JP6832254B2 - Charge control server, charge control system and program - Google Patents

Description

Embodiments of the present invention relate to charge control servers, charge control systems and programs.

Conventionally, a technique for managing charging of a storage battery using a tablet terminal or the like is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-157359

This conventional technique enables charging in various places by giving a privilege to a person who supplies electric power to charge the storage battery and encouraging the electric power supply.
By the way, the electric power for charging the storage battery may be supplied by the commercial electric power supplied from the electric power supply company to the equipment provided with the charger (general house, commercial facility, etc.). Here, the unit price of the electric power charge may be determined according to the amount of electric power supplied in the electric power supply contract between the manager (for example, the owner) of the equipment and the electric power supply company. For example, the larger the amount of electricity supplied per unit time, the higher the unit price of electricity charges is set.
The commercial power supplied to the equipment is consumed not only by charging the storage battery, but also by other electric equipment provided in the equipment. Therefore, depending on the equipment that supplies charging power to the storage battery, that is, the power consumption status of the power supply source, charging may exceed the current upper limit of the power supply contract, and the unit price of the power charge may increase. , Higher electricity bills may be paid. As an example, this storage battery may be an in-vehicle large-capacity storage battery for an electric vehicle. In the case of this example, since a large amount of electric power is required to charge the in-vehicle storage battery of the electric vehicle, it is easy to exceed the upper limit value in the electric power supply contract.
However, with the conventional technology as described above, since it is not possible to grasp the state of power consumption when charging the storage battery, the unit price of the power charge may increase depending on the state of power consumption. That is, in the above-mentioned conventional technology, there is a problem that it is not possible to perform charge control in consideration of fluctuations in the unit price of electricity charges.

An object of the present invention is to provide a charge control server, a charge control system, and a program capable of performing charge control in consideration of fluctuations in the unit price of electricity charges.

One embodiment of the present invention includes a command acquisition unit that acquires charging command information including at least information indicating a scheduled charging end time of the power storage device, and charge amount information that acquires charge amount information indicating the charge amount of the power storage device. An acquisition unit, a consumption history storage unit that stores the consumption history of electric power for each predetermined time consumed by an electric device other than the power storage device provided in a facility including a charger for charging the power storage device, and a consumption history storage unit of the facility. A threshold storage unit that stores the upper limit threshold of the power consumption for each predetermined time based on the power contract, the required charging power required for charging the power storage device by the charger for each predetermined time, and the scheduled end of charging. As a charging plan indicating the time, a charging plan storage unit that stores the charging command information, the charging amount information, the consumption history, and the charging plan information generated based on the upper limit threshold value, and the charging plan storage unit. A power consumption status information acquisition unit that acquires power consumption status information indicating the power consumption status for each predetermined time consumed in the facility at a time interval shorter than the predetermined time of the charging plan, the charging plan information, and the charging plan information. and the power consumption status information, the based on the determined threshold value defined in the value smaller than the upper limit threshold value, than the predetermined time of the charging plan the charging control information for controlling the charging of said power storage device It is generated at short time intervals, and is supplied to the power storage device by the charger and the power consumption in the equipment indicated by the power consumption status information in a certain time zone at the predetermined time indicated by the charging plan information. When the sum of the charging power and the charging power exceeds the determination threshold value, the charging control information generation unit that generates the charging control information for stopping the charging of the power storage device in the time zone and the charging control It is a charge control server including a charge control information output unit that outputs the charge control information generated by the information generation unit to the charge control unit that controls charging of the power storage device.

In one embodiment of the present invention, in the above-mentioned charge control server, the amount of power to be charged to the power storage device, the scheduled charging end time, the power consumption status information, the upper limit threshold value, and the consumption history. Based on the above, the charging plan updating unit is further provided to update the charging plan information for each predetermined time after charging based on the charging plan information is started.

In one embodiment of the present invention, in the above-mentioned charge control server, the charge plan update unit performs the charge plan when the power consumption status for each predetermined time indicated by the power consumption status information exceeds the determination threshold value. Update the information.

In one embodiment of the present invention, in the above-mentioned charge control server, the charge plan update unit updates the charge plan information by changing the scheduled charge end time indicated by the charge plan information before the update.

In one embodiment of the present invention, in the above-mentioned charge control server, the charge plan update unit obtains the charge plan information by changing the required charge power amount for each predetermined time indicated by the charge plan information before the update. Update.

In one embodiment of the present invention, in the above-mentioned charge control server, the charge command information, the charge amount information, the consumption history, and the upper limit threshold are set before charging based on the charge plan information is started. A charge plan generation unit is further provided, which generates the charge plan information based on the determination threshold value set to a value smaller than the value, and stores the generated charge plan information in the charge plan storage unit.

In one embodiment of the present invention, in the above-mentioned charge control server, the power consumption is based on the power consumption status at predetermined time indicated by the power consumption status information and the power consumption date and time indicating the timing when the power is consumed. A consumption history generation unit that generates a history and stores the generated consumption history in the consumption history storage unit is further provided.

In one embodiment of the present invention, in the above-mentioned charge control server, the power storage device includes a storage battery for driving an electric vehicle, and the required electric energy is calculated based on a predicted value of a mileage of the electric vehicle. The charging command information includes the required charging electric energy information indicating the required charging electric energy of the power storage device, and the charging plan information is the required charging electric energy indicated by the required charging electric energy included in the charging command information. It is generated based on the required charging power amount.

One embodiment of the present invention acquires a terminal device including a command output unit that outputs charging command information including at least information indicating a scheduled charging end time of the power storage device, and the charging command information output by the terminal device. It is consumed by an electric device other than the power storage device provided in a facility including a command acquisition unit, a charge amount information acquisition unit that acquires charge amount information indicating the charge amount of the power storage device, and a charger for charging the power storage device. A consumption history storage unit that stores the power consumption history for each predetermined time, a threshold storage unit that stores the upper limit threshold of the power consumption amount for each predetermined time based on the power contract of the equipment, and the above. As a charging plan showing the required charging power amount required for charging the power storage device by the charger at predetermined time intervals and the scheduled charging end time, the charging command information, the charging amount information, the consumption history, and the upper limit The charging plan storage unit that stores the charging plan information generated based on the threshold value and the power consumption status for each predetermined time consumed in the equipment are set at time intervals shorter than the predetermined time of the charging plan. Based on the power consumption status information acquisition unit that acquires the indicated power consumption status information, the charging plan information , the power consumption status information, and a determination threshold value set to a value smaller than the upper limit threshold value. , The charge control information for controlling the charging of the power storage device is generated at a time interval shorter than the predetermined time of the charge plan, and in a certain time zone of the predetermined time indicated by the charge plan information, the said When the power consumption in the equipment indicated by the power consumption status information exceeds the determination threshold value, the charge control information generation unit that generates the charge control information for stopping the charging of the power storage device in the time zone A charge control server including a charge control information output unit that outputs the charge control information generated by the charge control information generation unit to a charge control unit that controls charging of the power storage device at predetermined time intervals. A charge control system including a power consumption status measuring device that measures the power consumption status for each predetermined time consumed in the facility and outputs power consumption status information indicating the measured consumption status to the charge control server. Is.

In one embodiment of the present invention, a computer included in a charge control server has a command acquisition step of acquiring charging command information including at least information indicating a scheduled charging end time of the power storage device, and charging indicating the charge amount of the power storage device. The consumption history storage unit stores the charge amount information acquisition step for acquiring the amount information and the power consumption history for each predetermined time consumed by the electric device other than the power storage device provided in the equipment provided with the charger for charging the power storage device. The consumption history storage step to be stored in the threshold storage unit, the upper limit threshold storage step to store the upper limit threshold of the power consumption amount for each predetermined time based on the power contract of the equipment in the threshold storage unit, and the charger. The charging command information acquired in the command acquisition step and the charge amount information acquisition step are acquired as a charging plan indicating the required charging power amount required for charging the power storage device at predetermined time intervals and the scheduled charging end time. Charge plan information generated based on the charge amount information, the consumption history stored in the consumption history storage step, and the upper limit threshold stored in the upper limit threshold storage step is stored. The charge plan information acquisition step of acquiring the charge plan information from the charge plan storage unit and the power consumption indicating the power consumption status for each predetermined time consumed in the facility at shorter time intervals than the predetermined time of the charge plan. The power consumption status information acquisition step for acquiring status information, the charging plan information acquired in the charging plan information acquisition step, the power consumption status information acquired in the power consumption status information acquisition step, and the upper limit threshold. based on the determination threshold value defined in the value smaller than the upper threshold value stored in the value storing step, than the predetermined time of the charging plan the charging control information for controlling the charging of said power storage device A step of generating at short time intervals, in which the power consumption in the equipment indicated by the power consumption status information exceeds the determination threshold value in a certain time zone at the predetermined time indicated by the charging plan information. In the charge control information generation step for generating the charge control information for stopping the charging of the power storage device in the time zone, and the charge control information generated in the charge control information generation step, the power storage device is predetermined. This is a program for executing a charge control information output step that is output to a charge control unit that controls charging for each hour.

