JP2012085406A - On-vehicle charge/discharge apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle charge/discharge apparatus that can supply power from an electric vehicle even to a house without supply control means.SOLUTION: An on-vehicle charge/discharge apparatus 1 includes a power storage section 11, a vehicular power conversion section 12 and a vehicular supply management section 15. The vehicular supply management section 15 controls a power supply operation from the power storage section 11 to the outside of a vehicle 2, and a power supply operation from outside the vehicle 2 to the power storage section 11. When the vehicle 2 mounted with the on-vehicle charge/discharge apparatus 1 is connected, for example, to a house 3, the vehicular supply management section 15 controls a power supply operation from the power storage section 11 to the house 3 and a power supply operation from the house 3 to the power storage section 11. When a commercial power supply is interrupted, for example, at night, when a solar panel 33 cannot generate power, even in the absence of a house supply management section 35 in the house 3, the house 3 can be supplied with power from the vehicle 2 to use power in the vehicle 2.

Description

  The present invention relates to an in-vehicle charging / discharging device mounted on a vehicle.

  Since an electric vehicle such as an electric vehicle includes a chargeable / dischargeable power storage unit, the electric vehicle may be used as a power source for a house (see, for example, Patent Documents 1 and 2). In the electric power system disclosed in Patent Document 1, the supply of electric power from an electric vehicle is managed by an electric power management device in a house. Therefore, when the power supply for supplying power to the house is cut off and power is not supplied to the power management device, the power management device does not operate and the power of the electric vehicle cannot be used.

  On the other hand, in the electric power system disclosed in Patent Document 2, the supply of electric power from the electric vehicle is managed by a supply management device provided in the house separately from the house. As a result, even when a power supply for supplying power to the house fails, power is supplied from the electric vehicle to the house so that the electric power of the electric vehicle can be used.

JP 2008-54439 A Japanese Patent No. 4270236

  In the power system disclosed in Patent Document 2, a power management device is provided in the house separately from the house, and the power supply from the electric vehicle is managed so that the power from the electric vehicle can be used even during a power failure. I have to. However, with the technique disclosed in Patent Document 2, electric power cannot be supplied from an electric vehicle to a house that does not have a supply management device. Therefore, the electric power of the electric vehicle cannot be used in an emergency such as a power failure in a house without a supply management device.

  An object of the present invention is to provide an in-vehicle charging / discharging device that can supply electric power from an electric vehicle even to a house that is not provided with a supply control means for controlling an electric power supply operation such as a supply management device. Is to provide.

  An in-vehicle charging / discharging device of the present invention is an in-vehicle charging / discharging device mounted on a vehicle, and includes an electricity storage unit configured to be able to charge / discharge electric power, and supplies electric power discharged from the electricity storage unit to the outside of the vehicle. Power conversion means for converting electric power supplied from outside the vehicle into electric power that can be charged to the power storage means, and power supply operation from the power storage means to the outside of the vehicle, and And a supply control unit that controls a power supply operation to the power storage unit from the outside of the vehicle.

  According to the in-vehicle charging / discharging device of the present invention, the in-vehicle charging / discharging device includes the power storage unit, the power conversion unit, and the supply control unit, and is mounted on the vehicle. The power storage means is charged with electric power or discharged. The electric power discharged from the electric storage means is converted into electric power that can be supplied to the outside of the vehicle by the electric power conversion means, and is supplied to the outside of the vehicle. Electric power supplied from the outside of the vehicle is converted into electric power that can be charged in the electric storage means by the electric power conversion means, and is supplied to the electric storage means. The power supply operation from the power storage means to the outside of the vehicle and the power supply operation from the outside of the vehicle to the power storage means are controlled by the supply control means.

  Since such an on-vehicle charging / discharging device is provided with such a supply control means, by connecting a vehicle equipped with this on-vehicle charging / discharging device to the house, even for a house where no supply control means is provided, Electric power can be supplied from the vehicle. Regardless of whether or not the supply control means is provided in the house, it is possible to supply electric power from the vehicle to the house and use the electric power of the vehicle in an emergency such as a power failure. Moreover, electric power can be distributed among several vehicles by connecting the several vehicle by which the vehicle-mounted charging / discharging apparatus of this invention is mounted. Further, by connecting a vehicle equipped with the on-vehicle charging / discharging device of the present invention to another vehicle, it is possible to supply power to the other vehicle and charge the other vehicle.

It is a figure which shows the structure of the vehicle-mounted charging / discharging apparatus 1 which is one Embodiment of this invention. It is a flowchart which shows the procedure of the process of the vehicle supply management part 15 in the management part judgment mode at the time of connecting the vehicle 2 and the house 3. It is a flowchart which shows the procedure of the process of the vehicle supply management part 15 in the operation part instruction | indication mode at the time of connecting the vehicle 2 and the house 3. It is a figure which shows the state which connected the some vehicle 2 carrying the vehicle-mounted charging / discharging apparatus 1 shown in FIG. It is a flowchart which shows the procedure of the process of the vehicle supply management part 15 in the management part judgment mode at the time of connecting the some vehicle 2. FIG. It is a flowchart which shows the procedure of the process of the vehicle supply management part 15 in the operation part instruction | indication mode at the time of connecting the some vehicle 2. FIG. It is a figure which shows the state which connected the house 5 and the vehicle 2 in which the supply control means is not provided. It is a flowchart which shows the procedure of the process of the vehicle supply management part 15 in the operation part instruction | indication mode at the time of connecting the house 5 and the vehicle 2 which are not provided with a supply control means. It is a figure which shows the state which connected the vehicle 2 equipped with the vehicle-mounted charging / discharging apparatus 1 and the vehicle 6 only for charge. It is a flowchart which shows the procedure of the process of the vehicle supply management part 15 in the operation part instruction | indication mode at the time of connecting the charging / discharging vehicle 2 and the vehicle 6 only for charge.

  FIG. 1 is a diagram showing a configuration of an in-vehicle charging / discharging device 1 according to an embodiment of the present invention. In FIG. 1, the vehicle 2 in which the vehicle-mounted charging / discharging device 1 is mounted and the house 3 to which the vehicle 2 is connected are shown together. In the example illustrated in FIG. 1, the house 3 corresponds to a connection target to which the vehicle 2 is connected. The vehicle 2 is an electric vehicle equipped with a power storage unit 11 as a DC power source. The vehicle 2 is a hybrid vehicle in the present embodiment. More specifically, the vehicle 2 is a plug-in hybrid vehicle that can be charged by receiving power from an external power source such as a household outlet.

  The vehicle 2 includes an in-vehicle charging / discharging device 1, a power generation unit 21, and an engine 22. The in-vehicle charging / discharging device 1 includes a power storage unit 11, a vehicle power conversion unit 12, a vehicle supply management unit 15, a vehicle communication unit 16, a position information acquisition unit 17, and an operation unit 18. Is done. The vehicle power conversion unit 12 includes an AC power generation unit 13 and a DC power generation unit 14. The power generation unit 21 corresponds to power generation means. The engine 22 is a kind of prime mover. The power storage unit 11 corresponds to power storage means. The vehicle power conversion unit 12 corresponds to power conversion means. The vehicle supply management unit 15 corresponds to supply control means. The vehicle communication unit 16 corresponds to a communication unit. The position information acquisition unit 17 corresponds to position information acquisition means.

  The power generation unit 21 generates power, specifically DC power, with the engine 22. The power generation unit 21 supplies the generated DC power to the in-vehicle charging / discharging device 1, specifically, to the power storage unit 11 of the in-vehicle charging / discharging device 1. The power generation unit 21 is realized by a generator, for example.

  The power storage unit 11 is configured to be able to charge and discharge electric power. Specifically, the power storage unit 11 is a DC power source that can be charged and discharged, and is realized, for example, by a secondary battery such as a nickel metal hydride battery or a lithium ion battery. The power storage unit 11 is configured to be able to store electric power generated by the power generation unit 21 by the engine 22. The power storage unit 11 is supplied with power generated by the power generation unit 21 by the engine 22, specifically, DC power. Thereby, the power storage unit 11 is charged.

