Power Conversion Device Mounting Structure for Vehicle Impact Load Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The motor case in existing vehicle designs is prone to rotating and moving downward in frontal collisions, increasing the load inputted into the power control unit case, which poses a risk during such impacts.
Innovation Solution
A mounting structure for a power conversion device is designed with a mounting component on a vehicle body component, where the power conversion device is arranged between the front and rear ends of a drive unit, utilizing a vibration damper and stiffer mounting components to absorb and distribute impact loads effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor case is arranged tilted downward toward the lower front side to optimize space utilization, then the space efficiency is improved, but the load on the power control unit case increases during frontal collision
Solution Approach 1:
The patent positions the power conversion device in the width direction (lateral dimension) between the front and rear ends of the drive unit, rather than only arranging components in the front-rear direction. This dimensional change allows the device to be placed in a previously underutilized spatial zone, optimizing space utilization while the mounting component provides structural support to reduce impact load during collisions
2Length of moving object
If the power conversion device is positioned closer to the front end to reduce overall vehicle length, then the vehicle length is reduced, but the device becomes more vulnerable to impact loads during frontal collision
Solution Approach 1:
The mounting component serves as an intermediary structure between the power conversion device and the drive unit. It provides mechanical support and load distribution, allowing the device to be positioned optimally for compactness while the mounting component absorbs and distributes impact forces during frontal collision, protecting the device from excessive load
Data Source
AI summary
A mounting structure for a power conversion device includes: a vehicle body component extending in a front-rear direction of a vehicle; a mounting component provided on the vehicle body component; a drive unit held by the vehicle body component via the mounting component; and a power conversion device attached to the mounting component. A stiffness of the mounting component is greater than a stiffness of the vehicle body component. The power conversion device is arranged between a front end and a rear end of the drive unit in a side view of the vehicle.