WO2021038762A1 - Charge/discharge control device, electricity storage system, and charge/discharge control method - Google Patents

Charge/discharge control device, electricity storage system, and charge/discharge control method Download PDF

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Publication number
WO2021038762A1
WO2021038762A1 PCT/JP2019/033737 JP2019033737W WO2021038762A1 WO 2021038762 A1 WO2021038762 A1 WO 2021038762A1 JP 2019033737 W JP2019033737 W JP 2019033737W WO 2021038762 A1 WO2021038762 A1 WO 2021038762A1
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WO
WIPO (PCT)
Prior art keywords
charge
control device
discharger
dischargers
discharge control
Prior art date
Application number
PCT/JP2019/033737
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French (fr)
Japanese (ja)
Inventor
匠人 鈴木
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/033737 priority Critical patent/WO2021038762A1/en
Publication of WO2021038762A1 publication Critical patent/WO2021038762A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to a charge / discharge control device, a power storage system, and a charge / discharge control method that control the operation of a plurality of charge / discharge devices, each of which charges / discharges a storage battery.
  • Patent Document 1 an invention for using both a stationary storage battery and a storage battery mounted on an electric vehicle as described above has been proposed.
  • Patent Document 1 By using the stationary storage battery and the storage battery of the electric vehicle together, it is possible to store more electric power by using the storage battery of the electric vehicle when the electric vehicle is not used.
  • Patent Document 1 includes one charging device for a plurality of storage batteries, and the charging / discharging device charges / discharges each storage battery according to a set priority. Further, Patent Document 1 describes that a configuration including a plurality of charge / discharge circuits for charging / discharging each of a plurality of storage batteries is also charged / discharged according to a priority order.
  • each charge / discharge circuit When a plurality of charge / discharge circuits for charging / discharging each of a plurality of storage batteries are provided, each charge / discharge circuit operates individually in consideration of the state of the connected storage batteries, the power usage method desired by the user, and the like. Do. Therefore, there may be a case where each of the plurality of charge / discharge circuits performs different operations. For example, it is conceivable that some charge / discharge circuits perform a discharge operation and the remaining charge / discharge circuits perform a charge operation. The operation in such a case is not considered in the invention described in Patent Document 1. Therefore, the electric power discharged from one storage battery may be charged to another storage battery, and a meaningless power conversion loss may occur due to the power transfer between the storage batteries.
  • the present invention has been made in view of the above, and in a power storage system including a plurality of charge / dischargers that individually charge / discharge a plurality of storage batteries, it is possible to prevent power transfer between the storage batteries.
  • the purpose is to obtain a charge / discharge control device that can be used.
  • the present invention is a charge / discharge control device that controls the operation of a plurality of charge / discharge devices, each of which individually charges and discharges a storage battery, and prioritizes the operation. It is provided with a priority management unit that manages priority information indicating the charger / discharger to be operated. Further, the charge / discharge control device performs power conversion in which any one of the plurality of charge / dischargers is in the charge operation or the discharge operation based on the priority information and the operating state of each of the plurality of charge / dischargers. It is provided with an operation control unit that controls the operation of a plurality of charge / dischargers so as to perform the operation.
  • the charge / discharge control device has an effect that it is possible to prevent power transfer between storage batteries in a power storage system including a plurality of charge / discharge devices that individually charge and discharge a plurality of storage batteries. Play.
  • FIG. 1 is a diagram showing a configuration example of a power storage system according to a first embodiment of the present invention.
  • the power storage system 200 according to the present embodiment is realized by combining the charge / discharge control device according to the present invention with a plurality of storage batteries and a charge / discharger.
  • the power storage system 200 is for a charge / discharger 1 for an electric vehicle that charges / discharges a storage battery 41 for an EV (Electric Vehicle) mounted on a vehicle 4 such as an electric vehicle, and a stationary storage battery that charges / discharges a stationary storage battery 24.
  • a user interface for the user to set the charge / discharger 2, the charge / discharge control device 3 for controlling the operation of the charge / discharger 1 for an electric vehicle and the charge / discharger 2 for a stationary storage battery, and the charge / discharge control device 3.
  • the vehicle 4 may be a PHEV (Plug-in Hybrid Electric Vehicle) vehicle.
  • the electric vehicle charge / discharger 1 and the stationary storage battery charge / discharger 2 are connected to a household load 5 and a power system 100 which is a commercial power source, respectively.
  • the user interface unit 6 may be realized by a personal computer, a smartphone, or the like, or may be realized by a dedicated device including a display means and an input means. Further, the charge / discharge control device 3 and the user interface unit 6 may be directly connected to each other, or may be connected to each other via a network such as the Internet. Further, although FIG. 1 shows an example in which the charge / discharge control device 3 and the user interface unit 6 are configured separately, the charge / discharge control device 3 may be configured to include the user interface unit 6.
  • the electric vehicle charge / discharger 1 and the stationary storage battery charge / discharger 2 are used for the remaining amount of the connected storage battery, the set operating conditions, the content of the operation received from the user, and the like. Operate individually based on.
  • the operating conditions include, for example, the remaining battery level for starting charging, the remaining battery level for stopping charging, and the time zone for charging.
  • the charger / discharger 1 for an electric vehicle includes a power conversion unit 11, a control unit 12, and a communication interface unit 13, and is connected to the vehicle 4 via a connector 10.
  • the power conversion unit 11 charges or discharges the EV storage battery 41 mounted on the vehicle 4 in accordance with the instruction from the control unit 12. That is, when the power conversion unit 11 receives an instruction from the control unit 12 to perform a charging operation, the power conversion unit 11 performs a charging operation that converts the AC power supplied from the power system 100 into DC power and outputs it to the EV storage battery 41. Further, when the power conversion unit 11 receives an instruction from the control unit 12 to perform a discharge operation, the power conversion unit 11 converts the DC power output by the EV storage battery 41 mounted on the vehicle 4 into AC power and supplies it to the household load 5. Performs a discharge operation.
  • the control unit 12 controls the operation of the power conversion unit 11 based on the information acquired from the control unit 42 of the vehicle 4 and the command received from the charge / discharge control device 3 via the communication interface unit 13.
  • the information acquired by the control unit 12 from the control unit 42 of the vehicle 4 includes connection state information indicating whether or not the EV storage battery 41 is connected to the power conversion unit 11, and a balance indicating the remaining amount of the EV storage battery 41. Includes quantity information, full charge information indicating whether the EV storage battery 41 is in a fully charged state, overdischarge information indicating whether the EV storage battery 41 is in an overdischarged state, and the like.
  • control unit 12 cannot acquire information from the control unit 42 of the vehicle 4 when the charger / discharger 1 for the electric vehicle and the vehicle 4 are not connected. In order to acquire the above-mentioned various information, the control unit 12 periodically tries to communicate with the control unit 42, and if communication is not possible, the EV storage battery 41 is not connected to the power conversion unit 11. Judge. When the control unit 12 can communicate with the control unit 42, the control unit 12 acquires the above-mentioned various information from the control unit 42. Further, the control unit 12 provides various information acquired from the control unit 42 of the vehicle 4 to the charge / discharge control device 3 via the communication interface unit 13 together with information indicating the operating state of the charge / discharger 1 for the electric vehicle. ..
  • the control unit 12 controls the power conversion unit 11 so as to perform a charging operation when the charging execution condition of the EV storage battery 41 is satisfied.
  • the control unit 12 controls, for example, the power conversion unit 11 to perform a charging operation when the remaining amount of the EV storage battery 41 is below a predetermined first threshold value. Further, when the charging time zone is set, for example, when the charging is set to be performed at night when the purchase price of electric power is low, the control unit 12 has the first remaining amount of the EV storage battery 41.
  • the power conversion unit 11 is controlled so as to perform the charging operation when the value falls below the threshold value of the above and the charging operation is performed. Charging conditions are not limited to these. Even if the charging execution condition of the EV storage battery 41 is satisfied, the control unit 12 is a power conversion unit so as not to perform the charging operation when the charge / discharge control device 3 receives an instruction to stop the operation. 11 is controlled.
  • control unit 12 controls the power conversion unit 11 so as to perform a discharge operation when the discharge execution condition of the EV storage battery 41 is satisfied. For example, when the control unit 12 receives an operation instructing the discharge of the EV storage battery 41 from the user, the power conversion unit 11 controls the power conversion unit 11 to perform the discharge operation. When the time zone for discharging is set, the control unit 12 determines that the remaining amount of the EV storage battery 41 exceeds a predetermined second threshold value and the time zone for discharging is set. The power conversion unit 11 controls to perform the discharge operation.
  • the discharge execution conditions are not limited to these.
  • the control unit 12 is a power conversion unit so as not to perform the discharge operation when the charge / discharge control device 3 receives an instruction to stop the operation even when the discharge execution condition of the EV storage battery 41 is satisfied. 11 is controlled.
  • the communication interface unit 13 transmits and receives various information to and from the charge / discharge control device 3.
  • the stationary storage battery charger / discharger 2 includes a power conversion unit 21, a control unit 22, and a communication interface unit 23.
  • the power conversion unit 21 performs a charging operation or a discharging operation of the stationary storage battery 24 according to an instruction from the control unit 22. That is, when the power conversion unit 21 receives an instruction from the control unit 22 to perform a charging operation, the power conversion unit 21 performs a charging operation that converts the AC power supplied from the power system 100 into DC power and outputs it to the stationary storage battery 24. Further, when the power conversion unit 21 receives an instruction from the control unit 22 to perform a discharge operation, the power conversion unit 21 performs a discharge operation of converting the DC power output by the stationary storage battery 24 into AC power and supplying it to the household load 5.
  • the control unit 22 controls the operation of the power conversion unit 21 based on the information indicating the state of the stationary storage battery 24 and the command received from the charge / discharge control device 3 via the communication interface unit 23.
  • the information indicating the state of the stationary storage battery 24 includes the remaining amount information indicating the remaining amount of the stationary storage battery 24, the fully charged information indicating whether the stationary storage battery 24 is in the fully charged state, and the stationary storage battery 24 in the over-discharged state. Over-discharge information indicating whether or not it is included, and the like.
  • the control unit 22 acquires information indicating the state of the stationary storage battery 24 by, for example, monitoring the voltage of the power line connecting the power conversion unit 21 and the stationary storage battery 24. Further, the control unit 22 provides the charge / discharge control device 3 with the information indicating the state of the stationary storage battery 24 together with the information indicating the operating state of the stationary storage battery charge / discharger 2 via the communication interface unit 23.
  • the control unit 22 controls the power conversion unit 21 so as to perform a charging operation when the charging execution condition of the stationary storage battery 24 is satisfied.
  • the control unit 22 controls, for example, the power conversion unit 21 to perform a charging operation when the remaining amount of the stationary storage battery 24 is below a predetermined third threshold value. Further, when the charging time zone is set, the control unit 22 performs the charging operation when the remaining amount of the stationary storage battery 24 is below the third threshold value and the charging time zone is set.
  • the power conversion unit 21 is controlled. Charging conditions are not limited to these. Even if the charging execution condition of the stationary storage battery 24 is satisfied, the control unit 22 is a power conversion unit so as not to perform the charging operation when the charge / discharge control device 3 receives an instruction to stop the operation. 21 is controlled.
  • control unit 22 controls the power conversion unit 21 so as to perform a discharge operation when the discharge execution condition of the stationary storage battery 24 is satisfied.
  • the control unit 22 controls the power conversion unit 21 to perform a discharge operation when, for example, an operation for instructing the discharge of the stationary storage battery 24 is received from the user.
  • the control unit 22 controls the power conversion unit 21 to perform the discharging operation during the time zone for discharging.
  • the discharge execution conditions are not limited to these. Even if the discharge execution condition of the stationary storage battery 24 is satisfied, the control unit 22 is a power conversion unit so as not to perform the discharge operation when the charge / discharge control device 3 receives an instruction to stop the operation. 21 is controlled.
  • the communication interface unit 23 transmits and receives various information to and from the charge / discharge control device 3.
  • FIG. 2 is a diagram showing a configuration example of the charge / discharge control device 3 according to the first embodiment.
  • the charge / discharge control device 3 includes an operation control unit 31, a schedule management unit 32, a priority management unit 33, and a communication interface unit 34.
  • the operation control unit 31 has a schedule managed by the schedule management unit 32, a priority managed by the priority management unit 33, and a communication interface unit 34 from the electric vehicle charger / discharger 1 and the stationary storage battery charger / discharger 2. Based on the acquired information, an operation command for instructing one or both of the electric vehicle charge / discharger 1 and the stationary storage battery charge / discharger 2 to operate is generated.
  • the operation control unit 31 When the operation control unit 31 generates an operation command, it transmits the operation command to one or both of the electric vehicle charger / discharger 1 and the stationary storage battery charger / discharger 2 via the communication interface unit 34.
  • the schedule management unit 32 manages the operation schedules of the charger / discharger 1 for electric vehicles and the charger / discharger 2 for stationary storage batteries.
  • the operation schedule includes a schedule for executing the charging operation and a schedule for executing the discharging operation.
  • the operation schedule is acquired from the user via the user interface unit 6.
  • the charging operation is performed during the time period when the price of the electric power supplied from the power system 100 is low
  • the discharging operation is performed during the time period when the price of the electric power supplied from the power system 100 is high. Is set to be consumed by the domestic load 5.
  • the priority management unit 33 manages priority information for controlling so that two or more of the plurality of target charge / discharge devices controlled by the charge / discharge control device 3 do not operate at the same time.
  • the priority information is information indicating a charger / discharger that gives priority to operation.
  • the priority information is acquired from the user via the user interface unit 6. That is, the user specifies which charge / discharger operation is prioritized when the operations of two or more charge / dischargers compete with each other.
  • the communication interface unit 34 transmits and receives various information between the charger / discharger 1 for an electric vehicle and the charger / discharger 2 for a stationary storage battery via a communication line.
  • FIG. 3 is a diagram showing an example of hardware that realizes the charge / discharge control device 3 according to the first embodiment.
  • the charge / discharge control device 3 is realized by, for example, hardware including the processor 91, the memory 92, and the communication circuit 93 shown in FIG.
  • the processor 91 is a CPU (Central Processing Unit, central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, DSP (Digital Signal Processor)), system LSI (Large Scale Integration), and the like.
  • the memory 92 includes RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EPROM (registered trademark) (Electrically Erasable Programmable ROM), and the like.
  • the operation control unit 31, the schedule management unit 32, and the priority management unit 33 of the charge / discharge control device 3 are realized by the processor 91 and the memory 92. Specifically, a program for operating as the operation control unit 31, the schedule management unit 32, and the priority management unit 33 is stored in the memory 92, and the processor 91 reads and executes the program stored in the memory 92. By doing so, the operation control unit 31, the schedule management unit 32, and the priority management unit 33 are realized. Further, the communication interface unit 34 is realized by the communication circuit 93.
  • FIG. 3 shows an example of a hardware configuration in which the charge / discharge control device 3 is realized by combining the general-purpose processor 91 and the memory 92 with the communication circuit 93.
  • the processor 91 and the memory 92 may be used.
  • the corresponding circuit may be realized by a dedicated processing circuit. That is, the operation control unit 31, the schedule management unit 32, and the priority management unit 33 may be realized by a dedicated processing circuit.
