Control system and control method

Abstract

To provide a control system that can assist in recharging a vehicle that runs on electric power.SOLUTION: The control system 10 includes a control unit 67. The control unit 67 controls a storage battery system 30 installed at facility 70 and a charger 51 installed at the facility 70 that charges a rechargeable battery 53 installed in a vehicle 52. The control unit 67 operates in a vehicle charging mode controlling the storage battery system 30 and the charger 51 so that the amount of electric power that the storage battery system 30 discharges during a predetermined time period is greater than or equal to the amount of electric power that the charger 51 charges the rechargeable battery 53 during the predetermined time period.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a control system and a control method.

Background Art

[0002] Patent Document 1 discloses a supply-demand control device that distributes the generated power of a photovoltaic power generation system to a power storage device and a heat source device such as a heat pump.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention provides a control system and the like that can assist in charging a vehicle that runs using electric power.

Means for Solving the Problems

[0005] A control system according to an aspect of the present invention includes a battery system installed in a facility and a charger installed in the facility that controls a charger for charging a secondary battery mounted on a vehicle, and the control unit controls the battery system and the charger so that the amount of power discharged by the battery system in a predetermined time period is equal to or greater than the amount of power for charging the secondary battery by the charger in the predetermined time period, and performs an operation in a vehicle charging mode.

[0006] A control method according to one aspect of the present invention is a control method performed by a computer, the control method being a method for controlling a battery storage system installed in a facility and a charger installed in the facility for charging a secondary battery mounted on a vehicle, the method including a control step of controlling the battery storage system and the charger so that the amount of power discharged by the battery storage system during a predetermined time period is equal to or greater than the amount of power charged by the charger for the secondary battery during the predetermined time period.

[0007] A program according to one aspect of the present invention is a program for causing a computer to execute the control method described above. [Effects of the Invention]

[0008] A control system, etc., according to one aspect of the present invention can assist in charging a vehicle that runs using electricity. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a block diagram showing the functional configuration of the control system according to the embodiment. [Figure 2] Figure 2 shows a first example of the appearance of a charger included in the control system according to the embodiment. [Figure 3] Figure 3 shows a second example of the appearance of a charger included in the control system according to the embodiment. [Figure 4] Figure 4 is a sequence diagram of the operation in vehicle charging mode. [Figure 5] Figure 5 shows an example of the settings screen. [Modes for carrying out the invention]

[0010] The embodiments will be described in detail below with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection configurations of components, steps, and the order of steps shown in the following embodiments are examples only and are not intended to limit the present invention. Furthermore, components in the following embodiments that are not described in an independent claim will be described as optional components.

[0011] Please note that each figure is a schematic diagram and not necessarily a strictly accurate representation. Furthermore, in each figure, substantially identical components are denoted by the same reference numerals, and redundant explanations may be omitted or simplified.

[0012] (Embodiment) [composition] First, the configuration of the control system according to the embodiment will be described. Figure 1 is a block diagram showing the functional configuration of the control system according to the embodiment.

[0013] The control system 10 shown in Figure 1 is applied to facility 70 and is a system for managing power. Facility 70 is, for example, a residence such as a detached house or an apartment building, but it may also be a facility other than a residence, such as an office building or a factory.

[0014] As shown in Figure 1, the control system 10 comprises a solar power generation system 20, a battery storage system 30, a distribution board 40, a load 50, a charger 51, a vehicle 52, and a control device 60. The components of the control system 10 are installed in facility 70. Here, "installed in facility 70" is in a broad sense and is intended to include both cases where the components are installed inside facility 70 and where they are installed outside facility 70. In other words, "installed in facility 70" here means installed somewhere on the premises of facility 70.

[0015] The photovoltaic power generation system 20 is a power generation system that generates electricity by converting sunlight into electrical energy. The power generated by the photovoltaic power generation system 20 is output to the power conditioner 31. Although not shown, the photovoltaic power generation system 20 is specifically realized by a PV (Photovoltaic) panel or the like.

