Wireless Power Transfer with Bidirectional Discovery

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Solution Overview

Problem

Current wireless power transfer systems lack efficient methods for smart and autonomous charging of devices, particularly in managing power transfer based on device authorization, battery levels, and communication status, leading to inefficiencies and potential overcharging.

Innovation Solution

A wireless power transfer system with communication circuitry enabling devices to discover and authorize each other, manage power transfer based on battery levels, and provide status updates, allowing for conditional and efficient charging without explicit user requests.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If wireless power transfer is provided without explicit user request or authorization check, then charging convenience is improved, but device security and power management control deteriorate

Engineering Contradiction:

Improvecharging convenienceVSAvoiddevice security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary authorization checks and device discovery through communication circuitry before initiating power transfer. The powering device verifies the powered device's authorization status and communicates charging parameters in advance, ensuring security is established before convenience is provided.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements bidirectional communication between powering and powered devices to exchange status information, authorization tokens, and charging parameters. This feedback mechanism allows the system to maintain security control while providing automatic charging based on real-time device states.

Inventive Principle:

Principle #23Feedback

2Productivity

If continuous wireless power transfer is provided to all nearby devices, then charging availability is improved, but energy efficiency and power management deteriorate

Engineering Contradiction:

Improvecharging availabilityVSAvoidenergy efficiency

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The system provides differentiated power transfer based on individual device characteristics, authorization status, and battery needs. Each powered device receives power according to its specific requirements rather than uniform power distribution, optimizing energy efficiency while maintaining charging availability for authorized devices.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system activates power transfer selectively based on detected device needs, battery levels, and authorization status rather than continuous operation. Power transfer is initiated partially or fully depending on the specific charging requirements detected through communication circuitry, avoiding unnecessary energy consumption.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If wireless power transfer system includes communication circuitry and authorization databases, then device security and power management are improved, but system complexity increases

Engineering Contradiction:

Improvepower management controlVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The communication circuitry serves multiple functions including device discovery, authorization verification, status monitoring, and parameter negotiation. The authorization databases store and verify multiple types of information (device identifiers, authorization tokens, charging parameters) using a unified structure, reducing overall system complexity despite enhanced functionality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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, autonomous, and secure wireless charging by ensuring only authorized devices receive power, optimizing charging based on battery levels, and providing real-time status management, thus enhancing charging efficiency and device safety.

Implementation Method 1

a powering device uses transmission of electromagnetic waves to a powered device which then generates power from received electromagnetic waves

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

A known typical wireless power transfer system employs some kind of coupling techniques such as inductive coupling and capacitive coupling to provide an electric or magnetic filed between a powering device and a powered device

Methodology Applied

Scientific EffectInductive coupling: Electromagnetic Induction

Implementation Method 3

Methodology Applied

Scientific EffectCapacitive coupling: Capacitance

Data Source

PatentUS10790703B2Smart wireless power transfer between devices

Publication Date: 2020.09.29 KOJI IP LLC

AI summary

In an aspect, a wireless power transfer system includes at least one powering device and at least one powered device. Each powering device includes powering circuitry for wireless power transfer to the powered device. Each powered device includes powered circuitry for reception of the wireless power transfer from the powering device. The powering device may include communication circuitry for a close-range wireless communication with the powered device, while the powered device may also include communication circuitry for the close-range wireless communication with the powering device, so as for the powering device and the powered device to discover each other through the communication. The powering device and powered device may conditionally activate and deactivate the powering circuitry and powered circuitry, respectively, based on the discovery using the close-range wireless communication.