  • the dedicated processing circuit includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. Applicable to
  • FIG. 4 is a flowchart showing an example of the operation of the charge / discharge control device 3 according to the first embodiment.
  • the charge / discharge control device 3 repeatedly executes the operation according to the flowchart shown in FIG.
  • the charging / discharging device for an electric vehicle is described as an EV charging / discharging device.
  • the charging / discharging device for electric vehicles is described as the charging / discharging device for EV.
  • the charge / discharge control device 3 first confirms whether or not the two charge / dischargers are in the power conversion operation (step S1). Specifically, the operation control unit 31 confirms whether or not both the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery correspond to the state in which the power conversion operation is performed.
  • the power conversion operation includes a storage battery charging operation and a storage battery discharging operation. Therefore, in the case where the two charge / dischargers are in the power conversion operation, the case # 1 in which the charge / discharger 1 for the electric vehicle is in the charging operation and the charge / discharger 2 for the stationary storage battery is in the charging operation, and the case # 1 where the electricity is being charged.
  • Case # 2 in which the charging / discharging device 1 for an automobile is in the charging operation and the charging / discharging device 2 for the stationary storage battery is in the discharging operation, and the charging / discharging device 1 for the electric vehicle is in the discharging operation and in the stationary storage battery 2
  • the case # 3 in which is in the charging operation and the case # 4 in which the electric vehicle charger / discharger 1 is in the discharging operation and the stationary storage battery charge / discharger 2 is in the discharging operation are applicable.
  • step S1: No the charge / discharge control device 3 controls the control shown in FIG. End the operation.
  • the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for an electric vehicle (step S2). Specifically, the operation control unit 31 confirms whether the operation of the electric vehicle charger / discharger 1 is set to be prioritized.
  • the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 (step S3). Specifically, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits it to the stationary storage battery charger / discharger 2.
  • step S2 when the priority setting is not the electric vehicle charge / discharger 1 (step S2: No), that is, when the priority setting is the stationary storage battery charge / discharger 2, the charge / discharge control device 3 The operation of the charger / discharger 1 for the electric vehicle is stopped (step S4). Specifically, the operation control unit 31 generates an operation command instructing the operation stop and transmits it to the electric vehicle charger / discharger 1.
  • the charge / discharge control device 3 periodically changes the state of the two charge / dischargers, the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery. Check and if both are in power conversion operation, control is performed so that the charger / discharger for which the priority is not set stops the operation and the charger / discharger for which the priority is set continues the operation. As a result, it is possible to prevent each charger / discharger from performing unnecessary discharge and charging and causing power transfer between storage batteries. That is, it is possible to prevent energy loss due to the movement of electric power.
  • the charge / discharge control device 3 controls the operation of the charge / discharger according to the priority set by the user, the energy management can be appropriately performed according to the usage of the electric power desired by the user.
  • the charging / discharging device whose operation is controlled by the charging / discharging control device 3 is two types of charging / discharging devices, the charging / discharging device 1 for an electric vehicle and the charging / discharging device 2 for a stationary storage battery.
  • the configuration may be such that two charge / dischargers of the same type are controlled.
  • two stationary storage batteries are installed in the home, two charge / dischargers for charging / discharging these stationary storage batteries are also installed, and the charge / discharge control device 3 controls the operation of these two charge / dischargers. You may.
  • the charge / discharge control device 3 stops the operation of the charge / discharger for which the priority is not set when the two charge / dischargers are performing the power conversion operation at the same time according to the setting of the priority. That is, the charge / discharge control device 3 continues the operation of the charge / discharger for which the priority has been set.
  • the case where the charge / discharge control device 3 controls the operation of two charge / dischargers has been described, but similarly, the case where the charge / discharger to be controlled has three or more units is also the same. Control so that multiple chargers and dischargers do not perform power conversion operations at the same time.
  • a priority is set for each of the plurality of charge / dischargers, and when the charge / discharge control device 3 detects a state in which the plurality of charge / dischargers simultaneously perform the power conversion operation, the charge / discharger during the power conversion operation is charged. Of the dischargers, the charge / discharger other than the one with the highest priority is stopped.
  • control of the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery has been described when the control unit 12, the control unit 22, and the charge / discharge control device 3 are used. Part or all of these processes may be realized by an external device such as a HEMS (Home Energy Management System) controller.
  • HEMS Home Energy Management System
  • Embodiment 2 Next, the second embodiment will be described.
  • the configuration of the power storage system according to the second embodiment is the same as that of the first embodiment. Further, the configuration of each device constituting the power storage system is the same as that of the first embodiment. Therefore, in this embodiment, the description will be given with reference to FIGS. 1 and 2.
  • the charge / discharge control device 3 according to the present embodiment will explain the operation of the charge / discharger 1 for an electric vehicle and the charge / discharger 2 for a stationary storage battery while also considering the schedule managed by the schedule management unit 32.
  • FIG. 5 is a flowchart showing a first operation example of the charge / discharge control device 3 according to the second embodiment.
  • the operation according to the flowchart shown in FIG. 5 is executed at a time zone scheduled to perform the discharge operation.
  • the charge / discharge control device 3 repeatedly executes the operation according to the flowchart shown in FIG. 5 in a time zone scheduled to perform the discharge operation.
  • the charge / discharge control device 3 first confirms whether the EV is connected, that is, whether the EV storage battery 41 of the vehicle 4 is connected to the electric vehicle charge / discharger 1 (step S11). When there is no EV connection (step S11: No), the charge / discharge control device 3 discharges the stationary storage battery 24 (step S12). Specifically, the operation control unit 31 generates an operation command instructing the discharge operation and transmits it to the stationary storage battery charger / discharger 2.
  • step S11 when there is an EV connection (step S11: Yes), the charge / discharge control device 3 confirms whether or not the two charge / dischargers are in the power conversion operation (step S13).
  • the process of step S13 is the same as the process of step S1 shown in FIG.
  • step S14 the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S14).
  • the process of step S14 is the same as the process of step S2 shown in FIG.
  • the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and discharges the EV storage battery 41.
  • Step S15 the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the discharge operation to charge the electric vehicle.
  • step S14 when the priority setting is not the electric vehicle charge / discharger 1 (step S14: No), that is, when the priority setting is the stationary storage battery charge / discharger 2, the charge / discharge control device 3 stops the operation of the charger / discharger 1 for an electric vehicle and discharges the stationary storage battery 24 (step S16). Specifically, the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the electric vehicle charge / discharger 1, and also generates an operation command instructing the discharge operation to charge the stationary storage battery. It is transmitted to the discharger 2.
  • the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S17). ).
  • the priority setting is the electric vehicle charge / discharger 1 (step S17: Yes)
  • the charge / discharge control device 3 confirms whether or not the EV storage battery 41 can be discharged (step S18).
  • the operation control unit 31 of the charge / discharge control device 3 determines that discharge is possible, for example, when the remaining amount of the EV storage battery 41 is equal to or greater than the threshold value.
  • the threshold value shall be set in advance by the user in consideration of the usage schedule of the electric vehicle and the like. If the user does not set a threshold, the default value is set as the threshold.
  • the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and discharges the EV storage battery 41 (step S19). That is, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the discharge operation to generate the charge / discharger 1 for the electric vehicle. Send to. If the operation of the stationary storage battery charger / discharger 2 is stopped at the time of executing step S19, the operation control unit 31 transmits an operation command instructing the operation stop to the stationary storage battery charger / discharger 2. It does not have to be.
  • step S18 when the EV storage battery 41 is not dischargeable (step S18: No), the charge / discharge control device 3 stops the operation of the electric vehicle charge / discharger 1 and discharges the stationary storage battery 24 (step S20). .. That is, the operation control unit 31 generates an operation command for instructing the operation stop and transmits it to the electric vehicle charge / discharger 1, and also generates an operation command for instructing the discharge operation to generate the operation command for the stationary storage battery. Send to. If the electric vehicle charger / discharger 1 is stopped at the time of executing step S20, the operation control unit 31 does not send an operation command instructing the operation stop to the electric vehicle charger / discharger 1. May be good.
  • the charge / discharge control device 3 confirms whether or not the stationary storage battery 24 can be discharged (step S21).
  • the operation control unit 31 of the charge / discharge control device 3 determines that discharge is possible, for example, when the remaining amount of the stationary storage battery 24 is equal to or greater than the threshold value.
  • the threshold value a preset value may be used, or a user-set value may be used.
  • step S21: Yes the charge / discharge control device 3 stops the operation of the charge / discharger 1 for the electric vehicle and discharges the stationary storage battery 24 (step S22).
  • step S21: No the charge / discharge control device 3 stops the operation of the stationary storage battery charger / discharger 2 and discharges the EV storage battery 41 (step S23). ).
  • FIG. 6 is a flowchart showing a second operation example of the charge / discharge control device 3 according to the second embodiment.
  • the operation according to the flowchart shown in FIG. 6 is executed at a time zone scheduled to perform the charging operation.
  • the charge / discharge control device 3 repeatedly executes the operation according to the flowchart shown in FIG. 6 in a time zone scheduled to perform the charging operation.
  • the charge / discharge control device 3 first confirms whether the EV is connected, that is, whether the EV storage battery 41 of the vehicle 4 is connected to the electric vehicle charge / discharger 1 (step S31). When there is no EV connection (step S31: No), the charge / discharge control device 3 charges the stationary storage battery 24 (step S32). Specifically, the operation control unit 31 generates an operation command instructing the charging operation and transmits it to the stationary storage battery charger / discharger 2.
  • step S31 when there is an EV connection (step S31: Yes), the charge / discharge control device 3 confirms whether or not the two charge / dischargers are in the power conversion operation (step S33).
  • the process of step S33 is the same as that of step S1 shown in FIG. 4 and step S13 shown in FIG.
  • step S34 the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S34).
  • the process of step S34 is the same as that of step S2 shown in FIG. 4 and step S14 shown in FIG.
  • step S34: Yes the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and charges the EV storage battery 41. (Step S35).
  • the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the charging operation to charge the electric vehicle. It is transmitted to the discharger 1.
  • the priority setting is not the electric vehicle charge / discharger 1 (step S34: No)
  • the charge / discharge control device In step 3, the operation of the charger / discharger 1 for an electric vehicle is stopped, and the stationary storage battery 24 is charged (step S36).
  • the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the electric vehicle charge / discharger 1, and also generates an operation command instructing the charging operation to charge the stationary storage battery. It is transmitted to the discharger 2.
  • step S33 the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S37). ).
  • step S37 Yes
  • step S38 the charge / discharge control device 3 confirms whether or not the EV storage battery 41 can be charged (step S38).
  • the operation control unit 31 of the charge / discharge control device 3 determines, for example, that the EV storage battery 41 can be charged when it is not in the fully charged state.
  • the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and charges the EV storage battery 41 (step S39). That is, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the charging operation to generate the charge / discharger 1 for the electric vehicle. Send to. If the stationary storage battery charger / discharger 2 has stopped operating at the time of executing step S39, the operation control unit 31 transmits an operation command instructing the stationary storage battery charger / discharger 2 to stop the operation. It does not have to be.
  • the charge / discharge control device 3 stops the operation of the electric vehicle charge / discharger 1 and charges the stationary storage battery 24 (step S40). .. That is, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits the operation command to the electric vehicle charge / discharger 1, and also generates an operation command instructing the charging operation to generate the charge / discharger 2 for the stationary storage battery. Send to. If the electric vehicle charger / discharger 1 is stopped at the time of executing step S40, the operation control unit 31 does not send an operation command instructing the operation stop to the electric vehicle charger / discharger 1. May be good.
  • the charge / discharge control device 3 confirms whether or not the stationary storage battery 24 can be charged (step S41).
  • the operation control unit 31 of the charge / discharge control device 3 determines, for example, that the stationary storage battery 24 can be charged when it is not in the fully charged state.
  • step S41: Yes the charge / discharge control device 3 stops the operation of the charge / discharger 1 for the electric vehicle and charges the stationary storage battery 24 (step S42).
  • step S41: No the charge / discharge control device 3 stops the operation of the stationary storage battery charger / discharger 2 and charges the EV storage battery 41 (step S43). ).
  • the charge / discharge control device 3 has been described in the first embodiment in a time zone that does not correspond to any of the time zone scheduled to perform the discharge operation and the time zone scheduled to perform the charge operation.
  • the control operation that is, the control operation according to the flowchart of FIG. 4 is repeatedly executed.
  • the charge / discharge control device 3 charges / discharges the electric vehicle charge / discharger 1 and the stationary storage battery during the time zone scheduled to perform the discharge operation. Periodically check the status of the two chargers and dischargers of the electric appliance 2, and based on the confirmation result of the priority setting status and the status where the discharge operation is possible, one of the charge / dischargers should perform the discharge operation. , Control the operation of each charger / discharger. Further, the charge / discharge control device 3 periodically changes the state of the two charge / dischargers, the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery, during the time period scheduled to perform the charging operation.
  • the operation of each charging / discharging device is controlled so that any one of the charging / discharging devices performs the charging operation.
  • the discharge operation and the charge operation are scheduled, it is possible to prevent each charge / discharger from performing unnecessary discharge and charge and causing power transfer between the storage batteries.
  • FIG. 7 is a diagram showing a configuration example of the power storage system according to the third embodiment of the present invention.
  • the power storage system 200a according to the third embodiment has a configuration in which the photovoltaic power generation device 7 and the power sensor 8 are added to the power storage system 200 according to the first embodiment, and the charge / discharge control device 3 is replaced with the charge / discharge control device 3a. is there.
  • the charge / discharge control device 3a according to the present embodiment has the same configuration as the charge / discharge control device 3 according to the first embodiment (see FIG. 2), but the control operation is different from the charge / discharge control device 3. Specifically, the operation of the operation control unit 31 is different from that of the operation control unit 31 of the charge / discharge control device 3 according to the first embodiment.
  • the photovoltaic power generation device 7 converts sunlight into DC power, further converts DC power into AC power, and connects the household load 5. Output to the power line.
  • the power sensor 8 measures the power flow between the power system 100 and the power storage system 200a, and outputs the measurement result to the charge / discharge control device 3a.
  • the charge / discharge control device 3a includes the measurement result of the tidal current power by the power sensor 8, the state of the two charge / dischargers of the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery, and the priority setting state. Controls the operation of the charger / discharger 1 for electric vehicles and the charger / discharger 2 for stationary storage batteries based on the above.
  • FIGS. 8 and 9 are flowcharts showing an example of the operation of the charge / discharge control device 3a according to the third embodiment.
  • the charge / discharge control device 3a repeatedly executes the operation according to the flowcharts shown in FIGS. 8 and 9.
  • the operations according to the flowcharts shown in FIGS. 8 and 9 are repeatedly executed during the time period scheduled to perform the discharge operation.
  • the charge / discharge control device 3a first confirms whether the EV is connected, that is, whether the EV storage battery 41 of the vehicle 4 is connected to the electric vehicle charge / discharger 1 (step S51). When there is no EV connection (step S51: No), the charge / discharge control device 3a confirms whether there is reverse power flow (step S52). When there is reverse power flow (step S52: Yes), the charge / discharge control device 3a charges the stationary storage battery 24 (step S53). On the other hand, when there is no reverse power flow (step S52: No), the charge / discharge control device 3a discharges the stationary storage battery 24 (step S54).