[0016] The battery system 30 is a system that stores the power generated by the photovoltaic power generation system 20. The battery system 30 includes a power conditioner 31 and a battery unit 32.

[0017] The power conditioner 31 is a power conversion device and may also be called a PCS (Power Conditioning System) or the like. The power conditioner 31 is realized by a power conversion circuit such as a DC (Direct Current)-DC converter and a DC-AC (Alternating Current) converter.

[0018] The power conditioner 31 converts the DC power obtained from the photovoltaic power generation system 20 into DC power suitable for charging the battery unit 32. Further, the power conditioner 31 converts the DC power obtained from the photovoltaic power generation system 20 or the battery system 30 into AC power and outputs it to the distribution board 40. The power conditioner 31 is controlled by the control device 60 by receiving a control command from the control device 60.

[0019] The battery unit 32 stores the power generated by the photovoltaic power generation system 20. In other words, the battery unit 32 is charged by the power generated by the photovoltaic power generation system 20. Although not shown in FIG. 1, the battery unit 32 may be charged by the grid power source 80. The battery unit 32 is realized by a lithium-ion battery or the like.

[0020] The distribution board 40 distributes the AC power supplied from the system power source 80 or the AC power output by the power conditioner 31 to a plurality of branch circuits. Loads 50, chargers 51, etc. are connected to the plurality of branch circuits. Further, the distribution board 40 has a function of measuring the power consumption and can measure the power consumption for each branch circuit. The measured value of the power consumption is transmitted to the control device 60 (communication unit 65).

[0021] The load 50 is an electric device used by a user of the facility 70 (when the facility 70 is a house, the resident) in the facility 70 and is connected to one of the plurality of branch circuits. Specifically, it is a lighting device, an air conditioning device, etc.

[0022] The charger 51 is connected to one of the plurality of branch circuits and charges the vehicle 52 (more specifically, the secondary battery 53 provided in the vehicle 52) using the AC power obtained from the branch circuit. FIGS. 2 and 3 are diagrams showing an example of the appearance of the charger 51. Specifically, the charger 51 is realized by a circuit that outputs AC power suitable for charging the secondary battery 53 to the vehicle 52, a microcomputer for charge control, etc. The charger 51 is controlled by the control device 60 by receiving a control command from the control device 60. The charger 51 may be installed on the outer wall of the facility 70 as shown in FIG. 2, or may be of a charging stand type as shown in FIG. 3.

[0023] Note that the charger 51 is a normal charger mainly used in a private area and outputs AC power to the vehicle 52 as described above. However, the charger 51 may be a rapid charger mainly used in a public area. In this case, the charger 51 includes a power conversion circuit that converts the AC power obtained from the branch circuit into DC power and outputs the DC power to the vehicle 52.

[0024] Vehicle 52 is a vehicle used by users of facility 70. Vehicle 52 is, for example, an EV (Electric Vehicle) that runs on the power of an electric motor, but it may also be a vehicle that runs using both an engine and an electric motor, such as a PHV (Plug-in Hybrid Vehicle) or PHEV (Plug-in Hybrid EV). Vehicle 52 is equipped with a secondary battery 53 as an energy source for the vehicle 52 to run.

[0025] The secondary battery 53 is a secondary battery (storage battery) mounted on the vehicle 52 and is charged by the charger 51 while still mounted on the vehicle 52. Specifically, the secondary battery 53 is a lithium-ion battery or the like. The vehicle 52 is, for example, a four-wheeled vehicle, but it may also be a two-wheeled or three-wheeled vehicle.

[0026] The control device 60 is, for example, an EMS (Energy Management System) controller with power management functions. The control device 60 manages the power consumption of the load 50 installed in the facility 70 based on the power consumption measured by the distribution board 40. The control device 60 also controls equipment connected to the control device 60 via communication. The control device 60 is not limited to an EMS controller and may be other controllers that do not have energy management functions, or gateway devices. The control device 60 comprises an operation reception unit 61, a display unit 62, an information processing unit 63, a storage unit 64, and a communication unit 65.