  The vehicle power conversion unit 12 converts the power discharged from the power storage unit 11 into power that can be supplied to the outside of the vehicle 2, and converts the power supplied from the outside of the vehicle 2 into power that can be charged to the power storage unit 11. Convert. Specifically, the vehicular power conversion unit 12 converts the DC power discharged from the power storage unit 11 into power that can be supplied to the house 3, that is, AC power. Further, the vehicle power conversion unit 12 converts AC power supplied from the house 3 into power that can be charged in the power storage unit 11, that is, DC power.

  The vehicle supply management unit 15 controls the operation of the vehicle power conversion unit 12, thereby supplying power from the power storage unit 11 to the outside of the vehicle 2 and supplying power from the outside of the vehicle 2 to the power storage unit 11. Control the feeding operation. In the example illustrated in FIG. 1, the vehicle supply management unit 15 controls the operation of the vehicle power conversion unit 12 to supply power from the power storage unit 11 to the house 3 and from the house 3 to the power storage unit 11. To control the power supply operation. That is, the vehicle supply management unit 15 manages charging and discharging of the power storage unit 11 via the vehicle power conversion unit 12.

  The house 3 includes a power load 31, a power receiving unit 32, a solar panel 33, a residential power conversion unit 34, a residential supply management unit 35, and a residential communication unit 36. The power load 31 is connected to the power reception unit 32 and the residential power conversion unit 34. The residential power conversion unit 34 is connected to the solar panel 33 via the residential supply management unit 35. The residential communication unit 36 is connected to the residential supply management unit 35. The housing supply management unit 35 controls power supply in the house 3.

  The housing supply management unit 35 stores power status information regarding the power consumed in the house 3, the power supplied to the house 3, and the power generated in the house 3. The power status information includes power consumption information representing the power consumption of the power load 31 in the house 3 as information representing the magnitude of power consumed in the house 3. The power status information includes commercial power information representing the magnitude of the power of the commercial power source supplied to the power receiving unit 32 described later as information representing the magnitude of the power supplied to the house 3. The power status information includes generated power information indicating the power generated by the solar panel 33 (hereinafter sometimes referred to as “generated power”) as information indicating the magnitude of the power generated in the house 3. The power status information such as the power consumption information and the generated power information stored in the residential supply management unit 35 is updated regularly, that is, every time a predetermined time elapses.

  The power load 31 is an electric device used in the house 3, for example, a lighting device. The solar panel 33 is a power supply facility installed in the house 3. The solar panel 33 generates DC power. The direct current power generated by the solar panel 33 is given to the residential power conversion unit 34 via the residential supply management unit 35, converted into alternating current power by the residential power conversion unit 34, and given to the power load 31. It is done.

  The power receiving unit 32 is electrically connected to a power transmission line (not shown). The power receiving unit 32 is a connection unit for drawing the power transmission line into the house 3. The power transmission line is electrically connected to a power grid (not shown). The power grid is a commercial power system including a plurality of power generation facilities. The power generation facility is, for example, a thermal power generation facility, a hydropower generation facility, a nuclear power generation facility, a wind power generation facility, or a solar power generation facility. Commercial power is supplied to the house 3 from a power grid via a power transmission line. The house 3 can exchange electric power with the power grid via the power transmission line.

  The vehicle 2 is electrically connected to the house 3 via the connection line 41. The connection line 41 is a power line for electrically connecting the vehicle 2 and the house 3. The vehicle 2 can exchange electric power with the house 3 via the connection line 41. Specifically, the vehicle power conversion unit 12 of the vehicle 2 is electrically connected to the power load 31 of the house 3 via the connection line 41. The vehicle 2 can generate AC power by the AC power generation unit 13 of the vehicle power conversion unit 12 and supply the generated AC power to the house 3 via the connection line 41. That is, the vehicle 2 can function as one power source for the house 3. Further, the vehicle 2 can receive supply of AC power from the house 3 via the connection line 41, generate DC power by the DC power generation unit 14 of the vehicle power conversion unit 12, and charge the power storage unit 11. it can.

  When the vehicle 2 is electrically connected to the house 3 via the connection line 41, the vehicle supply management unit 15 includes the vehicle 2 (hereinafter referred to as “own vehicle”) 2 on which the in-vehicle charging / discharging device 1 is mounted and the house. 3 is measured (hereinafter sometimes referred to as “electric power between the vehicle 2 and the house 3”). Specifically, the vehicle supply management unit 15 measures power consumption for charging the host vehicle 2 and discharge power from the host vehicle 2 as power between the host vehicle 2 and the house 3. . The power consumption for charging the host vehicle 2 is power that is supplied from the house 3 and consumed to charge the power storage unit 11 of the host vehicle 2. The discharged power from the host vehicle 2 is power that is discharged from the power storage unit 11 of the host vehicle 2 and supplied to the house 3. In the present embodiment, the vehicle supply management unit 15 uses the power sensor (not shown) interposed in the connection line 41 that connects the host vehicle 2 and the house 3 to generate the electric power generated in the connection line 41. Based on the measured power value, the power between the host vehicle 2 and the house 3 is obtained.

  The vehicle 2 is communicably connected to the house 3 via the communication line 42. The communication line 42 is a power line for connecting the vehicle 2 and the house 3 so that communication is possible. Specifically, the vehicle communication unit 16 of the vehicle 2 is communicably connected to the housing communication unit 36 of the house 3 via the communication line 42. The vehicle 2 and the house 3 mutually transmit and receive information by power line communication (abbreviation: PLC) via the communication line 42. The vehicle 2, the house 3, the connection line 41, the communication line 42, the power grid, and the power transmission line constitute an electric power system.

  The vehicle 2 and the connection line 41 are configured to be detachable. For example, a convex connector is attached to one end of the connection line 41, and a concave connector into which the convex connector is fitted is provided in the vehicle 2. By fitting these connectors, the vehicle 2 is connected to the connection line. 41 is connected. Similarly, the house 3 and the connection line 41, the vehicle 2 and the communication line 42, and the house 3 and the communication line 42 are configured to be detachable.

  The vehicle supply management unit 15 acquires power status information of the house 3, specifically, power consumption information, commercial power information, and generated power information, via the vehicle communication unit 16. The vehicle supply management unit 15 uses the vehicle power based on the power status information of the house 3 acquired by the vehicle communication unit 16 and the power between the host vehicle 2 and the house 3 measured as described above. The operation of the conversion unit 12 is controlled. For example, the vehicle supply management unit 15 performs the power supply operation from the power storage unit 11 to the home 3 and the power supply from the home 3 to the power storage unit 11 based on the power status information of the home 3 acquired by the vehicle communication unit 16. It is determined which of the power supply operations is to be performed.

  In response to an instruction from the vehicle supply management unit 15, the vehicle power conversion unit 12 extracts DC power stored in the power storage unit 11, and generates AC power from the extracted DC power by the AC power generation unit 13. The vehicle power converter 12 supplies the generated AC power to the house 3 via the connection line 41. Further, the vehicle power conversion unit 12 receives supply of AC power from the house 3 according to an instruction from the vehicle supply management unit 15, and generates DC power from the AC power supplied from the house 3 by the DC power generation unit 14. To the power storage unit 11.

  The position information acquisition unit 17 acquires current position information indicating the current position of the vehicle 2. The position information acquisition unit 17 is realized by, for example, GPS (Global Positioning System). Based on the current position information acquired by the position information acquisition unit 17, the vehicle supply management unit 15 determines the frequency and voltage of power supplied from the power storage unit 11 to the house 3 to be connected to which the vehicle 2 is connected. The vehicle power conversion unit 12 is controlled so as to be selected. Specifically, the vehicle supply management unit 15 uses the AC power generation unit 13 of the vehicle power conversion unit 12 based on the current position information acquired by the position information acquisition unit 17. To control. More specifically, the vehicle supply management unit 15 generates the vehicle power so that the AC power generation unit 13 generates AC power having the same frequency and voltage as the commercial power supplied in the area including the current position of the vehicle 2. The converter 12 is controlled.

