Front E-Drive Layout With Collision-Blocking Protrusions
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Solution Overview
Problem
In electrified vehicles with an integrated electromechanical unit in the front, a frontal collision can cause the unit to move rearward and potentially contact the battery pack, leading to potential damage.
Innovation Solution
The integrated electromechanical unit is positioned within the front compartment, separated from the vehicle cabin by a dash panel, with protrusions on the unit and framework member surfaces to minimize contact with the battery pack during a collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the integrated electromechanical unit is disposed in the front compartment, then the vehicle layout is optimized and space utilization is improved, but the risk of contact with the battery pack during frontal collision increases
Solution Approach 1:
The protrusion is designed in advance on the integrated electromechanical unit to make contact with the framework member before the unit can reach the battery pack during a collision. This preliminary contact point is strategically positioned to stop the rearward movement of the electromechanical unit, preventing harmful contact with the battery pack while maintaining the optimized front compartment layout.
2Volume of moving object
If the distance between the integrated electromechanical unit and the battery pack is reduced to improve space utilization, then vehicle packaging is optimized, but the safety margin during collision is reduced
Solution Approach 1:
The framework member acts as an intermediary element between the integrated electromechanical unit and the battery pack. The protrusion on the electromechanical unit contacts this intermediary structure first during collision, which then absorbs and redirects the impact force, preventing direct contact between the electromechanical unit and the battery pack even when spacing is minimized for optimal vehicle packaging.
Data Source
AI summary
An electrified vehicle includes an integrated electromechanical unit and a dash panel. The dash panel is supported by a framework member. The framework member is provided below the dash panel, and is located rearward of the integrated electromechanical unit in the vehicle front-rear direction. The battery pack is disposed rearward of a front end of the framework member in the vehicle front-rear direction. A surface of the integrated electromechanical unit that faces the framework member includes a first protrusion protruding in the vehicle length direction. A surface of the framework member that faces the integrated electromechanical unit includes a second protrusion protruding in the vehicle length direction. The distance between these surfaces is smaller than the distance between the surface of the integrated electromechanical unit that faces the framework member and the front end of the battery pack in the vehicle length direction.