Wireless Charging Efficiency via Dynamic Voltage and Frequency Adjustment
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Solution Overview
Problem
Current wireless charging technologies face inefficiencies in power transfer, leading to waste heat generation and reduced charging speeds due to fixed operating parameters, which do not adapt to changing power demands.
Innovation Solution
A method where a wireless charger and electronic device dynamically adjust operating parameters such as input and output voltages, and frequency to optimize power transfer efficiency by using charger profile data or incremental adjustments, ensuring high efficiency and low waste heat production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If fixed operating parameters are used for wireless charging, then device complexity is reduced, but power transfer efficiency deteriorates and waste heat increases
Solution Approach 1:
The patent implements dynamic adjustment of operating parameters (input voltage, output voltage, frequency) based on real-time power demand detection. The system transitions from fixed parameters to dynamically adaptable parameters, allowing the wireless charging system to optimize efficiency at different power levels by selecting appropriate voltage and frequency combinations.
Solution Approach 2:
The system changes physical operating parameters (voltage levels and frequency) to optimize power transfer efficiency. By adjusting input voltage to the transmitter, output voltage from the receiver, and operating frequency based on detected power demand, the system achieves higher efficiency across varying power requirements without requiring complex redesign.
2Productivity
If fixed operating parameters are used, then ease of operation is improved, but charging speed deteriorates due to waste heat generation
Solution Approach 1:
The system incorporates feedback mechanisms to detect power demand and adjust operating parameters accordingly. By monitoring the charging state and power requirements, the system dynamically modifies voltage and frequency settings to maintain optimal efficiency, thereby reducing waste heat generation and enabling faster charging speeds without thermal limitations.
3Loss of energy
If dynamic parameter adjustment is implemented, then power transfer efficiency is improved, but device complexity increases
Solution Approach 1:
The wireless charging system performs self-adjustment of operating parameters based on its own detected power demand. The system autonomously selects appropriate voltage and frequency combinations without requiring external control or complex coordination between transmitter and receiver, simplifying the overall control architecture while maintaining high efficiency.
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 enhances power transfer efficiency, reduces waste heat, and allows for faster charging by dynamically adjusting parameters based on power demand, improving overall charging performance.
Implementation Method 1
Energy can be transferred wirelessly using electromagnetic coupling between a power transmitter and a power receiver
Implementation Method 2
the electronic device includes a wireless power receiver including a wireless power receiving coil configured to receive power through inductive coupling with a wireless charger
Data Source
AI summary
Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for improving wireless charging. In some implementations, an electronic device determines a power demand of the electronic device. The electronic device includes a wireless power receiver including a wireless power receiving coil configured to receive power through inductive coupling with a wireless charge. The electronic device determines an operating voltage or operating frequency for the wireless charger based on the power demand of the electronic device. The electronic device sends, to the wireless charger, data indicating the operating voltage or operating frequency for the wireless charger.