Hybrid EV Cooling Layout With Integrated Oil Cooler Water Passage
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Solution Overview
Problem
The existing cooling structure in hybrid electric vehicles is complex due to the need for separate water passages for cooling the first and second electrical equipment and the oil cooler, which limits the installation flexibility of the mechanical-electrical integrated unit.
Innovation Solution
The hybrid electric vehicle incorporates a simplified cooling structure by integrating the water-cooling passages for the first and second electrical equipment and the oil cooler, allowing for separate placement of the first and second electrical casings and the oil cooler within the vehicle, thereby reducing the complexity of the cooling system and increasing installation flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate water passages are provided for cooling the first electrical equipment, second electrical equipment and oil cooler, then the cooling function is ensured, but the cooling structure becomes complex
Solution Approach 1:
The patent merges the cooling functions of the first electrical equipment, second electrical equipment, and oil cooler into a single integrated water passage system. The water passage is configured to sequentially cool all three components within the mechanical-electrical integrated unit, reducing the number of separate cooling circuits while maintaining effective cooling for each component.
Solution Approach 2:
The water passage is designed as a multi-functional component that serves multiple cooling purposes. It functions as the cooling passage for the first electrical equipment, the second electrical equipment, and the oil cooler simultaneously, thereby simplifying the overall cooling structure while ensuring reliable cooling for all components.
2Volume of moving object
If the mechanical-electrical integrated unit is installed in a vehicle with limited space, then the installation space is optimized, but the degree of freedom in installing the unit is reduced
Solution Approach 1:
The mechanical-electrical integrated unit is segmented into distinct functional modules: the drive casing housing the drive apparatus, the first electrical casing for the first electrical equipment, and the second electrical casing for the second electrical equipment. These segmented modules can be independently positioned and connected through the integrated water passage system, providing installation flexibility while optimizing space utilization.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by disposing the first and second electrical casings on opposite sides of the drive casing and positioning the oil cooler in one of these electrical casings. This dimensional arrangement maximizes space utilization while maintaining installation freedom through the flexible water passage routing.
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 simplifies the cooling structure while enhancing the installation flexibility of the mechanical-electrical integrated unit, allowing for a more compact and efficient design of the hybrid electric vehicle.
Implementation Method 1
a first water-cooling passage that is provided in the first electrical casing for cooling the first electrical equipment; a second water-cooling passage that is provided in the second electrical casing for cooling the second electrical equipment
Implementation Method 2
a water-cooling oil cooler configured to cool an oil for cooling the electric motor
Data Source
AI summary
A hybrid electric vehicle includes: an electric motor; a first electrical casing which houses first electrical equipment; a second electrical casing which houses second electrical equipment and which is provided separately from the first electrical casing; a first water-cooling passage provided in the first electrical casing for cooling the first electrical equipment; a second water-cooling passage provided in the second electrical casing for cooling the second electrical equipment; and an oil cooler configured to cool an oil for cooling the electric motor. The oil cooler is disposed in one of the first electrical casing and the second electrical casing which is provided with a cooler water-cooling passage for cooling the oil cooler, such that the cooler water-cooling passage is in communication with one of the first water-cooling passage and the second water-cooling passage which is provided in the one of the first electrical casing and the second electrical casing.