Electric Vehicle Power Converter Cooling Air Path
Solution Overview
Problem
Conventional fuel cell motorcycles have inefficient cooling systems due to the exposure of heat radiation fins, leading to increased air resistance and reduced cooling efficiency.
Innovation Solution
An electric vehicle design with a frame and exterior structure that creates a longitudinal cooling air path for the power converter, allowing air to flow efficiently and directing wind to heat radiation fins for enhanced cooling, while minimizing air detour around the fins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat radiation fins are exposed to travelling wind, then cooling is provided, but air resistance increases and air detours around the fins reducing cooling efficiency
Solution Approach 1:
The patent introduces an exterior structure as an intermediary element that mediates between the travelling wind and the heat radiation fins. This exterior structure creates a controlled air path that directs cooling air to the fins while preventing air detour, thereby resolving the contradiction between providing cooling and minimizing air resistance.
Solution Approach 2:
The exterior structure creates different airflow characteristics in different regions: in the region of the heat radiation fins, the structure ensures high-velocity cooling air flow, while in other regions it minimizes air resistance. This local differentiation of airflow quality resolves the contradiction between cooling efficiency and air resistance.
2Temperature
If heat radiation fins are exposed to travelling wind, then cooling is provided, but air detours in the periphery avoiding the fins
Solution Approach 1:
The exterior structure acts as an intermediary that simplifies the air flow path by preventing detour. It guides the travelling wind directly to the heat radiation fins through a defined air path, eliminating the complex detouring flow pattern that would otherwise occur in the periphery.
Solution Approach 2:
The exterior structure introduces a new spatial dimension for airflow control by creating a defined three-dimensional air path. This structured approach to airflow management prevents the air from detouring in the periphery and ensures direct flow to the fins, simplifying the overall flow path.
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 design significantly improves the cooling efficiency of the power converter by ensuring sufficient airflow and heat dissipation, addressing the inefficiencies of conventional systems.
Implementation Method 1
a cooling air path for the power converter to allow cooling air to flow the cooling air path along the longitudinal direction
Implementation Method 2
a plurality of heat radiation fins protruding toward an inner surface of the exterior
Implementation Method 3
heat radiation fins provided in the DC-DC converter be exposed to travelling wind passing through the inside of the exterior
Implementation Method 4
an air induction port that is provided at a front end of the cooling air path to allow travelling wind to flow into the cooling air path
Data Source
AI summary
An electric vehicle capable of efficiently and reliably cooling a power converter disposed inside an exterior. An electric vehicle includes a frame extending in a longitudinal direction, a power converter being long in the longitudinal direction along the frame, and an exterior extending in the longitudinal direction to cover the frame and the power converter, the exterior defining a cooling air path between the power converter to allow cooling air to flow through the cooling air path along the longitudinal direction. The power converter extends in the longitudinal direction in the cooling air path, and includes a plurality of heat radiation fins protruding toward an inner surface of the exterior, and the exterior includes an air induction port provided at a front end of the cooling air path to allow travelling wind to flow into the cooling air path.