Motor Driven Vehicle Swing Arm Integrated Cooling Duct
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Solution Overview
Problem
Conventional motor driven vehicles require multiple cooling structures and increased constituent parts to cool both the electric motor and battery, complicating the vehicle body structure.
Innovation Solution
A motor driven vehicle design where a pipe-like duct, used for cooling the electric motor, also serves as a ventilation duct and protection member for the harness, reducing the need for additional protection members and simplifying the structure by housing the battery and control unit within the swing arm, which integrates cooling and protection functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate cooling structures are installed for both the electric motor and battery, then cooling effectiveness is improved, but device complexity and number of constituent parts increase
Solution Approach 1:
The patent combines the cooling functions for the electric motor and battery into a single integrated cooling structure. The cooling duct is configured to simultaneously cool both components by directing airflow through passages that service both the motor housing and battery housing, thereby reducing the number of separate cooling systems needed while maintaining effective thermal management.
Solution Approach 2:
The cooling duct is designed as a multi-functional component that serves multiple purposes: it cools the electric motor, cools the battery, and is integrated into the swing arm structure. This universal cooling solution eliminates the need for separate dedicated cooling systems for each component, simplifying the overall vehicle body structure while achieving comprehensive cooling coverage.
2Temperature
If multiple separate cooling structures are installed, then cooling coverage is improved, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The cooling structures for the motor and battery are merged into a single integrated cooling duct assembly that is pre-configured as one unit. This combined structure is then installed as a single component into the swing arm, significantly reducing assembly steps and complexity compared to installing multiple separate cooling structures individually.
3Adaptability or versatility
If the battery is housed in the swing arm with the electric motor, then device integration is improved, but heat dissipation difficulty increases
Solution Approach 1:
The patent combines the battery housing and electric motor housing into a single integrated swing arm structure with unified cooling passages. This merging allows both components to share the same cooling system and airflow paths, ensuring that heat from both sources can be effectively dissipated through the integrated cooling duct without requiring separate thermal management systems.
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 design minimizes the number of vehicle parts, simplifies the structure, reduces deformation of components due to swing movement, and enhances user convenience during charging by integrating functions within the swing arm, eliminating the need for separate cooling structures on the vehicle body.
Implementation Method 1
A pipe-like duct has one end side connected to a hole communicating with an inside space of the swing arm, and the other end side extending toward the vehicle body side
Data Source
AI summary
A motor driven vehicle can include a swing arm swingably mounted to a vehicle body of a motor driven vehicle, and housing an electric motor driving a drive wheel of the vehicle. A pipe-like duct can have one end side connected to a hole communicating with an inside space of the swing arm, and another end side extending toward a vehicle body side. A harness, configured to drive the electric motor, can be inserted through the duct.