracket is divided into multiple wall portions (first, second, and third wall portions) with distinct functions. The second wall portion is specifically configured as an inclined extension that creates the necessary deformation path, while other wall portions provide structural support. This segmentation allows the complex deformation function to be achieved through coordinated action of simpler individual segments.
Solution Approach 2:
The second wall portion extends in an inclined manner, introducing a vertical component to the bracket's structure. This inclined extension adds dimensional complexity to the bracket design but enables the battery unit to utilize both horizontal and vertical movement, thereby increasing the overall movement stroke without requiring a proportionally larger horizontal space.
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
The proposed vehicle base structure significantly lengthens the movement stroke of the battery unit in a broadside collision, enhancing its displacement and energy absorption capabilities compared to traditional designs.
Implementation Method 1
inertia force acts on the battery unit toward the collision side
Implementation Method 2
moment centered on the connecting portion of the first wall portion and the second wall portion is generated
Data Source
AI summary
A vehicle base structure includes first and second structural members extending along a vehicle front-rear direction and disposed respectively at first and second sides of a vehicle base in a vehicle width direction, a battery unit disposed between the first and second structural members, and a bracket including a first wall portion fixed to a lower surface of one of the first and second structural members, a second wall portion extending inward in the vehicle width direction from an inner end portion of the first wall portion and inclined downward in a vehicle-height direction from the inner end portion of the first wall portion, and a third wall portion extending inward in the vehicle width direction from an inner end portion of the second wall portion inward in the vehicle width direction and being fixed to a lower surface of a battery case.