JP5719539B2 - Power supply system and power supply method - Google Patents

Description

  The present invention relates to, for example, a power supply system and a power supply method capable of supplying power from a battery of an electric vehicle to an electric facility in a customer's building.

  2. Description of the Related Art Conventionally, a technique for supplying electric power from a battery of an electric vehicle to electric equipment in a dwelling unit has been proposed (for example, see Patent Document 1). In such a power supply system, the battery of an electric vehicle is charged at night using low-cost electricity at low cost, and power is supplied from this battery to the electrical equipment in the dwelling unit at the peak of the daytime power demand. Yes.

JP 2007-282383 A

  However, in the above prior art, when an electric vehicle is used, there are cases where the remaining capacity of the battery is insufficient, or the electrical equipment in the dwelling unit may not be smoothly accommodated in a necessary time zone.

  The present invention solves the above-described problems, and is capable of smoothly accommodating power from the battery of the electric vehicle to the electric facility of the customer while always ensuring a sufficient remaining capacity of the battery of the electric vehicle. And it aims at providing the electric power supply method.

In order to solve the above-mentioned problems, the invention of claim 1 is an electric power supply system capable of supplying electric power from a battery of an electric vehicle to an electric facility of a consumer via charging / discharging means, the remaining capacity of the battery Based on the history information or the schedule information, and the lower limit value of the remaining capacity based on the history information or the schedule information. Based on the lower limit setting means to be set, and the history information or the schedule information and the average annual mileage, depending on whether the purpose includes commuting or shopping , or is a case of outing including leisure , An upper limit set value acquisition means for setting an upper limit set value of the remaining capacity, a current remaining capacity acquired by the remaining capacity acquisition means, and an upper limit set by the upper limit set value acquisition means Charging for calculating a charging start time based on a charging time calculating means for calculating a required charging time based on a constant value, a charging time calculated by the charging time calculating means, and a preset charging end time Start time calculation means, power supply availability determination means for determining whether power can be supplied from the battery to the electrical equipment based on the remaining capacity and the lower limit value; and charge start time calculated by the charge start time calculation means And charging / discharging control means for controlling the charging / discharging means based on the determination result of whether or not the power supply is determined by the power supply availability determination means.

In the invention of claim 1, the remaining capacity of the battery is acquired, the lower limit value of the remaining capacity is set based on the history information or schedule information, and the purpose is based on the history information or schedule information and the average annual travel distance. Depending on whether you are commuting or purchasing, or if you are going out for leisure, set the upper limit setting for the remaining capacity, and the required charging time based on the remaining capacity, the lower limit , and the upper limit. The charging start time is calculated based on the charging time and the preset charging end time , whether power is supplied from the battery to the electrical equipment is determined, and charging is performed based on the power supply determination result. Control the discharging means.

  A second aspect of the present invention is the power supply system according to the first aspect, wherein the battery is charged via the charging / discharging means during a midnight power time period, and the charging is performed during a non-midnight power time period. Electricity is supplied from the battery to the electrical equipment via a discharging means.

  Invention of Claim 3 is the electric power supply system of Claim 1 or 2, Comprising: The monitoring means which monitors the electric power usage-amount of the said electric equipment, The said electric power usage-amount or its increase rate, or the said electric equipment It is characterized by comprising power supply necessity determination means for determining whether or not power supply from the battery to the electrical equipment is necessary based on the history information of use or the schedule information.

The invention of claim 4 is a power supply method for supplying electric power from a battery of an electric vehicle to a customer's electric equipment through charging / discharging means, the remaining capacity acquiring step for acquiring the remaining capacity of the battery, An information storage step for storing history information and schedule information on the use of electric equipment and the electric vehicle in information storage means, and a lower limit value setting step for setting a lower limit value of the remaining capacity based on the history information or the schedule information And the upper limit of the remaining capacity depending on whether the purpose includes commuting or purchasing or outing including leisure based on the history information or the schedule information and the average annual travel distance The upper limit set value acquisition step for setting the set value, the current remaining capacity acquired in the remaining capacity acquisition step, and the upper limit set value acquisition step A charge start time is calculated based on a charge time calculation step for calculating a required charge time based on the limit set value, a charge time calculated in the charge time calculation step, and a preset charge end time. A charge start time calculating step, a power supply permission determination step for determining whether power can be supplied from the battery to the electrical equipment based on the remaining capacity and the lower limit value, and a charge start calculated by the charge start time calculation step And a charge / discharge control step for controlling the charge / discharge step based on the time and the determination result of whether or not the power supply is determined in the power supply availability determination step.

