Wireless Power Transceiver Capacitor Switching Circuit
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Solution Overview
Problem
Electronic devices with power transceivers experience unintended signal values during wireless power transmission and require methods to modulate signals for efficient power transfer and reception.
Innovation Solution
Incorporating a power transceiver with capacitors and switches controlled by a circuit to manage signal paths and impedance, allowing for efficient wireless power transmission and reception by connecting or disconnecting capacitors from the ground terminal based on operational modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power transceiver includes analog elements for wireless power transmission, then wireless power transfer capability is achieved, but unintended signal values occur during operation
Solution Approach 1:
The patent extracts and removes the unintended signal components through filtering circuits. The filtering circuit is specifically designed to extract and eliminate the harmful unintended signal values generated by the analog elements in the power transceiver, thereby improving signal accuracy while maintaining wireless power transfer capability.
Solution Approach 2:
The patent introduces intermediary filtering circuits between the power transceiver components and the external environment. These filtering circuits act as mediators that allow the power transceiver to function with analog elements while blocking or reducing the propagation of unintended signal values, thus resolving the contradiction between achieving wireless power transfer and eliminating harmful signals.
2Adaptability or versatility
If a power transceiver transmits signals wirelessly during power acquisition, then communication capability is achieved, but signal modulation becomes complex
Solution Approach 1:
The patent implements a universal power transceiver design that can perform both wireless power acquisition and signal transmission functions using the same hardware components. The power transceiver is designed to operate in multiple modes (power receiving mode and communication mode), eliminating the need for separate dedicated circuits and thereby reducing overall system complexity while maintaining communication capability.
Solution Approach 2:
The patent utilizes parameter changes in the existing power transceiver components to achieve signal modulation for communication. By dynamically adjusting parameters such as frequency, amplitude, or impedance of the existing analog elements already present for power transfer, the system enables communication functionality without adding complex dedicated modulation circuits, thus reducing device 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 solution enables efficient wireless power transfer and reception by minimizing unintended signal values and modulating signals effectively, improving the radiated emission performance and communication efficiency between devices.
Implementation Method 1
a coil configured to transmit, by wireless, a signal for offering power to an external electronic device, or receive, by wireless, a signal for acquiring power from the external electronic device
Implementation Method 2
a first capacitor electrically connectable to the coil, a first switch configured to electrically connect, or disconnect, an end of the first capacitor to a ground terminal
Data Source
AI summary
An electronic device according to various embodiments may be configured to cause a control circuit to: control a first switch, a second switch, or a combination of the first switch and the second switch, in order to electrically connect a ground terminal to a first capacitor, a second capacitor, or a combination of the first capacitor and the second capacitor, while the electronic device operates in a first mode for providing power to a first external electronic device; control the first switch and the second switch in order to electrically disconnect the first capacitor and the second capacitor from the ground terminal, and control the third switch in order to control a path of an electrical signal which passes through the fourth capacitor, while the electronic device operates in a second mode for acquiring power from a second external electronic device.