Resonant Wireless Charging Channel With Separate Power and Data Bands
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Solution Overview
Problem
Users of mobile devices face inconvenience and expense due to the need to carry multiple batteries and power cables for charging, especially in situations where electrical power is inaccessible, and there is a risk of disrupting critical activities during battery recharging.
Innovation Solution
A wireless power delivery system using magnetic resonant coupling allows for remote, uninterrupted charging of portable devices by transmitting power through non-radiated magnetic fields, enabling charging without the need for physical power cables or sockets, and integrating power transmission with communication capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If near field power delivery using magnetically coupled resonance is used, then wireless power transmission is achieved, but communication capability is lost due to frequency mismatch
Solution Approach 1:
The system separates power transmission and communication functions into different frequency domains. Power transmission occurs at low frequency (e.g., 10 MHz) using magnetic resonance, while communication uses high frequency (e.g., 2 GHz) electromagnetic waves. This segmentation allows both functions to operate simultaneously without interference, resolving the contradiction between achieving wireless power transmission and maintaining communication capability.
Solution Approach 2:
The system employs a universal electromagnetic field approach where the same spatial channel supports both power delivery and communication. By using different frequency bands within the electromagnetic spectrum for different purposes, the system achieves multi-functionality in a single integrated wireless platform, allowing both power transfer and data communication to coexist.
2Duration of action of moving object
If multiple batteries and power cables are carried for charging, then battery life is extended, but user burden and expense increase
Solution Approach 1:
The invention replaces the mechanical system of physical batteries and power cables with a wireless electromagnetic field-based power transmission system. Users simply need to bring their device near the power transmission unit, and power is delivered wirelessly through magnetic resonance coupling. This eliminates the need to carry multiple batteries or cables, significantly reducing user burden while maintaining continuous operation capability.
3Use of energy by moving object
If power cables are used for charging, then battery recharging is enabled, but device operations may be disrupted
Solution Approach 1:
By replacing the mechanical connection of power cables with wireless magnetic resonance power transmission, the system eliminates physical interruptions to device operation. Users can charge their devices without plugging in cables, allowing continuous use of the device during charging. This maintains operational reliability while enabling battery recharging.
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 mobile devices by providing a reliable and convenient means of battery recharging over distances, eliminating the need for physical power sources and reducing the risk of disrupting device operations during charging.
Implementation Method 1
Near field power delivery typically exploits magnetically coupled resonance, which allows two objects resonating at the same frequency to exchange energy with moderate efficiency.
Implementation Method 2
capable of generating power for power transmission by non-radiated magnetic field waves of a specified target resonant frequency
Implementation Method 3
capable of receiving power transmitted as non-radiated magnetic fields
Data Source
AI summary
A wireless powering device for providing directional wireless power to a target device. The wireless powering device includes a power source and communication circuitry configured to receive a communication signal from the target device. The wireless powering device further includes source power manager circuitry configured to determine (e.g., based on the communication signal) a location of the target device relative to the wireless powering device. Resonant coupling circuitry is coupled to the power source and the source power manager circuitry, the resonant coupling circuitry configured to generate a directional wireless power transmission, based on the location of the target device, to transfer wireless power to the target device. In an embodiment, the directional wireless power transmission is via non-radiated magnetic field. In another embodiment, the direction wireless power transmission is via a radiated magnetic field.