JP2010268576A - Power supply distribution control apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To unfailingly charge a storage battery installed on an automobile, using the power generated by a solar battery. <P>SOLUTION: An estimated photovoltaic power generated amount and an estimated charging amount of the storage battery for an automobile are calculated, and the distribution of the power is controlled so that the photovoltaic power generation amount may be supplied to the storage battery for an automobile (100-106). If the estimated photovoltaic power amount is larger than the estimated charged amount, power distribution is controlled so that excessive power is supplied to loads in dwellings (108, 112). If the estimated photovoltaic power generation amount is larger than a power generated amount obtained by adding the estimated charged amount to the loads of the dwellings, power distribution is controlled so that the excessive power is supplied to the storage battery for a dwelling (114, 116, 122), and the storage battery is charged, when further, the excessive power becomes available (124-126). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power supply distribution control device, and more particularly to a power supply distribution control device that controls supply distribution of power generated by a solar cell.

  In recent years, in consideration of environmental problems and the like, a technique for charging a storage battery with electric power generated by a solar battery and using it in a house has become widespread.

  For example, in the technique described in Patent Document 1, a storage battery that charges generated power from a solar battery disposed outdoors, a heat pump unit that operates by supplying power from the storage battery, a controller that controls the operation of the heat pump unit, A hot water tank that stores hot water as a high-temperature heat source by operating the heat pump unit, and an air conditioner that heats the interior by heat exchange with the high-temperature heat source of the hot water tank, and supplies the power generated by the solar panel to the storage battery In addition to charging, it has been proposed to forcibly operate the heat pump unit by supplying surplus power to the heat pump unit.

JP-A-6-42781

  However, in the technique described in Patent Document 1, the electric power generated by the solar battery is charged in the storage battery, and the surplus is supplied to the heat pump unit. However, when the hot water of the heat source is not used, the electric power is stored in the hot water tank. There is room for improvement because the energy consumed is wasted.

  On the other hand, in consideration of environmental problems, automobiles such as hybrid cars and electric cars that generate a small amount of carbon dioxide gas are attracting attention, and the storage batteries installed in these cars are charged using the power generated by solar cells. However, when there is a lot of electric power used in a house, it may become impossible to charge a storage battery mounted in a car.

  The present invention has been made in consideration of the above-described facts, and an object of the present invention is to reliably charge a storage battery mounted on an automobile with the generated power of a solar battery.

  In order to achieve the above object, the invention described in claim 1 is directed to a solar battery that generates electricity by sunlight, a building storage battery that stores electric power used in a building, and an electric power that is mounted on an automobile and travels. Connecting means for electrically connecting to the vehicle storage battery, a power load that consumes power in the building, the building storage battery, and the vehicle storage battery connected to the connection means generated by the solar battery It is characterized by comprising control means for controlling so that the electric power is distributed and supplied and preferentially supplied to the vehicle storage battery when the electric power is distributed and supplied.

  According to the first aspect of the present invention, in the solar cell, power is generated by sunlight, and the building storage battery stores electric power used in the building.

  In addition, a vehicle storage battery that is mounted on an automobile and stores electric power for traveling is electrically connected by the connecting means.

  Then, the control means distributes and controls the distribution of the electric power generated by the solar battery to the electric power load that consumes electric power in the building, the building storage battery, and the vehicle storage battery connected to the connection means. At this time, the control means is controlled so as to be preferentially supplied to the vehicle storage battery.

  That is, since the power generated by the solar battery is preferentially supplied to the vehicle storage battery, the generated power is not consumed in the building and cannot be supplied to the vehicle storage battery, and the vehicle storage battery can be reliably charged. it can.

  For example, as in the invention described in claim 2, the control means distributes the generated power of the solar battery so that a part of the power generated by the solar battery is preferentially supplied to the vehicle storage battery. May be controlled. That is, instead of instantaneously supplying all the electric power generated by the solar battery to the vehicle storage battery, by supplying only a part of the generated electric power to the vehicle storage battery, The amount of electric power necessary for charging the vehicle storage battery can be secured, and charging that is gentle to the vehicle storage battery is possible.

  Further, as in the third aspect of the invention, the acquisition of acquiring the mileage record of the vehicle including the mileage per day or the power consumption excluding the private power generation of the vehicle as information indicating the required electric energy of the vehicle. Means for controlling the distribution of the generated power of the solar cell so that the proportion of power supplied to the vehicle storage battery increases as the required power amount represented by the information acquired by the acquiring means increases. It may be. Thereby, electric power required in order to charge the storage battery for vehicles among the generated electric power of a solar cell is securable.

  Further, as in the invention according to claim 4, the control means distributes the generated power of the solar cell so that the power supply to the vehicle storage battery is stopped when the vehicle storage battery is charged by a predetermined amount. When the vehicle storage battery connected to the connection means is in a new charge state, or when the charge amount is a predetermined amount or less, as in the invention according to claim 5, You may make it control so that electric power supply is started to the storage battery for vehicles.

  In addition, as in the invention described in claim 6, the control means preferentially supplies the first surplus power obtained by subtracting the charging power to the vehicle storage battery from the generated power of the solar battery to the power load. You may make it control distribution of the generated electric power of a solar cell. At this time, as in the invention described in claim 7, the second surplus power obtained by subtracting the power required by the power load from the first surplus power is preferentially supplied to the building storage battery. You may make it control distribution of generated electric power. At this time, as in the invention described in claim 8, the supply of the generated power of the solar cell so that the third surplus power obtained by subtracting the charging power to the building storage battery from the second surplus power is sold. The distribution may be controlled.

