JP2011172315A - Power supply device and system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply device that prevents a vehicle from running out of power during travelling even if the next travelling distance of the vehicle is long when the power of the vehicle is supplied to power utilization facilities. <P>SOLUTION: The power supply device 3a supplies a surplus power of the vehicle 3 to the power utilization facilities 2, and includes a surplus power calculating means that calculates the amount of surplus power based on the amount of power stored in the vehicle 3 and the amount required for the next travelling of the vehicle. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power supply device and a power supply system.

  Conventionally, when there is a shortage of power in a power facility such as a commercial facility or factory, a power supply that supplies power to the power facility from multiple hybrid electric vehicles parked in the parking lot of the power facility A system is disclosed.

JP 2007-6573 A

  However, in the power supply system described above, the remaining battery capacity of the vehicle is set in advance, and the system supplies the power usage facility with the amount of power exceeding the set value. When the distance is longer than the distance that can be traveled by the capacity, there is a problem that power shortage is likely to occur during traveling of the vehicle.

  Therefore, the present invention has been made to solve the above-described problems, and in supplying the power of the vehicle to the power utilization facility, even if the next travel distance of the vehicle is long, there is a shortage of power during the travel of the vehicle. An object is to provide a power supply device and a power supply system that do not occur.

  In order to solve the above-described problems, the power supply device according to the present invention is a power supply device that supplies surplus power of a vehicle to a power utilization facility, and the amount of power stored in the vehicle and the amount of power required for the next travel of the vehicle. Is provided with surplus power amount calculating means for calculating the amount of surplus power from the above.

  In the above power supply apparatus, by providing surplus power amount calculation means, it is possible to calculate the amount of surplus power from the amount of power stored in the vehicle and the amount of power necessary for the next travel of the vehicle. For this reason, when surplus power of the vehicle is supplied to the power utilization facility, power shortage is less likely to occur during the traveling of the vehicle even if the next traveling distance of the vehicle is long. As a result, the owner of the vehicle can effectively utilize the surplus power of the own vehicle without worrying about power shortage at the time of returning home, for example.

  The power supply apparatus according to the present invention preferably further includes surplus power sales amount setting means for setting the amount of surplus power sold to the power use facility.

  In the above power supply device, surplus power sales amount setting means is further provided, so that surplus power can be sold to the power use facility at an amount desired by the vehicle owner. As a result, the owner of the vehicle can also sell the surplus power of the vehicle at an amount higher than the late-night power charge used for charging the vehicle, for example.

  In the power supply system according to the present invention, in the power supply system that supplies the surplus power of the vehicle to the power use facility, the vehicle that supplies the surplus power is selected based on the sales amount of the surplus power set by the vehicle. It has a configuration.

  In the above power supply system, a power supply facility can purchase surplus power from a vehicle at a lower price by selecting a vehicle that supplies surplus power based on the sales amount of surplus power set by the vehicle. it can. As a result, even if power shortages occur, power-use facilities can receive low-cost power supply from vehicles, so power generation using natural energy such as solar power generation, where output fluctuations are likely to occur due to the influence of the weather, etc. It becomes easier to introduce equipment.

  The present invention provides a power supply device and a power supply system in which power shortage does not occur during traveling of a vehicle even when the next traveling distance of the vehicle is long when supplying the power of the vehicle to a power utilization facility. It becomes possible.

It is a conceptual diagram which shows the electric power supply system which concerns on 1st embodiment of this invention. 1 is a schematic configuration diagram of a power supply device according to a first embodiment of the present invention. It is a flowchart which shows the procedure which records the required electric energy of the vehicle in 1st embodiment of this invention. It is a structure schematic diagram of the electric power supply apparatus which concerns on 2nd embodiment of this invention. It is a flowchart which shows the procedure which registers the surplus electric power amount and desired sales amount of a vehicle in a power supply-demand control center in 2nd embodiment of this invention. (A) is the return selection confirmation screen of the vehicle in 2nd embodiment of this invention, (b) is explanatory drawing which shows the desired sales amount input screen of surplus electric power. It is a flowchart which shows the notification procedure of the insufficient electric energy of the electric power utilization facility in 2nd embodiment of this invention. It is a flowchart which shows the supply vehicle determination procedure of the electric power supply-and-demand control center in 2nd embodiment of this invention.

  Embodiments of the present invention will be described below.

(First embodiment)
FIG. 1 is a conceptual diagram showing a power supply system 3a according to the first embodiment of the present invention. The power supply system 10 includes a power supply and demand control center 1, a power use facility 2, and a vehicle 3 that is a power supply device 3a.

