Wireless Power Transmitter Authentication Protocol
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Solution Overview
Problem
Current wireless charging technologies lack standardized methods for wireless power transmitter and receiver communication, frequency selection, power adjustment, and priority configuration, particularly in selecting an appropriate wireless power transmitter for a receiver, which hinders efficient and reliable wireless charging.
Innovation Solution
A wireless charging system that includes a wireless power transmitter and receiver with a predetermined communication scheme, using a power transmitting unit, controller, and communication unit to authenticate and communicate with each other, enabling bi-directional communication and controlling the charging process, including authentication, power transmission, and status reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless charging technology is implemented without standardized communication protocols, then wireless power transmission can be achieved, but system reliability and interoperability deteriorate due to lack of standardized methods for authentication, frequency selection, and power adjustment
Solution Approach 1:
The patent applies parameter changes by establishing standardized communication protocols that define specific parameters for authentication, frequency selection, and power adjustment. These standardized parameters enable reliable wireless charging operations while maintaining system interoperability across different devices and manufacturers.
2Ease of operation
If contact type charging terminals are exposed to the outside for easy connection, then charging operation is simplified, but contamination and moisture damage increase
Solution Approach 1:
The patent replaces the mechanical contact-based charging system with a wireless electromagnetic induction system. This substitution eliminates the need for exposed contact terminals, thereby preventing contamination and moisture damage while maintaining ease of operation through automatic authentication and connection protocols.
3Productivity
If wireless power transmission is performed without standardized authentication procedures, then charging speed is improved, but system security and power transmission stability deteriorate
Solution Approach 1:
The patent implements preliminary authentication procedures through standardized communication protocols before initiating power transmission. This preliminary action verifies device compatibility and authorization, ensuring secure and stable wireless charging operations while maintaining efficient power transfer speeds.
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 system ensures secure and efficient wireless power transmission by authenticating receivers, controlling charging functions, and optimizing power transfer, thereby improving the reliability and standardization of wireless charging processes.
Implementation Method 1
The electromagnetic induction-based power transmission method corresponds to a scheme of transmitting power between a primary coil and a secondary coil. If a magnet moves around a coil, an induced current may be generated. Based on this principle, a transmitter generates a magnetic field, and a current may be induced in a receiver due to a change in the magnetic field, creating energy.
Implementation Method 2
As for the resonance scheme, electricity is wirelessly transferred by using the resonance-based power transmission principle as a coupled mode theory even if an electronic device is apart from a charging device several meters. In the wireless charging system, electromagnetic waves containing electrical energy resonate, and the resonating electrical energy is directly transferred only to an electronic device having the resonant frequency.
Data Source
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AI summary
A control method for transmitting charging power to a wireless power receiver in a wireless power transmitter is provided. The control method includes receiving a Power Transmission Unit (PTU) searching signal for searching for a wireless power transmitter, from the wireless power receiver; obtaining information about an identifier of a signal in a communication scheme used by the wireless power receiver; and exchanging signals with the wireless power receiver based on the information about the identifier of the signal in the communication scheme used by the wireless power receiver.