  In addition, as in the invention described in claim 9, the control means generates power from the building storage battery when the amount of charge of the vehicle storage battery or the amount of power consumed by the power load is not enough for the power generation amount of the solar battery alone. May be controlled so as to be supplied, or as in the invention according to claim 10, the building storage battery may be further charged using nighttime power.

  In addition, the invention of claim 7 is further provided with a heat storage device that stores heat by electric power as in the invention of claim 11, and the control means supplies charging power from the second surplus power to the building storage battery. You may make it control supply distribution of the generated electric power of a solar cell so that the 3rd surplus electric power deducted may be supplied to a thermal storage apparatus. Thereby, when there exists surplus electric power, it can supply to a thermal storage apparatus and the electric power generation energy of a solar cell can be stored. In this case, as in the invention described in claim 12, the control means calculates an average heat storage time or heat storage amount from a daily heat storage time or heat storage amount of the heat storage device, and calculates the above-mentioned from the calculation result. The heat storage start time of the heat storage device may be determined, and further control may be performed so that electric power is supplied to the heat storage device at the determined heat storage start time.

  As described above, according to the present invention, since the electric power generated by sunlight is controlled so as to be distributed and supplied to the vehicle storage battery with priority, the storage battery mounted on the vehicle by the generated electric power of the solar battery is controlled. There is an effect that the battery can be reliably charged.

It is a figure which shows schematic structure of the electric power supply distribution control apparatus concerning 1st Embodiment of this invention. It is a block diagram which shows the structure of the control system of the power management apparatus in the power supply distribution control apparatus concerning 1st Embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed with the electric power supply distribution control apparatus concerning 1st Embodiment of this invention. It is a figure which shows schematic structure of the electric power supply distribution control apparatus concerning 2nd Embodiment of this invention. It is a block diagram which shows the structure of the control system of the power management apparatus in the power supply distribution control apparatus concerning 2nd Embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed with the electric power supply distribution control apparatus concerning 2nd Embodiment of this invention.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.
(First embodiment)
The power supply distribution control apparatus according to the first embodiment of the present invention will be described. FIG. 1 is a diagram showing a schematic configuration of a power supply distribution control apparatus according to the first embodiment of the present invention.

  The power supply distribution control device 10 according to the first embodiment of the present invention includes a power management device 14 that controls supply of power used in a building 12 such as a house. In addition, as a building 12, although the detached house is shown as an example in FIG. 1, it is not restricted to this, You may make it apply an apartment house and another building.

  Connected to the power management apparatus 14 are a solar battery 16, a commercial power supply 18, and a switchboard 22, and a vehicle storage battery 26 mounted on a car 28 such as a hybrid car or an electric car equipped with an engine and a motor. It is possible. The power management apparatus 14 includes a residential storage battery 20 that stores electric power for use in the building 12. The power management device 14 and the vehicle storage battery 26 are connected by a cable 21 for electrical connection (so-called plug-in).

  The solar cell 16 has a solar panel that converts solar energy into electric power, and supplies the electric power converted by the solar panel to the power management apparatus 14.

  The power management device 14 includes an inverter converter, and has a function of converting AC power into DC power or converting DC power into AC power. The power supplied from the commercial power supply 18 is converted into DC power. It is charged by converting it and supplying it to the storage battery 20 for vehicles or the storage battery 26 for vehicles, or the electric power generated by the solar battery 16 or the electric power stored in the storage battery 20 for residential use is converted into alternating current power and supplied via the switchboard 22. Then, the power is supplied to electrical equipment (for example, lighting, air conditioner, etc.) provided in the building 12, or the electric power generated by the solar cell 16 or the electric power stored in the storage battery 20 is converted into alternating current power, thereby supplying the commercial power source 18. The power supply control is performed such as selling power by supplying power to the power source or supplying power supplied from the commercial power source 18 to the electrical equipment provided in the building 12 via the switchboard 22.

  In addition, the power management device 14 supplies the power generated by the solar battery 16 to the vehicle storage battery 26, the switchboard 22 and the residential storage battery 20, but controls distribution when supplying power.

  Next, the configuration of the control system for controlling the power distribution by the power management apparatus 14 will be described. FIG. 2 is a block diagram showing the configuration of the control system of the power management apparatus 14 in the power supply distribution control apparatus 10 according to the first embodiment of the present invention.

  As shown in FIG. 2, the power management apparatus 14 includes a power distribution determination unit 30, and determines a distribution when the power management apparatus 14 supplies power to each power supply destination.

  The power distribution determination unit 30 is connected with a photovoltaic power generation power prediction unit 32, a residential storage battery charge amount monitoring unit 34, a vehicular storage battery charge amount prediction unit 36, and a residential load monitoring unit 38, and also with power supply control. The unit 40 is connected. In other words, the power distribution determination unit 30 determines the power based on the information obtained from the photovoltaic power generation prediction unit 32, the storage battery charge amount monitoring unit 34 for housing, the storage battery charge amount prediction unit 36 for vehicle, and the house load monitoring unit 38. The distribution is determined and the power supply control unit 40 is controlled.

  A solar power generation power monitoring unit 42 is connected to the solar power generation power prediction unit 32, and the power generated by the solar cell 16 is monitored by the solar power generation power monitoring unit 42, and the monitoring result is the solar power generation power. It is output to the prediction unit 32. The solar power generation power prediction unit 32 predicts the power generation amount of the solar battery 16 from the monitoring result by the solar power generation power monitoring unit 42, and outputs the prediction result to the power distribution determination unit 31. For example, the solar power generation power prediction unit 32 can predict the solar power generation power based on the weather forecast of the next day using the technology described in Japanese Patent No. 2612639.