  More specifically, when the current position of the vehicle 2 is included in a region where the frequency of the commercial power source is 50 Hz, for example, Tokyo, Japan, the vehicle supply management unit 15 generates the AC power generation unit 13. The vehicle power converter 12 is controlled so that the frequency of the AC power is 50 Hz. When the current position of the vehicle 2 is included in an area where the frequency of the commercial power source is 60 Hz, for example, Osaka, Japan, the vehicle supply management unit 15 sets the frequency of the AC power generated by the AC power generation unit 13 to 60 Hz. The vehicle power conversion unit 12 is controlled so that

  The operation unit 18 is configured by, for example, a liquid crystal display provided with a touch panel, and is operated by a user. The user operates the operation unit 18 to start charging the power storage unit 11 of the vehicle 2 (hereinafter sometimes referred to as “charging of the vehicle 2”), to stop charging the vehicle 2, and the vehicle 2. An instruction to start the discharge of the power storage unit 11 (hereinafter sometimes referred to as “discharge of the vehicle 2”) or an instruction to stop the discharge of the vehicle 2 can be input. Further, the user can input an instruction to start either charging or discharging of the vehicle 2 (hereinafter, also referred to as “charging / discharging start instruction”) by operating the operation unit 18.

  The user can set the operation mode of the vehicle supply management unit 15 by operating the operation unit 18. The operation mode of the vehicle supply management unit 15 includes an operation unit instruction mode for charging and discharging the vehicle 2 based on a user instruction input from the operation unit 18, and charging of the vehicle 2, or vehicle 2 The vehicle supply management unit 15 determines whether or not to discharge the vehicle 2 and includes a management unit determination mode for charging and discharging the vehicle 2. The user operates the operation unit 18 to set the operation mode of the vehicle supply management unit 15 to the operation unit instruction mode or the management unit determination mode.

  FIG. 2 is a flowchart illustrating a processing procedure of the vehicle supply management unit 15 in the management unit determination mode when the vehicle 2 and the house 3 are connected. Each process of the flowchart shown in FIG. 2 is executed by the vehicle supply management unit 15. When the operation unit 18 is operated by the user to set the management unit determination mode and the vehicle 2 is connected to the house 3 via the connection line 41 and the communication line 42, the vehicle supply management unit 15 is shown in FIG. The processing of the flowchart shown is started, and the process proceeds to step a1.

  The vehicle supply management unit 15 periodically transmits an identification signal including identification information indicating the host vehicle 2 to the communication line 42 by the vehicle communication unit 16. When the communication line 42 is connected to the communication partner, here, the communication unit 36 for the house 3, the identification signal transmitted from the vehicle communication unit 16 to the communication line 42 is transmitted via the communication line 42. Received by unit 36. When the housing supply management unit 35 of the house 3 receives the identification signal transmitted from the vehicle communication unit 16 of the vehicle 2 by the housing communication unit 36, the housing supply management unit 35 generates an ID reception signal indicating that the identification signal has been received. The data is transmitted to the vehicle communication unit 16 of the vehicle 2 by the communication unit 36. The vehicle supply management unit 15 of the vehicle 2 determines that the vehicle 2 is connected to the house 3 when the vehicle communication unit 16 receives the ID reception signal transmitted from the house communication unit 36 of the house 3. In this way, the vehicle supply management unit 15 detects that the vehicle 2 is connected to the house 3. Here, an example in which an identification signal including identification information is periodically transmitted has been described. However, an identification signal including identification information may be transmitted in response to a change in received voltage due to connection of the connection line 41.

  In step a1, the vehicle supply management unit 15 charges the power storage unit 11 via a communication line of a communication network (not shown) mounted on the vehicle 2 such as a controller area network (abbreviation: CAN). An SOC indicating a state (State Of Charge) is acquired. The SOC is the ratio of the remaining capacity (Ah), which is the amount of electricity being charged, to the full charge capacity (Ah), which is the maximum amount of electricity that can be charged in the power storage unit 11, according to the following equation (1). Desired. Hereinafter, the state in which electricity of the fully charged capacity is charged in the power storage unit 11 is referred to as a “fully charged state”. When the SOC is acquired, the vehicle supply management unit 15 proceeds to step a2.

SOC (%) = remaining capacity (Ah) / full charge capacity (Ah) × 100 (1)
In step a <b> 2, the vehicle supply management unit 15 stores the power consumption stored in the housing supply management unit 35 installed in the house 3 from the housing communication unit 36 of the house 3 via the vehicle communication unit 16. Get information and generated power information. When the power consumption information and the generated power information are acquired, the vehicle supply management unit 15 proceeds to step a3.

  In step a3, the vehicle supply management unit 15 uses the power consumption of the power load 31 in the house 3 represented by the power consumption information acquired in step a2 in the house 3 represented by the generated power information acquired in step a2. It is determined whether or not the generated power of the solar panel 33 is smaller. In addition, vehicle supply management unit 15 determines whether or not the SOC of power storage unit 11 acquired in step a1 is smaller than a predetermined threshold value. When the vehicle supply management unit 15 determines that the power consumption of the power load 31 in the house 3 is smaller than the generated power of the solar panel 33 and determines that the SOC of the power storage unit 11 is smaller than the threshold, step a4. Otherwise, the process proceeds to step a5.

  When the process proceeds from step a3 to step a4, the vehicle supply management unit 15 starts charging the power storage unit 11 in step a4. Specifically, the vehicle supply management unit 15 instructs the vehicle power conversion unit 12 to receive supply of AC power from the house 3, and generates DC power from the supplied AC power by the DC power generation unit 14. And stored in the power storage unit 11. As a result, the power storage unit 11 is charged. When charging of power storage unit 11 is started, vehicle supply management unit 15 returns to step a1 and repeats the above-described processing. When the process returns to step a1 from step a4 and the process of step a1 to step a3 is executed and then the process proceeds to step a4, the vehicle supply management unit 15 continues to charge the power storage unit 11 in step a4. .

  When the process proceeds from step a3 to step a5, the vehicle supply management unit 15 determines whether the power consumption of the power load 31 in the house 3 is larger than the generated power of the solar panel 33 in step a5. In addition, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 acquired in step a1 is greater than the above-described threshold value. When the vehicle supply management unit 15 determines that the power consumption of the power load 31 in the house 3 is greater than the generated power of the solar panel 33 and determines that the SOC of the power storage unit 11 is greater than the threshold, step a6. Otherwise, the process proceeds to step a7.

  When the process proceeds from step a5 to step a6, the vehicle supply management unit 15 starts discharging the power storage unit 11 to the house 3 side in step a6. Specifically, the vehicle supply management unit 15 instructs the vehicle power conversion unit 12 to generate AC power from the DC power stored in the power storage unit 11 by using the AC power generation unit 13, and generates the AC power. Is supplied to the house 3 via the connection line 41. As a result, the power storage unit 11 is discharged.

  At this time, the vehicle supply management unit 15 controls the frequency and voltage of the AC power generated by the AC power generation unit 13 of the vehicle power conversion unit 12 based on the current position information acquired by the position information acquisition unit 17. To do. Specifically, the vehicle supply management unit 15 generates the vehicle power so that the AC power generation unit 13 generates AC power having the same frequency and voltage as the commercial power supplied in the region including the current position of the vehicle 2. The converter 12 is controlled.

  When the discharge of the power storage unit 11 to the house 3 side is started in this way, the vehicle supply management unit 15 returns to step a1 and repeats the above-described processing. After returning from step a6 to step a1 and executing the processes of steps a1 to a5 and then proceeding to step a6, the vehicle supply management unit 15 continues discharging the power storage unit 11 in step a6. .