  The power supply / demand control center 1 (hereinafter sometimes referred to as “center 1”) has a function of adjusting the power supply / demand between the power use facility 2 and the vehicle 3. For example, when a power shortage is notified from the power use facility 2 (communication A), a command is transmitted to the vehicle 3 to supply surplus power to the power use facility 2 (communication B).

  The power use facility 2 (hereinafter sometimes referred to as “facility 2”) includes the amount of power predicted to be necessary in the facility 2 (required power amount) and the amount of power available in the facility 2 (available power). A function to periodically grasp the amount). The facility 2 may be any facility that uses electric power, and may be, for example, a commercial facility, an office building, or a factory.

  For example, the facility 2 monitors the required power amount and the available power amount in the facility 2 every hour, and if it is found that the required power amount exceeds the available power amount, the power shortage in the center 1 The amount is notified (communication A).

  Here, the power that can be used in the facility 2 may be grid power, or may be generated by a private power plant provided in the facility 2, but the use of natural energy and the reduction of carbon dioxide emissions can be reduced. From the viewpoint of promotion, it is also preferable that the power is solar power or wind power. Power generation by natural energy such as solar power generation or wind power generation is likely to cause fluctuations in output due to weather or the like. However, in the power supply system 10, surplus power can be supplied from the vehicle 3 as a power supply device. It is possible to actively introduce photovoltaic power generation or wind power generation into the facility 2.

  The vehicle 3 also has a role of a power supply device 3a that supplies surplus power to the facility 2, and has a function of transmitting surplus power to the facility 2 (power transmission C) based on a command (communication B) from the center 1. Since the vehicle 3 needs to store power in the vehicle 3 until surplus power is supplied to the facility 2, an electric vehicle or a hybrid vehicle having a large storage capacity is preferable.

  In order for the vehicle 3 to supply surplus power to the facility 2, for example, the facility 2 and the vehicle 3 may be connected by a distribution line, and the voltage may be adjusted by a voltage conversion device or the like provided in the middle of the distribution path. Good. Further, power may be transmitted from the vehicle 3 to the facility 2 by wireless energy such as microwaves. In order to reduce the power transmission loss, the vehicle 3 is preferably located as close as possible to the facility 2, for example, preferably stopped in the parking lot of the facility 2.

  FIG. 2 shows a schematic configuration diagram of the power supply device 3a according to the first embodiment of the present invention. As shown in FIG. 2, the power supply device 3 a (vehicle 3) includes an ECU (Electric Control Unit) 20, and the ECU 20 is connected to the battery remaining amount display unit 11, the navigation system 12, and the communication unit 13. . The ECU 20 includes a necessary power amount grasping unit 14, a surplus power amount calculating unit 15, and a surplus power supply determining unit 16, and is also connected to the surplus power supply unit 17.

  The battery remaining amount display unit 11 has a function of displaying the amount of power (battery remaining amount) stored in the battery of the vehicle 3.

  The navigation system 12 has a function of guiding the current position of the vehicle 3 and a destination. The navigation system 12 can specify the position of the vehicle 3 by, for example, a GPS (Global Positioning System) function and display the position on the in-vehicle monitor. The destination of the next travel of the vehicle 3 can also be specified by having the owner of the vehicle 3 select, for example, whether or not he / she is at home using an in-vehicle monitor.

  The communication unit 13 has a function of transmitting and receiving communication with the outside of the vehicle 3, and can receive, for example, a power supply instruction (communication B) from the facility 2. Further, the surplus power amount of the vehicle 3 and the surplus power desired sales amount can be transmitted to the center 1 (communication D). In communication such as communication A to D, any means capable of communication can be used.

  The required power amount grasping unit 14 has a function of grasping a necessary power amount when the vehicle 3 travels next time. The necessary power amount grasping unit 14 is necessary for the next traveling from the traveling data recorded in the ECU by confirming, for example, whether or not the next traveling destination of the vehicle 3 is the home E in the navigation system 12. Can grasp the amount of power.

  The surplus power amount calculation unit 15 has a function of calculating surplus power of the vehicle 3. For example, the surplus power amount calculation unit 15 subtracts the power amount necessary for the next travel ascertained by the required power amount grasping unit 14 from the remaining battery amount displayed by the remaining battery amount display unit 11, for example. Can be calculated. As for the surplus power amount, it is also preferable to estimate a large amount of power necessary for the next traveling so that the vehicle does not have a power shortage during the next traveling.

