Integrated Motor-Control Unit With Separate Heat Dissipation Paths
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Solution Overview
Problem
Conventional inverter-integrated BLDC motors face challenges in efficiently cooling the heat generated from both the motor and control units, as the heat transfer from the inverter unit to the motor unit is not effectively managed, leading to inefficient cooling.
Innovation Solution
The motor and control units are designed with separate heat radiation mechanisms, where the motor unit radiates heat through its housing and the control unit radiates heat via a heat sink, allowing for efficient cooling by isolating and managing heat transfer from each unit independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the inverter unit and motor unit are formed integrally with heat transfer from inverter to motor, then the configuration is compact, but the cooling efficiency of the inverter unit deteriorates
Solution Approach 1:
The patent divides the integrated motor into two thermally independent sections: the motor unit with its own heat radiation structure and the inverter unit with a separate heat dissipation path through the control unit housing. This segmentation allows each unit to manage its heat independently, preventing the inverter's heat from being transferred to the motor, thus resolving the cooling efficiency issue while maintaining compact integration.
2Device complexity
If heat from the inverter unit is transferred to the motor unit for radiation, then the structure is simplified, but the heat radiation efficiency of the inverter unit deteriorates
Solution Approach 1:
The patent extracts the heat dissipation function of the inverter unit by providing a dedicated heat radiation path through the control unit housing with its own heat radiating fins. This separates the heat radiation function from the motor unit, allowing the inverter to radiate heat independently through the control unit's external surface, thereby improving heat radiation efficiency without significantly increasing structural complexity.
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 configuration enables effective cooling of both the motor and control units, improving the overall thermal management and performance of the integrated motor system.
Implementation Method 1
heat generated from the control unit including a printed circuit board (PCB) to be radiated from the control unit
Implementation Method 2
heat generated from the motor unit to be radiated from the motor unit
Implementation Method 3
the second contact portion and the heat sink being connected to each other by a connecting portion
Data Source
AI summary
A motor integrated with a control unit having an efficiency in cooling by allowing the heat generated by the motor to be radiated away from the motor. Heat generated from the control unit is separately radiated away from the control unit. The motor integrated with the control unit can be utilized in water pumps.