Vehicle Air-Conditioning Unit Shielding for High-Voltage Impact Containment
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Solution Overview
Problem
Vehicle air-conditioning units with high-voltage components are at risk of exposure or dispersal during collisions, posing safety hazards to passengers and handlers due to the potential breakage or deformation of the unit's resin case, which can lead to accidental contact with energized components.
Innovation Solution
A vehicle air-conditioning unit with a protective structure composed of conductive, flexible, or rigid plate-shaped members arranged around the high-voltage components, providing a grounding circuit and absorbing impacts to prevent exposure or scattering of these components, even if the case is broken or deformed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-voltage components are stored in a resin case for the air-conditioning unit, then the components are protected during normal operation, but the case may break or deform during collision causing high-voltage components to be exposed or scattered
Solution Approach 1:
The patent implements a nested protection structure where the high-voltage components are first enclosed in a resin case, and then this entire assembly is further protected by a metal protecting structure (such as a metal tray or frame) that surrounds the resin case. This multi-layer nesting ensures that even if the outer resin case breaks during collision, the inner metal structure continues to contain the high-voltage components, preventing their exposure and scattering.
Solution Approach 2:
The patent applies beforehand cushioning by providing a metal protecting structure in advance that can absorb and distribute impact forces before they reach the resin case and high-voltage components. The metal structure acts as a sacrificial protective layer that deforms or absorbs collision energy, thereby cushioning the underlying components from direct impact and preventing case failure that would lead to component exposure.
2Volume of moving object
If the resin case is made thinner to reduce weight and space, then the air-conditioning unit becomes more compact, but the case becomes more susceptible to breakage during impact
Solution Approach 1:
The patent employs composite materials by combining the resin case with a metal protecting structure. The resin case provides electrical insulation and basic protection, while the surrounding metal structure (such as a metal tray or frame) provides enhanced mechanical strength and impact resistance. This composite construction allows the resin case to remain relatively thin for compactness while the metal layer compensates for the reduced thickness by providing the necessary impact resistance.
3Stability of the object's composition
If high-voltage components are securely fixed in the case to prevent scattering, then component stability is improved, but access for maintenance and inspection becomes more difficult
Solution Approach 1:
The patent applies segmentation by dividing the protection system into separate functional layers: the resin case that provides electrical insulation and basic containment, and the outer metal protecting structure that provides mechanical strength. This segmentation allows the high-voltage components to be securely fixed within the resin case for stability, while the modular design enables maintenance personnel to access the components by removing or opening the metal protecting structure, thus balancing stability with ease of repair.
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
The protective structure effectively prevents high-voltage components from being exposed or scattered during impacts, enhancing safety by grounding the components and absorbing impacts, thus preventing accidental contact and maintaining the integrity of the air-conditioning unit.
Implementation Method 1
the protecting structure is configured to prevent the electric instrument from scattering... even when the case has a significant impact
Implementation Method 2
the protecting structure... providing a grounding circuit
Data Source
AI summary
Preventing high-voltage components which constitute an electric instrument stored in a case from being exposed, dropping out, or scattering to an outside from the case even when the case of an air-conditioning unit has a significant impact. Therefore, a vehicle air-conditioning unit is provided with a protecting structure for preventing the electric instrument from scattering.