Wireless Power Receiver Communication for Stable Bluetooth Charging
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Solution Overview
Problem
Existing wireless power transfer systems face challenges in maintaining compatibility and stability when using out-of-band communication, particularly with Bluetooth, due to the lack of standardized protocols for power transmission and reception.
Innovation Solution
Implementing a wireless power receiver and transmitter that utilize both in-band and Bluetooth communication using an operating frequency, with a data transport stream that includes Auxiliary Data Control (ADC) and Auxiliary Data Transport (ADT) packets to exchange application-level messages, ensuring stable and compatible power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Bluetooth communication is used for out-of-band communication between wireless power transmitter and receiver, then communication flexibility and device compatibility are improved, but communication stability and power transfer reliability deteriorate due to lack of standardized protocols
Solution Approach 1:
The patent applies parameter changes by defining specific Bluetooth packet structures and communication protocols that standardize the exchange of power control parameters, device capability information, and status data. This standardization transforms the variable and unreliable Bluetooth communication into a stable channel by establishing fixed parameter formats, timing sequences, and error handling mechanisms, thereby resolving the contradiction between flexibility and reliability.
2Reliability
If both in-band and Bluetooth communication are used simultaneously, then communication robustness is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the communication functions into distinct modules: in-band communication handles power control and real-time status exchange, while Bluetooth communication manages device pairing, capability negotiation, and configuration. This functional segmentation allows each communication channel to be optimized independently and simplifies the overall system architecture by clearly defining the role and protocol of each channel, thereby reducing system complexity while maintaining robustness.
3Reliability
If standardized communication protocols are implemented for Bluetooth out-of-band communication, then power transfer stability is improved, but implementation complexity and development time increase
Solution Approach 1:
The patent applies universality by designing a standardized Bluetooth communication protocol that can be universally applied across different wireless power transmission and reception devices. The protocol defines common data structures, message formats, and interaction sequences that work across various device types and manufacturers. This universal standardization reduces implementation complexity by providing a ready-to-use framework that developers can adopt without creating device-specific protocols, thereby improving ease of manufacture while ensuring power transfer 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 approach enhances the stability and compatibility of wireless power transfer by enabling effective communication and control between wireless power transmitters and receivers, reducing the risk of overvoltage and ensuring seamless power transfer across different devices.
Implementation Method 1
a power pickup configured to receive the wireless power from the wireless power transmitter by magnetic coupling with the wireless power transmitter at an operating frequency
Data Source
AI summary
A wireless power reception device according to one embodiment of the present specification uses Bluetooth communication and/or in-band communication using an operating frequency of the wireless power, so as to communicate with a wireless power transmission device and control the reception of wireless power, and exchanges an application level message with the wireless power transmission device by using a data transmission stream that includes an auxiliary data control data packet (ADC) and an auxiliary data transport data packet (ADT), wherein the ADT includes a header and a message field, and the message field includes a data field including at least a part of the application level message and a length field including information related to the size of the data field.