Non-Coplanar Coupled Inductor Wireless Power Transfer

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Solution Overview

Problem

Existing wireless power and data transfer systems using inductive coupling are inefficient, limited in maximum power transfer, generate excess heat, and can only charge one device at a time, often requiring precise co-planar orientations and wired connections.

Innovation Solution

The development of coupled inductor systems with non-coplanar primary coils and driver circuitry for wireless power transfer, enabling simultaneous charging of multiple devices in various orientations without physical connection, and incorporating data transmission functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If inductive coupling systems are used for wireless power transfer, then power can be transferred wirelessly, but power transfer efficiency is low and excess heat is generated

Engineering Contradiction:

Improvepower transfer efficiencyVSAvoidexcess heat

Core Design Contradiction:

Use of energy by moving objectVSObject-generated harmful factors

Solution Approach 1:

The system divides the power transfer function into multiple independent coil pairs, each capable of transferring power to different devices simultaneously. This segmentation allows distributed power delivery, reducing the energy loss and heat generation in any single transfer path while maintaining overall system efficiency

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coupled inductor system is designed to perform multiple functions: wireless power transfer to multiple devices simultaneously, data transmission, and adaptive power distribution. This multi-functionality consolidates what would otherwise require separate systems, improving overall energy utilization efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If traditional inductive resonance systems are used, then power transfer is possible, but only one device can be charged at a time

Engineering Contradiction:

Improvenumber of devices charged simultaneouslyVSAvoidcharging capability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system employs multiple primary coils and multiple secondary coils that can be independently activated. Each coil pair functions as an independent power transfer channel, enabling simultaneous charging of multiple devices without interfering with each other's operation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically configures which coil pairs are active based on the number and position of devices being charged. This dynamic adaptation allows the system to optimize power distribution across multiple devices simultaneously, enhancing both productivity and versatility

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If precise co-planar orientation is required for charging, then power transfer can be achieved, but ease of operation is reduced

Engineering Contradiction:

Improvecharging convenienceVSAvoidcoil orientation precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The coupled inductor system is designed to accommodate multiple device orientations and positions through its array of coil pairs. The system can transfer power to devices in various spatial configurations without requiring precise alignment, making operation much more convenient while maintaining reliable power transfer

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Ease of operation

If wired plugs are used for charging, then reliable power connection is achieved, but ease of operation is reduced

Engineering Contradiction:

Improvecharging convenienceVSAvoidpower connection reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system replaces the mechanical plug-and-socket connection with wireless inductive power transfer. Multiple coil pairs provide redundant wireless power paths, maintaining connection reliability without requiring physical contact, thereby significantly improving ease of operation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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, allows for convenient charging of multiple devices in different orientations, reduces costs, and improves data transmission capabilities, enabling flexible and efficient wireless power and data transfer.

Implementation Method 1

A variable current on a primary coil is used to create a varying magnetic field, and thus a voltage, in a secondary coil

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

Inductive coupling is an effect used to transfer electrical energy from one circuit to an adjacent circuit through inductive coils

Methodology Applied

Scientific EffectInductive coupling: Electromagnetic Induction

Data Source

PatentUS11309126B2Wireless power transmittal

Publication Date: 2022.04.19 TRIUNE SYST LLC

AI summary

Wireless power transmittal apparatus and systems are disclosed in which transmitter and receiver inductors, or coils, are coupled in configurations for wirelessly transferring power and/or data among them. In preferred implementations, a plurality of non-coplanar primary side coils are provided in power transmittal apparatus for transmitting power, or power and data.