Bracket Deformation for Fuel Cell Vehicle Collision Safety
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Solution Overview
Problem
Conventional fuel cell vehicles face the risk of dash panel deformation during collisions due to the movement of auxiliary machines like the air compressor, which can sandwich rearward components between the compressor and the dash panel, leading to potential damage.
Innovation Solution
A fuel cell vehicle design featuring a supporting frame, an air compressor positioned below the frame, a bracket to secure the compressor, and a rearward component, where the bracket's deformation-resistant strength is set to absorb collision loads, preventing the air compressor and rearward components from being sandwiched between the dash panel and the compressor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the air compressor is disposed below the supporting frame, then the fuel cell can be positioned more on the forward side, but the compressor may move rearward during collision causing dash panel deformation
Solution Approach 1:
The bracket is designed with deformation-resistant strength that is intentionally set to be overwhelmed by collision input loads, allowing it to deform as a cushioning mechanism. This beforehand cushioning design absorbs collision energy through controlled bracket deformation, preventing the air compressor from moving rearward and causing dash panel deformation.
Solution Approach 2:
The bracket's deformation-resistant strength parameter is specifically designed to be lower than the expected collision input load. This parameter change allows the bracket to transition from a rigid support structure to a deformable energy-absorbing element during collision, resolving the contradiction between maintaining compressor position and preventing dash panel damage.
2Strength
If the bracket has high deformation resistant strength, then the air compressor is securely fixed, but the bracket may not deform to absorb collision loads
Solution Approach 1:
The bracket's deformation-resistant strength parameter is deliberately set to a specific value that is lower than the expected collision input load. This parameter optimization allows the bracket to maintain sufficient strength for normal operation while enabling controlled deformation during collision to absorb energy, thus resolving the contradiction between secure fixation and collision energy absorption.
Data Source
AI summary
A bracket has deformation resistant strength set to be overwhelmed by an input load applied to the bracket from a rearward side toward a forward side when a fuel cell vehicle collides with an object.