JP6037678B2 - Storage battery charge / discharge control device and storage battery charge / discharge control system - Google Patents

Description

  The present invention relates to a storage battery charge / discharge control device and a storage battery charge / discharge control system for controlling charge / discharge of a storage battery.

  There has been a device for charging a storage battery in consideration of a charging time zone.

  For example, Patent Document 1 proposes an invention of a storage battery charge / discharge device that creates a charge / discharge schedule based on electricity rate information and storage battery information, and charges / discharges the storage battery based on the created schedule. Yes.

JP 2010-268602 A

  However, the technique described in Patent Document 1 has a problem that it does not consider the suitability of the created charge / discharge schedule.

  The present invention has been made in consideration of the above-described facts, and an object of the present invention is to provide a storage battery charge / discharge control device that determines the suitability of a set storage battery charge and discharge schedule.

The invention of claim 1 for solving the above problems, and is capable of inputting means inputs for setting the planned charging time for charging the discharging expected time and storage battery discharging the storage battery, which is set through the input means Transmitting means for transmitting the scheduled discharging time and the scheduled charging time; receiving the scheduled discharging time and the scheduled charging time transmitted by the transmitting means; and a time zone in which the scheduled discharging time and the scheduled charging time overlap. And the result of the determination is transmitted, and if there is an overlapped time zone between the scheduled discharge time and the scheduled charge time, the specified time zone is specified by identifying the overlapped time zone An information center for transmitting the information, a receiving means for receiving information from the information center, and a time when the receiving means overlaps the scheduled discharge time and the scheduled charge time from the information center. A display means for displaying a warning including a display of the overlapped time zone, and a power consumption measuring means for measuring the power consumption amount of the building when the information on the overlapped time zone is received. Charging / discharging control means for controlling charging or discharging the storage battery, and the transmission means transmits the power consumption of the building measured by the power consumption measurement means to the information center, In the information center, when the power consumption of the building is equal to or greater than a predetermined threshold, and when the scheduled discharge time and the scheduled charge time overlap, the scheduled discharge time and the scheduled charge time overlap. A control command for prohibiting charging of the storage battery during the time period in which the charging is performed, and the charging / discharging control unit is configured to transmit the scheduled discharge time and the charging / discharging unit according to the command received by the receiving unit from the information center. And the scheduled time is to prohibit the charging of the battery in a time zone that is duplicated.

According to the first aspect of the present invention, in the information center, it is possible to determine whether or not there is a time zone where the scheduled discharge time and the scheduled charge time overlap. In addition, when the information center determines that the supply and demand of electric power in the building is tight, the information center can prohibit charging of the storage battery in a time zone where the scheduled discharge time and the scheduled charge time overlap.

The invention according to claim 2 is the invention according to claim 1 , wherein the information center is applied to supply power to a building where the storage battery is provided by a rate plan in which a unit price of an electricity rate changes according to a time zone. If it is, the information on the rate plan applied to the power supply of the building and the unit price of the electricity rate in the rate plan is obtained from the provider supplying power to the building, and the received Whether the scheduled discharge time is set in a time zone where the unit price of the electricity rate is low in the rate plan, or whether the received scheduled charge time is set in a time zone where the electricity rate is high in the rate plan If the scheduled discharge time is set in a time zone where the unit price of electricity charges is low in the rate plan, the scheduled discharge time is set in a time zone where the unit price of electricity charges is high in the rate plan. If the scheduled charging time is set to a time zone when the electricity plan is high in the price plan, the unit price of the electricity charge is low in the charging plan. A message recommending setting to a time zone is created, and the created message is transmitted. When the receiving means receives the message from the information center, the display means issues a warning including the message. indicate.

According to the second aspect of the present invention, the information center determines whether the set scheduled discharge time and the scheduled charge time have a cost merit in the electricity rate plan applied to the building. be able to.

The invention according to claim 3 is the invention according to claim 1 or 2 , wherein the information center is configured such that the power consumption amount of the building is equal to or greater than a predetermined threshold, and the estimated discharge time and the estimated charge time are In the case of overlapping, the charging of the storage battery is prohibited during the time zone in which the scheduled discharge time and the scheduled charging time overlap, and a control command for discharging the storage battery is transmitted, and the charge / discharge control The means prohibits charging of the storage battery and discharges the storage battery in a time zone in which the scheduled discharge time and the scheduled charge time overlap according to a command received from the information center by the receiving means.

