Wireless Power Authentication Timeout for Stable High-Speed Charging

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Solution Overview

Problem

Existing wireless power transfer systems face challenges in maintaining compatibility and stability during authentication processes, leading to potential communication errors and delays, which can hinder high-speed charging and cause instability.

Innovation Solution

Implementing a data stream responder that transmits a response message within a first timeout period, setting the timeout based on ADT and DSR packet intervals and communication errors to prevent indefinite authentication delays and unauthenticated devices, ensuring timely authentication and stable communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If authentication messages are transmitted without a timeout period, then authentication can be completed, but communication errors cause indefinite delays and authentication failures

Engineering Contradiction:

Improveauthentication reliabilityVSAvoidauthentication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent introduces a timeout period parameter for authentication messages, changing the communication protocol parameter to include a time limit. This prevents indefinite delays caused by communication errors while ensuring authentication completes within a specified time frame, resolving the contradiction between reliability and time loss.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If wireless power transfer uses magnetic coupling methods, then power can be transmitted wirelessly, but communication instability and errors occur during authentication

Engineering Contradiction:

Improvewireless power transfer speedVSAvoidcommunication stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by establishing communication stability measures before power transfer begins. The timeout period and authentication completion criteria are set in advance to prevent communication errors from affecting the power transfer process, ensuring both high-speed charging and stable communication.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If authentication is performed without time constraints, then device compatibility can be verified, but high-speed charging cannot be achieved due to unauthenticated devices

Engineering Contradiction:

Improvedevice compatibilityVSAvoidcharging speed

Core Design Contradiction:

Adaptability or versatilityVSSpeed

Solution Approach 1:

The patent introduces dynamic time constraints for authentication, where the timeout period adjusts based on communication conditions. This allows sufficient time for compatibility verification while ensuring authentication completes within a timeframe that enables high-speed charging, balancing adaptability and speed.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12556043B2Method and device relating to time requirement for application message in wireless power transmission system

Publication Date: 2026.02.17 LG ELECTRONICS INC

AI summary

The present disclosure relates to a method for transmitting a response message in a wireless power transmission system, the method being performed by a data stream responder, wherein the data stream responder enters a power transfer phase related to transferring or receiving wireless power, and transmits a response message to a data stream initiator in the power transfer phase. The response message is transmitted within a first time out period. A value of the first time out period is configured on the basis of an ADT packet of 1 byte, a time interval related to a DSR packet, and a communication error.