Electric Power Unit Layout for Fuel-Engine Avoidance Space
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Solution Overview
Problem
Existing electric power units lack an avoidance space similar to that of traditional fuel engines, limiting their ability to replace fuel engines in compact and versatile applications.
Innovation Solution
An electrically-driven power unit is designed with a motor and battery pack configuration that includes a supporting frame, elastic vibration damping bodies, and a compact motor structure with an outer rotor and heat dissipation impellers, creating a triangular avoidance space at the lower side, allowing for flexible and compact integration with working machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery is arranged on the upper part of the motor and the driving portion is arranged on the side part of the motor, then the electric power unit achieves miniaturization and versatility to some extent, but the entire electric power unit is substantially square with one side of the lower part not having an avoidance space of a traditional fuel engine, thus cannot completely replace the existing fuel engine
Solution Approach 1:
The patent reconfigures the spatial arrangement by moving the battery to the front side of the motor and the driving portion to the rear side, creating a new dimensional layout that generates a triangular avoidance space at the lower part. This dimensional reorganization allows the electric power unit to achieve the same avoidance space function as traditional fuel engines while maintaining miniaturization and versatility.
2Shape
If the length of the motor in axial direction is shortened to create avoidance space, then the avoidance space is formed, but the electric unit needs to be mounted at the front part of the motor below the battery pack, increasing structural complexity
Solution Approach 1:
The patent merges the electric unit with the motor structure by mounting it at the front part below the battery pack, integrating multiple functions into a compact assembly. This merging approach reduces the need for separate mounting structures and simplifies the overall configuration while still achieving the required avoidance space.
Solution Approach 2:
The patent employs an elastic vibration damping body that can be lifted to an upper inclination angle, providing dynamic adjustment capability. This dynamic element allows the structure to adapt to different operational conditions while maintaining the avoidance space configuration, reducing the need for complex fixed structural arrangements.
3Adaptability or versatility
If the electric power unit is designed to be compact for miniaturization, then versatility is improved, but the arrangement of components may conflict with creating an avoidance space similar to traditional fuel engines
Solution Approach 1:
The patent segments the electric power unit into distinct functional zones: the battery at the front side, the motor in the middle, and the driving portion at the rear side. This segmentation allows each component to be optimally positioned to achieve both compact miniaturization and the creation of a triangular avoidance space at the lower part, resolving the conflict between size reduction and space availability.
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 solution enables the electric power unit to be more compact and versatile, allowing for easier replacement of small-sized fuel engines by providing an avoidance space similar to traditional fuel engines, enhancing operational flexibility and miniaturization.
Implementation Method 1
lower parts of both sides of the supporting frame are respectively mounted on the supports on the corresponding sides through elastic vibration damping bodies
Implementation Method 2
heat dissipation impellers are mounted at the front end of the rotating shaft, an outer cover covering the heat dissipation impellers is arranged at a front end of the shell, an air inlet is formed in a front surface of the outer cover, and air outlets are circumferentially distributed at one end of the outer cover connected with the shell
Implementation Method 3
an annular portion and an end cover portion are arranged on the outer rotor, a permanent magnet is attached to an interior of the annular portion and surrounds the stator coil
Data Source
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AI summary
The present invention discloses an electrically-driven power unit capable of replacing a fuel engine, which comprises a motor and a battery pack, wherein the motor is mounted on a base, the battery pack is supported on an upper part of the motor through a supporting frame, and one side of the motor is located below the battery pack to form an avoidance space. According to the present invention, the lower part of one side of the electrically-driven power unit is provided with the avoidance space similar to that of the traditional fuel engine, so that it is convenient to replace the small-sized fuel engine.