According to the third aspect of the present invention, when the information center determines that the supply and demand of electric power in the building is tight, in the time zone where the scheduled discharge time and the scheduled charge time overlap, Charging is prohibited and the storage battery can be discharged.

According to the first aspect of the present invention, the information center can determine the suitability of the set storage battery charging and discharging schedule by determining the presence or absence of overlapping time zones between the scheduled discharging time and the scheduled charging time. It has the effect. In addition, when it is determined that the supply and demand of power in the building is tight, the power consumption in the building is reduced by prohibiting charging of the storage battery in the time zone where the scheduled discharge time and the scheduled charge time overlap. It has the effect that it can be reduced.

According to the second aspect of the present invention, the information center determines whether or not the set scheduled discharge time and the scheduled charge time have a cost merit in the charge plan of the electricity rate applied to the building. Thereby, it has the effect that the discharge scheduled time and charge scheduled time of a storage battery can be set appropriately.

According to the third aspect of the present invention, when it is determined that the supply and demand of power in the building is tight, charging of the storage battery is prohibited in a time zone where the scheduled discharge time and the scheduled charge time overlap. By discharging the storage battery, the power of the storage battery can be supplied to the building.

1 is a schematic view showing an overall image of a system including a storage battery charge / discharge control device according to a first embodiment of the present invention. It is a figure which shows the outline of an example of the charge plan of an electricity bill. It is a block diagram which shows schematic structure of HEMS which is the storage battery charging / discharging control apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the setting of the charge time of a storage battery, and the discharge time. 3 is a flowchart for determining the suitability of setting of a scheduled charging time and a scheduled discharging time in the first embodiment of the present invention. It is a schematic diagram of the storage battery and storage battery control apparatus which concern on the 2nd Embodiment of this invention. It is a flowchart of control of charge and discharge of a storage battery in the second embodiment of the present invention.

[First embodiment]
Hereinafter, an example of the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing an overall image of a system including a storage battery charge / discharge control device according to the present embodiment.

  The building 10 is provided with a distribution board 14 to which the system power 12 supplied from the power company is connected, so that the power from the system power 12 is supplied into the building 10 through the distribution board 14. It has become.

  The building 10 is provided with a solar power generation device 16, and the electric power generated by the solar power generation device 16 is supplied to the distribution board 14.

  The solar power generation device 16 includes an inverter that can convert the direct current generated by the solar power generation device 16 into alternating current (for example, 100 V, 50 Hz) supplied from the distribution board 14 to the home appliance 20 and the housing equipment 22. Conversion means (not shown) is provided

  Between the photovoltaic power generation device 16 and the distribution board 14, a photovoltaic power generation current voltage sensor 54 capable of measuring the current value and voltage value of the electric power supplied from the photovoltaic power generation device 16 to the distribution board 14 is provided. It has been. The current value and voltage value measured by the photovoltaic power generation current / voltage sensor 54 can be transmitted to a HEMS (Home Energy Management System) 30 described later via the distribution board 14.

  The distribution board 14 is connected to home appliances 20 and housing equipment 22 provided in the building 10 as a plurality of power supply destinations, and is supplied with power from the grid power 12.

  In addition, the distribution panel 14 manages and controls the storage battery 90 capable of charging the power supplied from the grid power 12 and the photovoltaic power generation device 16 and the energy in the building, and controls charging and discharging of the storage battery 90. HEMS30 which is a storage battery charging / discharging control apparatus is connected.

  The storage battery 90 is a secondary battery that can be charged and discharged, such as a lead storage battery, a nickel metal hydride battery, or a lithium ion battery. Since one cell of these secondary batteries has an electromotive force of approximately 1 to 2 V, in this embodiment, a plurality of cells are connected in series so that a desired voltage can be obtained. Further, a desired current can be obtained by bundling a plurality of aggregates composed of a plurality of cells connected in series so as to obtain a desired voltage.

