Vehicle High-Voltage Device and Power Converter Layout
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Solution Overview
Problem
In hybrid and electric vehicles, the high-voltage devices and power converters are typically either both inside or both outside the vehicle cabin, leading to issues with temperature management, noise interference, and structural complexity, as well as inefficiencies in cooling and cable length.
Innovation Solution
The high-voltage device is disposed inside the vehicle cabin, where it is air-cooled, while the power converter is positioned outside, utilizing a water-cooled cooling mechanism, and both are arranged next to each other in the front-rear direction to minimize impact and optimize space, with integrated cooling and cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If both high-voltage device and power converter are disposed inside the vehicle cabin, then the vehicle structure is simplified, but temperature management and noise interference problems worsen
Solution Approach 1:
The patent divides the high-voltage system into two separate locations: the high-voltage device remains inside the vehicle cabin while the power converter is placed outside. This segmentation allows each component to be optimized for its specific environment - the high-voltage device benefits from the protected cabin environment while the power converter can be air-cooled outside, resolving the temperature management issue without requiring complex internal cooling infrastructure.
2Ease of manufacture
If both high-voltage device and power converter are disposed inside the vehicle cabin, then installation is simplified, but noise interference and cooling efficiency worsen
Solution Approach 1:
The power converter, which generates significant noise and heat, is extracted from the vehicle cabin and placed in the external engine compartment. This extraction removes the harmful noise and heat sources from the passenger compartment while maintaining simple installation through standardized mounting brackets and pre-routed cable pathways in the vehicle body structure.
3Volume of moving object
If both high-voltage device and power converter are disposed inside the vehicle cabin, then space utilization is improved, but cooling efficiency and cable length optimization worsen
Solution Approach 1:
The patent utilizes the vertical dimension by mounting the power converter on the underside of the engine compartment floor, directly above the wheel well area. This three-dimensional placement optimizes space utilization within the vehicle's structural envelope while positioning the power converter close to the high-voltage device through the floor structure, minimizing cable length and energy loss without compromising cooling efficiency through proximity to external air flow.
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 reduces the risk of high-voltage device degradation, minimizes noise interference, simplifies the vehicle structure, and enhances cooling efficiency, improving fuel efficiency and power performance by allowing optimal cooling for each component and reducing the vehicle's center of gravity.
Implementation Method 1
The high-voltage device is disposed inside the vehicle cabin, where it is air-cooled
Implementation Method 2
the power converter is positioned outside, utilizing a water-cooled cooling mechanism
Data Source
AI summary
A vehicle includes a motor, a high-voltage device, and a power converter. The motor moves the vehicle. The high-voltage device is disposed inside a vehicle cabin of the vehicle. The power converter is disposed outside the vehicle cabin. The power converter is connected to the motor and the high-voltage device to convert electric power output from the high-voltage device and to supply the converted electric power to the motor. The high-voltage device is arranged to be juxtaposed to the power converter along a front-rear direction of the vehicle.