Motor Vehicle Control Device Segmented Foil Conductor Sealing
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Solution Overview
Problem
The integration of control devices into motor vehicle gearboxes requires a compact, thermally and mechanically resilient design that is oil-tight, but existing solutions with flexible printed circuit boards are wasteful and inflexible, leading to material inefficiencies and difficulties in repositioning components.
Innovation Solution
A control device design featuring a base plate and housing lid with an interconnect device and flexible foil conductor strips that allow for a compact, oil-tight electrical connection to external components, with the foil conductor strips being adaptable and reducing material waste by being separate strips rather than a single piece, and an additional lid plate for enhanced sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-piece flexible printed circuit board is used to connect electronic components, then electrical connection is achieved, but material waste increases and component repositioning becomes difficult
Solution Approach 1:
The flexible printed circuit board is divided into multiple separate foil conductor strips instead of using a single large piece. Each foil conductor strip connects specific electronic components, allowing for precise material usage without waste and enabling independent repositioning of individual strips without affecting the entire circuit board.
2Reliability
If a single-piece flexible printed circuit board is used, then electrical connection is achieved, but adaptability for component repositioning is reduced
Solution Approach 1:
The circuit board is segmented into multiple independent foil conductor strips, each capable of being repositioned separately. This segmentation provides adaptability for component repositioning while maintaining reliable electrical connections through each individual strip.
3Volume of moving object
If a compact control device design is implemented, then space efficiency improves, but manufacturing complexity increases
Solution Approach 1:
The control device uses segmented foil conductor strips that can be independently manufactured and then assembled into the compact housing. This approach allows for simplified manufacturing of individual components while achieving a compact overall device volume through precise assembly of the segmented elements.
Data Source
AI summary
For a motor vehicle control device, a housing lid and a base plate form a hollow area that contains an interconnect device arranged on the inner side of the housing lid. The housing lid has at least one opening surrounding the interconnect device, adjacent to an electronic component and/or an electrical contact area on the interconnect device. On or in the opening, a flexible foil conductor strip is arranged with an end section thereof covering the opening. A lid plate covers the opening completely, and the interposed foil conductor strip is thus connected in an oil-tight manner with the housing lid. Electrical connection lines between the components and/or the contact areas on the interconnect device and an electrical contact area on the end section of the foil conductor strip create the electrical connection between the control electronics on the interconnect device and the surrounding area outside of the control device.