  When the process proceeds from step a5 to step a7, in step a7, the vehicle supply management unit 15 ends all the processes without charging and discharging the power storage unit 11. When the process proceeds to step a7 after returning to step a1 through step a4 or step a6, in step a7, the vehicle supply management unit 15 stops charging or discharging the power storage unit 11 and ends all the processes. .

  As described above, in the present embodiment, charging and discharging of the power storage unit 11 are controlled by the vehicle supply management unit 15 of the in-vehicle charging / discharging device 1 mounted on the vehicle 2, so that the vehicle 3 is transferred from the house 3 side to the vehicle 2. The power supply and the power supply from the vehicle 2 to the house 3 side are managed. As a result, even if power is not supplied to the residential supply management unit 35 due to a power failure or the like and the residential supply management unit 35 stops operating, power can be supplied from the vehicle 2 to the home 3.

  Therefore, for example, even when the commercial power supply is interrupted at night when the solar panel 33 cannot generate power, and neither the power supplied from the solar panel 33 nor the power of the commercial power supply can be used, power is supplied from the vehicle 2 to the house 3. The electric power of the vehicle 2 can be used by supplying the electric power.

  Moreover, in this Embodiment, the vehicle supply management part 15 acquires the electric power condition information of the house 3 via the vehicle communication part 16 in step a2, as shown in above-mentioned FIG. Then, based on the acquired power status information, the vehicle supply management unit 15 supplies power from the house 3 to the power storage unit 11 in step a3 and step a5, that is, charging operation to the power storage unit 11, and power storage unit It is determined which of the power supply operation from 11 to the house 3, that is, the discharge operation from the power storage unit 11 is to be performed.

  Therefore, by simply connecting the vehicle 2 and the house 3, the power storage unit 11 can be charged or discharged according to the power consumption state and the generation state of the house 3. That is, since the user does not need to operate the operation unit 18 to instruct to discharge or charge, it is possible to easily transfer power between the vehicle 2 and the house 3.

  Moreover, in this Embodiment, the vehicle supply management part 15 selects the frequency and voltage of the electric power supplied from the electrical storage part 11 to the house 3 based on the current position information acquired by the position information acquisition part 17. The vehicle power converter 12 is controlled. Specifically, the vehicle supply management unit 15 uses the AC power generation unit 13 of the vehicle power conversion unit 12 based on the current position information acquired by the position information acquisition unit 17. To control. Thereby, since the electric power which can be used in the house 3 can be supplied from the vehicle 2, the electric power of the vehicle 2 can be used more reliably in the house 3.

  In the present embodiment, the vehicle 2 includes a power generation unit 21 that generates power using the engine 22, and the power storage unit 11 is configured to be able to store the power generated by the power generation unit 21. Accordingly, the power storage unit 11 can be charged without receiving power supply from the house 3 side. Therefore, when power cannot be generated by the solar panel 33 at the time of a power failure of the commercial power source or at night, power can be continuously supplied from the vehicle 2 to the house 3, so that a period during which power cannot be used in the house 3. Can be made as short as possible.

  The SOC threshold value of the power storage unit 11 used for the determination in step a3 and step a5 shown in FIG. 2 is stored in advance in the vehicle supply management unit 15 when the in-vehicle charging / discharging device 1 is manufactured, for example. However, the vehicle supply management unit 15 may be configured to be able to change the SOC threshold value of the power storage unit 11 based on information input by the user operating the operation unit 18. Specifically, the SOC threshold value of the power storage unit 11 may be changed according to the use plan of the vehicle 2 input by the operation unit 18, for example, the scheduled use date and time and the planned travel distance of the vehicle 2. In this case, the SOC threshold value of power storage unit 11 is obtained according to the following equations (2) and (3).

Required SOC (%) = scheduled travel distance / travelable distance × 100 (2)
Threshold (%) = required SOC (%) × {1- (scheduled use date-current date)
/ (Scheduled use date and time-Date and time when user inputs operation)} (3)
The travelable distance of the expression (2) is the distance that can be traveled by the electric power stored in the power storage unit 11 when the SOC of the power storage unit 11 is 100%, that is, when the power storage unit 11 is fully charged. Say. The required SOC calculated by equation (2) represents the ratio of the amount of electricity required to travel the planned travel distance to the full charge capacity of power storage unit 11.

For example, the date and time when the user inputs an operation, the scheduled use date and time, the current date and time, and the required SOC are
Date and time of operation input by user: September 1st 0:00
Scheduled use date: September 10th, 24:00
Current date: September 8th, 24:00
Required SOC: 100%
In this case, the threshold value is calculated from the equation (3).
Threshold (%) = 100% × (1-2 days / 10 days)
= 100 × (1-1 / 5)
= 100-20
= 80%
It becomes.

  Thus, according to Equation (3), the threshold is calculated so as to approach the required SOC when the scheduled use date approaches.

  FIG. 3 is a flowchart showing a processing procedure of the vehicle supply management unit 15 in the operation unit instruction mode when the vehicle 2 and the house 3 are connected. Each process of the flowchart shown in FIG. 3 is executed by the vehicle supply management unit 15. Since the flowchart shown in FIG. 3 is similar to the flowchart of the management unit determination mode shown in FIG. 2 described above, the same steps are denoted by the same step numbers and common description is omitted.

  In the management unit determination mode shown in FIG. 2 described above, the vehicle supply management unit 15 starts the processing of the flowchart shown in FIG. 2 when the vehicle 2 is connected to the house 3 and proceeds to step a1. On the other hand, in the operation unit instruction mode, when the user operates the operation unit 18 to set the operation unit instruction mode and the vehicle 2 is connected to the house 3, the vehicle supply management unit 15 Is started, and the process proceeds to step b1.

  In step b <b> 1, the vehicle supply management unit 15 determines whether a charge / discharge start instruction is input from the operation unit 18. When the vehicle supply management unit 15 determines that a charge / discharge start instruction has been input, the vehicle supply management unit 15 proceeds to step a1 and executes each processing of step a1 to step a6 in the same manner as the management unit determination mode shown in FIG. To do.

  In the operation unit instruction mode, the vehicle supply management unit 15 proceeds to step b2 after the process of step a4 and the process of step a6. In step b <b> 2, the vehicle supply management unit 15 determines whether a charge / discharge stop instruction is input from the operation unit 18. When the vehicle supply management unit 15 determines that the charge / discharge stop instruction has been input, the vehicle supply management unit 15 proceeds to step a7, and in step a7, similarly to the management unit determination mode, without charging and discharging the power storage unit 11, or The charging or discharging of the power storage unit 11 is stopped, and all the processes are finished. If vehicle supply management unit 15 determines in step b2 that the charge / discharge stop instruction has not been input, it returns to step a1 and repeats the process.

  As described above, in the operation unit instruction mode, when it is determined in step b1 that a charge / discharge start instruction is input from the operation unit 18, the process proceeds to step a1 and charging of the power storage unit 11 is performed in steps a1 to a6. Or discharge is performed. If it is determined in step b2 that a charge / discharge stop instruction has been input from the operation unit 18, the process proceeds to step a7 where the power storage unit 11 is not charged or discharged, or the power storage unit 11 is charged or discharged. Is stopped, and all processing ends.

  Thus, the user can start charging or discharging the power storage unit 11 at a desired timing by operating the operation unit 18 and inputting a charge / discharge start instruction. Further, the user can stop charging or discharging of the power storage unit 11 at a desired timing by operating the operation unit 18 and inputting a charge / discharge stop instruction. Therefore, for example, when the power storage unit 11 is being discharged, by inputting a charge / discharge stop instruction before the SOC of the power storage unit 11 reaches the threshold value, the discharge of the power storage unit 11 is stopped. The remaining capacity can be adjusted to a desired value.

