Wireless Power Repeater Verification for Expandable Charging
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Solution Overview
Problem
Existing wireless power transfer systems are costly and prone to interference due to the need for multiple antennas and driving circuitry, which also limits the expandability of the charging area.
Innovation Solution
A modular wireless power transmission system that uses repeaters to extend the charging area, eliminating the need for additional antennas and circuitry by using a magnetic sensor system to verify compatible repeaters and ensure efficient in-band communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple antennas and driving circuitry are used to power multiple devices simultaneously, then the charging area is expanded, but the system cost increases and interference problems occur
Solution Approach 1:
The patent introduces a repeater as an intermediary device that receives power signals from the original wireless power transmission system and re-transmits them to additional devices. This mediator approach allows the system to expand charging area without requiring multiple independent transmitters, thereby reducing overall system complexity and cost while maintaining reliable power delivery to multiple devices simultaneously.
2Adaptability or versatility
If additional antennas and circuitry are included for extended charging area, then more devices can be powered, but interference and cross-talk between antennas increases
Solution Approach 1:
The repeater acts as an intermediary that receives power signals from the original transmitter and re-transmits them to additional devices. This single-point transmission approach through the repeater eliminates the need for multiple independent antennas working in parallel, thereby reducing cross-talk and interference while maintaining the ability to power multiple devices simultaneously.
3Device complexity
If repeaters are used to extend charging area, then system cost is reduced, but verification of repeater compatibility is required
Solution Approach 1:
The patent employs magnetic sensors that detect the presence and properties of repeaters through magnetic field interactions. The system can identify compatible repeaters by detecting their magnetic signatures, providing a simple and reliable verification mechanism that ensures only authorized repeaters are integrated into the power transmission network, thereby maintaining system integrity without adding significant 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
The modular system allows for nearly unlimited expansion of the wireless power transmission area, enhances signal fidelity, and reduces costs by eliminating the need for additional circuitry and antennas, while maintaining stable and efficient communication.
Implementation Method 1
a magnetic sensor system to verify compatible repeaters
Implementation Method 2
Such systems often use inductive and/or resonant inductive wireless power transfer, which occurs when magnetic fields created by a transmitting element induce an electric field and, hence, an electric current, in a receiving element.
Implementation Method 3
Such systems often use inductive and/or resonant inductive wireless power transfer
Data Source
AI summary
A modular wireless power transfer system includes a first wireless transmission system and a wireless repeater system. The first wireless transmission system is configured to receive input power from an input power source, generate AC wireless signals, and couple with the wireless repeater system. A magnetic sensor system in the first wireless transmission system senses a magnet of specific strength in a specific location on the wireless repeater system. Based on the presence of absence of such a magnet, the first wireless transmission system allows or disallows, respectively, the transmission of the AC wireless signals to the wireless repeater system.