EV Power Control System Optimizing Charging Start Time
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Solution Overview
Problem
Conventional power control systems for electric vehicles and household devices struggle to efficiently manage charging and power supply within the lowest electricity rate time slots without exceeding contractual power limits, leading to potential disruptions in service, such as incomplete charging of electric vehicles or insufficient hot water supply.
Innovation Solution
A power control system that includes a charge information acquiring unit in the electric vehicle and a power control device, which determines the power supply start time for household devices and charging start time for the electric vehicle based on received charge information, ensuring both are completed before the vehicle's arrival, thereby optimizing power usage within the lowest electricity rate time slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If power is supplied to electric devices and rechargeable battery is charged during the lowest electricity rate time slot, then electricity cost is reduced, but the contractual power limit may be exceeded causing service disruption
Solution Approach 1:
The system performs preliminary actions by determining the power supply start time and charging start time in advance, before the lowest electricity rate time slot begins. The power control device calculates when to start supplying power to electric devices and when to start charging the rechargeable battery so that both complete before the vehicle arrives and before the time slot ends, preventing breaker tripping while maximizing energy cost savings.
Solution Approach 2:
The system dynamically adjusts the power supply schedule based on real-time information. The power control device receives charge information from the electric vehicle (including battery capacity, power consumption rate, and expected arrival time) and dynamically determines the optimal power supply start time and charging start time, allowing flexible adaptation to different scenarios while maintaining reliability.
2Productivity
If power supply start time and charging start time are determined in advance, then power usage is optimized within time slots, but flexibility to adapt to varying vehicle arrival times is reduced
Solution Approach 1:
The system implements feedback by having the electric vehicle transmit charge information (battery capacity, power consumption rate, expected arrival time) to the power control device before arrival. The power control device uses this feedback information to determine the optimal power supply start time and charging start time, creating a closed-loop system that adapts to actual vehicle conditions while maintaining efficient power usage within the lowest electricity rate time slot.
Data Source
AI summary
A power control system, a power control method, a power control device and a power control program supplies power to an electric device and charge an electric vehicle. A control device and method includes a receiver that receives charge information pertaining to the charging of the rechargeable battery prior to an arrival of the electric vehicle at a location where power is supplied to the electric vehicle, and a control determination unit that determines an operation start time of starting the operation of the electric device on the basis of the charge information received by the receiver. A non-transitory computer readable recording medium stores a control program that controls the charging of a rechargeable battery of an electric vehicle and controls operation of the electric device.