Wireless Fast Charging Parameter Control Using Receiver Feedback
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Solution Overview
Problem
Existing wireless power transfer systems lack the ability to efficiently control and optimize power-related parameters for high-speed charging, leading to instability and suboptimal performance.
Innovation Solution
A wireless power receiver communicates with a transmitter using configuration packets to negotiate and authenticate, allowing for the transmission of additional status information and control messages to manage power-related parameters beyond traditional methods, enabling more complex and diverse charging control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional power control methods are used in wireless power transmission, then the system is simpler to implement, but the charging speed and performance are suboptimal
Solution Approach 1:
The power control process is divided into distinct phases: configuration phase for parameter negotiation, authentication phase for security verification, and power transfer phase for actual charging. This segmentation allows complex high-speed charging control to be broken down into manageable steps, improving charging performance while maintaining implementability.
Solution Approach 2:
The configuration phase performs preliminary actions by negotiating and establishing power-related parameters before the actual power transfer begins. This preliminary setup enables optimized high-speed charging during the power transfer phase without requiring complex real-time adjustments, thus improving charging speed while keeping the control system structure clear.
2Reliability
If additional status information and control messages are transmitted, then charging control becomes more precise and stable, but communication overhead increases
Solution Approach 1:
The system implements feedback mechanisms where the wireless power receiver sends status information (such as DSR/ACK, DSR/NAK, DSR/Not Defined) back to the transmitter to indicate charging stability. This feedback enables the transmitter to adjust power parameters dynamically, improving charging stability while managing communication overhead through structured response messages.
Solution Approach 2:
The configuration phase negotiates and establishes specific power-related parameters that optimize the power transfer process. By pre-defining these parameters based on device capabilities and charging requirements, the system achieves precise control and high stability without requiring continuous complex communication during power transfer.
3Productivity
If comprehensive hardware and parameter monitoring is implemented, then high-speed wireless charging can be enabled, but the system complexity increases
Solution Approach 1:
The wireless power receiver performs multiple functions: it acts as a power receiving device, a communication device for exchanging configuration packets and status messages, and a monitoring device for tracking charging parameters. This multi-functionality enables comprehensive monitoring for high-speed charging without requiring separate dedicated components, thus improving charging speed while controlling system 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
This approach enhances the stability and efficiency of high-speed wireless charging by monitoring and controlling hardware and parameters beyond power control, ensuring optimal charging conditions.
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
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AI summary
In a method, of the present specification, for controlling power-related parameters for fast charging in a wireless power transmission system, a wireless power receiver transmits, in a transmission phase, to a wireless power transmitter, a first request message for requesting state information about the wireless power transmitter. The wireless power receiver receives, from the wireless power transmitter, the state information about the wireless power transmitter. The wireless power receiver transmits, to the wireless power transmitter, a first response message for the state information about the wireless power transmitter. If the first response message is DSR/NCK, charging of the wireless power transmitter indicates an unstable state.