Motor Housing With Integrated Heat Exchange for Compact Cooling
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Solution Overview
Problem
Conventional methods for cooling motors, such as attaching a PCB to a housing via thermal pads, are insufficient for managing increasing heat generation, leading to impaired function or thermal damage.
Innovation Solution
A motor housing design with integrated internal heat exchange and heat dissipation units, featuring heat dissipation blades and fins that maximize contact area and fluid flow rate, enhancing heat exchange with external cooling fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If simple contact-based heat dissipation method (thermal pads) is used, then the structure is simple, but heat dissipation efficiency is insufficient
Solution Approach 1:
The heat dissipation unit is segmented into multiple functional components: heat dissipation blades extending in the flow direction, heat dissipation fins protruding in radial directions, and stepped surfaces at different heights. This segmentation creates multiple heat exchange surfaces and flow paths, significantly improving heat dissipation efficiency while maintaining manufacturing feasibility through modular design
Solution Approach 2:
The invention transitions from simple planar thermal pad contact to three-dimensional heat dissipation structures with blades extending in the flow direction and fins protruding radially. The stepped surfaces create multiple vertical levels for heat exchange, utilizing spatial dimensions to maximize heat dissipation area without substantially increasing housing volume
2Loss of energy
If heat dissipation structures are added to maximize heat exchange, then heat dissipation efficiency improves, but housing volume increases
Solution Approach 1:
The heat dissipation blades and fins are integrated within the existing housing structure, with blades extending from the housing surface and fins protruding radially from internal surfaces. The stepped surfaces are formed by recessing portions of the housing, creating nested configurations that maximize heat exchange area without substantially increasing external housing dimensions
Solution Approach 2:
Heat dissipation surfaces are extended into the flow direction and radial directions, utilizing three-dimensional space efficiently. The stepped surfaces create multiple vertical levels for heat exchange, maximizing heat dissipation area within the existing housing volume envelope
3Loss of energy
If cooling fluid flow rate is increased for better heat dissipation, then heat exchange efficiency improves, but fluid flow control complexity increases
Solution Approach 1:
The stepped surfaces and blade configurations are designed to dynamically interact with the cooling fluid flow, creating turbulence and enhancing heat exchange efficiency passively. The rounded ends of blades and inclined portions of steps guide fluid flow naturally, improving heat dissipation without requiring active flow control mechanisms
Solution Approach 2:
The heat dissipation structure itself serves to enhance fluid flow and heat exchange. The stepped surfaces and blade geometries automatically create turbulence and extend fluid contact time, with the structure performing its own flow conditioning function without external control systems
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
The design achieves high heat dissipation performance by maximizing contact area and fluid flow rate without increasing the housing's overall size, effectively managing heat accumulation.
Implementation Method 1
heat dissipation blades extending in a flow direction of the cooling fluid
Implementation Method 2
heat dissipation unit in contact with the heat exchange unit inside the housing and in contact with the cooling fluid outside the housing
Implementation Method 3
the heat dissipation blades may include rounded ends at a point where contact with the cooling fluid begins
Implementation Method 4
an internal heat exchange unit integrated inside the housing and in direct or indirect contact with the motor or the substrate
Data Source
AI summary
The present invention relates to a housing capable of more effectively dissipating heat generated by a motor, the housing is in contact with a cooling fluid from the outside and may include a motor integrated inside the housing, a substrate integrated inside the housing, an internal heat exchange unit integrated inside the housing and in direct or indirect contact with the motor or the substrate, and a heat dissipation unit in contact with the heat exchange unit inside the housing and in contact with the cooling fluid outside the housing.