In-Vehicle Inverter Layout Against Side Member Collision Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In-vehicle inverters are at risk of dielectric breakdown due to interference with side members during vehicle collisions, as the deformable side members can interfere with the inverter, causing short circuits.
Innovation Solution
The in-vehicle structure includes a side member with low and high rigidity portions in the front-rear direction, where the inverter's high-voltage terminal connections are positioned to avoid overlap with the low rigidity portion, ensuring they overlap with the high rigidity portion, thus preventing interference and dielectric breakdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the inverter is arranged near the side member to save space, then the space utilization is improved, but the inverter is at risk of dielectric breakdown due to interference with the deformed side member during collision
Solution Approach 1:
The side member is designed with different rigidity characteristics at different locations: a low rigidity portion for energy absorption during collision and a high rigidity portion for maintaining structural integrity. The inverter is positioned to overlap with the high rigidity portion, ensuring that the critical high-voltage terminal connection portion remains protected from deformation-induced interference while the low rigidity portion deforms to absorb collision energy.
2Loss of energy
If the side member has low rigidity to attenuate collision energy through deformation, then the collision energy absorption is improved, but the deformed side member interferes with the inverter causing dielectric breakdown
Solution Approach 1:
The side member is segmented into functionally distinct portions along the vehicle width direction: a low rigidity portion that deforms to absorb collision energy and a high rigidity portion that maintains structural stability. This segmentation allows different regions of the side member to perform different functions simultaneously, enabling energy absorption without compromising the protection of the inverter.
Solution Approach 2:
The problem is solved by introducing a spatial dimension consideration - the inverter's position in the vehicle width direction is specifically designed to overlap with the high rigidity portion of the side member. This dimensional positioning ensures that the inverter is located in a region that does not undergo harmful deformation during collision, thereby avoiding interference while allowing the low rigidity portion to perform its energy absorption function.
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 configuration effectively prevents dielectric breakdown of the inverter during collisions by ensuring the high-voltage terminal connections do not interfere with the deformable side member, maintaining insulation and safety.
Implementation Method 1
The side member has a low rigidity portion, and attenuates energy by deformation at the time of a vehicle collision
Data Source
AI summary
The in-vehicle structure of an inverter includes an inverter and a side member. The inverter has a first high-voltage bus bar whose position in the front-rear direction of the vehicle does not overlap with a low rigidity portion and overlaps with a high rigidity portion.