According to the invention of claim 1, the lower limit of the remaining capacity is set based on the history information or schedule information, and the purpose is commuting, purchase, etc. based on the history information or schedule information and the average annual mileage. Depending on whether it is a case or when going out at leisure, etc., the upper limit setting value of the remaining capacity is set , the required charging time is calculated based on the remaining capacity, the lower limit value , and the upper limit value , and the charging time And the charging end time based on the preset charging end time , determine whether power can be supplied from the battery to the electrical equipment, and control the charging / discharging means. Electric power can be smoothly accommodated from the battery of the electric vehicle to the electric facility of the customer while ensuring a sufficient remaining capacity.

  According to the invention of claim 2, the battery can be charged in the late-night power hours when the electricity rate is low, and the power can be supplied from the battery to the electric equipment at the peak of the daytime power demand. And can save on electricity bills.

  According to the invention of claim 3, since it is determined whether or not the power supply from the battery to the electrical equipment is necessary based on the power consumption or the rate of increase thereof, or the history information or schedule information of the usage of the electrical equipment, the demand from the battery Electric power can be more smoothly accommodated in the electrical equipment of the house.

According to the invention of claim 4, the lower limit value of the remaining capacity is set based on the history information or schedule information, and the purpose is commuting or purchase based on the history information or schedule information and the average annual mileage. Depending on whether it is a case or when going out at leisure, etc., the upper limit setting value of the remaining capacity is set , the required charging time is calculated based on the remaining capacity, the lower limit value , and the upper limit value , and the charging time And the charging end time based on the preset charging end time , determine whether power can be supplied from the battery to the electrical equipment, and control the charging / discharging means. Electric power can be smoothly accommodated from the battery of the electric vehicle to the electric facility of the customer while ensuring a sufficient remaining capacity.

It is explanatory drawing for demonstrating the structure of the electric power supply system by one Embodiment of this invention. It is explanatory drawing for demonstrating the structure of the charging / discharging part of the same electric power supply system, and the principal part of an electric vehicle. It is a block diagram which shows the structure of the controller of the charger / discharger of the same electric power supply system. It is a block diagram which shows the structure of the memory | storage part of the controller. It is explanatory drawing for demonstrating the structure of the display part of the same controller, and an operation part. It is a processing procedure figure for demonstrating operation | movement of the controller. It is a processing procedure figure for demonstrating operation | movement of the controller. It is a processing procedure figure for demonstrating operation | movement of the controller. It is a processing procedure figure for demonstrating operation | movement of the controller.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory diagram for explaining a configuration of a power supply system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining a configuration of a charge / discharge unit of the power supply system and a main part of an electric vehicle. FIG. 3 is a block diagram showing the configuration of the controller of the charger / discharger of the power supply system, FIG. 4 is a block diagram showing the configuration of the storage unit of the controller, and FIG. FIG. 6 to FIG. 9 are process procedure diagrams for explaining the operation of the controller.

  As shown in FIG. 1, a power supply system 1 is arranged in a consumer A, for example, an all-electric household A, a charger / discharger 2 connected to a distribution board 3, and a battery 4 installed in an electric vehicle B. Is included. Other electrical equipment 5, 5,... Such as an electric water heater and an air conditioner are also connected to the distribution board 3. The charger / discharger 2 includes a charging / discharging unit 7 and a controller 8.

  In the electric vehicle B, as shown in FIG. 2, a battery controller 31 that controls charging / discharging of the battery 4 is arranged. The battery controller 31 includes a remaining capacity detection unit that detects the remaining capacity of the battery 4, and can communicate with the communication unit 21 of the controller 8 via the communication path 33. A battery cable 32 is connected to the battery 4, and a charge / discharge port 29 is provided at the tip of the battery cable 32. When the charge / discharge paddle 14 is inserted into the charge / discharge port 29, power is exchanged with the charge / discharge unit 7. As the battery 4, a lead storage battery, a nickel metal hydride storage battery, a lithium ion storage battery, or the like is used. The electric vehicle B may be a hybrid vehicle or the like in addition to a storage battery or a fuel cell that uses only a motor as a power source. The electric vehicle B is also equipped with an inverter, a transmission, a differential device, and the like.

