Wireless Transfer Station Interference Detection
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Solution Overview
Problem
Wireless energy transfer systems face inefficiencies and safety risks due to foreign objects coupling with the magnetic field, leading to energy wastage and potential damage or safety threats from heat radiation.
Innovation Solution
Incorporating wireless transfer stations with power management modules and presence detectors to optimize energy transfer by adjusting alignment, distance, and frequency, and using shielding to minimize interference from foreign objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless energy transfer is performed using a transmitting coil and receiving coil, then energy can be transferred wirelessly over a distance, but foreign objects within the magnetic field can inadvertently couple with the field and receive energy causing wastage and safety risks
Solution Approach 1:
The system performs preliminary detection of foreign objects within the magnetic field before initiating full wireless energy transfer. The presence detector scans the area and identifies conductive objects that could inadvertently couple with the magnetic field, allowing the system to prevent or adjust energy transfer before significant energy wastage occurs
Solution Approach 2:
The power management module continuously monitors energy transfer parameters and receives feedback from the presence detector. When foreign objects are detected or when coupling efficiency drops indicating foreign object interference, the system adjusts or terminates energy transfer to prevent energy wastage, creating a closed-loop control system
2Ease of operation
If wireless energy transfer is performed using a transmitting coil and receiving coil, then energy can be transferred wirelessly over a distance, but foreign objects within the magnetic field can inadvertently couple with the field and radiate heat causing damage or safety threats
Solution Approach 1:
The presence detector performs preliminary scanning to identify foreign objects within the magnetic field before full power transfer begins. By detecting conductive objects in advance, the system can prevent or reduce energy transfer that would otherwise cause these objects to heat up and radiate harmful heat
Solution Approach 2:
The system continuously monitors for foreign objects and adjusts energy transfer parameters in real-time based on their presence. When foreign objects are detected, the power management module reduces or terminates energy transfer to prevent heat radiation, creating a safety feedback loop
3Loss of energy
If foreign object detection and interference detection are implemented, then energy wastage and safety risks can be reduced, but device complexity increases
Solution Approach 1:
The power management module serves multiple functions: it manages the wireless energy transfer process, monitors transfer efficiency, detects foreign objects, and controls safety parameters. By consolidating these functions into a single integrated module rather than separate components, the system reduces overall complexity while maintaining comprehensive detection and control capabilities
Solution Approach 2:
The presence detector is integrated with the wireless energy transfer system rather than being a separate standalone device. This merging allows the detection function to share resources with the energy transfer system, reducing overall system complexity while maintaining effective foreign object detection
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 energy transfer efficiency, reduces wastage, and ensures safety by dynamically adjusting energy transfer parameters and shielding the magnetic field from interfering objects.
Implementation Method 1
Wireless energy transfer occurs when a transmitting coil generates a magnetic field and a receiving coil is located within that field so that a current is induced at the receiving coil
Implementation Method 2
when a foreign object, such as an electrically conductive object, that is not part of the wireless energy transfer system is located within the magnetic field emitted from the transmission coil, the object can inadvertently couple with the magnetic field
Implementation Method 3
coupling of the foreign object with the magnetic field can also cause the foreign object to radiate the received energy in the form of heat
Data Source
AI summary
A technology for a wireless transfer station that is operable to detect interference during a wireless transfer of energy or data between wireless transfer stations. A transfer load on a wireless transfer coil of a wireless transfer station can be monitored during a wireless transfer of energy or data from the wireless transfer station to another wireless transfer station. A change in the transfer load that exceeds a threshold value can be detected. The wireless transfer of energy or data by the wireless transfer station can be adjusted using the wireless transfer coil based on the detected change in the transfer load.