According to the present invention, it is possible to provide a charge control system, a charge control method, and a server capable of performing charge control in consideration of fluctuations in the unit price of electricity charges.

It is a figure which shows the functional structure of the charge control system of this embodiment. It is a figure which shows an example of the operation of generating the consumption history and the upper limit threshold value by the charge control system of this embodiment. It is a figure which shows an example of the power consumption situation information of this embodiment. It is a figure which shows an example of the consumption history of this embodiment. It is a figure which shows an example of the upper limit threshold value of this embodiment. It is a figure which shows an example of the upper limit threshold value generated by the consumption history generation part of this embodiment. It is a figure which shows an example of the operation of generating the charge plan information of this embodiment. It is a figure which shows an example of the screen display of the terminal apparatus of this embodiment. It is a figure which shows an example of the charging operation screen of the terminal device of this embodiment. It is a figure which shows an example of the charge command of this embodiment. It is a figure which shows an example of the charge amount information of this embodiment. It is a figure which shows an example of the required charge electric energy of this embodiment. It is a figure which shows an example of the estimated power consumption of this embodiment. It is a figure which shows an example of the charge plan information of this embodiment. It is a figure which shows an example of the operation of execution of charging and update of charge plan information of this embodiment. It is a figure which shows an example of the transition of the power consumption amount after the start of charging of this embodiment. It is a figure which shows an example of the update of the charge plan information of this embodiment. It is a figure which shows an example of the charge command in the case of the end time designation mode of this embodiment. It is a figure which shows an example of the charge plan information in the case of the end time designation mode of this embodiment. It is a figure which shows an example of the charge command in the case of the market mode of this embodiment. It is a figure which shows an example of the user classification of this embodiment.

[Embodiment]
Hereinafter, the charge control system 1 of the present embodiment will be described with reference to the drawings.
FIG. 1 is a diagram showing a functional configuration of the charge control system 1 of the present embodiment. The charge control system 1 controls charging / discharging between the equipment 30 and the power storage device 40 by communicating with the server 10, the terminal device 20, the equipment 30, and the power storage device 40.

The equipment 30 supplies electric power to the power storage device 40. The power storage device 40 is charged by the electric power supplied from the equipment 30. The power storage device 40 is, for example, an in-vehicle large-capacity storage battery for an electric vehicle.
In this example, the equipment 30 is the home of the owner of the power storage device 40. Commercial power is supplied to the equipment 30. The equipment 30 includes a smart meter 310, an electric device 320 other than the charger, and a charger 330.

The smart meter 310 distributes the supplied commercial power to the charger 330 and the electric device 320 other than the charger. The electric device 320 other than the charger is an electric product installed in the equipment 30 such as a refrigerator, an electric water heater, an air conditioner, and a television. The smart meter 310 also describes the power supplied to the electric device 320 other than the charger (hereinafter, also referred to as power consumption PCS) and the power supplied to the charger 330 (hereinafter, also referred to as supply power PCH). ) And are measured, and the measured power information is output to the server 10. The information output by the smart meter 310 to the server 10 is also referred to as a power consumption status information PC.
When the power storage device 40 is connected, the charger 330 supplies the power supply PCH to the power storage device 40.

The power storage device 40 includes a charge amount information output unit 410, a charge control unit 420, a switch 440, and a storage battery 450.
The storage battery 450 stores the supplied electric power, and supplies the stored electric power to each part of the power storage device 40.
The switch 440 opens and closes under the control of the charge control unit 420. The switch 440 has a conduction state (on state) in which the supply power PCH is supplied to the storage battery 450 and a cutoff state (off state) in which the supply power PCH is not supplied to the storage battery 450.
The charge control unit 420 controls the charge of the storage battery 450. When the charger 330 is connected to the power storage device 40, the charge control unit 420 of the present embodiment controls whether or not to charge the storage battery 450 by opening and closing the switch 440. That is, the charge control unit 420 controls the charging of the storage battery 450 by the electric power supplied from the external charger 330.

The charge control unit 420 determines whether or not the power storage device 40 and the charger 330 are connected. Here, the charge control unit 420 can determine whether or not the power storage device 40 and the charger 330 are connected by various methods. For example, the charge control unit 420 may determine whether or not the charging cable of the charger 330 is connected to the power storage device 40, and whether or not charging power is supplied to the switch 440 of the power storage device 40. You may judge.
Further, the charge control unit 420 determines whether or not the charger 330 is connected to the storage battery 450 by monitoring the change in the charging current when the switch 440 is turned on based on the charge command CC. You may.

The charge amount information output unit 410 outputs the charge amount information CH to the server 10. The charge amount information CH indicates the state of charge of the storage battery 450 of the power storage device 40. For example, the charge amount information CH is information indicating the remaining charge, the remaining power amount, or the charge rate of the storage battery 450. Further, the charge amount information CH may include information indicating a deteriorated state of the storage battery 450.

The terminal device 20 is, for example, a smartphone, a tablet, a personal computer, or the like. The terminal device 20 includes an operation detection unit 210 and a command output unit 220.
The operation detection unit 210 includes, for example, a touch panel 22, and detects an operation by a user of the terminal device 20.
The command output unit 220 outputs a charge command CC of the power storage device 40 based on the operation detected by the operation detection unit 210 to the server 10.

The server 10 includes a command acquisition unit 110, a charge amount information acquisition unit 120, a power consumption status information acquisition unit 130, a consumption history generation unit 140, a storage unit 150, a charge plan generation unit 160, and a charge control information generation. A unit 170 and a charge control information output unit 180 are provided.

The storage unit 150 includes a consumption history storage unit 151, a threshold value storage unit 152, and a charge plan storage unit 153.

The command acquisition unit 110 acquires the charge command CC output by the command output unit 220 of the terminal device 20.
The charge amount information acquisition unit 120 acquires the charge amount information CH output by the charge amount information output unit 410 of the power storage device 40.
The power consumption status information acquisition unit 130 acquires the power consumption status information PC output by the smart meter 310 of the equipment 30. The power consumption status information PC is information indicating the status of the supplied power PCH in the equipment 30 and the status of the power consumption PCS.
The consumption history generation unit 140 generates the consumption history HS based on the power consumption status for each predetermined time indicated by the power consumption status information PC and the power consumption date and time indicating the timing at which the power is consumed. The consumption history generation unit 140 stores the generated consumption history HS in the consumption history storage unit 151.
The charge plan generation unit 160 generates charge plan information PL based on the charge command CC, the charge amount information CH, the consumption history HS, and the upper limit threshold value TH. The charging plan information PL is a charging plan for the power storage device 40. The charging plan information PL is indicated by the required charging electric energy RP required for charging the power storage device 40 by the charger 330 at predetermined time intervals and the scheduled charging end time Te. The charge plan generation unit 160 stores the generated charge plan information PL in the charge plan storage unit 153.
The charge control information generation unit 170 generates charge control information CNT based on the power consumption status information PC, the charge amount information CH, and the charge command CC output by the command output unit 220. The charge control information CNT is information output to the power storage device 40 as information for controlling the charge of the storage battery 450.
The charge control information output unit 180 outputs the charge control information CNT generated by the charge control information generation unit 170 to the charge amount information output unit 410 of the power storage device 40.

[Operation of charge control system 1]
Next, an example of the operation of the charge control system 1 will be described. The operations of the charge control system 1 include (1) generation of consumption history HS and upper limit threshold value TH, (2) generation of charge plan information PL, (3) execution of charge and update of charge plan information PL. First, (1) the generation of the consumption history HS and the upper limit threshold value TH will be described with reference to FIGS. 2, 5 and 6.

[(1) Generation of consumption history HS and upper limit threshold TH]
FIG. 2 is a diagram showing an example of the operation of generating the consumption history HS and the upper limit threshold value TH by the charge control system 1 of the present embodiment.
(Step S310) The smart meter 310 measures the consumption status of the commercial power supplied to the equipment 30. The smart meter 310 outputs the measured commercial power consumption status to the server 10 as a power consumption status information PC.
Specifically, the smart meter 310 measures the power consumption PCS and the supplied power PCH. The smart meter 310 outputs a power consumption status information PC indicating the measured power consumption PCS and supply power PCH to the server 10. Here, when the power storage device 40 is not connected to the charger 330, the power supply PCH is not generated. In this case, the power indicated by the power consumption status information PC is the power consumption PCS. The power consumption PCS is the power consumed by the electric device 320 other than the charger 330 among the electric devices provided in the facility 30. That is, the smart meter 310 outputs the power consumption status information PC when the power storage device 40 is not connected to the charger 330 to the server 10. An example of the power consumption status information PC output by the smart meter 310 will be described with reference to FIG.

