Wireless Power Transfer Recalibration for Misalignment Detection
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Solution Overview
Problem
Existing wireless power transfer systems lack a method for determining appropriate control based on multiple state detection results between a power transmitting apparatus and a power receiving apparatus, leading to inefficiencies and potential issues like heat generation and foreign object detection.
Innovation Solution
A power transmitting apparatus equipped with a detection means for measuring physical quantities, a communication means for exchanging information with the receiving apparatus, and a control means for executing control based on multiple state detection results, including requests for additional measurements when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power transmitting apparatus executes control based on a single state detection result, then the control process is simple and fast, but the power transmission efficiency deteriorates and heat generation occurs due to insufficient accuracy in detecting foreign objects and positional deviations
Solution Approach 1:
The system performs a first state detection before power transmission begins, and then performs a second state detection after measurement process execution. This preliminary and sequential detection approach allows the system to make informed control decisions based on multiple detection results, improving detection accuracy without requiring all detections to occur simultaneously, thus managing complexity effectively.
Solution Approach 2:
The control means receives feedback from multiple state detection results (first and second detections) and adjusts the power transmission control accordingly. The system uses the measurement process results to determine appropriate control actions, creating a feedback loop that improves reliability by continuously monitoring and adjusting based on detected states.
2Loss of energy
If multiple state detection results are collected and processed, then power transmission efficiency improves and heat generation is prevented, but the control process becomes complex and information management becomes difficult
Solution Approach 1:
The system performs the first state detection in advance before power transmission, establishing a baseline measurement. This preliminary detection allows the system to prepare appropriate control strategies beforehand, reducing the need for complex real-time decision-making during power transmission and simplifying information management.
Solution Approach 2:
The state detection process is divided into distinct segments: a first state detection before power transmission and a second state detection after the measurement process. This segmentation allows the system to manage different detection results separately, making information processing more systematic and reducing the complexity of handling multiple simultaneous data streams.
3Measurement precision
If the measurement process is executed repeatedly based on power receiving apparatus requests, then the accuracy of state detection improves, but the time required for power transmission increases
Solution Approach 1:
The system executes the measurement process periodically - a first state detection is performed, then power transmission begins, and a second state detection is executed after a predetermined period. This periodic detection approach ensures measurement precision by capturing the state at multiple time points while managing the time loss by using predetermined intervals rather than continuous monitoring.
Solution Approach 2:
The first state detection is performed in advance before power transmission begins, allowing the system to prepare and initiate power transmission without waiting for additional measurements. This preliminary detection reduces the overall time required by establishing the baseline measurement beforehand, while subsequent detections are performed at predetermined intervals to maintain precision.
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 effective power transmission and reception control by utilizing multiple state detection results, enhancing efficiency and safety by addressing foreign object detection and positional deviations.
Implementation Method 1
a power transmitting means for wirelessly transferring power to a power receiving apparatus using a power transmitting antenna
Data Source
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AI summary
In order to execute power transmission control and power reception control on the basis of a plurality of state detection results related to a power transmitting apparatus and a power receiving apparatus, a wireless power transfer system comprises a power transmitting apparatus 100 and a power receiving apparatus 200. The power transmitting apparatus 100 wirelessly transfers power to the power receiving apparatus 200 by using a power transmitting antenna. The power transmitting apparatus 100 executes a calibration process that is based on measurement of a physical quantity and executes state detection using a measurement value. The power transmitting apparatus 100 determines whether to request execution of the calibration process again, using information acquired when the measurement process is executed through first state detection and information acquired when the measurement process is executed through second state detection later than the first state detection, and reports the determined information to the power receiving apparatus 200.