JP2013178884A - Electric vehicle, power reception facility, and power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed a power with stability by stabilizing an output state of an on-vehicle power conversion device when a power is supplied from an electric vehicle to a power reception facility provided outside the vehicle.SOLUTION: A vehicle 100 includes a power conversion device 200 converting an output voltage of a power storage device 110 that is an on-vehicle power source into a voltage to be supplied to a power reception facility 900 provided outside the vehicle, in a power feeding mode. The vehicle 100 and the power reception facility 900 can communicate with each other by means of communication units 310 and 920. An ECU 300 transmits to the power reception facility 900 a power feeding upper limit value indicating an upper limit value with respect to an output at power feeding of the power conversion device 200, in the power feeding mode. The power reception facility 900 controls power supply to a load 1000 so as to restrict an output state of the power conversion device 200 according to the power feeding upper limit value received from the vehicle 100.

Description

  The present invention relates to an electric vehicle, a power receiving facility, and a power supply system including these, and more specifically to a technique for supplying power output from an in-vehicle power source to facilities outside the vehicle.

  In electric vehicles such as an electric vehicle, a hybrid vehicle, and a fuel cell vehicle configured to generate a vehicle driving force by an electric motor, a power storage device that stores electric power for driving the electric motor is mounted.

  Furthermore, an electric vehicle configured to be able to exchange electric power with the outside of the vehicle has been developed. For example, a so-called plug-in type electric vehicle in which an in-vehicle power storage device can be charged by a power source external to the vehicle such as a commercial power source (hereinafter also simply referred to as “external power source”) has been put into practical use. Furthermore, an electric vehicle equipped with a “power source” typified by a power storage device is considered as a power supply source to the outside of the vehicle, and a concept of supplying power to a load outside the vehicle by electric power from the electric vehicle is being studied. .

  For example, Japanese Patent Laid-Open No. 2008-182851 (Patent Document 1) discloses an electric vehicle, a hybrid vehicle, a fuel cell vehicle, and the like as a power storage device that can be connected to a power consuming facility that consumes power supplied from a commercial power source. The use of an in-vehicle storage battery mounted on the vehicle is described. In patent document 1, electric power is transferred between an electric power consumption facility and the storage battery of an electric power storage facility via an inverter. Further, it is described that the detection result of the power consumption of the power consumption facility is received by the storage battery communication means, and the charge / discharge of the storage battery is controlled based on the received detection result.

  In addition, International Publication No. 2006/059762 describes an AC power supply system that outputs a commercial AC voltage from a hybrid vehicle to equipment outside the vehicle when a commercial power supply fails. Patent Document 2 describes a configuration in which the power generation amount upper limit value of the vehicle at this time is set based on the remaining amount of fuel, and the set power generation upper limit value is supplied to the facility outside the vehicle via an antenna. Is done. In addition, on the equipment side, the load status is controlled so that commercial AC power is supplied from an electrical load with a high priority level according to the priority registered in advance so that the power supplied to the electrical load does not exceed the power generation upper limit. It is described to do.

  Japanese Patent Laying-Open No. 2009-278776 (Patent Document 3) describes a power supply system that supplies power to a building from an automobile equipped with an in-vehicle battery via a connection power line. In Patent Document 3, the remaining capacity of the in-vehicle battery is transmitted from the vehicle to the controller on the building side. Then, the controller controls the power supply to the building to be stopped when the received remaining capacity becomes smaller than a predetermined value.

JP 2008-182851 A International Publication No. 2006/059762 JP 2009-278776 A

  As described in Patent Document 1, when power is supplied from an electric vehicle to equipment outside the vehicle, a power conversion device such as an inverter converts the output power of the in-vehicle power source into power supplied to the equipment outside the vehicle. To do. Hereinafter, such an operation of supplying electric power from the vehicle to the outside of the vehicle is referred to as “power supply operation”, and an operation mode of the vehicle that performs the power supply operation is referred to as “power supply mode”.

  In general, in such a power supply mode, an AC voltage having a predetermined frequency corresponding to a supply voltage from a commercial system power supply is supplied from an electric vehicle to a facility outside the vehicle. In this case, the inverter controls the output voltage from the vehicle to be an AC voltage having a predetermined amplitude and frequency.

  However, if the power consumption in the facility outside the vehicle that is the power supply destination is large, the output state of the power conversion device exceeds the upper limit of the capability, so that the power supply quality may be deteriorated due to the disturbance of the waveform of the output voltage. Or there exists a possibility that an excessive electric current may flow instantaneously and a power converter device may stop automatically by a self-protection function. In this regard, Patent Documents 1 to 3 do not particularly mention controlling power feeding by reflecting the ability related to the output of the power converter (inverter).

  The present invention has been made to solve such problems, and an object of the present invention is to provide an output of an on-vehicle power converter when power is supplied from an electric vehicle to a power receiving facility outside the vehicle. By stabilizing the state, the power is stably supplied.

  In one aspect of the present invention, an electric vehicle having a power supply mode for outputting electric power toward equipment outside the vehicle includes an electric power source mounted on the vehicle, an electric power node for exchanging electric power with the outside of the vehicle, electric power Conversion device. In the power supply mode, the power conversion device is configured to convert the power supplied from the power source into power supplied to the facility and output the power to the power node. Furthermore, the electric vehicle includes notification means for notifying the facility of an upper limit value related to the output during power supply of the power conversion device in the power supply mode.

  Preferably, the notification means notifies the facility of the upper limit value before supplying power by the output of the power conversion device.

  More preferably, in the electric vehicle, the upper limit value is a maximum value of a change amount of the output current of the power conversion device within a certain time. Alternatively, the upper limit value is the maximum value of the output current of the power conversion device.

  Another aspect of the present invention is configured to receive electric power from an on-vehicle power source and an electric vehicle including a power conversion device for converting electric power from the electric power source into electric power supplied to the outside of the vehicle in the power supply mode. In the power supply mode, the power receiving facility limits the output state of the power conversion device according to the upper limit value based on the acquisition means for acquiring the upper limit value related to the output during power supply of the power conversion device from the vehicle, and the acquired upper limit value. Control means for controlling power supply to an electrical load that operates by receiving power from the power receiving facility.

Preferably, the acquisition unit acquires the upper limit value before supplying power from the vehicle to the power receiving facility.
More preferably, the power receiving facility further includes a detector for detecting at least one of a voltage and a current supplied from the electric vehicle. And a control means controls the electric power supply to the electric load which receives electric power from a power receiving installation and is operated so that the output state of a power converter device may be restrict | limited according to an upper limit based on the output of a detector.

  More preferably, the power receiving facility further includes means for acquiring information related to the output state of the power converter from the electric vehicle during power feeding. Then, the control means is based on the output of the detector and the information acquired from the electric vehicle so that the output state of the power conversion device is limited according to the upper limit value to the electric load that operates by receiving power from the power receiving facility. To control the power supply.

  Alternatively, more preferably, the power receiving facility includes a controller for controlling the operation of the electric load such that the output state of the power conversion device is limited according to the upper limit value.

  Alternatively, more preferably, the power receiving facility includes a distribution board and a controller. The distribution board is electrically connected to a first path through which electric power from the electric vehicle is supplied, a second path through which electric power is supplied from a power source different from the electric vehicle, and an electric load. The controller is configured to control the power supplied from the first path to the distribution board so that the output state of the power converter is limited according to the upper limit value.

