Wireless Power Capability Negotiation for Out-of-Band Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transfer systems lack a standardized method for out-of-band communication between wireless power transmitters and receivers, leading to compatibility issues and inefficient power transfer.
Innovation Solution
The implementation of a method where the wireless power transmitter transmits an extended capability packet during the negotiation phase, containing information about the supported communication methods, allowing the wireless power receiver to select a suitable communication method for the application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transfer systems use standardized communication protocols, then compatibility between transmitter and receiver is improved, but device complexity increases due to multiple communication method support
Solution Approach 1:
The system performs communication capability negotiation during the initialization phase before actual power transfer begins. The transmitter sends an extended capability packet containing supported communication methods (Bluetooth, WiFi, NFC), and the receiver selects an appropriate method in advance, avoiding compatibility issues during operation.
Solution Approach 2:
The wireless power transmitter is designed to support multiple communication methods (Bluetooth, WiFi, NFC) simultaneously, allowing it to adapt to different receiver types and application scenarios. This multi-functionality is achieved through integrated communication modules that can operate independently based on capability negotiation results.
2Loss of information
If extended capability packets are transmitted during negotiation phase, then communication method information is provided, but transmission time and processing overhead increase
Solution Approach 1:
The extended capability packet combining multiple communication method indicators (Bluetooth capability bit, WiFi capability bit, NFC capability bit) into a single transmission packet. This merging reduces the number of separate communication rounds needed and consolidates information exchange into one efficient negotiation step.
3Adaptability or versatility
If multiple communication methods are supported, then adaptability to different applications is improved, but energy consumption increases due to maintaining multiple communication modules
Solution Approach 1:
The communication module dynamically activates only the selected communication method after capability negotiation, rather than continuously operating all communication interfaces. The system transitions from a static multi-mode configuration to a dynamic single-active-mode operation, reducing energy consumption while maintaining adaptability.
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 enables seamless communication and power transfer by allowing the wireless power receiver to acquire information about the out-of-band methods supported by the transmitter and select the appropriate method, thereby enhancing compatibility and efficiency.
Implementation Method 1
The magnetic induction method corresponds to a method transmitting power by using electric currents that are induced to the coil of the receiver by a magnetic field, which is generated from a coil battery cell of the transmitter, in accordance with an electromagnetic coupling between a transmitting coil and a receiving coil.
Implementation Method 2
The magnetic resonance method is similar to the magnetic induction method in that is uses a magnetic field. However, the magnetic resonance method is different from the magnetic induction method in that energy is transmitted due to a concentration of magnetic fields on both a transmitting end and a receiving end, which is caused by the generated resonance.
Data Source
AI summary
The present disclosure provides a method for transmitting wireless power performed by a wireless power transmitter in a wireless power transmission system, and an apparatus using same, the method comprising: transmitting a capability packet for the wireless power transmitter to a wireless power receiver in a negotiation phase, wherein the capability packet includes information on whether out-of-band communication is supported; and transmitting an extended capability packet for the wireless power transmitter to the wireless power receiver in the negotiation phase, wherein the extended capability packet includes information about a communication method supported by the wireless power transmitter.