Wireless Power Transmitter Multi-Standard Compatibility
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Solution Overview
Problem
Current wireless charging technologies are limited by their inability to charge devices using different wireless charging standards, preventing interoperability between devices supporting A4WP and WPC standards.
Innovation Solution
A wireless power transmitting apparatus that transmits a long beacon signal and determines the impedance change of a transmitting coil to identify compatible devices, allowing power transmission according to either the A4WP or WPC standard based on response signals and impedance changes, enabling charging across different standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wireless power transmitting apparatus uses a specific wireless charging standard (A4WP or WPC), then the power transmission reliability is improved, but the adaptability to devices using different standards deteriorates
Solution Approach 1:
The wireless power transmitting apparatus is designed to support multiple wireless charging standards (A4WP and WPC) within a single system. The controller can identify which standard a target device uses and switch between corresponding transmission methods, making the apparatus universally compatible with devices using different standards while maintaining reliable power transmission for each standard
Solution Approach 2:
The apparatus changes operational parameters based on the detected wireless charging standard. When a device using A4WP standard is detected, the system adjusts to A4WP-specific parameters including using separate short-range wireless communication signals. When a WPC standard device is detected, it switches to WPC parameters without requiring separate communication signals. This dynamic parameter adjustment enables compatibility across standards while maintaining transmission reliability
2Productivity
If the apparatus transmits power without verifying device compatibility, then the productivity is improved, but the reliability of power transmission deteriorates
Solution Approach 1:
The apparatus performs preliminary detection of the target device's wireless charging standard before initiating power transmission. The controller identifies whether the device uses A4WP or WPC standard and prepares the appropriate transmission parameters in advance. This preliminary action ensures that power transmission starts with correct settings, maintaining both high productivity and reliability without requiring mid-transmission adjustments
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 wireless power transmission between devices supporting different standards, ensuring compatibility and convenience in charging electronic devices.
Implementation Method 1
transmitting a long beacon signal via a transmitting coil
Implementation Method 2
determining whether or not a degree of change in a level of impedance of the transmitting coil is within a reference range
Data Source
AI summary
A wireless power transmitting method performed in a wireless power transmitting apparatus includes transmitting a long beacon signal via a transmitting coil; determining whether or not a response signal to the long beacon signal has been received at a wireless communicator; determining whether or not a degree of change in a level of impedance of the transmitting coil is within a reference range responsive to the determination that the response signal is not received; and wirelessly transmitting the power responsive to the determination: that the response signal has been received or that the degree of change is within the reference range.