Wireless Power Receiver Circuit Without Multi-Stage Power Conversion
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Solution Overview
Problem
Existing wireless power receivers are limited by the number of components required for voltage and current conversion, hindering miniaturization and increasing manufacturing costs.
Innovation Solution
A wireless power receiver design that includes a diode connected to both ends of a resonance circuit and an inductive load, allowing for the input of alternating current, thereby eliminating the need for a rectifier circuit, capacitor, and DC/DC converter, reducing the number of components and enabling miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless power receiver includes a battery and uses received wireless power to charge the battery, then the wireless power receiver can store and supply power, but the wireless power receiver requires multiple conversion circuits (rectifier circuit, capacitor, DC/DC converter, charger) which increases device complexity and size
Solution Approach 1:
The patent extracts and removes the battery and its associated complex conversion circuits (rectifier circuit, capacitor, DC/DC converter, charger) from the wireless power receiver. Instead, it introduces a simplified configuration with only a resonance circuit, diode, and inductive load, thereby eliminating the need for multiple conversion circuits while maintaining the ability to receive and utilize wireless power.
Solution Approach 2:
The patent changes the operating parameters of the wireless power receiver from DC-based battery charging to AC-based inductive load operation. By using a resonance circuit tuned to the transmitter frequency and an inductive load that can operate with AC power, the system eliminates the need for rectification and DC-DC conversion, significantly reducing device complexity.
2Reliability
If a wireless power receiver includes multiple conversion circuits for voltage and current conversion, then the receiver can satisfy voltage and current conditions for power storage, but the receiver cannot be miniaturized and requires more elements for manufacture
Solution Approach 1:
The patent removes the battery and its associated conversion circuits (rectifier circuit, capacitor, DC/DC converter) from the wireless power receiver. The simplified design uses only a resonance circuit, diode, and inductive load, which dramatically reduces the volume and number of elements required for manufacture while maintaining the ability to receive and utilize wireless power.
3Adaptability or versatility
If a wireless power receiver uses a battery with multiple conversion circuits, then the receiver can charge and discharge power, but the manufacturing cost increases due to more elements
Solution Approach 1:
The patent extracts and eliminates the battery and its associated conversion circuits (rectifier circuit, capacitor, DC/DC converter, charger) from the wireless power receiver. The simplified configuration with only a resonance circuit, diode, and inductive load reduces the number of elements that need to be manufactured and assembled, thereby lowering manufacturing cost while maintaining power reception and utilization functionality.
4Reliability
If a wireless power receiver includes rectifier circuit, capacitor, DC/DC converter, and charger, then the receiver can convert wireless power to suitable voltage and current for battery charging, but the receiver structure becomes complex and difficult to manufacture
Solution Approach 1:
The patent removes the battery and its associated conversion circuits (rectifier circuit, capacitor, DC/DC converter, charger) from the wireless power receiver. Instead, it uses a resonance circuit configured to resonate at the transmitter frequency, a simple diode for rectification, and an inductive load that directly utilizes the rectified power, thereby eliminating the complex multi-stage conversion process and simplifying the overall receiver structure.
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 simplified design reduces the number of components, lowers manufacturing costs, and allows for miniaturization while maintaining functionality, particularly suitable for devices like grinders and blenders that operate on alternating current.
Implementation Method 1
a resonance circuit configured to generate an induced current based on a magnetic field generated by a wireless power transmitter
Implementation Method 2
Because the diode is capable of rectifying power generated from the resonance circuit
Data Source
AI summary
A wireless power receiver includes a resonance circuit configured to generate an induced current based on a magnetic field generated by a wireless power transmitter, a diode connected to a first end of the resonance circuit and to a second end of the resonance circuit, and an inductive load connected to a first end of the diode and a second end of the diode.