Wireless Power Transmitter Dynamic Configuration
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Solution Overview
Problem
Wireless power systems face challenges in efficiently transmitting power to information handling devices while preventing foreign object interference and managing thermal issues due to poor coupling and potential overheating.
Innovation Solution
The system establishes communication between a wireless power transmitting unit and receiving unit to exchange impedance and device-specific information, allowing for safe power regulation and thermal management by adjusting power transmission levels based on coupling efficiency and device characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless power transmission is performed without device-specific power configuration, then power can be transmitted to any device, but power transmission efficiency is poor and thermal issues occur due to poor coupling
Solution Approach 1:
The system dynamically adjusts power transmission parameters based on real-time coupling conditions and device characteristics. The PTU and PRU establish communication to exchange impedance information, and the system adapts the power transmission level according to the measured coupling efficiency, transforming a static power transmission system into a dynamic one that responds to changing conditions.
Solution Approach 2:
The system changes key transmission parameters including power level, frequency, and impedance based on device-specific information exchanged between PTU and PRU. By adjusting these parameters according to the receiving device's characteristics and coupling conditions, the system optimizes power transfer efficiency while preventing thermal issues.
2Productivity
If high power is transmitted to ensure adequate charging, then charging speed is improved, but thermal risks and foreign object interference increase
Solution Approach 1:
The system implements a feedback mechanism where the PRU communicates impedance information back to the PTU, which then adjusts the power transmission level accordingly. This closed-loop control allows the system to maintain optimal charging speed while preventing excessive power transmission that could cause thermal risks or interfere with foreign objects.
Solution Approach 2:
Instead of transmitting maximum power unconditionally, the system transmits only the necessary amount of power required for adequate charging based on real-time coupling conditions. This partial action approach prevents excessive power transmission that would lead to thermal issues while still achieving the required charging speed.
3Loss of energy
If generic power transmission is used without impedance matching, then system complexity is reduced, but power transmission efficiency deteriorates
Solution Approach 1:
The system employs a universal communication protocol between PTU and PRU that handles multiple functions including impedance information exchange, power level negotiation, and coupling condition assessment. This multi-functional approach achieves device-specific power configuration without proportionally increasing 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 ensures safe and efficient power transmission to information handling devices, minimizing foreign object interference and thermal risks, while maintaining compliance with safety regulations.
Implementation Method 1
A wireless power delivery system can include a wireless charging pad on to which the information handling system can be placed. The wireless power delivery system can then wirelessly transmit power to the device.
Implementation Method 2
A method includes establishing mutual communication between a wireless power transmitting unit (PTU) and a wireless power receiving unit (PRU); and receiving at the wireless PTU impedance range information from the wireless PRU.
Data Source
AI summary
A method includes establishing mutual communication between a wireless power transmitting unit (PTU) and a wireless power receiving unit (PRU), receiving at the wireless PTU an identifier corresponding to a device that includes the wireless PRU, and selecting a wireless PTU power transmission level based on the identifier.