Profiled Shielding Plate With Support Beads for Compact Power Modules
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Solution Overview
Problem
Existing power electronics modules for motor vehicles face challenges in securely and space-savingly arranging interference signal-emitting and sensitive components while effectively shielding the sensitive components from interference signals.
Innovation Solution
The assembly includes a first interference signal-emitting component with an electrically insulating layer, a second interference signal-sensitive component, and a profiled shielding plate positioned between them. The shielding plate, with raised and depressed areas, provides mechanical support and secure fastening for the sensitive component while being electrically insulated from the emitting component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional shielding plates are used to shield sensitive components from interference signals, then electromagnetic shielding effectiveness is improved, but device complexity and space requirements increase due to the need for additional supporting structures
Solution Approach 1:
The patent combines the shielding plate with supporting ribs into a single integrated component. The shielding plate includes raised areas with beads that serve dual purposes: providing electromagnetic shielding and acting as support structures for mounting sensitive components. This eliminates the need for separate supporting structures, reducing assembly complexity while maintaining shielding effectiveness.
Solution Approach 2:
The shielding plate is designed to perform multiple functions simultaneously: electromagnetic shielding, mechanical support, and component mounting. The raised beads on the shielding plate provide both shielding coverage and structural support surfaces, allowing sensitive components to be mounted directly on the shielding plate without additional support elements.
2Stability of the object's composition
If additional supporting structures are added to mount sensitive components on shielding plates, then mechanical support stability is improved, but space efficiency deteriorates due to increased component footprint
Solution Approach 1:
The supporting ribs and mounting structures are integrated into the shielding plate itself. The raised beads form both the shielding barrier and the mounting surfaces, eliminating the need for separate support structures and reducing the overall assembly footprint while maintaining mechanical stability.
Solution Approach 2:
The shielding plate utilizes vertical dimension with raised and depressed areas to create mounting surfaces. By forming beads that rise from the plate surface, the design provides mechanical support in the vertical direction without increasing the horizontal footprint, allowing components to be mounted on the elevated surfaces.
3Reliability
If multiple separate components are used for shielding and support functions, then functional reliability is improved, but manufacturing cost increases due to higher component quantity
Solution Approach 1:
The shielding plate and supporting structures are manufactured as a single integrated component, reducing the total part count from multiple separate pieces to one. This integration maintains all necessary functions (shielding and support) while simplifying manufacturing processes, reducing assembly steps, and lowering overall production costs.
Solution Approach 2:
The single shielding plate component performs multiple functions that would traditionally require separate parts: electromagnetic shielding, mechanical support, and component mounting. This multi-functionality reduces the number of components needed, simplifying manufacturing and assembly while maintaining system reliability.
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 arrangement allows for a cost-effective, component-saving, and space-saving configuration that effectively shields sensitive components from interference signals, ensuring stable operation while minimizing additional supports and maximizing space efficiency.
Implementation Method 1
a shielding plate, arranged between the first and the second component, for shielding the second component from the interference signals of the first component
Data Source
AI summary
An assembly for a power electronics module of a motor vehicle, includes: a first component with at least one first, interference signal-emitting electrical component and an electrically insulating layer that covers the at least one first component; a second, interference signal-sensitive component; a shielding plate that is arranged between the first component and the second component for shielding the second component from the interference signals of the first component and is designed as a profiled plate with a raised region having at least one raised bead and with a recessed region having at least one recessed bead. The at least one recessed bead is mechanically connected to the electrically insulating layer of the first component in order to mechanically connect the shielding plate to the first component. The at least one raised bead forms a supporting region for the second component. The second component bears against and is fastened to the supporting region at least in certain areas.