Wireless Power Transfer Position Verification

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Solution Overview

Problem

Existing wireless power transfer systems face challenges in appropriately controlling power supply to prevent overloading and power theft, especially in scenarios where the transmission and receiving devices are in different areas or have unauthorized access.

Innovation Solution

A wireless power transfer system that includes a transmission device with a position acquiring section to determine the location of the power receiving device and a control section to authorize power supply only within a preset area, optionally using authentication and employing multiple antennas or GPS for accurate positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless power transfer is enabled across larger distances and between different rooms, then power transfer versatility is improved, but the risk of overloading and power theft increases

Engineering Contradiction:

Improvepower transfer versatilityVSAvoidoverloading and power theft risk

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary actions by acquiring the position of the power receiving device before authorizing power supply. The control section checks whether the device is within the preset area and verifies authentication information in advance, only then enabling power transfer. This prevents overloading and power theft by ensuring proper authorization before power flow begins.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms by continuously monitoring the position of the power receiving device and validating authentication information. The control section uses this feedback to dynamically authorize or restrict power supply, ensuring that power transfer occurs only when the receiving device is in the designated area and properly authenticated, thus preventing overloading and unauthorized power access.

Inventive Principle:

Principle #23Feedback

2Ease of operation

If power supply is authorized without position verification, then ease of operation is improved, but power theft becomes possible

Engineering Contradiction:

Improvepower supply authorizationVSAvoidpower theft

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The system performs preliminary position verification and authentication checks before authorizing power supply. The position acquiring section determines the location of the receiving device, and the control section verifies both position and authentication information in advance, ensuring that power transfer is only authorized when proper conditions are met, thus preventing power theft while maintaining operational simplicity for authorized users.

Inventive Principle:

Principle #10Preliminary action

3Object-generated harmful factors

If power supply is restricted to preset areas only, then power theft prevention is improved, but device complexity increases

Engineering Contradiction:

Improvepower theft preventionVSAvoidcontrol system complexity

Core Design Contradiction:

Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements self-service mechanisms where the power receiving device automatically transmits its position information and authentication data. The transmission device autonomously performs position verification and authentication checks without requiring manual intervention, simplifying the user experience while maintaining robust security controls against power theft.

Inventive Principle:

Principle #25Self-service

4Object-generated harmful factors

If position verification and authentication are performed before power supply, then power theft prevention is improved, but power supply time is increased

Engineering Contradiction:

Improvepower theft preventionVSAvoidpower supply authorization time

Core Design Contradiction:

Object-generated harmful factorsVSLoss of time

Solution Approach 1:

The system performs preliminary position verification and authentication checks before authorizing power supply. The position acquiring section determines the location of the receiving device, and the control section verifies both position and authentication information in advance, ensuring that power transfer is only authorized when proper conditions are met. This streamlined preliminary verification process minimizes authorization time while maintaining robust security.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The power receiving device automatically transmits position information and authentication data, enabling the transmission device to perform verification checks without manual intervention. This automated self-service approach reduces the time required for authorization while ensuring thorough security validation, preventing power theft without significant delay to the power supply process.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS9571162B2Non-contact power supply system and non-contact power supply method

Publication Date: 2017.02.14 THE CHUGOKU ELECTRIC POWER CO INC

AI summary

A wireless power transfer system includes a transmission device that performs power supply by wireless power transfer to a power receiving device, a position acquiring section that acquires a current position of the power receiving device, and a control section that performs control to authorize the power supply in a case where the power receiving device is in a preset area and to not authorize the power supply in a case where the power receiving device is outside the preset area.