  As shown in FIG. 2, the charging / discharging unit 7 includes an input opening / closing unit 11 connected to the distribution board 3, an AC / DC conversion unit 12, a DC / AC conversion unit 13, a charge / discharge paddle 14, 1 switch 15 and second switch 16 are provided. The AC / DC converter 12 converts alternating current into direct current and adjusts the voltage (steps up or down). The DC / AC conversion unit 13 converts direct current into alternating current and adjusts the voltage.

  The charge / discharge paddle 14 is an electromagnetic induction type or contact type terminal (in the case of a contact type, also referred to as “charge / discharge connector”), and can be inserted into the charge / discharge port 29 of the electric vehicle B. The first switch 15 connects the input terminal 12 a of the AC / DC conversion unit 12 or the output terminal 13 a of the DC / AC conversion unit 13 to the input opening / closing unit 11. The second switch 16 connects the output terminal 12 b of the AC / DC converter 12 or the input terminal 13 b of the DC / AC converter 13 to the charge / discharge paddle 14. The first switch 15 and the second switch 16 are controlled by the controller 8.

  In a state where the input switch 11 is on, the first switch 15 is connected to the input terminal 12a of the AC / DC converter 12, and the second switch 16 is connected to the output terminal 12b of the AC / DC converter 12. The current supplied from the distribution board 3 side is converted into direct current by the AC / DC converter 12, and the electric power is supplied to the battery 4 of the electric vehicle B via the charge / discharge paddle 14 and the charge / discharge port 29. 4 is charged.

  In addition, the first switch 15 is connected to the output terminal 13a of the DC / AC converter 13 and the second switch 16 is connected to the input terminal 13b of the DC / AC converter 13 with the input opening / closing part 11 turned on. In the state, the current due to the discharge of the battery 4 is input to the DC / AC conversion unit 13 through the charge / discharge paddle 14 and the charge / discharge port 29 and is converted into an alternating current in the DC / AC conversion unit 13, and the electric power is It is possible to supply the equipment 5, 5,.

  As shown in FIG. 3, the controller 8 includes a control unit 18 that controls each component, a storage unit 19 that stores various control programs and data, a battery controller 31 via a charge / discharge paddle 14 and a charge / discharge port 29. A communication unit 21 that is capable of communicating with, for example, a display unit 22 and an operation unit 23 that constitute a touch panel display device, a timer unit 24, and a power supply unit 25 that generates driving power to be supplied to each component. ing. Note that a remote control terminal having a display unit and an operation unit may be connected to the controller 8 via a remote control unit. In this case, the display unit 22 and the operation unit 23 of the controller 8 may be eliminated. If a remote control terminal is provided, it shall be installed indoors.

  The control unit 18 includes a CPU (Central Processing Unit) and the like, and controls each component according to a predetermined control program stored in the storage unit 19. In the controller 8, for example, a mode setting process, a mode determination process, a leveling process, a charging process, a power supply process, a set value management process, a display / operation control process, and the like are executed according to a control program stored in the storage unit 19. Is done.

  The controller 8 is a mode setting process that receives an input from the operation unit 23, a leveling mode for executing a leveling process for performing load leveling, a charging mode for executing a charging process, or a power feeding mode for executing a power feeding process. Set. In this embodiment, when the mode setting operation is not performed, the controller 8 waits for the mode setting, but a standby mode may be provided.

  When the mode is set in the mode determination process, the controller 8 determines which operation mode is currently selected from the leveling mode, the charge priority mode, and the power supply priority mode.

  In the leveling process, the controller 8 determines whether or not it is currently in the midnight power time zone (23:00 to 8:00 the next day), and in the case of the midnight power time zone (for example, when it is 23:00), the charge priority processing In the non-midnight power time zone (daytime power time zone), power feeding priority processing is executed.

  The charge priority process in the leveling mode includes a remaining capacity acquisition process, an upper limit set value acquisition process, a charge time calculation process, a charge start time calculation process, a charge start determination process, and a charge end determination process. . The controller 8 acquires the current remaining capacity of the battery 4 from the battery controller 31 in the remaining capacity acquisition process.

  The controller 8 acquires the upper limit setting value of the remaining capacity of the battery 4 from the storage unit 19 in the upper limit setting value acquisition process. If the average annual mileage is 10,000 km, it will be 27 km per day. If it is possible to travel 160 km with 100% charge (for example, 16 kWh), it is considered that about 3 kWh per day is sufficient. Therefore, in the case of exclusive use for an electric vehicle, if commuting or purchase is used for the main purpose, it is estimated that this level is sufficient even if it is not charged 100% every day. In this case, if it is 3kWh charge at 200V, it will take about 2 to 3 hours.

