Shared EMC Filter Layout for Compact Vehicle High-Voltage Power Supply
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Solution Overview
Problem
Existing electrical high-voltage on-board power supplies for vehicles lack a standardized and simplified structure, leading to redundant components with separate EMC filters and intermediate circuits for each component, resulting in larger and more complex systems.
Innovation Solution
A shared EMC filter and intermediate circuit are provided for multiple electrical components, housed together in a single unit, allowing components like power electronics, rectifiers, and DC/DC converters to share these functionalities, eliminating the need for individual EMC filters and intermediate circuits, and enabling a compact, universal design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate EMC filters and intermediate circuits are provided for each electrical component, then each component can operate independently with its own protection, but the overall system becomes larger and more complex
Solution Approach 1:
The patent combines multiple electrical components (power electronics, rectifier, DC/DC converter) along with their respective EMC filters and intermediate circuits into a single integrated housing. This merging approach maintains the functional independence and protection of each component while eliminating the complexity of separate installations, directly resolving the contradiction between reliability and device complexity
Solution Approach 2:
The shared housing serves multiple functions simultaneously: it provides mechanical protection, electrical isolation, EMC filtering, and thermal management for all electrical components. This multi-functionality allows the system to maintain component independence without requiring separate protective structures, thereby reducing overall system complexity
2Reliability
If separate EMC filters and intermediate circuits are provided for each electrical component, then each component has dedicated filtering and circuitry, but the system size increases
Solution Approach 1:
By merging multiple electrical components and their associated EMC filters and intermediate circuits into a single shared housing, the patent significantly reduces the total volume occupied by these components. The shared infrastructure eliminates redundant protective structures and allows for optimized spatial arrangement, maintaining dedicated filtering and circuitry for each component while minimizing overall system volume
3Device complexity
If a shared housing is used for multiple electrical components with shared EMC filter and intermediate circuit, then the system becomes more compact and standardized, but the components share common infrastructure
Solution Approach 1:
The shared housing is designed with universal characteristics that allow it to accommodate different electrical components (power electronics, rectifier, DC/DC converter) while maintaining standardized mounting and connection interfaces. This universality enables the system to be adapted to different vehicle types and configurations, preserving adaptability while achieving structural simplification and standardization
Data Source
AI summary
A component arrangement for an electric high-voltage on-board power supply of a vehicle includes a shared EMC filter, a shared intermediate circuit, a plurality of electrical components, and a shared housing. The shared EMC filter and the shared intermediate circuit are provided for the plurality of electrical components. The plurality of electrical components are disposed in the shared housing together with the shared EMC filter and the shared intermediate circuit. The plurality of electrical components are interconnected in parallel with the shared intermediate circuit and the shared EMC filter and there is otherwise no electrical connection between them.