[0027] The operation reception unit 61 receives operations from users of the facility 70. The operation reception unit 61 is implemented, for example, by a touch panel, but may also be implemented by hardware keys or the like.

[0028] The display unit 62 displays an image. The display unit 62 is implemented by a display panel such as a liquid crystal panel or an organic EL (Electro-Luminescence) panel.

[0029] The information processing unit 63 performs information processing related to power management. The information processing unit 63 is implemented by, for example, a microcomputer, but may also be implemented by a processor. The information processing unit 63 includes a setting unit 66 and a control unit 67 as functional components. The functions of the setting unit 66 and the control unit 67 are realized, for example, by the microcomputer or processor (hardware) constituting the information processing unit 63 executing a computer program (software) stored in the storage unit 64. The specific operations performed by the setting unit 66 and the control unit 67 will be described later.

[0030] The memory unit 64 is a storage device that stores computer programs and the like executed by the information processing unit 63. The memory unit 64 is implemented, for example, by semiconductor memory.

[0031] The communication unit 65 is a communication circuit that allows the control device 60 to communicate with the battery system 30 (power conditioner 31), the distribution board 40, and the charger 51, etc., via a local communication network. The communication unit 65 is, for example, a wireless communication circuit that performs wireless communication, but it may also be a wired communication circuit that performs wired communication. The communication standard used for communication performed by the communication unit 65 is, for example, ECHONET Lite®, but the communication standard used for communication performed by the communication unit 65 is not particularly limited.

[0032] [Vehicle charging mode operation] Vehicle 52 can run using electricity stored in the secondary battery 53 as its energy source, and when running on electricity, greenhouse gas emissions (such as carbon dioxide) from vehicle 52 are suppressed. Here, since the solar power generation system 20 does not emit greenhouse gases when generating electricity, the secondary battery 53 is charged with electricity generated by the solar power generation system 20, which further suppresses greenhouse gas emissions associated with the operation of vehicle 52.

[0033] Therefore, the control system 10 performs the following vehicle charging mode operations so that the secondary battery 53 of the vehicle 52 can be considered to have been charged with electricity generated by the solar power generation system 20. Figure 4 is a sequence diagram of the operation of the vehicle charging mode. Steps S11 to S15 in Figure 4 correspond to the pre-setting operations of the vehicle charging mode.

[0034] The setting unit 66 of the control device 60 displays a setting screen on the display unit 62 based on user operations to the operation reception unit 61 (S11). Figure 5 shows an example of the setting screen.

[0035] As shown in Figure 5, the user can set the on / off status of the vehicle charging mode, the time period during which the vehicle charging mode is in operation, and the remaining charge (storage capacity) of the battery system 30 (more specifically, the battery unit 32; the same applies hereinafter) required for the vehicle charging mode to operate, through the settings screen.

[0036] When the above settings screen is displayed, if the operation reception unit 61 receives an operation from the user indicating their intention to turn on the vehicle charging mode (S12), the setting unit 66 makes settings related to the vehicle charging mode based on the received operation (S13). In other words, the setting unit 66 turns on the setting for the operation of the vehicle charging mode based on the user's operation, and further sets a predetermined time period and the remaining charge level. The settings here are stored as setting information in the storage unit 64.

[0037] Regarding the specified time period, there are no particular limitations on how the specified time period is set, but for example, the time period from 19:00 onwards can be set in one-hour increments. Regarding the remaining battery charge, in the example in Figure 5, a battery charge dedicated to the vehicle charging mode is set, but the battery charge for daily use (i.e., the remaining charge excluding the charge for power outages and battery assist) may also be used for the vehicle charging mode. In other words, it is not essential that a battery charge dedicated to the vehicle charging mode is set (i.e., that the setting unit 66 sets the battery charge).

