Wireless Power Repeater with Intermediary Resonant Circuit
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Solution Overview
Problem
Current wireless power transmission systems employing resonance have limited transmission distance and efficiency, necessitating improvements to effectively transfer power over longer distances.
Innovation Solution
Incorporating a power receiver with a third resonant circuit between a power transmitter and a repeater, both equipped with first and second resonant circuits respectively, to enhance power transmission efficiency through magnetic resonance, and adjusting power reception based on the alignment direction of the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If wireless power transmission employs resonance to extend transmission distance, then transmission distance is improved, but transmission efficiency deteriorates
Solution Approach 1:
The patent introduces a repeater as an intermediary device between the power transmitter and power receiver. The repeater includes a resonant circuit that receives power wirelessly from the transmitter, stores it temporarily, and retransmits it to the receiver. This intermediary approach enables power to be transmitted over longer distances while maintaining efficiency by breaking the transmission path into segments, each optimized for resonant coupling.
Solution Approach 2:
The power transmission system is segmented into multiple independent resonant circuits: a transmitter resonant circuit, a repeater resonant circuit, and a receiver resonant circuit. Each segment operates as an independent resonant system, allowing power to be transmitted in stages. This segmentation resolves the contradiction by enabling extended transmission distance through multiple hops while maintaining high efficiency within each short-distance resonant link.
2Length of stationary object
If a repeater is added to extend transmission distance, then transmission distance is improved, but device complexity increases
Solution Approach 1:
The repeater is designed as a universal component that can be deployed at multiple points along the transmission path. Each repeater unit performs the same dual function: receiving power wirelessly and retransmitting it. This multi-functionality reduces overall system complexity by using identical standardized modules rather than custom-designed complex transmission systems.
Solution Approach 2:
The repeater acts as a simple intermediary that bridges the gap between transmitter and receiver without requiring complex control systems. By using passive resonant circuits with natural coupling properties, the repeater extends transmission distance while maintaining relatively simple device architecture, avoiding the need for complex active power management electronics.
3Loss of energy
If power receiver alignment is adjusted to optimize power reception, then power reception efficiency is improved, but ease of operation deteriorates
Solution Approach 1:
The power receiver is designed with dynamic alignment capability, allowing it to automatically adjust its orientation to optimize magnetic coupling with the transmitter and repeater. This dynamic adjustment mechanism responds to coupling strength variations in real-time, maintaining optimal power reception efficiency without requiring manual intervention or complex user operations.
Solution Approach 2:
The alignment adjustment system operates autonomously, using the magnetic resonance coupling characteristics to self-adjust the receiver orientation. The system monitors power transfer efficiency and automatically reorients the receiver to maximize coupling, eliminating the need for user intervention while maintaining optimal performance throughout operation.
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 configuration significantly improves wireless power transmission efficiency, enabling longer distance power transfer and automatic charging of mobile devices, while optimizing power reception by adjusting for receiver alignment.
Implementation Method 1
a power receiver disposed between the power transmitter and the repeater, including a third resonant circuit magnetically resonating with the first and second resonant circuits
Implementation Method 2
a wireless power transmission or a wireless energy transfer refers to a technology for wirelessly transferring electric energy to desired devices. In the 1800's, an electric motor or a transformer employing the principle of electromagnetic induction has been extensively used
Data Source
AI summary
Disclosed is a wireless power transmission system. The wireless power transmission system includes a power transmitter including a first resonant circuit and wirelessly transmitting power using a resonance, at least one repeater including a second resonant circuit resonating with the first resonant circuit, and a power receiver disposed between the power transmitter and the repeater, including a third resonant circuit magnetically resonating with the first and second resonant circuits, and receiving power from the power transmitter and the repeater. If the power transmitter and the repeater are installed in an indoor space, such as a room or an office room, and the power receiver is installed in a mobile device, such as a cellular phone, the mobile device is automatically charged in the indoor space. The power transmission efficiency is improved by installing the power receiver between the power transmitter and the repeater. The received power is adjusted according to the alignment direction of the power receiver.