Wireless Power Receiver Wi-Fi Provisioning via Dual-Band Communication
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Solution Overview
Problem
Existing wireless power transfer systems do not efficiently share Wi-Fi network connection information between wireless power receivers, requiring manual entry of SSID and password for each device.
Innovation Solution
A method where a wireless power transmitter communicates with wireless power receivers using both in-band and out-band communication, allowing access information of a Wi-Fi network to be shared between receivers through the transmitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual entry of Wi-Fi SSID and password is required for each wireless power receiver, then network security is maintained through individual authentication, but user convenience and operation time are reduced
Solution Approach 1:
The wireless power transmitter performs preliminary actions by storing Wi-Fi network information (SSID and password) in advance. When a wireless power receiver is placed on the charging surface, the transmitter automatically transmits the stored network information to the receiver via communication circuitry, eliminating the need for manual entry and reducing configuration time.
Solution Approach 2:
The wireless power transmitter acts as an intermediary between the Wi-Fi network and the wireless power receiver. It receives and stores network credentials, then transmits them to the receiver during the power transfer process, facilitating automatic network connection without requiring direct user input or separate configuration steps.
2Ease of operation
If wireless power transmitter shares Wi-Fi network information with multiple receivers, then user convenience is improved through automatic connection, but network security may be compromised through information exposure
Solution Approach 1:
The wireless power transmitter serves as a secure intermediary that controls the distribution of Wi-Fi credentials. It stores network information centrally and selectively transmits it to authorized receivers during active power transfer sessions, maintaining security through controlled access rather than open broadcasting.
Solution Approach 2:
The system enables self-service automatic connection where the wireless power receiver automatically receives and uses the network credentials provided by the transmitter without requiring user intervention. This maintains convenience while the transmitter's controlled transmission protocol ensures security.
3Reliability
If both in-band and out-band communication are used for transmitting Wi-Fi information, then communication reliability is improved through multiple channels, but device complexity increases
Solution Approach 1:
The wireless power transmitter is designed with multi-functionality, incorporating both power transmission capabilities (via magnetic coupling coils) and communication capabilities (via integrated communication circuitry) in a single device. This universal design enables dual-mode communication without requiring separate dedicated systems, managing complexity through functional integration.
Solution Approach 2:
The system maintains continuous useful action by utilizing the power transfer magnetic field for both power transmission and data communication simultaneously. The in-band communication leverages the existing power transfer infrastructure, while out-band communication provides backup, ensuring continuous reliable operation without adding significant complexity.
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
Enables automatic connection to a Wi-Fi network when a wireless power receiver is placed within the operating volume of the wireless power transmitter, reducing user hassle and improving convenience.
Implementation Method 1
a power pickup circuit configured to receive a wireless power from a wireless power transmitter by magnetic coupling with the wireless power transmitter at an operating frequency
Implementation Method 2
convert an AC signal generated by the wireless power into a DC signal
Implementation Method 3
a communication/control circuit configured to communicate with the wireless power transmitter using an in-band communication using the operating frequency and an out-band communication using a frequency other than the operating frequency
Data Source
AI summary
A wireless power reception device according to an embodiment of the present specification comprises: a power pickup circuit configured to receive wireless power from a wireless power transmission device by magnetic coupling with the wireless power transmission device at an operating frequency, and convert an AC signal generated by the wireless power into a DC signal; and a communication/control circuit for communicating with the wireless power transmission device by using in-band communication using the operation frequency and out-band communication using a frequency other than the operation frequency, wherein the communication/control circuit transmits access information of a Wi-Fi network connected to the wireless power reception device, to the wireless power transmission device by using the out-band communication.