Wireless Power Transmitter Alignment Using Receiver Wave Feedback

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Solution Overview

Problem

Existing wireless power transmission systems require a power transmitter with communication functionality to improve transmission efficiency, limiting their effectiveness when such functionality is absent.

Innovation Solution

A wireless power transmission system that adjusts the position and orientation of the power transmitter's antenna to optimize power wave transmission efficiency without relying on communication functionality, using controllers to measure and adjust based on power wave strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the power transmitter has communication functionality to control antenna directivity, then transmission efficiency is improved, but device complexity increases

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidcommunication functionality

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The power transmitter measures the strength of power waves transmitted from the power receivers and uses this feedback to adjust the position and orientation of the receiving antenna. This closed-loop feedback mechanism enables the system to optimize transmission efficiency without requiring complex communication functionality between transmitter and receiver.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The power transmitter performs self-adjustment by measuring the received power wave strength and autonomously optimizing its antenna position and orientation. The system serves itself by using the transmitted power waves as both the power carrier and the measurement signal, eliminating the need for separate communication systems.

Inventive Principle:

Principle #25Self-service

2Loss of energy

If the power transmitter adjusts position and orientation to optimize transmission, then transmission efficiency is improved, but ease of operation deteriorates

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidoperation simplicity

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

The patent replaces manual mechanical adjustment with an automated control system that uses electronic measurement of power wave strength to drive mechanical actuators. This substitution automates the optimization process, making the system easy to operate while maintaining high transmission efficiency.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The automated feedback control system continuously measures power wave strength and adjusts antenna position and orientation without user intervention. This eliminates the need for users to manually optimize settings, greatly simplifying operation while maintaining optimal transmission efficiency.

Inventive Principle:

Principle #23Feedback

3Loss of energy

If the power transmitter measures power wave strength for adjustment, then transmission efficiency is improved, but measurement precision requirements increase

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidpower wave strength measurement

Core Design Contradiction:

Loss of energyVSMeasurement precision

Solution Approach 1:

The patent introduces a receiving antenna as an intermediary element that converts the power wave strength into a measurable electrical signal. This intermediary enables the power transmitter to accurately measure the strength of transmitted power waves, providing the precision needed for effective optimization without overly complex measurement requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 power wave transmission efficiency by optimizing the position and orientation of the power transmitter's antenna, even when the transmitter lacks communication capabilities.

Implementation Method 1

an antenna receiving the power wave transmitted from the power receivers

Methodology Applied

Scientific EffectElectromagnetic wave propagation: Electromagnetic Induction

Data Source

PatentUS12587042B2Wireless power transmission system and wireless power transmission method with power wave-based adjustment mode

Publication Date: 2026.03.24 PANASONIC HOLDINGS CORP

AI summary

A wireless power transmission system and a wireless power transmission method are provided that, even if a power transmitter does not have a communication functionality, can improve a transmission efficiency of power waves transmitted from the power transmitter. The wireless power transmission system includes a power transmitter that transmits a power wave and one or more power receivers that receive the power wave, wherein the power transmitter includes a controller that measures a strength of a power wave transmitted from the power receivers by adjusting at least one of a position of the power transmitter and an orientation of an antenna receiving the power wave transmitted from the power receivers and transmits a power wave to the power receivers in accordance with at least one of the position of the power transmitter and the orientation of the antenna upon the measured strength of the power wave exceeding a predetermined value.