FIG. 3 is a diagram showing an example of the power consumption status information PC of the present embodiment. The smart meter 310 measures the power consumption PCS of the equipment 30 and calculates the power consumption amount for each predetermined time by integrating the measured power consumption PCS in units of a predetermined time (for example, 30 minutes). The smart meter 310 outputs the calculated power consumption amount to the server 10 as a power consumption status information PC.
In the specific example shown in FIG. 3, the smart meter 310 calculates the power consumption PC01 by integrating the power consumption PCS from 8:00 to 8:30 on a certain day, and consumes the calculated power consumption PC01. It is output to the server 10 as a status information PC. In the same manner thereafter, the smart meter 310 sequentially outputs the power consumption PC 02 to the power consumption PC 14 to the server 10 as the power consumption status information PC.
The smart meter 310 may output the power consumption status information PC to the server 10 not only at 30-minute intervals but also at shorter time intervals. For example, the smart meter 310 may calculate the power consumption PC01 by setting the integration of the power consumption PCS at 5-minute intervals or 10-minute intervals.

Returning to FIG. 2, the description of the operation of the charge control system 1 will be continued.
(Step S110) The power consumption status information acquisition unit 130 of the server 10 acquires the power consumption status information PC output in step S310. The power consumption status information acquisition unit 130 supplies the acquired power consumption status information PC to the consumption history generation unit 140.
(Step S120) The consumption history generation unit 140 generates the consumption history HS based on the power consumption status information PC supplied from the power consumption status information acquisition unit 130. The consumption history generation unit 140 stores the generated consumption history HS in the consumption history storage unit 151. Here, an example of the consumption history HS will be described with reference to FIG.

[About consumption history HS]
FIG. 4 is a diagram showing an example of the consumption history HS of the present embodiment. The consumption history generation unit 140 generates the consumption history HS based on the power consumption PCS measured by the smart meter 310. In this consumption history HS, the date, day of the week, and time zone in which the power consumption PCS is measured are stored in association with the measured electric energy of the power consumption PCS. Therefore, the server 10 can search the power consumption status of the same day one week ago and the power consumption status of the same day one year ago by using the consumption history HS as the search key for the date and the day of the week. Can be done.
Further, the server 10 may derive the tendency of power consumption in the equipment 30 based on the search result of the consumption history HS. For example, the server 10 derives the transition of the power consumption of the equipment 30 in the past month and the tendency of the change of the power consumption of the equipment 30 for each season.

(Step S130) Returning to FIG. 2, the consumption history generation unit 140 generates the upper limit threshold value TH based on the consumption history HS. This upper limit threshold value TH will be described with reference to FIGS. 5 and 6.

[Upper threshold TH]
FIG. 5 is a diagram showing an example of the upper limit threshold value TH of this embodiment.
The electric power supply company concludes a supply contract for the commercial electric power supplied to the equipment 30. In the following description, this power supply contract is also referred to as a power supply contract. Based on this power supply contract, the power supply company charges a fee according to the amount of power supplied to the equipment 30. Some power supply contracts stipulate that if the amount of power supplied to the equipment 30 per unit time exceeds the predetermined amount of power, an additional charge will be incurred, for example, the unit price of the power charge will increase. ..
The upper threshold TH is determined based on the amount of power generated by this additional charge. Here, the upper limit threshold value TH may be set individually for each season, day of the week, and time zone, or may be set to be constant regardless of these seasons, days of the week, time zone, and the like.

(1) When the upper limit threshold TH is set individually for each season, day of the week, and time zone Depending on the contents of the power supply contract, the unit price of the electricity charge may be set individually for each season, day of the week, and time zone. .. For example, in summer, the unit price of electricity may be higher than in other seasons, and on holidays and at night, the unit price of electricity may be lower than in other days and hours. In this case, the consumption history generation unit 140 may calculate the upper limit threshold value TH based on the unit price of the electricity charge for each category such as season, day of the week, and time zone. For example, the consumption history generation unit 140 calculates the upper limit threshold value TH relatively low when the unit price of the electricity charge is high.

(2) When the upper limit threshold TH is set to be constant regardless of the season, day of the week, and time zone Depending on the content of the power supply contract, the unit price of the power charge is set according to the charge classification according to the size of power consumption. May be done. In this case, the consumption history generation unit 140 calculates the upper limit threshold value TH so that the magnitude of the power consumption in the equipment 30 does not exceed the current charge category.

Further, the upper limit threshold value TH is determined based on the contract form of the power supply contract. As an example of the contract form of this power supply contract, there are (1) actual amount contract (smart meter contract) and (2) main switch contract (breaker contract).

(1) Actual amount contract (smart meter contract)
In this power supply contract, the peak power is calculated based on the power measured by the smart meter 310. Specifically, the monthly maximum value is obtained for a value obtained by doubling the integrated value of the power measured by the smart meter 310 for 30 minutes, and the monthly maximum value is set as the peak power. Of the peak power of each month, the largest value in the past year is defined as "contract power". The basic charge is calculated by multiplying this contracted power by the unit price of the electricity charge. In this power supply contract, when the peak power of the current month exceeds the current contract power, the contract power is renewed by the peak power of the current month. Therefore, if the peak power of the current month exceeds the current contract power, the contract power for the next year will be higher than the current contract power. In other words, if the peak power of the current month exceeds the current contract power, the power charge for the next year will be relatively high. In the present embodiment, the above-mentioned form of the power supply contract is also referred to as an actual amount system.
In the case of an actual amount contract, the consumption history generation unit 140 calculates the upper limit threshold value TH based on the maximum power consumption value (contract power) based on the power supply contract.

(2) Main switch contract (breaker contract)
In this power supply contract, the power charge is calculated based on the basic charge according to the rated current (contract current) of the main switch (breaker) installed on the power receiving board of the equipment 30. When the value of the current (peak current) due to the power consumption in the equipment 30 exceeds the contract current, it is necessary to install a main switch having a larger rated current. In this power supply contract, if a main switch with a larger rated current is installed, the electricity charge will be relatively high.
In the case of a main switch contract, the consumption history generation unit 140 calculates the upper limit threshold value TH based on the rated current value (contract current) of the main switch based on the power supply contract.

The consumption history generation unit 140 may calculate the upper limit threshold value TH by acquiring the contract plan information of the power supply contract (from the outside or from the storage unit 150).

[Calculation of upper threshold TH]
FIG. 6 is a diagram showing an example of the upper limit threshold value TH generated by the consumption history generation unit 140 of the present embodiment. In the following, a case where the power supply contract is an actual amount contract and the upper limit threshold value TH is individually determined for each time zone will be described as an example.
In the case of this example, the consumption history generation unit 140 calculates the upper limit threshold value TH for each unit time (30 minutes in this example) based on the amount of electric power for which an additional charge is generated. In this case, if the amount of electric power consumed in the equipment 30 per 30 minutes exceeds the upper limit threshold value TH, an additional charge will be incurred. That is, in this case, by preventing the amount of electric power consumed per 30 minutes in the equipment 30 from exceeding the upper limit threshold value TH, it is possible to avoid incurring an additional charge.
The consumption history generation unit 140 stores the calculated upper limit threshold value TH in the threshold value storage unit 152.

In this example, the consumption history generation unit 140 calculates the upper limit threshold value TH, but the present invention is not limited to this. For example, the upper limit threshold value TH may be predetermined or may be manually set by the operation of the user of the terminal device 20.

[(2) Generation of charging plan information PL]
Next, the generation of the charging plan information PL will be described with reference to FIG. 7.
FIG. 7 is a diagram showing an example of the operation of generating the charge plan information PL of the present embodiment.

The user of the terminal device 20 connects the power storage device 40 to the charger 330 of the equipment 30 and performs an operation of causing the terminal device 20 to output a charging command CC. When the terminal device 20 detects this operation, it generates a charging command CC. An example of the operation for the terminal device 20 will be described with reference to FIGS. 8 and 9.

FIG. 8 is a diagram showing an example of a screen display of the terminal device 20 of the present embodiment. In this example, the terminal device 20 includes a display 21 and a touch panel 22. The image PIC1 to the image PIC3 are displayed on the display 21. The images PIC1 to PIC3 are diagrams showing devices to be charged connected to the charger 330 of the equipment 30. Further, the image PIC 6 is displayed on the display 21 from the image PIC 4. The image PIC4 is an image showing the name of the device to be charged. The image PIC 6 is an image of an operation button for displaying a charging command screen for each charging target.
In this example, the user of the terminal device 20 displays a charging command screen for "EV1 car". In this case, the user taps the position of the image PIC6 with respect to the image PIC1. The operation detection unit 210 detects a tap operation with respect to the position of the image PIC 6. The terminal device 20 displays the screen shown in FIG. 9 in response to the detection of this tap operation.

The terminal device 20 may display an image PIC 5 showing the current position of the device to be charged (for example, the power storage device 40). The current position of the power storage device 40 is acquired by known means. The power storage device 40 may include a positioning means by GPS (Global Positioning System). In this case, the power storage device 40 notifies the server 10 of its own position specified by GPS.