  The residential storage battery charge amount monitoring unit 34 detects the charge amount of the residential storage battery 20 and outputs the detection result to the power distribution determination unit 30.

  The vehicle storage battery charge amount prediction unit 36 is connected to a vehicle information acquisition unit 44 that acquires the charge amount of the vehicle storage battery 26 as vehicle information, and the vehicle information acquired by the vehicle information acquisition unit 44 is the vehicle storage battery. It is output to the charge amount prediction unit 36. The vehicle storage battery charge amount prediction unit 36 predicts the charge amount of the vehicle storage battery 26 from the vehicle information acquired by the vehicle information acquisition unit 44.

  In addition, the vehicle information acquisition unit 44 acquires information such as the actual driving distance of the vehicle including the driving distance per day, the power consumption excluding private power generation of the vehicle 28, and the acquired result is stored in the vehicle storage battery charge amount prediction unit 36. Is output to the power distribution determination unit 30.

  The residential load monitoring unit 38 monitors the power supplied from the switchboard 22 to the electrical equipment in the building 12 and outputs the monitoring result to the power distribution determining unit 30.

  And the electric power distribution determination part 30 is based on the information input from the photovoltaic power generation electric power prediction part 32, the storage battery charge amount monitoring part 34 for houses, the storage battery charge amount prediction part 36 for vehicles, and the house load monitoring part 38, The distribution of the power generated by the solar cell 16 is determined, and the determination result is output to the power supply control unit 40. Thereby, the power supply control unit 40 controls the supply of the generated power of the solar cell 16 according to the distribution determined by the power distribution determination unit 30.

  Specifically, the power distribution determination unit 30 controls the power distribution generated by the solar cell 16 by determining the power distribution to the switchboard 22, the residential storage battery 20, and the vehicle storage battery 26. At this time, in the present embodiment, the distribution is determined so that the power generated by the solar battery 16 is preferentially distributed to the vehicle storage battery 26 and the power is supplied.

  Next, processing performed by the power supply distribution control device 10 according to the first embodiment of the present invention configured as described above will be described. FIG. 3 is a flowchart showing an example of the flow of processing performed by the power supply distribution control device 10 according to the first embodiment of the present invention.

  First, in step 100, the predicted solar power generation amount T is calculated, and the routine proceeds to step 102. For example, the photovoltaic power generation prediction unit 32 may calculate the predicted photovoltaic power generation amount based on the weather forecast, the season (time from sunrise to sunset), the capacity of the solar cell 16, and the like. The daily power generation amount may be stored by the solar power generation monitor 42 and predicted from the daily power generation amount.

  In step 102, the expected charge amount S of the vehicle storage battery 26 is calculated, and the routine proceeds to step 104. That is, the vehicle storage battery charge amount prediction unit 36 acquires vehicle information from the automobile 28 via the vehicle information acquisition unit 44, predicts the charge amount of the vehicle storage battery 26, and sends the prediction result to the power distribution determination unit 30. Output. As the prediction of the charge amount by the vehicle storage battery charge amount prediction unit 36, for example, the amount of electric power necessary for full charge can be calculated from the remaining amount of the vehicle storage battery 26, or the travel distance per day Mileage of the vehicle 28 including the vehicle power consumption, or the power consumption excluding the vehicle's in-house power generation may be predicted from the information indicating the required power amount of the vehicle 28. You may make it memorize | store a usage-amount and calculate the average value of a power usage-amount.

  In step 104, the power distribution determination unit 30 determines whether or not the vehicle storage battery 26 needs to be charged. The determination is made by the vehicle storage battery charge amount prediction unit 36 acquiring the charge amount of the vehicle storage battery 26 via the vehicle information acquisition unit 44 and outputting the acquisition result to the power distribution determination unit 30. 30 determines whether or not the vehicle storage battery 26 is fully charged, or whether or not there is a remaining amount of charge greater than a predetermined amount with respect to the average value of power consumption, and if the determination is negative, step If the result is affirmative, the process proceeds to step. In step 104, the determination is denied when it is determined that charging is necessary even when the vehicle storage battery 26 is in a new charged state or when the charge amount is equal to or less than a predetermined amount.

  In step 106, solar power is supplied to the vehicle storage battery 26 and the process proceeds to step 108. That is, the power distribution determination unit 30 controls the power supply control unit 40 to control the power distribution so that the power generated by the solar cell 16 is supplied to the vehicle storage battery 26. In the present embodiment, the power distribution control unit 40 controls the power supply control unit 40 so that the proportion of the power supplied to the vehicle storage battery 26 increases as the vehicle storage battery expected charge amount S increases. Further, the charging of the vehicle storage battery 26 by the power supply control unit 40 is controlled so as to be stopped when the charging amount of the vehicle storage battery 26 is charged by a predetermined amount. At this time, the electric power distribution determination unit 30 knows the estimated storage amount S for the vehicle storage battery, and therefore, among the time periods during which power is generated by the solar battery 16, it is sufficient to charge the vehicle for □ hour □ kWh. Therefore, it is not necessary to instantaneously charge the vehicle storage battery 26 with the power generated by the solar battery 16, and only a part of the power generated by the solar battery 16 may be charged. As a result, it is possible to secure the amount of power necessary for charging the vehicle storage battery 26 out of the generated power of the solar battery 16 and to allow the vehicle storage battery 26 to be charged gently.

  In step 108, it is determined by the power distribution determination unit 30 whether or not the predicted photovoltaic power generation amount T is larger than the vehicle storage battery expected charge amount S. If the determination is negative, the process proceeds to step 110 and affirmed. If YES, go to step 112.

