Wireless Power ADT Negotiation for Stable Cross-Class Charging
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Solution Overview
Problem
Existing wireless power transfer systems face challenges in maintaining compatibility between wireless power transmitters and receivers of different power classes, leading to issues such as unstable charging and potential damage due to overvoltage, and there is a need for efficient data transmission methods to optimize power transfer protocols.
Innovation Solution
The implementation of a data transmission method where the wireless power transmitter receives request information from the receiver regarding auxiliary data transport (ADT) unit size and adjusts data transmission accordingly, enabling efficient power transfer by using in-band and out-of-band communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wireless power transmitter uses fixed data transmission protocols, then compatibility with different power classes is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements dynamic negotiation of ADT information unit sizes between transmitter and receiver. The receiver sends request information indicating desired unit sizes, and the transmitter adjusts its data transmission accordingly. This dynamic adaptation allows the system to optimize for different power classes and device requirements while maintaining compatibility across the board.
2Loss of time
If the wireless power transmitter transmits smaller units of ADT information, then data transmission time is reduced, but the complexity of data management increases
Solution Approach 1:
The patent segments auxiliary data transport information into smaller manageable units with configurable sizes. By dividing large data payloads into smaller ADT units that can be negotiated and transmitted incrementally, the system reduces overall transmission time while maintaining organized data management through structured unit handling.
3Productivity
If the wireless power system negotiates data unit sizes dynamically, then power transfer optimization is improved, but the negotiation phase complexity increases
Solution Approach 1:
The patent changes the parameter of data unit size from fixed to variable through negotiation. The receiver communicates its preferred ADT unit sizes to the transmitter during the negotiation phase, allowing the system to optimize power transfer efficiency for specific device requirements while managing complexity through standardized negotiation protocols.
Data Source
AI summary
Provided in the present disclosure are a method by which a wireless power transmitter transmits wireless power in a wireless power transmission system, and a device using same, the method comprising: establishing a power transmission contract with a wireless power receiver in a negotiation phase; and transmitting, to the wireless power receiver, wireless power on the basis of the power transmission contract in a power transmission phase, wherein: the wireless power transmitter receives request information from the wireless power receiver in the negotiation phase; the request information is information related to the unit size of at least one piece of auxiliary data transport (ADT) information transmitted by means of the wireless power transmitter; and the wireless power transmitter transmits, to the wireless power receiver, the at least one piece of ADT information in the power transmission phase on the basis of the information related to the unit size.