Wireless Power Communication Resonance Control

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Solution Overview

Problem

Conventional wireless power transmission systems face limitations in efficiently transmitting power over distances and maintaining communication between resonators due to issues with impedance matching and energy transfer efficiency, particularly in near-field wireless power transmission.

Innovation Solution

A communication device and system using wireless power that incorporates a controller for managing mutual resonance between source and target resonators, including energy adjusters to optimize energy transfer and demodulators to decode information based on energy variations, allowing for efficient energy delivery and communication through mutual resonance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If conventional wireless power transmission is used, then power can be transmitted wirelessly, but energy transfer efficiency deteriorates over distance

Engineering Contradiction:

Improveenergy transfer efficiencyVSAvoidtransmission distance

Core Design Contradiction:

Loss of energyVSLength of stationary object

Solution Approach 1:

The patent applies resonance principles where the source resonator and target resonator are tuned to the same resonant frequency, creating strong coupling that enables efficient energy transfer over extended distances. The resonant oscillation creates a sustained energy exchange mechanism that overcomes conventional near-field limitations.

Inventive Principle:

Principle #18Mechanical vibration

Solution Approach 2:

The system dynamically adjusts operating parameters including resonant frequency matching, coupling coefficient, and quality factor (Q) to optimize energy transfer efficiency at different transmission distances. By changing these parameters, the system maintains high efficiency whether resonators are closely spaced or separated by larger distances.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If mutual resonance is used for power transmission, then wireless power transfer is enabled, but communication reliability deteriorates due to impedance matching issues

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidimpedance matching complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system incorporates feedback mechanisms where the target resonator communicates back to the source resonator about its energy reception status and resonance condition. This feedback enables the source to adjust its transmission parameters in real-time, maintaining reliable communication and power transfer even as impedance conditions change with distance or loading.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The resonators are designed to simultaneously perform both power transfer and communication functions. The same resonant coupling mechanism used for wireless power transmission also serves as the communication channel, eliminating the need for separate impedance matching circuits and reducing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Power

If energy is stored in target resonator through mutual resonance, then wireless power reception is achieved, but control over energy timing becomes difficult

Engineering Contradiction:

Improveenergy storage capabilityVSAvoidenergy transfer timing control

Core Design Contradiction:

PowerVSLoss of time

Solution Approach 1:

The system uses periodic modulation of the resonant coupling between source and target resonators. By periodically varying the coupling strength through controlled detuning or switching, the system can store energy in the target resonator during coupling phases and isolate it during decoupling phases, achieving precise timing control over energy transfer and storage.

Inventive Principle:

Principle #19Periodic action

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

Enhances energy transfer efficiency and communication reliability by optimizing mutual resonance and energy management, enabling effective power transmission and data exchange between resonators, even over longer distances and in varying resonance conditions.

Implementation Method 1

a source resonator and a target resonator that mutually resonate with each other

Methodology Applied

Scientific EffectMutual resonance: Resonance

Implementation Method 2

the controller controls a resonant frequency of the target resonator so that the target resonator and the source resonator mutually resonate

Methodology Applied

Scientific EffectResonance frequency matching: Resonance

Implementation Method 3

the energy adjuster adjusts a quality (Q) factor of the target resonator

Methodology Applied

Scientific EffectQuality factor adjustment: Resonance

Data Source

PatentUS10541729B2Communication system using wireless power

Publication Date: 2020.01.21 SAMSUNG ELECTRONICS CO LTD

AI summary

Provided are a devices, systems and methods for performing communication using wireless power. According to one general aspect, a communication device using wireless power may include: a controller configured to control mutual resonance between a target resonator and a source resonator; a demodulator configured to demodulate information transmitted from the source resonator based on an amount of energy received from the source resonator; and a modulator configured to modulate information based on the mutual resonance.