  In particular, the upper limit value is the maximum value of the amount of change in the output current of the power conversion device within a certain time. Or an upper limit is the maximum value of the output current of a power converter device.

  In still another aspect of the present invention, the power supply system is configured to supply power from the electric vehicle in an electric vehicle having an on-vehicle power source and a power supply mode in which the electric vehicle outputs electric power to the outside of the vehicle. And a power receiving facility configured in the above. The electric vehicle includes a power node for transmitting and receiving power to and from the outside of the vehicle, a power conversion device for converting power from a power source into power supplied to equipment in the power supply mode, and power in the power supply mode. And a notification means for notifying the facility of an upper limit value related to the output during power feeding of the conversion device. The power receiving facility receives power from the power receiving facility so that the output state of the power conversion device is restricted according to the upper limit value based on the means for acquiring the upper limit value from the vehicle in the power supply mode and the acquired upper limit value. Control means for controlling the power supply to the operating electrical load.

  Preferably, the notification means notifies the facility of the upper limit value before supplying power by the output of the power conversion device in the power supply mode. The acquisition unit acquires the upper limit value from the vehicle before power is supplied in the power supply mode.

  More preferably, in the power supply system, the power receiving facility further includes a detector for detecting at least one of a voltage and a current supplied from the electric vehicle. And a control means controls the electric power supply to an electric load so that the output state of a power converter device may be restrict | limited according to an upper limit based on the output of a detector.

  Alternatively, more preferably, in the power supply system, the electric vehicle further includes means for outputting information related to the output state of the power converter to the electric vehicle during power feeding. The power receiving facility further includes means for acquiring information from the electric vehicle during power feeding. The control means controls power supply to the electric load based on the output of the detector and the information acquired from the electric vehicle so that the output state of the power conversion device is limited according to the upper limit value.

  Preferably, in the power supply system, the power receiving facility includes a controller. The controller controls the operating state of the electric load so that the output state of the power converter is limited according to the upper limit value.

  Alternatively, preferably, in the power supply system, the power receiving facility includes a distribution board and a controller. The distribution board is electrically connected to a first path through which electric power from the electric vehicle is supplied, a second path through which electric power is supplied from a power source different from the electric vehicle, and an electric load. The controller controls the power supplied from the first path to the distribution board so that the output state of the power conversion device is limited according to the upper limit value.

  In particular, in the power supply system, the upper limit value is the maximum value of the amount of change within a certain time of the output current of the power converter. Or an upper limit is the maximum value of the output current of a power converter device.

  Preferably, in the power supply system, the power node and the power receiving facility are electrically connected by a cable.

  According to the present invention, when power is supplied from an electric vehicle to a power receiving facility outside the vehicle, the output state of the on-vehicle power converter is stabilized when power is supplied from the electric vehicle to the power receiving facility outside the vehicle. Therefore, it is possible to supply power stably.

It is a schematic block diagram for showing the structural example of the electric power supply system which concerns on Embodiment 1 of this invention. It is a flowchart explaining the control operation by the side of the vehicle in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 1 of this invention. It is a flowchart explaining the control operation by the side of a power receiving installation in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 1 of this invention. It is a conceptual diagram for demonstrating the relationship between the output current of the power converter device of a vehicle, and a current change rate upper limit. It is a flowchart explaining the modification of the control operation by the side of power receiving equipment in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 1 of this invention. It is a schematic block diagram for showing the structural example of the electric power supply system which concerns on the modification of Embodiment 1 of this invention. It is a flowchart explaining the control operation by the side of the vehicle in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 2 of this invention. It is a flowchart explaining the control operation by the side of the power receiving installation in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 2 of this invention. It is a flowchart explaining the control operation by the side of the vehicle in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 3 of this invention. It is a flowchart explaining the control operation by the side of the power receiving installation in the electric power feeding mode of the vehicle in the electric power supply system by Embodiment 3 of this invention. It is a flowchart explaining the control operation by the side of the vehicle in the electric power feeding mode of the vehicle in the electric power supply system by the modification of Embodiment 3 of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, the same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated in principle.

[Embodiment 1]
FIG. 1 is a schematic block diagram for illustrating a configuration example of a power supply system according to Embodiment 1 of the present invention.

  Referring to FIG. 1, the power supply system according to Embodiment 1 includes a vehicle 100 and a power receiving facility 900. In FIG. 1, the vehicle 100 is configured to be electrically connected to a power receiving facility 900 outside the vehicle when the cable 400 is attached. That is, electric power is transmitted between the vehicle 100 and the outside of the vehicle (power receiving equipment 900) via the cable 400.

  Vehicle 100 is an “electric vehicle” capable of traveling with electric power from the on-vehicle power storage device. Vehicle 100 includes, for example, a hybrid vehicle, an electric vehicle, a fuel cell vehicle, and the like. Hereinafter, examples of the vehicle 100 include a high-rid vehicle, particularly a so-called plug-in type hybrid vehicle that can charge the power storage device 110 with an external power source. The external power supply is typically constituted by a commercial system power supply 800.

  Vehicle 100 includes a power output device 105, an on-vehicle power storage device 110, an ECU (Electronic Control Unit) 300 that is a control device, and a communication unit 310.

  The power storage device 110 is a power storage element configured to be rechargeable. The power storage device 110 includes, for example, a secondary battery such as a lithium ion battery or a nickel metal hydride battery, or a power storage element such as an electric double layer capacitor.

  The power output device 105 generates a driving force for the vehicle 100 based on a driving command from the ECU 300. The driving force generated by the power output device 105 is transmitted to the driving wheels of the vehicle 100. The drive command is a control command generated based on the requested vehicle driving force or vehicle braking force while the vehicle 100 is traveling.

  In the hybrid vehicle, power output device 105 includes an engine 106 and a motor generator 107. For example, power output device 105 is configured to output one or both of the outputs of engine 106 and motor generator 107 to the drive wheels. Power output device 105 is configured to include a power converter (not shown) that converts output power of power storage device 110 into power for controlling the output torque of motor generator 107.

  Further, in a hybrid vehicle, power output device 105 is generally configured to have a generator and a power converter (inverter) (not shown) for generating charging power for power storage device 110 by the output of engine 106. Is. In this case, the engine 106 and these generators and power converters (hereinafter also referred to as “engine 106 etc.”) constitute an on-vehicle “power source”.

  Therefore, vehicle 100 includes at least power storage device 110 as an on-vehicle “power source”. In the hybrid vehicle, the “power source” can be configured by the power storage device 110, the engine 106, and the like.

  When vehicle 100 is an electric vehicle, the arrangement of engine 106 is omitted, and power output device 105 generates the driving force of vehicle 100 by the output of motor generator 107. In this case, the “power source” is configured by the power storage device 110. When vehicle 100 is a fuel cell vehicle, “power source” is configured by power storage device 110 and a fuel cell (not shown).

  ECU 300 includes a CPU (Central Processing Unit), a storage device, and an input / output buffer. The ECU 300 inputs a signal from each sensor or the like and outputs a control signal to each device. Take control. These controls are not limited to processing by software, but can also be processed by dedicated hardware (electronic circuit).

