Out-of-Band Wireless Charging Communication for Profile Compatibility
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Solution Overview
Problem
Existing wireless power transfer systems face challenges in maintaining compatibility between different power profiles, leading to issues such as unstable charging in continuous power transfer methods and potential overvoltage damage in non-continuous power transfer scenarios, which complicates the user experience and infrastructure establishment.
Innovation Solution
The implementation of out-of-band communication methods, specifically using Bluetooth Low Energy (BLE) and other near-field communication protocols, to establish a negotiation phase for power transfer settings, ensuring compatible operation between wireless power transmitters and receivers across various power profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transfer systems use different power profiles (continuous and non-continuous methods), then power transfer flexibility is improved, but system compatibility and stability deteriorate due to communication confusion and conflict between transmitter and receiver
Solution Approach 1:
The patent introduces a packet structure with specific fields (ID field, configuration field, capability field) that acts as an intermediary communication protocol between transmitter and receiver. This standardized packet format mediates the negotiation process, allowing different power profiles to be communicated clearly without confusion or conflict, thereby resolving the compatibility issue while maintaining flexibility
2Adaptability or versatility
If wireless power transfer systems support multiple power profiles, then adaptability is improved, but device complexity increases due to negotiation phase requirements
Solution Approach 1:
The negotiation process is segmented into distinct packet fields: ID field for identification, configuration field for power profile settings, and capability field for supported methods. This segmentation organizes the complex negotiation information into manageable, structured components that are easier to process and implement
Solution Approach 2:
The patent uses parameter-based configuration where power transfer characteristics are defined by specific fields in the packet (ID, configuration, capability). By changing these parameters rather than redesigning the entire communication protocol, the system can adapt to different power profiles efficiently with minimal complexity increase
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 stable power transfer and user-friendly experiences by ensuring compatible operation between different power profiles, preventing overvoltage issues and enhancing the reliability of wireless charging across diverse devices and applications.
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 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 3
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
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AI summary
The present disclosure provides a method for wireless power transmission by a wireless power transmitter in a wireless power transmission system, and a device using same, the method comprising: receiving a configuration packet from a wireless power receiver in a configuration phase, wherein the configuration packet related to the wireless power receiver includes information about whether a function of out-of-band communication is supported or not; and transmitting or receiving a specific packet related to the out-of-band communication in a negotiation phase, wherein the specific packet includes information for reporting an operation executed in the out-of-band communication.