Wireless Charging Resonant Circuit for Stable ASK Communication
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Solution Overview
Problem
Existing wireless charging technologies face compatibility issues due to differences in rectifier circuit topologies, modulation modes, circuit parameters, operating frequencies, and control logic among various power transmitting terminal devices, leading to power signal distortion and interrupted charging.
Innovation Solution
The electronic device incorporates a resonant circuit with a resonant capacitor control circuit and a modulation circuit to adjust the capacitance value of the resonant and modulation capacitors, thereby improving ASK communication quality and enhancing compatibility with different power transmitting terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed capacitance value is used in the resonant circuit, then the circuit structure is simple, but ASK communication quality deteriorates due to power signal distortion
Solution Approach 1:
The patent applies dynamics by making the capacitance value adjustable rather than fixed. The resonant capacitor control circuit dynamically changes the capacitance value of the resonant capacitor based on different power transmitting terminal devices, allowing the resonant circuit to adapt to different operating conditions and maintain good ASK communication quality without excessive complexity.
Solution Approach 2:
The patent changes the parameter of capacitance value to resolve the contradiction. By adjusting the capacitance value of the resonant capacitor through the resonant capacitor control circuit, the system optimizes power signal characteristics and ASK communication quality for different power transmitting terminal devices, moving away from a fixed parameter approach.
2Reliability
If the capacitance value of the resonant capacitor is adjusted to improve ASK communication quality, then ASK communication quality improves, but the device complexity increases
Solution Approach 1:
The patent uses dynamics by implementing an adjustable resonant capacitor control circuit that can modify the capacitance value as needed. This dynamic adjustment capability improves ASK communication quality while keeping the overall circuit structure relatively simple through controlled adaptability rather than multiple fixed circuits.
Solution Approach 2:
The resonant capacitor control circuit serves multiple functions: it adjusts the capacitance value for different power transmitting terminal devices, optimizes power signal characteristics, and maintains ASK communication quality. This multi-functionality reduces the need for separate circuits for different scenarios, thereby limiting the increase in device complexity.
3Adaptability or versatility
If different rectifier circuit topologies are used for different power transmitting terminal devices, then compatibility improves, but device complexity increases
Solution Approach 1:
The patent changes parameters (capacitance value, operating frequency) rather than changing the entire rectifier circuit topology for different devices. By adjusting the resonant capacitor value and operating frequency through the control circuit, the system achieves compatibility with different power transmitting terminal devices while maintaining a unified circuit structure, thus limiting complexity increase.
Solution Approach 2:
The system uses dynamic parameter adjustment instead of multiple static circuit configurations. The resonant capacitor control circuit dynamically adapts the circuit characteristics to match different power transmitting terminal devices, providing versatility without requiring multiple fixed circuit topologies.
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 solution effectively improves the compatibility of the electronic device in wireless charging by enhancing ASK communication quality, reducing the likelihood of power signal distortion, and ensuring stable power transmission.
Implementation Method 1
The resonant circuit is configured to induce an alternating magnetic field sent by a power transmitting terminal device to generate an induced alternating current
Implementation Method 2
The resonant circuit includes a resonant inductor and a resonant capacitor control circuit connected in series to the resonant inductor
Data Source
AI summary
An electronic device and a control method for the electronic device are provided, and relate to the field of wireless charging technologies, to improve compatibility of a power receiving terminal device in wireless charging with a power transmitting terminal device by improving ASK communication quality. The electronic device includes a device circuit (50), a voltage conversion circuit (203), a rectifier circuit (202), a resonant circuit (201), and a modulation circuit (204). The resonant circuit (201) includes a resonant inductor (L2) and a resonant capacitor control circuit (ci1) connected in series to the resonant inductor (L2). A first end of the resonant inductor (L2) is coupled to the rectifier circuit (202), a second end of the resonant inductor (L2) is coupled to a first end of the resonant capacitor control circuit (ci1), and a second end of the resonant capacitor control circuit (ci1) is coupled to the rectifier circuit (202).