Wireless Power Feeding for Mixed Working Machines Without Charging Stops
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Solution Overview
Problem
Motorized working machines, such as lawn mowers and construction equipment, face interruptions due to varying power requirements and frequent charging needs, which can delay work operations.
Innovation Solution
A work system comprising a power feeding device with multiple wireless power transmission units and corresponding power reception units in working machines, allowing for efficient wireless power supply to different types of machines without interrupting their operations, with adjustable power reception capabilities and regenerative power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If working machines are charged at high frequency, then power availability is improved, but work continuity is worsened
Solution Approach 1:
The patent implements wireless power transmission that operates continuously during the working machines' operation, eliminating the need to stop work for charging. The power feeding device maintains constant power supply to the working area, ensuring uninterrupted useful action while addressing power availability needs.
Solution Approach 2:
The patent replaces the mechanical plug-and-socket charging system with wireless power transmission. This substitution eliminates the need for physical connection and disconnection operations, allowing power transfer without interrupting the working machines' operation, thus resolving the conflict between power availability and work continuity.
2Productivity
If wireless power transmission is implemented, then work continuity is improved, but device complexity is worsened
Solution Approach 1:
The power feeding device is designed to serve multiple working machines of different types simultaneously within the working area. By implementing a universal wireless power transmission system that can accommodate various machines with different power requirements, the patent improves overall productivity while managing system complexity through standardized infrastructure.
Solution Approach 2:
The patent introduces a power feeding device as an intermediary infrastructure between the power source and working machines. This mediator handles the complexity of wireless power transmission, signal modulation, and power distribution, shielding the working machines from system complexity while enabling continuous operation and improved productivity.
3Adaptability or versatility
If power is adjusted for different machine types, then adaptability is improved, but control complexity is worsened
Solution Approach 1:
The patent implements feedback mechanisms where the power feeding device receives information about the working machines' power requirements and automatically adjusts the transmitted power accordingly. This feedback-based control enables the system to adapt to different machine types and power needs without requiring complex manual control, resolving the contradiction between adaptability and control 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
Enables continuous operation of working machines by providing power wirelessly and efficiently managing power distribution, improving work efficiency and allowing for remote operation and unmanned working areas.
Implementation Method 1
at least one first power transmission unit configured to wirelessly transmit power to a working area of the plurality of working machines
Implementation Method 2
each of the plurality of working machines includes a power reception unit configured to receive the power wirelessly transmitted to the working area
Data Source
AI summary
A work system includes a plurality of working machines each including a working unit; and a power feeding device configured to supply power to the plurality of working machines. The plurality of working machines includes a plurality of types of working machines different in amount of power required to drive the working unit. The power feeding device includes at least one first power transmission unit configured to wirelessly transmit power to a working area of the plurality of working machines. Each of the plurality of working machines includes a power reception unit configured to receive the power wirelessly transmitted to the working area.