FIG. 9 is a diagram showing an example of a charging operation screen of the terminal device 20 of the present embodiment. The image PIC 13 is displayed on the display 21 from the image PIC 7. The image PIC7 is an image of a clock showing the current time. The image PIC8 is an image for selecting the planned action destination, that is, the destination of the "EV1 car" to be charged. The image PIC 9 is an image for selecting the scheduled charging start time Ts. The image PIC10 is an image for selecting the scheduled departure time of the "EV1 car" to be charged. The image PIC 11 is an image for selecting the charging planning mode. The image PIC 12 is an image of an operation button for outputting a charging command CC to the charging target. The image PIC 13 is an image showing various information regarding charging to the charging target.
In the case of this example, the user of the terminal device 20 selects the action schedule of the "EV1 car" the next morning at 18:00 at the current time, and operates the charging instruction. Specifically, as shown in the figure, the user selects "destination: company", "scheduled charging start time: 0:00", "departure time: 6:00", and "charging planning mode: shortest time", respectively. Tap the "Enter" button.
That is, the operation detected by the operation detection unit 210 of the terminal device 20 includes a schedule instruction operation for instructing the charging plan of the power storage device 40.

As described above, the charge control unit 420 of the power storage device 40 can determine whether or not the charger 330 is connected to the storage battery 450. In this case, the charge control unit 420 outputs the connection information indicating whether or not the charger 330 is connected to the storage battery 450 to the server 10 together with the charge amount information CH. In this case, the charge control unit 420 performs information communication with the server 10 via the wireless communication module provided in the power storage device 40. For example, the charge control unit 420 outputs connection information indicating whether or not the charger 330 is connected to the storage battery 450 to the server 10 via the wireless communication module. Further, for example, the charge control unit 420 acquires the charge control information CNT from the server 10 via the wireless communication module. The charge control unit 420 outputs the connection information determined by the charge control unit 420 to the terminal device 20 on the server 10.
When this connection information indicates that the charger 330 is not connected to the storage battery 450, the terminal device 20 causes the display 21 to display the characters "the charging cable is not connected" as the image PIC 11. As a result, the charge control system 1 can notify the user of the terminal device 20 that the power storage device 40 cannot be charged.

[Charging plan mode of charging command CC]
The charge planning mode described above includes (1) the shortest time mode, (2) the end time designation mode, and (3) the market mode.

(1) Shortest time mode In this mode, the amount of charging power per time zone is planned so that charging is completed in the shortest time regardless of the selected departure time. When the shortest mode is selected, the charge plan generator 160 shortens the charge time by relatively increasing the amount of charge power per time zone while preventing the upper limit threshold value TH from being exceeded. Generate a charging plan.

(2) End time designation mode This mode plans the amount of charging power per time zone so that charging is completed by the selected departure time. When there is a relatively large amount of time until the departure time, the charge plan generation unit 160 generates a charge plan by relatively reducing the amount of charging power per time zone.

(3) Market mode Regardless of the selected departure time, the charging plan is generated so as to charge with a relatively large margin with respect to the upper limit threshold value TH. As a result, the scheduled charging end time Te may be extended or advanced. In this case, the charging plan generation unit 160 may notify the terminal device 20 of the changed charging end scheduled time Te.

[Generation of charging command CC]
In the following, (1) the case where the shortest time mode is selected will be described as an example. When the "OK" button shown in FIG. 9 is tapped, the terminal device 20 generates a charging command CC based on the selection result of the user. In the case of this example, "destination: company", "scheduled charging start time: 0:00", "departure time: 6:00", and "charging planning mode: shortest time" are selected.

FIG. 10 is a diagram showing an example of the charging command CC of the present embodiment. The terminal device 20 calculates the moving distance of the EV based on the selected destination. For example, when the distance from the equipment 30 to the company is 24 km, the terminal device 20 calculates 24 km as the moving distance when "company" is selected as the destination. Further, when the "shortest time" is selected as the charging planning mode, the terminal device 20 sets the scheduled charging end time Te to the "shortest".
The terminal device 20 generates a charging command CC with the charging planning mode as the "shortest time", the scheduled charging start time Ts as "0:00", the scheduled charging end time Te as the "shortest", and the moving distance as "24km".
In this example, the terminal device 20 calculates the moving distance of the EV, but the present invention is not limited to this. For example, the server 10 may calculate the moving distance of the EV. In this case, the position of the equipment 30 (for example, home) is stored in advance in the server 10. The server 10 acquires information indicating the destination of the EV from the terminal device 20, and calculates the distance from the home to the destination as the moving distance of the EV.

(Step S210) Returning to FIG. 7, the terminal device 20 transmits the charging command CC generated as described above to the server 10.
(Step S140) The command acquisition unit 110 of the server 10 acquires the charge command CC transmitted in step S210.

The charging command CC includes at least information indicating the scheduled charging end time Te. That is, the command acquisition unit 110 acquires a charging command CC including at least information indicating the scheduled charging end time Te of the power storage device 40. The command acquisition unit 110 supplies the acquired charge command CC to the charge plan generation unit 160.
Further, when the command acquisition unit 110 acquires the charge command CC, the command acquisition unit 110 transmits an output command of the charge amount information CH to the power storage device 40.

(Step S410) When the charge amount information output unit 410 of the power storage device 40 acquires the output command of the charge amount information CH from the server 10, the charge amount information CH is transmitted to the server 10. An example of this charge amount information CH is shown in FIG.

FIG. 11 is a diagram showing an example of the charge amount information CH of the present embodiment. The charge amount information output unit 410 outputs the full charge amount of the storage battery 450 and the current charge amount to the server 10 as the charge amount information CH. In this example, the full charge amount of the storage battery 450 is 3200 [Wh], and the current charge amount is 1750 [Wh]. In the case of this example, the charge rate of the storage battery 450 is about 55%.

(Step S150) Returning to FIG. 7, the charge amount information acquisition unit 120 of the server 10 acquires the charge amount information CH transmitted in step S410. The charge amount information acquisition unit 120 supplies the acquired charge amount information CH to the charge plan generation unit 160.

The server 10 may output the acquired charge amount information CH to the terminal device 20. In this case, the terminal device 20 displays an image (not shown) showing the charging state of the power storage device 40. That is, the charge control system 1 displays the charge state of the power storage device 40 on the terminal device 20 at the user's hand. As a result, the charge control system 1 can reduce the time and effort required for confirmation by the user as compared with the case where the user goes to the place where the power storage device 40 is located and checks the charging state of the power storage device 40.

(Step S160) The charging plan generation unit 160 acquires the consumption history HS from the consumption history storage unit 151.
(Step S170) The charge plan generation unit 160 acquires the upper limit threshold value TH from the threshold value storage unit 152.

(Step S180) The charge plan generation unit 160 generates the charge plan information PL based on the charge command CC acquired in each of the above steps, the charge amount information CH, the consumption history HS, and the upper limit threshold value TH. .. Hereinafter, the procedure for generating the charging plan information PL will be described in order.

[Target period of charging plan]
The charging plan generation unit 160 determines the target period of the charging plan based on the scheduled charging start time Ts and the scheduled charging end time Te indicated by the charging command CC. In the case of the example shown in FIG. 10, the charging plan generation unit 160 defines 0:00 as the target period of the charging plan between the scheduled charging start time Ts and the scheduled charging end time Te obtained by the following procedure.

[Calculation of required charging power RP]
The amount of power required to charge the storage battery 450, that is, the required amount of charging power RP can be calculated by various means.

(Calculation Example 1) The charge plan generation unit 160 calculates the required charge power amount RP based on the difference between the maximum charge amount of the storage battery 450 and the current remaining charge amount. In this case, the calculated required charging electric energy RP is the electric energy required to fully charge the storage battery 450.
(Calculation Example 2) The charging plan generation unit 160 calculates the amount of electric power required for charging based on the amount of electric power to be consumed by the storage battery 450. An example of calculating the required charging electric energy RP in the case of the calculation example 2 will be described with reference to FIG.

FIG. 12 is a diagram showing an example of the required charging electric energy RP of the present embodiment. The charging plan generation unit 160 calculates the required electric energy required for traveling based on the moving distance of "EV1 car" indicated in the charging command CC and the mileage per 1kWh of this "EV1 car". Here, the mileage per 1kWh of the "EV1 car" is stored in the server 10 in advance. In this example, the moving distance indicated by the charging command CC is 24 km, and the traveling distance per 1 kWh is 8 km. The charge plan generation unit 160 calculates the required electric energy required for traveling 24 km of "EV1 car" as 3000 Wh.
The charge plan generation unit 160 calculates the required charge power amount RP by subtracting the current charge amount indicated in the charge amount information CH from the calculated required power amount. In this example, the calculated required power amount is 3000 Wh, and the current charge amount is 1750 Wh. The charge plan generation unit 160 calculates the required charge electric energy RP as 1250 Wh.

The power storage device 40 is not limited to the electric vehicle. For example, when the power storage device 40 is a portable electric cooking device (for example, a hot plate), it may be possible to calculate the power consumption if the cooking content is known. In this case, the charging plan generation unit 160 calculates the planned power consumption by acquiring information indicating the cooking content of the hot plate from the user and calculating the required power amount.

[Estimation of power consumption]
Next, the estimation of the power consumption will be described with reference to FIG.
FIG. 13 is a diagram showing an example of the estimated power consumption of the present embodiment. At the time of generation of the charge plan, the target period of the charge plan is the future period. Therefore, the charge plan generation unit 160 generates a charge plan so as not to exceed the upper limit threshold value TH by estimating the power consumption amount in the target period of the charge plan based on the consumption history HS.
In estimating the power consumption, there are cases where (1) the latest power consumption PCS is taken into consideration and (2) the latest power consumption PCS is not taken into consideration.