  However, it is considered that 100% charging is required once every few days in preparation for going out at leisure. In this case, a charging time of about 7 hours at 200 V is required. On the other hand, for example, when charged 100% every day, about 5 to 7 kWh can be accommodated in the electrical equipment 5 in the dwelling unit. Thus, the upper limit set value is set to an optimum value at that time based on the history information and schedule information of the use of the electric equipment and the electric vehicle. The upper limit set value may be fixed to a predetermined value (for example, 80%) that limits the discharge.

  The controller 8 calculates a necessary charging time based on the current remaining capacity and the upper limit set value in the charging time calculation process. In the charging start time calculation process, the controller 8 calculates the charging start time based on the charging time and a preset end time (for example, 8:00 the next morning). The controller 8 determines whether or not the current time is the calculated start time in the charging start determination process. The controller 8 determines whether or not the current time has reached a preset end time (for example, 8:00) in the charging end determination process.

  The power supply priority process in the leveling mode includes a power supply necessity determination process, a remaining capacity acquisition process, a lower limit set value acquisition process, a power supply start determination process, and a power supply end determination process.

  The controller 8 determines whether or not the power supply from the battery 4 to each electrical facility should be started in the power supply necessity determination process. The controller 8 monitors the power usage amount and the total power usage amount of each electrical equipment 5 in the power supply necessity determination process. When the power usage amount reaches a predetermined value, or the increase rate is a predetermined value. May be determined as needing power supply from the battery 4.

  Further, the controller 8 may determine that the power supply is necessary when the predetermined time comes based on the history information or the schedule information. Here, for example, when the operation schedule of the electrical equipment 5 to be accommodated is determined, this operation schedule may be prioritized and followed. Further, the controller 8 may simply determine that power supply is required when a predetermined electrical facility 5 is turned on.

  The controller 8 acquires the current remaining capacity of the battery 4 from the battery controller 31 in the remaining capacity acquisition process. The controller 8 acquires the lower limit set value of the remaining capacity of the battery 4 from the storage unit 19 in the lower limit set value acquisition process. In the power supply start determination process, the controller 8 determines whether or not the current remaining capacity of the battery 4 exceeds the lower limit set value of the remaining capacity. If the remaining capacity exceeds the lower limit set value, the power supply can be started. Is determined. For example, a switch (not shown) may be disposed in front of the distribution board 3, and the switch may be turned on / off under the control of the controller 8. In the power supply end determination process, the controller 8 determines whether or not the current remaining capacity of the battery 4 is equal to or less than the lower limit set value of the remaining capacity, and determines that power supply should be ended when the remaining capacity is equal to or lower than the lower limit set value. .

  In the charging process, the controller 8 starts charging the battery 4 when there is a charging start operation (for example, substantially simultaneously with the mode setting operation), and ends charging when there is a charging end operation. By this process, when there is an unscheduled use, the shortage can be replenished. Note that the controller 8 may perform the charging end determination based on the remaining capacity and the upper limit set value. In this charging process, the controller 8 may execute the same process as the charge priority process in the leveling mode as the standard charge mode process, or perform the standard charge mode process and the process by the start (end) operation. It may be selectable.

  In the power supply process, the controller 8 starts power supply to, for example, a predetermined electrical facility 5 when there is a power supply start operation (for example, substantially simultaneously with the mode setting operation), and ends power supply when there is a power supply end operation. . Note that the controller 8 may perform the power supply end determination based on the remaining capacity and the lower limit set value. In this power supply process, the controller 8 may execute a standard power supply mode process similar to the power supply priority process in the leveling mode, or select the standard power supply mode process and a process by the start (end) operation. It may be possible.

  The controller 8 sets the upper limit setting value and the lower limit setting value of the remaining capacity based on the history information and schedule information of the use of each electric equipment 5 and electric vehicle B stored in the storage areas 27a and 27b in the setting value management process. It is set and stored in the storage area 27c. The upper limit set value and the lower limit set value are updated, and the latest set value at that time is used in the upper limit set value acquisition process or the like.

