Wireless Power Charging Voltage Adaptation for Frequency Shifts
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Solution Overview
Problem
Existing wireless power transmission technologies face limitations in power control due to specified frequency and duty control ranges, which restrict efficient power transmission and charging safety, especially at varying operating frequencies and recognition distances between devices.
Innovation Solution
An electronic device with a power supply unit, antenna module, magnetic field controller circuit, and processor that identifies operating frequencies and adjusts the operating voltage within specified ranges to enhance power transmission efficiency and widen the charging recognition area, thereby securing charging safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed operating voltage is used for wireless power transmission, then the device structure is simple and easy to control, but the power transmission efficiency is limited and cannot be optimized across different operating frequencies
Solution Approach 1:
The patent implements dynamic voltage adjustment by transitioning from a fixed operating voltage to a variable voltage system that adapts to different operating frequencies. The processor dynamically selects operating voltages from multiple available voltages based on the detected operating frequency, enabling the system to optimize power transmission efficiency across different frequency conditions while maintaining manageable control complexity through algorithmic decision-making.
Solution Approach 2:
The patent changes the operating voltage parameter based on the operating frequency to optimize power transmission. By establishing a correspondence between operating frequencies and operating voltages, the system adjusts the voltage parameter dynamically according to the detected frequency, thereby improving power transmission efficiency without significantly increasing device complexity.
2Productivity
If the operating voltage is adjusted frequently to optimize power transmission, then the power transmission efficiency increases, but the device complexity and control difficulty increase
Solution Approach 1:
The patent applies preliminary action by pre-establishing a correspondence relationship between operating frequencies and operating voltages before actual power transmission begins. The processor stores multiple operating voltages and their corresponding frequency ranges in advance, allowing for quick and simple voltage selection during operation without requiring complex real-time calculations or frequent adjustments, thus reducing control difficulty while maintaining high efficiency.
3Reliability
If a specified frequency range is used for wireless power transmission, then the transmission is stable and reliable, but the charging recognition area is limited and cannot accommodate varying recognition distances between devices
Solution Approach 1:
The patent implements dynamic adaptation by allowing the system to adjust operating voltages based on detected operating frequencies that may fall outside the standard specified range. This dynamic adjustment enables the system to maintain stable and reliable power transmission across varying recognition distances and frequencies by optimizing the voltage for each detected frequency condition, thereby expanding the charging recognition area while preserving transmission reliability.
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
The adaptive operating voltage approach increases power transmission efficiency and ensures reliable charging across different recognition distances by dynamically adjusting voltage based on identified frequencies, improving both efficiency and safety.
Implementation Method 1
a magnetic induction-based wireless power transmission system uses a magnetic field induced in a coil to transmit power. Energy is supplied to a load by allowing an induced current to flow in a reception coil using a magnetic field generated from a current flowing in a transmission coil.
Implementation Method 2
a magnetic resonance-based wireless power transmission system transmits and receives power using resonance between two coils having the same resonant frequency.
Data Source
AI summary
According to various embodiments, an electronic device comprises: a power supply unit comprising a power supply; an antenna module including at least one antenna; a magnetic field control circuit electrically connected to the antenna module; a charging circuit electrically connected to the power supply unit and the magnetic field control circuit; and at least one processor electrically connected to the magnetic field control circuit and the charging circuit, wherein the at least one processor may be configured to: identify an operating frequency through the magnetic field control circuit during the transmission of wireless power outside of the electronic device through the antenna module using power supplied from the power supply unit, identify whether the confirmed operating frequency is included in at least one operating voltage change frequency section within the designated operating frequency range, and change the operating voltage of the charging circuit based on the operating frequency being included in the at least one operating voltage change frequency section.