Wireless Power Authentication Data Stream for Stable Charging
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Solution Overview
Problem
Existing wireless power transfer systems lack a secure method for mutual authentication between wireless power transmitting and receiving devices, which can lead to instability and reliability issues, especially during high-power charging.
Innovation Solution
The implementation of an apparatus and method for performing data stream transmission in a wireless power transfer system, which includes a power conversion unit for forming magnetic coupling and a communication/control unit for controlling power transmission and performing high-level data transport. This unit transmits a data stream with an auxiliary data control packet indicating the start and end of the data stream, ensuring secure authentication and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transfer is implemented without mutual authentication, then power transmission can proceed quickly and simply, but system reliability and stability deteriorate due to security risks and unauthorized devices
Solution Approach 1:
The patent implements mutual authentication between the wireless power transmitter and receiver before power transfer begins. The authentication process verifies device identities and establishes secure communication channels in advance, ensuring that only authorized devices can participate in power transfer. This preliminary security measure prevents unauthorized access and ensures system reliability without interfering with the subsequent power transfer efficiency.
2Reliability
If data stream transmission is added for authentication purposes, then security and stability improve, but communication complexity and processing overhead increase
Solution Approach 1:
The patent utilizes the existing communication channel between transmitter and receiver for multiple purposes: both for controlling power transfer and for authentication. The data stream transmitted during the power transfer process carries both control commands and authentication information. This multi-functional use of the communication channel achieves secure authentication without requiring separate dedicated communication paths, thereby maintaining communication efficiency while enhancing security and charging stability.
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
The proposed solution enables secure mutual authentication between wireless power devices, ensuring stability and reliability during wireless charging, even at high power levels, by clearly defining essential elements for authentication and data transmission.
Implementation Method 1
a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver
Implementation Method 2
transmits a data stream with an auxiliary data control packet indicating the start and end of the data stream, ensuring secure authentication and stability
Data Source
AI summary
A wireless power transmitter, a wireless power receiver and related methods are discussed. The wireless power transmitter can include a power converter configured to transfer wireless power to a wireless power receiver, and a controller configured to communicate with the wireless power receiver to control transmission of the wireless power. The controller is configured to receive, from the wireless power receiver, an authentication request message for authentication of the wireless power transmitter. The controller is configured to transmit, to the wireless power receiver, a data stream including a plurality of auxiliary data transport data packets in which at least a part of an authentication response message is divided. The data stream includes at a beginning an auxiliary data control packet informing a start of the data stream.