  For example, the controller 8 sets the lower limit setting value of the remaining capacity from 10:00 to 17:00 to the average weekly usage amount of electric vehicle B traveling × 150%, and from 17:00 to 23:00, the weekly average usage Set amount x 130%. Thereby, surplus electric power is accommodated with respect to the electric equipment 5 required in a required time slot | zone. The weekly average usage is constantly updated. In addition, for example, the lower limit set value information may be set to 20%, for example, so as not to cause over-discharge in consideration of extending the life of the battery 4.

  The controller 8 displays the corresponding information in the current time display area 22a, the operation mode display area 22b, and the information display area 22c of the display unit 22 and configures the operation unit 23 in the display / operation control process. Menu key 23a, operation mode setting key 23b, charging time confirmation key 23c, and integrated charge amount display key 23d are displayed.

  The storage unit 19 includes a ROM, a RAM, an FD (flexible disk), an HD (hard disk), an FDD on which a CD-ROM is mounted, an HDD, a CD-ROM driver, and the like. As shown in FIG. 4, the storage unit 19 includes a program storage unit 26 that stores various programs and an information storage unit 27 that stores various types of information such as setting information.

  The information storage unit 27 of the storage unit 19 includes a storage area 27a that stores history information, an area 27b that stores schedule information, and a storage area 27c that stores setting value information. The history information includes a history of charging and discharging of the battery 4, a travel history of the electric vehicle B, a history of power consumption (for example, including a weekly average usage), a power usage and a usage time for each electrical equipment 5. Contains the history of

  The schedule information includes a charging / discharging schedule of the battery 4, a traveling schedule of the electric vehicle B (for example, a day of the week when the user does not go out), a usage schedule of each electric equipment 5 (a power usage amount for each time zone), and the like. Yes. The charging / discharging schedule of the battery 4 may be one that takes into account the longer life of the battery 4. Further, the schedule information may be weekly or monthly.

  The set value information includes upper limit set value information and lower limit set value information of the remaining capacity at that time set in the set value management process. The controller 8 may be set in advance for each time zone, stored in the storage unit 19, and selected according to the current time. The lower limit set value information may be set to 20%, for example, so as not to cause overdischarge in consideration of extending the life of the battery 4. Note that the set value may be set manually.

  As shown in FIG. 5, the display unit 22 includes a current time display area 22a, an operation mode display area 22b, various information display areas 22c, and a pilot lamp 22d. The operation unit 23 includes a menu key 23a, an operation mode setting key 23b, a charging time confirmation key 23c, and an integrated charge amount display key 23d.

The information displayed in the various information display area 22c includes daily charge amount, monthly charge amount, monthly power consumption amount and electricity charge (each electric equipment, battery charge, and total), CO of the charged electric energy amount. ₂ conversion value, gasoline fee corresponding to the electricity bill for charging, charging display, remaining charge display, etc. are included.

  The daily charge amount, the monthly charge amount, the monthly power consumption amount and the electricity charge are displayed in a graph. Knowing the amount of charge per day leads to eco-driving when traveling on the same route every day. In addition, by knowing the monthly power consumption and electricity charges, the electricity charges for only electric vehicles can be found. In addition, knowing the cost of gasoline corresponding to the electricity bill can provide a sense of security and a sense of convincing that you have switched to an electric vehicle.

  A display item can be selected by operating the menu key 23a. The pilot lamp 22d has, for example, three color (RGB) LEDs, and performs green display during standby, yellow display during charging, and red display during power supply.

  Next, the operation of the power supply system 1 will be described with reference to FIGS. First, in the mode setting process, the controller 8 executes a leveling mode for executing a leveling process for performing load leveling, a charging mode for executing a charging process, or a power feeding process by an input from the operation unit 23. Set the power supply mode.

  Next, the controller 8 determines whether or not there is a mode setting (step SA11 (FIG. 6)). If the mode setting is present, the controller 8 proceeds to step SA12, determines whether or not the operation mode is the leveling mode, and waits otherwise. If the controller 8 is in the leveling mode, the process proceeds to step SA13, and otherwise, the process proceeds to step SA14.

  In step SA13, the controller 8 executes leveling processing and proceeds to step SA17. In step SA14, the controller 8 determines whether or not the operation mode is the charging mode. If the controller 8 is in the charging mode, the process proceeds to step SA15, and otherwise the process proceeds to step SA16. In step SA15, the controller 8 executes a charging process and proceeds to step SA17.