  • step S55 the charge / discharge control device 3a confirms whether or not the two charge / dischargers are in the power conversion operation (step S55).
  • the charge / discharge control device 3a confirms whether or not the priority setting is the charge / discharger 1 for an electric vehicle (step S56).
  • the charge / discharge control device 3a stops the operation of the stationary storage battery charge / discharger 2 (step S57).
  • step S58 the charge / discharge control device 3a stops the operation of the electric vehicle charge / discharger 1 (step S58).
  • step S55 when the two charge / dischargers are not in the power conversion operation (step S55: No), the charge / discharge control device 3a confirms whether or not there is reverse power flow (step S59). When there is reverse power flow (step S59: Yes), the charge / discharge control device 3a confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S60).
  • the charge / discharge control device 3a confirms whether or not the stationary storage battery 24 can be charged (step S64).
  • the charge / discharge control device 3a stops the operation of the charge / discharger 1 for the electric vehicle and charges the stationary storage battery 24 (step S65).
  • the stationary storage battery 24 is not rechargeable (step S64: No)
  • the charge / discharge control device 3a stops the operation of the stationary storage battery charger / discharger 2 and charges the EV storage battery 41 (step S66). ).
  • step S60 when the priority is set for the electric vehicle charge / discharger 1 (step S60: Yes), the charge / discharge control device 3a confirms whether or not the EV storage battery 41 can be charged (step S61). .. When the EV storage battery 41 can be charged (step S61: Yes), the charge / discharge control device 3a stops the operation of the stationary storage battery charge / discharger 2 to charge the EV storage battery 41 (step S62). On the other hand, when the EV storage battery 41 is not rechargeable (step S61: No), the charge / discharge control device 3a stops the operation of the electric vehicle charge / discharger 1 and charges the stationary storage battery 24 (step S63). ..
  • step S59 determines in step S59 that there is no reverse power flow (step S59: No)
  • step S67 confirms whether or not the priority setting is the charge / discharger 1 for electric vehicles
  • the charge / discharge control device 3a confirms whether or not the stationary storage battery 24 can be discharged (step S71).
  • the charge / discharge control device 3a stops the operation of the charge / discharger 1 for the electric vehicle and discharges the stationary storage battery 24 (step S72).
  • the stationary storage battery 24 is not dischargeable (step S71: No)
  • the charge / discharge control device 3a stops the operation of the stationary storage battery charger / discharger 2 and discharges the EV storage battery 41 (step S73).
  • step S67: Yes the charge / discharge control device 3a confirms whether or not the EV storage battery 41 can be discharged. ..
  • step S68: Yes the charge / discharge control device 3a stops the operation of the stationary storage battery charge / discharger 2 and discharges the EV storage battery 41 (step S69).
  • step S68: No the charge / discharge control device 3a stops the operation of the electric vehicle charge / discharger 1 and discharges the stationary storage battery 24 (step S70). ..
  • the charge / discharge control device 3a confirms whether or not there is reverse power flow in the time zone scheduled to perform the discharge operation, and the electric vehicle.
  • Each one of the charge / discharger performs the power conversion operation based on the state of the two charge / dischargers 1 and the charge / discharger 2 for the stationary storage battery and the priority setting state. Controls the operation of the charger / discharger.
  • the time zone scheduled for charging operation is at night when the purchase price of electricity is low, and the photovoltaic power generation device 7 does not generate electricity at night. Therefore, it can be considered that the photovoltaic power generation device 7 does not exist in the operation in the time zone scheduled to perform the charging operation.
  • the operation in this case is the operation in the time zone scheduled to perform the charging operation described in the second embodiment, that is, the operation according to the flowchart shown in FIG.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
  • 1 Charge / discharger for electric vehicles 1 Charge / discharger for electric vehicles, 2 Charger / discharger for stationary storage batteries, 3,3a Charge / discharge control device, 4 Vehicles, 5 Home load, 6 User interface unit, 7 Solar power generation device, 8 Power sensor, 10 Connector 11,21 Power conversion unit, 12, 22, 42 Control unit, 13, 23, 34 Communication interface unit, 24 Stationary storage battery, 31 Operation control unit, 32 Schedule management unit, 33 Priority management unit, 41 EV storage battery , 100 power system, 200, 200a power storage system.

Abstract

The charge/discharge control device (3) controls the operations of a plurality of charge/discharge units each separately charging and discharging a storage battery and is provided with: a priority management unit (33) for managing priority information indicating a charge/discharge unit, the operation of which is prioritized; and an operation control unit (31) for controlling, on the basis of the priority information and the operation state of each of the plurality of charge/discharge units, the operations of the plurality of charge/discharge units so as to perform a power conversion operation in which one of the plurality of charge/discharge units is in charge operation or discharge operation.

Description

充放電制御装置、蓄電システムおよび充放電制御方法Charge / discharge control device, power storage system and charge / discharge control method
　本発明は、それぞれが蓄電池の充放電を行う複数の充放電器の動作を制御する充放電制御装置、蓄電システムおよび充放電制御方法に関する。 The present invention relates to a charge / discharge control device, a power storage system, and a charge / discharge control method that control the operation of a plurality of charge / discharge devices, each of which charges / discharges a storage battery.
　近年、家庭内の負荷に電力を供給可能な定置型蓄電池の普及が進んでいる。定置型蓄電池を家庭内に設置することにより、災害発生などにより系統電源が停電した場合にも家庭内の負荷を稼働させることができる。また、系統電源から供給される電力の購入価格が時間帯に応じて変動する場合に、購入価格が安い時間帯に系統から電力を購入して定置型蓄電池を充電し、購入価格が高い時間帯に定置型蓄電池を放電させて家庭内の負荷に供給するようにして電気料金を抑制することができる。太陽光発電が可能な家庭においては、太陽光発電で発生した余剰電力を定置型蓄電池に充電し、充電しておいた電力を太陽光発電が不可能な夜間に使用するといったこともできる。 In recent years, stationary storage batteries that can supply power to household loads have become widespread. By installing the stationary storage battery in the home, the load in the home can be operated even if the system power supply is cut off due to a disaster or the like. In addition, when the purchase price of the power supplied from the grid power supply fluctuates according to the time zone, the power is purchased from the grid during the time zone when the purchase price is low to charge the stationary storage battery, and the purchase price is high. Electricity charges can be suppressed by discharging the stationary storage battery and supplying it to the load in the home. In a household where photovoltaic power generation is possible, surplus electricity generated by photovoltaic power generation can be charged into a stationary storage battery, and the charged electricity can be used at night when photovoltaic power generation is not possible.
　また、電気自動車に搭載された蓄電池の新たな使用方法として、電気自動車を使用しないときに、電気自動車に搭載された蓄電池を上記の定置型蓄電池の代わりに使用することが提案されている。 In addition, as a new method of using the storage battery mounted on the electric vehicle, it has been proposed to use the storage battery mounted on the electric vehicle instead of the above-mentioned stationary storage battery when the electric vehicle is not used.
　さらに、定置型蓄電池および電気自動車に搭載された蓄電池の双方を上記のように使用するための発明が提案されている（特許文献１）。定置型蓄電池と電気自動車の蓄電池とを併せて使用することにより、電気自動車を使用しない場合は電気自動車の蓄電池を利用してより多くの電力を蓄積しておくことが可能となる。 Further, an invention for using both a stationary storage battery and a storage battery mounted on an electric vehicle as described above has been proposed (Patent Document 1). By using the stationary storage battery and the storage battery of the electric vehicle together, it is possible to store more electric power by using the storage battery of the electric vehicle when the electric vehicle is not used.
特開２０１６－５３８９号公報Japanese Unexamined Patent Publication No. 2016-5389
　特許文献１に記載の発明は、複数の蓄電池に対して１つの充電装置を備え、充放電装置は、設定された優先順位に従い、各蓄電池の充放電を行う。また、特許文献１には、複数の蓄電池それぞれを充放電するための充放電回路を複数備える構成についても優先順位に従い充放電を行うことが記載されている。 The invention described in Patent Document 1 includes one charging device for a plurality of storage batteries, and the charging / discharging device charges / discharges each storage battery according to a set priority. Further, Patent Document 1 describes that a configuration including a plurality of charge / discharge circuits for charging / discharging each of a plurality of storage batteries is also charged / discharged according to a priority order.
　複数の蓄電池それぞれを充放電するための充放電回路を複数備える場合、各充放電回路は、接続されている蓄電池の状態、ユーザが希望する電力の使用方法などを考慮して、個別に動作を行う。そのため、複数の充放電回路のそれぞれが異なる動作を行うケースがあり得る。例えば、一部の充放電回路が放電動作を行い、残りの充放電回路は充電動作を行う場合が考えられる。このような場合の動作について、特許文献１に記載の発明では考慮されていない。そのため、ある蓄電池から放電された電力が、他の蓄電池に充電されてしまい、蓄電池間の電力移動による無意味な電力変換ロスが発生する場合がある。 When a plurality of charge / discharge circuits for charging / discharging each of a plurality of storage batteries are provided, each charge / discharge circuit operates individually in consideration of the state of the connected storage batteries, the power usage method desired by the user, and the like. Do. Therefore, there may be a case where each of the plurality of charge / discharge circuits performs different operations. For example, it is conceivable that some charge / discharge circuits perform a discharge operation and the remaining charge / discharge circuits perform a charge operation. The operation in such a case is not considered in the invention described in Patent Document 1. Therefore, the electric power discharged from one storage battery may be charged to another storage battery, and a meaningless power conversion loss may occur due to the power transfer between the storage batteries.
　本発明は、上記に鑑みてなされたものであって、複数の蓄電池に対して個別に充放電を行う複数の充放電器を備える蓄電システムにおいて、蓄電池間で電力の移動が発生するのを防止することが可能な充放電制御装置を得ることを目的とする。 The present invention has been made in view of the above, and in a power storage system including a plurality of charge / dischargers that individually charge / discharge a plurality of storage batteries, it is possible to prevent power transfer between the storage batteries. The purpose is to obtain a charge / discharge control device that can be used.
　上述した課題を解決し、目的を達成するために、本発明は、それぞれが蓄電池の充電および放電を個別に行う複数の充放電器の動作を制御する充放電制御装置であって、動作を優先させる充放電器を示す優先権情報を管理する優先権管理部を備える。また、充放電制御装置は、優先権情報および複数の充放電器それぞれの動作状態に基づいて、複数の充放電器の中のいずれか一つの充放電器が充電動作または放電動作である電力変換動作を行うよう、複数の充放電器の動作を制御する動作制御部を備える。 In order to solve the above-mentioned problems and achieve the object, the present invention is a charge / discharge control device that controls the operation of a plurality of charge / discharge devices, each of which individually charges and discharges a storage battery, and prioritizes the operation. It is provided with a priority management unit that manages priority information indicating the charger / discharger to be operated. Further, the charge / discharge control device performs power conversion in which any one of the plurality of charge / dischargers is in the charge operation or the discharge operation based on the priority information and the operating state of each of the plurality of charge / dischargers. It is provided with an operation control unit that controls the operation of a plurality of charge / dischargers so as to perform the operation.
　本発明にかかる充放電制御装置は、複数の蓄電池に対して個別に充放電を行う複数の充放電器を備える蓄電システムにおいて、蓄電池間で電力の移動が発生するのを防止できる、という効果を奏する。 The charge / discharge control device according to the present invention has an effect that it is possible to prevent power transfer between storage batteries in a power storage system including a plurality of charge / discharge devices that individually charge and discharge a plurality of storage batteries. Play.
本発明の実施の形態１にかかる蓄電システムの構成例を示す図The figure which shows the structural example of the power storage system which concerns on Embodiment 1 of this invention. 実施の形態１にかかる充放電制御装置の構成例を示す図The figure which shows the structural example of the charge / discharge control apparatus which concerns on Embodiment 1. 実施の形態１にかかる充放電制御装置を実現するハードウェアの一例を示す図The figure which shows an example of the hardware which realizes the charge / discharge control device which concerns on Embodiment 1. 実施の形態１にかかる充放電制御装置の動作の一例を示すフローチャートA flowchart showing an example of the operation of the charge / discharge control device according to the first embodiment. 実施の形態２にかかる充放電制御装置の第１の動作例を示すフローチャートA flowchart showing a first operation example of the charge / discharge control device according to the second embodiment. 実施の形態２にかかる充放電制御装置の第２の動作例を示すフローチャートA flowchart showing a second operation example of the charge / discharge control device according to the second embodiment. 本発明の実施の形態３にかかる蓄電システムの構成例を示す図The figure which shows the structural example of the power storage system which concerns on Embodiment 3 of this invention. 実施の形態３にかかる充放電制御装置の動作の一例を示すフローチャートA flowchart showing an example of the operation of the charge / discharge control device according to the third embodiment. 実施の形態３にかかる充放電制御装置の動作の一例を示すフローチャートA flowchart showing an example of the operation of the charge / discharge control device according to the third embodiment.
　以下に、本発明の実施の形態にかかる充放電制御装置、蓄電システムおよび充放電制御方法を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 The charge / discharge control device, the power storage system, and the charge / discharge control method according to the embodiment of the present invention will be described in detail below with reference to the drawings. The present invention is not limited to this embodiment.
実施の形態１．
　図１は、本発明の実施の形態１にかかる蓄電システムの構成例を示す図である。本実施の形態にかかる蓄電システム２００は、本発明にかかる充放電制御装置と複数の蓄電池および充放電器とを組み合わせて実現される。 Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a power storage system according to a first embodiment of the present invention. The power storage system 200 according to the present embodiment is realized by combining the charge / discharge control device according to the present invention with a plurality of storage batteries and a charge / discharger.
　蓄電システム２００は、電気自動車などの車両４に搭載されたＥＶ（Electric　Vehicle）用蓄電池４１の充放電を行う電気自動車用充放電器１と、定置型蓄電池２４の充放電を行う定置型蓄電池用充放電器２と、電気自動車用充放電器１および定置型蓄電池用充放電器２の動作を制御する充放電制御装置３と、充放電制御装置３の設定などをユーザが行うためのユーザインタフェース部６と、を含む。なお、車両４はＰＨＥＶ（Plug-in　Hybrid　Electric　Vehicle）の車両であってもよい。電気自動車用充放電器１および定置型蓄電池用充放電器２は、それぞれ、家庭内負荷５および商用電源である電力系統１００に接続される。ユーザインタフェース部６は、パーソナルコンピュータ、スマートフォンなどで実現してもよいし、表示手段と入力手段とを含む専用の装置で実現してもよい。また、充放電制御装置３とユーザインタフェース部６は直接接続される構成であってもよいし、インターネットなどのネットワークを介して接続される構成としても構わない。また、図１では、充放電制御装置３とユーザインタフェース部６とを別々の構成とする例を示したが、充放電制御装置３がユーザインタフェース部６を含む構成であってもよい。 The power storage system 200 is for a charge / discharger 1 for an electric vehicle that charges / discharges a storage battery 41 for an EV (Electric Vehicle) mounted on a vehicle 4 such as an electric vehicle, and a stationary storage battery that charges / discharges a stationary storage battery 24. A user interface for the user to set the charge / discharger 2, the charge / discharge control device 3 for controlling the operation of the charge / discharger 1 for an electric vehicle and the charge / discharger 2 for a stationary storage battery, and the charge / discharge control device 3. Including part 6. The vehicle 4 may be a PHEV (Plug-in Hybrid Electric Vehicle) vehicle. The electric vehicle charge / discharger 1 and the stationary storage battery charge / discharger 2 are connected to a household load 5 and a power system 100 which is a commercial power source, respectively. The user interface unit 6 may be realized by a personal computer, a smartphone, or the like, or may be realized by a dedicated device including a display means and an input means. Further, the charge / discharge control device 3 and the user interface unit 6 may be directly connected to each other, or may be connected to each other via a network such as the Internet. Further, although FIG. 1 shows an example in which the charge / discharge control device 3 and the user interface unit 6 are configured separately, the charge / discharge control device 3 may be configured to include the user interface unit 6.
