Wireless Power Profile Matching for Low-Coupling Overvoltage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transfer systems face challenges in maintaining compatibility between different power profiles, leading to unstable charging and potential damage to devices due to overvoltage issues when transferring power between wireless power transmitters and receivers with varying power capabilities.
Innovation Solution
The method involves transmitting information related to the coupling coefficient and power profile between the wireless power transmitter and receiver, allowing for variable control of maximum power based on the mutual coupling factor, enabling stable power transfer while preventing overvoltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transfer is performed without coupling coefficient information, then power transfer can proceed, but overvoltage issues occur causing device damage
Solution Approach 1:
The patent applies preliminary action by having the wireless power receiver transmit coupling coefficient information to the transmitter before power transfer begins. This advance information exchange allows the transmitter to pre-calculate appropriate power levels, preventing overvoltage damage without adding complex real-time control mechanisms.
Solution Approach 2:
The patent implements feedback by establishing a communication channel where the receiver provides coupling coefficient information back to the transmitter. This feedback loop enables the transmitter to adjust its output power according to the actual coupling conditions, ensuring safe and efficient power transfer.
2Productivity
If maximum power is transmitted without considering coupling coefficient, then power transfer speed increases, but unstable charging occurs
Solution Approach 1:
The patent applies dynamics by making the transmitted power variable rather than fixed at maximum levels. The transmitter dynamically adjusts power output based on the received coupling coefficient information, optimizing charging speed while maintaining stability through adaptive power control.
Solution Approach 2:
The patent implements parameter changes by using the coupling coefficient as a control parameter to adjust transmission power. By changing the power parameter according to the coupling conditions, the system achieves both high charging speed and stable operation.
3Adaptability or versatility
If power profiles are not matched between transmitter and receiver, then compatibility is maintained, but power transfer efficiency decreases
Solution Approach 1:
The patent applies universality by creating a standardized communication protocol that works across different power profiles. The coupling coefficient information exchange mechanism functions universally regardless of the specific power profile being used, enabling both compatibility and efficiency.
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 and safe power transfer by matching the power profiles, preventing device damage and enhancing user experience through compatible power management between wireless power transmitters and receivers.
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, performed by a wireless power receiver, for receiving wireless power in a wireless power transmission system, and an apparatus using the method, the method comprising: transmitting, to a wireless power transmitter, information related to a coupling coefficient between the wireless power transmitter and the wireless power receiver; transmitting information related to a power profile of the wireless power receiver to the wireless power transmitter, wherein the information related to the power profile indicates that the wireless power receiver supports a low-coupling power profile; and receiving the wireless power from the wireless power transmitter on the basis of a response to the information related to the power profile, wherein the low-coupling power profile is a power profile used on the basis of the coupling coefficient between the wireless power receiver and the wireless power transmitter being low.