Electric Power Unit Layout With 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 creates an avoidance space on one side, featuring a shortened motor length, elastic vibration damping, and integrated heat dissipation, allowing the adjustable handle or frame to be positioned similarly to traditional fuel engines, enhancing compactness and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
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 no avoidance space at the lower part, making it impossible to completely replace the existing fuel engine
Solution Approach 1:
The patent repositions components from a two-dimensional planar arrangement to a three-dimensional spatial configuration. The battery is moved to the upper part of the motor, the driving portion is placed on the side, and crucially, the avoidance space is created at the lower part by strategically positioning these components vertically and laterally, transforming the overall shape from square to a form with triangular avoidance spaces.
Solution Approach 2:
The patent creates asymmetric avoidance spaces at the lower parts of the motor by positioning the battery and driving portion in specific asymmetric locations. This results in triangular avoidance spaces on both sides of the motor, allowing the electric power unit to match the asymmetric mounting requirements of traditional fuel engines on working machines.
2Length of stationary object
If the length of the motor in axial direction is shortened to create avoidance space, then the compactness is improved, but the motor's power output and heat dissipation capabilities may be compromised
Solution Approach 1:
The patent compensates for the shortened axial length by utilizing vertical and radial dimensions. The battery is positioned above the motor, and the driving portion is placed on the side, effectively distributing components across multiple dimensions rather than extending the motor axially, thereby maintaining compactness while preserving power output capability.
Solution Approach 2:
The patent employs a nested arrangement where the driving portion is integrated into the side of the motor assembly, and the battery is positioned above, creating a compact nested structure that maximizes space utilization without requiring extended motor length, thus maintaining both compactness and power capability.
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 achieve operation flexibility and miniaturization, making it easier to replace small-sized fuel engines by replicating the avoidance space of traditional fuel engines, thus improving the structural compactness and versatility.
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, air inlets are 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 electrically-driven power unit capable of replacing a fuel engine, which comprises a motor and a battery pack
Data Source
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.