　蓄電システム２００において、電気自動車用充放電器１および定置型蓄電池用充放電器２は、それぞれ、接続されている蓄電池の残量、設定されている動作条件、ユーザから受け付けた操作の内容などに基づいて個別に動作を行う。動作条件としては、例えば、充電を開始する電池残量、充電を停止する電池残量、充電を行う時間帯などが該当する。 In the power storage system 200, the electric vehicle charge / discharger 1 and the stationary storage battery charge / discharger 2 are used for the remaining amount of the connected storage battery, the set operating conditions, the content of the operation received from the user, and the like. Operate individually based on. The operating conditions include, for example, the remaining battery level for starting charging, the remaining battery level for stopping charging, and the time zone for charging.
　電気自動車用充放電器１は、電力変換部１１、制御部１２および通信インタフェース部１３を備え、コネクタ１０を介して車両４と接続される。 The charger / discharger 1 for an electric vehicle includes a power conversion unit 11, a control unit 12, and a communication interface unit 13, and is connected to the vehicle 4 via a connector 10.
　電力変換部１１は、制御部１２からの指示に従い、車両４に搭載されたＥＶ用蓄電池４１の充電動作または放電動作を行う。すなわち、電力変換部１１は、制御部１２から充電動作を行うよう指示を受けると、電力系統１００から供給される交流電力を直流電力に変換してＥＶ用蓄電池４１に出力する充電動作を行う。また、電力変換部１１は、制御部１２から放電動作を行うよう指示を受けると、車両４に搭載されたＥＶ用蓄電池４１が出力する直流電力を交流電力に変換して家庭内負荷５に供給する放電動作を行う。 The power conversion unit 11 charges or discharges the EV storage battery 41 mounted on the vehicle 4 in accordance with the instruction from the control unit 12. That is, when the power conversion unit 11 receives an instruction from the control unit 12 to perform a charging operation, the power conversion unit 11 performs a charging operation that converts the AC power supplied from the power system 100 into DC power and outputs it to the EV storage battery 41. Further, when the power conversion unit 11 receives an instruction from the control unit 12 to perform a discharge operation, the power conversion unit 11 converts the DC power output by the EV storage battery 41 mounted on the vehicle 4 into AC power and supplies it to the household load 5. Performs a discharge operation.
　制御部１２は、車両４の制御部４２から取得した情報と、通信インタフェース部１３経由で充放電制御装置３から受けた指令とに基づいて、電力変換部１１の動作を制御する。車両４の制御部４２から制御部１２が取得する情報には、ＥＶ用蓄電池４１が電力変換部１１に接続された状態か否かを示す接続状態情報、ＥＶ用蓄電池４１の残量を示す残量情報、ＥＶ用蓄電池４１が満充電状態か否かを示す満充電情報、ＥＶ用蓄電池４１が過放電状態か否かを示す過放電情報、などが含まれる。なお、制御部１２は、電気自動車用充放電器１と車両４とが接続されていない状態では車両４の制御部４２から情報を取得することができない。制御部１２は、上記の各種情報を取得するために、例えば、定期的に制御部４２との通信を試み、通信ができない場合には、ＥＶ用蓄電池４１が電力変換部１１に接続されていないと判断する。制御部１２は、制御部４２との通信が可能な場合、上記の各種情報を制御部４２から取得する。また、制御部１２は、車両４の制御部４２から取得した各種情報を、電気自動車用充放電器１の動作状態を示す情報とともに、通信インタフェース部１３を介して充放電制御装置３に提供する。 The control unit 12 controls the operation of the power conversion unit 11 based on the information acquired from the control unit 42 of the vehicle 4 and the command received from the charge / discharge control device 3 via the communication interface unit 13. The information acquired by the control unit 12 from the control unit 42 of the vehicle 4 includes connection state information indicating whether or not the EV storage battery 41 is connected to the power conversion unit 11, and a balance indicating the remaining amount of the EV storage battery 41. Includes quantity information, full charge information indicating whether the EV storage battery 41 is in a fully charged state, overdischarge information indicating whether the EV storage battery 41 is in an overdischarged state, and the like. Note that the control unit 12 cannot acquire information from the control unit 42 of the vehicle 4 when the charger / discharger 1 for the electric vehicle and the vehicle 4 are not connected. In order to acquire the above-mentioned various information, the control unit 12 periodically tries to communicate with the control unit 42, and if communication is not possible, the EV storage battery 41 is not connected to the power conversion unit 11. Judge. When the control unit 12 can communicate with the control unit 42, the control unit 12 acquires the above-mentioned various information from the control unit 42. Further, the control unit 12 provides various information acquired from the control unit 42 of the vehicle 4 to the charge / discharge control device 3 via the communication interface unit 13 together with information indicating the operating state of the charge / discharger 1 for the electric vehicle. ..
　制御部１２は、ＥＶ用蓄電池４１の充電実施条件が満たされている場合、充電動作を行うよう電力変換部１１を制御する。制御部１２は、例えば、ＥＶ用蓄電池４１の残量が予め定められた第１のしきい値を下回っている場合、電力変換部１１が充電動作を行うよう制御する。また、充電を行う時間帯が設定されている場合、例えば、電力の購入価格が安い夜間に充電を行うように設定されている場合、制御部１２は、ＥＶ用蓄電池４１の残量が第１のしきい値を下回り、かつ充電を行う時間帯のときに、充電動作を行うよう電力変換部１１を制御する。充電実施条件はこれらに限定されない。なお、制御部１２は、ＥＶ用蓄電池４１の充電実施条件が満たされている場合であっても、充放電制御装置３から動作停止の指示を受けた場合、充電動作を行わないよう電力変換部１１を制御する。 The control unit 12 controls the power conversion unit 11 so as to perform a charging operation when the charging execution condition of the EV storage battery 41 is satisfied. The control unit 12 controls, for example, the power conversion unit 11 to perform a charging operation when the remaining amount of the EV storage battery 41 is below a predetermined first threshold value. Further, when the charging time zone is set, for example, when the charging is set to be performed at night when the purchase price of electric power is low, the control unit 12 has the first remaining amount of the EV storage battery 41. The power conversion unit 11 is controlled so as to perform the charging operation when the value falls below the threshold value of the above and the charging operation is performed. Charging conditions are not limited to these. Even if the charging execution condition of the EV storage battery 41 is satisfied, the control unit 12 is a power conversion unit so as not to perform the charging operation when the charge / discharge control device 3 receives an instruction to stop the operation. 11 is controlled.
　また、制御部１２は、ＥＶ用蓄電池４１の放電実施条件が満たされている場合、放電動作を行うよう電力変換部１１を制御する。制御部１２は、例えば、ＥＶ用蓄電池４１の放電を指示する操作をユーザより受け付けた場合、電力変換部１１が放電動作を行うよう制御する。また、放電を行う時間帯が設定されている場合、制御部１２は、ＥＶ用蓄電池４１の残量が予め定められた第２のしきい値を上回り、かつ放電を行う時間帯のときに、電力変換部１１が放電動作を行うよう制御する。放電実施条件はこれらに限定されない。なお、制御部１２は、ＥＶ用蓄電池４１の放電実施条件が満たされている場合であっても、充放電制御装置３から動作停止の指示を受けた場合、放電動作を行わないよう電力変換部１１を制御する。 Further, the control unit 12 controls the power conversion unit 11 so as to perform a discharge operation when the discharge execution condition of the EV storage battery 41 is satisfied. For example, when the control unit 12 receives an operation instructing the discharge of the EV storage battery 41 from the user, the power conversion unit 11 controls the power conversion unit 11 to perform the discharge operation. When the time zone for discharging is set, the control unit 12 determines that the remaining amount of the EV storage battery 41 exceeds a predetermined second threshold value and the time zone for discharging is set. The power conversion unit 11 controls to perform the discharge operation. The discharge execution conditions are not limited to these. The control unit 12 is a power conversion unit so as not to perform the discharge operation when the charge / discharge control device 3 receives an instruction to stop the operation even when the discharge execution condition of the EV storage battery 41 is satisfied. 11 is controlled.
　通信インタフェース部１３は、充放電制御装置３との間で各種情報を送受信する。 The communication interface unit 13 transmits and receives various information to and from the charge / discharge control device 3.
　定置型蓄電池用充放電器２は、電力変換部２１、制御部２２および通信インタフェース部２３を備える。 The stationary storage battery charger / discharger 2 includes a power conversion unit 21, a control unit 22, and a communication interface unit 23.
　電力変換部２１は、制御部２２からの指示に従い、定置型蓄電池２４の充電動作または放電動作を行う。すなわち、電力変換部２１は、制御部２２から充電動作を行うよう指示を受けると、電力系統１００から供給される交流電力を直流電力に変換して定置型蓄電池２４に出力する充電動作を行う。また、電力変換部２１は、制御部２２から放電動作を行うよう指示を受けると、定置型蓄電池２４が出力する直流電力を交流電力に変換して家庭内負荷５に供給する放電動作を行う。 The power conversion unit 21 performs a charging operation or a discharging operation of the stationary storage battery 24 according to an instruction from the control unit 22. That is, when the power conversion unit 21 receives an instruction from the control unit 22 to perform a charging operation, the power conversion unit 21 performs a charging operation that converts the AC power supplied from the power system 100 into DC power and outputs it to the stationary storage battery 24. Further, when the power conversion unit 21 receives an instruction from the control unit 22 to perform a discharge operation, the power conversion unit 21 performs a discharge operation of converting the DC power output by the stationary storage battery 24 into AC power and supplying it to the household load 5.
　制御部２２は、定置型蓄電池２４の状態を示す情報と、通信インタフェース部２３経由で充放電制御装置３から受けた指令とに基づいて、電力変換部２１の動作を制御する。定置型蓄電池２４の状態を示す情報には、定置型蓄電池２４の残量を示す残量情報、定置型蓄電池２４が満充電状態か否かを示す満充電情報、定置型蓄電池２４が過放電状態か否かを示す過放電情報、などが含まれる。制御部２２は、例えば、電力変換部２１と定置型蓄電池２４とを接続する電力線の電圧を監視することにより、定置型蓄電池２４の状態を示す情報を取得する。また、制御部２２は、定置型蓄電池２４の状態を示す情報を、定置型蓄電池用充放電器２の動作状態を示す情報とともに、通信インタフェース部２３を介して充放電制御装置３に提供する。 The control unit 22 controls the operation of the power conversion unit 21 based on the information indicating the state of the stationary storage battery 24 and the command received from the charge / discharge control device 3 via the communication interface unit 23. The information indicating the state of the stationary storage battery 24 includes the remaining amount information indicating the remaining amount of the stationary storage battery 24, the fully charged information indicating whether the stationary storage battery 24 is in the fully charged state, and the stationary storage battery 24 in the over-discharged state. Over-discharge information indicating whether or not it is included, and the like. The control unit 22 acquires information indicating the state of the stationary storage battery 24 by, for example, monitoring the voltage of the power line connecting the power conversion unit 21 and the stationary storage battery 24. Further, the control unit 22 provides the charge / discharge control device 3 with the information indicating the state of the stationary storage battery 24 together with the information indicating the operating state of the stationary storage battery charge / discharger 2 via the communication interface unit 23.
　制御部２２は、定置型蓄電池２４の充電実施条件が満たされている場合、充電動作を行うよう電力変換部２１を制御する。制御部２２は、例えば、定置型蓄電池２４の残量が予め定められた第３のしきい値を下回っている場合、電力変換部２１が充電動作を行うよう制御する。また、充電を行う時間帯が設定されている場合、制御部２２は、定置型蓄電池２４の残量が第３のしきい値を下回り、かつ充電を行う時間帯のときに、充電動作を行うよう電力変換部２１を制御する。充電実施条件はこれらに限定されない。なお、制御部２２は、定置型蓄電池２４の充電実施条件が満たされている場合であっても、充放電制御装置３から動作停止の指示を受けた場合、充電動作を行わないよう電力変換部２１を制御する。 The control unit 22 controls the power conversion unit 21 so as to perform a charging operation when the charging execution condition of the stationary storage battery 24 is satisfied. The control unit 22 controls, for example, the power conversion unit 21 to perform a charging operation when the remaining amount of the stationary storage battery 24 is below a predetermined third threshold value. Further, when the charging time zone is set, the control unit 22 performs the charging operation when the remaining amount of the stationary storage battery 24 is below the third threshold value and the charging time zone is set. The power conversion unit 21 is controlled. Charging conditions are not limited to these. Even if the charging execution condition of the stationary storage battery 24 is satisfied, the control unit 22 is a power conversion unit so as not to perform the charging operation when the charge / discharge control device 3 receives an instruction to stop the operation. 21 is controlled.
　また、制御部２２は、定置型蓄電池２４の放電実施条件が満たされている場合、放電動作を行うよう電力変換部２１を制御する。制御部２２は、例えば、定置型蓄電池２４の放電を指示する操作をユーザより受け付けた場合、電力変換部２１が放電動作を行うよう制御する。また、放電を行う時間帯が設定されている場合、制御部２２は、放電を行う時間帯のときに、電力変換部２１が放電動作を行うよう制御する。放電実施条件はこれらに限定されない。なお、制御部２２は、定置型蓄電池２４の放電実施条件が満たされている場合であっても、充放電制御装置３から動作停止の指示を受けた場合、放電動作を行わないよう電力変換部２１を制御する。 Further, the control unit 22 controls the power conversion unit 21 so as to perform a discharge operation when the discharge execution condition of the stationary storage battery 24 is satisfied. The control unit 22 controls the power conversion unit 21 to perform a discharge operation when, for example, an operation for instructing the discharge of the stationary storage battery 24 is received from the user. Further, when the time zone for discharging is set, the control unit 22 controls the power conversion unit 21 to perform the discharging operation during the time zone for discharging. The discharge execution conditions are not limited to these. Even if the discharge execution condition of the stationary storage battery 24 is satisfied, the control unit 22 is a power conversion unit so as not to perform the discharge operation when the charge / discharge control device 3 receives an instruction to stop the operation. 21 is controlled.
　通信インタフェース部２３は、充放電制御装置３との間で各種情報を送受信する。 The communication interface unit 23 transmits and receives various information to and from the charge / discharge control device 3.