(1) When considering the power consumption PCS immediately before For example, the charge plan generation unit 160 calculates the estimated power consumption amount based on the power consumption PCS immediately before the generation of the charge plan information PL (for example, 30 minutes immediately before). ..
Specifically, the charge plan generation unit 160 acquires the power consumption status information PC from the smart meter 310 immediately before the generation of the charge plan information PL. The charge plan generation unit 160 acquires the power consumption PCS of the same time zone on another day (for example, the previous week) corresponding to this time zone from the consumption history HS. The charge plan generation unit 160 compares the power consumption PCS immediately before the generation of the charge plan information PL with the power consumption PCS in the same time zone on another day corresponding to this time zone.
If the power consumption PCS immediately before is lower than the power consumption PCS in the same time zone on another day (for example, the previous week), the charge plan generation unit 160 calculates the estimated power consumption amount based on the consumption history HS.
On the other hand, if the power consumption PCS immediately before is higher than the power consumption PCS in the same time zone on other days, the charge plan generation unit 160 calculates the estimated power consumption by adding the difference to the consumption history HS. To do.
With this configuration, the estimated power consumption can be calculated more accurately than when the estimated power consumption is simply calculated based on the consumption history HS.

(2) When the immediately preceding power consumption PCS is not taken into consideration The charge plan generation unit 160 calculates the estimated power consumption amount based on the consumption history HS. In this case, the charge plan generation unit 160 acquires the power consumption amount on the same date and time and the same day of the week as when the charge plan information PL is generated from the consumption history HS, and calculates the estimated power consumption amount. Further, the charge plan generation unit 160 may improve the accuracy of estimation by obtaining a statistical value (for example, average or fluctuation range) of the electric energy recorded in the consumption history HS.

In any case, the charging plan generation unit 160 calculates the estimated power consumption amount by adding information indicating the situation affecting the power consumption PCS of the equipment 30 such as the weather and temperature around the equipment 30. May be good. In this case, in the consumption history HS, information indicating a situation that affects the power consumption PCS of the equipment 30, such as the weather and temperature around the equipment 30, may be recorded as a past history.

[Judgment threshold THD]
Next, the determination threshold THD will be described. The determination threshold THD is determined based on the upper threshold TH. As an example, the determination threshold THD is set in the range of 70 to 90% of the upper threshold TH. For example, when the upper limit threshold TH is 330 [Wh], the determination threshold THD is set to 275 [Wh]. As described above, the upper limit threshold TH is determined based on the power supply contract. If the amount of power consumed by the equipment 30 exceeds the upper limit threshold value TH, an additional power charge may be incurred. Therefore, if it can be determined that the amount of electric power consumed in the equipment 30 is likely to exceed the upper limit threshold value TH at a stage before the upper limit threshold value TH is exceeded, an additional electric power charge will not be incurred. The determination threshold THD is a threshold for determining that the amount of electric power consumed in the equipment 30 is likely to exceed the upper limit threshold TH.

The setting ratio of the determination threshold value THD to the upper limit threshold value TH may be determined based on the charge planning mode.
(1) When the charge planning mode is "shortest time" The charge plan generation unit 160 sets the determination threshold THD to a relatively high setting ratio (for example, 90% of the upper limit threshold TH). In this case, since the amount of charging power per time zone can be relatively high, the charging time can be shortened.
(2) When the charge planning mode is "designation of end time" The charge plan generation unit 160 sets the setting ratio of the determination threshold value THD to a relatively low value (for example, 70% of the upper limit threshold value TH). In this case, since the amount of charging power per time zone is kept relatively low, even if the power consumption PCS becomes larger than the estimated value, the power consumption is unlikely to exceed the upper limit threshold value TH. Therefore, charging can be performed as planned without reviewing the charging plan information PL, and it is possible to suppress a situation in which the charging end time is later than planned.

[Calculation of charging power for each time zone]
FIG. 14 is a diagram showing an example of the charging plan information PL of the present embodiment.
The charge plan generation unit 160 calculates the charge power amount for each time zone based on the difference between the above-mentioned determination threshold value THD and the estimated power consumption amount. Here, the estimated total power consumption for each time zone is the sum of the estimated power consumption for each time zone and the charging power for each time zone. The charge plan generation unit 160 determines the charge power amount for each time zone so that the estimated total power amount does not exceed the determination threshold value THD for each time zone.
The charge plan generation unit 160 sets the time when the integrated charge power amount, which is the sum of the charge power amounts for each time zone, reaches the required charge power amount RP as the scheduled charge end time Te. In this example, the integrated charging electric energy reaches 1250 [Wh], which is the required charging electric energy RP, in the time zone from 4:30 to 5:00. In this case, the charging plan generation unit 160 sets 5:00 as the scheduled charging end time Te.

The charge plan generation unit 160 consumes the margin of the estimated total electric energy with respect to the determination threshold value THD (that is, the magnitude of the difference between the determination threshold value THD and the estimated total electric energy for each time zone). It may be determined based on the estimation accuracy of the quantity. For example, when the estimation accuracy of the power consumption is relatively high, the margin of the estimated total power with respect to the determination threshold THD may be small. On the other hand, when the estimation accuracy of the power consumption is relatively low, there is a high possibility that the actual power consumption after the start of charging exceeds the determination threshold THD.
Therefore, when the estimation accuracy of the power consumption is relatively high, the charge plan generation unit 160 reduces the margin of the estimated total power with respect to the determination threshold value THD. In this case, the charging plan generation unit 160 can increase the amount of charging power per time zone, so that the charging time can be shortened. Further, when the estimation accuracy of the power consumption is relatively low, the charge plan generation unit 160 increases the margin of the estimated total power with respect to the determination threshold value THD. In this case, even if the difference between the actual power consumption and the estimated value becomes large, the charge plan generation unit 160 does not have to review the charge plan information PL and can perform charging as planned.

According to the above procedure, the charge plan generation unit 160 generates the charge plan information PL shown in FIG. The charge plan generation unit 160 stores the generated charge plan information PL in the charge plan storage unit 153.

The charging plan generation unit 160 may call attention to the terminal device 20 when the margin of the estimated total electric energy with respect to the upper limit threshold value TH is small. In this case, the charge plan generation unit 160 may change the content of the alert based on the result of comparing the margin allowance with the power consumption PCS when the electric device 320 other than the charger operates. For example, when an electric device 320 having a relatively large power consumption (for example, a microwave oven, an electromagnetic cooker, a dryer, etc.) operates, the power consumption may exceed the margin. In this case, the charging plan generation unit 160 displays the name of the electric device on the terminal device 20, and the operation of the electric device may cause the power consumption to exceed the upper limit threshold value TH. Notice.

Further, when the smart meter 310 outputs the power consumption status information PC to the server 10 at a shorter time interval instead of the 30-minute interval, the charging plan information PL may be generated as follows. For example, a case where the smart meter 310 calculates the power consumption PC01 by setting the integration of the power consumption PCS at intervals of 10 minutes will be described. In this case, the charge plan generation unit 160 acquires the power consumption PC01 every 10 minutes. The power consumption PC01 is a value obtained by integrating the power consumption for 10 minutes by the smart meter 310. When the charge plan generation unit 160 acquires the power consumption amount PC01, the charge plan generation unit 160 converts the acquired value of the power consumption amount PC01 into an integrated value for 30 minutes. For example, the charge plan generation unit 160 triples the acquired value of the power consumption PC01. The charge plan generation unit 160 calculates a margin allowance for the estimated total electric energy with respect to the upper limit threshold value TH for the converted integrated value for 30 minutes.
With this configuration, the charge plan generation unit 160 can generate the charge plan information PL with higher accuracy because the time interval for estimating the power consumption can be shortened.
For example, the charge plan generation unit 160 generates the charge plan information PL by dividing whether or not to charge the power storage device 40 every 10 minutes. In this case, the charge plan generation unit 160 generates the charge plan information PL by selecting either charging for 30 minutes, charging for 10 minutes or 20 minutes out of 30 minutes, or not charging for 30 minutes. ..

[(3) Execution of charging and update of charging plan information PL]
Next, the operation of executing charging and updating the charging plan information PL will be described with reference to FIG.
FIG. 15 is a diagram showing an example of the operation of executing charging and updating the charging plan information PL of the present embodiment.

(Step S1110) The charge control information generation unit 170 generates charge control information CNTs based on the charge plan information PL stored in the charge plan storage unit 153. The charge control information output unit 180 transmits the generated charge control information CNT to the charge control unit 420 of the power storage device 40.
(Step S1410) The charge control unit 420 acquires the charge control information CNT transmitted in step S1110.
(Step S1420) The charge control unit 420 controls charging of the storage battery 450 by controlling the open / closed state of the switch 440 based on the charge control information CNT.
(Step S1430) The charge amount information output unit 410 generates a charge amount information CH indicating the charge state of the storage battery 450, and transmits the charge amount information CH to the server 10 via the generated charge amount information CH.