  The surplus power supply determination unit 16 has a function of determining whether or not surplus power of the vehicle 3 is supplied to the outside (facility 2). The surplus power supply determination unit 16 obtains the surplus power amount calculated by the surplus power amount calculation unit 15, and supplies surplus power to the facility 2 based on the supply command from the center 1 received by the communication unit 13. Determine and instruct the surplus power supply unit 17 to supply. The surplus power supply determination unit 16 can also instruct the surplus power supply unit 17 to stop supplying power when the surplus power supply unit 17 supplies predetermined surplus power to the facility 2.

  The surplus power supply unit 17 has a function of supplying surplus power of the vehicle 3 to the outside (facility 2). As a surplus power supply method, as described above, for example, the surplus power may be supplied through a distribution line, or may be transmitted by wireless energy such as microwaves.

  FIG. 3 is a flowchart showing a procedure for recording the required power amount of the vehicle 3 in the first embodiment of the present invention. The required power amount is grasped and recorded by the necessary power grasping unit 14. For example, in a case where the owner of the vehicle 3 regularly makes a round trip to the facility 2 using the vehicle 3, when the owner starts the vehicle 3 when returning from the facility 2 to the home with the vehicle 3, As shown, the navigation system 12 determines whether or not the current location of the vehicle 3 is the facility 2 in S2 by a GPS function or a screen selection by the owner to the in-vehicle monitor. If the current location of the vehicle 3 is the facility 2, the remaining battery level indicated on the remaining battery level display unit 11 is recorded in the ECU in S4. On the other hand, if the current location of the vehicle 3 is not the facility 2, the process ends.

  Next, when the vehicle 3 starts to travel (S6) and arrives at the owner's home (S8), whether or not he / she has returned from the facility 2 without taking a detour is stored in the GPS function of the navigation system 12 or in the in-vehicle monitor. It is determined by screen selection by the person (S10). If the owner returns home without taking a detour, the remaining battery level at S12 is acquired and the difference from the remaining battery level recorded at the time of departure is returned to the home from the facility 2 to the home. The amount of electric power required is calculated and recorded in the ECU. On the other hand, when returning home after detouring, the process ends without calculating the amount of power required for returning home.

  In S14, it is determined whether or not the amount of power required for the return home is equal to or greater than the maximum amount of power recorded so far. If the amount of power used in the current return home is equal to or greater than the maximum value thus far, the current required power amount is set to the maximum value (S16). In addition, the recorded average value (average power amount) of power necessary for returning home is updated using the current power amount (S18). On the other hand, if it is less than the maximum value so far in S14, the processing ends without setting and updating.

  As described above, according to the power supply device 3a according to the first embodiment of the present invention, when the surplus power of the vehicle 3 is supplied to the facility 2, even if the next travel distance of the vehicle 3 is long, It is possible to provide a power supply device that does not cause power shortage during traveling.

(Second embodiment)
In FIG. 4, the structure schematic diagram of the electric power supply apparatus 3b which concerns on 2nd embodiment of this invention is shown. As illustrated in FIG. 4, the power supply device 3 b (vehicle 3) includes a surplus power sales amount setting unit 18 in addition to the configuration of the first embodiment (power supply device 3 a) illustrated in FIG. 2.

  The surplus power sales amount setting unit 18 has a function of setting an amount for selling surplus power of the vehicle 3 to the outside (facility 2). The sales amount of surplus power is set by inputting a desired amount by the owner of the in-vehicle monitor using the navigation system 12, for example. The set sales amount of surplus power is registered in the center 1 via the communication unit 13 (communication D). Further, the set sales amount is recorded in the surplus power supply determination unit 16, and when determining the supply of surplus power, for example, it is determined whether or not the sales amount is appropriate as compared with the late-night power charge when charging at night. You can also

  FIG. 5 is a flowchart showing a procedure for registering the surplus power amount and the desired sales amount of the vehicle 3 in the power supply and demand control center 1 in the second embodiment of the present invention. First, when the vehicle 3 is activated and travel is started (S20), whether or not the current location is the facility 2 is determined in S22 using, for example, the navigation system 12 as described above. If the current location is the facility 2, the amount of power remaining in the battery is recorded in the ECU in S24. On the other hand, if the current location is not the facility 2, the process ends.

  Next, in S26, for example, “Do you plan to go straight home today” is displayed on the in-car monitor screen, and it is determined whether or not “Yes” is pressed by the owner D of the vehicle C (S28). When “Yes” is pressed, an amount of, for example, 1.2 times the maximum amount of electric power necessary for returning home recorded in the ECU so far is subtracted from the remaining battery amount (S30). Thus, by setting the surplus power amount to be small, it becomes possible to reliably avoid power shortage when the vehicle 3 travels next time. In S32, the set desired sales amount and the surplus power amount are transmitted to the center 1 through the communication unit 13 (communication D), and the process ends.

