EV Charging Availability Control Using DTE Failure Feedback
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Solution Overview
Problem
Existing systems for providing charging station information to eco-friendly vehicles lack real-time updates, leading to difficulties in smooth charging and increased user discomfort when the distance to empty (DTE) is low, and can result in situations where vehicles are unable to travel.
Innovation Solution
A system and method that allow vehicles to determine changes in DTE and transmit failure reports to a server, which updates the charging station state information and informs users of unavailable stations, with the server changing the station's status based on repeated failure reports or changes in DTE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If charging station information is provided by installers, then charging station information can be provided to vehicles, but real-time updates cannot be provided due to cost limitations
Solution Approach 1:
The charging station itself performs self-diagnostics and automatically transmits its operational status to the server. The station's controller detects charging failures and sends failure report messages without requiring external monitoring systems, enabling real-time information updates while avoiding complex infrastructure
Solution Approach 2:
A feedback mechanism is established where the charging station continuously reports its operational status to the server, which then provides updated information to vehicles. The server receives failure report messages from charging stations and responds by updating charging station information, creating a closed-loop real-time information update system
2Reliability
If charging station information is not updated in real-time, then system complexity is reduced, but smooth charging cannot be ensured when distance to empty is low
Solution Approach 1:
The charging station autonomously monitors its own operational status and automatically transmits failure information to the server when charging problems occur. This self-diagnostic capability ensures reliable real-time information about charging availability without requiring complex external monitoring infrastructure
Solution Approach 2:
The system implements a feedback loop where charging station operational status is continuously communicated to the server, which then provides updated information to vehicles. This ensures vehicles receive accurate real-time charging availability information for reliable trip planning
3Loss of information
If the vehicle transmits failure report messages frequently, then real-time charging station status is improved, but communication overhead increases
Solution Approach 1:
The vehicle periodically checks the distance to empty and only transmits failure report messages when charging failures are detected or at scheduled intervals. This periodic monitoring approach ensures the server receives necessary status information while minimizing unnecessary communication and energy consumption
Data Source
AI summary
A system for controlling charging of a vehicle includes the vehicle that determines whether a distance to empty has changed based on the charging, and transmits a charging station failure report message upon concluding that there is no change in the distance to empty, and a server that receives the charging station failure report message, changes state information of a charging station where a failure has been reported, and informs that the charging station where the failure has been reported is unavailable.