(Step S1320) The smart meter 310 transmits the power consumption status information PC to the server 10 for each time zone.
(Step S1120) The power consumption status information acquisition unit 130 acquires the power consumption status information PC transmitted by the smart meter 310. The power consumption status information acquisition unit 130 supplies the acquired power consumption status information PC to the charge plan generation unit 160.

(Step S1130) The charge plan generation unit 160 is the difference between the estimated total power amount calculated at the time of generating the charge plan information PL and the actual power consumption amount of the equipment 30 indicated by the power consumption status information PC acquired in step S1120. Judgment, that is, prediction / actual deviation judgment is performed.
In the following description, the charge plan generation unit 160 updates the charge plan information PL. The charge plan generation unit 160 is also referred to as a charge plan update unit.

[Difference between forecast and reality]
FIG. 16 is a diagram showing an example of a transition of the power consumption amount after the start of charging of the present embodiment. The charge plan generation unit 160 determines for each time zone whether or not the total of the measured value of the power consumption PCS of the equipment 30 and the measured value of the supplied power PCH exceeds the determination threshold value THD.
In the case of the example shown in FIG. 16, in the time zone (0:30 to 1:00), the measured power supply PCH is larger than the estimated power consumption P0 by the power amount P1. Therefore, the charging electric energy P2 for each time zone in the same time zone exceeds the determination threshold value THD by the electric energy P2-1 minutes. In this case, the charging plan generation unit 160 determines that the total of the measured value of the power consumption PCS and the measured value of the supplied power PCH exceeds the determination threshold value THD in the time zone (0:30 to 1:00). judge.
As described above, the charge plan generation unit 160 determines every 30 minutes as an example, and may make a determination at a shorter time interval (for example, every 5 minutes or 10 minutes).

(Step S1140) The charge plan generation unit 160 determines whether or not the charge plan information PL needs to be updated. When the charge plan generation unit 160 determines in step S1130 that the total of the measured value of the power consumption PCS and the measured value of the supplied power PCH does not exceed the determination threshold value THD, it is not necessary to update the charge plan information PL. (Step S1140; NO), and the process proceeds to step S1160. On the other hand, when the charging plan generation unit 160 determines in step S1130 that the total of the measured value of the power consumption PCS and the measured value of the supplied power PCH exceeds the determination threshold value THD, the charging plan information PL It is determined that the update is necessary (step S1140; YES), and the process proceeds to step S1150.

[Update of charging plan information PL]
(Step S1150) The charge plan generation unit 160 updates the charge plan information PL. The update of the charge plan information PL will be described with reference to FIG.
FIG. 17 is a diagram showing an example of updating the charging plan information PL of the present embodiment. The update patterns of the charge plan information PL include (1) update pattern 1: when the scheduled charge end time Te is not changed, (2) update pattern 2: when the scheduled charge end time Te is changed, and (3). Update pattern 3: The determination threshold THD may be changed to continue charging.

(1) Update pattern 1: When the scheduled charge end time Te is not changed The charge plan generation unit 160 distributes the electric energy P2-1 that exceeds the determination threshold value THD to another time zone. In this example, the charge plan generation unit 160 distributes the electric energy P2-1 to a plurality of time zones. For example, the charge plan generation unit 160 powers the electric energy P3 from 1:00 to 1:30 in the time zone, the electric energy P4 from 1:30 to 2:00 in the time zone, and powers from 2:00 to 2:30 in the time zone. The amount P5 is distributed to the electric energy P5 from 2:30 to 3:00 in the time zone. Here, the total value of the electric energy P3 to P5 is equal to the electric energy P2-1.
Pattern 1 of this update is suitable when the margin of the estimated total power amount with respect to the determination threshold value THD is relatively large.

(2) Update pattern 2: When changing the scheduled charging end time Te The charging plan generation unit 160 extends the scheduled charging end time Te to the scheduled charging end time Te2. The charge plan generation unit 160 updates the charge plan information PL so as to charge the electric energy P2-1 corresponding to the amount exceeding the determination threshold value THD in the extended time zone. In this example, the charge plan generation unit 160 updates the charge plan information PL so as to charge the electric energy P7 corresponding to the electric energy P2-1 in the extended time zone from 5:00 to 5:30.
This update pattern 2 is suitable when the margin of the estimated total power amount with respect to the determination threshold THD is relatively small and the plan cannot be established depending on the update pattern 1.

If the scheduled charging end time Te is specified by the user of the terminal device 20 and it is expected that charging cannot be completed by the scheduled charging end time Te, the charging plan generation unit 160 may use the terminal device. You may notify 20 to that effect. In this case, the terminal device 20 may display an image for selecting whether or not to approve the change of the scheduled charging end time Te, and let the user of the terminal device 20 select it. Further, when the user does not approve the change of the scheduled charging end time Te, the charging plan generation unit 160 updates the charging plan information PL so as to ignore the determination threshold value THD and charge in the shortest time. May be good.

(3) Update pattern 3: When the determination threshold THD is changed and charging is continued The charging plan generation unit 160 changes the determination threshold THD. For example, the determination threshold THD may be set relatively lower than the upper threshold TH. In this case, even if the total of the measured value of the power consumption PCS and the measured value of the supplied power PCH exceeds the judgment threshold value THD and continues charging as it is, the upper limit threshold value TH is not reached. There is. In this case, the charge plan generation unit 160 changes the setting ratio of the determination threshold value THD to the upper limit threshold value TH to be high, and continues charging in this time zone.

(Step S1430) The charge amount information output unit 410 of the power storage device 40 transmits the charge amount information CH to the server 10.
(Step S1160) The charge amount information acquisition unit 120 of the server 10 acquires the charge amount information CH transmitted in step S1430. The charge amount information acquisition unit 120 supplies the acquired charge amount information CH to the charge plan generation unit 160.

(Step S1170) The charge plan generation unit 160 determines whether or not the current charge amount of the storage battery 450 indicated by the charge amount information CH acquired in step S1160 has reached the required electric energy amount (for example, 3000 Wh shown in FIG. 12). To judge. When the charge plan generation unit 160 determines that the current charge amount of the storage battery 450 has reached the required electric energy (step S1170; YES), the process proceeds to step S1180. When the charge plan generation unit 160 determines that the current charge amount of the storage battery 450 has not reached the required electric energy (step S1170; NO), the process returns to step S1110.

[Charge control when the judgment threshold THD is exceeded]
The charge control information generation unit 170, the charge control information output unit 180, and the charge control unit 420 repeat the above-mentioned steps S1110 and S1410 to control the open / closed state of the switch 440 to control the charge of the storage battery 450. ..
When the sum of the measured value of the power consumption PCS and the measured value of the supplied power PCH exceeds the determination threshold value THD in a certain time zone, the charge control information generation unit 170 turns off the switch 440 in this time zone. Control to state. In this case, the charge control information generation unit 170 generates the charge control information CNT that controls the switch 440 in the off state. The charge control information output unit 180 transmits the charge control information CNT that controls the switch 440 to the off state to the charge control unit 420. As a result, the switch 440 is turned off, and charging of the storage battery 450 is temporarily stopped.
The charge control information generation unit 170 determines, based on the charge plan information PL, whether or not this time zone is planned to be the time zone for charging when the next time zone indicated by the charge plan information PL is reached. .. When it is the time zone for charging, the charge control information generation unit 170 generates the charge control information CNT that controls the switch 440 in the ON state. The charge control information output unit 180 transmits the charge control information CNT that controls the switch 440 to the ON state to the charge control unit 420. As a result, the switch 440 is turned on and charging of the storage battery 450 is restarted.

(Step S1180) The server 10 notifies the terminal device 20 that charging is completed, and ends a series of operations.
(Step S1210) When the server 10 notifies that the charging is completed, the terminal device 20 displays an image indicating that the charging is completed on the display 21 and ends a series of operations.

[Summary of Embodiment]
As described above, the charge control system 1 includes a charge control information output unit 180 that outputs charge control information CNTs to the charge control unit 420 that controls charging of the power storage device 40. The charge control information CNT is generated by being separated at predetermined time intervals (that is, for each time zone) based on the charge plan information PL and the power consumption status information PC. The charge control system 1 supplies a desired amount of electric power to the power storage device 40 to charge the storage battery 450. Here, both the charging plan information PL and the power consumption status information PC are generated every predetermined time width (30 minutes in the above-mentioned example of the embodiment). This time width corresponds to the time width of charge calculation in the electric power contract. The charge control system 1 performs charge control based on the charge plan information PL divided for each time width. If charging control is performed so as not to exceed the upper limit threshold value TH set for each time width, the power consumption can be controlled so that the unit price of the electricity charge does not increase. By performing charge control based on the charge plan information PL corresponding to the time width of charge calculation in this way, the charge control system 1 can perform charge control in consideration of fluctuations in the unit price of the electricity charge.
Further, since the charge control system 1 performs charge control based on the charge plan information PL planned in advance, it is possible to notify the user of the scheduled completion time of charging before the start of charging.

Further, the charge control system 1 includes a charge plan update unit (charge plan generation unit 160 in one example of the above-described embodiment) that updates after charging based on the charge plan information PL is started. Therefore, according to the charge control system 1, when the actual power consumption status deviates from the charge plan planned in advance, the user can be notified of the updated charge end time.