  Fig.6 (a) is explanatory drawing which shows the return route selection confirmation screen of the vehicle 3 in 2nd embodiment of this invention. FIG. 6A shows a screen for selecting the return path of the vehicle 3. This screen is displayed when the vehicle 3 arrives at the facility 2 in the morning, for example. For example, if the owner of the vehicle 3 selects “Yes” on the selection screen, the required power grasping unit 14 grasps the maximum amount of power up to now until the destination of the next run is the owner's home. The surplus power calculation unit 15 can calculate the surplus power that can be supplied to the facility 2.

  FIG.6 (b) is explanatory drawing which shows the desired sales amount input screen of the surplus electric power of the vehicle 3 in 2nd embodiment of this invention. For example, when the vehicle 3 arrives at the facility 2 in the morning when the vehicle 3 arrives at the facility 2 in the morning, the owner selects “Yes” on the return route selection confirmation screen in FIG. Is done. When the desired amount is input by the holder, the sales amount is set by the surplus power sales amount setting unit 18 and registered in the center 1 via the communication unit 13 (communication D).

  FIG. 7 is a flowchart showing a notification procedure of the insufficient power amount of the facility 2 in the second embodiment of the present invention. In the facility 2, first, in S40, for example, the required power amount and the available power amount in the facility 2 are calculated every hour. In S42, it is determined whether the required power amount is larger than the available power amount. When the required power amount is larger than the available power amount, in S44, for example, the power is connected to the line with the center 1 and the insufficient power amount is notified (communication A).

  FIG. 8 is a flowchart showing the supply vehicle determination procedure of the center 1 in the second embodiment of the present invention. The center 1 that has received the notification of the insufficient power amount from the facility 2 supplies power from the surplus power amount and the desired sales amount of the vehicle group including the vehicle 3 parked in the parking lot in the facility 2 in S50, for example. A vehicle is determined and, for example, a command is transmitted to the vehicle 3 to supply surplus power to the facility 2 (communication B).

  As described above, even when the surplus power of the vehicle 3 is supplied to the facility 2 even by the power supply device according to the second embodiment of the present invention, the vehicle 3 is traveling even if the next travel distance of the vehicle 3 is long. Thus, it is possible to provide a power supply device that does not cause power shortage.

  In addition, the said embodiment does not limit the structure of this invention. For example, the facility 2 may be an apartment house or a detached house. Further, when the facility 2 has the function of the center 1, it is possible to directly instruct the vehicle 3 to supply surplus power without going through the center 1.

  The required power grasping unit 14 has a function of learning, for example, the maximum power amount or the average power amount necessary from the facility 2 to the home, and surplus power based on the necessary power amount learned when the facility 2 is reached. The surplus power amount calculated by the amount calculation unit 15 may be automatically transmitted to the center 1 through the communication unit 13. Moreover, the owner may set manually without having a learning function.

  Further, for example, when there are a plurality of vehicles having the same function as the vehicle 3 in the parking lot of the facility 2 as a power supply device, the parking lot system is equipped with equipment for more efficiently supplying power to the facility 2. The center 1 may instruct the parking lot. Further, the parking lot system may grasp and manage surplus power and sales amount of the vehicle 3 and communicate with the center 1.

  DESCRIPTION OF SYMBOLS 1 ... Electric power supply-and-demand control center, 2 ... Electric power utilization facility, 3 ... Vehicle (3a, 3b ... Electric power supply apparatus), 10 ... Electric power supply system, 11 ... Battery remaining amount display , 12 ... Navigation system, 13 ... Communication unit, 14 ... Required power grasping unit, 15 ... Surplus power calculation unit, 16 ... Surplus power supply determination unit, 17 ... Surplus power supply Part 20 ... ECU, A ... communication (notice of insufficient power), B ... communication (power supply command), C ... power transmission (supplement of surplus power), D ... communication ( Registration of surplus power and desired sales amount).

Claims (3)

In a power supply device that supplies surplus power of a vehicle to a power use facility,
A surplus power amount calculating means for calculating the surplus power amount from the amount of power stored in the vehicle and the amount of power necessary for the next travel of the vehicle.   The power supply apparatus according to claim 1, further comprising surplus power sales amount setting means for setting an amount for selling the surplus power to the power use facility. In a power supply system that supplies surplus power of a vehicle to a power utilization facility,
The vehicle for supplying the surplus power is selected based on the sales amount of the surplus power set by the vehicle.

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