[0038] When the vehicle charging mode is set to ON, the control unit 67 transmits a mode transition command and a limit command to the battery system 30 (S14). More specifically, the mode transition command and the limit command are transmitted to the battery system 30 by the communication unit 65.

[0039] First, let's explain the mode transition command. The battery storage system 30 supports a first energy storage mode in which power generated by the solar power generation system 20 is stored in the battery storage unit 32, and a second energy storage mode in which power supplied from the grid power supply 80 is stored in the battery storage unit 32. When the battery storage system 30 receives the above mode transition command, it operates in the first energy storage mode (S15). During operation in the first energy storage mode, for example, surplus power from the solar power generation system 20 (power that could not be consumed by the load 50) is stored in the battery storage unit 32. In this way, according to the mode transition command, the control unit 67 can change the operating mode of the battery storage system 30 so that power generated by the solar power generation system 20 is stored in the battery storage unit 32.

[0040] The transmission of the mode transition command in step S14 may be omitted if the battery system 30 supports only the first energy storage mode (and not the second energy storage mode), or if the control unit 67 recognizes that the battery system 30 is already operating in the first energy storage mode.

[0041] Next, the limiting command will be explained. The limiting command is a command to allow discharge of the battery system 30 when the remaining charge set in step S13 is secured, and to restrict discharge when the remaining charge is not secured. When the battery system 30 receives the limiting command, it transitions to a first charging mode in which discharge is restricted (S15). In this way, according to the limiting command, the control unit 67 can control the battery system 30 so that the remaining charge of the battery system 30 necessary for operating the vehicle charging mode is secured at the start of a predetermined time period.

[0042] Note that the transmission of the limit command in step S14 may be omitted. For example, the control unit 67 may operate the vehicle charging mode only if the remaining charge reaches a level usable for the vehicle charging mode at the start of the predetermined time period. In such a case, information processing (transmission of the limit command) to secure the remaining charge is unnecessary. Also in this case, it is unnecessary to set the remaining charge in step S13.

[0043] Subsequently, when the control unit 67 determines that the start time of a predetermined time period has arrived (S16), it performs the operation of the vehicle charging mode. Specifically, the control unit 67 uses the communication unit 65 to send a discharge command to the battery system 30 (S17) and a charge command to the charger 51 (S18). No power specification is made in the discharge command, and in the charge command, the effective value is specified so that the secondary battery 53 is charged at a second effective value less than or equal to the first effective value determined by the rated output of the battery system 30 (power conditioner 31). For example, the first effective value determined by the rated output of the battery system 30 is 1.5kW or 2.0kW, and the second effective value specified in the charge command is 1.2kW.

[0044] Furthermore, during the operation of the vehicle charging mode (i.e., during a predetermined time period), it is sufficient that the effective value of discharge from the battery system 30 is equal to or greater than the effective value of charge from the charger 51, and it is not essential that the effective value is specified in the charging command. In other words, it is sufficient that at least one of the following is done: the effective value of discharge is specified in the discharge command, and the effective value of charge is specified in the charging command, so that the effective value of discharge from the battery system 30 is equal to or greater than the effective value of charge from the charger 51.

[0045] When the battery storage system 30 receives a discharge command, it starts discharging in accordance with the command (S19). Specifically, the power conditioner 31 of the battery storage system 30 discharges the battery unit 32, converts the DC power obtained by the discharge into AC power, and discharges (outputs) it to the distribution board 40.

[0046] Furthermore, when the charger 51 receives a charging command, it starts charging the secondary battery 53 of the vehicle 52 using the power distributed by the distribution board 40 in accordance with the charging command (S20). Specifically, the charger 51 charges the secondary battery 53 by outputting AC power suitable for charging the secondary battery 53 to the vehicle 52 using the AC power distributed by the distribution board 40.