  FIG. 4 is a diagram showing a state in which a plurality of vehicles 2 equipped with the in-vehicle charging / discharging device 1 shown in FIG. 1 are connected. In FIG. 4, the position information acquisition unit 17, the power generation unit 21, and the engine 22 illustrated in FIG. 1 are omitted for easy understanding. FIG. 4 shows a case where three vehicles 2 are connected. In the following, when the three vehicles 2 are shown separately, they are referred to as the first vehicle 2a, the second vehicle 2b, and the third vehicle 2b, and when the three vehicles 2 are shown without distinction, the vehicles 2 Collectively.

  The first to third vehicles 2 a to 2 c are electrically connected via a connection line 41. Specifically, the vehicle power conversion units 12 of the first to third vehicles 2 a to 2 c are electrically connected via the connection line 41. The first to third vehicles 2 a to 2 c can exchange power, specifically, AC power via the connection line 41. The three connection lines 41 drawn from the first to third vehicles 2a to 2c are connected via a connector (not shown).

  The first to third vehicles 2 a to 2 c are communicably connected via the communication line 42. Specifically, the vehicle communication units 16 of the first to third vehicles 2 a to 2 c are connected to be communicable via the communication line 42. The first to third vehicles 2a to 2c transmit and receive information by PLC via the communication line 42. The three communication lines 42 drawn from the first to third vehicles 2a to 2c are connected via a connector (not shown).

  When the vehicle supply management unit 15 of each vehicle 2 is connected to another vehicle 2, the input / output power of the host vehicle 2, that is, the power input to the host vehicle 2 and the power output from the host vehicle 2 Measure. The electric power input to the host vehicle 2 is power consumption for charging the host vehicle 2, and more specifically, is supplied from another vehicle 2 to charge the power storage unit 11 of the host vehicle 2. This is the power consumed. The power output from the host vehicle 2 is the discharged power from the host vehicle 2, and more specifically, is the power that is discharged from the power storage unit 11 of the host vehicle 2 and supplied to the other vehicle 2. The vehicle supply management unit 15 measures the power generated in the connection line 41 by a power sensor (not shown) interposed in the connection line 41 drawn from the host vehicle 2, and based on the measured power value. Thus, the input / output power of the host vehicle 2 is obtained.

  In addition, the vehicle supply management unit 15 is configured to use the power related to the power consumed by the other vehicle 2, the power supplied to the other vehicle 2, and the power generated by the other vehicle 2 via the vehicle communication unit 16. Get status information. The power status information includes power consumption information indicating the magnitude of power consumption in the other vehicle 2 and the SOC of the power storage unit 11 of the other vehicle 2. The SOC of the power storage unit 11 of another vehicle is the magnitude of power consumed by the other vehicle 2, the magnitude of power supplied to the other vehicle 2, and the magnitude of power generated by the other vehicle 2. Reflect.

  The vehicle supply management unit 15 is based on the power status information of the other vehicle 2 acquired by the vehicle communication unit 16 and the input / output power of the host vehicle 2 measured as described above. 12 operations are controlled. For example, the vehicle supply management unit 15 performs the power supply operation from the own vehicle 2 to the other vehicle 2 and the other vehicle 2 based on the power status information of the other vehicle 2 acquired by the vehicle communication unit 16. It is determined which operation of supplying power from the vehicle to the host vehicle 2 is performed.

  FIG. 5 is a flowchart showing a processing procedure of the vehicle supply management unit 15 in the management unit determination mode when a plurality of vehicles 2 are connected. Each process of the flowchart shown in FIG. 5 is respectively performed by the vehicle supply management unit 15 of the first to third vehicles 2a to 2c. When the operation unit 18 is operated by the user and the management unit determination mode is set, and the own vehicle 2 is connected to another vehicle 2 (hereinafter also referred to as “connection partner vehicle”) as a connection partner, the vehicle The supply management unit 15 starts the process of the flowchart shown in FIG. 5 and proceeds to step c1. For example, when the host vehicle 2 is the first vehicle 2a, the connection partner vehicles 2 are the second vehicle 2b and the third vehicle 2c. The connection partner vehicle 2 corresponds to a connection target.

  The vehicle supply management unit 15 periodically transmits an identification signal including identification information indicating the host vehicle 2 to the communication line 42 by the vehicle communication unit 16. When the communication line 42 is connected to a communication partner, here, the vehicle communication unit 16 of another vehicle 2, an identification signal transmitted from the vehicle communication unit 16 of the host vehicle 2 to the communication line 42 is transmitted to the communication line 42. Is received by the vehicle communication unit 16 of the other vehicle 2. When the vehicle supply management unit 15 receives the identification signal transmitted from the other vehicle 2 by the vehicle communication unit 16, the vehicle supply management unit 15 transmits the identification signal including the identification information indicating the own vehicle 2 to the other vehicle 2. 2 to the vehicle communication unit 16. When receiving the identification signal transmitted from the other vehicle 2 by the vehicle communication unit 16, the vehicle supply management unit 15 determines that the host vehicle 2 is connected to the other vehicle 2. In this way, the vehicle supply management unit 15 detects that the host vehicle 2 is connected to the connection partner vehicle 2 that is another vehicle. Here, an example in which an identification signal including identification information is periodically transmitted has been described. However, an identification signal including identification information may be transmitted in response to a change in received voltage due to connection of the connection line 41.

  In step c1, the vehicle supply management unit 15 acquires the SOC of the power storage unit 11 of the host vehicle 2 through a communication line of a communication network (not shown) mounted on the vehicle 2 such as CAN. When the SOC is acquired, the vehicle supply management unit 15 proceeds to Step c2.

  In step c <b> 2, the vehicle supply management unit 15 acquires the power status information of the connection partner vehicle 2 via the vehicle communication unit 16. The power status information is information regarding the power consumed by the connection partner vehicle 2 and the power generated by the connection partner vehicle 2. Specifically, the vehicle supply management unit 15 acquires power consumption information indicating power consumption in the connection partner vehicle 2 and the SOC of the power storage unit 11 of the connection partner vehicle 2 as the power status information. When the host vehicle 2 is the first vehicle 2a, the vehicle supply management unit 15 uses the power consumption information of the second vehicle 2b and the third vehicle 2c as the power consumption information of the connection partner vehicle 2 and the SOC of the power storage unit 11, and The SOC of the power storage unit 11 is acquired. When the power consumption information of the connection partner vehicle 2 and the SOC of the power storage unit 11 are acquired, the vehicle supply management unit 15 proceeds to step c3.

  In step c <b> 3, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 of the host vehicle 2 acquired in step c <b> 1 is smaller than the host vehicle threshold value that is predetermined as the SOC threshold value in the host vehicle 2. To do. Further, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 of the connection partner vehicle 2 acquired in step c2 is greater than the partner vehicle threshold value that is predetermined as the SOC threshold value in the connection partner vehicle 2. To do. The vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the host vehicle 2 is smaller than the threshold for the host vehicle, and determines that the SOC of the power storage unit 11 of the connected partner vehicle 2 is greater than the threshold for the partner vehicle. Then, the process proceeds to step c4, and otherwise, the process proceeds to step c5.

  When there are a plurality of connection partner vehicles 2, in step c <b> 3, the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the host vehicle 2 is greater than the threshold for the host vehicle that is predetermined as the SOC threshold in the host vehicle 2. It is determined whether or not there is a connection partner vehicle 2 in which the SOC of the power storage unit 11 is greater than the threshold value for the partner vehicle among the plurality of connection partner vehicles 2. In this case, the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the host vehicle 2 is smaller than the threshold for the host vehicle, and the connected partner vehicle 2 in which the SOC of the power storage unit 11 is larger than the threshold for the partner vehicle. If it is determined that there is, the process proceeds to step c4. Otherwise, the process proceeds to step c5.

  For example, when the host vehicle 2 is the first vehicle 2a, the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the first vehicle 2a is smaller than the threshold for the host vehicle, and the second vehicle 2b and the second vehicle 2a. If it is determined that the SOC of one or both of the three vehicles 2c is greater than the opponent vehicle threshold, the process proceeds to step c4. The vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the first vehicle 2a is equal to or greater than the threshold for the host vehicle, and the SOCs of the power storage units 11 of both the second vehicle 2b and the third vehicle 2c. When it is determined that it is equal to or less than the opponent vehicle threshold, the process proceeds to step c5.

