JP5515083B2 - Power distribution apparatus, power distribution program, power distribution system, and power distribution method - Google Patents

Description

  The present invention relates to a power distribution device, a power distribution program, a power distribution system, and a power distribution method using a commercial power source and a storage battery.

  As plug-in hybrid vehicles and electric vehicles equipped with storage batteries become widespread, opportunities for charging storage batteries in companies and homes that own them will increase in the future. Along with this, companies that use a large number of electric vehicles, for example, increase the number of power supply facilities to match the usage peak so that the capacity of the power supply facilities will not be exceeded even if charging starts all at the same time in the evening. It becomes necessary to do. On the other hand, a system has also been proposed in which a storage battery is used as an external power supply device that can be fed by a separate system from a commercial power supply, and power from the storage battery is supplied to a building in an emergency (see, for example, Patent Document 1).

  Therefore, avoiding concentration of load on the power supply side of the power system and power supply equipment, etc. by finding the optimal time zone for charging the storage battery from the information on the remaining charge of the storage battery and the recommended charging time zone It has been proposed to improve the utilization rate of power equipment (see, for example, Patent Document 2).

JP-A-11-178234 JP 2008-067418 A

  However, in the above conventional method, there is a case where the remaining capacity of the storage battery after being fed from the storage battery to reduce the power consumption of the commercial power source is less than the capacity originally required for use as an electric vehicle. is there. Moreover, such a storage battery may be mounted on a home robot in the future. At this time, in order to live with an electric device such as an electric car or a home robot, the current upper limit current can be changed to 40A or 60A in order to charge the storage battery used for these. 200V power supply must be newly installed in the home. Then, the maximum power consumption at home rises, and it becomes necessary to increase the contract capacity with the power company. However, in homes where home robots will be indispensable, such as elderly homes, it is impossible to bear the increased costs due to low income, and use home robots that will support life It can be a situation where you can't.

  The present invention has been made in view of the above circumstances, and can perform charging capable of securing a necessary amount of charge even after power supply from a storage battery mounted on an electric device, and can be used for a commercial power supply. It is an object of the present invention to provide a power distribution device, a power distribution program, a power distribution system, and a power distribution method that can suppress an increase in load and maintain power supply to home appliances.

The present invention employs the following means in order to solve the above problems.
The power distribution apparatus according to the present invention is a predicted power of the home appliance calculated based on the power consumption external factor information of the power storage unit of the home appliance and the electric device supplied with power from a commercial power source and the power consumption of the home appliance Based on the consumption amount, the power consumption external factor information, the behavior information of the electric device, and the predicted discharge amount of the power storage unit calculated based on the battery capacity information of the power storage unit, the predicted discharge amount of the power storage unit And a charge / discharge calculation unit that calculates charge / discharge information including a charge / discharge amount and a charge / discharge timing of the power storage unit so that a remaining capacity of the power storage unit exceeds a total of predicted power consumption of a part of the home appliances And a charge / discharge control unit that charges and discharges the power storage unit based on the charge / discharge information.

  This invention supplies power to the power storage unit of the electric device from a power storage unit of the electric device by energizing the power storage unit of the electric device when the power consumption of the electric home appliance supplied with power from the commercial power supply is insufficient. To maintain the state of use of home appliances.

  Moreover, the power distribution device according to the present invention is the power distribution device, wherein the charge / discharge operation unit monitors a power consumption of the home appliance, the power consumption external factor information, and the power consumption external factor information Based on power consumption, a power consumption prediction unit that calculates a predicted power consumption of the home appliance, a behavior detection unit that detects behavior information of the electric device, the power consumption external factor information, the behavior information, and the A discharge amount prediction unit that calculates a predicted discharge amount of the power storage unit based on battery capacity information; a charge / discharge information calculation unit that calculates charge / discharge information of the power storage unit from the predicted power consumption amount and the predicted discharge amount; It is characterized by having.

  This invention is based on predicted power consumption based on power consumption external factor information and actual power consumption of home appliances, power consumption external factor information, behavior information of the electric device, and battery capacity information of the power storage unit. Since the estimated discharge amount is calculated and the charge / discharge information of the power storage unit is calculated, more suitable power distribution can be performed.

  A power distribution program according to the present invention causes a computer to function as the power distribution device according to the present invention.

