Electric Machine Housing With Peripheral Cooling and Damping
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Solution Overview
Problem
Existing housing designs for electric machines in vehicle electronics face challenges in effectively dissipating heat from support plates populated with transistors while maintaining a compact and space-saving arrangement, and ensuring vibration damping and electrical insulation.
Innovation Solution
A housing design featuring a cooling device arranged on the periphery of a support plate that contacts a heat-conducting ring connected to the housing, providing effective heat dissipation through the housing's circumferential surface, while also serving as a vibration-damping and electrically insulating mechanism, with a press-on ring acting as a spring and seal to eliminate separate mounting and sealing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling device is arranged on the periphery of the support plate, then heat dissipation area is increased and space utilization is improved, but the complexity of thermal management increases
Solution Approach 1:
The cooling device is merged with the housing structure, where the housing itself serves as a heat sink with integrated cooling channels. This combines the housing's structural function with thermal management function, increasing heat dissipation area without adding separate cooling components.
Solution Approach 2:
The housing is designed to perform multiple functions simultaneously: structural support, vibration damping, electrical insulation, and heat dissipation. The peripheral cooling channels in the housing serve both structural and thermal management purposes, reducing overall device complexity.
2Reliability
If vibration damping and electrical insulation are implemented, then component protection is improved, but the number of components increases
Solution Approach 1:
The housing material is selected to provide both vibration damping and electrical insulation properties simultaneously. This single component performs multiple protective functions, eliminating the need for separate vibration damping mounts and electrical insulators.
Solution Approach 2:
The functions of vibration damping and electrical insulation are merged into the housing structure itself. The housing acts as both the mounting structure and the protective barrier, reducing the total component count while maintaining reliability.
3Volume of moving object
If a compact arrangement is achieved, then space utilization is improved, but heat dissipation efficiency may be reduced
Solution Approach 1:
Heat dissipation is extended into the third dimension by incorporating cooling channels within the housing volume. The peripheral cooling channels utilize the housing's thickness dimension, allowing effective heat dissipation without increasing the device's external footprint.
Solution Approach 2:
The cooling channels are merged into the housing structure, utilizing the existing material volume for heat dissipation. This eliminates the need for separate heat sinks or cooling fins that would increase device volume, maintaining compactness while achieving effective heat dissipation.
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 achieves efficient heat dissipation, vibration damping, and electrical insulation, resulting in a compact and space-saving arrangement that enhances electromagnetic compatibility and reduces the number of components needed, suitable for automotive applications.
Implementation Method 1
the cooling device contacts a heat-conducting ring connected with the housing, and in which the support plate and components arranged thereon are vibration damped and electrically insulated
Implementation Method 2
Heat that arises is dissipated via this housing lid from the elements producing power loss to a surrounding environment
Implementation Method 3
The contact between the cooling device and a heat-conducting ring connected with the housing brings about heat dissipation from the support plate along the heat-conducting ring via the housing to a surrounding environment
Implementation Method 4
the support plate and components arranged thereon are vibration damped and electrically insulated
Implementation Method 5
the support plate and components arranged thereon are vibration damped and electrically insulated
Data Source
AI summary
A housing for an electric machine includes a cooling device arranged on the periphery of a support plate, the cooling device contacts a heat-conducting ring connected to the housing, and the support plate as well as components arranged thereon have vibration damping and an electric insulation to provide advantageous structural conditions such that an advantageous cooling effect is achieved, and regions within the cooling device can be provided for fitting elements of the support plate.