Wireless Power Transmitter PRU Control Signal Management
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Solution Overview
Problem
Current wireless charging technologies lack standardized methods for prioritizing wireless charging, selecting communication frequencies, adjusting power, and managing charging cycles in a wireless charging network, leading to inefficiencies and potential harm from dispersed energy.
Innovation Solution
A method and system for wireless power transmitters and receivers that include control signals to manage charging permissions, standby instructions, and power allocation, using PRU control signals to indicate charging authorization and availability, ensuring efficient and safe energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless power transmitters use resonance method to transfer energy, then energy transmission efficiency is improved and harmful dispersion is reduced, but standardized control methods for power management and charging permission are lacking
Solution Approach 1:
The patent applies parameter changes by implementing standardized control parameters for power management including permission fields, standby time parameters, and power allocation levels. These standardized parameters enable efficient resonance-based energy transfer while maintaining systematic control over the charging process, resolving the contradiction between energy efficiency and control complexity.
2Ease of operation
If contact charging terminals are used to recharge batteries, then charging connection is established, but terminals are contaminated with dirt or rust leading to inappropriate charging
Solution Approach 1:
The patent replaces the mechanical contact-based charging system with a wireless resonance-based charging system. This substitution eliminates the physical contact terminals that become contaminated with dirt and rust, thereby maintaining ease of operation while significantly improving charging reliability and appropriateness.
3Power
If wireless power transmitters have limited available power, then power allocation must be controlled, but charging permission and standby management become complex
Solution Approach 1:
The patent implements dynamic power management through standardized permission control signals that adapt to available power levels. The system dynamically adjusts charging permission status and standby time allocations based on real-time power availability, enabling effective power control without requiring overly complex permission management systems.
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 solution enables efficient power management and safe charging by allowing wireless power transmitters to authorize charging based on available power and user standby status, reducing energy dispersion and ensuring compatibility with various devices.
Implementation Method 1
The method based on electromagnetic induction transfers power between primary and secondary coils. More specifically, moving a magnet around a coil produces an induced current, based on which a magnetic field is produced at a transmission end. The change in the magnetic field at a receiving end induces a current to generate energy.
Implementation Method 2
In the resonance method using resonance, resonant electrical energy of electromagnetic waves is directly transferred only to a device having a same resonant frequency, and a non-used part of the energy is re-absorbed into the magnetic field, rather than being dispersed in the air.
Data Source
AI summary
An apparatus and method are provided for permitting a wireless power receiver to be charged by a wireless power transmitter. The method includes generating a Power Receiving Unit (PRU) control signal including permission information indicating charging permission for the wireless power receiver; and transmitting the PRU control signal to the wireless power receiver.