  In step 110, the electric power stored in the residential storage battery 20 is supplied to the vehicle storage battery 26 and the residential load (distribution panel 22), and the process proceeds to step 120. That is, the power distribution determination unit 30 controls the power supply control unit 40 to control the distribution so that the power stored in the residential storage battery 20 is supplied to the vehicle storage battery 26 and the switchboard 22.

  In step 112, surplus power obtained by subtracting the vehicle storage battery predicted charge amount S from the predicted photovoltaic power generation amount T is supplied to the house load, and the process proceeds to step 114. That is, when the power distribution determining unit 30 controls the power supply control unit 40, surplus power (TS) obtained by subtracting the vehicle storage battery predicted charge amount S from the predicted solar power generation amount T is supplied to the switchboard 22. So as to control the distribution of power.

  In step 114, the house load J is calculated and the routine proceeds to step 116. For example, the housing load monitoring unit 38 monitors the power supplied from the switchboard 22 and outputs the monitoring result to the power distribution determining unit 30, and the power distribution determining unit 30 calculates the housing load J from the housing load monitoring unit 38. Based on the obtained monitoring result, the average amount of power supplied to the switchboard 22 is calculated.

  In step 116, it is determined by the power distribution determination unit 30 whether or not the predicted photovoltaic power generation amount T is larger than the power amount obtained by adding the vehicle storage battery predicted charge amount S and the house load J, and the determination is denied. If yes, then go to Step 118; if yes, go to Step 122.

  In step 118, the electric power of the residential storage battery 20 is supplied to the residential load, and the routine proceeds to step 120. That is, the power distribution determining unit 30 controls the power supply control unit 40 to distribute the power so that the power stored in the residential storage battery 20 is supplied to the switchboard 22.

  In step 120, control is performed so that the residential storage battery 20 is charged with midnight power, and the routine proceeds to step 122. That is, at a predetermined midnight time when the power rate is reduced, the power distribution determining unit 30 controls the power supply control unit 40 so that power is supplied from the commercial power supply 18 to the residential storage battery 20. To do. Thus, the residential storage battery 20 can be charged using late-night power.

  On the other hand, in step 122, surplus power obtained by subtracting the vehicle storage battery predicted charge amount S and the house load J from the predicted photovoltaic power generation amount T is supplied to the house storage battery 20, and the process proceeds to step 124. That is, when the power distribution determination unit 30 controls the power supply control unit 40, surplus power (TSJ) obtained by subtracting the vehicle storage battery expected charge amount S and the house load J from the expected solar power generation amount T is obtained. The distribution of electric power is controlled so as to be supplied to the storage battery 20 for housing.

  In step 124, the power distribution determination unit 30 determines whether there is surplus power. In the determination, the power distribution determination unit 30 determines whether or not there is surplus power even if it is supplied to the vehicle storage battery 26 and the house load. If the determination is affirmative, the process proceeds to step 126, and negative If so, the process proceeds to step 128.

  In step 126, surplus power is sold, and the process proceeds to step 128. That is, the power distribution determining unit 30 controls the power supply control unit 40 to control power distribution so that surplus power generated by the solar cell 16 is supplied to the commercial power supply 18.

  In step 128, the power distribution determining unit 30 determines whether or not the photovoltaic power generation is completed. In the determination, the power distribution determination unit 30 may determine whether or not a predetermined time has come, and the monitoring result of the solar power generation power monitoring unit 42 is distributed via the solar power generation power prediction unit 32. The determination unit 30 may acquire and determine whether or not the power generation by the solar cell 16 is lost. If the determination is negative, the process returns to step 100 and the above-described processing is repeated. If the determination is affirmative, the series of processing ends. In addition, after the power generation by the solar cell 16 is completed, the power stored in the residential storage battery 20 by the power generated by the solar cell 16 or the late-night power is supplied to the building 12, so that economical and environmentally friendly power supply can be achieved. It becomes possible.

  Thus, in this embodiment, since the electric power generated by the solar cell 16 is preferentially charged to the vehicle storage battery 26, the vehicle storage battery 26 can be reliably charged. As a result, in a home where the automobile 28 can be used even in the daytime, it is economical because the power generated by the solar cell 16 can be reliably charged.

  In the present embodiment, the power generated by the solar battery 16 is preferentially supplied in the order of the vehicle storage battery 26, the house load, and the house storage battery 20, so that the power generated by the solar battery 16 is wasted. Can be used efficiently.

Further, when the power generated by the solar battery 16 is used to charge the vehicle storage battery 26, supply power to the house load, charge the residential storage battery 20, and sell power, and the vehicle storage battery 26. When the charging, the supply to the housing load, and the charging of the housing storage battery 20 are performed, the CO2 emission becomes zero, and the effect of suppressing global warming is high. Moreover, it becomes possible to reduce CO2 emission, so that the supply distribution destination of the solar cell 16 increases.
(Second Embodiment)
Next, the power supply distribution control apparatus according to the second embodiment of the present invention will be described. FIG. 4 is a diagram showing a schematic configuration of a power supply distribution control device according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated about the same structure as 1st Embodiment. Moreover, in this embodiment, it is set as the structure further provided with the thermal storage apparatus 24 with respect to 1st Embodiment.

  The power supply distribution control device 11 according to the second embodiment of the present invention includes a power management device 14 that controls the supply of power used in a building 12 such as a house. As the building 12, FIG. 4 shows a detached house as an example, but the present invention is not limited to this, and an apartment house or other buildings may be applied.