　図２は、実施の形態１にかかる充放電制御装置３の構成例を示す図である。充放電制御装置３は、動作制御部３１、スケジュール管理部３２、優先権管理部３３および通信インタフェース部３４を備える。 FIG. 2 is a diagram showing a configuration example of the charge / discharge control device 3 according to the first embodiment. The charge / discharge control device 3 includes an operation control unit 31, a schedule management unit 32, a priority management unit 33, and a communication interface unit 34.
　動作制御部３１は、スケジュール管理部３２が管理するスケジュールと、優先権管理部３３が管理する優先権と、通信インタフェース部３４が電気自動車用充放電器１および定置型蓄電池用充放電器２から取得した情報とに基づいて、電気自動車用充放電器１および定置型蓄電池用充放電器２の一方または双方に動作を指令するための運転指令を生成する。動作制御部３１は、運転指令を生成すると、通信インタフェース部３４を介して、電気自動車用充放電器１および定置型蓄電池用充放電器２の一方または双方に送信する。 The operation control unit 31 has a schedule managed by the schedule management unit 32, a priority managed by the priority management unit 33, and a communication interface unit 34 from the electric vehicle charger / discharger 1 and the stationary storage battery charger / discharger 2. Based on the acquired information, an operation command for instructing one or both of the electric vehicle charge / discharger 1 and the stationary storage battery charge / discharger 2 to operate is generated. When the operation control unit 31 generates an operation command, it transmits the operation command to one or both of the electric vehicle charger / discharger 1 and the stationary storage battery charger / discharger 2 via the communication interface unit 34.
　スケジュール管理部３２は、電気自動車用充放電器１および定置型蓄電池用充放電器２の運転スケジュールを管理する。運転スケジュールは、充電動作を実行するスケジュールおよび放電動作を実行するスケジュールを含む。運転スケジュールは、ユーザインタフェース部６を介してユーザより取得する。運転スケジュールは、例えば、電力系統１００から供給される電力の価格が安い時間帯に充電動作を行い、電力系統１００から供給される電力の価格が高い時間帯に放電動作を行い、蓄積された電力を家庭内負荷５で消費するように設定される。 The schedule management unit 32 manages the operation schedules of the charger / discharger 1 for electric vehicles and the charger / discharger 2 for stationary storage batteries. The operation schedule includes a schedule for executing the charging operation and a schedule for executing the discharging operation. The operation schedule is acquired from the user via the user interface unit 6. In the operation schedule, for example, the charging operation is performed during the time period when the price of the electric power supplied from the power system 100 is low, and the discharging operation is performed during the time period when the price of the electric power supplied from the power system 100 is high. Is set to be consumed by the domestic load 5.
　優先権管理部３３は、充放電制御装置３が制御する対象の複数の充放電器のうち、２つ以上が同時に動作する状態とならないように制御するための優先権情報を管理する。優先権情報は、動作を優先させる充放電器を示す情報である。優先権情報は、ユーザインタフェース部６を介してユーザより取得する。すなわち、２つ以上の充放電器の動作が競合する場合にどの充放電器の動作を優先させるかの指定はユーザが行う。 The priority management unit 33 manages priority information for controlling so that two or more of the plurality of target charge / discharge devices controlled by the charge / discharge control device 3 do not operate at the same time. The priority information is information indicating a charger / discharger that gives priority to operation. The priority information is acquired from the user via the user interface unit 6. That is, the user specifies which charge / discharger operation is prioritized when the operations of two or more charge / dischargers compete with each other.
　通信インタフェース部３４は、通信線を介して電気自動車用充放電器１および定置型蓄電池用充放電器２との間で各種情報を送受信する。 The communication interface unit 34 transmits and receives various information between the charger / discharger 1 for an electric vehicle and the charger / discharger 2 for a stationary storage battery via a communication line.
　ここで、充放電制御装置３のハードウェア構成について説明する。図３は、実施の形態１にかかる充放電制御装置３を実現するハードウェアの一例を示す図である。充放電制御装置３は、例えば、図３に示すプロセッサ９１、メモリ９２および通信回路９３を含んだハードウェアにより実現される。プロセッサ９１は、ＣＰＵ（Central　Processing　Unit、中央処理装置、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ、ＤＳＰ（Digital　Signal　Processor）ともいう）、システムＬＳＩ（Large　Scale　Integration）などである。また、メモリ９２は、ＲＡＭ（Random　Access　Memory）、ＲＯＭ（Read　Only　Memory）、フラッシュメモリー、ＥＰＲＯＭ（Erasable　Programmable　ＲＯＭ）、ＥＥＰＲＯＭ（登録商標）（Electrically　Erasable　Programmable　ＲＯＭ）などである。 Here, the hardware configuration of the charge / discharge control device 3 will be described. FIG. 3 is a diagram showing an example of hardware that realizes the charge / discharge control device 3 according to the first embodiment. The charge / discharge control device 3 is realized by, for example, hardware including the processor 91, the memory 92, and the communication circuit 93 shown in FIG. The processor 91 is a CPU (Central Processing Unit, central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, DSP (Digital Signal Processor)), system LSI (Large Scale Integration), and the like. The memory 92 includes RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EPROM (registered trademark) (Electrically Erasable Programmable ROM), and the like.
　充放電制御装置３の動作制御部３１、スケジュール管理部３２および優先権管理部３３は、プロセッサ９１およびメモリ９２により実現される。具体的には、動作制御部３１、スケジュール管理部３２および優先権管理部３３として動作するためのプログラムをメモリ９２に格納しておき、メモリ９２に格納されているプログラムをプロセッサ９１が読み出して実行することにより、動作制御部３１、スケジュール管理部３２および優先権管理部３３が実現される。また、通信インタフェース部３４は通信回路９３で実現される。 The operation control unit 31, the schedule management unit 32, and the priority management unit 33 of the charge / discharge control device 3 are realized by the processor 91 and the memory 92. Specifically, a program for operating as the operation control unit 31, the schedule management unit 32, and the priority management unit 33 is stored in the memory 92, and the processor 91 reads and executes the program stored in the memory 92. By doing so, the operation control unit 31, the schedule management unit 32, and the priority management unit 33 are realized. Further, the communication interface unit 34 is realized by the communication circuit 93.
　なお、図３は、汎用のプロセッサ９１およびメモリ９２と通信回路９３とを組み合わせて充放電制御装置３を実現する場合のハードウェア構成の例を示したものであるが、プロセッサ９１およびメモリ９２に相当する回路を専用の処理回路で実現するようにしてもよい。すなわち、動作制御部３１、スケジュール管理部３２および優先権管理部３３を専用の処理回路で実現するようにしてもよい。この場合、専用の処理回路としては、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ（Application　Specific　Integrated　Circuit）、ＦＰＧＡ（Field　Programmable　Gate　Array）、またはこれらを組み合わせたものが該当する。 Note that FIG. 3 shows an example of a hardware configuration in which the charge / discharge control device 3 is realized by combining the general-purpose processor 91 and the memory 92 with the communication circuit 93. The processor 91 and the memory 92 may be used. The corresponding circuit may be realized by a dedicated processing circuit. That is, the operation control unit 31, the schedule management unit 32, and the priority management unit 33 may be realized by a dedicated processing circuit. In this case, the dedicated processing circuit includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. Applicable to
　つづいて、充放電制御装置３が電気自動車用充放電器１および定置型蓄電池用充放電器２を制御する動作について、図４を用いて説明する。図４は、実施の形態１にかかる充放電制御装置３の動作の一例を示すフローチャートである。充放電制御装置３は、図４に示すフローチャートに従った動作を繰り返し実行する。なお、図４では、電気自動車用充放電器をＥＶ用充放電器と記載している。後述する各実施の形態の説明で使用するフローチャートでも同様に、電気自動車用充放電器をＥＶ用充放電器と記載する。 Subsequently, the operation in which the charge / discharge control device 3 controls the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery will be described with reference to FIG. FIG. 4 is a flowchart showing an example of the operation of the charge / discharge control device 3 according to the first embodiment. The charge / discharge control device 3 repeatedly executes the operation according to the flowchart shown in FIG. In FIG. 4, the charging / discharging device for an electric vehicle is described as an EV charging / discharging device. Similarly, in the flowchart used in the description of each embodiment described later, the charging / discharging device for electric vehicles is described as the charging / discharging device for EV.
　図４に示すように、充放電制御装置３は、まず、２つの充放電器が電力変換動作中か否かを確認する（ステップＳ１）。具体的には、動作制御部３１が、電気自動車用充放電器１および定置型蓄電池用充放電器２の双方が電力変換動作を行っている状態に該当するかを確認する。電力変換動作には、蓄電池の充電動作と、蓄電池の放電動作とが含まれる。よって、２つの充放電器が電力変換動作中となるケースには、電気自動車用充放電器１が充電動作中かつ定置型蓄電池用充放電器２が充電動作中であるケース＃１と、電気自動車用充放電器１が充電動作中かつ定置型蓄電池用充放電器２が放電動作中であるケース＃２と、電気自動車用充放電器１が放電動作中かつ定置型蓄電池用充放電器２が充電動作中であるケース＃３と、電気自動車用充放電器１が放電動作中かつ定置型蓄電池用充放電器２が放電動作中であるケース＃４とが該当する。 As shown in FIG. 4, the charge / discharge control device 3 first confirms whether or not the two charge / dischargers are in the power conversion operation (step S1). Specifically, the operation control unit 31 confirms whether or not both the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery correspond to the state in which the power conversion operation is performed. The power conversion operation includes a storage battery charging operation and a storage battery discharging operation. Therefore, in the case where the two charge / dischargers are in the power conversion operation, the case # 1 in which the charge / discharger 1 for the electric vehicle is in the charging operation and the charge / discharger 2 for the stationary storage battery is in the charging operation, and the case # 1 where the electricity is being charged. Case # 2 in which the charging / discharging device 1 for an automobile is in the charging operation and the charging / discharging device 2 for the stationary storage battery is in the discharging operation, and the charging / discharging device 1 for the electric vehicle is in the discharging operation and in the stationary storage battery 2 The case # 3 in which is in the charging operation and the case # 4 in which the electric vehicle charger / discharger 1 is in the discharging operation and the stationary storage battery charge / discharger 2 is in the discharging operation are applicable.
　２つの充放電器が電力変換動作中ではない場合、すなわち、少なくとも１つの充放電器が電力変換動作を行っていない場合（ステップＳ１：Ｎｏ）、充放電制御装置３は、図４に示す制御動作を終了する。 When the two charge / dischargers are not in the power conversion operation, that is, when at least one charge / discharger is not in the power conversion operation (step S1: No), the charge / discharge control device 3 controls the control shown in FIG. End the operation.
　２つの充放電器が電力変換動作中の場合（ステップＳ１：Ｙｅｓ）、充放電制御装置３は、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ２）。具体的には、動作制御部３１が、電気自動車用充放電器１の動作を優先させる設定がなされているかを確認する。優先権の設定が電気自動車用充放電器１である場合（ステップＳ２：Ｙｅｓ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させる（ステップＳ３）。具体的には、動作制御部３１が、動作停止を指示する運転指令を生成し、定置型蓄電池用充放電器２へ送信する。 When the two charge / dischargers are in the power conversion operation (step S1: Yes), the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for an electric vehicle (step S2). Specifically, the operation control unit 31 confirms whether the operation of the electric vehicle charger / discharger 1 is set to be prioritized. When the priority setting is the electric vehicle charge / discharger 1 (step S2: Yes), the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 (step S3). Specifically, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits it to the stationary storage battery charger / discharger 2.
　一方、優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ２：Ｎｏ）、すなわち、優先権の設定が定置型蓄電池用充放電器２である場合、充放電制御装置３は、電気自動車用充放電器１の動作を停止させる（ステップＳ４）。具体的には、動作制御部３１が、動作停止を指示する運転指令を生成し、電気自動車用充放電器１へ送信する。 On the other hand, when the priority setting is not the electric vehicle charge / discharger 1 (step S2: No), that is, when the priority setting is the stationary storage battery charge / discharger 2, the charge / discharge control device 3 The operation of the charger / discharger 1 for the electric vehicle is stopped (step S4). Specifically, the operation control unit 31 generates an operation command instructing the operation stop and transmits it to the electric vehicle charger / discharger 1.
　このように、本実施の形態にかかる蓄電システム２００において、充放電制御装置３は、電気自動車用充放電器１および定置型蓄電池用充放電器２の２つの充放電器の状態を定期的に確認し、双方が電力変換動作中の場合、優先権が設定されていない充放電器が動作を停止し、優先権が設定されている充放電器が動作を継続するように制御を行う。これにより、各充放電器が不要な放電および充電を行い蓄電池間で電力の移動が発生するのを防止できる。すなわち、電力の移動に伴うエネルギーのロスが発生するのを防止できる。また、複数の充放電器の動作が干渉して蓄電システム２００全体としての動作が不安定になるのを防止できる。また、充放電制御装置３は、ユーザが設定した優先権に従って充放電器の動作を制御するため、ユーザが希望する電力の利用用途に合わせて適切にエネルギーマネージメントを行うことができる。 As described above, in the power storage system 200 according to the present embodiment, the charge / discharge control device 3 periodically changes the state of the two charge / dischargers, the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery. Check and if both are in power conversion operation, control is performed so that the charger / discharger for which the priority is not set stops the operation and the charger / discharger for which the priority is set continues the operation. As a result, it is possible to prevent each charger / discharger from performing unnecessary discharge and charging and causing power transfer between storage batteries. That is, it is possible to prevent energy loss due to the movement of electric power. In addition, it is possible to prevent the operation of the plurality of charge / dischargers from interfering with each other and making the operation of the power storage system 200 as a whole unstable. Further, since the charge / discharge control device 3 controls the operation of the charge / discharger according to the priority set by the user, the energy management can be appropriately performed according to the usage of the electric power desired by the user.
　なお、本実施の形態では、充放電制御装置３が動作を制御する対象の充放電器が電気自動車用充放電器１および定置型蓄電池用充放電器２の２種類の充放電器である場合について説明したが、同じ種類の２つの充放電器を制御する構成であってもよい。例えば、家庭内に定置型蓄電池が２台設置され、これらの定置型蓄電池の充放電を行う充放電器も２台設置され、これら２台の充放電器の動作を充放電制御装置３が制御してもよい。この場合も、充放電制御装置３は、優先権の設定に従い、２台の充放電器が同時に電力変換動作を行っている場合は優先権が設定されていない充放電器の動作を停止させる。すなわち、充放電制御装置３は、優先権が設定された充放電器の動作を継続させる。 In the present embodiment, the charging / discharging device whose operation is controlled by the charging / discharging control device 3 is two types of charging / discharging devices, the charging / discharging device 1 for an electric vehicle and the charging / discharging device 2 for a stationary storage battery. However, the configuration may be such that two charge / dischargers of the same type are controlled. For example, two stationary storage batteries are installed in the home, two charge / dischargers for charging / discharging these stationary storage batteries are also installed, and the charge / discharge control device 3 controls the operation of these two charge / dischargers. You may. Also in this case, the charge / discharge control device 3 stops the operation of the charge / discharger for which the priority is not set when the two charge / dischargers are performing the power conversion operation at the same time according to the setting of the priority. That is, the charge / discharge control device 3 continues the operation of the charge / discharger for which the priority has been set.