  ECU 300 is configured to control in-vehicle devices in an integrated manner in each operation mode of vehicle 100. For example, in the travel mode in which the vehicle 100 travels, the ECU 300 is necessary for the entire vehicle 100 in accordance with the vehicle state of the vehicle 100 and driver operations (accelerator pedal depression amount, shift lever position, brake pedal depression amount, etc.). Vehicle driving force and vehicle braking force are calculated. Then, ECU 300 generates a drive command for power output device 105 so as to realize the requested vehicle driving force or vehicle braking force. ECU 300 is configured to calculate a state of charge (SOC) of power storage device 110 based on the detected values of voltage and current from power storage device 110.

  Vehicle 100 includes an operation mode (hereinafter referred to as “charging mode”) for charging in-vehicle power storage device 110 with an external power source and an in-vehicle “power source” as an operation mode for transferring power to and from the outside of the vehicle. There is a power supply mode in which the supplied power is converted into AC power and output to the outside of the vehicle. Thereby, not only the vehicle 100 is externally charged by the external power source, but also the power from the power source of the vehicle 100 can be supplied to the load outside the vehicle. That is, as seen in a smart grid or the like, it is possible to configure a power supply system using the vehicle 100 as a power supply source.

  Vehicle 100 includes a power conversion device 200, an inlet 220, and a power line ACL1 as configurations for a charging mode and a power feeding mode.

  Inlet 220 corresponds to a “power node” for transferring power to and from the outside of the vehicle. In the power supply mode, the power conversion device 200 converts the power supplied from the “power source”, specifically, the DC power generated by the discharge of the power storage device 110 and / or the power generation of the engine 106 or the like into the AC power to convert the power line. Output to ACL1. The power conversion device 200 is connected to the inlet 220 through the power line ACL1.

  In the power supply mode, the connector 410 of the cable 400 is connected to the inlet 220. By connecting the inlet 220 and the power receiving facility 900 with the cable 400, electric power can be supplied from the vehicle 100 to the power receiving facility 900. A voltage sensor 302 and a current sensor 304 are arranged on the power line ACL1. Voltage sensor 302 detects the effective value of AC voltage Vac output from power conversion device 200 in the power supply mode. Similarly, current sensor 304 detects the effective value of AC current Iac output from power conversion device 200 in the power supply mode.

  The communication unit 310 is configured to be able to transmit and receive information to / from the outside of the vehicle 100 and at least the power receiving facility 900. The communication unit 310 may be configured to perform wireless communication, or may be configured to perform power line communication via the cable 400.

  In the configuration example of FIG. 1, the cable 400 and the power conversion device 200 are shared between the charging mode and the power supply mode. That is, in the charging mode, cable 400 electrically connects between vehicle 100 and an external power source (for example, a commercial power source). Specifically, the connector 410 of the cable 400 is connected to the inlet 220 of the vehicle 100, while the plug 420 of the cable 400 is connected to an outlet of a commercial system power supply. Accordingly, the on-board power storage device 110 can be charged with power from the external power source.

  In addition to the connector 410 and the plug 420, the cable 400 includes a power line 440 that connects the connector 410 and the plug 420.

  The connector 410 is provided with an operation unit 415 and a changeover switch 417. The operation unit 415 is operated by the user when the connector 410 is removed from the inlet 220. Specifically, when the user presses operation portion 415, the fitting state between the fitting portion (not shown) of connector 410 and inlet 220 is released.

  The changeover switch 417 is a switch for switching between the power feeding mode and the charging mode. The changeover switch 417 is configured so that the user can select one of the power supply mode and the charge mode.

  When the charging mode is selected by changeover switch 417, vehicle 100 operates to charge power storage device 110 with electric power supplied from the outside of the vehicle. On the other hand, when power supply mode is selected by changeover switch 417, vehicle 100 operates to supply electric power from an on-vehicle power source to a load outside the vehicle.

  In the power supply mode, the vehicle 100 basically converts the discharge power from the power storage device 110 into power supplied to the outside of the vehicle and outputs it from the inlet 220 using the power storage device 110 as a power source. Alternatively, the vehicle 100 can execute the operation in the power supply mode using the engine 106 or the like as a power source. In this case, the DC power for charging power storage device 110 generated by engine 106 or the like is further converted into power supplied to the outside of the vehicle by power conversion device 200.

  When vehicle 100 has a configuration in which both power storage device 110 and engine 106 are mounted as “power sources”, connector 410 has a changeover switch (not shown) for selecting a power source in the power supply mode. Is further provided. Alternatively, this changeover switch may be provided in the vehicle interior. In a vehicle that can execute the operation in the power supply mode by either discharging of the power storage device 110 or power generation by driving the engine 106, it can be expected that power can be supplied to the outside of the vehicle for a long time.

  In the configuration example of FIG. 1, the power conversion device 200 used in the power supply mode performs power conversion in the opposite direction to the power conversion in the power supply mode in the charging mode. Specifically, power conversion device 200 converts AC power from an external power source into DC power for charging power storage device 110 in the charging mode. As described above, the power conversion device 200 can be used in both the charging mode and the power feeding mode by configuring bidirectional power conversion.

  Alternatively, unlike the configuration example of FIG. 1, a configuration in which a power conversion device for charging mode and a power conversion device for power supply mode are separately provided is also possible. In this case, the power conversion device 200 for power supply mode performs power conversion from DC power to AC power. Further, a separate power conversion device (not shown) for performing power conversion from AC power to DC power is provided between power storage device 110 and inlet 220 in parallel with power conversion device 200.

Next, the configuration on the power receiving facility side will be described.
The power receiving facility 900 is typically configured by an energy management system such as a HEMS (Home Energy Management System). Therefore, hereinafter, the power receiving facility 900 is also referred to as HEMS 900. FIG. 1 shows a configuration related to the power supply mode of vehicle 100 in HEMS 900.

  Although not shown, a power path (not shown) can be selectively formed between the commercial power supply 800 and the charge / discharge connector 910. If it does in this way, it becomes possible to respond | correspond to the charge mode of the vehicle 100 by connecting the plug 420 of the cable 400 to the charging / discharging connector 910 of HEMS900.

  The HEMS 900 includes a charge / discharge connector 910, a display unit 915, a communication unit 920, an AC / DC converter 930, a power storage device 940, a bidirectional PCS (Power Conditioning Subsystem) 945, a distribution board 950, and a controller. 990.

  Electric power is supplied from the distribution board 950 to an outlet (not shown), and the load 1000 can operate by receiving AC power from the distribution board 950 by being connected to the outlet. Typically, the load 1000 corresponds to an electric device used at home.

  Charging / discharging connector 910 is electrically connected to inlet 220 of vehicle 100 by being connected to plug 420 of cable 400. Charging / discharging connector 910 and AC / DC converter 930 are connected by power line ACL2.

  AC / DC converter 930 performs bidirectional AC / DC conversion between power line ACL2 to which an AC voltage is transmitted and power line PL1 to which a DC voltage is transmitted. Power storage device 940 is connected to power line PL1.

  Bidirectional PCS 945 is connected between power line PL1 and power line ACL3 to which AC power is transmitted. Bi-directional PCS 945 converts the DC power of power line PL1 into AC power linked to commercial power supply 800 and outputs it to power line ACL3, and charges power storage device 940 with AC power on power line ACL3. It is possible to perform bidirectional conversion of power converted into DC power and output to the power line PL1. Bidirectional PCS 945 and distribution board 950 are electrically connected via power line ACL3.