  The power management device 14 is connected to a solar cell 16, a commercial power source 18, a switchboard 22, and a heat storage device 24, and is used for a vehicle mounted on a vehicle 28 such as a hybrid vehicle or an electric vehicle equipped with an engine and a motor. The storage battery 26 is connectable. The power management apparatus 14 includes a residential storage battery 20 that stores power for use in the building 12. The power management device 14 and the vehicle storage battery 26 are connected by a cable 21 for electrical connection (so-called plug-in).

  The solar cell 16 has a solar panel that converts solar energy into electric power, and supplies the electric power converted by the solar panel to the power management apparatus 14.

  The heat storage device 24 stores heat by supplying hot water using electric power supplied from the power management device 14 and supplies hot water to the building 12. For example, the heat storage device 24 supplies hot water by raising the temperature of the water using the generated power of the solar cell 16 or midnight power. In addition, in this embodiment, although the heat storage apparatus 24 heats up water and stores heat, you may make it apply another method as a heat storage method.

  The power management device 14 includes an inverter converter, and has a function of converting AC power into DC power or converting DC power into AC power. The power supplied from the commercial power supply 18 is converted into DC power. It is charged by converting it and supplying it to the storage battery 20 for vehicles or the storage battery 26 for vehicles, or the electric power generated by the solar battery 16 or the electric power stored in the storage battery 20 for residential use is converted into alternating current power and supplied via the switchboard 22. Power supplied to the building 12 (for example, lighting, air conditioner, etc.) and the heat storage device 24, or the electric power generated by the solar cell 16 or the electric power stored in the residential storage battery 20 is converted into AC power. Power supply by supplying power to the commercial power supply 18 and supplying power supplied from the commercial power supply 18 to the electrical equipment provided in the building 12 via the switchboard 22. It is carried out.

  In addition, the power management device 14 supplies the power generated by the solar battery 16 to the vehicle storage battery 26, the switchboard 22 and the residential storage battery 20, but controls distribution when supplying power.

  Subsequently, the configuration of a control system for controlling the distribution of power by the power management apparatus 14 of the present embodiment will be described. FIG. 5 is a block diagram showing a configuration of a control system of the power management apparatus 14 in the power supply distribution control apparatus 11 according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated about the same structure as 1st Embodiment.

  As illustrated in FIG. 5, the power management apparatus 14 includes a power distribution determination unit 31, and determines a distribution when the power management apparatus 14 supplies power to each power supply destination.

  Connected to the power distribution determination unit 31 are a photovoltaic power generation power prediction unit 32, an estimated heat storage amount calculation unit 46, a residential battery charge amount monitoring unit 34, a vehicle storage battery charge amount prediction unit 36, and a house load monitoring unit 38. And a power supply control unit 41 is connected. That is, the power distribution determination unit 31 is obtained from the photovoltaic power generation power prediction unit 32, the predicted heat storage amount calculation unit 46, the residential storage battery charge amount monitoring unit 34, the vehicle storage battery charge amount prediction unit 36, and the residential load monitoring unit 38. The power supply control unit 41 is controlled by determining the power distribution based on the obtained information.

  A photovoltaic power generation monitoring unit 42 is connected to the photovoltaic power generation prediction unit 32, and the power generated by the solar cell 16 is monitored by the photovoltaic power generation monitoring unit 42, and the monitoring result is the photovoltaic power generation power. It is output to the prediction unit 32. The solar power generation power prediction unit 32 predicts the power generation amount of the solar battery 16 from the monitoring result by the solar power generation power monitoring unit 42, and outputs the prediction result to the power distribution determination unit 31. For example, the solar power generation power prediction unit 32 can predict the solar power generation power based on the weather forecast of the next day using the technology described in Japanese Patent No. 2612639.

  A heat storage device usage record detection unit 48 is connected to the predicted heat storage amount calculation unit 46, the use record of the heat storage device 24 is detected by the heat storage device use record detection unit 48, and the detection result is sent to the expected heat storage amount calculation unit 46. Is output. The predicted heat storage amount calculation unit 46 predicts the amount of power consumed by the heat storage device 24 from the heat storage device usage record by the heat storage device use record detection unit 48 and outputs the prediction result to the power distribution determination unit 31. For example, the predicted heat storage amount calculation unit 46 can store the daily usage record of the heat storage device 24 and can estimate the power consumption by obtaining an average or the like.

  The residential storage battery charge amount monitoring unit 34 detects the charge amount of the residential storage battery 20 and outputs the detection result to the power distribution determination unit 31.

  The vehicle storage battery charge amount prediction unit 36 is connected to a vehicle information acquisition unit 44 that acquires the charge amount of the vehicle storage battery 26 as vehicle information, and the vehicle information acquired by the vehicle information acquisition unit 44 is the vehicle storage battery. It is output to the charge amount prediction unit 36. The vehicle storage battery charge amount prediction unit 36 predicts the charge amount of the vehicle storage battery 26 from the vehicle information acquired by the vehicle information acquisition unit 44.

  In addition, the vehicle information acquisition unit 44 acquires information such as the actual driving distance of the vehicle including the driving distance per day, the power consumption excluding private power generation of the vehicle 28, and the acquired result is stored in the vehicle storage battery charge amount prediction unit 36. To the power distribution determination unit 31.

  The residential load monitoring unit 38 monitors the power supplied from the switchboard 22 to the electrical equipment of the building 12 and outputs the monitoring result to the power distribution determining unit 31.

