Terminal Block Coolant Channel for Compact Motor Inverter Cooling
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Solution Overview
Problem
In motor devices, the proximity of the inverter to the motor leads to heat transfer, causing significant temperature increases in the inverter, which complicates effective cooling.
Innovation Solution
A cooling system is integrated with a terminal block channel that guides a coolant, allowing for efficient heat dissipation through a circuit involving a reservoir tank, cooling pump, radiator, and water jackets, both in the inverter and terminal block, to reduce inverter temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the inverter is disposed near the motor to integrate the motor device, then the device compactness is improved, but the inverter temperature increases due to heat transfer from the motor
Solution Approach 1:
The cooling system is segmented into multiple independent cooling circuits: a first cooling circuit with a first water jacket for cooling the inverter, and a second cooling circuit with a second water jacket for cooling the terminal block. This segmentation allows independent temperature control for each component, preventing heat transfer from the motor from overheating the inverter while maintaining compact integration.
Solution Approach 2:
Coolant serves as an intermediary substance that absorbs heat from the inverter and terminal block and transports it to cooling locations outside the integrated motor-inverter assembly. The coolant circulates through dedicated water jackets, acting as a thermal mediator that enables heat removal without requiring physical separation between the motor and inverter.
2Temperature
If a cooling system is added to reduce inverter temperature, then the inverter temperature is reduced, but the device complexity increases
Solution Approach 1:
The cooling functions for the inverter and terminal block are merged into a single integrated cooling system that uses a common coolant circulation mechanism. The first and second water jackets are part of the same cooling structure, allowing simultaneous cooling of both components through coordinated coolant flow, thereby reducing overall system complexity compared to separate cooling systems.
Solution Approach 2:
The coolant circulation system performs multiple functions: it cools the inverter through the first water jacket, cools the terminal block through the second water jacket, and can be extended to cool the motor through third water jackets. This multi-functional cooling system reduces the need for separate cooling mechanisms for each component, simplifying the overall device architecture.
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 effectively reduces inverter temperature by circulating coolant through both the inverter and terminal block, mitigating heat transfer from the motor and enhancing cooling efficiency.
Implementation Method 1
a terminal block channel that guides a coolant... effectively reduces inverter temperature by circulating coolant through both the inverter and terminal block
Implementation Method 2
cooling system is integrated with a terminal block channel that guides a coolant, allowing for efficient heat dissipation through a circuit involving a reservoir tank, cooling pump, radiator
Implementation Method 3
efficient heat dissipation through a circuit involving a reservoir tank, cooling pump, radiator
Data Source
AI summary
A motor device includes a motor case, an inverter case, a motor, an inverter, and a terminal block. The inverter case is attached to the motor case. The motor is disposed in the motor case. The inverter is disposed in the inverter case. The terminal block is disposed in the inverter case and has a terminal block channel. The terminal block is coupled to an energizing member that extends from the motor. The terminal block channel is configured to guide a coolant.