  Distribution board 950 is further connected to commercial power supply 800 via power line ACL4. In the configuration example of FIG. 1, a solar cell 970 and a PCS 975 may be further connected to the distribution board 950 via the power line ACL5. The PCS 975 converts the DC power generated by the solar cell 970 into AC power linked with AC power from the commercial power supply 800 and outputs the AC power to the power line ACL5.

  Alternatively, instead of the solar cell 970 or in addition to the solar cell 970, a fuel cell or the like may be provided as a power source. As described above, regarding the power source different from the vehicle 100, it is possible to arrange an arbitrary power source including the commercial power source 800.

  The controller 990 controls various devices in the HEMS 900 in an integrated manner. The communication unit 920 is configured to be able to transmit and receive information with at least the communication unit 310 of the vehicle 100. The communication unit 920 may be configured to perform communication wirelessly or may be configured to perform power line communication via the cable 400. Therefore, data or a control command can be transmitted from the vehicle 100 to the HEMS 900. Conversely, data or control commands can be transmitted from the HEMS 900 to the vehicle 100. The display unit 915 is provided in the charge / discharge connector 910 and can visually display information related to charge / discharge of the HEMS 900 in accordance with an instruction from the controller 990.

  In the power supply mode of the vehicle 100, an AC voltage from the vehicle 100 is input to the charge / discharge connector 910 via the cable 400. AC / DC converter 930 converts the AC voltage transmitted to power line ACL2 via charge / discharge connector 910 into a DC voltage for charging power storage device 940, and outputs it to power line PL1. In the power supply mode of vehicle 100, bidirectional PCS 945 converts the DC power of power line PL1 into AC power linked with commercial system power supply 800 and outputs it to power line ACL3.

  Thus, in the power supply mode of vehicle 100, the AC voltage input to charge / discharge connector 910 is once converted into a DC voltage for charging power storage device 940. Further, this DC power is supplied from the distribution board 950 to the load 1000 through power conversion by the bidirectional PCS 945. Thus, the “first route” for supplying power from the vehicle 100 to the distribution board 950 is configured by the route from the charge / discharge connector 910 to the power line ACL3.

  Further, in the power supply mode of vehicle 100, power from a power source different from vehicle 100 is supplied from distribution board 950 to load 1000. That is, the power lines ACL4 and ACL5 constitute a “second path” for supplying power from the power source different from that of the vehicle 100 to the distribution board 950. Thus, in the power supply mode of the vehicle 100, the power consumption of the load 1000 is ensured by the sum of the power supplied by the first route and the power supplied by the second route.

  A voltage sensor 904 and a current sensor 906 are provided on the power line ACL2. Voltage sensor 904 measures an effective value (hereinafter also simply referred to as input voltage VL) of AC voltage VL input from vehicle 100 to charge / discharge connector 910. Similarly, current sensor 906 detects an effective value (hereinafter, also simply referred to as input current VL) of alternating current IL input from vehicle 100 to charge / discharge connector 910.

  The AC voltage input to the HEMS 900 follows the AC voltage Vac that is voltage-controlled by the power conversion device 200. When the power supplied from power line PL1 to distribution board 950 increases with the increase in power consumption by load 1000, input current IL increases. When the input current IL to the HEMS 900 increases and an output current Iac that exceeds the power conversion capability of the power conversion device 200 is generated, the waveform of the AC voltage Vac may be disturbed. For example, when the amplitude of the AC voltage Vac is reduced, there is a possibility that the quality of the power supply is deteriorated that the AC waveform is distorted.

Or there exists a possibility that the power converter device 200 may stop automatically, when the self-protection function of the power semiconductor switching element (not shown) which comprises the power converter device 200 acts.
If the power conversion device 200 stops, there is a possibility that the vehicle 100 cannot be used as a power supply source until the user executes a reset process. As described above, when the output state of the power conversion device 200 exceeds the upper limit of the processing capability, the operation on the power receiving facility (HEMS 900) side may be affected.

  The processing capability of the power conversion device 200 includes not only a simple upper limit of current amount (so-called upper limit value that leads to overload due to overcurrent) but also a current change amount per unit time (hereinafter, “current change rate”). It is necessary to consider. That is, even if the current amount is at a level that does not cause an overload, if the current change rate increases due to a rapid increase in power consumption of the load 1000, the output capability of the power conversion device 200 cannot catch up, and the power supply quality may deteriorate. is there.

  Therefore, in the power supply system according to the first embodiment, as described below, the control process in the power feeding mode is performed so that the output current of the power conversion device 200 is limited so as not to exceed the upper limit value of the current change rate.

  2 and 3 are flowcharts illustrating a control operation in the power supply mode of the vehicle in the power supply system according to the first embodiment of the present invention.

  FIG. 2 shows control processing on the vehicle 100 side. The control operation according to the flowchart shown in FIG.

  Referring to FIG. 2, ECU 300 confirms whether or not the start of the power supply mode is instructed in step S100. When the power supply mode instruction has been started (YES in S100), ECU 300 proceeds to step S110 to check whether or not cable 400 is normally connected. When the connection of the cable 400 is not normal (when NO is determined in S110), the ECU 300 does not start the power supply mode control operation described below.

  When ECU 300 is instructed to start the power supply mode and inlet 220 is normally connected to HEMS 900 via cable 400 (YES in S110), the process proceeds to step S120 between vehicle 100 and HEMS 900. Establish communication with. Specifically, ECU 300 activates communication unit 310 shown in FIG. 1 and executes an initial operation for establishing a communication state with communication unit 920 of HEMS 900.

  When communication with HEMS 900 is established, ECU 300 transmits parameters related to the power feeding operation from vehicle 100 to HEMS 900 in step S130. This parameter includes the frequency and effective value of the voltage and current output in the power supply mode. Further, in step S130, an upper limit value (hereinafter also referred to as a power supply upper limit value) regarding the output capability of power conversion device 200 in the power supply mode is transmitted. In the example of FIG. 2, the current change rate upper limit value Icrmax indicating the maximum value of the allowable current change rate is transmitted as the power supply upper limit value.

  When the transmission of the power supply upper limit value is completed, ECU 300 activates power conversion device 200 and starts power supply from vehicle 100 in step S140. During power feeding, ECU 300 performs voltage control at step S150 so that output voltage Vac of power conversion device 200 has a desired frequency and amplitude. For example, AC voltage Vac is controlled to have a frequency and amplitude equivalent to the AC voltage from commercial power supply 800.

  ECU 300 repeatedly executes power supply control in step S150 until the end of power supply mode is instructed (NO determination in S190). Thereby, the voltage-controlled output voltage (AC voltage Vac) is supplied from the vehicle 100 to the HEMS 900 via the cable 400. When instructed to end the power supply mode (YES determination in S190), ECU 300 stops the power supply operation by power conversion device 200. Thereby, the power supply from the vehicle 100 to the HEMS 900 is also stopped.

  FIG. 3 shows the control operation on the HEMS 900 side. The control operation according to the flowchart shown in FIG.

  Referring to FIG. 3, controller 990 determines whether or not the start of the power supply mode is instructed in step S200, and determines whether or not connection of cable 400 is normal in step S210.