  The power distribution determination unit 31 is input from the photovoltaic power generation power prediction unit 32, the predicted heat storage amount calculation unit 46, the residential battery charge amount monitoring unit 34, the vehicle storage battery charge amount prediction unit 36, and the house load monitoring unit 38. The distribution of the power generated by the solar cell 16 is determined based on the information to be output, and the determination result is output to the power supply control unit 41. Thereby, the power supply control unit 41 controls the supply of the generated power of the solar cell 16 according to the power supply distribution determined by the power distribution determination unit 31.

  Specifically, the power distribution determination unit 31 determines the power distribution to the switchboard 22, the residential storage battery 20, the vehicle storage battery 26, and the heat storage device 24 and supplies the power generated by the solar cell 16. Control. At this time, in this embodiment, the distribution is determined so that the electric power generated by the solar cell 16 is preferentially supplied to the vehicle storage battery 26 and the electric power is supplied.

  Next, processing performed by the power supply distribution control device 11 according to the second embodiment of the present invention configured as described above will be described. FIG. 6 is a flowchart showing an example of the flow of processing performed by the power supply distribution control device 11 according to the second embodiment of the present invention.

  First, in step 200, the predicted solar power generation amount T is calculated, and the routine proceeds to step 202. For example, the photovoltaic power generation prediction unit 32 may calculate the predicted photovoltaic power generation amount based on the weather forecast, the season (time from sunrise to sunset), the capacity of the solar cell 16, and the like. Alternatively, the daily power generation amount may be stored by the photovoltaic power generation monitoring unit 42 and predicted from the daily power generation amount.

  In step 202, the expected charge amount S of the vehicle storage battery 26 is calculated, and the routine proceeds to step 204. That is, the vehicle storage battery charge amount prediction unit 36 acquires vehicle information from the automobile 28 via the vehicle information acquisition unit 44, predicts the charge amount of the vehicle storage battery 26, and sends the prediction result to the power distribution determination unit 31. Output. As the prediction of the charge amount by the vehicle storage battery charge amount prediction unit 36, for example, the amount of electric power necessary for full charge can be calculated from the remaining amount of the vehicle storage battery 26, or the travel distance per day Mileage of the vehicle 28 including the vehicle power consumption, or the power consumption excluding the vehicle's in-house power generation may be predicted from the information indicating the required power amount of the vehicle 28. You may make it memorize | store a usage-amount and calculate the average value of a power usage-amount.

  In step 204, the power distribution determining unit 31 determines whether or not the vehicle storage battery 26 needs to be charged. The determination is made by the vehicle storage battery charge amount prediction unit 36 acquiring the charge amount of the vehicle storage battery 26 via the vehicle information acquisition unit 44 and outputting the acquisition result to the power distribution determination unit 31. 31 determines whether or not the vehicle storage battery 26 is fully charged, or whether or not there is a remaining amount of charge greater than a predetermined amount with respect to the average value of power consumption, and if the determination is negative, step If the result is affirmative, the process proceeds to step 208. In step 104, the determination is denied when it is determined that charging is necessary even when the vehicle storage battery 26 is in a new charged state or when the charge amount is equal to or less than a predetermined amount.

  In step 206, solar power is supplied to the vehicle storage battery 26 and the process proceeds to step 208. That is, the power distribution determining unit 31 controls the power supply control unit 41 to control power distribution so that the power generated by the solar cell 16 is supplied to the vehicle storage battery 26. In the present embodiment, the power distribution control unit 41 controls the power supply control unit 41 so that the proportion of the power supplied to the vehicle storage battery 26 increases as the vehicle storage battery expected charge amount S increases. Further, the charging of the vehicle storage battery 26 by the power supply control unit 41 is controlled so as to be stopped when the charging amount of the vehicle storage battery 26 is charged by a predetermined amount. At this time, the electric power distribution determination unit 31 knows the estimated storage amount S for the vehicle storage battery. Therefore, it is not necessary to instantaneously charge the vehicle storage battery 26 with the power generated by the solar battery 16, and only a part of the power generated by the solar battery 16 may be charged. As a result, it is possible to secure the amount of power necessary for charging the vehicle storage battery 26 out of the generated power of the solar battery 16 and to allow the vehicle storage battery 26 to be charged gently.

  In step 208, it is determined by the power distribution determination unit 31 whether or not the predicted solar power generation amount T is larger than the vehicle storage battery expected charge amount S. If the determination is negative, the process proceeds to step 210 and affirmed. If YES, go to step 212.

  In step 210, the electric power stored in the residential storage battery 20 is supplied to the vehicle storage battery 26 and the residential load (distribution panel 22), and the process proceeds to step 236. That is, the power distribution determining unit 31 controls the power supply control unit 41 to control the power distribution so that the power stored in the residential storage battery 20 is supplied to the vehicle storage battery 26 and the switchboard 22.

  In step 212, surplus power obtained by subtracting the vehicle storage battery predicted charge amount S from the predicted photovoltaic power generation amount T is supplied to the house load, and the process proceeds to step 214. That is, when the power distribution determining unit 31 controls the power supply control unit 41, surplus power (TS) obtained by subtracting the vehicle storage battery predicted charge amount S from the predicted solar power generation amount T is supplied to the switchboard 22. To distribute power.

  In step 214, the house load J is calculated, and the process proceeds to step 216. For example, the housing load monitoring unit 38 monitors the power supplied from the switchboard 22, outputs the monitoring result to the power distribution determining unit 31, and the power distribution determining unit 31 calculates the housing load J from the housing load monitoring unit 38. Based on the obtained monitoring result, the average amount of power supplied to the switchboard 22 is calculated.

  In step 216, it is determined by the power distribution determination unit 31 whether or not the predicted photovoltaic power generation amount T is larger than the power amount obtained by adding the vehicle storage battery predicted charge amount S and the house load J, and the determination is denied. If yes, then go to Step 218; if yes, go to Step 220.