  Further, in the packaged storage battery 90, the alternating current supplied via the distribution board 14 is converted into a direct current having a voltage suitable for charging the storage battery 90, and the direct current discharged by the storage battery 90 is converted into the distribution board 14. Conversion means (not shown) such as a bidirectional inverter that can be converted into alternating current supplied to the home appliance 20 and the housing equipment 22 is provided.

  Furthermore, the storage battery 90 includes a charge / discharge control circuit (not shown) that controls charging / discharging of the storage battery 90, and is controlled by the HEMS 30 via the storage battery control interface 56 together with the above-described inverter.

  The storage battery control interface 56 has a function as a control interface, and also has a sensor function capable of measuring the current and power flowing between the distribution board 14 and the storage battery 90.

  In addition, a current sensor 52 is provided in a circuit that supplies power from the distribution board 14 to the home appliance 20 and the residential equipment 22. The current value and voltage value measured by the current sensor 52 can be transmitted to the HEMS 30 via the distribution board 14.

  The HEMS 30 supplies the power of the grid power 12, the photovoltaic power generation device 16, and the storage battery 90 to the building 10 by controlling the distribution board 14 and the storage battery 90 via the storage battery control interface 56, or the storage battery 90. The power for charging is controlled.

  Further, the HEMS 30 calculates the power consumption in the building 10 based on the current value measured by the current sensor 52 and the current value and voltage value measured by the storage battery control interface 56.

  Specifically, the amount of power consumed by the home appliance 20 and the residential equipment 22 is calculated by multiplying the current value measured by the current sensor 52 by a predetermined voltage value, for example, 100V.

  Further, the amount of power consumed by charging the storage battery 90 is calculated from the current value and voltage value of the power supplied from the distribution board 14 to the storage battery 90 in order to charge the storage battery 90 measured by the storage battery control interface 56.

  Next, the power consumption amount of the building 10 is calculated by summing the power consumption amount based on the measurement of the current sensor 52 and the power consumption amount based on the measurement of the storage battery control interface 56.

  The HEMS 30 is connected to the information center 80 via the network 60, and acquires from the information center 80 information on rate plans with different electricity charges for each time zone of the system power 12 and information on the unit price of the electricity charges of the system power 12.

  FIG. 2 is a diagram showing an outline of an example of an electricity bill plan. Fig. 2 shows that the electricity charge is low during the night time, the electricity charge is high during the daytime, and the transmission charge is equivalent to the middle of the night and daytime during the morning and evening hours. "Lights by time zone".

  As an example, the unit price of the electricity charge in each time zone is 10 yen / kWh at night, 32 yen / kWh at daytime, and 22 yen / kWh at morning and evening.

  In the present embodiment, it is assumed that the HEMS 30 can calculate the electricity charge based on the power consumption of the building 10 based on the power consumption of the building 10 and the unit price of the electricity charge.

  FIG. 3 is a block diagram showing a schematic configuration of the HEMS 30 which is the storage battery charge / discharge control device according to the present embodiment.

  As shown in FIG. 3, the HEMS 30 includes a CPU 36, a ROM 38, a RAM 40, and an input / output port 42. These include a bus 44 such as an address bus, a data bus, and a control bus. Are connected to each other.

  A display unit 46, an operation unit 48, and a memory 50 are connected to the input / output port 42 as various input / output devices. The display unit 46 and the operation unit 48 are integrally configured, and a touch panel provided on the display unit 46 can be applied to the operation unit 48.

  In the present embodiment, the scheduled charging time for charging the storage battery 90 by the operation of the operation unit 48 can be set in advance, and the HEMS 30 charges the storage battery 90 when the time set according to the time measuring function provided in the computer is reached. To do.

  The memory 50 stores a program for controlling power supplied to the building 10, a program for controlling charge / discharge of the storage battery 90, and the like.

  Further, the memory 50 stores various information for executing these programs.

  The HEMS 30 performs various types of control such as control of power supplied to the building 10 by developing a program stored in the memory 50 in the RAM 40 and executing it by the CPU 36.

  Further, the input / output port 42 is connected to the distribution board 14, the storage battery control interface 56, and the network interface 34 that can transmit and receive information to and from the information center 80. In the present embodiment, it is assumed that the HEMS 30 can acquire the measurement results of the current sensor 52 and the photovoltaic power generation current / voltage sensor 54 via the distribution board 14.