  When controller 990 is instructed to start the power supply mode (YES in S200) and charge / discharge connector 910 is normally connected to vehicle 100 by cable 400 (YES in S210), in step S220, , Establish communication between HEMS 900 and vehicle 100. The processes in steps S200 to S220 are executed almost simultaneously with the processes in steps S100 to S120 in the vehicle 100 in response to the start instruction of the power supply mode by the user.

  When communication with the vehicle 100 is established, the controller 990 receives a parameter related to the power feeding operation transmitted from the vehicle 100 in step S230. Thereby, the controller 990 acquires the current change rate upper limit value Icrmax as the power supply upper limit value of the power conversion device 200 in the power supply mode.

  After obtaining the power supply upper limit value, controller 990 starts receiving power from vehicle 100 in step S240. For example, by operating AC / DC converter 930, a path for receiving power from vehicle 100 is formed.

  During power reception, the controller 990 repeatedly executes the processes of steps S250 to S280 described below until the end of the power supply mode is instructed (NO determination in S290). In step S250, the controller 990 detects the input voltage VL and the input current IL to the HEMS 900 using the sensors 904 and 906. Further, in step S260, the controller 990 obtains a current change rate Icr that is a change amount of the input current IL in a certain time.

  Further, in step S270, controller 990 determines whether or not current change rate Icr acquired in step S260 is likely to exceed current change rate upper limit value Icrmax transmitted from vehicle 100. For example, the controller 990 sets a determination value having a margin with respect to the current change rate upper limit value Icrmax in advance, and compares the current change rate Icr acquired in step S260 with the determination value, so that Judgment can be performed.

  When it is determined that Icr is likely to exceed Icrmax (when YES is determined in S270), controller 990 controls power supply equipment (HEMS 900) to control power supply to load 1000 in step S280. Adjust the load. In the configuration of the HEMS 900 illustrated in FIG. 1, in step S280, the controller 990 controls the operation of the bidirectional PCS 945 so as to reduce the power supplied from the power line PL1 to the power line ACL3.

  As a result, the supply power from the power source of the vehicle 100 is limited with respect to the power consumption of the load 1000, while the supply power from other power sources such as the commercial power supply 800 is increased. The power balance is controlled. As a result, the change rate of the output current from the power conversion device 200 is limited so as not to exceed the upper limit of the output capability (current change rate upper limit value Icrmax), and then power is supplied to the power receiving facility (HEMS 900) including the load 1000. Can continue.

  On the other hand, when it is not determined that Icr is likely to exceed Icrmax (NO determination in S270), controller 990 skips the process of step S280. That is, the power supply by the output of the power conversion device 200 is continued without particularly adjusting the power balance in the HEMS 900.

  When the controller 990 is instructed to end the power supply mode (YES in S290), the controller 990 stops the power receiving operation from the vehicle 100. Thereby, the power supply from the vehicle 100 to the HEMS 900 is also stopped.

  Thus, according to the power supply system according to the first embodiment of the present invention, the rate of change of the output current of power conversion device 200 of vehicle 100 is limited so as not to exceed a predetermined upper limit value, and power is received from vehicle 100. Electric power can be supplied to the facility (HEMS 900). Therefore, in the power supply mode, by stabilizing the output state of the power conversion device 200, it is possible to stably supply power from the vehicle 100 to the power receiving facility (HEMS 900).

  In the flowcharts of FIGS. 2 and 3, the control for transmitting and receiving the power supply upper limit value before the start of power supply has been described as a preferred example. However, transmission / reception of the power supply upper limit value can receive the same effect even if it is executed after the start of power supply, as long as the output current change rate exceeds a predetermined upper limit value during the power supply mode. For example, it may be controlled to transmit / receive the power supply upper limit value triggered by the current change rate exceeding a certain level (a level having a margin with respect to the upper limit value) after the start of power supply. Even if it does in this way, it can restrict | limit so that the change rate of the output current of the power converter device 200 of the vehicle 100 may not exceed a predetermined | prescribed upper limit, and can supply electric power from the vehicle 100 to a power receiving installation.

  However, according to the control examples shown in FIG. 2 and FIG. 3, the power supply upper limit value is transmitted to the power receiving facility (HEMS 900) before the start of power feeding, and the output of the sensor provided in the power receiving facility is output during the power feeding mode. The AC voltage supplied from the vehicle to the power receiving facility can be stabilized by the control on the power receiving facility side. That is, there is an effect in that the power feeding can be stabilized without sequentially transferring information between the vehicle and the power receiving equipment during the power feeding mode.

  In general, the upper limit value of the output current change rate of power conversion device 200 is determined by the current drive capability of the power semiconductor switching element. Therefore, it is understood that the output current change rate is relatively low when a large current is output and relatively high when a low current is output. Therefore, as shown in FIG. 4, current change rate upper limit value Icrmax can be sequentially changed according to the output current of power conversion device 200.

  Referring to FIG. 4, current change rate upper limit value Icrmax can be set to a higher value as AC current Iac (effective value) output from power conversion device 200 is lower. In the configuration of FIG. 1, the alternating current Iac (effective value) can also be detected by a current sensor 906 arranged in the HEMS 900. That is, according to the input current IL detected by the current sensor 906, the current change rate upper limit value Icrmax can be set to be sequentially variable during the power feeding mode.

  FIG. 5 shows a flowchart for explaining a modification of the control operation on the power receiving facility side in the power feeding mode of the vehicle in the power supply system according to the first embodiment of the present invention.

  Comparing FIG. 5 with FIG. 3, the controller 990 further executes step S285 during power reception in addition to the processing of steps S200 to S280 similar to FIG. In step S285, controller 990 updates current change rate upper limit value Icrmax in accordance with the characteristics shown in FIG. 4 based on input current IL detected in step S250. Then, the updated current change rate upper limit value Icrmax is used for the determination in step S270 in the next control cycle (execution cycle of S250 to S285). Also in the control operation of FIG. 5, transmission / reception of the power supply upper limit value may be executed at an appropriate timing after the start of power supply instead of before the start of power supply.

  By updating the current change rate upper limit value Icrmax according to FIGS. 4 and 5, the current change rate upper limit value Icrmax can be sequentially and appropriately set according to the output state of the power conversion device 200. Thereby, power can be stably supplied from the vehicle 100 to the power receiving facility (HEMS 900) while maximizing the output capability of the power conversion device 200.

[Modification of Embodiment 1]
The modification of Embodiment 1 shows a modification of the configuration of the power receiving facility (HEMS).

  FIG. 6 is a schematic block diagram for illustrating a configuration example of a power supply system according to a modification of the first embodiment of the present invention.

  As understood from the comparison between FIG. 6 and FIG. 1, in the power supply system according to the modification of the first embodiment, HEMS900 # is provided as a power receiving facility instead of HEMS900.

  The HEMS 900 # differs from the HEMS 900 shown in FIG. 1 in that the load operation can be directly controlled so that the controller 990 adjusts the power consumption of the load 1000. For example, when the load 1000 is an air conditioner, the controller 990 adjusts the power consumption of the air conditioner by automatically changing the set temperature of the air conditioner.