　また、本実施の形態では、充放電制御装置３が動作を制御する対象の充放電器が２台の場合について説明したが、制御する対象の充放電器が３台以上の場合も同様に、複数の充放電器が同時に電力変換動作を行うことがないように制御する。この場合、複数の充放電器のそれぞれには優先順位を設定しておき、充放電制御装置３は、複数の充放電器が同時に電力変換動作を行う状態を検出すると、電力変換動作中の充放電器のうち、優先順位が最も高いもの以外の充放電器の動作を停止させる。 Further, in the present embodiment, the case where the charge / discharge control device 3 controls the operation of two charge / dischargers has been described, but similarly, the case where the charge / discharger to be controlled has three or more units is also the same. Control so that multiple chargers and dischargers do not perform power conversion operations at the same time. In this case, a priority is set for each of the plurality of charge / dischargers, and when the charge / discharge control device 3 detects a state in which the plurality of charge / dischargers simultaneously perform the power conversion operation, the charge / discharger during the power conversion operation is charged. Of the dischargers, the charge / discharger other than the one with the highest priority is stopped.
　また、本実施の形態では、電気自動車用充放電器１および定置型蓄電池用充放電器２の制御は、制御部１２、制御部２２および充放電制御装置３を用いた場合について説明したが、これらの処理の一部またはすべてをＨＥＭＳ（Home　Energy　Management　System）コントローラ等の外部装置により実現してもよい。 Further, in the present embodiment, the control of the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery has been described when the control unit 12, the control unit 22, and the charge / discharge control device 3 are used. Part or all of these processes may be realized by an external device such as a HEMS (Home Energy Management System) controller.
実施の形態２．
　つづいて、実施の形態２について説明する。実施の形態２にかかる蓄電システムの構成は実施の形態１と同様である。また、蓄電システムを構成する各装置の構成も実施の形態１と同様である。そのため、本実施の形態においては図１および図２を使用して説明を行う。本実施の形態にかかる充放電制御装置３は、スケジュール管理部３２で管理するスケジュールも考慮しつつ、電気自動車用充放電器１および定置型蓄電池用充放電器２の動作を説明する。 Embodiment 2.
Next, the second embodiment will be described. The configuration of the power storage system according to the second embodiment is the same as that of the first embodiment. Further, the configuration of each device constituting the power storage system is the same as that of the first embodiment. Therefore, in this embodiment, the description will be given with reference to FIGS. 1 and 2. The charge / discharge control device 3 according to the present embodiment will explain the operation of the charge / discharger 1 for an electric vehicle and the charge / discharger 2 for a stationary storage battery while also considering the schedule managed by the schedule management unit 32.
　図５は、実施の形態２にかかる充放電制御装置３の第１の動作例を示すフローチャートである。図５に示すフローチャートに従った動作は、放電動作を行うようにスケジュールされている時間帯において実行される。充放電制御装置３は、図５に示すフローチャートに従った動作を、放電動作を行うようにスケジュールされた時間帯において繰り返し実行する。 FIG. 5 is a flowchart showing a first operation example of the charge / discharge control device 3 according to the second embodiment. The operation according to the flowchart shown in FIG. 5 is executed at a time zone scheduled to perform the discharge operation. The charge / discharge control device 3 repeatedly executes the operation according to the flowchart shown in FIG. 5 in a time zone scheduled to perform the discharge operation.
　充放電制御装置３は、まず、ＥＶの接続があるか、すなわち、車両４のＥＶ用蓄電池４１が電気自動車用充放電器１に接続されているかを確認する（ステップＳ１１）。ＥＶの接続が無い場合（ステップＳ１１：Ｎｏ）、充放電制御装置３は、定置型蓄電池２４を放電させる（ステップＳ１２）。具体的には、動作制御部３１が、放電動作を指示する運転指令を生成し、定置型蓄電池用充放電器２へ送信する。 The charge / discharge control device 3 first confirms whether the EV is connected, that is, whether the EV storage battery 41 of the vehicle 4 is connected to the electric vehicle charge / discharger 1 (step S11). When there is no EV connection (step S11: No), the charge / discharge control device 3 discharges the stationary storage battery 24 (step S12). Specifically, the operation control unit 31 generates an operation command instructing the discharge operation and transmits it to the stationary storage battery charger / discharger 2.
　一方、ＥＶの接続がある場合（ステップＳ１１：Ｙｅｓ）、充放電制御装置３は、２つの充放電器が電力変換動作中か否かを確認する（ステップＳ１３）。このステップＳ１３の処理は、図４に示したステップＳ１と同様の処理である。 On the other hand, when there is an EV connection (step S11: Yes), the charge / discharge control device 3 confirms whether or not the two charge / dischargers are in the power conversion operation (step S13). The process of step S13 is the same as the process of step S1 shown in FIG.
　２つの充放電器が電力変換動作中の場合（ステップＳ１３：Ｙｅｓ）、充放電制御装置３は、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ１４）。このステップＳ１４の処理は、図４に示したステップＳ２と同様の処理である。優先権の設定が電気自動車用充放電器１である場合（ステップＳ１４：Ｙｅｓ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を放電させる（ステップＳ１５）。具体的には、動作制御部３１が、動作停止を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信するとともに、放電動作を指示する運転指令を生成して電気自動車用充放電器１へ送信する。これに対して、優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ１４：Ｎｏ）、すなわち、優先権の設定が定置型蓄電池用充放電器２である場合、充放電制御装置３は、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を放電させる（ステップＳ１６）。具体的には、動作制御部３１が、動作停止を指示する運転指令を生成して電気自動車用充放電器１へ送信するとともに、放電動作を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信する。 When the two charge / dischargers are in the power conversion operation (step S13: Yes), the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S14). The process of step S14 is the same as the process of step S2 shown in FIG. When the priority is set to the electric vehicle charge / discharger 1 (step S14: Yes), the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and discharges the EV storage battery 41. (Step S15). Specifically, the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the discharge operation to charge the electric vehicle. It is transmitted to the discharger 1. On the other hand, when the priority setting is not the electric vehicle charge / discharger 1 (step S14: No), that is, when the priority setting is the stationary storage battery charge / discharger 2, the charge / discharge control device 3 stops the operation of the charger / discharger 1 for an electric vehicle and discharges the stationary storage battery 24 (step S16). Specifically, the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the electric vehicle charge / discharger 1, and also generates an operation command instructing the discharge operation to charge the stationary storage battery. It is transmitted to the discharger 2.
　一方、２つの充放電器が電力変換動作中ではない場合（ステップＳ１３：Ｎｏ）、充放電制御装置３は、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ１７）。優先権の設定が電気自動車用充放電器１である場合（ステップＳ１７：Ｙｅｓ）、充放電制御装置３は、ＥＶ用蓄電池４１が放電可能か否かを確認する（ステップＳ１８）。充放電制御装置３の動作制御部３１は、例えば、ＥＶ用蓄電池４１の残量がしきい値以上の場合に放電可能と判断する。しきい値は、ユーザが電気自動車の使用予定などを考慮して予め設定しておくものとする。ユーザがしきい値を設定しない場合はデフォルト値をしきい値とする。 On the other hand, when the two charge / dischargers are not in the power conversion operation (step S13: No), the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S17). ). When the priority setting is the electric vehicle charge / discharger 1 (step S17: Yes), the charge / discharge control device 3 confirms whether or not the EV storage battery 41 can be discharged (step S18). The operation control unit 31 of the charge / discharge control device 3 determines that discharge is possible, for example, when the remaining amount of the EV storage battery 41 is equal to or greater than the threshold value. The threshold value shall be set in advance by the user in consideration of the usage schedule of the electric vehicle and the like. If the user does not set a threshold, the default value is set as the threshold.
　ＥＶ用蓄電池４１が放電可能な場合（ステップＳ１８：Ｙｅｓ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を放電させる（ステップＳ１９）。すなわち、動作制御部３１が、動作停止を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信するとともに、放電動作を指示する運転指令を生成して電気自動車用充放電器１へ送信する。なお、ステップＳ１９を実行する時点で定置型蓄電池用充放電器２が動作を停止している場合、動作制御部３１は動作停止を指示する運転指令を定置型蓄電池用充放電器２へ送信しなくてもよい。 When the EV storage battery 41 can be discharged (step S18: Yes), the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and discharges the EV storage battery 41 (step S19). That is, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the discharge operation to generate the charge / discharger 1 for the electric vehicle. Send to. If the operation of the stationary storage battery charger / discharger 2 is stopped at the time of executing step S19, the operation control unit 31 transmits an operation command instructing the operation stop to the stationary storage battery charger / discharger 2. It does not have to be.
　一方、ＥＶ用蓄電池４１が放電可能ではない場合（ステップＳ１８：Ｎｏ）、充放電制御装置３は、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を放電させる（ステップＳ２０）。すなわち、動作制御部３１が、動作停止を指示する運転指令を生成して電気自動車用充放電器１へ送信するとともに、放電動作を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信する。なお、ステップＳ２０を実行する時点で電気自動車用充放電器１が動作を停止している場合、動作制御部３１は動作停止を指示する運転指令を電気自動車用充放電器１へ送信しなくてもよい。 On the other hand, when the EV storage battery 41 is not dischargeable (step S18: No), the charge / discharge control device 3 stops the operation of the electric vehicle charge / discharger 1 and discharges the stationary storage battery 24 (step S20). .. That is, the operation control unit 31 generates an operation command for instructing the operation stop and transmits it to the electric vehicle charge / discharger 1, and also generates an operation command for instructing the discharge operation to generate the operation command for the stationary storage battery. Send to. If the electric vehicle charger / discharger 1 is stopped at the time of executing step S20, the operation control unit 31 does not send an operation command instructing the operation stop to the electric vehicle charger / discharger 1. May be good.
　また、優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ１７：Ｎｏ）、充放電制御装置３は、定置型蓄電池２４が放電可能か否かを確認する（ステップＳ２１）。充放電制御装置３の動作制御部３１は、例えば、定置型蓄電池２４の残量がしきい値以上の場合に放電可能と判断する。しきい値は、予め設定された値を使用してもよいし、ユーザが設定した値を使用してもよい。 If the priority is not set for the electric vehicle charge / discharger 1 (step S17: No), the charge / discharge control device 3 confirms whether or not the stationary storage battery 24 can be discharged (step S21). The operation control unit 31 of the charge / discharge control device 3 determines that discharge is possible, for example, when the remaining amount of the stationary storage battery 24 is equal to or greater than the threshold value. As the threshold value, a preset value may be used, or a user-set value may be used.
　定置型蓄電池２４が放電可能な場合（ステップＳ２１：Ｙｅｓ）、充放電制御装置３は、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を放電させる（ステップＳ２２）。一方、定置型蓄電池２４が放電可能ではない場合（ステップＳ２１：Ｎｏ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を放電させる（ステップＳ２３）。 When the stationary storage battery 24 can be discharged (step S21: Yes), the charge / discharge control device 3 stops the operation of the charge / discharger 1 for the electric vehicle and discharges the stationary storage battery 24 (step S22). On the other hand, when the stationary storage battery 24 is not dischargeable (step S21: No), the charge / discharge control device 3 stops the operation of the stationary storage battery charger / discharger 2 and discharges the EV storage battery 41 (step S23). ).
　図６は、実施の形態２にかかる充放電制御装置３の第２の動作例を示すフローチャートである。図６に示すフローチャートに従った動作は、充電動作を行うようにスケジュールされている時間帯において実行される。充放電制御装置３は、図６に示すフローチャートに従った動作を、充電動作を行うようにスケジュールされた時間帯において繰り返し実行する。 FIG. 6 is a flowchart showing a second operation example of the charge / discharge control device 3 according to the second embodiment. The operation according to the flowchart shown in FIG. 6 is executed at a time zone scheduled to perform the charging operation. The charge / discharge control device 3 repeatedly executes the operation according to the flowchart shown in FIG. 6 in a time zone scheduled to perform the charging operation.
　充放電制御装置３は、まず、ＥＶの接続があるか、すなわち、車両４のＥＶ用蓄電池４１が電気自動車用充放電器１に接続されているかを確認する（ステップＳ３１）。ＥＶの接続が無い場合（ステップＳ３１：Ｎｏ）、充放電制御装置３は、定置型蓄電池２４を充電させる（ステップＳ３２）。具体的には、動作制御部３１が、充電動作を指示する運転指令を生成し、定置型蓄電池用充放電器２へ送信する。 The charge / discharge control device 3 first confirms whether the EV is connected, that is, whether the EV storage battery 41 of the vehicle 4 is connected to the electric vehicle charge / discharger 1 (step S31). When there is no EV connection (step S31: No), the charge / discharge control device 3 charges the stationary storage battery 24 (step S32). Specifically, the operation control unit 31 generates an operation command instructing the charging operation and transmits it to the stationary storage battery charger / discharger 2.
　一方、ＥＶの接続がある場合（ステップＳ３１：Ｙｅｓ）、充放電制御装置３は、２つの充放電器が電力変換動作中か否かを確認する（ステップＳ３３）。このステップＳ３３の処理は、図４に示したステップＳ１および図５に示したステップＳ１３と同様の処理である。 On the other hand, when there is an EV connection (step S31: Yes), the charge / discharge control device 3 confirms whether or not the two charge / dischargers are in the power conversion operation (step S33). The process of step S33 is the same as that of step S1 shown in FIG. 4 and step S13 shown in FIG.
　２つの充放電器が電力変換動作中の場合（ステップＳ３３：Ｙｅｓ）、充放電制御装置３は、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ３４）。このステップＳ３４の処理は、図４に示したステップＳ２および図５に示したステップＳ１４と同様の処理である。優先権の設定が電気自動車用充放電器１である場合（ステップＳ３４：Ｙｅｓ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を充電させる（ステップＳ３５）。具体的には、動作制御部３１が、動作停止を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信するとともに、充電動作を指示する運転指令を生成して電気自動車用充放電器１へ送信する。これに対して、優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ３４：Ｎｏ）、すなわち、優先権の設定が定置型蓄電池用充放電器２である場合、充放電制御装置３は、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を充電させる（ステップＳ３６）。具体的には、動作制御部３１が、動作停止を指示する運転指令を生成して電気自動車用充放電器１へ送信するとともに、充電動作を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信する。 When the two charge / dischargers are in the power conversion operation (step S33: Yes), the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S34). The process of step S34 is the same as that of step S2 shown in FIG. 4 and step S14 shown in FIG. When the priority setting is the electric vehicle charge / discharger 1 (step S34: Yes), the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and charges the EV storage battery 41. (Step S35). Specifically, the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the charging operation to charge the electric vehicle. It is transmitted to the discharger 1. On the other hand, when the priority setting is not the electric vehicle charge / discharger 1 (step S34: No), that is, when the priority setting is the stationary storage battery charge / discharger 2, the charge / discharge control device In step 3, the operation of the charger / discharger 1 for an electric vehicle is stopped, and the stationary storage battery 24 is charged (step S36). Specifically, the operation control unit 31 generates an operation command instructing the operation to stop and transmits it to the electric vehicle charge / discharger 1, and also generates an operation command instructing the charging operation to charge the stationary storage battery. It is transmitted to the discharger 2.
