Wireless Power Reception Apparatus with Dynamic Switching
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Solution Overview
Problem
Conventional wireless power transmission systems face inefficiencies in short distance wireless power transfer due to impedance mismatching and require separate power for data transmission, which reduces power transfer efficiency and complicates the system design.
Innovation Solution
A wireless power and data reception apparatus that uses capacitors connected to an inductor or power output unit via switches, with a switch controller managing charging and transfer times to avoid overlap, allowing for efficient power transfer and data demodulation based on stored power levels, enabling simultaneous wireless power and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional wireless power transmission systems are used for short distance power transfer, then power can be transmitted wirelessly, but impedance mismatching occurs which reduces transmission efficiency
Solution Approach 1:
The patent combines power transmission and data transmission into a single wireless channel. The power receiver extracts both power and data from the received signal, eliminating the need for separate power and data transmission systems. This merging approach resolves the impedance matching problem by using a unified transmission path while maintaining high efficiency through resonant coupling between transmitter and receiver coils.
Solution Approach 2:
The transmitted signal serves multiple functions simultaneously: it carries both power energy and data information. The power receiver is designed to perform both power extraction and data demodulation from the same received signal, making the system multi-functional and eliminating the need for separate impedance matching circuits for different transmission purposes.
2Loss of information
If separate power is used for data transmission in wireless power systems, then data can be transmitted, but power transfer efficiency decreases and system design becomes complicated
Solution Approach 1:
The system merges data transmission with power transmission by modulating data onto the power transmission signal. The power receiver extracts both the power energy and the modulated data from the same received electromagnetic field, eliminating the need for separate data transmission power sources and maintaining high power transfer efficiency.
Solution Approach 2:
The transmitted electromagnetic signal performs dual functions: transferring power energy and carrying data information. The receiver is designed to simultaneously perform power extraction and data demodulation, making the system universally capable of both functions without requiring separate transmission channels or power sources.
3Adaptability or versatility
If switches connect capacitors to inductor during charging time and to power output unit during transfer time, then simultaneous power and data transmission is enabled, but system complexity increases
Solution Approach 1:
The system uses dynamic switching to change the configuration of capacitors between charging mode (connected to inductor) and transfer mode (connected to power output unit). This dynamic reconfiguration allows the same hardware components to serve different functions at different times, enabling simultaneous power and data transmission without requiring completely separate dedicated circuits for each function.
Solution Approach 2:
The switches operate in periodic cycles, alternating between charging time (connecting capacitors to inductor for energy storage) and transfer time (connecting capacitors to power output unit for power delivery). This periodic switching enables the system to efficiently manage power flow and data transmission in a time-multiplexed manner, achieving versatile functionality with controlled 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 maintains transmission efficiency even with impedance changes and allows for simultaneous power and data transfer without the need for impedance matching, enhancing the overall efficiency and simplicity of the system.
Implementation Method 1
charging one or more capacitors by receiving wireless power and modulated first data using a target resonator
Implementation Method 2
An operation principle of the short distance wireless power transmission corresponds to a scheme of generating a magnetic field using the transmission coil at a given operating frequency, and of transferring stored energy to the generated magnetic field by generating an induced current in the reception coil. Wireless power transmission technologies may use a resonance characteristic of radio frequency elements.
Data Source
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AI summary
Provided are an apparatus and a method for simultaneously transmitting and receiving a wireless power and data. A wireless power and data reception apparatus may include a receiver configured to charge one or more capacitors by receiving wireless power and modulated first data using a target resonator, a switch controller configured to control one or more switches corresponding to the one or more capacitors to charge the one or more capacitors or to transfer a power charged in the one or more capacitors and demodulated first data to a target device, and a demodulator configured to demodulate the modulated first data based on a power amount stored in the one or more capacitors.