  As a result, HEMS 900 # can adjust the power supplied from vehicle 100 without controlling the power balance in HEMS. Therefore, in HEMS 900 #, power line ACL2 connected to charge / discharge connector 910 can be connected to distribution board 950 without going through the power converter.

  Similar to HEMS 900, commercial grid power supply 800 is connected to distribution board 950 as a power source different from vehicle 100. Furthermore, the power storage device 940 and the solar cell 970 may be connected to the distribution board 950 via a power converter (bidirectional PCS 945 and PCS 975) as a further “power source different from the vehicle 100”. .

  In the power supply system according to the modification of the first embodiment, the control operation of the vehicle 100 in the power supply mode is the same as that shown in FIG. On the other hand, regarding the operation on the power receiving equipment (HEMS) side shown in FIGS. 3 and 5, the processing content in step S280 for adjusting the load on the power receiving equipment side is changed. As described in the first embodiment, transmission / reception of the power supply upper limit value may be executed at an appropriate timing after the start of power supply instead of before the start of power supply.

  The controller 990 of the HEMS 900 # can directly control the operation of the electric device that is the load 1000 so that the power consumption of the load 1000 is reduced in step S280. Alternatively, as in HEMS 900, the power balance in HEMS 900 # can be controlled so that the power supplied from a power source different from vehicle 100 such as commercial power supply 800 is increased.

  That is, in the HEMS 900 # shown in FIG. 6, the load adjustment on the power receiving facility side for controlling the power supply to the load 1000 so that the rate of change of the output current of the power converter 200 does not exceed a predetermined upper limit value. It is understood that the means increase.

  As a result, as in the power supply system according to the first embodiment, in the power supply mode, the output state of power conversion device 200 can be stabilized and power can be stably supplied from vehicle 100 to the power receiving facility (HEMS 900 #).

[Embodiment 2]
In the first embodiment, the example in which the current change rate upper limit value Icrmax of the power conversion device 200 is used as the power supply upper limit value in the power supply mode has been described. In the second embodiment, control when the upper limit value of the output current of the power conversion device 200 is used as the power supply upper limit value will be described.

  Note that the control operation in the power supply mode using the power supply upper limit value as shown in the second embodiment is the configuration of the power receiving equipment shown in FIG. 1 (first embodiment) and FIG. 6 (modified example of the first embodiment). It can be applied to both examples.

  FIG. 7 is a flowchart illustrating a control operation on the vehicle side in the power supply mode of the vehicle in the power supply system according to the second embodiment. A series of control operations shown in FIG. 7 is executed by ECU 300 instead of the control operation shown in FIG.

  As understood from the comparison between FIG. 7 and FIG. 2, ECU 300 executes step S130 # instead of step S130 of FIG. 2 as processing relating to transmission of the power supply upper limit value. The other steps S100 to S120, S140, S150, and S190 are the same as those in FIG.

  In step S130 #, ECU 300 transmits maximum current value Imax corresponding to the upper limit value of the output current of power conversion device 200 to the power receiving equipment (HEMS 900, 900 #) as a power supply upper limit value.

  Therefore, in the power supply system according to Embodiment 2, in the power supply mode of vehicle 100, the maximum current value Imax is transmitted in advance as the power supply upper limit value from vehicle 100 to the power receiving facility before the power supply operation is started. .

  FIG. 8 is a flowchart for explaining a control operation in the power receiving facility (HEMS 900, 900 #) in the power supply system according to the second embodiment. A series of control operations shown in FIG. 8 is executed by the controller 990 instead of the control operations shown in FIG. 3 or FIG.

  Referring to FIG. 8, after executing steps S200 to S220 similar to those in FIGS. 3 and 5, controller 990 obtains maximum current value Imax transmitted in step S130 # from vehicle 100 in step S230 #. Receive as value.

  After obtaining the power supply upper limit value, controller 990 starts receiving power from vehicle 100 in step S240. When the power reception is started, the controller 990 repeatedly executes the processes of steps S250, S272, S274, and S280 described below until the end of the power supply mode is instructed (NO determination in S290).

  In step S250, controller 990 detects input voltage VL and input current IL to HEMS 900 and 900 # based on the outputs of sensors 904 and 906. Further, in step S272, controller 990 determines whether or not the output state of power conversion device 200 of vehicle 100 is overloaded based on input voltage VL and input current IL.

  In step S272, the controller 990 determines whether or not the input current IL is likely to exceed the power supply upper limit (maximum current value Imax). For example, the determination in step S272 can be executed by setting a determination value having a margin with respect to the maximum current value Imax in advance and comparing the input current IL with the determination value.

  Furthermore, the controller 990 may determine overload based on whether or not the input voltage VL varies in step S274. For example, in step S274, it is determined based on the output of the voltage sensor 302 whether or not the input voltage VL that is an effective value is within a range of ± ε (%) with respect to the target value.

  When it is determined that the output state of power conversion device 200 is overloaded (when YES is determined in S272 or S274), controller 990 advances the process to step S280 to perform load adjustment on the power receiving equipment side. As described so far, in step S280, power balance control in HEMS 900, 900 # and / or direct operation control of load 1000 in HEMS 900 # can be performed.

  When the controller 990 is instructed to end the power supply mode (YES in S290), the controller 990 ends the operation for receiving power from the vehicle 100.

  As described above, in the power supply system according to Embodiment 2, the output current of power converter 200 of vehicle 100 is limited so as not to exceed the predetermined upper limit value (Imax), and power receiving equipment (HEMS900) is supplied from vehicle 100. , 900 #). Therefore, even when maximum current value Imax is used as the power supply upper limit value, power is received from vehicle 100 by stabilizing the output state of power conversion device 200 in the power supply mode, as in the power supply system according to the first embodiment. Power can be stably supplied to equipment.

  Note that, also in the power supply system according to the second embodiment, as in the first embodiment and the modifications thereof, the power supply mode is transmitted by transmitting the power supply upper limit value to the power receiving equipment (HEMS 900, 900 #) before starting the power supply. The power feeding can be stabilized without sequentially transferring information between the vehicle and the power receiving equipment. Alternatively, as described in the first embodiment and the modification thereof, transmission / reception of the power supply upper limit value may be executed at an appropriate timing after the start of power supply instead of before the start of power supply.

[Embodiment 3]
In the second embodiment, it is determined by the sensor of the power receiving facility (HEMS 900, 900 #) whether the output state of the power conversion device 200 requires load adjustment. In the third embodiment, a control operation in the power supply mode that can be backed up even when an abnormality occurs in the sensor on the power receiving facility side will be described. Note that the control operation in the power supply mode according to the third embodiment is also applied to both the configuration examples of the power receiving equipment shown in FIG. 1 (first embodiment) and FIG. 6 (modified example of the first embodiment). be able to.

  FIG. 9 is a flowchart illustrating a control operation on the vehicle side in the power feeding mode of the vehicle in the power supply system according to the third embodiment of the present invention. A series of control operations shown in FIG. 9 is executed by ECU 300 in place of the control operation shown in FIG. 7 (Embodiment 2).

  Referring to FIG. 9, ECU 300 transmits the maximum current value Imax to the power receiving equipment (HEMS 900, 900 #) as the power supply upper limit value prior to the start of power supply by the processing of steps S100 to S130 # similar to FIG. .