  In addition, the power distribution system according to the present invention is for charging that energizes or cuts off the commercial power source and the power storage unit when the power distribution device according to the present invention, the commercial power source and the power storage unit are connected. A first terminal unit to which a first household electrical appliance having a relatively low importance among the household electrical appliances is connected; the first terminal unit and the commercial power supply; and the power storage unit. A supply source switching unit that allows energization with either the commercial power source or the power storage unit, and a second household electrical appliance that is connected to the commercial power source and has a relatively high importance among the household electrical appliances Connected to the supply source switching unit, and when connected to the power storage unit, the power supply terminal unit for energizing or shutting off the power storage unit and the supply source switching unit, A storage capacity measuring unit for detecting battery capacity information of the storage unit; The power distribution device calculates each switching timing of the charging terminal unit, the supply source switching unit, and the power feeding terminal unit based on the predicted power consumption amount and the predicted discharge amount, and instructs switching. A switching control unit is provided.

  According to the present invention, in a state where the power storage unit of the electric device is not connected to the charging terminal and the power feeding terminal, the supply source switching unit selects the commercial power source, so that the first home appliance and the Supply power to two home appliances. When there is a margin for power supply from the commercial power source, the commercial power source and the power storage unit are energized at the charging terminal unit when the power storage unit of the electric device is connected to the charging terminal and the power feeding terminal. In the power supply terminal unit, the power storage unit and the supply source switching unit are electrically cut off to charge the power storage unit using a commercial power source. On the other hand, the commercial power source and the power storage unit are electrically cut off at the charging terminal unit, and the power storage unit and the power source switching unit are energized at the power feeding terminal unit, and the first terminal unit and the power storage unit are connected at the power source switching unit. By supplying power to the unit, power is supplied from the power storage unit to the first home appliance. In either case, the second home appliance is supplied with power from a commercial power source. At this time, when the power consumption of the first household electrical appliance and the second household electrical appliance is large, the power from the commercial power source and the first household electrical appliance and Supply to two home appliances. And in the situation where the supply electric power of household appliances is insufficient, the electric power consumption of a 1st household appliance is further supplied from an electrical storage part.

The power distribution system according to the present invention is the power distribution system, wherein the power storage unit includes a plurality of cells, and the cells are exchanged between the plurality of electric devices according to the capacity of the power storage unit. A power storage unit exchange device is provided.
According to the present invention, a cell having a sufficient capacity can be exchanged among a plurality of electric devices, and the life of the power storage unit can be extended and the energy can be used efficiently.

  In addition, the power distribution method according to the present invention includes power consumption external factor information, power consumption of a first household electrical appliance having a relatively low importance and a power consumption of a second household electrical appliance having a relatively high importance, From the information acquisition step of acquiring behavior information and battery capacity information of the power storage unit that supplies electric power to the electric device, the power consumption and the power consumption external factor information, the first home appliance and the second Home appliance power demand prediction step for predicting power consumption of home appliances, power storage unit demand prediction step for predicting the discharge amount of the power storage unit from the power consumption external factor information and the battery capacity information, and the power storage unit A charging step of charging the power storage unit so that a remaining capacity of the power storage unit exceeds a predicted discharge amount and power consumption of the first home appliance, and power of the first home appliance and the second home appliance Supply from commercial power supply When greater than capacity electric energy, characterized in that the power supply for the first home appliance and a, a supply step of switching to the power storage unit from the commercial power source.

  ADVANTAGE OF THE INVENTION According to this invention, even after the electric power feeding from the storage battery mounted in the electrically-driven device, the charge which can ensure the originally required charge amount can be performed, and the increase in the load of the commercial power supply can be suppressed to the household appliance. Power supply can be maintained.

It is a schematic diagram showing a power distribution system concerning one embodiment of the present invention. It is a functional block diagram which shows the power distribution apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the power distribution method which concerns on one Embodiment of this invention. It is explanatory drawing which shows the power distribution state by the power distribution system which concerns on one Embodiment of this invention. It is explanatory drawing which shows the power distribution state by the power distribution system which concerns on one Embodiment of this invention. It is explanatory drawing which shows the power distribution state by the power distribution system which concerns on one Embodiment of this invention. It is explanatory drawing which shows the power distribution state by the power distribution system which concerns on one Embodiment of this invention.

An embodiment according to the present invention will be described with reference to FIGS.
As shown in FIG. 1, the power distribution system 1 according to the present embodiment is supplied with power from a commercial power source P1 and can charge and discharge a battery (power storage unit) P2 of an electric vehicle (electric device) S. And is distributed to the home U of the user U.

