Wireless Power Transmitter Dynamic Mode Switching
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Solution Overview
Problem
Current wireless power transmission systems lack efficient methods to determine whether to transmit communication power or charging power to wireless power reception apparatuses, leading to unnecessary energy consumption and potential battery overcharging.
Innovation Solution
The system receives information on the operating power of a micro control unit (MCU) and the output of a DC/DC converter from the wireless power reception apparatus, determining whether to transmit communication power or charging power based on the battery charge status, external power connection, and available power, allowing for optimized power allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transmission systems continuously transmit charging power to power reception apparatuses, then power reception reliability is improved, but energy waste increases and battery overcharging occurs
Solution Approach 1:
The patent implements a feedback mechanism where the power reception apparatus transmits information about its charging status (battery charge level, external power connection status) back to the power transmission apparatus. Based on this feedback, the transmission apparatus dynamically adjusts whether to continue transmitting charging power or switch to communication power only, thereby preventing energy waste and battery overcharging while maintaining reliable power reception when needed.
2Reliability
If wireless power transmission systems transmit communication power to all power reception apparatuses, then system reliability is maintained, but energy efficiency deteriorates
Solution Approach 1:
The patent applies dynamic power allocation where the transmission apparatus adjusts the power transmission mode (charging power vs. communication power only) based on real-time conditions of the reception apparatus. When the battery is fully charged or external power is available, the system dynamically switches to communication power only mode, reducing energy consumption while maintaining system reliability through continued communication capability.
3Measurement precision
If wireless power transmission systems determine charging status based on multiple parameters, then power allocation accuracy is improved, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by having the power reception apparatus proactively transmit information about its charging status (battery voltage, external power connection) to the transmission apparatus before power allocation decisions are made. This allows the transmission apparatus to accurately determine the appropriate power mode without requiring complex real-time monitoring and analysis of multiple parameters during operation, thus improving power allocation accuracy while managing system complexity.
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 approach reduces energy waste by selectively transmitting the required power, ensuring efficient operation and preventing battery overcharging, thereby enhancing the overall efficiency and reliability of wireless power transmission.
Implementation Method 1
Magnetic coupling or resonant coupling occurs between the source resonator and the target resonator
Implementation Method 2
Magnetic coupling or resonant coupling occurs between the source resonator and the target resonator
Data Source
AI summary
A method of operating a wireless power transmission apparatus includes receiving, from a wireless power reception apparatus, information on an operating power of a micro control unit (MCU) of the wireless power reception apparatus and information on an output of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus; determining whether a charging power is to be transmitted to the wireless power reception apparatus based on the received information on the output of DC/DC converter; and transmitting, to the wireless power reception apparatus, an MCU operating power calculated based on the received information on the operating power of the MCU in response to a determination that the charging power is not to be transmitted to the wireless power reception apparatus.