  In step 218, the electric power of the residential storage battery 20 is supplied to the residential load, and the process proceeds to step 236. That is, the power distribution determining unit 31 controls the power supply control unit 41 to control power distribution so that the power stored in the residential storage battery 20 is supplied to the switchboard 22.

  On the other hand, in step 220, surplus power obtained by subtracting the vehicle storage battery expected charge amount S and the house load J from the expected photovoltaic power generation amount T is supplied to the house storage battery 20, and the process proceeds to step 222. That is, when the power distribution determination unit 31 controls the power supply control unit 41, surplus power (TSJ) obtained by subtracting the vehicle storage battery expected charge amount S and the house load J from the expected solar power generation amount T is obtained. The distribution of electric power is controlled so as to be supplied to the storage battery 20 for housing. When the power supply control unit 41 supplies power to the heat storage device 24, the power supply control unit 41 calculates an average hot water supply time or hot water supply amount from the daily hot water supply time or hot water supply amount of the heat storage device. The heat storage start time of the heat storage device 24 may be determined from the calculation result, and control may be performed so that electric power is supplied to the heat storage device 24 at the determined heat storage start time.

  In step 222, the necessary heat storage amount N is calculated, and the routine proceeds to step 224. That is, the predicted heat storage amount calculation unit 46 predicts the amount of power consumed by the heat storage device 24 from the usage record of the heat storage device 24 obtained from the heat storage device use result detection unit 48, and outputs the prediction result to the power distribution determination unit 31. . The calculation of the necessary heat storage amount N by the predicted heat storage amount calculation unit 46 stores, for example, the daily usage record of the heat storage device 24 and calculates the average or the like.

  In step 224, it is determined by the power distribution determination unit 31 whether or not the predicted photovoltaic power generation amount T is larger than the power amount obtained by adding the vehicle storage battery predicted charge amount S, the house load J, and the necessary heat storage amount N. If the determination is negative, the process proceeds to step 226. If the determination is affirmative, the process proceeds to step 228.

  In step 226, the electric power of the residential storage battery 20 is supplied to the heat storage device 24, and the process proceeds to step 236. That is, the power distribution determining unit 31 controls the power supply control unit 41 to control the power distribution so that the power stored in the residential storage battery 20 is supplied to the heat storage device 24. When the power supply control unit 41 supplies power to the heat storage device 24, the power supply control unit 41 calculates an average hot water supply time or hot water supply amount from the daily hot water supply time or hot water supply amount of the heat storage device. The heat storage start time of the heat storage device 24 may be determined from the calculation result, and control may be performed so that electric power is supplied to the heat storage device 24 at the determined heat storage start time.

  On the other hand, in step 228, surplus power obtained by subtracting the estimated storage amount S of the vehicle storage battery S, the house load J, and the required heat storage amount N from the expected photovoltaic power generation amount T is supplied to the residential storage battery 20, and the process proceeds to step 230. . That is, when the power distribution determining unit 31 controls the power supply control unit 41, surplus power obtained by subtracting the vehicle storage battery expected charge amount S, the house load J, and the necessary heat storage amount N from the predicted solar power generation amount T ( The distribution of the electric power is controlled such that (TSJN) is supplied to the residential storage battery 20.

  In step 230, the house load H other than noon is calculated, and the process proceeds to step 232. For example, the housing load monitoring unit 38 monitors the power supplied from the switchboard 22, outputs the monitoring result to the power distribution determining unit 31, and the power distribution determining unit 31 calculates the housing load J from the housing load monitoring unit 38. Based on the obtained monitoring results, the average amount of power supplied to the switchboard 22 in a time zone other than noon is calculated.

  In step 232, it is determined whether or not the estimated photovoltaic power generation amount T is greater than the amount of power obtained by adding the vehicle storage battery expected charge amount S, the house load J, the required heat storage amount N, and the house load H other than daytime. If the determination is negative and the determination is negative, the process proceeds to step 234. If the determination is positive, the process proceeds to step 238.

  In Step 234, the electric power of the residential storage battery 20 is supplied to the residential load in the time zone other than the daytime, and the process proceeds to Step 236. That is, the power distribution determining unit 31 controls the power supply control unit 41 in a time zone other than the daytime determined in advance so that the power stored in the residential storage battery 20 is distributed to the switchboard 22. Control.

  In step 236, control is performed so that the residential storage battery 20 is charged with late-night power, and the routine proceeds to step 242. That is, at a predetermined late-night time when the power rate is reduced, the power distribution determination unit 31 controls the power supply control unit 41 so that power is supplied from the commercial power supply 18 to the residential storage battery 20. To do. Thus, the residential storage battery 20 can be charged using late-night power.

  On the other hand, in step 238, the power distribution determination unit 31 determines whether there is surplus power. In the determination, the power distribution determination unit 31 determines whether or not there is surplus power even if the battery is supplied to the vehicle storage battery 26, the house load, the heat storage device 24, and the house storage battery 20, and the determination is affirmed. If yes, then go to Step 240, otherwise go to Step 242.

  In step 240, surplus power is sold and the process proceeds to step 242. That is, the power distribution determining unit 31 controls the power supply control unit 41 to control power distribution so that surplus power generated by the solar cell 16 is supplied to the commercial power supply 18.

