EV Cooling Duct Layout for Battery and Rear Motor Heat
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Solution Overview
Problem
Heat-generating components in electric vehicles generate heat during operation, leading to over-heating and increased energy consumption due to the use of cooling fans, which decreases efficiency and affects the driving experience.
Innovation Solution
A duct system is implemented to conduct air from the front portion of the vehicle to heat-generating components like the electric motor and controller, effectively cooling them without additional cooling components, thus reducing energy consumption and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fans are used to cool heat-generating components, then the components are cooled effectively, but energy consumption increases and efficiency decreases
Solution Approach 1:
The patent extracts the cooling function from active cooling fans and transfers it to the vehicle's natural airflow system. The duct system captures ambient air flowing through the vehicle body and directs it to heat-generating components, eliminating the need for energy-consuming cooling fans while maintaining effective cooling
Solution Approach 2:
The vehicle's body airflow, originally designed for aerodynamic purposes, is repurposed to serve a dual function: maintaining aerodynamic efficiency and providing cooling for heat-generating components. This multi-functional use of the same airflow eliminates the need for separate cooling systems
2Temperature
If cooling fans are used to cool heat-generating components, then the components are cooled effectively, but noise increases and driving experience is affected
Solution Approach 1:
The patent removes the noise-generating cooling fans from the system and replaces them with a passive duct-based airflow redirection system. The duct system utilizes the vehicle's existing aerodynamic airflow to cool components silently, eliminating the harmful noise factor
3Use of energy by moving object
If a duct system is implemented to conduct air to heat-generating components, then energy consumption is reduced and cooling is achieved without additional components, but the device complexity increases
Solution Approach 1:
The patent merges the cooling duct system with the vehicle's existing body structure and aerodynamic airflow paths. By integrating the duct system into the vehicle's natural airflow architecture rather than adding completely separate cooling infrastructure, the complexity is minimized while achieving effective cooling
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 duct system efficiently cools heat-generating components, enhancing the performance of the electric vehicle by saving energy and eliminating noise from cooling fans.
Implementation Method 1
A duct system is implemented to conduct air from the front portion of the vehicle to heat-generating components like the electric motor and controller, effectively cooling them
Data Source
AI summary
An electric Vehicle (EV) includes a frame extending rearwards from the front portion of the EV towards a rear portion of the EV. A floorboard structure is disposed below the frame and is supported by the frame. A battery is disposed in a cavity defined between the floorboard structure and the frame. A first heat-generating component is disposed in the rear portion of the EV. The EV includes a duct extending from the front portion to the first heat-generating component to conduct air from the front portion to the first heat-generating component. A second heat-generating component is disposed in the cavity. The duct includes: an inlet facing the front portion to receive air from the front portion; a first outlet facing the first heat-generating component to supply air to the first heat-generating component; and a second outlet facing the second heat-generating component to supply air to the second heat-generating component.