Trough-Shaped Controller Housing for Heat Dissipation
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Solution Overview
Problem
Current transmission control module housings face challenges in heat dissipation and mechanical stress due to high temperature fluctuations and aggressive transmission fluid, requiring effective heat conduction and mechanical fixation while maintaining electrical connectivity and hermetic sealing.
Innovation Solution
A trough-shaped control unit housing with a metal base and cover, where contact pins are glazed directly into the base, allowing for excellent flatness, reduced mechanical stress, and efficient heat dissipation, along with a modular design for various applications, using metal and glass materials with welding for a robust and cost-effective construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass-enclosed metal pins protrude vertically from the base plate, then electrical contact is enabled, but the contact surface for heat dissipation must form a raised surface requiring increased area
Solution Approach 1:
The contact pins are arranged in a plane parallel to the base plate rather than protruding vertically, changing the spatial dimension of electrical connection. This allows the heat dissipation surface to remain flat and planar, eliminating the need for raised surfaces and reducing the required area while maintaining reliable electrical contact through the planar arrangement of pins.
2Temperature
If the metal base is placed against the aluminum housing for heat dissipation, then heat conduction is achieved, but mechanical stress and vibrations may affect electrical connections
Solution Approach 1:
The housing is divided into functionally separate components: a metal base for heat dissipation and a separate cover structure for electrical connection protection. The contact pins are enclosed in glass and mounted on the base plate, creating distinct functional zones. This segmentation allows the metal base to efficiently dissipate heat while the glass-enclosed pins and cover provide stable, protected electrical connections that are isolated from mechanical stress and vibrations.
3Object-affected harmful factors
If a hermetically sealed housing is used to protect electronics from transmission fluid, then protection is achieved, but heat dissipation becomes more difficult
Solution Approach 1:
The housing employs composite material construction combining metal (for heat dissipation), glass (for hermetic sealing), and plastic (for structural support and fluid resistance). The metal base provides thermal conduction pathways while the glass-enclosed contact pins create hermetic seals against transmission fluid. This composite approach simultaneously achieves protection from harmful fluids and efficient heat dissipation through the metal components.
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 design ensures effective heat dissipation, mechanical strain relief, and hermetic sealing, reducing production costs and enabling reliable operation across temperature extremes with minimal mechanical stress on electrical connections.
Implementation Method 1
The contact pins for electrical contacting are accommodated by glazing (38) directly in the trough-shaped basic form (24)
Implementation Method 2
the metal base of the control unit housing makes contact with the aluminum housing of the transmission hydraulics, which means that the heat loss is dissipated through heat conduction
Implementation Method 3
a cover, which is preferably made of steel, with the two metal parts mentioned, i.e. trough-shaped base and cover, being able to be bonded to one another, for example, can be welded to one another
Data Source
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AI summary
The invention relates to a controller housing, particularly for a transmission control module of a transmission of a motor vehicle. The controller housing (12) comprises a first housing part (24) and a second cover-shaped housing part (40). A circuit carrier (30) having at least one electronic component (52) is received in the first housing part (24). The first housing part (24) is configured in the shape of a basin (28), the base of which is configured as a heat dissipation surface (14) to a further housing (10).