Wireless Charging Segment Abnormality Detection via Multi-Vehicle Feedback
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Solution Overview
Problem
Existing charging systems for electrified vehicles require costly abnormality determination devices for each power supply segment, making it difficult to determine whether an abnormality is in the power supply segment or the vehicle itself, and lack reliability when only one vehicle detects an issue.
Innovation Solution
A charging system that includes a management device capable of receiving abnormality signals from multiple electrified vehicles, using identification information such as position or unique coil numbers to determine if an abnormality exists in the power supply segment, without the need for individual abnormality determination devices, by transmitting signals when a power difference exceeds a threshold or when no power is received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If abnormality determination devices are provided for each power supply segment, then the reliability of abnormality detection is improved, but the system cost increases
Solution Approach 1:
The electrified vehicle serves multiple functions: it is both a power receiver and an abnormality detection device. By utilizing the vehicle's existing components (power receiving unit, controller) to perform detection functions, the patent eliminates the need for separate detection devices in each power supply segment, thereby reducing system cost while maintaining detection capability
Solution Approach 2:
The system uses the electrified vehicle itself to detect abnormalities in the power supply segment. The vehicle's controller monitors the power supply status and generates abnormality signals when issues are detected, allowing the system to self-diagnose without requiring external detection equipment in each segment
2Measurement precision
If abnormality determination devices are provided for each power supply segment, then the measurement precision of abnormality detection is improved, but the device complexity increases
Solution Approach 1:
The electrified vehicle is designed to perform multiple functions including power reception and abnormality detection. The vehicle's controller serves as both a control unit for power reception and a detection unit for identifying power supply abnormalities, thereby reducing the number of dedicated detection devices needed while maintaining detection precision
Solution Approach 2:
The detection function is merged with the power receiving function in the electrified vehicle. The controller that manages power reception also performs abnormality detection by monitoring power supply characteristics, combining multiple functions into a single integrated system rather than using separate dedicated devices
3Loss of time
If only one electrified vehicle detects an abnormality, then the response time is improved, but the reliability of determination deteriorates
Solution Approach 1:
The management device receives abnormality signals from electrified vehicles and uses this feedback to determine whether a power supply segment has an abnormality. By collecting signals from multiple vehicles and analyzing the frequency of abnormality reports, the system can reliably distinguish between isolated vehicle issues and actual power supply problems while maintaining timely response
Solution Approach 2:
The system requires multiple abnormality signals before confirming a power supply segment abnormality, which is an excessive action compared to responding to a single signal. This approach filters out false positives from individual vehicle issues while still enabling timely detection of genuine problems through the accumulation of multiple reports
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 configuration allows for reliable and cost-effective determination of power supply segment abnormalities, increasing the system's reliability by differentiating between vehicle and segment issues based on multiple vehicle feedback, and reduces the need for expensive sensors in each segment.
Implementation Method 1
Each of the plurality of power supply segments is configured to supply charging power to an electrified vehicle in proximity to the power supply segment in a non-contact manner
Data Source
AI summary
A charging system includes a charging device including a plurality of power supply segments and a management device. Each of the plurality of power supply segments is configured to supply charging power to an electrified vehicle in proximity to the power supply segment in a non-contact manner. The management device is configured to manage the charging device and communicate with the electrified vehicle. The management device is configured to, when the electrified vehicle detects an abnormality in power supply from the power supply segment, regarding any of the plurality of power supply segments, receive an abnormality signal including identification information corresponding to the power supply segment from the electrified vehicle. The management device is configured to, when receiving the abnormality signal from a plurality of the electrified vehicles regarding any of the plurality of power supply segments, determine that there is an abnormality in the power supply segment.