  In step 242, the power distribution determining unit 31 determines whether or not the photovoltaic power generation is finished. In the determination, the power distribution determination unit 31 may determine whether or not a predetermined time has come, and the monitoring result of the solar power generation power monitoring unit 42 is distributed via the solar power generation power prediction unit 32. The determination unit 31 may acquire and determine whether or not the power generation by the solar cell 16 is lost. If the determination is negative, the process returns to step 200 and the above-described processing is repeated. If the determination is affirmative, the series of processing ends. In addition, after the power generation by the solar cell 16 is completed, the power stored in the residential storage battery 20 by the power generated by the solar cell 16 or the late-night power is supplied to the building 12, so that economical and environmentally friendly power supply can be achieved. It becomes possible.

  Thus, also in this embodiment, since the electric power generated by the solar cell 16 is preferentially charged to the vehicle storage battery 26, the vehicle storage battery 26 can be reliably charged. As a result, in a home in which a car can be used even in the daytime, the power generated by the solar battery 16 can be used for reliable charging, which is economical.

  Moreover, in this embodiment, the electric power generated by the solar cell 16 is supplied in the order of the vehicle storage battery 26, the house load, the heat storage device 24, and the house storage battery 20. It can be used efficiently without waste.

  In addition, charging of the vehicle storage battery 26, power supply to the house load, power supply to the heat storage device 24, charging of the storage battery 20 and power sale were performed by the power generated by the solar battery 16, respectively. If the vehicle storage battery 26 is charged, the housing load is supplied, the power is supplied to the heat storage device 24, and the housing storage battery 20 is charged, the CO2 emission becomes zero and global warming occurs. The effect which suppresses is high. Moreover, it becomes possible to reduce CO2 emission, so that the supply distribution destination of the solar cell 16 increases.

  In the above embodiment, the supply distribution is controlled so that power is preferentially supplied to the vehicular storage battery 26 in the time zone in which power generation by the solar battery 16 is performed. The supply distribution may be controlled so that the electric power charged in the residential storage battery 20 is preferentially supplied to the vehicle storage battery 26 even during a time period when power generation is not performed.

DESCRIPTION OF SYMBOLS 10 Power supply distribution control apparatus 12 Building 14 Power management apparatus 16 Solar cell 20 Residential battery 21 Residential battery 21 Cable 22 Distribution board 24 Thermal storage device 26 Vehicle storage battery 28 Car 30, 31 Power distribution determination part 32 Photovoltaic power prediction part 34 Residential storage battery Charge amount monitoring unit 36 Vehicle storage battery charge amount prediction unit 38 Residential load monitoring unit 40, 41 Power supply control unit 42 Photovoltaic power monitoring unit 44 Vehicle information acquisition unit 46 Expected heat storage amount calculation unit 48 Thermal storage device usage record detection unit

Claims (12)

Solar cells that generate electricity by sunlight,
A building storage battery that stores the power used in the building;
A connection means for electrically connecting to a vehicle storage battery that is mounted in an automobile and stores electric power for traveling;
When the power generated by the solar cell is distributed and supplied to the power load that consumes power in the building, the storage battery for the building, and the vehicle storage battery connected to the connection means. Control means for controlling to be preferentially supplied to the vehicle storage battery;
A power supply distribution control device.   2. The power supply distribution control device according to claim 1, wherein the control unit controls distribution of the generated power of the solar battery so that a part of the power generated by the solar battery is supplied to the vehicle storage battery. . The vehicle further includes an acquisition means for acquiring the mileage performance of the vehicle including the mileage per day, or the power consumption excluding in-house power generation of the vehicle as information indicating the required power amount of the vehicle,
The said control means controls distribution of the electric power generated by the said solar cell so that the ratio of the electric power supplied to the said storage battery for vehicles increases, so that the said required electric energy amount which the information acquired by the said acquisition means represents increases. The power supply distribution control device according to claim 1 or 2.   The said control means controls distribution of the electric power generation of the said solar cell so that the electric power supply to the said storage battery for vehicles may be stopped when the said storage battery for vehicles is charged by predetermined amount. The power supply distribution control device according to claim 1.   The control means starts supplying power to the vehicle storage battery when the vehicle storage battery connected to the connection means is newly charged or when the charge amount is a predetermined amount or less. The power supply distribution control device according to any one of claims 1 to 4, which is controlled.   The control means distributes the generated power of the solar cell so that the first surplus power obtained by subtracting the charged power for the vehicle storage battery from the generated power of the solar cell is preferentially supplied to the power load. The power supply distribution control device according to any one of claims 1 to 5, which is controlled.   The control means distributes the generated power of the solar cell so that second surplus power obtained by subtracting power required by the power load from the first surplus power is preferentially supplied to the building storage battery. The power supply distribution control device according to claim 6 to be controlled.   The said control means controls distribution of the generated electric power of the said solar cell so that the 3rd surplus electric power which deducted the charging electric power to the said storage battery from the said 2nd surplus electric power is sold. Power supply distribution control device.   The control means performs control so that power is supplied from the building storage battery when the amount of charge of the vehicle storage battery or the amount of power consumed by the power load is not enough for the power generation amount of the solar battery. The power supply distribution control device according to any one of claims 1 to 8.   The power supply distribution control device according to any one of claims 1 to 9, wherein the control unit further controls to charge the building storage battery using nighttime power. It further comprises a heat storage device that stores heat with electric power,
The said control means controls distribution of the generated electric power of the said solar cell so that the 3rd surplus electric power which deducted the charging electric power to the said storage battery from the said 2nd surplus electric power is supplied to the said thermal storage apparatus. The power supply distribution control device according to claim 7.   The control means calculates an average heat storage time or heat storage amount from the daily heat storage time or heat storage amount of the heat storage device, determines the heat storage start time of the heat storage device from the calculation result, and determines the determined heat storage start time The power supply distribution control device according to claim 11, further controlling to supply power to the heat storage device.

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