Electric Vehicle High-Voltage Unit Collision Protection
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Solution Overview
Problem
Conventional electric vehicle designs fail to adequately prevent damage to high-voltage units from colliding with each other during impacts, as proposed structures do not effectively manage various collision scenarios.
Innovation Solution
The electric vehicle design incorporates high-voltage units with distinct strength portions, where higher strength components are positioned closer together than lower strength components, allowing higher strength portions to absorb contact forces first and minimizing damage, while maintaining a compact size by allowing acceptable contact between these units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional structures are used to prevent high voltage units from hitting each other, then protection against collision damage is improved, but the vehicle size increases and compactness is reduced
Solution Approach 1:
The patent applies local quality by differentiating the strength characteristics of different parts of the high voltage units. Specifically, the lower sides of the units are designed with higher strength to withstand collision impacts, while other portions maintain standard strength. This localized strengthening allows the units to be positioned closer together without compromising overall protection, thereby reducing vehicle size while maintaining collision resistance.
2Volume of moving object
If high voltage units are positioned closer together to minimize vehicle size, then compactness is improved, but the risk of damage from unit-to-unit contact during collision increases
Solution Approach 1:
The patent implements preliminary action by pre-positioning the higher strength portions at the lower sides of the high voltage units before any collision occurs. This advance preparation ensures that when a collision happens, the strengthened portions are already in place to absorb and distribute the impact forces, preventing damage to the units even when they are closely spaced.
3Strength
If higher strength portions are designed with increased wall thickness, then collision resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by implementing increased wall thickness only in the lower portions of the high voltage unit casings where collision impacts are most likely to occur. The upper and side portions maintain standard wall thickness. This selective thickening approach achieves the required collision resistance while minimizing the additional manufacturing complexity compared to uniformly thickening the entire casing.
Data Source
AI summary
An electric vehicle includes a fuel cell unit and a power controller unit that are disposed next to each other in a front compartment. Each of the fuel cell unit and the power controller unit includes an upper casing having a lower strength and a lower casing having a strength greater than that of the upper casing. The fuel cell unit and the power controller unit are arranged so that a distance La between the lower casings along an alignment axis is shorter than a distance Lb between the upper casings along the alignment axis.