Further, in the charge control system 1, the charge plan update unit updates the charge plan information PL when the power consumption status for each predetermined time indicated by the power consumption status information PC exceeds the upper limit threshold value TH. Here, when the upper limit threshold value TH is exceeded, a situation occurs in which the upper limit threshold value TH can be exceeded. The charge plan update unit updates the charge plan information PL so as not to exceed the upper limit threshold value TH. Therefore, the charge control system 1 charges while controlling the power consumption so that the unit price of the electricity charge does not increase even if the actual power consumption status deviates from the charge plan planned in advance. You can continue.

Further, in the charge control system 1, the charge plan update unit updates the charge plan information PL by changing the scheduled charge end time Te indicated by the charge plan information PL before the update. As a result, the charge control system 1 can complete the required amount of charging by extending the scheduled charging end time Te even if the upper limit threshold value TH can be exceeded when charging is continued. Further, the charge control system 1 can complete charging earlier than originally planned by shortening the scheduled charge end time Te when there is a sufficient margin for the upper limit threshold value TH. ..

Further, in the charge control system 1, the charge plan update unit updates the charge plan information PL by changing the required charge power amount RP for each predetermined time indicated by the charge plan information PL before the update. As a result, the charge control system 1 can continue charging without exceeding the upper limit threshold value TH even when the estimated power consumption and the actual power consumption deviate from each other.

Further, the charge control system 1 includes a charge plan generator 160 in which the server 10 generates charge plan information PL based on the charge command CC, the charge amount information CH, the consumption history HS, and the upper limit threshold value TH. ing. Since the charge control system 1 can generate a charge plan based on the consumption history HS, it is possible to accurately generate a charge plan in consideration of fluctuations in the unit price of electricity charges. Further, the time width of the charge plan information PL generated by the charge plan generation unit 160 corresponds to the time width of the charge calculation in the electric power contract. By performing charge control based on the charge plan information PL corresponding to the time width of charge calculation, the charge control system 1 can perform charge control in consideration of fluctuations in the unit price of electricity charges.

Further, the charge control system 1 generates a consumption history HS that generates a consumption history HS based on the power consumption status for each predetermined time indicated by the power consumption status information PC and the power consumption date and time indicating the timing at which the power is consumed. The unit 140 is provided. Since the time width of the consumption history HS corresponds to the time width of the charge calculation in the electric power contract, the charge control system 1 can perform charge control in consideration of the fluctuation of the unit price of the electric power charge. Further, since the consumption history HS includes information indicating the date and time of power consumption, when the charge control system 1 estimates the power consumption, the power on the same past day or date and time having a similar power consumption pattern. You can refer to the status of consumption. Therefore, the charge control system 1 can estimate the power consumption more accurately.

Further, in the charge control system 1, the charge command CC includes information (for example, a planned travel distance) indicating the amount of electric power required for traveling of the electric vehicle. As a result, the charge control system 1 can calculate the required charge electric energy RP based on the planned travel distance. As a result, the charge control system 1 can set the charge time to a time corresponding to the required charge electric energy RP. For example, when the required charging electric energy RP is smaller than the fully charged amount of the storage battery 450, charging can be completed in a shorter time than when the storage battery 450 is fully charged.

[Modification example of charge planning mode (1): In end time specification mode]
FIG. 18 is a diagram showing an example of a charging command CC in the case of the end time designation mode of the present embodiment. In this case, the scheduled charging end time Te differs from the above-described embodiment in that the time is specified instead of the “shortest”. In this case, the terminal device 20 charges with the charging plan mode set to "end time designation", the scheduled charging start time Ts set to "0:00", the scheduled charging end time Te set to "6:30", and the moving distance set to "24 km". Generate command CC.

FIG. 19 is a diagram showing an example of the charging plan information PL in the case of the end time designation mode of the present embodiment. When the end time designation mode is selected, the charge plan generation unit 160 generates the charge plan information PL so that charging is completed by the designated charge end scheduled time Te. In the charging plan information PL generated by this end time designation mode, the amount of charging power for each time zone is suppressed to be low as compared with the shortest time mode (FIG. 14) described above, and the margin for the determination threshold value THD is large.

[Modification example of charge planning mode (2): In case of market mode]
FIG. 20 is a diagram showing an example of a charging command CC in the case of the market mode of the present embodiment. In this case, the scheduled charging end time Te is different from the above-described embodiment in that it is set to "no designation" instead of "shortest" or "time designation". In this case, the terminal device 20 sets the charging planning mode as "end time designation", the scheduled charging start time Ts as "0:00", the scheduled charging end time Te as "not specified", and the moving distance as "24km". Generate CC.

When the market mode is selected, the charge plan generation unit 160 is required to charge the required power amount while securing a margin by suppressing the charge power amount for each time zone with respect to the determination threshold value THD. Time, that is, the scheduled charging end time Te is calculated. In this case, the charging plan generation unit 160 may notify the terminal device 20 of the calculated scheduled charging end time Te.

[Modification example: Discharge control]
Further, the case where the charge control system 1 controls the charge of the power storage device 40 has been described so far. When the power storage device 40 is a device capable of supplying electric power to the outside, the charge control system 1 may control the discharge of the power storage device 40. In this case, the charge control system 1 is configured as follows.

The operation detected by the operation detection unit 210 of the terminal device 20 includes a discharge command operation for commanding discharge from the power storage device 40.
The command output unit 220 of the terminal device 20 outputs the discharge command DC of the power storage device 40 based on the discharge command operation detected by the operation detection unit 210 to the server 10.
The power storage device 40 further includes a discharge control unit 460 (not shown) that controls the discharge of the storage battery 450.
The command acquisition unit 110 of the server 10 acquires the discharge command DC output by the terminal device 20. The discharge control information generation unit 190 (not shown) generates discharge control information for controlling the discharge of the storage battery 450 based on the charge amount information CH, the power consumption status information PC, and the charge command CC. The charge control information output unit 180 outputs the discharge control information generated by the discharge control information generation unit 190 to the power storage device 40.
Here, the discharge control information generation unit 190 may control the discharge of the storage battery 450 by comparing the power consumption status information PC with the upper limit threshold value TH. For example, the discharge control information generation unit 190 discharges the storage battery 450 when it is determined that the power consumption of the equipment 30 indicated by the power consumption status information PC exceeds the upper limit threshold value TH. With this configuration, the power consumption of the charge control system 1 increases in the equipment 30, and the power consumption exceeds the upper limit value (for example, the upper limit threshold value TH) in the power consumption contract of the equipment 30. In this case, power can be supplied from the power storage device 40 to the equipment 30. As a result, the charge control system 1 can prevent the power consumption from exceeding the upper limit value set in the power consumption contract of the equipment 30.
In the above case, the discharge control information generation unit 190 may determine the discharge schedule according to the situation of the power storage device 40. For example, when the power storage device 40 is an electric vehicle, the discharge control information generation unit 190 may determine whether or not to discharge and the amount of discharge power based on the current position, action schedule, and charging plan of the electric vehicle.
Further, the discharge control information generation unit 190 may notify the terminal device 20 when it is determined to discharge from the power storage device 40 and request the discharge permission by the user of the terminal device 20.

Further, in this modification, the discharge control information generation unit 190 may generate control information for the power storage device 40 based on a user classification predetermined for each user of the terminal device 20. An example of this user classification will be described with reference to FIG.

FIG. 21 is a diagram showing an example of user classification of the present embodiment. In this example, the user classification is a classification of whether the contractor of the terminal device 20 is a "parent" or a "child". The terminal device 20-1 is a master unit. The terminal device 20-2 is a slave unit. In this case, the charge control system 1 makes the operation permitted to the master unit (terminal device 20-1) different from the operation permitted to the slave unit (terminal device 20-2). Specifically, the charge control system 1 allows a "charge instruction" and a "discharge instruction" to the master unit. In this case, the master unit can issue a charging instruction and a discharging instruction. Further, the charge control system 1 permits a "charge instruction" and does not allow a "discharge instruction" for the slave unit. In this case, the slave unit can give a charging instruction, but cannot give a discharging instruction.
In this example, the "discharge instruction" is an instruction to reduce the amount of electricity stored in the power storage device 40. Therefore, if "discharge instruction" is permitted for a plurality of terminal devices 20, when a user of a certain terminal device 20 tries to use the power storage device 40, another user of the terminal device 20 may use it. A situation may occur in which the power storage device 40 cannot be used because the discharge instruction has already been given. The charge control system 1 in this modification can limit the terminal device 20 capable of giving a "discharge instruction" by providing the terminal device 20 with a user classification. As a result, the charge control system 1 reduces the degree to which a careless "discharge instruction" is given to the power storage device 40, and when the power storage device 40 is desired to be used, a situation occurs in which the power storage amount is too small to be used. be able to.