  When the process proceeds from step c3 to step c4, the vehicle supply management unit 15 starts charging the power storage unit 11 of the host vehicle 2 in step c4. Specifically, the vehicle supply management unit 15 instructs the vehicle power conversion unit 12 to use the DC power generation unit 14 to generate DC power from AC power supplied from the connection partner vehicle 2 via the connection line 41. Is generated and stored in the power storage unit 11. As a result, the power storage unit 11 is charged. When charging of power storage unit 11 is started, vehicle supply management unit 15 returns to step c1 and repeats the above-described processing. When returning to step c1 from step c4 and performing the processing of step c1 to step c3 and then proceeding to step c4, the vehicle supply management unit 15 continues charging the power storage unit 11 in step c4.

  When the process proceeds from step c3 to step c5, the vehicle supply management unit 15 determines in step c5 whether the SOC of the power storage unit 11 of the host vehicle 2 acquired in step c1 is greater than the threshold for the host vehicle. To do. Further, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 of the connection partner vehicle 2 acquired in step c2 is smaller than the partner vehicle threshold value. The vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the host vehicle 2 is larger than the threshold for the host vehicle, and determines that the SOC of the power storage unit 11 of the connected partner vehicle 2 is smaller than the threshold for the partner vehicle. Then, the process proceeds to step c6, and in other cases, the process proceeds to step c7.

  When there are a plurality of connection partner vehicles 2, in step c5, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 of the host vehicle 2 is larger than the threshold value for the host vehicle. It is determined whether or not there is a connection partner vehicle 2 in which the SOC of the power storage unit 11 is smaller than the threshold value for the partner vehicle. In this case, the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the host vehicle 2 is larger than the threshold value for the host vehicle, and the connected partner vehicle 2 whose SOC of the power storage unit 11 is smaller than the threshold value for the partner vehicle. If it is determined that there exists, the process proceeds to step c6, and otherwise, the process proceeds to step c7.

  For example, when the host vehicle 2 is the first vehicle 2a, the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the first vehicle 2a is larger than the threshold for the host vehicle, and the second vehicle 2b and the second vehicle 2a. If it is determined that the SOC of one or both of the three vehicles 2c is smaller than the opponent vehicle threshold, the process proceeds to step c4. The vehicle supply management unit 15 determines that the SOC of the power storage unit 11 of the first vehicle 2a is equal to or lower than the own vehicle threshold value, and the SOC of the power storage unit 11 of both the second vehicle 2b and the third vehicle 2c. When it is determined that it is equal to or greater than the opponent vehicle threshold, the process proceeds to step c7.

  When the process proceeds from step c5 to step c6, the vehicle supply management unit 15 starts discharging to the connection partner vehicle 2 in step c6. Specifically, the vehicle supply management unit 15 instructs the vehicle power conversion unit 12 to generate AC power from the DC power stored in the power storage unit 11 of the host vehicle 2 by the AC power generation unit 13. The generated AC power is supplied to the connection partner vehicle 2 via the connection line 41. As a result, the power storage unit 11 of the host vehicle 2 is discharged. Here, the connection partner vehicle 2 to which power is supplied from the power storage unit 11 of the host vehicle 2 is the vehicle 2 for which it is determined in step c5 that the SOC of the power storage unit 11 is smaller than the partner vehicle threshold.

  When the discharge to the connection partner vehicle 2 is started, the vehicle supply management unit 15 returns to step c1 and repeats the above-described processing. When the process returns to step c1 from step c6 and the processes of step c1 to step c5 are performed and then the process proceeds to step c6, the vehicle supply management unit 15 discharges the power storage unit 11 of the host vehicle 2 in step c6. Continue.

  When the process proceeds from step c5 to step c7, in step c7, the vehicle supply management unit 15 ends all the processes without charging and discharging the power storage unit 11 of the host vehicle 2. When the process proceeds to step c7 after returning to step c1 through step c4 or step c6, in step c7, the vehicle supply management unit 15 stops charging or discharging the power storage unit 11 of the host vehicle 2 and The process ends.

  For example, the SOC of power storage unit 11 of first vehicle 2a is greater than a threshold value, the SOC of power storage unit 11 of second vehicle 2b is greater than the threshold value, and the SOC of power storage unit 11 of third vehicle 2c is smaller than the threshold value. Think about the case.

  In this case, the vehicle supply management unit 15 of the first vehicle 2a determines that the SOC of the power storage unit 11 of the first vehicle 2a that is the host vehicle 2 is not smaller than the threshold for the host vehicle in step c3 shown in FIG. Since it judges, it transfers to step c5. In step c5, the vehicle supply management unit 15 of the first vehicle 2a determines that the SOC of the power storage unit 11 of the first vehicle 2a that is the host vehicle 2 is larger than the threshold for the host vehicle. In addition, the vehicle supply management unit 15 of the first vehicle 2a determines that the SOC of the power storage unit 11 of the third vehicle 2c out of the second vehicle 2b and the third vehicle 2c that are the connection partner vehicle 2 is lower than the threshold value for the partner vehicle. Judge that it is small. Therefore, the vehicle supply management unit 15 of the first vehicle 2a proceeds to Step c6 and starts discharging to the connection partner vehicle 2, specifically, the third vehicle 2c.

  The vehicle supply management unit 15 of the second vehicle 2b performs the same processing as the vehicle supply management unit 15 of the first vehicle 2a. Specifically, after the transition from step c3 shown in FIG. 5 to step c5, the routine proceeds to step c6, where discharge to the third vehicle 2c is started.

  The vehicle supply management unit 15 of the third vehicle 2c determines in step c3 shown in FIG. 5 that the SOC of the power storage unit 11 of the third vehicle 2c that is the host vehicle 2 is smaller than the threshold for the host vehicle. It transfers to step c4 and the charge to the electrical storage part 11 of the 3rd vehicle 2c which is the own vehicle 2 is started. At this time, the power charged in the power storage unit 11 of the third vehicle 2c is the power discharged from the power storage unit 11 of the first vehicle 2a and the second vehicle 2b.

  As described above, in the present embodiment, since the in-vehicle charging / discharging device 1 including the vehicle supply management unit 15 is mounted on each vehicle 2, it is possible to connect a plurality of vehicles 2 between the plurality of vehicles 2. Power can be distributed.

  FIG. 6 is a flowchart illustrating a processing procedure of the vehicle supply management unit 15 in the operation unit instruction mode when a plurality of vehicles 2 are connected. Each process of the flowchart shown in FIG. 6 is respectively performed by the vehicle supply management unit 15 of the first to third vehicles 2a to 2c shown in FIG. The flowchart shown in FIG. 6 is similar to the flowchart of the management unit determination mode shown in FIG. 5 described above, and therefore, the same steps are denoted by the same step numbers and common description is omitted.

  In the management unit determination mode shown in FIG. 5 described above, the vehicle supply management unit 15 starts the processing of the flowchart shown in FIG. 5 when the host vehicle 2 is connected to the connection partner vehicle 2, and proceeds to step c1. On the other hand, in the operation unit instruction mode, when the user operates the operation unit 18 to set the operation unit instruction mode, and the host vehicle 2 is connected to the connection partner vehicle 2, the vehicle supply management unit 15 Then, the process of the flowchart shown in FIG. 6 is started, and the process proceeds to step d1.

  In step d <b> 1, the vehicle supply management unit 15 determines whether a charge / discharge start instruction is input from the operation unit 18. When the vehicle supply management unit 15 determines that a charge / discharge start instruction has been input, the vehicle supply management unit 15 proceeds to step c1 and executes the processes of steps c1 to c6 in the same manner as the management unit determination mode shown in FIG. To do.

