Wireless Power Receiver Modulating Electromagnetic Field
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Solution Overview
Problem
Current wireless charging systems require precise alignment of transmitter and receiver coils, limiting ease of use and compatibility with devices of different power and voltage requirements, and operating with various wireless charging protocols.
Innovation Solution
A system that modulates the phase and amplitude of an electromagnetic field in multiple dimensions for wireless power transfer, allowing for positioning freedom and compatibility with multiple devices and protocols, using a base with a receiver capable of detecting and operating under various power and communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If transmitter and receiver coils are aligned for efficient wireless power transfer, then power transfer efficiency is improved, but positioning freedom and ease of operation deteriorate
Solution Approach 1:
The system divides the wireless power transfer into two independent stages: electromagnetic field generation by the transmitter, and field modulation by the receiver. This segmentation allows each component to be optimized independently - the transmitter for efficient field generation and the receiver for adaptive field modulation based on positioning, thereby resolving the contradiction between power transfer efficiency and positioning freedom
Solution Approach 2:
The receiver incorporates dynamic field modulation capability that adapts to different positioning conditions. By dynamically adjusting the received electromagnetic field based on its position relative to the transmitter, the system maintains efficient power transfer across a broader range of positions, thus improving positioning freedom without sacrificing efficiency
2Reliability
If wireless charging system is designed for specific protocol compatibility, then reliability for that protocol is improved, but adaptability to multiple protocols deteriorates
Solution Approach 1:
The system implements universal field modulation capability at the receiver end that can work with multiple wireless power transfer protocols. By designing the receiver to modulate electromagnetic fields in a protocol-agnostic manner, the system achieves reliable power transfer across different protocols (Qi, AirFuel, etc.) without requiring protocol-specific hardware, thus resolving the contradiction between reliability and adaptability
3Volume of moving object
If transmitter coil size is reduced for compact design, then device size is improved, but power transfer efficiency and coverage area deteriorate
Solution Approach 1:
The system compensates for reduced transmitter coil size by utilizing three-dimensional electromagnetic field modulation at the receiver end. The receiver can adjust the field in multiple dimensions (amplitude, phase, spatial distribution) to maximize power transfer efficiency from a compact transmitter, thereby maintaining efficiency despite reduced transmitter volume
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 efficient and versatile wireless power transfer to multiple devices with different power and voltage requirements, improving ease of use and compatibility across various protocols, with reduced alignment constraints and increased efficiency.
Implementation Method 1
modulating the phase and amplitude of an electromagnetic field in one or multiple (e.g. one, two or three) dimensions
Data Source
AI summary
A system is descried for use in wireless charging or wireless powering. The system includes a base for wirelessly charging and/or wirelessly powering and a receiver capable of receiving electricity wirelessly from the base. The receiver is associated with a battery and/or device. The base and/or the receiver is capable of detecting and operating under a plurality of power protocols and/or a plurality of communicating protocols, thereby allowing the base to transfer electricity wirelessly to the battery and/or device in a manner consistent with a common communication and/or common power protocol shared between the base and the receiver.