EV Charging Schedule Redistribution for Peak Power Leveling
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Solution Overview
Problem
The increase in the number of electric vehicles leads to increased power consumption, which can result in electricity charges exceeding contract limits during concentrated charging times, particularly in scenarios involving multiple vehicles managed by transportation service providers or residential buildings.
Innovation Solution
An electric vehicle charging management device that adjusts charging schedules to distribute power consumption across time zones, using travel course information, vehicle performance, and charging facility data to identify and redistribute charging times in peak periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charging is performed during reservation time to improve operation rate, then vehicle availability increases, but power consumption concentration increases causing contract power amount to be exceeded
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 to balance power consumption while ensuring vehicles are charged before their reservation times, thus maintaining high operation rates without exceeding contract power limits
Solution Approach 2:
The system performs preliminary calculation of power consumption amounts for each time zone based on reservation information before charging execution. By anticipating peak consumption periods in advance, the system proactively redistributes charging tasks from high-consumption time zones to lower-consumption periods, preventing contract power amount exceedance while ensuring vehicles are ready for reservations
2Productivity
If the number of electric vehicles is increased to improve service capacity, then operation rate improves, but necessary power consumption amount increases leading to contract power amount exceedance
Solution Approach 1:
The system segments the charging load across multiple time zones rather than concentrating all charging in single peak periods. By dividing the fleet into different charging groups and scheduling them across off-peak and peak hours, the system accommodates a larger number of vehicles while keeping power consumption in each time zone within contract limits, thus expanding service capacity without proportionally increasing peak power demand
Data Source
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.