  In the operation unit instruction mode, the vehicle supply management unit 15 proceeds to step d2 after the process of step c4 and after the process of step c6. In step d <b> 2, the vehicle supply management unit 15 determines whether or not a charge / discharge stop instruction is input from the operation unit 18 of the host vehicle 2. When the vehicle supply management unit 15 determines that a charge / discharge stop instruction has been input from the operation unit 18 of the host vehicle 2, the vehicle supply management unit 15 proceeds to step c7, and in step c7, the power storage of the host vehicle 2 is performed as in the management unit determination mode. All the processes are terminated without charging and discharging the unit 11 or stopping the charging or discharging of the power storage unit 11 of the host vehicle 2. When determining that the charge / discharge stop instruction has not been input in step d2, vehicle supply management unit 15 returns to step c1 and repeats the process.

  As described above, in the operation unit instruction mode, when it is determined in step d1 that a charge / discharge start instruction is input from the operation unit 18, the process proceeds to step c1, and charging of the power storage unit 11 is performed in steps c1 to c6. Or discharge is performed. If it is determined in step d2 that a charge / discharge stop instruction has been input from the operation unit 18, the process proceeds to step c7, where the power storage unit 11 is not charged or discharged, or the power storage unit 11 is charged or discharged. Is stopped, and all processing ends.

  Thus, the user can start charging or discharging the power storage unit 11 at a desired timing by operating the operation unit 18 and inputting a charge / discharge start instruction. Further, the user can stop charging or discharging of the power storage unit 11 at a desired timing by operating the operation unit 18 and inputting a charge / discharge stop instruction. Therefore, for example, when the power storage unit 11 of the host vehicle 2 is being discharged, the charge / discharge stop instruction is input before the SOC of the power storage unit 11 of the host vehicle 2 reaches the threshold for the host vehicle. By stopping the discharge, the remaining capacity of the power storage unit 11 can be adjusted to a desired value.

  FIG. 7 is a diagram showing a state where the house 5 and the vehicle 2 that are not provided with the supply control means are connected. The house 5 shown in FIG. 7 includes the power load 31 and the power receiving unit 32 in the same manner as the house 3 shown in FIG. 1. However, unlike the house 3 shown in FIG. 1, the house 5 does not include the solar panel 33. . Therefore, unlike the house 3 shown in FIG. 1, the house 5 shown in FIG. 7 does not require a means for supplying the power generated by the solar panel 33 to the power load 31. 1 is not provided. Further, the house 5 shown in FIG. 7 does not include the house power conversion unit 34 and the house communication unit 36. As described above, the house 5 may not be provided with a supply control means for controlling the power supply operation like the house supply management unit 35 shown in FIG.

  Since the on-vehicle charging / discharging device 1 of the present embodiment includes the vehicle supply management unit 15 as described above, the vehicle 2 on which the on-vehicle charging / discharging device 1 of the present embodiment is mounted is shown in FIG. Even when connected to the house 5 where no control means is provided, it is possible to supply power to the house 5. Therefore, by mounting the in-vehicle charging / discharging device 1 of the present embodiment on the vehicle 2, even in the house 5 where the supply control means is not provided, the power of the vehicle 2 can be used in an emergency such as a power failure. it can.

  FIG. 8 is a flowchart showing the processing procedure of the vehicle supply management unit 15 in the operation unit instruction mode when the house 5 and the vehicle 2 not provided with the supply control means are connected. Each process of the flowchart shown in FIG. 8 is executed by the vehicle supply management unit 15. When the operation unit 18 is operated by the user to set the operation unit instruction mode and the vehicle 2 is connected to the house 5, the vehicle supply management unit 15 starts the processing of the flowchart shown in FIG. Migrate to FIG. 8 shows a case where the user instructs to discharge the vehicle 2 via the operation unit 18.

  Unlike the case shown in FIG. 1 described above, when the housing 5 is not provided with supply control means, the vehicle supply management unit 15 transmits the identification number of the vehicle 2 via the vehicle communication unit 16, The ID reception signal is not transmitted from the house 5 side. Therefore, it cannot be determined whether or not the vehicle 2 is connected to the house based on whether or not the ID reception signal is received. In preparation for this case, in the present embodiment, the vehicle supply management unit 15 monitors the output of a power sensor (not shown) interposed in the connection line 41 that connects the vehicle 2 and the house 5. The vehicle supply management unit 15 determines that the vehicle 2 is connected to the house 5 when the power sensor detects that power is generated in the connection line 41.

  When the vehicle 2 is connected to the house 1 having the housing supply management unit 34 as shown in FIG. 1 described above, it is detected by the power sensor that power is generated in the connection line 41 and the ID reception signal Is received by the vehicle communication unit 16. Therefore, the vehicle supply management unit 15 determines whether or not the power sensor detects that power is generated in the connection line 41 and determines whether or not the ID reception signal is received by the vehicle communication unit 16. It is only necessary to be configured to determine the above. Accordingly, the vehicle supply management unit 15 is connected to the house 1 including the housing supply management unit 35 or the supply control means such as the housing supply management unit 35 is not provided. Whether it is connected to the house 5 can be determined.

  Thus, when it is determined that the vehicle 2 is connected to the house 5 and the process proceeds to step e1, it is determined whether or not a discharge start instruction is input from the operation unit 18 in step e1. When it is determined that the discharge start instruction is input, the vehicle supply management unit 15 proceeds to step e2, and when it is determined that the discharge start instruction is not input, the vehicle supply management unit 15 waits until the discharge start instruction is input.

  In step e2, the vehicle supply management unit 15 starts discharging the power storage unit 11 toward the house 5 in the same manner as in step a6 shown in FIG. 2 described above, and proceeds to step e3. In step e3, the vehicle supply management unit 15 acquires the SOC of the power storage unit 11 of the host vehicle 2 via a communication line of a communication network (not shown) mounted on the vehicle 2 such as CAN, for example. Transition. In step e4, the vehicle supply management unit 15 measures the electric power between the host vehicle 2 and the house 5 in the same manner as shown in FIG. 1 described above, and proceeds to step e5.

  In step e5, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 of the host vehicle 2 acquired in step e3 is smaller than a predetermined threshold value. Further, the vehicle supply management unit 15 determines whether or not the electric power between the host vehicle 2 and the house 5 measured in step e4 is equal to or less than zero (0) (≦ 0). When the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 is smaller than the threshold value or determines that the electric power between the host vehicle 2 and the house 5 is equal to or less than zero, the vehicle supply management unit 15 proceeds to step e6. Otherwise, the process proceeds to step e7.

  In step e <b> 7, the vehicle supply management unit 15 determines whether a discharge stop instruction is input from the operation unit 18. When it is determined that the discharge stop instruction is input, the vehicle supply management unit 15 proceeds to step e6. When it is determined that the discharge stop instruction is not input, the vehicle supply management unit 15 returns to step e3 and repeats the above-described processing. In step e <b> 6, the vehicle supply management unit 15 stops discharging the power storage unit 11 and ends all the processes.

  As described above, in the present embodiment, the vehicle supply management unit 15 of the in-vehicle charging / discharging device 1 mounted on the vehicle 2 controls the start and stop of the discharge of the power storage unit 11, so that the vehicle 2 and the house 5 side. To manage the supply of power to. Accordingly, electric power can be supplied from the vehicle 2 to the house 5 in which supply control means is not provided as shown in FIG. Therefore, even in the house 5 in which the supply control means is not provided as shown in FIG. 7, the electric power of the vehicle 2 can be used in an emergency such as a power failure.

  By mounting the in-vehicle charging / discharging device 1 of the present embodiment on the vehicle 2 as described above, not only the housing 1 including the housing supply management unit 35 shown in FIG. 1 but also the supply control as shown in FIG. Electric power can be supplied from the vehicle 2 even to the house 5 where no means is provided.