[0047] Until the vehicle charging mode operation is completed, the effective discharge value of the battery system 30 remains equal to or greater than the effective charge value of the charger 51. As a result, during the operation of the vehicle charging mode (a predetermined time period), the amount of energy discharged by the battery system 30 is substantially the same as the amount of energy charged by the charger 51 to the secondary battery 53, or the amount of energy discharged by the battery system 30 is greater than the amount of energy charged by the charger 51 to the secondary battery 53. In other words, the amount of energy discharged by the battery system 30 is equal to or greater than the amount of energy charged by the charger 51 to the secondary battery 53.

[0048] The amount of energy discharged by the battery system 30 here more specifically refers to the amount of AC power discharged (output) by the power conditioner 31 to the distribution board, but it may also refer to the amount of DC power discharged (output) by the battery unit 32 to the power conditioner 31. In the latter case, it is desirable that the amount of energy discharged by the battery system 30 be designed to be greater than or equal to the amount of energy charged by the charger 51 to charge the secondary battery 53, taking into account the losses that occur in the power conversion (conversion from DC power to AC power) in the power conditioner 31. Furthermore, the amount of energy charged by the charger 51 to charge the secondary battery 53 refers to the amount of AC power output by the charger 51 to the vehicle 52, but if the charger 51 is a fast charger, it may also refer to the amount of DC power output by the charger 51 to the vehicle 52.

[0049] If power is not supplied from the grid power supply 80 to the distribution board 40 while the vehicle charging mode is in operation, then it can be said that all the power used by the charger 51 is power discharged from the battery storage system 30.

[0050] The electricity discharged from the battery system 30 is electricity generated by the solar power generation system 20, that is, electricity generated in a manner that minimizes greenhouse gas emissions. Therefore, the control system 10 can assist in charging the vehicle 52 (secondary battery 53) with electricity generated in a manner that minimizes greenhouse gas emissions by operating in vehicle charging mode. In other words, the control system 10 can assist the user in achieving zero-carbon driving.

[0051] Furthermore, the load 50 is also operating while the vehicle charging mode is running. If the power consumption of the load 50 is so high during the operation of the vehicle charging mode that the power discharged from the battery system 30 alone is insufficient to cover the power consumption of the load 50 and the charger 51, power will also be supplied from the grid power supply 80 to the distribution board 40.

[0052] In the control system 10, the output of the battery system 30 is not directly connected to the input of the charger 51. In the control system 10, the battery system 30 and the charger 51 are electrically connected via the distribution board 40. Therefore, when power is supplied to the distribution board 40 from both the battery system 30 and the grid power supply 80, not all of the power used by the charger 51 is necessarily power discharged from the battery system 30.

[0053] However, during operation in vehicle charging mode, the amount of electricity discharged by the battery system 30 is greater than or equal to the amount of electricity charged by the charger 51 to charge the secondary battery 53. Therefore, at least the electricity used by the charger 51 can be considered to be the electricity discharged from the battery system 30. In other words, even in this case, the control system 10 can assist in charging the vehicle 52 (secondary battery 53) with electricity generated in a manner that minimizes greenhouse gas emissions.

[0054] The vehicle charging mode operation ends at one of the following times: when the remaining charge for the vehicle charging mode is depleted, at the end of the predetermined time period, or when the secondary battery 53 is fully charged. Generally, the storage capacity of the secondary battery 53 of the vehicle 52 is greater than the storage capacity of the battery unit 32 of the battery system 30. Therefore, the vehicle charging mode operation ends at the earlier of the two times: when the remaining charge for the vehicle charging mode is depleted, or at the end of the predetermined time period, and depending on the operation of the vehicle charging mode, the secondary battery 53 is often not fully charged.

[0055] For users who wish to fully charge the secondary battery 53, a setting (hereinafter also referred to as the extension setting) may be provided to continue charging the secondary battery 53 using power supplied from the grid power supply 80 after the vehicle charging mode has ended. For example, the setting screen may be provided with an operable area for the user to set whether or not to enable the extension setting. This allows the control system 10 to meet the needs of users who wish to fully charge the battery.