[Other variants]
The server 10 can grasp the power consumption status of the equipment 30 for each equipment 30. When the power contractor of the equipment 30 and the user of the terminal device 20 are the same person, the server 10 outputs various information based on the power consumption status of the equipment 30 to the terminal device 20. Therefore, various information can be provided to the owner of the equipment 30.
For example, the server 10 gives a statistical value such as an average value of power consumption of the equipment 30 in a predetermined period to the contractor of the power supply contract of the equipment 30 including the charger 330 (for example, the owner of the equipment 30). By calculating, a more suitable (for example, cheaper than the current power supply contract) power contract plan is determined. The server 10 can give the user an opportunity to review the electric power contract by having the terminal device 20 present the determined electric power contract plan.

The server 10 may perform not only charge control for the power storage device 40 but also power supply control for other electric devices 320. For example, as another electric device 320, the server 10 may be configured to control the operation of a device having relatively high power consumption, such as a dryer or an electric water heater.
With this configuration, the server 10 can be controlled so as to prioritize charging of the power storage device 40 over the operation of the other electric device 320.

Although the embodiments of the present invention and modifications thereof have been described above, these embodiments and modifications thereof are presented as examples, and are not intended to limit the scope of the invention. These embodiments and modifications thereof can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and at the same time, are included in the scope of the invention described in the claims and the equivalent scope thereof.

Each of the above-mentioned devices has a computer inside. The process of each process of each device described above is stored in a computer-readable recording medium in the form of a program, and the process is performed by the computer reading and executing this program. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

Further, the above program may be for realizing a part of the above-mentioned functions.
Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned functions in combination with a program already recorded in the computer system.

10 ... server, 110 ... command acquisition unit, 120 ... charge amount information acquisition unit, 130 ... power consumption status information acquisition unit, 140 ... consumption history generation unit, 150 ... storage unit, 160 ... charge plan generation unit, 170 ... charge control Information generation unit, 180 ... Charge control information output unit, 20 ... Terminal device, 210 ... Operation detection unit, 220 ... Command output unit, 30 ... Equipment, 310 ... Smart meter, 330 ... Charger, 40 ... Power storage device, 410 ... Charge amount information output unit, 420 ... Charge control unit, 440 ... Switch, 450 ... Storage battery

Claims (10)

A command acquisition unit that acquires charging command information that includes at least information indicating the scheduled charging end time of the power storage device, and
A charge amount information acquisition unit that acquires charge amount information indicating the charge amount of the power storage device, and
A consumption history storage unit that stores the consumption history of electric power for each predetermined time consumed by an electric device other than the power storage device provided in a facility provided with a charger for charging the power storage device.
A threshold storage unit that stores the upper limit threshold of the power consumption for each predetermined time based on the power contract of the equipment, and
As a charging plan showing the required charging power amount required for charging the power storage device by the charger at predetermined time intervals and the scheduled charging end time, the charging command information, the charging amount information, the consumption history, and the upper limit A charging plan storage unit that stores charging plan information generated based on the threshold value and
A power consumption status information acquisition unit that acquires power consumption status information indicating the power consumption status for each predetermined time consumed in the equipment at a time interval shorter than the predetermined time of the charging plan.
Said charging plan information, and the power consumption status information, the based on the determined threshold value defined in the value smaller than the upper limit threshold value, the electric storage device the charging plan the charging control information for controlling the charging of It is generated at a time interval shorter than the predetermined time, and the power consumption in the equipment indicated by the power consumption status information and the charger in a certain time zone at each predetermined time indicated by the charging plan information. When the sum with the charging power supplied to the power storage device exceeds the determination threshold value, the charging control information generation that generates the charging control information for stopping the charging of the power storage device in the time zone is generated. Department and
A charge control information output unit that outputs the charge control information generated by the charge control information generation unit to the charge control unit that controls charging of the power storage device.
Charge control server with. Based on the amount of power to be charged to the power storage device, the scheduled charging end time, the power consumption status information, the upper limit threshold value, and the consumption history, the charging plan information for each predetermined time is obtained. The charge control server according to claim 1, further comprising a charge plan update unit that updates after charging based on charge plan information is started. The charging plan update unit
The charge control server according to claim 2, wherein the charge plan information is updated when the power consumption status for each predetermined time indicated by the power consumption status information exceeds the determination threshold value. The charging plan update unit
The charge control server according to claim 2 or 3, wherein the charge plan information is updated by changing the scheduled charge end time indicated by the charge plan information before the update. The charging plan update unit
The charge control server according to any one of claims 2 to 4, which updates the charge plan information by changing the required charge power amount for each predetermined time indicated by the charge plan information before the update. Before charging based on the charge plan information is started, the charge command information, the charge amount information, the consumption history, and the determination threshold value set to a value smaller than the upper limit threshold value. The charge control according to any one of claims 1 to 5, further comprising a charge plan generation unit that generates the charge plan information based on the above and stores the generated charge plan information in the charge plan storage unit. server. The consumption history is generated based on the power consumption status for each predetermined time indicated by the power consumption status information and the power consumption date and time indicating the timing when the power is consumed, and the generated consumption history is stored in the consumption history storage. The charge control server according to any one of claims 1 to 6, further comprising a consumption history generation unit to be stored in the unit. The power storage device includes a storage battery for driving an electric vehicle.
The required charging power amount is calculated based on the predicted value of the mileage of the electric vehicle.
The charging command information includes the required charging power amount information indicating the required charging power amount of the power storage device.
The charging control according to any one of claims 1 to 7, wherein the charging plan information is further generated based on the required charging electric energy indicated by the required charging electric energy information included in the charging command information. server. A terminal device having a command output unit that outputs charging command information including at least information indicating the scheduled charging end time of the power storage device, and
A command acquisition unit that acquires the charging command information output by the terminal device, and
A charge amount information acquisition unit that acquires charge amount information indicating the charge amount of the power storage device, and
A consumption history storage unit that stores the consumption history of electric power for each predetermined time consumed by an electric device other than the power storage device provided in a facility provided with a charger for charging the power storage device.
A threshold storage unit that stores the upper limit threshold of the power consumption for each predetermined time based on the power contract of the equipment, and
As a charging plan showing the required charging power amount required for charging the power storage device by the charger at predetermined time intervals and the scheduled charging end time, the charging command information, the charging amount information, the consumption history, and the upper limit A charging plan storage unit that stores charging plan information generated based on the threshold value and
A power consumption status information acquisition unit that acquires power consumption status information indicating the power consumption status for each predetermined time consumed in the equipment at a time interval shorter than the predetermined time of the charging plan.
Said charging plan information, and the power consumption status information, the based on the determined threshold value defined in the value smaller than the upper limit threshold value, the electric storage device the charging plan the charging control information for controlling the charging of The power consumption in the equipment indicated by the power consumption status information is determined in a certain time zone at each predetermined time indicated by the charging plan information, which is generated at a time interval shorter than the predetermined time. When the threshold value is exceeded, the charge control information generation unit that generates the charge control information that stops charging of the power storage device in the time zone, and the charge control information generation unit.
A charge control information output unit that outputs the charge control information generated by the charge control information generation unit to the charge control unit that controls charging of the power storage device at predetermined time intervals.
With a charge control server,
A power consumption status measuring device that measures the power consumption status for each predetermined time consumed in the facility and outputs power consumption status information indicating the measured consumption status to the charge control server.
Charge control system with. For computers equipped with a charge control server
A command acquisition step for acquiring charging command information that includes at least information indicating the scheduled charging end time of the power storage device, and
A charge amount information acquisition step for acquiring charge amount information indicating the charge amount of the power storage device, and
A consumption history storage step of storing the consumption history of electric power for each predetermined time consumed by an electric device other than the power storage device provided in the equipment provided with a charger for charging the power storage device in the consumption history storage unit.
An upper threshold storage step for storing the upper threshold of the power consumption for each predetermined time in the threshold storage unit based on the power contract of the equipment, and an upper threshold storage step.
The charging command information acquired in the command acquisition step and the charging amount information acquisition as a charging plan indicating the required charging power amount required for charging the power storage device by the charger at predetermined time intervals and the scheduled charging end time. A charging plan generated based on the charge amount information acquired in the step, the consumption history stored in the consumption history storage step, and the upper limit threshold stored in the upper limit threshold storage step. The charging plan information acquisition step of acquiring the charging plan information from the charging plan storage unit in which the information is stored, and the charging plan information acquisition step.
A power consumption status information acquisition step for acquiring power consumption status information indicating the power consumption status for each predetermined time consumed in the equipment at a time interval shorter than the predetermined time of the charging plan, and
From the charging plan information acquired in the charging plan information acquisition step, the power consumption status information acquired in the power consumption status information acquisition step, and the upper limit threshold value stored in the upper limit threshold storage step. based on the determination threshold is also determined by a small value, and generating at a time interval shorter than the predetermined time of the charging plan the charging control information for controlling the charging of said power storage device, the charging When the power consumption of the equipment indicated by the power consumption status information exceeds the determination threshold value in a certain time zone of the predetermined time indicated by the plan information, the power storage device is charged in the time zone. The charge control information generation step for generating the charge control information to be stopped, and
A charge control information output step that outputs the charge control information generated in the charge control information generation step to a charge control unit that controls charging of the power storage device at predetermined time intervals.
A program to execute.

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