  In step SA16, the controller 8 executes a power supply process and proceeds to step SA17. In step SA17, the controller 8 determines whether or not an end operation has been performed. If there has been an end operation, the controller 8 ends the processing, and otherwise returns to step SA11.

  Next, the leveling process will be described. The controller 8 currently determines whether or not it is a midnight power time zone (23:00 to 8:00 the next day) (step SB11 (FIG. 7)), and in the case of a midnight power time zone (for example, when it is 23:00), It progresses to step SB12, a charge priority process is performed, and when it is a non-midnight power time zone (daytime power time zone), it progresses to step SB13 and performs a power feeding priority process.

  Next, the charge priority process will be described. The controller 8 starts the timer operation (step SC11 (FIG. 8)), and acquires the current remaining capacity of the battery 4 from the battery controller 31 in step SC12. Next, the controller 8 acquires the upper limit set value of the remaining capacity of the battery 4 from the storage unit 19.

  Next, the controller 8 calculates a required charging time based on the current remaining capacity and the upper limit set value in the charging time calculation process (step SC13). Next, the controller 8 calculates the charging start time based on the charging time and a preset end time (for example, 8:00 the next morning) in the charging start time calculation process.

  Next, in Step SC14, the controller 8 determines whether or not the calculated start time has been reached. If the start time has been reached, the controller 8 proceeds to Step SC15, starts charging, and stands by otherwise. In step SC16, the controller 8 determines whether or not a preset end time (for example, 8:00) has been reached. If the end time has been reached, the controller 8 proceeds to step SC17 to end charging, and otherwise. Wait.

  Next, power supply priority processing will be described. In the power supply necessity determination process, the controller 8 determines whether or not power supply from the battery 4 to each electrical facility 5 should be started (step SD11 (FIG. 9)). If it is determined that power supply needs to be started, the process proceeds to step SD12. If not, return to the main routine.

  The controller 8 obtains the current remaining capacity of the battery 4 from the battery controller 31 in step SD12. In addition, the controller 8 acquires the lower limit setting value of the remaining capacity of the battery 4 from the storage unit 19. Next, the controller 8 determines whether or not the current remaining capacity of the battery 4 exceeds the lower limit set value of the remaining capacity. If the remaining capacity exceeds the lower limit set value, the controller 8 proceeds to step SD14 to supply power. Otherwise, return to the main routine. The controller 8 acquires the current remaining capacity of the battery 4 from the battery controller 31 in step SD15. In step SD16, the controller 8 determines whether or not the current remaining capacity of the battery 4 is less than or equal to the lower limit set value of the remaining capacity. If the remaining capacity is less than or equal to the lower limit set value, the controller 8 proceeds to step SD17 and ends the power supply. Otherwise, wait.

  The controller 8 starts charging the battery 4 when there is a charging start operation (for example, substantially simultaneously with the mode setting operation) in the charging process, and ends charging when there is a charging end operation. Further, the controller 8 starts power supply to a predetermined electrical facility 5 when there is a power supply start operation (for example, substantially simultaneously with the mode setting operation) in the power supply process. finish.

  Thus, according to the configuration of this embodiment, the controller 8 charges the battery 4 in the late-night power hours when the electricity rate is low, and the electrical equipment in the dwelling unit A from the battery 4 during the daytime power demand peak. Since electric power can be supplied to 5, daytime demand can be increased, and electricity charges can be saved. In addition, for the electric power company, the equipment increase can be suppressed.

  In addition, the controller 8 is able to smoothly accommodate power from the battery 4 to the electrical equipment 5 required at a required time by always setting the lower limit set value information of the remaining capacity optimally at all times. A sufficient remaining capacity can be secured. Moreover, the controller 8 monitors the power usage amount of each electric equipment 5 and the total power usage amount, and when the power usage amount reaches a predetermined value or when the increase rate reaches a predetermined value. Or, based on the history information or schedule information, it is possible to more smoothly accommodate the electric power from the battery 4 to the electrical equipment 5 by determining that the power supply is necessary when the predetermined time comes.

  When a remote control terminal is provided, it can be prevented from being charged by an outsider by installing it in a room, and various information can be viewed indoors.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the gist of the present invention. Is included in the present invention. For example, in the above-described embodiment, the controller corresponds to the mode setting process, the mode determination process, the leveling process, the charging process, the power supply process, the set value management process, the display / operation control process, and the like in the controller 8. Although the case of performing by executing the control program has been described, part or all may be performed using dedicated hardware, and the other part may be processed by executing the corresponding program. In addition, each CPU may execute, or for example, a single CPU may execute.