  FIG. 4 is a diagram illustrating an example of setting the scheduled charging time and the scheduled discharging time of the storage battery 90. In FIG. 4, the scheduled charging time and the scheduled discharging time are set to overlap in the time zone from 15:00 to 17:00.

  As shown in FIG. 4, when the setting of the scheduled charging time and the setting of the scheduled discharging time overlap, the HEMS 30 preferentially executes the subsequent setting instead of the previous setting.

  In a computer such as the HEMS 30, when a setting is added by operating the operation unit 48, a new line is provided in a predetermined setting file stored in the memory 50, and items related to the added setting are described. .

  Computers such as the HEMS 30 operate by reading each line of the setting file, but preferentially execute the items described in the subsequent lines over the items described in the previous lines of the setting file. To do.

  Therefore, if there is a contradiction in the description of the setting file between the previous line and the subsequent line, the items described in the subsequent line are preferentially executed. Instead, the subsequent setting is executed preferentially.

  Therefore, for example, when the scheduled discharge time is set first, the scheduled charge time set after that is prioritized. In the case of FIG. 4, the discharge of the storage battery 90 is stopped at 15:00, which is before the scheduled time for the end of the discharge, and thereafter, the charge is preferentially executed.

  In the present embodiment, when the setting of the scheduled charging time and the setting of the scheduled discharging time are overlapped as shown in FIG. 4, the user is notified that the settings are overlapping.

  FIG. 5 is a flowchart for determining the suitability of the setting of the scheduled charging time and the scheduled discharging time in the present embodiment.

  In step 500, a setting file in which a scheduled charging time and a scheduled discharging time of the storage battery 90 are described is read.

  In step 502, it is determined whether or not the scheduled charging time and the scheduled discharging time described in the setting file overlap.

  If the determination in step 502 is affirmative, it is determined in step 504 whether or not the scheduled charging time line described in the setting file is after the scheduled discharging time line.

  If the determination in step 504 is affirmative, a warning that the scheduled charging time and the scheduled discharging time overlap in step 506 and the setting of the scheduled charging time described in the line after the setting file are given priority. The message is displayed on the display unit 46, and the process ends.

  If the determination in step 504 is negative, a warning that the scheduled charging time and the scheduled discharging time are duplicated in step 508 and the setting of the scheduled discharging time described in the line after the setting file are given priority. The message is displayed on the display unit 46, and the process ends.

  The warning displayed in steps 506 and 508 may include a time zone in which the scheduled charging time and the scheduled discharging time overlap.

  If the determination in step 502 is negative, the scheduled charging time and the scheduled discharging time do not overlap, so that a warning or a message related to the setting of the scheduled charging time or the scheduled discharging time is displayed on the display unit 46. I don't need it.

  As described above, in the present embodiment, when the scheduled charging time and the scheduled discharging time of the storage battery 90 are set to be overlapped, which of the settings is overlapped and which setting is to be prioritized? Can be notified to the user.

  In the present embodiment, it is notified that the settings are duplicated, but the setting of the scheduled charging time and the scheduled discharging time of the setting file may be reset together with the notification. The setting may be reset at the same time as the notification, but the setting may be reset after the display related to the notification is performed for a predetermined time.

  The predetermined time may be, for example, about several minutes to 30 minutes, and after resetting the settings, the display unit 46 may display that the settings of the scheduled charging time and the scheduled discharging time have been reset.

  Various modes can be considered for resetting the setting of the scheduled charging time and the scheduled discharging time. For example, you may make it erase | eliminate the setting of the time slot | zone when the scheduled charging time and the scheduled discharging time overlap.

  Alternatively, only the time zone of the previous line that overlaps the time zone described in the line after the setting file may be deleted.

  Further, the setting of the scheduled charging time and the scheduled discharging time may be completely erased.

  In the present embodiment, whether or not the scheduled charging time and the scheduled discharging time overlap is determined in the HEMS 30, but may be performed in the information center 80.

  For example, the HEMS 30 transmits the set scheduled discharge time and scheduled charge time to the information center 80 via the network interface 34.

