Wireless Power Transmitter Beamforming for Multi-Device Charging
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Solution Overview
Problem
Existing wireless charging technologies face inefficiencies when charging multiple devices simultaneously, as energy transmission efficiency decreases with increased demand, and there is a need for secure, authenticated power delivery to ensure proper charging and prevent unauthorized power usage.
Innovation Solution
A wireless power transmitting system that authenticates devices through received information, determines the phase and amplitude of electromagnetic waves based on device location, and controls power transmission efficiently, using a system comprising a wireless power transmitting device with a communication unit and controller to manage power distribution based on authentication and location information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transmission is used to charge multiple devices simultaneously, then the convenience and versatility of wireless charging is improved, but the energy transmission efficiency deteriorates
Solution Approach 1:
The patent segments the wireless power transmission by directing electromagnetic waves to specific locations using beamforming technology. The system divides the power transmission into targeted beams that can be individually controlled and directed to different receiving devices, allowing multiple devices to be charged simultaneously without significant energy loss. This is achieved through spatial segmentation of the electromagnetic field using antenna arrays and signal processing techniques.
2Ease of operation
If wireless power transmission is used without authentication, then the ease of operation is improved, but the reliability and security of power delivery deteriorates
Solution Approach 1:
The patent implements authentication procedures before initiating power transmission. The system performs preliminary verification of receiving devices through device identification and authentication protocols, ensuring that only authorized devices receive power. This preliminary action maintains ease of operation for legitimate devices while ensuring reliability and security by preventing unauthorized power usage before it occurs.
3Adaptability or versatility
If electromagnetic waves are used for remote power transmission, then the adaptability and transmission distance are improved, but the energy loss and interference with surrounding devices increases
Solution Approach 1:
The patent employs beamforming technology to concentrate electromagnetic energy into focused beams directed at specific receiving devices. This creates local quality in the electromagnetic field distribution, where energy is concentrated at the intended receiving location rather than dispersing uniformly. The system adjusts the phase and amplitude of signals from individual antenna elements to create constructive interference at the target location and destructive interference elsewhere, thereby reducing energy loss and minimizing interference with surrounding devices.
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 system ensures efficient and secure wireless power transmission to authenticated devices, maintaining high energy transfer efficiency even when multiple devices are charged simultaneously, by accurately determining the location and adjusting power accordingly.
Implementation Method 1
The wireless charging technology converts electric energy into electromagnetic waves and transfers power over a remote distance
Implementation Method 2
power is wirelessly transferred using an electric power transmission principle of the resonance scheme based on a coupled mode theory even if a device to be charged is separated from a charging device by several meters. The electromagnetic wave containing the electrical energy resonates
Data Source
AI summary
Provided is a device for transmitting wireless power. The wireless power transmitting device includes a communication unit, a power receiving unit, and a processor. The processor is configured to obtain, through the communication unit, communication establishment information and location information associated with a wireless charging area from a tag device, establish, through the communication unit, communication with a wireless power transmitting device based on the communication establishment information, and control to transmit the location information to the wireless power transmitting device. The power receiving unit wirelessly receives the power from the wireless power transmitting device after the communication unit transmits the location information.