  Further, the general distribution board and the midnight power distribution board may be separately installed. In this case, a time switch may be arranged before the midnight power distribution board. A storage battery may be installed in the house A. Moreover, a 200V outlet is arranged from the distribution board 3 through an indoor cord, and a plug of a charging cord is inserted into the 200V outlet so that electric power is supplied to the battery of the electric vehicle through a charger having a rectifying function and a boosting function. You may make it supply. Moreover, when using midnight power for an electric water heater, it can use together similarly. Further, for example, the power supply priority mode may be switched during the charge priority mode. Further, by controlling (shifting) the charging time with a plurality of dwelling units A, an increase in demand at night can be suppressed. Further, the battery controller 31 and the communication unit 21 may communicate wirelessly.

  The present invention can also be applied when using a plurality of chargers / dischargers. Moreover, as a dwelling unit, the present invention can be applied to an apartment house such as a condominium in addition to a detached house.

DESCRIPTION OF SYMBOLS 1 Electric power supply system 2 Charger / discharger 4 Battery 5 Electric equipment 7 Charge / discharge part (charge / discharge means)
8 Controller 18 Control unit (remaining capacity acquisition means, lower limit setting means, power supply availability determination means, charge / discharge control means, monitoring means, power supply necessity determination means)
19 Storage unit (information storage means)
B Electric car

Claims (4)

An electric power supply system capable of supplying electric power from a battery of an electric vehicle to a customer's electric equipment through charging / discharging means,
A remaining capacity acquisition means for acquiring the remaining capacity of the battery;
Information storage means for storing history information and schedule information of the use of the electrical equipment and the electric vehicle;
Based on the history information or the schedule information, lower limit setting means for setting a lower limit value of the remaining capacity,
Based on the history information or the schedule information and the average annual mileage, the upper limit setting value of the remaining capacity depending on whether the purpose includes commuting or shopping or outing including leisure Upper limit set value acquisition means for setting
Charging time calculation means for calculating a required charging time based on the current remaining capacity acquired by the remaining capacity acquisition means and the upper limit setting value set by the upper limit setting value acquisition means;
Charging start time calculating means for calculating a charging start time based on the charging time calculated by the charging time calculating means and a preset charging end time;
Based on the remaining capacity and the lower limit, power supply availability determination means for determining whether power can be supplied from the battery to the electrical equipment;
Charge / discharge control means for controlling the charge / discharge means based on the charge start time calculated by the charge start time calculating means and the power supply availability determination result determined by the power supply availability determination means;
A power supply system comprising:   The battery is charged via the charging / discharging means during midnight power hours, and power is supplied from the battery to the electrical equipment via the charging / discharging means during non-midnight power hours. The power supply system according to claim 1.   Power supply from the battery to the electrical equipment based on the monitoring means for monitoring the power usage of the electrical equipment, the power usage or the rate of increase thereof, or the history information or the schedule information of the usage of the electrical equipment The power supply system according to claim 1, further comprising a power supply necessity determination unit that determines whether or not the power supply is necessary. An electric power supply method for supplying electric power from a battery of an electric vehicle to a customer's electric equipment through charging / discharging means,
A remaining capacity acquisition step of acquiring the remaining capacity of the battery;
Information storage step of storing history information and schedule information on the use of the electric equipment and the electric vehicle in information storage means;
A lower limit setting step for setting a lower limit value of the remaining capacity based on the history information or the schedule information;
Based on the history information or the schedule information and the average annual mileage, the upper limit setting value of the remaining capacity depending on whether the purpose includes commuting or shopping or outing including leisure An upper limit set value acquisition step for setting
A charging time calculating step of calculating a required charging time based on the current remaining capacity acquired in the remaining capacity acquiring step and the upper limit setting value set in the upper limit setting value acquiring step;
A charge start time calculating step for calculating a charge start time based on the charge time calculated in the charge time calculating step and a preset charge end time;
Based on the remaining capacity and the lower limit value, a power supply availability determination step for determining whether power can be supplied from the battery to the electrical equipment;
A charge / discharge control step for controlling the charge / discharge step based on the charge start time calculated by the charge start time calculating step and the power supply availability determination result determined by the power supply availability determination step;
A power supply method comprising:

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