  The information center 80 determines whether or not there is an overlapping time zone between the received scheduled discharge time and the scheduled charge time, and transmits the result via the network. If there is an overlapping time zone between the scheduled discharge time and the scheduled charging time, the overlapped time zone is specified and information on the specified time zone is transmitted.

  When the HEMS 30 receives from the information center 80 the result of determining that there is an overlapped time zone between the scheduled discharge time and the scheduled charge time and information on the overlapped time zone, the HEMS 30 includes a warning including the display of the overlapped time zone. Is displayed on the display unit 46.

  The information center 80, when the hourly charge plan is applied to the power supply to the building 10, the charge plan applied to the power supply of the building 10 from the provider of the grid power 12 and the charge You may make it acquire the information which concerns on the unit price of the electricity bill in a plan.

  You may acquire from the electric power company of the information system electric power 12 which concerns on the rate plan applied to supply of the electric power of the building 10, and the unit price of the electric bill in the said rate plan, and may acquire from the HEMS30 of the building 10 .

  The information center 80 determines whether or not the scheduled discharge time received from the HEMS 30 is set to a time zone where the unit price of the electricity bill is low in the rate plan, or the scheduled charge time received from the HEMS 30 is a time in which the electricity rate is high in the rate plan It is determined whether or not the band is set.

  Creates a message that recommends setting the scheduled discharge time to a time zone where the unit price of electricity is high in the above rate plan when the scheduled discharge time is set in a time plan where the unit price of electricity is low To do. In addition, if the scheduled charging time is set to a time zone where the electricity rate is high in the above rate plan, a message recommending that the scheduled charging time be set to a time zone where the unit price of the electricity rate is low in the rate plan is displayed. create.

  Further, the information center 80 transmits the created message to the HEMS 30.

  When the HEMS 30 receives a message from the information center 80, the HEMS 30 displays a warning that the scheduled charging time and the scheduled discharging time including the message overlap.

  In the present embodiment, the information center 80 prohibits charging of the storage battery 90 when the power consumption of the building 10 measured by the HEMS 30 is equal to or greater than a predetermined threshold and the scheduled discharge time and the scheduled charge time overlap. Then, a control command for discharging the storage battery 90 may be transmitted.

  For example, the predetermined threshold value may be an amount of electric power corresponding to 85 to 95% of contract amperes of the building 10.

  The HEMS 30 prohibits charging of the storage battery 90 or discharges the storage battery 90 in a time zone in which the scheduled discharge time and the scheduled charge time overlap according to the received command.

  As described above, through the information center 80, it is possible to reduce the load on the HEMS 30 and to perform various controls in consideration of the power rate plan or the power consumption of the building.

  Moreover, in this Embodiment, it is also possible to suggest the setting of the scheduled charging time and the scheduled discharging time of the storage battery 90 that enables cost reduction when using solar power generation.

  For example, the HEMS 30 transmits the power generation amount of the solar power generation device 16 calculated from the current value and voltage value detected by the solar power generation current / voltage sensor 54 to the information center 80 in association with the time of power generation.

  Further, the HEMS 30 transmits the amount of power spent for charging the storage battery 90 to the information center.

  The information center 80 calculates the cost for the amount of power required to charge the storage battery 90 in the daytime and nighttime periods. As for the cost, in the daytime, it is assumed that all the power generated by the solar power generation device 16 is used for charging the storage battery 90, and the shortage is procured from the system power 12, so that the electricity charges for the daytime hours of the hourly lamps Calculated based on the unit price of.

  In the case of nighttime, the cost for charging the storage battery 90 is calculated based on the unit price of the nighttime electricity bill of the hourly lamp.

  As a result, it is determined which one of the daytime time zone in which the electric power generated by the solar power generation device 16 can be used and the nighttime time zone in which the unit price of the electricity bill is low is appropriate for the scheduled charging time of the storage battery 90. In order to improve the accuracy of the determination, the information center 80 accumulates the power generation amount of the solar power generation device 16 and the power amount spent for charging the storage battery 90 for several days to one week, and each of the accumulated power amounts. The above-described determination may be performed based on the daily average of each.