  The power distribution system 1 includes a power distribution device 10, a charging terminal unit 11, a first terminal unit 12, a supply source switching unit 13, a second terminal unit 15, a power feeding terminal unit 16, and a power storage device. A capacity measuring unit 17.

  The power distribution apparatus 10 includes a storage unit 18 that stores various types of information, a server-side arithmetic processing unit (not illustrated) that associates various types of information, a program memory unit (not illustrated) that stores programs necessary for various types of processing, And a control server 20 having an input / output interface unit (not shown) that performs transmission and reception. These are connected so that they can communicate with each other.

  The power distribution apparatus 10 includes a charge / discharge calculation unit 21, a charge / discharge control unit 22, and a switching control unit 23 as functional units (program modules) of the power distribution program, as shown in FIG. Yes. These functional units are respectively controlled by the control unit 25 realized by the server-side arithmetic processing unit and the program memory unit.

  The storage unit 18 stores the home appliance HE that is supplied from the commercial power supply P1 and the power consumption external factor information of the battery P2 that is disposed in the electric vehicle S and the power consumption of the home appliance HE. , The predicted power consumption of the battery P2, and the predicted discharge amount of the battery P2 calculated based on the battery capacity information of the battery P2 are stored. It is databased. Here, the power consumption external factor information refers to information that affects the power demand of the commercial power supply P1 and the battery P2, such as weather information, and is stored in the storage unit 18 via the Internet (not shown).

  The charge / discharge calculation unit 21 calculates charge / discharge information including the charge / discharge amount and charge / discharge timing of the battery P <b> 2 based on the predicted power consumption and the predicted discharge amount stored in the storage unit 18. Then, the home appliance power monitoring unit 26 that monitors the power consumption of the home appliance HE, the power consumption prediction unit 27 that calculates the predicted power consumption of the home appliance HE based on the power consumption external factor information and the power consumption, Discharge amount prediction that calculates the predicted discharge amount of the battery P2 based on the behavior detection unit 28 that detects the stroke record (behavior information) of the vehicle S, the power consumption external factor information, the stroke record of the electric vehicle S, and the battery capacity information. And a charge / discharge information calculation unit 31 that calculates charge / discharge information from the predicted power consumption and the predicted discharge amount.

The charge / discharge control unit 22 controls charge / discharge of the battery P2 based on the charge / discharge information.
Note that the predicted power consumption and the predicted discharge amount calculated in advance may be stored in the storage unit 18. In this case, the charge / discharge calculation unit 21 may include only the charge / discharge information calculation unit 31.

  The switching control unit 23 calculates each switching timing of the charging terminal unit 11, the supply source switching unit 13, and the power feeding terminal unit 16 based on the predicted power consumption and the predicted discharge amount, and issues a switching instruction.

  The charging terminal unit 11 is configured to energize or cut off the commercial power supply P1 and the battery P2 when the commercial power supply P1 and the battery P2 are connected via the charge / discharge cable 32.

  Here, when it is assumed that the home appliance HE includes the first home appliance HE1 having a relatively low importance and the second home appliance HE2 having a relatively high importance, The first home appliance HE1 is connected, and the second home appliance HE2 is connected to the second terminal portion 15.

  The supply source switching unit 13 is connected to the first terminal unit 12 at one end and the commercial power supply P1 and the power supply terminal unit 16 at the other end, and the power supply terminal unit 16 and the battery P2 are connected. It is configured to permit energization with either the commercial power source P1 or the battery P2.

  The power supply terminal unit 16 is configured to energize or block the battery P2 and the supply source switching unit 13 when connected to the battery P2 via the charge / discharge cable 32. Here, the power supply terminal unit 16 and the supply source switching unit 13 are connected via an inverter 33.

  Next, the power distribution method according to the present embodiment will be described with reference to FIGS. 3 to 6 together with the operations of the power distribution device 10 and the power distribution system 1.

  As shown in FIG. 3, the power distribution method according to the present embodiment includes an information acquisition step (S01), a home appliance power demand prediction step (S02), a power storage unit demand prediction step (S03), and a charging step (S04). ) And a supplying step (S05).

