Straddle-Type Electric Vehicle Wind Guiding Duct Cooling
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Solution Overview
Problem
The existing structure of straddle-type electric vehicles limits the increase in battery capacity, which in turn restricts the travel distance of these vehicles.
Innovation Solution
A straddle-type electric vehicle design that includes a pair of main frames, a pivot frame, a swing arm, a battery arranged between the main frames, a power unit, and wind guiding ducts positioned outwardly relative to the main frames, with an air outlet port between the power unit and the pivot frame to efficiently guide and emit traveling wind for cooling and heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the battery capacity is increased to extend travel distance, then the travel distance is improved, but the available space in the vehicle body is reduced
Solution Approach 1:
The patent utilizes the vehicle width direction (lateral dimension) by positioning wind guiding ducts outwardly relative to the main frames, creating additional spatial utilization that allows for increased battery capacity in the longitudinal direction without compromising overall vehicle body space
2Duration of action of moving object
If the battery capacity is increased to extend travel distance, then the travel distance is improved, but the vehicle body structure becomes more complex
Solution Approach 1:
The wind guiding ducts serve multiple functions: they guide traveling wind to the space between main frames for cooling the battery and power unit, and their outward positioning also creates additional space for battery installation, thereby achieving both cooling and space utilization without requiring separate dedicated structures
Solution Approach 2:
The patent combines the cooling function and space utilization function into a single integrated structure - the wind guiding ducts positioned outwardly relative to the main frames simultaneously achieve wind guidance for cooling and create additional space for battery installation, reducing overall structural complexity
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 allows for an increase in battery capacity and travel distance by effectively utilizing traveling wind for cooling and heat dissipation, enhancing the vehicle's performance.
Implementation Method 1
traveling wind that has flowed in from an inflow port on a front portion of a vehicle body passes through the inside of a case of the electric motor device and then flows out from an outflow port on a rear portion of the vehicle body; as a result, the electric motor device is cooled
Implementation Method 2
an air outlet port that is provided between the power unit and the pivot frame so as to be capable of emitting the traveling wind to an area below the vehicle body
Data Source
AI summary
A straddle-type electric vehicle, comprising a pair of left and right main frames, a seat rail extending rearward from a rear portion of each of the main frames, a pivot frame extending downward from a rear portion of each of the main frames, a swing arm supported by the pivot frame and by which a rear wheel is swingably supported, a battery arranged in a space between the main frames, a power unit arranged in the space and generates motive power based on electric power of the battery, and a wind guiding duct for guiding traveling wind to the space, the wind guiding duct provided relative to each of the main frames, the wind guiding duct being positioned more outward in a vehicle width direction than the main frames.