Wireless Power Authentication and Negotiated Power Control
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Solution Overview
Problem
Existing wireless power transmission systems lack effective device authentication mechanisms for AC adapters and cables, leading to potential overheating risks due to excessive power supply. Additionally, these systems struggle to maintain compatibility with older specifications and ensure safe power transmission when device authentication is not supported.
Innovation Solution
A wireless power transmission system that includes a power transmission apparatus and a power receiving apparatus, equipped with first and second authentication means for executing device authentication with the power supply apparatus and the power receiving apparatus respectively. The system also features negotiation means for adjusting transmission power based on the authentication results, ensuring safe and compatible power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device authentication is performed with power supply apparatus and power receiving apparatus, then safety and reliability of power transmission is improved, but device complexity increases
Solution Approach 1:
The authentication system is divided into two separate authentication modules: first authentication means for authenticating the power supply apparatus, and second authentication means for authenticating the power receiving apparatus. This segmentation allows each authentication module to be independently designed and managed, reducing overall system complexity while maintaining comprehensive safety through multi-device verification.
2Productivity
If transmission power is increased for higher power applications, then productivity is improved, but risk of overheating and safety issues increases
Solution Approach 1:
The negotiation means adjusts transmission power levels based on authentication results from both the power supply apparatus and power receiving apparatus. This feedback mechanism ensures that power transmission occurs only at safe levels determined through mutual authentication, preventing overheating while maximizing productive power transfer when conditions are verified as safe.
3Power
If new device authentication protocol is implemented for higher power, then power transmission capability is improved, but compatibility with older devices deteriorates
Solution Approach 1:
The authentication system is designed with universal compatibility in mind, where the negotiation means can handle both new and old authentication protocols. The system performs mutual authentication that adapts to different device types, allowing high-power transmission when both devices support the new protocol while maintaining functionality with older devices through fallback authentication mechanisms.
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 system effectively authenticates devices to prevent overheating and ensures safe wireless power transmission by adjusting power levels based on authentication results. It maintains compatibility with older specifications, allowing for seamless operation with devices that may not support advanced authentication protocols.
Implementation Method 1
a power transmission coil and a power receiving coil for wirelessly transmitting and receiving power
Data Source
AI summary
A power transmission apparatus that transmits power wirelessly to a power receiving apparatus by using power supplied from a power supply apparatus includes a first authentication unit configured to execute device authentication with the power supply apparatus, a second authentication unit configured to execute device authentication with the power receiving apparatus, and a control unit that performs negotiation related to transmission power with the power receiving apparatus based on a result of the device authentication by the first authentication unit and a result of the device authentication by the second authentication unit.