Electric Pump Cooling Passage for Electronic Control Unit
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Solution Overview
Problem
Conventional electrically driven pumps face issues with heat dissipation from the electronic control unit, which can negatively impact performance and service life due to its isolation from the working medium.
Innovation Solution
Incorporating a cooling passage within the pump that allows the working medium to exchange heat with the electronic control unit, utilizing a pressure difference to facilitate heat removal, thereby enhancing the service life of both the electronic control unit and the pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic control unit is isolated from the working medium to avoid liquid leakage, then the reliability is improved, but the heat dissipation performance deteriorates
Solution Approach 1:
The pump housing is segmented into a first housing and a second housing that are detachably connected, allowing the electronic control unit to be isolated in the first housing while providing separate cooling passages in the second housing that communicate with the impeller chamber. This segmentation enables electrical isolation from liquid while maintaining thermal management through dedicated cooling channels.
Solution Approach 2:
Cooling passages act as an intermediary thermal conduction path between the electronic control unit and the working medium. These passages allow heat to be transferred from the isolated electronic components to the cooling fluid in the impeller chamber without direct contact between the electronic control unit and the working medium, thus maintaining both reliability and heat dissipation performance.
2Reliability
If the electronic control unit is placed away from the working medium to prevent liquid damage, then the reliability is improved, but the service life deteriorates due to heat accumulation
Solution Approach 1:
The pump housing is segmented into a first housing and a second housing that are detachably connected, allowing the electronic control unit to be isolated in the first housing while providing separate cooling passages in the second housing that communicate with the impeller chamber. This segmentation enables electrical isolation from liquid while maintaining thermal management through dedicated cooling channels.
Solution Approach 2:
Cooling passages act as an intermediary thermal conduction path between the electronic control unit and the working medium. These passages allow heat to be transferred from the isolated electronic components to the cooling fluid in the impeller chamber without direct contact between the electronic control unit and the working medium, thus maintaining both reliability and heat dissipation performance.
3Duration of action of stationary object
If a cooling passage is introduced to improve heat dissipation, then the service life is improved, but the device complexity increases
Solution Approach 1:
The cooling passages are integrated into the existing pump housing structure, merging the cooling function with the housing design. The first and second housings are detachably connected to form the pump body, with cooling passages formed within this structure, eliminating the need for separate cooling components and reducing overall device complexity.
Solution Approach 2:
The pump housing serves multiple functions: it provides structural support, isolates the electronic control unit from the working medium, and incorporates cooling passages for thermal management. This multi-functionality reduces the need for additional dedicated cooling components, thereby limiting the increase in device complexity while achieving improved heat dissipation and extended service life.
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 cooling passage effectively reduces the temperature of the electronic control unit, leading to improved performance and extended service life of the electrically driven pump by efficiently dissipating heat generated during operation.
Implementation Method 1
the working medium in the cooling passage exchanges heat with the electronic control unit
Implementation Method 2
the working medium in the cooling passage has a certain pressure difference, such that the working medium may flow in the cooling passage, which facilitates taking away the heat generated by the electronic control unit
Data Source
AI summary
An electrically driven pump includes a first housing and a second housing, and the first housing and the second housing are fixed to form an impeller chamber for receiving an impeller. The second housing and a rear housing are fixed to form a first receiving chamber for receiving a motor assembly; and the motor assembly includes a stator and a rotor, the rotor is arranged in an inner cavity enclosed by the stator, and the rotor drives the impeller to rotate. An electronic control unit is cooperated with the motor assembly, and the electronic control unit controls the operation of the motor assembly. The electrically driven pump includes a cooling passage for accommodating a working medium, and the working medium in the cooling passage may exchange heat with the electronic control unit, thereby facilitating improving the service life of the electrically driven pump.