Wireless Power Receiver Communication Switching for Stable Charging
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Solution Overview
Problem
The challenge lies in effectively terminating out-of-band communication between wireless power receivers and transmitters to ensure stable and safe power transfer, particularly in scenarios where compatibility between different power profiles is not maintained.
Innovation Solution
A wireless power system that includes a communication/control circuit capable of switching to in-band communication using a power signal to terminate out-of-band communication, ensuring stable power transfer by maintaining compatibility between wireless power transmitters and receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If out-of-band communication is maintained between wireless power transmitter and receiver, then communication flexibility and device control capability are improved, but system stability and safety during power transfer deteriorate due to compatibility issues between different power profiles
Solution Approach 1:
The patent extracts and removes out-of-band communication functionality during power transfer operations to eliminate compatibility issues. The communication/control circuit is configured to terminate out-of-band communication when power transfer begins, separating the communication function from the power transfer function to ensure system stability while maintaining communication flexibility when needed.
Solution Approach 2:
The patent implements dynamic switching between in-band and out-of-band communication modes based on operational state. The system adaptively changes communication methodology: using out-of-band communication during device discovery and pairing phases, then switching to in-band communication during active power transfer to ensure compatibility and stability.
2Ease of operation
If out-of-band communication is used for device control, then ease of operation is improved, but risk of receiver damage increases due to protocol incompatibility
Solution Approach 1:
The patent introduces in-band communication as an intermediary mechanism that ensures protocol compatibility during power transfer. The communication/control circuit uses in-band communication as a safe intermediary channel that guarantees compatibility between transmitter and receiver, preventing protocol mismatches that could cause receiver damage while still allowing necessary control operations.
Solution Approach 2:
The patent applies preliminary anti-action by pre-configuring the communication/control circuit to terminate out-of-band communication before power transfer begins. This preventive measure eliminates the possibility of protocol incompatibility causing receiver damage, addressing the harmful effect before it can occur.
3Reliability
If in-band communication is used for power signal transmission, then power transfer stability is improved, but communication bandwidth and flexibility are reduced
Solution Approach 1:
The patent segments communication functions into different phases: out-of-band communication handles device discovery, pairing, and non-critical data exchange; in-band communication handles power transfer control and critical signaling. This segmentation allows the system to use bandwidth-efficient in-band communication during power transfer while preserving communication flexibility for other purposes.
Solution Approach 2:
The patent implements periodic switching between communication modes based on operational requirements. Out-of-band communication is activated during device pairing phases and deactivated during power transfer, then reactivated when power transfer completes. This periodic action maintains power transfer stability through in-band communication while preserving out-of-band communication capabilities when needed.
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 ensures stable power transfer by terminating out-of-band communication when necessary, reducing the risk of damage to receivers and enhancing user experience through compatible power transfer protocols.
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
A wireless power receiving device according to one embodiment of the present specification comprises: a power pickup circuit for receiving wireless power from a wireless power transmitting device; and a communication/control circuit for communicating with the wireless power transmitting device by using in-band communication using a power signal of the wireless power and/or out-band communication, which is wireless communication that differs from the in-band communication, and for controlling the reception of the wireless power, wherein the communication/control circuit terminates the connection of the out-band communication on the basis of the removal of the power signal from the wireless power transmitting device in a state in which the connection of the wireless power transmitting device and the out-band communication is established.