　一方、２つの充放電器が電力変換動作中ではない場合（ステップＳ３３：Ｎｏ）、充放電制御装置３は、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ３７）。優先権の設定が電気自動車用充放電器１である場合（ステップＳ３７：Ｙｅｓ）、充放電制御装置３は、ＥＶ用蓄電池４１が充電可能か否かを確認する（ステップＳ３８）。充放電制御装置３の動作制御部３１は、例えば、ＥＶ用蓄電池４１が満充電状態ではない場合に充電可能と判断する。 On the other hand, when the two charge / dischargers are not in the power conversion operation (step S33: No), the charge / discharge control device 3 confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S37). ). When the priority setting is the electric vehicle charge / discharger 1 (step S37: Yes), the charge / discharge control device 3 confirms whether or not the EV storage battery 41 can be charged (step S38). The operation control unit 31 of the charge / discharge control device 3 determines, for example, that the EV storage battery 41 can be charged when it is not in the fully charged state.
　ＥＶ用蓄電池４１が充電可能な場合（ステップＳ３８：Ｙｅｓ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を充電させる（ステップＳ３９）。すなわち、動作制御部３１が、動作停止を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信するとともに、充電動作を指示する運転指令を生成して電気自動車用充放電器１へ送信する。なお、ステップＳ３９を実行する時点で定置型蓄電池用充放電器２が動作を停止している場合、動作制御部３１は動作停止を指示する運転指令を定置型蓄電池用充放電器２へ送信しなくてもよい。 When the EV storage battery 41 can be charged (step S38: Yes), the charge / discharge control device 3 stops the operation of the stationary storage battery charge / discharger 2 and charges the EV storage battery 41 (step S39). That is, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits it to the stationary storage battery charger / discharger 2, and also generates an operation command instructing the charging operation to generate the charge / discharger 1 for the electric vehicle. Send to. If the stationary storage battery charger / discharger 2 has stopped operating at the time of executing step S39, the operation control unit 31 transmits an operation command instructing the stationary storage battery charger / discharger 2 to stop the operation. It does not have to be.
　一方、ＥＶ用蓄電池４１が充電可能ではない場合（ステップＳ３８：Ｎｏ）、充放電制御装置３は、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を充電させる（ステップＳ４０）。すなわち、動作制御部３１が、動作停止を指示する運転指令を生成して電気自動車用充放電器１へ送信するとともに、充電動作を指示する運転指令を生成して定置型蓄電池用充放電器２へ送信する。なお、ステップＳ４０を実行する時点で電気自動車用充放電器１が動作を停止している場合、動作制御部３１は動作停止を指示する運転指令を電気自動車用充放電器１へ送信しなくてもよい。 On the other hand, when the EV storage battery 41 is not rechargeable (step S38: No), the charge / discharge control device 3 stops the operation of the electric vehicle charge / discharger 1 and charges the stationary storage battery 24 (step S40). .. That is, the operation control unit 31 generates an operation command instructing the operation to be stopped and transmits the operation command to the electric vehicle charge / discharger 1, and also generates an operation command instructing the charging operation to generate the charge / discharger 2 for the stationary storage battery. Send to. If the electric vehicle charger / discharger 1 is stopped at the time of executing step S40, the operation control unit 31 does not send an operation command instructing the operation stop to the electric vehicle charger / discharger 1. May be good.
　また、優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ３７：Ｎｏ）、充放電制御装置３は、定置型蓄電池２４が充電可能か否かを確認する（ステップＳ４１）。充放電制御装置３の動作制御部３１は、例えば、定置型蓄電池２４が満充電状態ではない場合に充電可能と判断する。 Further, when the priority setting is not the charge / discharger 1 for the electric vehicle (step S37: No), the charge / discharge control device 3 confirms whether or not the stationary storage battery 24 can be charged (step S41). The operation control unit 31 of the charge / discharge control device 3 determines, for example, that the stationary storage battery 24 can be charged when it is not in the fully charged state.
　定置型蓄電池２４が充電可能な場合（ステップＳ４１：Ｙｅｓ）、充放電制御装置３は、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を充電させる（ステップＳ４２）。一方、定置型蓄電池２４が充電可能ではない場合（ステップＳ４１：Ｎｏ）、充放電制御装置３は、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を充電させる（ステップＳ４３）。 When the stationary storage battery 24 can be charged (step S41: Yes), the charge / discharge control device 3 stops the operation of the charge / discharger 1 for the electric vehicle and charges the stationary storage battery 24 (step S42). On the other hand, when the stationary storage battery 24 is not rechargeable (step S41: No), the charge / discharge control device 3 stops the operation of the stationary storage battery charger / discharger 2 and charges the EV storage battery 41 (step S43). ).
　なお、充放電制御装置３は、放電動作を行うようにスケジュールされた時間帯および充電動作を行うようにスケジュールされた時間帯のいずれにも該当しない時間帯においては、実施の形態１で説明した制御動作、すなわち、図４のフローチャートに従った制御動作を繰り返し実行する。 The charge / discharge control device 3 has been described in the first embodiment in a time zone that does not correspond to any of the time zone scheduled to perform the discharge operation and the time zone scheduled to perform the charge operation. The control operation, that is, the control operation according to the flowchart of FIG. 4 is repeatedly executed.
　以上のように、本実施の形態にかかる蓄電システム２００において、充放電制御装置３は、放電動作を行うようにスケジュールされた時間帯において、電気自動車用充放電器１および定置型蓄電池用充放電器２の２つの充放電器の状態を定期的に確認し、優先権の設定状態および放電動作が可能な状態かの確認結果に基づいて、いずれか一つの充放電器が放電動作を行うよう、各充放電器の動作を制御する。また、充放電制御装置３は、充電動作を行うようにスケジュールされた時間帯において、電気自動車用充放電器１および定置型蓄電池用充放電器２の２つの充放電器の状態を定期的に確認し、優先権の設定状態および充電動作が可能な状態かの確認結果に基づいて、いずれか一つの充放電器が充電動作を行うよう、各充放電器の動作を制御する。これにより、放電動作および充電動作がスケジュールされている場合においても、各充放電器が不要な放電および充電を行い蓄電池間で電力の移動が発生するのを防止できる。また、複数の充放電器の動作が干渉して蓄電システム２００全体としての動作が不安定になるのを防止できる。 As described above, in the power storage system 200 according to the present embodiment, the charge / discharge control device 3 charges / discharges the electric vehicle charge / discharger 1 and the stationary storage battery during the time zone scheduled to perform the discharge operation. Periodically check the status of the two chargers and dischargers of the electric appliance 2, and based on the confirmation result of the priority setting status and the status where the discharge operation is possible, one of the charge / dischargers should perform the discharge operation. , Control the operation of each charger / discharger. Further, the charge / discharge control device 3 periodically changes the state of the two charge / dischargers, the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery, during the time period scheduled to perform the charging operation. Based on the confirmation result of checking and confirming whether the priority setting state and the charging operation are possible, the operation of each charging / discharging device is controlled so that any one of the charging / discharging devices performs the charging operation. As a result, even when the discharge operation and the charge operation are scheduled, it is possible to prevent each charge / discharger from performing unnecessary discharge and charge and causing power transfer between the storage batteries. In addition, it is possible to prevent the operation of the plurality of charge / dischargers from interfering with each other and making the operation of the power storage system 200 as a whole unstable.
実施の形態３．
　図７は、本発明の実施の形態３にかかる蓄電システムの構成例を示す図である。実施の形態３にかかる蓄電システム２００ａは、実施の形態１にかかる蓄電システム２００に太陽光発電装置７および電力センサー８を追加し、充放電制御装置３を充放電制御装置３ａに置き換えた構成である。本実施の形態にかかる充放電制御装置３ａは、実施の形態１にかかる充放電制御装置３と同様の構成（図２参照）であるが、制御動作が充放電制御装置３と異なる。具体的には、動作制御部３１の動作が実施の形態１にかかる充放電制御装置３の動作制御部３１とは異なる。 Embodiment 3.
FIG. 7 is a diagram showing a configuration example of the power storage system according to the third embodiment of the present invention. The power storage system 200a according to the third embodiment has a configuration in which the photovoltaic power generation device 7 and the power sensor 8 are added to the power storage system 200 according to the first embodiment, and the charge / discharge control device 3 is replaced with the charge / discharge control device 3a. is there. The charge / discharge control device 3a according to the present embodiment has the same configuration as the charge / discharge control device 3 according to the first embodiment (see FIG. 2), but the control operation is different from the charge / discharge control device 3. Specifically, the operation of the operation control unit 31 is different from that of the operation control unit 31 of the charge / discharge control device 3 according to the first embodiment.
　本実施の形態では、実施の形態１，２と共通の構成および動作については説明を省略し、実施の形態１，２とは異なる構成および動作について説明を行う。また、実施の形態１，２で説明した処理と同様の処理については詳細な説明を省略する。 In the present embodiment, the description of the configuration and operation common to the first and second embodiments will be omitted, and the configuration and operation different from those of the first and second embodiments will be described. Further, detailed description of the same processing as that described in the first and second embodiments will be omitted.
　太陽光発電装置７の内部構成については説明を省略するが、太陽光発電装置７は、太陽光を直流電力に変換し、さらに、直流電力を交流電力に変換し、家庭内負荷５が接続される電力線に出力する。 Although the description of the internal configuration of the photovoltaic power generation device 7 will be omitted, the photovoltaic power generation device 7 converts sunlight into DC power, further converts DC power into AC power, and connects the household load 5. Output to the power line.
　電力センサー８は、電力系統１００と蓄電システム２００ａとの間の潮流電力を測定し、測定結果を充放電制御装置３ａに出力する。 The power sensor 8 measures the power flow between the power system 100 and the power storage system 200a, and outputs the measurement result to the charge / discharge control device 3a.
　充放電制御装置３ａは、電力センサー８による潮流電力の測定結果と、電気自動車用充放電器１および定置型蓄電池用充放電器２の２つの充放電器の状態と、優先権の設定状態とに基づいて、電気自動車用充放電器１および定置型蓄電池用充放電器２の動作を制御する。 The charge / discharge control device 3a includes the measurement result of the tidal current power by the power sensor 8, the state of the two charge / dischargers of the charge / discharger 1 for the electric vehicle and the charge / discharger 2 for the stationary storage battery, and the priority setting state. Controls the operation of the charger / discharger 1 for electric vehicles and the charger / discharger 2 for stationary storage batteries based on the above.
　図８および図９は、実施の形態３にかかる充放電制御装置３ａの動作の一例を示すフローチャートである。充放電制御装置３ａは、図８および図９に示すフローチャートに従った動作を繰り返し実行する。図８および図９に示すフローチャートに従った動作は、放電動作を行うようにスケジュールされている時間帯において繰り返し実行される。 8 and 9 are flowcharts showing an example of the operation of the charge / discharge control device 3a according to the third embodiment. The charge / discharge control device 3a repeatedly executes the operation according to the flowcharts shown in FIGS. 8 and 9. The operations according to the flowcharts shown in FIGS. 8 and 9 are repeatedly executed during the time period scheduled to perform the discharge operation.
　充放電制御装置３ａは、まず、ＥＶの接続があるか、すなわち、車両４のＥＶ用蓄電池４１が電気自動車用充放電器１に接続されているかを確認する（ステップＳ５１）。ＥＶの接続が無い場合（ステップＳ５１：Ｎｏ）、充放電制御装置３ａは、逆潮流があるかを確認する（ステップＳ５２）。逆潮流がある場合（ステップＳ５２：Ｙｅｓ）、充放電制御装置３ａは、定置型蓄電池２４を充電させる（ステップＳ５３）。一方、逆潮流が無い場合（ステップＳ５２：Ｎｏ）、充放電制御装置３ａは、定置型蓄電池２４を放電させる（ステップＳ５４）。 The charge / discharge control device 3a first confirms whether the EV is connected, that is, whether the EV storage battery 41 of the vehicle 4 is connected to the electric vehicle charge / discharger 1 (step S51). When there is no EV connection (step S51: No), the charge / discharge control device 3a confirms whether there is reverse power flow (step S52). When there is reverse power flow (step S52: Yes), the charge / discharge control device 3a charges the stationary storage battery 24 (step S53). On the other hand, when there is no reverse power flow (step S52: No), the charge / discharge control device 3a discharges the stationary storage battery 24 (step S54).
　また、ＥＶの接続がある場合（ステップＳ５１：Ｙｅｓ）、充放電制御装置３ａは、２つの充放電器が電力変換動作中か否かを確認する（ステップＳ５５）。２つの充放電器が電力変換動作中の場合（ステップＳ５５：Ｙｅｓ）、充放電制御装置３ａは、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ５６）。優先権の設定が電気自動車用充放電器１である場合（ステップＳ５６：Ｙｅｓ）、充放電制御装置３ａは、定置型蓄電池用充放電器２の動作を停止させる（ステップＳ５７）。一方、優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ５６：Ｎｏ）、充放電制御装置３ａは、電気自動車用充放電器１の動作を停止させる（ステップＳ５８）。 If there is an EV connection (step S51: Yes), the charge / discharge control device 3a confirms whether or not the two charge / dischargers are in the power conversion operation (step S55). When the two charge / dischargers are in the power conversion operation (step S55: Yes), the charge / discharge control device 3a confirms whether or not the priority setting is the charge / discharger 1 for an electric vehicle (step S56). When the priority is set to the electric vehicle charge / discharger 1 (step S56: Yes), the charge / discharge control device 3a stops the operation of the stationary storage battery charge / discharger 2 (step S57). On the other hand, when the priority is not set for the electric vehicle charge / discharger 1 (step S56: No), the charge / discharge control device 3a stops the operation of the electric vehicle charge / discharger 1 (step S58).
　また、２つの充放電器が電力変換動作中ではない場合（ステップＳ５５：Ｎｏ）、充放電制御装置３ａは、逆潮流があるかを確認する（ステップＳ５９）。逆潮流がある場合（ステップＳ５９：Ｙｅｓ）、充放電制御装置３ａは、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ６０）。 Further, when the two charge / dischargers are not in the power conversion operation (step S55: No), the charge / discharge control device 3a confirms whether or not there is reverse power flow (step S59). When there is reverse power flow (step S59: Yes), the charge / discharge control device 3a confirms whether or not the priority setting is the charge / discharger 1 for the electric vehicle (step S60).
　優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ６０：Ｎｏ）、充放電制御装置３ａは、定置型蓄電池２４が充電可能か否かを確認する（ステップＳ６４）。定置型蓄電池２４が充電可能な場合（ステップＳ６４：Ｙｅｓ）、充放電制御装置３ａは、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を充電させる（ステップＳ６５）。一方、定置型蓄電池２４が充電可能ではない場合（ステップＳ６４：Ｎｏ）、充放電制御装置３ａは、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を充電させる（ステップＳ６６）。 When the priority setting is not the charge / discharger 1 for the electric vehicle (step S60: No), the charge / discharge control device 3a confirms whether or not the stationary storage battery 24 can be charged (step S64). When the stationary storage battery 24 can be charged (step S64: Yes), the charge / discharge control device 3a stops the operation of the charge / discharger 1 for the electric vehicle and charges the stationary storage battery 24 (step S65). On the other hand, when the stationary storage battery 24 is not rechargeable (step S64: No), the charge / discharge control device 3a stops the operation of the stationary storage battery charger / discharger 2 and charges the EV storage battery 41 (step S66). ).
