Charging management device, charging management system, and charging management method

Patent metadata

Field	Value
Publication number	US-2016185246-A1
Application number	US-201615066640-A
Country	US
Kind code	A1
Filing date	Mar 10, 2016
Priority date	Sep 20, 2013
Publication date	Jun 30, 2016
Grant date	—

Abstract

A charging management device has a first acquisition circuitry which acquires EV information necessary to charge each EV car in a charging station, a second acquisition circuitry which acquires stationary storage battery information, a third acquisition circuitry which acquires supply power information from a system power, a fourth acquisition circuitry which acquires charger information, a preliminary charging amount calculation circuitry which calculates a preliminary charging amount representing a charging amount of each EV car, an EV charging model storage circuitry which stores an EV charging model outputting a maximum charging amount of the EV car, and a charging condition determination circuitry which determines a charging condition that the charging time of each EV car and the maximum output power of the charger are within certain ranges, respectively, and the difference between the maximum charging amount of each EV car and the preliminary charging amount is further reduced.

First claim

1 . A charging management device comprising:
a first acquisition circuitry which acquires EV information necessary to charge each EV car in a charging station; a second acquisition circuitry which acquires stationary storage battery information including a maximum output power of a stationary storage battery provided in the charging station; a third acquisition circuitry which acquires supply power information from a system power which can be used to charge each EV car in the charging station; a fourth acquisition circuitry which acquires charger information including a maximum output power of a charger provided in the charging station; a preliminary charging amount calculation circuitry which calculates a preliminary charging amount representing a charging amount of each EV car which can be charged in the charging station based on the information acquired by the first to fourth acquisition circuitries; an EV charging model storage circuitry which stores an EV charging model outputting a maximum charging amount of the EV car by using the maximum output power of the charger and a charging time of the EV car as input parameters; and a charging condition determination circuitry which, after a certain constraint condition is satisfied, determines a charging condition that the charging time of each EV car and the maximum output power of the charger are within certain ranges, respectively, and the difference between the maximum charging amount of each EV car and the preliminary charging amount is further reduced.

2 . The charging management device according to claim 1 , further comprising a charging amount adjustment circuitry which adjusts the maximum charging amount of each EV car determined by the charging condition determination circuitry based on at least one of a request charging amount and a battery residual amount of each waiting-for-charging EV car.

3 . The charging management device according to claim 2 , wherein the charging amount adjustment circuitry adjusts the maximum charging amount of each EV car by proportionally distributing a surplus charging amount exceeding the request charging amount among the maximum charging amounts of the EV cars determined by the charging condition determination circuitry, to the EV cars of which charging amounts do not exceed the request charging amount.

4 . The charging management device according to claim 1 , wherein the constraint condition includes at least one of a constraint condition associated with a request charging time requested by each EV car, a constraint condition associated with a request discharging power requested from the stationary storage battery, a constraint condition associated with a request discharging amount requested from the stationary storage battery, and a constraint condition associated with a charging waiting time of each EV car.

5 . The charging management device according to claim 1 , wherein the EV charging model outputs the maximum charging amount of the EV car by using the maximum output power of the charger, the charging time of the EV car, information on a battery of the EV car, and a battery residual amount of the EV car as input parameters.

6 . The charging management device according to claim 1 , further comprising a stationary storage battery discharging model storage which stores a stationary storage battery discharging model which outputs the maximum charging amount of the EV car and a necessary discharging amount of the stationary storage battery by using the maximum output power of the charger and the charging time of the EV car as input parameters,
wherein the charging condition determination circuitry determines the charging condition based on the EV charging model, the stationary storage battery discharging model and the preliminary charging amount so that the constraint condition is satisfied.

7 . The charging management device according to claim 1 , wherein the charging condition determination circuitry comprises:
a first check circuitry which acquires the maximum charging amount of the EV car corresponding to the set input parameters from the EV charging model and checks whether or not the constraint condition is satisfied; a second check circuitry which checks whether or not the maximum charging amount acquired from the EV charging model is closer to the preliminary charging amount than to a set-in-advance maximum charging amount in a case where the constraint condition is satisfied; a parameter update circuitry which updates the maximum charging amount and the charging time of the EV car and the maximum output power of the charger based on the input parameters in a case where the maximum charging amount acquired from the EV charging model is closer to the preliminary charging amount; a third check circuitry which checks whether or not the charging time of the EV car included in the newly-selected input parameters is smaller than a previously-defined first lower limit value in a case where the set-in-advance maximum charging amount is closer to the preliminary charging amount or in a case where the update by the parameter update circuitry is ended; and a fourth check circuitry which performs the check of the first check circuitry again in a case where the charging time is not smaller than the first lower limit value and checks whether or not the maximum charging amount of the EV car included in the newly-selected input parameters is smaller than a set-in-advance second lower limit value in a case where the charging time is smaller than the first lower limit value, wherein, in a case where the charging time is not smaller than the second lower limit value, the check of the first check circuitry is performed again, and in a case where the charging time is smaller than the second lower limit value, the charging condition including the maximum charging amount and the charging time of the EV car lastly updated by the parameter update circuitry and the maximum output power of the charger is determined.

8 . The charging management device according to claim 1 , wherein the charging condition determination circuitry determines the maximum charging amount of each EV car of a waiting-for-charging group including one or more waiting-for-charging EV cars in the charging station and the maximum output power of the charger and determines the maximum charging amount and the charging time of each EV car of a scheduled-to-arrive group including one or more scheduled-to-arrive EV cars in the charging station and the maximum output power of the charger.

9 . The charging management device according to claim 1 , further comprising a route periphery information acquisition circuitry which acquires travel route information of each EV car and charging site information about charging sites existing in the periphery of the charging station,
wherein the preliminary charging amount calculation circuitry calculates necessary charging amounts of waiting-for-charging EV cars and scheduled-to-arrive EV cars based on the travel route information and the charging site information and calculates the preliminary charging amounts of the waiting-for-charging EV cars and scheduled-to-arrive EV cars by taking into consideration the necessary charging amounts.

10 . The charging management device according to claim 9 , wherein, in a case where the next travel route of the waiting-for-charging EV car in the charging station is unclear, the preliminary charging amount calculation circuitry calculates the necessary charging amount based on the energy necessary for the EV car traveling to the farthest charging site among the charging sites existing in the periphery of the charging station.

11 . The charging management device according to claim

Assignees

• Toshiba Kk

Inventors

• PAUL Topon

Classifications

• Y04S10/126

  the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G] · CPC title

• B60L2240/54

  related to batteries · CPC title

• B60L53/63

  in response to network capacity · CPC title

• B60L53/65

  involving identification of vehicles or their battery types · CPC title

• B60L53/53

  Batteries · CPC title