[0056] [Effects, etc.] As described above, the control system 10 includes a control unit 67 that controls the battery storage system 30 installed in the facility 70 and the charger 51 installed in the facility 70, which charges the secondary battery 53 mounted on the vehicle 52. The control unit 67 operates a vehicle charging mode that controls the battery storage system 30 and the charger 51 so that the amount of power discharged by the battery storage system 30 during a predetermined time period is equal to or greater than the amount of power charged by the charger 51 to the secondary battery 53 during a predetermined time period.

[0057] Such a control system 10 can assist users of the facility 70 in charging vehicles 52 that run using electricity.

[0058] Furthermore, for example, the control system 10 further includes a setting unit 66 that sets a predetermined time period based on user operation. When a predetermined time period is set, the control unit 67 controls the battery system 30 so that the remaining charge of the battery system 30 for operating the vehicle charging mode is secured at the start of the predetermined time period.

[0059] Such a control system 10 can ensure that the battery system 30 has sufficient charge remaining to operate in vehicle charging mode.

[0060] Furthermore, for example, the setting unit 66 sets the remaining charge based on user operation.

[0061] Such a control system 10 can set the remaining charge of the battery system 30 for operating in vehicle charging mode to a charge level desired by the user.

[0062] Furthermore, for example, a solar power generation system 20 is installed in facility 70. The setting unit 66 further sets the operation of the vehicle charging mode on and off based on user operation. When the operation of the vehicle charging mode is set to on, the control unit 67 changes the operating mode of the battery storage system 30 so that the power generated by the solar power generation system 20 is stored in the battery storage system 30. In vehicle charging mode, the battery storage system 30 discharges the power generated by the solar power generation system 20 that has been previously stored in the battery storage system 30.

[0063] Such a control system 10 can assist in charging the vehicle 52 with electricity generated in a manner that produces fewer greenhouse gas emissions.

[0064] Furthermore, for example, in the operation of the vehicle charging mode, the control unit 67 commands the battery storage system 30 to discharge and commands the charger 51 to charge the secondary battery 53 to a second effective value less than or equal to the first effective value determined by the rated output of the battery storage system 30.

[0065] Such a control system 10 can ensure that the amount of electricity discharged by the battery storage system 30 during a predetermined time period is equal to or greater than the amount of electricity charged by the charger 51 to the secondary battery 53 during a predetermined time period, by instructing the charger 51 to use an effective value when charging the secondary battery 53.

[0066] Furthermore, for example, in the operation of the vehicle charging mode, the battery storage system 30 outputs power to the distribution board 40 installed in the facility 70 by discharging, and the charger 51 charges the secondary battery 53 using the power distributed by the distribution board 40.

[0067] Such a control system 10 can assist in charging the vehicle 52 in a configuration where the power discharged from the battery system 30 is supplied to the charger 51 via the distribution board 40.

[0068] Furthermore, the control method executed by a computer such as the control system 10 is a method for controlling the battery storage system 30 installed in the facility 70 and the charger 51 installed in the facility 70, which charges the secondary battery 53 mounted on the vehicle 52. The control method includes a control step of controlling the battery storage system 30 and the charger 51 so that the amount of power discharged by the battery storage system 30 during a predetermined time period is equal to or greater than the amount of power charged by the charger 51 to the secondary battery 53 during a predetermined time period.

[0069] This control method can help users of the facility 70 charge vehicles 52 that run using electricity.

[0070] (Other embodiments) Although embodiments have been described above, the present invention is not limited to the embodiments described above.

[0071] For example, in the above embodiment, the control system was implemented by multiple devices. In this case, the components of the control system may be distributed among the multiple devices in any way. The control system may also be implemented as a client-server system, in which a server device (not shown) may perform some or all of the processing performed by the control device (client device).