  Although FIG. 8 shows the processing procedure of the vehicle supply management unit 15 in the operation unit instruction mode, the vehicle supply management unit 15 may be set and used in the management unit determination mode. In this case, step e1 and step e7 shown in FIG. 8 are not provided. The vehicle supply management unit 15 starts the process when the operation unit 18 is operated by the user, the management unit determination mode is set, and the vehicle 2 is connected to the house 5, and the vehicle supply management unit 15 proceeds to step e2 of the flowchart shown in FIG. Transition. And the vehicle supply management part 15 performs each process of step e2-step e6 similarly to the case of operation part instruction | indication mode.

  In the management unit determination mode, the vehicle supply management unit 15 determines in step e5 that the SOC of the power storage unit 11 is smaller than the threshold value, or the power between the host vehicle 2 and the house 5 is zero or less. If it is determined, the process proceeds to step e6. Otherwise, the process returns to step e3 and the process is repeated. That is, in the management unit determination mode, when the SOC of the power storage unit 11 is smaller than the threshold value or the power between the host vehicle 2 and the house 5 becomes zero or less, the discharge of the power storage unit 11 is stopped.

  In contrast, in the operation unit instruction mode, it is determined whether or not a discharge start instruction is input in step e1, and whether or not a discharge stop instruction is input in step e7. Thus, the user can start or stop the discharge of the power storage unit 11 at a desired timing by operating the operation unit 18 and inputting a discharge start instruction or a discharge stop instruction. Therefore, for example, discharging of power storage unit 11 can be stopped before the SOC of power storage unit 11 reaches a threshold value, and the remaining capacity of power storage unit 11 can be adjusted to a desired value.

  FIG. 8 shows a case where the user gives an instruction to discharge the vehicle 2 via the operation unit 18. However, the vehicle 2 may be supplied with electric power from the house 5 to charge the power storage unit 11. Is possible. When charging the power storage unit 11 of the vehicle 2, the user may operate the operation unit 18 and input an instruction to start charging the power storage unit 11, for example.

  FIG. 9 is a diagram illustrating a state in which the vehicle 2 on which the in-vehicle charging / discharging device 1 is mounted and the charging-only vehicle 6 are connected. Charging-only vehicle 6 includes power storage unit 11 and vehicle power conversion unit 12A. The vehicle power conversion unit 12A of the charge-only vehicle 6 includes a DC power generation unit 14, but, unlike the vehicle power conversion unit 12 of the vehicle 2 on which the in-vehicle charging / discharging device 1 is mounted, includes an AC power generation unit 13. Not. Specifically, the charge-only vehicle 6 is not equipped with the on-vehicle charge / discharge device 1 of the present embodiment. Therefore, the charge-only vehicle 6 can charge the power storage unit 11 but cannot discharge the power storage unit 11.

  Since the in-vehicle charging / discharging device 1 of the present embodiment includes the vehicle supply management unit 15 as described above, the vehicle in which the in-vehicle charging / discharging device 1 of the present embodiment is mounted (hereinafter referred to as “charge / discharge vehicle”). By connecting 2 to the charge-only vehicle 6, the electric power stored in the power storage unit 11 of the charge / discharge vehicle 2 can be distributed to the charge-only vehicle 6 and the charge-only vehicle 6 can be charged.

  FIG. 10 is a flowchart showing a processing procedure of the vehicle supply management unit 15 in the operation unit instruction mode when the charge / discharge vehicle 2 and the charge-only vehicle 6 are connected. Each process of the flowchart shown in FIG. 10 is executed by the vehicle supply management unit 15. Since the flowchart shown in FIG. 10 is similar to the flowchart shown in FIG. 8 described above, the same steps are denoted by the same step numbers and common description is omitted. When the operation unit 18 is operated by the user to set the operation unit instruction mode and the charge / discharge vehicle 2 and the charge-only vehicle 6 are connected, the vehicle supply management unit 15 performs the processing of the flowchart shown in FIG. Start and move to step e1. The vehicle supply management unit 15 executes the processes of step e1 to step e3 and step e6 to step e7 in the same manner as step e1 to step e3 and step e6 to step e7 of the flowchart shown in FIG.

  In the flowchart shown in FIG. 10, step f1 is executed instead of step e4 shown in FIG. 8, and step f2 is executed instead of step e7 shown in FIG. In step f1, the vehicle supply management unit 15 measures the output power from the host vehicle 2 in the same manner as in the case shown in FIG. When the output power from the host vehicle 2 is measured, the vehicle supply management unit 15 proceeds to step f2.

  In step f2, the vehicle supply management unit 15 determines whether or not the SOC of the power storage unit 11 of the host vehicle 2 acquired in step e3 is smaller than a predetermined threshold value. Further, the vehicle supply management unit 15 determines whether or not the output power from the host vehicle 2 measured in step f1 is zero (0) or less (≦ 0). When the vehicle supply management unit 15 determines that the SOC of the power storage unit 11 is smaller than the threshold value or determines that the output power from the host vehicle 2 is equal to or less than zero, the vehicle supply management unit 15 proceeds to step e6. Shifts to step e7.

  As described above, in the present embodiment, the vehicle supply management unit 15 of the in-vehicle charge / discharge device 1 mounted on the charge / discharge vehicle 2 controls the start and stop of the discharge of the power storage unit 11 of the charge / discharge vehicle 2. The power supply from the charge / discharge vehicle 2 to the charge-only vehicle 6 is managed. As a result, as shown in FIG. 9, a vehicle that does not include the on-vehicle charging / discharging device 1, specifically, a charging-only vehicle 6 that does not include supply control means such as the vehicle supply management unit 15, Electric power can be supplied from the charge / discharge vehicle 2. Therefore, it is possible to charge the power storage unit 11 of the charging-only vehicle 6 by mounting the in-vehicle charging / discharging device 1 of the present embodiment on the vehicle 2.

  In the above-described embodiment, the case where the vehicle 2 is a hybrid vehicle has been described. However, the vehicle 2 is not limited to this and may be another electric vehicle, for example, an electric vehicle. Even when the vehicle 2 is another electric vehicle such as an electric vehicle, it can be implemented in the same manner as in the present embodiment.

  DESCRIPTION OF SYMBOLS 1 In-vehicle charging / discharging apparatus, 2 vehicle, 2a 1st vehicle, 2b 2nd vehicle, 2c 3rd vehicle, 3,5 house, 6 charge only vehicle, 11 electrical storage part, 12, 12A vehicle power conversion part, 13 AC power Generation unit, 14 DC power generation unit, 15 vehicle supply management unit, 16 vehicle communication unit, 17 position information acquisition unit, 18 operation unit, 21 power generation unit, 22 engine, 31 power load, 32 power reception unit, 33 sunlight Panel, 34 Residential power conversion unit, 35 Residential supply management unit, 36 Residential communication unit, 41 Connection line, 42 Communication line.

Claims (4)

An in-vehicle charging / discharging device mounted on a vehicle,
Power storage means configured to be able to charge and discharge electric power;
Power conversion means for converting the electric power discharged from the electric storage means into electric power that can be supplied to the outside of the vehicle, and converting electric power supplied from the outside of the vehicle into electric power that can be charged in the electric storage means;
An in-vehicle charging / discharging device comprising: a power supply operation from the power storage means to the outside of the vehicle; and a supply control means for controlling a power supply operation from the outside of the vehicle to the power storage means. A communication means capable of communicating with a connection target to which the vehicle is connected;
The supply control unit acquires and acquires power status information regarding the power consumed by the connection target, the power supplied to the connection target, and the power generated by the connection target via the communication unit. The power supply operation from the power storage unit to the connection target or the power supply operation from the connection target to the power storage unit is determined based on power status information. The in-vehicle charging / discharging device according to 1. Further comprising position information acquisition means for acquiring current position information representing the current position of the vehicle;
The supply control means controls the power conversion means so as to select a frequency and a voltage of power supplied from the power storage means to the outside of the vehicle based on the current position information acquired by the position information acquisition means. The in-vehicle charging / discharging device according to claim 1, wherein: The vehicle includes power generation means for generating power with a prime mover,
The in-vehicle charging / discharging device according to claim 1, wherein the power storage unit is configured to be capable of storing electric power generated by the power generation unit.

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