Wireless Charging Profile Negotiation for High Power Mode
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Solution Overview
Problem
Existing wireless power transfer systems lack the ability to dynamically adjust charging profiles based on the capabilities of the wireless power transmitter and receiver, limiting the potential for fast charging and efficient power utilization.
Innovation Solution
A method is introduced where a wireless power receiver transmits a Configuration (CFG) packet to a transmitter, enters a negotiation phase, and determines whether to enter a high power mode or a Baseline/Extended Power Profile mode based on product and model information, enabling the expansion of fast charging profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless power transfer systems use fixed charging profiles (Baseline Power Profile or Extended Power Profile), then system compatibility is maintained, but charging speed and power transfer efficiency are limited
Solution Approach 1:
The patent implements dynamic charging profiles that can switch between Baseline Power Profile, Extended Power Profile, and High Power Mode based on real-time negotiation between transmitter and receiver. The system dynamically adjusts power delivery parameters including voltage, current, and power levels during the charging process, allowing optimal charging speed while maintaining compatibility through standardized negotiation protocols.
Solution Approach 2:
The patent changes key power delivery parameters (voltage, current, power level) based on device capabilities and charging conditions. The receiver transmits capability information including supported voltage ranges and current limits, and the transmitter adjusts delivery parameters accordingly, enabling faster charging when conditions permit while maintaining safety and compatibility constraints.
2Productivity
If wireless power transfer systems enable high power mode for all devices, then charging efficiency is maximized, but device compatibility and safety are compromised
Solution Approach 1:
The patent performs preliminary capability exchange during the configuration phase before power delivery begins. The receiver transmits its power acceptance capabilities, voltage ranges, and current limits in advance, allowing the transmitter to determine the appropriate power profile (Baseline, Extended, or High Power Mode) before initiating high-power transfer, thus ensuring compatibility and safety are verified upfront.
Solution Approach 2:
The patent implements continuous feedback mechanisms where the receiver monitors received power levels and communicates status information back to the transmitter. The system can renegotiate power parameters during charging if conditions change, ensuring that high power mode is maintained only when device capabilities and safety constraints are satisfied, thereby balancing efficiency with reliability.
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 allows for dynamic adjustment of charging conditions, enhancing the efficiency and speed of power transfer by ensuring compatibility and optimal power utilization between 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
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AI summary
The present disclosure relates to a method for defining a profile for charging in a high power mode in a wireless power transmission system, wherein a wireless power receiver, in a power transfer phase, checks whether it is possible to enter a high power mode on the basis of product and model information of the wireless power receiver. When the wireless power receiver supports the high power mode, in the power transfer phase, the wireless power receiver enters the high power mode. When the wireless power receiver does not support the high power mode, in the power transfer phase, the wireless power receiver enters a BPP or EPP mode.