[0072] Furthermore, the control system may be implemented by a single device, for example, as a single device corresponding to the control device of the above embodiment.

[0073] Furthermore, in the above embodiment, the processing performed by a specific processing unit may be performed by another processing unit. Also, the order of multiple processing units may be changed, or multiple processing units may be executed in parallel.

[0074] Furthermore, in the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may also be realized by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.

[0075] Furthermore, each component may be implemented by hardware. For example, each component may be a circuit (or integrated circuit). These circuits may form a single circuit as a whole, or they may be separate circuits. Also, each of these circuits may be a general-purpose circuit or a dedicated circuit.

[0076] Furthermore, general or specific embodiments of the present invention may be implemented as a system, apparatus, method, integrated circuit, computer program, or recording medium such as a computer-readable CD-ROM. Alternatively, they may be implemented as any combination of a system, apparatus, method, integrated circuit, computer program, and recording medium.

[0077] For example, the present invention may be implemented as a control device according to the above embodiment. Furthermore, the present invention may be implemented as a control method for a computer, such as a control system, or as a program for causing a computer to execute such a control method. The present invention may also be implemented as a computer-readable non-temporary recording medium on which such a program is stored.

[0078] Furthermore, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art could conceive, or forms realized by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present invention. [Explanation of Symbols]

[0079] 10 Control Systems 20 Solar power generation systems 30 Battery Storage Systems 31 Power Conditioner 32 Battery Units 40-minute distribution board 50 load 51 Charger 52 vehicles 53 Secondary battery 60 Control device 61 Operation Reception Section 62 Display section 63 Information Processing Department 64 Storage section 65 Communications Department 66 Settings Section 67 Control Unit 70 facilities 80 Grid power supply

Claims

1. A battery storage system installed at the facility, and a charger installed at the facility, which controls a charger for charging secondary batteries mounted on a vehicle, It includes a setting unit, The control unit operates a vehicle charging mode that controls the battery system and the charger so that the amount of power discharged by the battery system during a predetermined time period is equal to or greater than the amount of power charged by the charger during the predetermined time period. The setting unit sets the predetermined time period based on user operation, and further sets the remaining charge of the battery system for operating the vehicle charging mode based on user operation. When the predetermined time period is set, the control unit controls the battery system so that the set remaining charge is secured at the start of the predetermined time period. Control system.

2. The aforementioned facility is equipped with a solar power generation system. The setting unit further sets the on / off operation of the vehicle charging mode based on the user's operation. The control unit, upon setting the vehicle charging mode to ON, changes the operating mode of the battery system so that the power generated by the solar power generation system is stored in the battery system. In the vehicle charging mode, the battery system discharges the electricity generated by the solar power generation system that has been previously stored in the battery system. The control system according to claim 1.

3. The control unit, in operation of the vehicle charging mode, commands the battery system to discharge and commands the charger to charge the secondary battery to a second effective value less than or equal to the first effective value determined by the rated output of the battery system. The control system according to claim 1 or 2.

4. In the operation of the aforementioned vehicle charging mode, The aforementioned battery system outputs power to a distribution board installed in the facility by discharging, The charger charges the secondary battery using the power distributed by the distribution board. The control system according to any one of claims 1 to 3.

5. A control method performed by a computer, The control method is a method for controlling a battery storage system installed in a facility and a charger installed in the facility that charges a secondary battery mounted on a vehicle. A control step of controlling the battery system and the charger so that the amount of power discharged by the battery system during a predetermined time period is equal to or greater than the amount of power charged by the charger during the predetermined time period, A step of setting a predetermined time period based on user operation, and further setting the remaining charge of the battery system for executing the control step based on user operation, The step of controlling the battery system so that the set remaining charge is secured at the start of the predetermined time period once the predetermined time period is set. Control method.

6. A program for causing a computer to execute the control method described in claim 5.

Images