　これに対して、優先権の設定が電気自動車用充放電器１の場合（ステップＳ６０：Ｙｅｓ）、充放電制御装置３ａは、ＥＶ用蓄電池４１が充電可能か否かを確認する（ステップＳ６１）。ＥＶ用蓄電池４１が充電可能な場合（ステップＳ６１：Ｙｅｓ）、充放電制御装置３ａは、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を充電させる（ステップＳ６２）。一方、ＥＶ用蓄電池４１が充電可能ではない場合（ステップＳ６１：Ｎｏ）、充放電制御装置３ａは、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を充電させる（ステップＳ６３）。 On the other hand, when the priority is set for the electric vehicle charge / discharger 1 (step S60: Yes), the charge / discharge control device 3a confirms whether or not the EV storage battery 41 can be charged (step S61). .. When the EV storage battery 41 can be charged (step S61: Yes), the charge / discharge control device 3a stops the operation of the stationary storage battery charge / discharger 2 to charge the EV storage battery 41 (step S62). On the other hand, when the EV storage battery 41 is not rechargeable (step S61: No), the charge / discharge control device 3a stops the operation of the electric vehicle charge / discharger 1 and charges the stationary storage battery 24 (step S63). ..
　また、充放電制御装置３ａは、ステップＳ５９で逆潮流が無いと判断した場合（ステップＳ５９：Ｎｏ）、優先権の設定が電気自動車用充放電器１か否かを確認する（ステップＳ６７）。 Further, when the charge / discharge control device 3a determines in step S59 that there is no reverse power flow (step S59: No), the charge / discharge control device 3a confirms whether or not the priority setting is the charge / discharger 1 for electric vehicles (step S67).
　優先権の設定が電気自動車用充放電器１ではない場合（ステップＳ６７：Ｎｏ）、充放電制御装置３ａは、定置型蓄電池２４が放電可能か否かを確認する（ステップＳ７１）。定置型蓄電池２４が放電可能な場合（ステップＳ７１：Ｙｅｓ）、充放電制御装置３ａは、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を放電させる（ステップＳ７２）。一方、定置型蓄電池２４が放電可能ではない場合（ステップＳ７１：Ｎｏ）、充放電制御装置３ａは、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を放電させる（ステップＳ７３）。 When the priority setting is not the charge / discharger 1 for the electric vehicle (step S67: No), the charge / discharge control device 3a confirms whether or not the stationary storage battery 24 can be discharged (step S71). When the stationary storage battery 24 can be discharged (step S71: Yes), the charge / discharge control device 3a stops the operation of the charge / discharger 1 for the electric vehicle and discharges the stationary storage battery 24 (step S72). On the other hand, when the stationary storage battery 24 is not dischargeable (step S71: No), the charge / discharge control device 3a stops the operation of the stationary storage battery charger / discharger 2 and discharges the EV storage battery 41 (step S73). ).
　これに対して、優先権の設定が電気自動車用充放電器１の場合（ステップＳ６７：Ｙｅｓ）、充放電制御装置３ａは、ＥＶ用蓄電池４１が放電可能か否かを確認する（ステップＳ６８）。ＥＶ用蓄電池４１が放電可能な場合（ステップＳ６８：Ｙｅｓ）、充放電制御装置３ａは、定置型蓄電池用充放電器２の動作を停止させ、ＥＶ用蓄電池４１を放電させる（ステップＳ６９）。一方、ＥＶ用蓄電池４１が充電可能ではない場合（ステップＳ６８：Ｎｏ）、充放電制御装置３ａは、電気自動車用充放電器１の動作を停止させ、定置型蓄電池２４を放電させる（ステップＳ７０）。 On the other hand, when the priority is set for the electric vehicle charge / discharger 1 (step S67: Yes), the charge / discharge control device 3a confirms whether or not the EV storage battery 41 can be discharged (step S68). .. When the EV storage battery 41 can be discharged (step S68: Yes), the charge / discharge control device 3a stops the operation of the stationary storage battery charge / discharger 2 and discharges the EV storage battery 41 (step S69). On the other hand, when the EV storage battery 41 is not rechargeable (step S68: No), the charge / discharge control device 3a stops the operation of the electric vehicle charge / discharger 1 and discharges the stationary storage battery 24 (step S70). ..
　以上のように、本実施の形態にかかる蓄電システム２００ａにおいて、充放電制御装置３ａは、放電動作を行うようにスケジュールされた時間帯において、逆潮流があるか否かの確認結果と、電気自動車用充放電器１および定置型蓄電池用充放電器２の２つの充放電器の状態と、優先権の設定状態とに基づいて、いずれか一つの充放電器が電力変換動作を行うよう、各充放電器の動作を制御する。これにより、太陽光発電を行う電源が存在する環境においても、各充放電器が不要な放電および充電を行い蓄電池間で電力の移動が発生するのを防止できる。また、複数の充放電器の動作が干渉して蓄電システム２００ａ全体としての動作が不安定になるのを防止できる。 As described above, in the power storage system 200a according to the present embodiment, the charge / discharge control device 3a confirms whether or not there is reverse power flow in the time zone scheduled to perform the discharge operation, and the electric vehicle. Each one of the charge / discharger performs the power conversion operation based on the state of the two charge / dischargers 1 and the charge / discharger 2 for the stationary storage battery and the priority setting state. Controls the operation of the charger / discharger. As a result, even in an environment where there is a power source for photovoltaic power generation, it is possible to prevent each charger / discharger from performing unnecessary discharge and charging and causing power transfer between storage batteries. Further, it is possible to prevent the operation of the plurality of charge / dischargers from interfering with each other and the operation of the power storage system 200a as a whole from becoming unstable.
　なお、一般的に、充電動作を行うようにスケジュールされる時間帯は、電力の購入価格が安い夜間であり、夜間は太陽光発電装置７が発電を行わない。そのため、充電動作を行うようにスケジュールされる時間帯での動作では太陽光発電装置７が存在しないとみなすことができる。この場合の動作は、実施の形態２で説明した、充電動作を行うようにスケジュールされている時間帯における動作、すなわち、図６に示すフローチャートに従った動作となる。 In general, the time zone scheduled for charging operation is at night when the purchase price of electricity is low, and the photovoltaic power generation device 7 does not generate electricity at night. Therefore, it can be considered that the photovoltaic power generation device 7 does not exist in the operation in the time zone scheduled to perform the charging operation. The operation in this case is the operation in the time zone scheduled to perform the charging operation described in the second embodiment, that is, the operation according to the flowchart shown in FIG.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１　電気自動車用充放電器、２　定置型蓄電池用充放電器、３，３ａ　充放電制御装置、４　車両、５　家庭内負荷、６　ユーザインタフェース部、７　太陽光発電装置、８　電力センサー、１０　コネクタ、１１，２１　電力変換部、１２，２２，４２　制御部、１３，２３，３４　通信インタフェース部、２４　定置型蓄電池、３１　動作制御部、３２　スケジュール管理部、３３　優先権管理部、４１　ＥＶ用蓄電池、１００　電力系統、２００，２００ａ　蓄電システム。 1 Charge / discharger for electric vehicles, 2 Charger / discharger for stationary storage batteries, 3,3a Charge / discharge control device, 4 Vehicles, 5 Home load, 6 User interface unit, 7 Solar power generation device, 8 Power sensor, 10 Connector 11,21 Power conversion unit, 12, 22, 42 Control unit, 13, 23, 34 Communication interface unit, 24 Stationary storage battery, 31 Operation control unit, 32 Schedule management unit, 33 Priority management unit, 41 EV storage battery , 100 power system, 200, 200a power storage system.

Claims (8)

  1. 　それぞれが蓄電池の充電および放電を個別に行う複数の充放電器の動作を制御する充放電制御装置であって、
    　動作を優先させる充放電器を示す優先権情報を管理する優先権管理部と、
    　前記優先権情報および前記複数の充放電器それぞれの動作状態に基づいて、前記複数の充放電器の中のいずれか一つの充放電器が充電動作または放電動作である電力変換動作を行うよう、前記複数の充放電器の動作を制御する動作制御部と、
    　を備えることを特徴とする充放電制御装置。     Each is a charge / discharge control device that controls the operation of a plurality of charge / dischargers that individually charge and discharge the storage battery.
    The priority management department that manages priority information indicating the charger / discharger that prioritizes operation,
    Based on the priority information and the operating state of each of the plurality of charging / discharging devices, any one of the plurality of charging / discharging devices performs a power conversion operation which is a charging operation or a discharging operation. An operation control unit that controls the operation of the plurality of chargers and dischargers,
    A charge / discharge control device characterized by being provided with.
  2. 　前記動作制御部は、
    　前記複数の充放電器の中の２つ以上の充放電器が前記電力変換動作を行っている場合、前記電力変換動作を行っている充放電器のうち、優先順位が最も高い充放電器を除いた残りすべての充放電器に対して、前記電力変換動作の停止を指示する、
    　ことを特徴とする請求項１に記載の充放電制御装置。     The motion control unit
    When two or more charge / dischargers among the plurality of charge / dischargers perform the power conversion operation, the charge / discharger having the highest priority among the charge / dischargers performing the power conversion operation is selected. Instructs all the remaining chargers and dischargers to stop the power conversion operation.
    The charge / discharge control device according to claim 1.
  3. 　前記複数の充放電器は、電気自動車に搭載された蓄電池の充電および放電を行う電気自動車用充放電器と、定置型蓄電池の充電および放電を行う定置型蓄電池用充放電器とを含む、
    　ことを特徴とする請求項１または２に記載の充放電制御装置。     The plurality of charge / dischargers include a charge / discharger for an electric vehicle that charges and discharges a storage battery mounted on an electric vehicle, and a charge / discharger for a stationary storage battery that charges and discharges a stationary storage battery.
    The charge / discharge control device according to claim 1 or 2.
  4. 　前記充放電器が充電動作を行うスケジュールおよび放電動作を行うスケジュールを管理するスケジュール管理部、
    　を備え、
    　前記動作制御部は、
    　前記充放電器が充電動作を行うスケジュールの場合、前記複数の充放電器の中のいずれか一つの充放電器が充電動作を行い、残りのすべての充放電器は充電動作および放電動作のいずれも行わないよう、前記複数の充放電器の動作を制御し、
    　前記充放電器が放電動作を行うスケジュールの場合、前記複数の充放電器の中のいずれか一つの充放電器が放電動作を行い、残りのすべての充放電器は充電動作および放電動作のいずれも行わないよう、前記複数の充放電器の動作を制御する、
    　ことを特徴とする請求項１から３のいずれか一つに記載の充放電制御装置。     A schedule management unit that manages the schedule for charging and discharging the charger / discharger and the schedule for discharging.
    With
    The motion control unit
    When the charge / discharger is scheduled to perform a charging operation, any one of the plurality of charging / discharging devices performs a charging operation, and all the remaining charging / discharging devices are either charged or discharged. By controlling the operation of the plurality of chargers and dischargers so as not to perform
    When the charge / discharger is scheduled to perform a discharge operation, any one of the plurality of charge / dischargers performs a discharge operation, and all the remaining charge / dischargers are either in the charge operation or the discharge operation. Control the operation of the plurality of chargers / dischargers so as not to perform
    The charge / discharge control device according to any one of claims 1 to 3, wherein the charge / discharge control device is characterized.
  5. 　前記複数の充放電器が充電および放電を行う前記蓄電池は蓄電システムを構成し、
    　前記蓄電システムは電力系統および太陽光発電装置に接続され、
    　前記動作制御部は、前記電力系統と前記蓄電システムとの間の潮流電力と、前記優先権情報と、前記複数の充放電器それぞれの動作状態とに基づいて、前記複数の充放電器の中のいずれか一つの充放電器が前記電力変換動作を行うよう、前記複数の充放電器の動作を制御する、
    　ことを特徴とする請求項１から３のいずれか一つに記載の充放電制御装置。     The storage battery in which the plurality of chargers and dischargers charge and discharge constitutes a power storage system.
    The power storage system is connected to the power system and the photovoltaic power generation device,
    The operation control unit is in the plurality of charge / dischargers based on the power flow between the power system and the power storage system, the priority information, and the operating state of each of the plurality of charge / dischargers. Control the operation of the plurality of charge / dischargers so that any one of the charge / dischargers performs the power conversion operation.
    The charge / discharge control device according to any one of claims 1 to 3, wherein the charge / discharge control device is characterized.
  6. 　前記優先権情報をユーザより取得するユーザインタフェース部、
    　を備えることを特徴とする請求項１から５のいずれか一つに記載の充放電制御装置。     User interface unit that acquires the priority information from the user,
    The charge / discharge control device according to any one of claims 1 to 5, wherein the charge / discharge control device is provided.
  7. 　複数の蓄電池と、
    　それぞれが前記複数の蓄電池のいずれか一つに対して充電および放電を個別に行う複数の充放電器と、
    　前記複数の充放電器の動作を制御する充放電制御装置と、
    　を備え、
    　前記充放電制御装置は、
    　動作を優先させる充放電器を示す優先権情報を管理する優先権管理部と、
    　前記優先権情報および前記複数の充放電器それぞれの動作状態に基づいて、前記複数の充放電器の中のいずれか一つの充放電器が充電動作または放電動作である電力変換動作を行うよう、前記複数の充放電器の動作を制御する動作制御部と、
    　を備えることを特徴とする蓄電システム。     With multiple storage batteries
    A plurality of chargers / dischargers, each of which individually charges and discharges one of the plurality of storage batteries.
    A charge / discharge control device that controls the operation of the plurality of charge / dischargers, and
    With
    The charge / discharge control device is
    The priority management department that manages priority information indicating the charger / discharger that prioritizes operation,
    Based on the priority information and the operating state of each of the plurality of charging / discharging devices, any one of the plurality of charging / discharging devices performs a power conversion operation which is a charging operation or a discharging operation. An operation control unit that controls the operation of the plurality of chargers and dischargers,
    A power storage system characterized by being equipped with.
  8. 　それぞれが蓄電池の充電および放電を個別に行う複数の充放電器の動作を制御する充放電制御方法であって、
    　充放電制御装置が、前記複数の充放電器それぞれの動作状態を確認する第１のステップと、
    　充放電制御装置が、動作を優先させる充放電器を示す優先権情報と前記第１のステップでの確認結果とに基づいて、前記複数の充放電器の中のいずれか一つの充放電器が充電動作または放電動作である電力変換動作を行うよう、前記複数の充放電器の動作を制御する第２のステップと、
    　を含むことを特徴とする充放電制御方法。     Each is a charge / discharge control method that controls the operation of a plurality of charge / dischargers that individually charge and discharge the storage battery.
    The first step in which the charge / discharge control device confirms the operating state of each of the plurality of charge / dischargers, and
    Based on the priority information indicating the charge / discharger whose operation is prioritized by the charge / discharge control device and the confirmation result in the first step, any one of the plurality of charge / dischargers is selected. A second step of controlling the operation of the plurality of chargers / dischargers so as to perform a power conversion operation which is a charging operation or a discharging operation, and
    A charge / discharge control method comprising.
PCT/JP2019/033737 2019-08-28 2019-08-28 Charge/discharge control device, electricity storage system, and charge/discharge control method WO2021038762A1 (en)

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