Phased Array Wireless Resonant Power Delivery
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Solution Overview
Problem
Users of mobile devices face challenges in charging their batteries due to inaccessibility of electrical power, requiring multiple batteries and power cables, which are often misplaced or device-specific, and can be inconvenient, especially in public places or critical applications where power availability is limited.
Innovation Solution
A wireless resonant power transmission system using magnetic coupling to charge batteries remotely, employing a phased array of coils tuned to a specific frequency, allowing for efficient power delivery over distance with authentication and safety mechanisms to ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless resonant power transmission is used, then power delivery convenience is improved, but system complexity increases
Solution Approach 1:
The patent replaces the mechanical connection of power cables with wireless resonant power transmission using magnetic coupling. The transmitter and receiver coils create a magnetic field that transfers power without physical contact, eliminating the need for plugging and unplugging cables while maintaining power delivery functionality.
Solution Approach 2:
The system uses resonant frequency matching between transmitter and receiver coils to enable efficient wireless power transfer. By tuning the operational frequency of both coils to the same resonant frequency, the system achieves effective power delivery over distance without requiring direct mechanical contact or complex routing infrastructure.
2Duration of action of moving object
If multiple batteries are carried for continued operation, then power availability is improved, but transport burden increases
Solution Approach 1:
The patent introduces an external wireless power transmission system as an intermediary between the power source and the device battery. Instead of carrying multiple batteries, the user can wirelessly recharge the device battery from a remote power source using magnetic coupling, reducing the need for backup batteries while maintaining continuous power availability.
3Reliability
If power cables are used for charging, then power delivery reliability is improved, but portability is worsened
Solution Approach 1:
The patent replaces the mechanical power cable connection with a wireless magnetic coupling system. The transmitter and receiver coils establish a wireless power link that eliminates the need for physical cables, improving portability by removing the cable requirement while maintaining reliable power delivery through resonant magnetic coupling.
4Loss of energy
If near field power delivery is implemented, then energy efficiency is improved, but transmission distance is limited
Solution Approach 1:
The patent employs dynamic frequency tuning and phase adjustment of the transmitter and receiver coils to optimize power transfer at varying distances. By dynamically adjusting the resonant frequency and phase relationship between coils, the system maintains efficient energy transfer over extended distances compared to static near-field systems, balancing energy efficiency with increased transmission range.
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 efficient, secure, and convenient battery charging of mobile devices without the need for physical power cables, maintaining battery life and ensuring safety by automatically adjusting power delivery based on device authentication and environmental interference.
Implementation Method 1
delivers electric power wirelessly to the target device through magnetic coupling at a resonant frequency
Implementation Method 2
magnetic coupling at a resonant frequency
Implementation Method 3
The phase controller is operable to control the phased array to direct the magnetic field pattern toward the target device location
Implementation Method 4
receiver resonant phased array...each of a plurality of tuned circuits having a coil and a capacitor resonating at a coupled magnetic field frequency
Data Source
AI summary
A resonant power transmission system for wirelessly delivering electric power to a target device. A transmitter resonant phased array includes a power source operable to source alternating current power at a target frequency. A plurality of transmitting elements, each operable to produce a non-radiated magnetic field, produces a composite non-radiated magnetic field. A plurality of transmitter tuned circuit elements couple the alternating current power to the plurality of transmitting elements. Control circuitry controls the plurality of transmitter tuned circuit elements to direct the composite non-radiated magnetic field toward the target device. Communication circuitry communicates with the target device. The plurality of transmitting elements may be a plurality of coils with the control circuitry individually controlling phase of the non-radiated magnetic fields produced by the plurality of transmitting elements by control of the plurality of transmitter tuned circuit elements. The plurality of coils may be directed mechanically in other embodiments.