Motor-Based Wireless Power Supply for Multiple Load Devices
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Solution Overview
Problem
Existing motor driving systems with contactless power supply structures are limited in their power transmission capabilities, primarily supplying power from a stator to a rotor, and require extensive wiring, increasing labor and complexity.
Innovation Solution
A power supply system utilizing electric motors as power transmission bases for contactless power supply to load devices, employing methods like electromagnetic induction, magnetic resonance, or microwave power transmission, with a controller to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If contactless power supply is implemented from stator to rotor in motor driving systems, then power transmission is achieved without wiring between these components, but the power supply effect is limited only to the rotor and does not extend to other load devices
Solution Approach 1:
The motor is transformed into a multi-functional device that serves both as a drive source and as a contactless power supply unit. The motor's coil acts as a power transmitting coil that can wirelessly supply power to multiple types of load devices (sensors, cameras, lighting, switches, small motors, solenoids, relays) in addition to its original function of driving the rotor, thereby achieving universal power supply coverage throughout the entire equipment system
2Reliability
If extensive wiring is used to supply power to multiple load devices, then reliable power delivery is ensured, but labor involved in wiring and number of wiring increases
Solution Approach 1:
The patent replaces the mechanical wiring system with a contactless electromagnetic power transmission system. The motor's coil generates electromagnetic fields that wirelessly transmit power to load devices equipped with power receiving coils, eliminating the need for physical wire connections and thereby reducing wiring complexity while maintaining power delivery capability
3Ease of operation
If power is supplied only to the rotor via contactless method, then wiring between stator and rotor is simplified, but power supply to other equipment components is not achieved
Solution Approach 1:
The motor is transformed into a multi-functional device that serves both as a drive source and as a contactless power supply unit. The motor's coil acts as a power transmitting coil that can wirelessly supply power to multiple types of load devices (sensors, cameras, lighting, switches, small motors, solenoids, relays) in addition to its original function of driving the rotor, thereby achieving universal power supply coverage throughout the entire equipment system
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
Reduces wiring complexity and labor by using motors as power transmission bases, ensuring efficient power distribution to load devices without waste, and minimizing total power consumption.
Implementation Method 1
a power supply method for a relatively short distance such as the electromagnetic induction method
Implementation Method 2
the magnetic resonance method
Implementation Method 3
a power supply method for a relatively long distance such as the microwave method
Data Source
AI summary
Provided is a power supply system (9) that includes at least one electric motor (93) including a power transmitter (931) configured to transmit power via a contactless power supply method to a load device (95) to be supplied with power and at least one load device (95) including a power receiver (951) configured to receive the power transmitted from the power transmitter.