  First, as shown in FIG. 4, while going out in the electric vehicle S, the switching control unit 23 switches the supply source switching unit 13 to make the first terminal unit 12 and the commercial power source P <b> 1 conductive. On the other hand, as shown in FIG. 1, when the electric vehicle S and the power distribution system 1 are connected via the charge / discharge cable 32, the power distribution method according to the present embodiment is started.

  In the information acquisition step (S01), power consumption external factor information, power consumption of the first home appliance HE1 and second home appliance HE2, a process record of the electric vehicle S, and battery capacity information of the battery P2 are acquired. And stored in the storage unit 18.

  In the home appliance power demand forecasting step (S02), the power of the first home appliance HE1 and the second home appliance HE2 is calculated by the charge / discharge calculation unit 21 from the power consumption stored in the storage unit 18 and the power consumption external factor information. Predict consumption. As described above, the predicted power consumption may be calculated in advance and stored in the storage unit 18.

  In the power storage unit demand prediction step (S03), the charge / discharge operation unit 21 predicts the discharge amount of the battery P2 from the power consumption external factor information, the process record of the electric vehicle S, and the battery capacity information of the battery P2, and the battery Charge / discharge information including the charge / discharge amount and charge / discharge timing of P2 is calculated. Here, when charging the battery P2, charge / discharge information is generated such that the remaining capacity of the battery P2 exceeds the total of the predicted discharge amount of the battery P2 and the predicted power consumption amount of the first home appliance HE1. . As described above, the predicted discharge amount may be calculated in advance and stored in the storage unit 18.

  In the charging step (S04), based on the charge / discharge information, the battery P2 is charged so that the remaining capacity of the battery P2 exceeds the total of the predicted discharge amount of the battery P2 and the predicted power consumption amount of the first home appliance HE1. At this time, as shown in FIG. 5, the switching control unit 23 makes the commercial power supply P1 and the battery P2 conductive at the charging terminal unit 11, and at the power supply terminal unit 16, the supply source switching unit 13 and the battery P2 are connected. In the supply source switching unit 13, the first terminal unit 12 and the commercial power source P1 are made conductive. Thereby, the battery P2 is supplied with electric power from the commercial power supply P1 and stored. Both the first home appliance HE1 and the second home appliance HE2 operate by supplying power from the commercial power supply P1.

  The supply process (S05) shifts to a state where the predicted power consumption of the home appliance HE is predicted to exceed the suppliable power amount of the commercial power supply P1 based on the contract. At this time, as shown in FIG. 6, the switching control unit 23 shuts off the commercial power supply P1 and the battery P2 in the charging terminal unit 11, and switches the supply source switching unit 13 and the battery P2 in the power feeding terminal unit 16. The supply source switching unit 13 makes the first terminal unit 12 and the battery P2 conductive. At this time, the battery P2 is charged so that the predicted power consumption of the first home appliance HE1 is lower than the remaining capacity obtained by subtracting the predicted discharge amount of the battery P2. Thereby, 1st household appliances HE1 operate | moves by the electric power supply from the battery P2. On the other hand, the second home appliance HE2 is operated by supplying power from the commercial power supply P1.

  According to the power distribution system 1, the power distribution device 10, and the power distribution method, the charge amount of the battery P2 is controlled by acquiring the tendency of the energy usage of the user of the electric vehicle S or the home appliance HE. In addition, it is possible to prevent overcharging and prolong the service life.

In addition, even if the power consumption in the home suddenly increases, it can be switched to supply power from the battery P2 of the electric vehicle S that is not being used, and the first household appliance HE1 is less important. However, the maximum power consumption can be suppressed without stopping the operation.
Furthermore, the battery P2 of the electric vehicle S is charged more than originally required by predicting the power consumption of the day in advance from the trend of power consumption of the user U and the situation of the day. Therefore, even if power is supplied from the battery P2, the subsequent use of the electric vehicle S is not affected. That is, it is possible to estimate the day of the week and the time of the day when the amount of power consumption associated with the use of the home appliance HE or the electric vehicle S is large, and the amount of charge of the battery P2 can be changed accordingly. Can be used.

  Further, since the predicted power consumption and the predicted discharge amount are acquired together with the life pattern of the user U, the user U is suggested to use the home appliance HE and the electric vehicle S that are more energy saving, and the user U is abnormal. Guidance can be provided to reduce operations and wasteful operations.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the electric vehicle S is used as the electric device. However, the present invention is not limited to this, and various home robots R that operate with the battery P2 may be used as shown in FIG.