  Furthermore, when power supply is started (S140), ECU 300 repeatedly executes the processes of steps S150, S160, S172, and S182 shown below until the end of the power supply mode is instructed (NO determination in S190).

  The ECU 300 detects the output current Iac of the power converter 200 by the current sensor 304 in step S160 while performing voltage control (S150) for controlling the AC voltage Vac during power feeding. Further, in step S172, ECU 300 determines whether or not power converter 200 is likely to be overloaded based on AC current Iac detected in step S160. For example, the determination in step S172 can be executed by reflecting the maximum current value Imax as in step S272 of FIG.

  ECU 300 proceeds to step S182 to generate an overload alarm when power conversion device 200 is likely to be overloaded (YES determination in S172). The overload alarm generated in step S182 is transmitted by communication unit 310 to the power receiving facility (HEMS 900, 900 #). On the other hand, when no overload is detected (NO determination in S172), ECU 300 skips the process of step S182 for generating an overload alarm.

  As described above, in the power supply system according to the third embodiment, during the power feeding operation, the current sensor 304 provided in the vehicle 100 periodically checks whether the power conversion device 200 is overloaded. When power converter 200 is likely to be overloaded, an alarm can be output from vehicle 100 to power receiving equipment (HEMS 900, 900 #).

  FIG. 10 is a flowchart illustrating a control operation on the power receiving facility side in the vehicle power supply mode in the power supply system according to the third embodiment of the present invention. A series of control operations shown in FIG. 10 is executed by the controller 990 instead of the control operation shown in FIG. 8 (Embodiment 2).

  Referring to FIG. 10, controller 990 receives maximum current value Imax as a power supply upper limit value prior to the start of power reception through steps S200 to S230 # similar to FIG. Furthermore, when power reception is started (S240), ECU 300 repeatedly executes the processes of steps S250, S272, S274, S276, and S280 until the end of the power supply mode is instructed (NO determination in S290).

  That is, whether or not the controller 990 has received an overload alarm from the vehicle 100 in step S276 in addition to the determination based on the sensor on the power receiving equipment side in steps S250, S272, and S274 similar to FIG. Determine.

  Controller 990 determines that the output state of power conversion device 200 is overloaded by the sensor output of the power receiving facility (when YES is determined in S272 or S274), or receives an overload alarm from vehicle 100. If YES (YES in S276), the process proceeds to step S280. In step S280, the controller 990 performs load adjustment on the power receiving equipment side as described in FIG.

  On the other hand, the controller 990 overloads the output state of the power conversion device 200 by both the determination based on the power receiving equipment side sensor (S272, S274) and the determination based on the vehicle side sensor (S276). Is not determined (NO in S272, S274, and S276), the process of step S280 is skipped.

  Thus, in the power supply system according to the third embodiment, the output state of power conversion device 200 is complementarily checked by the sensor on vehicle 100 in addition to the determination by the sensor on power receiving facility (HEMS 900, 900 #). can do. As a result, even if an abnormality occurs in the sensor on the power receiving facility side, the output current of the power conversion device 200 of the vehicle 100 does not exceed a predetermined upper limit (Imax) based on an alarm from the vehicle side. The power can be supplied from the vehicle 100 to the power receiving facility (HEMS 900, 900 #).

  Therefore, according to the power supply system according to the third embodiment, it is possible to realize the stabilization of the output state of the power conversion device 200 in the power feeding mode with higher reliability, similar to the power supply system according to the second embodiment. it can. In the third embodiment, transmission / reception of the power supply upper limit value may be executed at an appropriate timing after the start of power supply instead of before the start of power supply.

[Modification of Embodiment 3]
In the third embodiment, the control process in the power feeding mode in which the control in the power feeding mode according to the second embodiment is combined with the alarm transmission from the vehicle side has been described. In the modification of the third embodiment, a control process in the power feeding mode in which the alarm transmission from the vehicle side is combined with the control in the power feeding mode according to the first embodiment will be described. The control process in the power supply mode according to the modification of the third embodiment is also applied to both the configuration examples of the power receiving equipment illustrated in FIG. 1 (the first embodiment) and FIG. 6 (the modification of the first embodiment). can do.

  FIG. 11 shows a flowchart for explaining the control operation on the vehicle side in the power feeding mode of the vehicle in the power supply system according to the modification of the third embodiment of the present invention. A series of control processing shown in FIG. 11 is executed by ECU 300 in place of the control processing shown in FIG. 2 (Embodiment 1).

  Referring to FIG. 11, ECU 300 transmits the current change rate upper limit value Icrmax to the power receiving facility (HEMS 900, 900 #) as the power supply upper limit value prior to the start of power supply by the processing of steps S100 to S130 similar to FIG. To do.

  Furthermore, when power supply is started (S140), ECU 300 repeatedly executes the processes of steps S150, S160, and S184 shown below until the end of the power supply mode is instructed (NO determination in S190).

  ECU 300 detects output current Iac of power conversion device 200 based on the output of current sensor 304 in step S160 while performing voltage control (S150) for controlling AC voltage Vac during power feeding. Further, in step S184, ECU 300 transmits AC current Iac detected in step S160 or current change rate Icr obtained from AC current Iac to power receiving equipment (HEMS 900, 900 #).

  In HEMS 900 and 900 #, a control process according to the flowchart shown in FIG. 3 or 5 described in the first embodiment is executed. The controller 990 not only calculates the current change rate Icr based on the detected value of the input current Ir in step S250 in step S260 of FIG. 3 or FIG. 5, but also determines the current change rate based on the received data from the vehicle 100. Icr can be acquired.

  Then, the controller 990 can execute the determination of the current change rate Icr in step S270 for both Icr based on the sensor output on the power receiving facility side and Icr based on the sensor output on the vehicle side.

  Therefore, in the power supply system according to the modification of the third embodiment, in addition to checking the current change rate Icr of power conversion device 200 with the sensor on the power receiving equipment (HEMS 900, 900 #) side, the sensor on the vehicle 100 side You can also check complementarily. As a result, even if an abnormality occurs in the sensor on the power receiving facility side, the current change rate of the power conversion device 200 of the vehicle 100 does not exceed a predetermined upper limit value (Icrmax) based on information from the vehicle. The power can be supplied from the vehicle 100 to the power receiving facility (HEMS 900, 900 #).

  Therefore, according to the power supply system according to the modified example of the third embodiment, the stabilization of the output state of the power conversion device 200 in the power feeding mode can be performed with higher reliability, similar to the power supply system according to the first embodiment. Can be realized. In the modification of the third embodiment, transmission / reception of the power supply upper limit value may be executed at an appropriate timing after the start of power supply instead of before the start of power supply.

  In the above embodiment, a plug-in type hybrid vehicle has been exemplified as a vehicle to which the present invention is applied. However, the configuration of the vehicle is such that power is output to a load outside the vehicle by output power from an on-vehicle power source. If it can supply, it will not specifically limit. That is, the power supply mode control according to the present embodiment can also be applied to series hybrid vehicles, electric vehicles, fuel cell vehicles, and the like. The type of the power source is not particularly limited as long as power can be output in the power supply mode.

  Further, the power receiving facility to which power is supplied from the vehicle in the power supply mode is not limited to the example in the embodiment, and any power consumption element can be applied. For example, the power supply mode control according to the present embodiment can also be applied to charging between vehicles using an in-vehicle power storage device of another vehicle as a load.

