Wireless Charging Frequency Conversion for Interference Mitigation
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Solution Overview
Problem
Wireless charging devices face issues with smooth communication with electronic devices due to frequency interference from external power sources, leading to delayed connections and overcharging.
Innovation Solution
A wireless charging device with a charging circuit that communicates at a frequency within the electronic device's frequency band and a control circuit that converts frequencies based on the device's response to connection signals, ensuring stable power supply and preventing overcharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the wireless charging device uses the same frequency for communication as the external power source, then power transfer is efficient, but communication with the electronic device is interfered with
Solution Approach 1:
The patent divides the frequency usage into separate segments: the external power source operates at its original frequency for power transfer, while the wireless charging device uses a converted frequency for communication with the electronic device. This segmentation eliminates frequency interference between power transfer and communication functions.
Solution Approach 2:
The patent changes the frequency parameter of the wireless charging device through frequency conversion based on the external power source's frequency. By dynamically adjusting the communication frequency according to the power source frequency, the system avoids interference while maintaining efficient power transfer.
2Speed
If the wireless charging device transmits connection signals frequently to establish connection, then connection speed is improved, but current consumption increases
Solution Approach 1:
The patent performs frequency conversion in advance based on the external power source frequency before communication begins. This preliminary action ensures that the wireless charging device is ready to communicate at the correct frequency without needing to transmit multiple test signals, thus reducing current consumption while maintaining connection speed.
3Reliability
If frequency conversion is performed to avoid interference, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The control circuit is designed to perform multiple functions: it detects the external power source frequency, performs frequency conversion, and controls the charging operations. By making the control circuit universal and multi-functional, the patent minimizes additional hardware complexity while achieving reliable communication through frequency conversion.
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 smooth communication and stable power transfer to electronic devices without interfering with external power source frequencies, preventing overcharging and ensuring efficient charging.
Implementation Method 1
a charging circuit configured to communicate with the electronic device at a first frequency that is included in a frequency band of the electronic device
Implementation Method 2
a control circuit configured to convert the first frequency, based on a response of the electronic device to a first connection signal that is transmitted from the charging circuit to the electronic device
Data Source
AI summary
A wireless charging device in communication with an electronic device is provided. The wireless charging device includes a charging circuit configured to communicate with the electronic device at a first frequency that is included in a frequency band of the electronic device and supple power received from an external power source to the electronic device depending on a communication result at the first frequency, and a control circuit configured to convert the first frequency, based on a response of the electronic device to a first connection signal that is transmitted from the charging circuit to the electronic device.