  In addition, a power storage unit exchanging device 35 for exchanging the cells C of the batteries P2 mounted on each other between the electric vehicle S and the home robot R may be provided according to the capacity of the battery P2. As a result, the energy can be used efficiently and the life of the cell C can be extended.

DESCRIPTION OF SYMBOLS 1 Power distribution system 10 Power distribution apparatus 11 Charging terminal part 12 First terminal part 13 Supply source switching part 15 Second terminal part 16 Power supply terminal part 17 Storage capacity measuring part 18 Storage part 21 Charging / discharging calculating part 22 Charging / discharging control Unit 23 switching control unit 26 home appliance power monitoring unit 27 power consumption prediction unit 28 behavior detection unit 30 discharge amount prediction unit 31 charge / discharge information calculation unit 35 power storage unit switching device C cell HE home appliance HE1 first home appliance HE2 second home appliance P1 Commercial power supply P2 Battery (power storage unit)
S Electric car (electric device)
R Domestic robot (electric device)

Claims (6)

The power consumption external factor information of the power storage unit of the home appliance and electric device supplied with power from the commercial power source, the predicted power consumption of the home appliance calculated based on the power consumption of the home appliance, and the power consumption external factor Information, the behavior information of the electric device, and the predicted discharge amount of the power storage unit calculated based on the battery capacity information of the power storage unit, and the predicted discharge amount of the power storage unit and a part of the home appliance A charge / discharge calculation unit that calculates charge / discharge information including a charge / discharge amount and a charge / discharge timing of the power storage unit, so that a remaining capacity of the power storage unit exceeds a total power consumption;
Based on the charge / discharge information, a charge / discharge control unit that charges / discharges the power storage unit,
A power distribution device comprising: The charge / discharge operation unit is
A home appliance power monitoring unit for monitoring the power consumption of the home appliance,
Based on the power consumption external factor information and the power consumption, a power consumption prediction unit that calculates a predicted power consumption of the home appliance,
An action detector for detecting action information of the electric device;
A discharge amount prediction unit that calculates a predicted discharge amount of the power storage unit based on the power consumption external factor information, the behavior information, and the battery capacity information;
A charge / discharge information calculation unit for calculating charge / discharge information of the power storage unit from the predicted power consumption and the predicted discharge amount;
The power distribution device according to claim 1, further comprising: Computer
A power distribution program that functions as the power distribution device according to claim 1. The power distribution device according to claim 1 or 2,
When the commercial power source and the power storage unit are connected, a charging terminal unit that energizes or shuts off the commercial power source and the power storage unit;
Among the home appliances, a first terminal portion to which a first home appliance having a relatively low importance is connected,
A supply source switching unit that is connected to the first terminal unit and the commercial power source and permits energization of either the commercial power source or the power storage unit when connected to the power storage unit;
A second terminal portion connected to the commercial power source, to which a second household electrical appliance having a relatively high importance is connected among the household electrical appliances;
A power supply terminal unit that is connected to the power source switching unit and energizes or interrupts the power storage unit and the power source switching unit when connected to the power storage unit;
A storage capacity measuring unit for detecting battery capacity information of the storage unit;
With
Switching control in which the power distribution device calculates each switching timing of the charging terminal unit, the supply source switching unit, and the power feeding terminal unit and instructs switching based on the predicted power consumption and the predicted discharge amount A power distribution system comprising a section. The power storage unit includes a plurality of cells,
5. The power distribution system according to claim 4, further comprising: a power storage unit exchanging device that replaces the cells among the plurality of electric devices according to a capacity of the power storage unit. Power consumption external factor information, power consumption of the first household appliance with relatively low importance and the second household appliance with relatively high importance, behavior information of the electric device, and power supply to the electric device An information acquisition step of acquiring battery capacity information of the power storage unit;
From the power consumption and the power consumption external factor information, home appliance power demand prediction step for predicting the power consumption of the first home appliance and the second home appliance,
From the power consumption external factor information and the battery capacity information, a power storage unit demand prediction step for predicting a discharge amount of the power storage unit,
A charging step of charging the power storage unit so that a remaining capacity of the power storage unit exceeds a predicted discharge amount of the power storage unit and a power consumption amount of the first home appliance;
Supplying step of switching power supply for the first home appliance from the commercial power source to the power storage unit when the power demand of the first home appliance and the second home appliance is larger than the amount of power that can be supplied from the commercial power source When,
A power distribution method comprising:

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