Capacitive Balun Resonator Wireless Power Transfer

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Solution Overview

Problem

Current wireless power transmission techniques are inefficient, particularly for radiative methods which waste power in free space and require line-of-sight and complex tracking mechanisms, while near-field methods are limited by short distance and small offset tolerances.

Innovation Solution

A wireless electric field power transmission system utilizing a transmitter with a capacitive balun and resonator, and a receiver with a capacitive balun and resonator, where electric field coupling enables efficient power transfer between the transmitter and receiver, allowing for resonant electric fields to facilitate power delivery and extraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If radiative wireless energy transfer is used, then power can be transmitted over distance, but transfer efficiency deteriorates because most power is radiated in directions away from the receiver

Engineering Contradiction:

Improvetransmission distanceVSAvoidpower transfer efficiency

Core Design Contradiction:

Length of stationary objectVSLoss of energy

Solution Approach 1:

The patent applies local quality by creating a concentrated electromagnetic energy pathway between transmitter and receiver using reflective surfaces and directional coupling. The energy is not uniformly radiated in all directions but is locally confined and guided along a specific path, improving efficiency while maintaining transmission distance.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent introduces intermediary reflective surfaces and coupling structures that mediate the energy transfer between transmitter and receiver. These intermediaries redirect and concentrate the radiated energy toward the receiver, reducing loss while enabling distance transmission.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of energy

If directional antennas are used to confine and direct energy beam towards receiver, then power transfer efficiency is improved, but device complexity increases due to tracking and steering mechanisms

Engineering Contradiction:

Improvepower transfer efficiencyVSAvoidtracking and steering mechanisms

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent segments the directional control function into multiple fixed reflective surfaces rather than requiring a single steerable antenna. Each surface is stationary and performs a specific reflection function, collectively achieving directional energy confinement without moving parts or complex tracking mechanisms.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of steering the transmitter beam dynamically, the patent inverts the approach by using fixed reflective surfaces to guide the energy path. The directionality is achieved through the geometry of stationary reflectors rather than active beam steering, simplifying the system while maintaining efficiency.

Inventive Principle:

Principle #13The other way round (Inversion)

3Loss of energy

If traditional induction method is used, then power can be transmitted wirelessly, but transmission distance is limited to very short ranges

Engineering Contradiction:

Improvepower transfer efficiencyVSAvoidtransmission distance

Core Design Contradiction:

Loss of energyVSLength of stationary object

Solution Approach 1:

The patent changes the operating parameters by using resonant frequency coupling and electromagnetic radiation rather than traditional low-frequency induction. This parameter change enables the system to operate at higher frequencies with longer wavelengths, extending the effective transmission distance while maintaining reasonable efficiency through resonant coupling between transmitter and receiver.

Inventive Principle:

Principle #35Parameter changes

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

This solution enhances power transfer efficiency, reduces the need for line-of-sight and complex tracking, and allows for longer-distance power transmission with improved safety by using capacitive baluns and resonators to resonate and generate electric fields for effective power delivery.

Implementation Method 1

via electric field coupling: the transmit capacitive balun is configured to transfer power to the transmit resonator

Methodology Applied

Scientific EffectElectric field coupling: Electric Field

Implementation Method 2

the transmit resonator is configured to transfer power to the receive resonator, and the receive capacitive balun is configured to extract power from the receive resonator

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS10033225B2Wireless electric field power transmission system, transmitter and receiver therefor and method of wirelessly transferring power

Publication Date: 2018.07.24 SOLACE POWER INC

AI summary

A wireless electric field power transmission system comprises a transmitter comprising a transmit resonator and a transmit capacitive balun, and at least one receiver comprising a receive resonator and a receive capacitive balun. The transmit capacitive balun is configured to transfer power to the transmitter resonator, the transmit resonator is configured to transfer the power to the receive resonator, and the receive resonator is configured to extract the power to the receive capacitive balun via electric field coupling.