Vehicle Front-Part Structure That Deflects Suspension Away From Battery
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Solution Overview
Problem
In electric vehicles, the suspension member can collide with the battery unit during a frontal collision, causing damage due to its positioning under the floor, and existing solutions do not effectively prevent this collision.
Innovation Solution
A vehicle front-part structure is designed with inclined extension members on the floor, battery unit, and suspension member, where the member-side extension member collides with the floor-side extension member first, then the battery-side extension member, guiding the suspension member downward and rearward to avoid collision with the battery unit, utilizing inclined surfaces to absorb impact without damaging components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the battery unit is mounted under the floor to improve space utilization, then the vehicle can accommodate the battery unit in the engine compartment, but the suspension member may collide with the battery unit during frontal collision causing damage
Solution Approach 1:
The floor structure is segmented into multiple parts: the floor panel, floor-side extension member, and battery-side extension member. These segmented components create a stepped structure with inclined surfaces that guide the suspension member downward and rearward during collision, preventing direct contact with the battery unit while maintaining space utilization.
Solution Approach 2:
The floor-side extension member and battery-side extension member act as intermediary elements between the suspension member and the battery unit. During frontal collision, these extension members with inclined surfaces guide the suspension member's movement path downward and rearward, serving as a protective mechanism that prevents direct collision between the suspension member and battery unit.
2Ease of operation
If the suspension member is positioned in front of the battery unit under the floor, then the suspension system can be properly configured, but the suspension member directly collides with the battery unit during frontal collision
Solution Approach 1:
The floor-side extension member and battery-side extension member are pre-configured with inclined surfaces in a specific geometric arrangement before collision occurs. This preliminary structural configuration ensures that during frontal collision, the suspension member automatically follows a guided path downward and rearward along these inclined surfaces, preventing direct impact on the battery unit without requiring active control systems.
Solution Approach 2:
The extension members create a three-dimensional stepped structure with inclined surfaces that redirect the suspension member's movement from a horizontal collision path into a downward and rearward trajectory. This dimensional redirection transforms the collision dynamics, guiding the suspension member along a controlled path that avoids the battery unit while maintaining proper suspension system configuration.
3Object-affected harmful factors
If extension members with inclined surfaces are added to guide the suspension member, then collision protection is improved, but the structural complexity of the floor and battery unit increases
Solution Approach 1:
The floor-side extension member is integrated with the floor panel structure, and the battery-side extension member is integrated with the battery unit housing. By merging these protective extension members with existing structural components, the design achieves collision protection functionality without adding completely separate protective devices, thereby reducing overall structural complexity while still providing effective guidance of the suspension member during collision.
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 effectively prevents collisions between the suspension member and the battery unit during a frontal collision by guiding the suspension member downward and rearward, thereby avoiding damage to the battery unit and allowing for impact absorption without compromising component integrity.
Implementation Method 1
the opposing surface of the member-side extension member being configured to collide with the opposing surface of the floor side extension so as to guide the suspension member downward
Implementation Method 2
utilizing inclined surfaces to absorb impact without damaging components
Data Source
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AI summary
A battery unit (18) is positioned under the floor of a vehicle chamber (22). A battery-side extension (50) is provided on the lower surface of the front part of the battery unit (18) case. A member-side extension member (34) is provided, on the rear part of a suspension member (16), at a position facing the battery-side extension (50) in the vehicle front-and-rear direction.