Wireless Power Transmitter Shared Mode Protocol
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Solution Overview
Problem
Existing wireless charging systems face inefficiencies in managing power transmission to multiple devices, particularly in adapting to new receivers without disrupting ongoing charges, and lack a standardized method for determining support for shared mode protocols.
Innovation Solution
A wireless power transmitter and receiver system that detects new receivers, determines appropriate coils, and adjusts transmission protocols using a shared mode protocol, where receivers support simultaneous power management through configuration packets and Frequency Shift Keying (FSK), allowing seamless integration of new devices without disrupting existing charges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power transmitter uses a traditional exclusive mode protocol to serve one power receiver at a time, then the power transmission stability is ensured, but the charging efficiency and adaptability to multiple devices deteriorate
Solution Approach 1:
The system dynamically switches between exclusive mode and shared mode protocols based on the number of detected power receivers. When only one receiver is present, exclusive mode provides stable dedicated service. When multiple receivers are detected, the system transitions to shared mode to enable simultaneous charging, thus adapting the operation mode to current conditions to maintain both stability and efficiency.
Solution Approach 2:
The system changes the operational parameter (protocol mode) from exclusive to shared based on the detected number of power receivers. This parameter change allows the system to optimize between stable single-device charging and efficient multi-device charging, resolving the contradiction between reliability and productivity.
2Adaptability or versatility
If the power transmitter detects and serves a new power receiver immediately, then the adaptability and responsiveness are improved, but the ongoing power transmission to existing receivers may be disrupted
Solution Approach 1:
The system performs preliminary detection of power receivers before initiating power transmission. When a new receiver is detected during ongoing charging, the system uses the shared mode protocol to preliminarily establish communication and coordination mechanisms that allow the new device to be integrated without disrupting existing power flow, thus maintaining both adaptability and reliability.
Solution Approach 2:
The shared mode protocol acts as an intermediary mechanism that manages multiple power receivers simultaneously. It coordinates power distribution and communication among multiple devices, allowing new receivers to be added to the charging session without disrupting ongoing transmissions to existing receivers.
3Adaptability or versatility
If the power transmitter uses multiple coils for flexible power transmission, then the adaptability to different receiver positions is improved, but the device complexity increases
Solution Approach 1:
The power transmitter is divided into multiple independent coils, each capable of serving power receivers at different positions. This segmentation allows flexible adaptation to various device placements while the shared mode protocol simplifies the management complexity by providing a unified control mechanism for coordinating multiple coils and receivers.
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 efficient and flexible power transmission to multiple devices by effectively incorporating new receivers into the charging process without disturbing ongoing charges, improving charging efficiency and adaptability.
Implementation Method 1
In the electromagnetic induction method, a power transmission unit generates a magnetic field through a power transmission coil (i.e., a primary coil), and a power reception coil (i.e., a secondary coil) is placed at the location where an electric current may be induced so that power is transferred.
Implementation Method 2
In the resonant method, energy is transmitted using a resonant phenomenon between the transmission coil and the reception coil. In this case, a system is configured so that the primary coil and the secondary coil have the same resonant frequency, and resonant mode energy coupling between the transmission and reception coils is used.
Data Source
AI summary
A method in which a power transmitter comprising multi coils transmits wireless power, includes detecting a second power receiver while transmitting power to a first power receiver, determining at least one primary coil appropriate for power transmission, determining whether the second power receiver supports a shared mode protocol using the determined at least one primary coil, and transmitting, if the second power receiver supports a shared mode protocol, power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol is a protocol that simultaneously manages information exchange between the power transmitter and a plurality of power receivers.