Wireless Power Transmitter Controller for Subsequent Device Detection
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Solution Overview
Problem
Wireless power transfer systems face challenges in adjusting transmit power levels to accommodate various receiving units, leading to insufficient power for subsequent devices joining the charging system, as the initial power level may be too high for one unit but insufficient for others.
Innovation Solution
A wireless power transmitter with a controller that detects subsequent chargeable devices and adjusts the current from a first level to a default level prior to communication, ensuring sufficient power is provided to all devices within the charging region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the transmit power level is adjusted to provide sufficient power to one or more chargeable devices, then power sufficiency for initial devices is improved, but subsequent devices joining the charging region may receive insufficient power
Solution Approach 1:
The system dynamically adjusts the transmit power level based on the presence and requirements of chargeable devices. When a subsequent device is detected, the controller modifies the current level from the first level to an adjusted level, enabling the system to adapt to changing conditions and accommodate multiple devices with different power requirements.
Solution Approach 2:
The controller monitors the charging region for subsequent chargeable devices and uses this feedback to determine when to adjust the transmit power level. This feedback mechanism allows the system to respond to the presence of new devices and modify power delivery accordingly, ensuring adequate power supply to all devices in the charging region.
2Adaptability or versatility
If the transmit power level is set high to accommodate all possible devices, then adaptability to various devices is improved, but power efficiency and energy waste increase
Solution Approach 1:
Instead of maintaining a constantly high power level, the system dynamically adjusts the transmit power based on actual device presence and requirements. The controller modifies the current level from the first level to an adjusted level only when subsequent devices are detected, thereby maintaining adaptability while minimizing energy waste during periods when fewer devices are charging.
Solution Approach 2:
The system changes the operating parameter (current level) from the first level to an adjusted level based on the detected configuration of chargeable devices. This parameter adjustment allows the system to optimize power delivery efficiency by matching the transmit power level to the actual power requirements of the devices currently in the charging region.
3Adaptability or versatility
If the current level is adjusted frequently to accommodate different device configurations, then adaptability to device variations is improved, but system complexity and control overhead increase
Solution Approach 1:
The controller automatically detects subsequent chargeable devices and autonomously determines when to modify the current level from the first level to an adjusted level. This self-service approach simplifies the control process by eliminating the need for manual intervention or complex external control systems, thereby reducing overall system complexity while maintaining high adaptability to different device configurations.
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 that all chargeable devices, including those with smaller receive coils or in less favorable locations, can boot and communicate effectively, negotiating a favorable power level for efficient charging.
Implementation Method 1
a power transmitting element configured to use a current at a first level to wirelessly transmit power
Data Source
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AI summary
An apparatus and method for transmission of wireless power to a plurality of chargeable devices. The apparatus and method include and provide for a wireless power transmitter including a power transmitting element configured to use a current at a first level to wirelessly transmit power sufficient to provide power to one or more chargeable devices positioned within a charging region. The apparatus and method further include and provide for a controller to detect a subsequent chargeable device positioned within the charging region and to adjust the current from the first level to a default level prior to communication with the subsequent chargeable device.