Wireless Power Transmitter Selective Charging via Variable Inductors
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Solution Overview
Problem
Existing wireless power transmission systems cannot selectively charge only a portion of multiple wireless power receivers based on user requests or authentication, leading to inefficient power distribution.
Innovation Solution
A wireless power transmitter system that includes a standard resonator with dedicated variable inductors and capacitors, along with a controlling unit to dynamically adjust resonance frequencies and authenticate receivers, allowing for selective power transmission to specific receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single wireless power transmitter charges multiple wireless power receivers simultaneously, then power supply capability is improved, but selective charging capability deteriorates
Solution Approach 1:
The patent segments the wireless power transmission by assigning different resonance frequencies to different receivers. The power transmitter transmits power at multiple distinct resonance frequencies simultaneously, allowing each authenticated receiver to selectively receive power at its specific frequency while ignoring others, thus enabling selective charging among multiple receivers
Solution Approach 2:
The patent dynamically adjusts the resonance frequency of the power transmitter based on authentication results and user requests. The controlling unit changes the transmission frequency in real-time to match the specific receiver that needs charging, enabling flexible and selective power distribution to different receivers as needed
2Adaptability or versatility
If wireless power transmission supports multiple receivers, then power distribution capability is improved, but power distribution efficiency deteriorates
Solution Approach 1:
The patent implements an authentication feedback mechanism where the power transmitter receives authentication information from receivers, verifies their identities, and determines which receivers should receive power. This feedback loop ensures that power is transmitted only to authorized receivers, preventing wasted energy on unauthorized devices and improving overall power distribution efficiency
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
Enables selective charging of authenticated wireless power receivers with unique resonance frequencies, improving power distribution efficiency and allowing for time-division charging schemes.
Implementation Method 1
The magnetic induction scheme according to a wireless power consortium (WPC) standard uses a frequency of 110 kHz to 205 kHz
Implementation Method 2
the magnetic resonance scheme according to an alliance for wireless power (A4WP) standard uses a frequency of 6.78 MHz
Data Source
AI summary
A wireless power transmitter includes a standard resonator including a standard inductor and a standard capacitor connected to the standard inductor in parallel, one or more dedicated variable inductors connected to the standard resonator in series and having inductance varied in response to a control voltage respectively applied to the dedicated variable inductors, one or more dedicated resonance capacitors connected to the dedicated variable inductors in parallel, respectively, and a controlling unit outputting the control voltage.