Wireless Power Transmission System With Segmented Coils
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Solution Overview
Problem
Conventional wireless power transmission systems face limitations in reducing electric power consumption and improving transmission efficiency, particularly when all power transmission coils are operated simultaneously, which can lead to increased energy usage and reduced efficiency.
Innovation Solution
A wireless power transmission system that includes a power transmission device with multiple power transmission portions and a positioning portion to efficiently position the power receiving object, allowing only specific power transmission portions to transmit power, thereby reducing energy consumption and enhancing transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If all power transmission coils are operated simultaneously to generate magnetic field in entire housing space, then power transmission coverage is improved, but electric power consumption increases
Solution Approach 1:
The housing space is divided into multiple regions, each with its own power transmission coil. Instead of operating all coils simultaneously, the system activates only the specific coil corresponding to the detected position of the power receiving object, thereby maintaining comprehensive coverage capability while reducing energy consumption.
Solution Approach 2:
The system dynamically selects and activates power transmission coils based on the real-time position of the power receiving object. This dynamic operation allows the system to adapt to different placement scenarios, ensuring efficient power transmission while minimizing energy waste by operating only the necessary coils.
2Loss of energy
If power transmission portions are distributed throughout housing space, then power transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The system divides the housing space into multiple segments, each equipped with a power transmission coil. This segmentation allows for localized power transmission, improving efficiency by concentrating magnetic field energy where needed while maintaining a manageable system architecture through modular coil placement.
Solution Approach 2:
Each power transmission coil is designed to serve multiple purposes: it can independently transmit power to objects placed in its specific region, and collectively all coils provide comprehensive coverage. This multi-functionality allows the system to achieve high transmission efficiency without requiring an excessive number of specialized components.
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 approach reduces electric power consumption and improves transmission efficiency by ensuring that only the necessary power transmission portions are active during power transfer, while also allowing for flexible positioning of the power receiving object to optimize power transfer.
Implementation Method 1
a wireless power transmission system has been known in which an electric power is wirelessly transmitted from a power transmission device to a power receiving object by using wireless power transmission such as electromagnetic induction-type and magnetic field resonance-type. The power transmission device includes a power transmission coil that generates the magnetic field
Implementation Method 2
the power receiving object includes a power receiving coil that receives the electric power by the magnetic field generated by the power transmission coil
Data Source
AI summary
A wireless power transmission system includes a power transmission device including a plurality of power transmission portions, and a power receiving object including a power receiving portion capable of receiving an electric power wirelessly transmitted from the power transmission portion. Of the plurality of power transmission portions, a specific power transmission portion transmits the electric power to the power receiving portion.