EV Charging Station Priority Scheduling for Waiting Time Balance
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Solution Overview
Problem
The long charging times and waiting times at electric vehicle charging stations prevent the widespread adoption of electric vehicles due to congestion and inefficiencies in resource allocation.
Innovation Solution
An electric vehicle charging station that classifies vehicles into high and low priority classes, dynamically schedules charging units based on user preferences, and simulates scenarios to optimize waiting times, allowing high-priority vehicles to receive faster service by paying a premium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If fast charging stations are increased to reduce waiting times, then charging speed is improved, but device complexity and infrastructure cost increase
Solution Approach 1:
The patent segments the charging station into multiple charging units (first charging unit, second charging unit, etc.) that can independently serve different vehicles. This segmentation allows parallel charging operations, reducing overall waiting time without requiring a single complex centralized system.
Solution Approach 2:
The patent implements dynamic priority assignment where vehicles can switch between high priority and low priority status based on real-time conditions. The controller dynamically adjusts which vehicle receives service at each charging unit, optimizing resource allocation and reducing waiting times adaptively.
2Ease of operation
If priority-based service is implemented to reduce waiting times for high-priority vehicles, then service quality is improved, but system complexity increases
Solution Approach 1:
The system performs preliminary classification of vehicles into high priority and low priority groups upon arrival. This preliminary action simplifies subsequent control decisions, as the priority status is determined in advance rather than requiring complex real-time arbitration.
Solution Approach 2:
The controller continuously monitors the states of all charging units and vehicles, using this feedback to dynamically assign vehicles to appropriate charging units. The system adjusts assignments based on current availability and priority status, optimizing service quality through responsive control.
Data Source
AI summary
Disclosed is an electric vehicle charging station enabling users to receive fast service with high or low priority, and keeping the ratio of average waiting times of low priority and high priority vehicles in the station at the same time within the target waiting time declared by the station, using a simulation based estimator based on the station's current state.