  Further, the information center 80 determines whether or not the scheduled charging time of the storage battery 90 transmitted from the HEMS 30 belongs to a time zone determined to be appropriate. If the scheduled charging time does not belong to the time zone or if the scheduled charging time does not overlap with the time zone, create a warning that the scheduled charging time is not appropriate and a message indicating the time zone suitable for the scheduled charging time And it transmits to HEMS30.

  The information center 80 also determines the scheduled discharge time. When the scheduled discharge time is set to a time zone in which the storage battery 90 can be charged at a low cost, a warning indicating that the scheduled discharge time is not appropriate and a message indicating the time zone suitable for the scheduled discharge time are created, and the HEMS 30 Send to.

  As described above, according to the present embodiment, it is possible to set the scheduled charging time that can reduce the cost required for charging the storage battery 90 in consideration of the power generation amount of the solar power generation device 16.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 6 is a schematic diagram of the storage battery 90 and the storage battery control device 92 according to the present embodiment. In addition, since this Embodiment is the same as that of the above-mentioned 1st Embodiment except the structure which concerns on a storage battery, the description is abbreviate | omitted about the structure same as 1st Embodiment.

  In the present embodiment, instead of the storage battery control interface 56 in the first embodiment, a storage battery control device 92 is provided in the storage battery housing 94.

  Also, storage battery modules 90A, 90B, and 90C are provided in the storage battery casing 94, and each storage battery module can be charged or discharged independently under the control of the storage battery control device 92.

  The storage battery control device 92 can control the charging and discharging of the storage battery modules 90A to 90C and can detect the voltages of the storage battery modules 90A to 90C. It is assumed that the HEMS 30 can calculate the storage amount of each of the storage battery modules 90A to 90C from the voltage value of each of the storage battery modules 90A to 90C detected by the storage battery control device 92.

  In order to supply the storage battery control device 92 to the distribution board 14, a power line to which power for charging each of the storage battery modules 90 </ b> A to 90 </ b> C is supplied from the distribution board 14 and power generated by the discharge of the storage battery modules 90 </ b> A to 90 </ b> C. The power line is connected.

  By separately providing a charging power line and a discharging power line, in this embodiment, it is possible to charge any of the other storage battery modules while discharging any of the storage battery modules 90A to 90C. And

  Further, the storage battery control device 92 is a conversion means (not shown) such as a bidirectional inverter that can convert alternating current supplied via the distribution board 14 into direct current having a voltage suitable for charging the storage battery modules 90A to 90C. Is provided.

  Conversion means such as a bidirectional inverter can also convert the direct current discharged by the storage battery modules 90 </ b> A to 90 </ b> C into alternating current supplied from the distribution board 14 to the home appliance 20 and the residential equipment 22.

  For each of the storage battery modules 90A to 90C, a rechargeable secondary battery such as a lead storage battery, a nickel metal hydride battery, or a lithium ion battery is used. Since one cell of these secondary batteries has an electromotive force of approximately 1 to 2 V, in this embodiment, a plurality of cells are connected in series so that a desired voltage can be obtained. Further, a desired current can be obtained by bundling a plurality of aggregates composed of a plurality of cells connected in series so as to obtain a desired voltage in parallel.

  In the present embodiment, three storage battery modules 90A to 90C are connected, but the number of storage battery modules is not particularly limited, and may be three or more and three or less.

  FIG. 7 is a flowchart of charging and discharging control of the storage battery in the present embodiment.

  In step 700, a setting file in which a scheduled charging time and a scheduled discharging time are described is read.

  In step 702, it is determined whether the scheduled charging time and the scheduled discharging time described in the setting file overlap.

  If the determination in step 702 is affirmative, in step 704, the storage amounts of the storage battery modules 90A to 90C are measured. In this Embodiment, the storage battery control apparatus can detect the voltage value of each storage battery module, and HEMS30 calculates the electrical storage amount of each storage battery module from the detected voltage value of each storage battery module.

  In step 706, the storage battery module with the maximum stored amount and the storage battery module with the minimum stored amount are specified.

  In step 708, the storage battery module with the maximum stored amount is discharged according to the scheduled discharge time described in the setting file, and the storage battery module with the minimum stored amount is charged according to the scheduled charge time described in the setting file. Exit.

