Switchable Rectifier and Inverter Modes for Wider Output Voltage Range
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Solution Overview
Problem
The existing wireless charging technologies have a limited variable dynamic range of output voltage in rectifier and inverter circuits, restricting their adaptability to varying power requirements.
Innovation Solution
Incorporating a signal conversion unit and a switchable capacitor unit in rectifiers and inverters to switch between different rectification and inversion modes, such as voltage multiplier and full-bridge modes, to enhance the variable dynamic range of output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If full-bridge rectification mode is used, then the circuit structure is simple, but the output voltage variable dynamic range is small
Solution Approach 1:
The patent implements a dynamic rectifier circuit that can switch between different rectification modes (full-bridge and voltage multiplier) based on operating conditions. The circuit uses control signals to dynamically reconfigure the connection states of switching elements, transforming a static circuit into a dynamic one that adapts to different voltage requirements, thereby resolving the contradiction between structural simplicity and voltage range adaptability.
Solution Approach 2:
The patent changes the operating parameters of the rectifier circuit by switching between different rectification modes. By adjusting the connection configuration of the switching elements and capacitors, the circuit can operate in full-bridge mode for smaller voltage ranges or in voltage multiplier mode for larger voltage ranges, thus achieving parameter adaptability while maintaining reasonable circuit complexity.
2Adaptability or versatility
If voltage multiplier rectification mode is used, then the output voltage variable dynamic range is large, but the circuit structure becomes complex
Solution Approach 1:
The patent designs a universal rectifier circuit that can perform multiple functions through a single integrated structure. The same circuit components (switching elements, capacitors, and diodes) can operate in different configurations to achieve both full-bridge rectification and voltage multiplier rectification, eliminating the need for separate circuits for each mode and reducing overall system complexity.
Solution Approach 2:
The patent employs dynamic switching mechanisms that allow the circuit to reconfigure itself between different rectification modes. By using controlled switching elements that can change their connection states based on control signals, the circuit achieves multi-functionality without requiring permanently complex wiring, thus managing complexity through dynamic control rather than static structure.
3Stability of the object's composition
If fixed rectification mode is used, then the circuit is stable, but the adaptability to varying power requirements is limited
Solution Approach 1:
The patent transforms a fixed rectification circuit into a dynamic one by incorporating controllable switching elements. The circuit can maintain stable operation in a selected mode while also having the capability to transition between modes (full-bridge and voltage multiplier) to adapt to varying power requirements, thus achieving both stability and adaptability through controlled dynamics.
Solution Approach 2:
The patent implements control mechanisms that monitor the operating conditions and power requirements, then provide feedback to adjust the rectification mode accordingly. This feedback control ensures the circuit remains stable in its current operating state while adapting to changing requirements by switching modes when necessary, resolving the contradiction between stability and adaptability.
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 enhanced rectifiers and inverters can adjust their output voltage to meet specific power supply or receive coil requirements, improving adaptability and efficiency in wireless charging systems.
Implementation Method 1
a first unidirectional conduction semiconductor transistor, a second unidirectional conduction semiconductor transistor, a third unidirectional conduction semiconductor transistor, and a fourth unidirectional conduction semiconductor transistor
Implementation Method 2
The resonant circuit is configured to convert an electromagnetic signal obtained from a wireless charging transmitter
Implementation Method 3
The switchable capacitor unit is coupled to at least one of the first port and the third port, the second port, and the fourth port
Data Source
AI summary
This application provides a rectifier, an inverter, and a wireless charging device. The rectifier includes a signal conversion unit and a switchable capacitor unit that are mutually coupled. The switchable capacitor unit is configured to switch a rectification mode of the rectifier. The rectification mode may include but is not limited to any one of the following: a voltage multiplier rectification mode or a full-bridge rectification mode. Therefore, a variable dynamic range of an output voltage of the rectifier provided in embodiments of this application is large.