EV Charging Time-Zone Control Under Contract Power Limits
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Solution Overview
Problem
The increase in the number of electric vehicles and operation rates leads to concentrated power consumption, potentially exceeding contract power amounts during reservation times, resulting in higher electricity charges.
Innovation Solution
An electric vehicle charging management device that adjusts charging schedules by shifting charging times from peak consumption zones to reduce power consumption concentration, using travel course information, vehicle performance data, and charging facility details to optimize charging schedules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charging is performed during reservation time to improve operation rate, then vehicle availability is improved, but power consumption concentration increases
Solution Approach 1:
The charging management system dynamically adjusts charging schedules based on real-time power consumption data and reservation requirements. Instead of fixed charging times, the system flexibly redistributes charging tasks across different time zones, shifting charging from peak periods to off-peak periods while ensuring vehicles are charged before their reservations. This dynamic adjustment resolves the contradiction by making the charging schedule adaptable to both operational needs and power consumption constraints.
Solution Approach 2:
The system changes the timing parameter of charging operations by calculating optimal charging time zones that balance power consumption distribution with vehicle availability requirements. By modifying when charging occurs (temporal parameter) rather than how much charging occurs, the system maintains operation rates while reducing peak power consumption concentration.
2Productivity
If number of electric vehicles is increased to improve service capacity, then productivity is improved, but power consumption amount increases
Solution Approach 1:
The system performs preliminary calculation of charging time zones by analyzing travel course information and vehicle performance data before actual charging occurs. This advance planning allows the system to schedule charging during off-peak periods and distribute power consumption evenly, enabling the fleet to scale without proportionally increasing peak power demands. The preliminary scheduling ensures that as more vehicles are added, their charging can be coordinated to avoid simultaneous peak consumption.
Data Source
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AI summary
To suppress concentration of charging for a plurality of electric vehicles (EV) and achieve leveling. An electric vehicle charging management device 10 that manages charging for a plurality of EVs 40, the electric vehicle charging management device including: a charging time zone information creation unit 121 that creates charging time zone information 1007 indicating a charging schedule for each of the plurality of EVs 40 by using delivery course information 1001 and vehicle information 1003; a power consumption amount calculation unit 122 that calculates time zone-based power consumption amount information 1008 indicating a power consumption amount including an execution charging amount in each of the plurality of time zones; and a charging time zone information change unit 123 that changes the charging time zone information 1007 by changing charging for a changing target electric EV in a maximum time zone that is a time zone having the largest power consumption amount among the plurality of time zones.