  In the case of a negative determination in step 702, since the scheduled charging time and the scheduled discharging time do not overlap, in step 710, each storage battery module follows the scheduled charging time and the scheduled discharging time described in the setting file. Charged or discharged.

  As described above, in the present embodiment, even when the setting of the scheduled charging time and the scheduled discharging time is duplicated, among the plurality of storage battery modules, the storage battery having a large amount of storage is discharged and the storage battery having a small storage amount is charged. It becomes possible.

  In step 708, the display unit 46 may display that the storage battery module having the maximum stored amount is discharged according to the scheduled discharge time and the storage battery module having the minimum stored amount is charged according to the scheduled charge time.

DESCRIPTION OF SYMBOLS 10 Building 12 System electric power 14 Distribution board 16 Solar power generation device 20 Home appliance 22 Housing equipment 30 HEMS
34 Network interface 36 CPU
38 ROM
40 RAM
46 Display Unit 48 Operation Unit 50 Memory 52 Current Sensor 54 Photovoltaic Current Voltage Sensor 56 Storage Battery Control Interface 60 Network 80 Information Center 90 Storage Battery

Claims (3)

An input means capable of input for setting a scheduled discharge time for discharging the storage battery and a scheduled charge time for charging the storage battery;
Transmitting means for transmitting the estimated discharge time and the estimated charge time set via the input means;
Receiving the scheduled discharge time and the scheduled charge time transmitted by the transmitting means, determining whether or not there is a time zone where the scheduled discharge time and the scheduled charge time overlap, and transmitting the result of the determination, An information center that identifies the overlapped time zone and transmits information of the identified time zone when there is a duplicate time zone between the scheduled discharge time and the scheduled charge time;
Receiving means for receiving information from the information center;
When the reception means receives from the information center the result of determining that there is an overlapped time zone between the scheduled discharge time and the scheduled charge time and information on the overlapped time zone, the display of the overlapped time zone Display means for displaying warnings including:
Power consumption measuring means for measuring the power consumption of the building;
Charge / discharge control means for controlling charging or discharging the storage battery; and
With
The transmission means transmits the power consumption of the building measured by the power consumption measurement means to the information center,
The information center is configured such that the estimated discharge time and the estimated charge time are determined when the power consumption of the building is equal to or greater than a predetermined threshold and when the estimated discharge time and the estimated charge time overlap. Send a control command to prohibit charging of the storage battery in the overlapping time zone,
The charging / discharging control means prohibits charging of the storage battery in a time zone in which the scheduled discharging time and the scheduled charging time overlap according to a command received by the receiving means from the information center. . The information center, from a business that supplies power to the building, when a rate plan in which the unit price of the electricity rate changes according to the time zone is applied to supply power to the building provided with the storage battery. Information on the rate plan applied to the power supply of the building and the unit price of the electricity rate in the rate plan is acquired, and the received scheduled discharge time is the time when the unit price of the electricity rate is low in the rate plan It is determined whether or not the received scheduled charging time is set to a time zone in which the electricity plan is expensive in the rate plan, and the scheduled discharging time is set to the electricity rate in the rate plan. If the unit price is set to a low time zone, a message recommending that the scheduled discharge time be set to a time zone where the unit price of the electricity rate is high in the rate plan is created, and the charging is performed. Creates a message recommending that the scheduled charging time be set to a time zone where the unit price of the electricity rate is low in the rate plan when the fixed time is set to a time zone where the electricity rate is high in the rate plan And send the created message,
The storage battery charge / discharge control system according to claim 1 , wherein the display unit displays a warning including the message when the reception unit receives the message from the information center. The information center is configured such that the estimated discharge time and the estimated charge time are determined when the power consumption of the building is equal to or greater than a predetermined threshold and when the estimated discharge time and the estimated charge time overlap. Sending a control command for prohibiting charging of the storage battery in the overlapping time zone and discharging the storage battery,
The charging / discharging control unit prohibits charging of the storage battery in a time zone in which the scheduled discharge time and the scheduled charging time overlap according to the instruction received from the information center by the receiving unit and discharges the storage battery. The storage battery charge / discharge control system according to claim 1 or 2 .

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