EV Charging Control for Billing Station Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle charging systems face inefficiencies in public charging stations due to prolonged charging times and increased electricity bills when using electric current reduction control, which also lead to user inconvenience and queue formation.
Innovation Solution
A vehicle equipped with an electronic control unit that performs electric current reduction control only when charging at non-billing stations, allowing for reduced charging time and lower electricity bills at billing stations, thereby improving user convenience and extending EV travel distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If electric current reduction control is performed to extend EV travel distance, then the amount of electric power stored in the power storage device increases, but charging time increases and electricity bills increase at billing charging stations
Solution Approach 1:
The system dynamically changes the charging current parameter based on the charging station type. At billing charging stations, the system maintains high charging current to minimize charging time and electricity bills. At non-billing charging stations, the system reduces charging current to extend EV travel distance by storing more electric power. This parameter adaptation resolves the contradiction by optimizing charging strategy according to external conditions.
2Quantity of substance
If electric current reduction control is performed to extend EV travel distance, then the amount of electric power stored in the power storage device increases, but electricity bills increase at billing charging stations
Solution Approach 1:
The system adapts the charging current parameter based on whether the charging station is a billing charging station. At billing charging stations, the system maintains high charging current to minimize electricity bills, avoiding the electric current reduction control that would otherwise increase power storage. This resolves the contradiction between storing more energy and minimizing energy costs.
3Quantity of substance
If electric current reduction control is performed to extend EV travel distance, then charging continues longer, but queues at charging stations are less likely to be eliminated and user convenience deteriorates
Solution Approach 1:
The system changes the charging current parameter based on charging station type and queue conditions. At billing charging stations where queues form, the system maintains high charging current to complete charging quickly, eliminating queues and improving user convenience. This resolves the contradiction between extending travel distance through prolonged charging and maintaining user convenience through quick charging.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces charging time and electricity costs at billing stations while maintaining extended EV travel distance by selectively applying electric current reduction control based on charging location, enhancing user convenience and station efficiency.
Implementation Method 1
a power storage device (200)... configured to be charged with electric power supplied from a charging apparatus installed outside the vehicle
Implementation Method 2
a voltage of the power storage device is higher than that of electromotive force of the power storage device by a voltage equivalent to the product of charging current and internal resistance of the power storage device
Data Source
AI summary
A vehicle includes an inlet configured to be able to receive electric power to charge a power storage device from a charging apparatus or a charging station. An ECU is configured to perform second charging control for causing a power converter to reduce charging current into the power storage device when a voltage of the power storage device is higher than a predetermined voltage, as compared with when a voltage thereof is lower than the predetermined voltage. The ECU reduces charging time by second charging control when the power storage device is charged with electric power supplied from an external charging apparatus and the external charging apparatus is a charging station billing electricity bills in accordance with charging time, as compared with when the external charging apparatus is a charging apparatus installed at a user's home.