Wireless Power Authentication Packets for Stable High-Power Charging
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Solution Overview
Problem
The existing wireless power transfer systems face challenges in ensuring stability and reliability, particularly during high-power charging, due to the presence of non-authenticated products that do not adhere to technical standards, posing safety risks. These systems lack effective mechanisms for mutual authentication between wireless power transmitting and receiving devices.
Innovation Solution
The implementation of a wireless power transfer system that includes a power conversion unit for forming magnetic coupling and a communication/control unit to transmit data streams with auxiliary control packets, ensuring authentication and stability through mutual authentication protocols, even during high-power charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transfer systems allow non-authenticated products to operate, then device compatibility and ease of operation are improved, but system reliability and safety deteriorate due to lack of authentication
Solution Approach 1:
The patent implements authentication procedures that occur before the wireless power transfer begins. The transmitting and receiving devices perform mutual authentication to verify their identities and capabilities prior to establishing the power transfer connection, ensuring that only authenticated devices can operate in the system while maintaining ease of use through automated verification processes
2Reliability
If mutual authentication protocols are implemented between wireless power devices, then system reliability and stability are improved, but device complexity increases due to additional authentication mechanisms
Solution Approach 1:
The patent employs universal authentication protocols that can be implemented across different wireless power transfer devices and standards. The authentication mechanism uses standardized data packet formats and communication protocols that work across multiple device types, reducing individual device complexity while maintaining system-wide reliability through consistent verification procedures
3Productivity
If data stream transmission is performed during high-power wireless charging, then productivity and charging speed are improved, but system stability deteriorates due to interference between power and data channels
Solution Approach 1:
The patent segments the wireless communication into separate data transmission and power transfer channels. By dividing the communication protocol into distinct phases where data packets are transmitted separately from the high-power transfer phase, the system maintains productivity through efficient data exchange while preserving stability by preventing interference between power and data channels
Solution Approach 2:
The patent implements periodic alternation between data transmission phases and power transfer phases. The system periodically switches between transmitting control data packets and delivering high-power energy, allowing both functions to operate effectively without mutual interference, thus maintaining both charging speed and system 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
This solution enables secure and reliable wireless power transfer by establishing a format for wireless charging certificates, indicating authentication support, and managing timing between authentication procedures and charging phases, thus ensuring stability and reliability even during high-power operations.
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
a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform high level data transport
Data Source
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AI summary
Provided are a device and method for performing authentication in a wireless power transfer system. Provided is an authentication method in a wireless power transfer system including receiving a first packet including indication information on whether a target device supports an authentication function from the target device; transmitting, when the target device supports an authentication function, an authentication request message to the target device; receiving an authentication response message including a certificate on wireless charging from the target device in response to the authentication request message; and confirming authentication of the target device based on the authentication response message.