Wireless Docking Mat Position Detection and Power Activation
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Solution Overview
Problem
Existing wireless charging systems for electronic devices face inefficiencies in coupling between wireless power transmitting and receiving devices, which affects the efficiency of wireless charging.
Innovation Solution
A wireless docking mat with a controller and sensors that determine the location and orientation of an electronic device, establish communication, and activate a wireless power transmitting device only when the device is ready for charging, while also managing airflow for cooling through blowers and shutters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless power transmitting device and receiving device are coupled by inductance or capacitance, then wireless charging can be achieved, but coupling efficiency is insufficient
Solution Approach 1:
The patent employs sensors (optical, acoustic, or tactile) to dynamically detect the position and orientation of the electronic device on the docking mat. Based on this real-time feedback, the system dynamically adjusts the power transmission parameters to optimize coupling efficiency between the wireless power transmitting device and the receiving device, resolving the contradiction between achieving wireless power transfer and maintaining high coupling efficiency.
2Productivity
If the wireless power transmitting device is continuously activated, then power can be transmitted, but energy is wasted when the device is not ready for charging
Solution Approach 1:
The system performs preliminary detection using sensors to determine whether an electronic device is present and ready for charging before activating the wireless power transmitting device. This preliminary action prevents unnecessary power transmission and energy waste, while ensuring charging is immediately available when the device is placed on the docking mat.
Solution Approach 2:
The system uses sensors to continuously monitor the presence and state of the electronic device, providing feedback to the control logic. Based on this feedback, the wireless power transmitting device is activated only when needed, optimizing the balance between charging availability and energy consumption.
3Loss of energy
If sensors and control logic are added to determine device location and activate power transmission, then charging efficiency improves, but device complexity increases
Solution Approach 1:
The docking mat performs self-detection of device presence and position using integrated sensors, and automatically activates power transmission without requiring user intervention or complex external control systems. This self-service approach improves power transfer efficiency while minimizing the added complexity by using straightforward sensor-based detection and automatic control logic.
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
Enhances the efficiency of wireless charging by optimizing power transfer and cooling, allowing users to adjust device positioning for improved charging efficiency.
Implementation Method 1
Wireless charging platforms for electronic devices typically incorporate a wireless power transmitting device which may be coupled, either by inductance or by capacitance, to a wireless power receiving device in an electronic device.
Data Source
AI summary
In one example a docking mat for an electronic device comprises a first major surface on which the electronic device may be positioned, a wireless power transmitting device, and a controller comprising logic, at least partly including hardware logic, to determine a location of the electronic device on the first major surface of the docking mat, establish a communication connection with the electronic device, receive at least one charge parameter from the electronic device, and activate the wireless power transmitting device in response to a determination that the electronic device is positioned proximate the wireless power transmitting device and the at least one charge parameter indicates that the electronic device is in a condition to receive power from the wireless power transmitting device. Other examples may be described.