  Further, by combining Embodiments 1 and 2, it is determined whether load adjustment (S280) on the power receiving facility side is necessary for both the current change rate upper limit value Icrmax and the maximum current value Imax as the power supply upper limit value. You may control.

  Note that in this embodiment, the configuration in which the vehicle and the power receiving facility are electrically connected by the cable is illustrated, but the vehicle and the power receiving facility are electromagnetically coupled with each other in a non-contact manner to exchange power. A configuration is also possible. For example, a configuration in which a coil is provided on each of the power receiving facility side and the vehicle side and power is input / output by magnetic coupling between the coils or a resonance phenomenon may be used instead of the cable. In such a configuration, the on-board coil corresponds to the “power node”.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied to control for supplying power output from an on-vehicle power source to equipment outside the vehicle.

  DESCRIPTION OF SYMBOLS 100 Vehicle, 105 Power output device, 106 Engine, 107 Motor generator, 110 Power storage device (on-vehicle), 200 Power conversion device, 220 Inlet, 302 Voltage sensor (vehicle), 304 Current sensor (vehicle), 310 Communication unit (vehicle) , 400 cable, 410 connector, 415 operation unit, 417 selector switch, 420 plug, 440, ACL1, ACL2, ACL3, ACL4, ACL5, ACL5, PL1, PL4 power line, 800 commercial power supply, 900, 900 # power receiving equipment (HEMS ), 904 voltage sensor (power receiving equipment), 906 current sensor (power receiving equipment), 910 charge / discharge connector, 915 display unit, 920 communication unit (power receiving equipment), 930 converter, 940 power storage device (power receiving equipment), 950 power distribution Board, 9 0 solar cell, 990 controller, 1000 load, IL effective value, IL input current, Icr current change rate, Icrmax current change rate upper limit value, Imax maximum current value, 945 PCS (solar cell), 975 bidirectional PCS, VL input voltage .

Claims (21)

An electric vehicle having a power supply mode for outputting electric power to equipment outside the vehicle,
An on-board power source,
A power node for transferring power to and from the outside of the vehicle;
In the power supply mode, a power conversion device for converting the power supplied from the power source into power supplied to the facility and outputting the power to the power node;
An electric vehicle comprising: a notification unit configured to notify the facility of an upper limit value related to an output during power supply of the power conversion device in the power supply mode.   The electric vehicle according to claim 1, wherein the notifying unit notifies the facility of the upper limit value before supplying power by an output of the power converter.   The electric vehicle according to claim 1, wherein the upper limit value is a maximum value of a change amount of the output current of the power conversion device within a predetermined time.   The electric vehicle according to claim 1, wherein the upper limit value is a maximum value of an output current of the power conversion device. An on-vehicle power source and a power receiving facility configured to receive power from an electric vehicle including a power conversion device for converting power from the power source into power supplied to the outside of the vehicle in a power supply mode,
In the power supply mode, an acquisition means for acquiring an upper limit value related to an output during power supply of the power converter from the vehicle;
Control means for controlling power supply to an electric load that operates by receiving power from the power receiving equipment so that the output state of the power conversion device is limited according to the upper limit value based on the acquired upper limit value. And a power receiving facility.   The power receiving facility according to claim 5, wherein the acquisition unit acquires the upper limit value before supplying power from the vehicle to the power receiving facility. A detector for detecting at least one of voltage and current supplied from the electric vehicle;
The control means controls power supply to an electric load that operates by receiving power from the power receiving facility so that an output state of the power conversion device is limited according to the upper limit value based on an output of the detector. The power receiving facility according to claim 5 or 6. Means for obtaining information about the output state of the power converter from the electric vehicle during the power feeding;
The control means is operated by receiving power from the power receiving facility based on the output of the detector and the information acquired from the electric vehicle so that the output state of the power converter is limited according to the upper limit value. The power receiving facility according to claim 7, wherein power supply to an electric load is controlled. The power receiving facility is:
The power receiving facility according to any one of claims 5 to 8, comprising a controller for controlling an operation of the electric load so that an output state of the power conversion device is limited according to the upper limit value. The power receiving facility is:
A first path through which electric power from the electric vehicle is supplied, a second path through which electric power is supplied from a power source different from the electric vehicle, and a distribution board electrically connected to the electric load;
The controller for controlling the electric power supplied to the said distribution board from the said 1st path | route so that the output state of the said power converter device may be restrict | limited according to the said upper limit. The power receiving facility according to claim 1.   The power receiving facility according to any one of claims 5 to 10, wherein the upper limit value is a maximum value of a change amount of the output current of the power converter within a certain time.   The power receiving facility according to any one of claims 5 to 10, wherein the upper limit value is a maximum value of an output current of the power conversion device. An electric vehicle including an on-vehicle power source;
In a power supply mode in which the electric vehicle outputs electric power to the outside of the vehicle, the electric vehicle includes a power receiving facility configured to be supplied with electric power from the electric vehicle,
The electric vehicle is
A power node for transferring power to and from the outside of the vehicle;
In the power supply mode, a power conversion device for converting power from the power source into power supplied to the facility;
In the power supply mode, further includes notification means for notifying the facility of an upper limit value related to the output during power supply of the power converter,
The power receiving facility is:
In the power feeding mode, an acquisition means for acquiring the upper limit value from the vehicle;
Control means for controlling power supply to an electric load that operates by receiving power from the power receiving equipment so that the output state of the power conversion device is limited according to the upper limit value based on the acquired upper limit value. And a power supply system. The notification means notifies the facility of the upper limit value before supplying power by the output of the power converter in the power supply mode,
The power supply system according to claim 13, wherein the acquisition unit acquires the upper limit value from the vehicle before the power is supplied in the power supply mode. The power receiving facility is:
A detector for detecting at least one of a voltage and a current supplied from the electric vehicle;
The said control means controls the electric power supply to the said electric load so that the output state of the said power converter device may be restrict | limited according to the said upper limit based on the output of the said detector. Power supply system. The electric vehicle is
Means for outputting information on the output state of the power converter to the electric vehicle during the power feeding;
The power receiving facility is:
Means for obtaining the information from the electric vehicle during the power feeding;
The control means supplies power to the electric load based on the output of the detector and the information acquired from the electric vehicle so that the output state of the power converter is limited according to the upper limit value. The power supply system according to claim 15, wherein the power supply system is controlled. The power receiving facility is:
The power supply system according to any one of claims 13 to 16, further comprising a controller for controlling an operating state of the electric load so that an output state of the power converter is limited according to the upper limit value. The power receiving facility is:
A first path through which electric power from the electric vehicle is supplied, a second path through which electric power is supplied from a power source different from the electric vehicle, and a distribution board electrically connected to the electric load;
The controller for controlling the electric power supplied to the said distribution board from the said 1st path | route so that the output state of the said power converter device may be restrict | limited according to the said upper limit. The power supply system according to claim 1.   The power supply system according to any one of claims 13 to 18, wherein the upper limit value is a maximum value of a change amount of the output current of the power converter within a certain time.   The power supply system according to any one of claims 13 to 18, wherein the upper limit value is a maximum value of an output current of the power converter.   The power supply system according to any one of claims 13 to 20, wherein the power node and the power receiving facility are electrically connected by a cable.

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