JP2013110912A - Power storage system, and control device of vehicle mounted with power storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve user convenience by giving priority to power supply with respect to commercial power of a power storage system mounted in a vehicle.SOLUTION: The power storage system mounted in the vehicle includes: a power storage device for charging and discharging; a power conversion unit for converting power from the power storage device to output commercial power; and a control unit for controlling power supply with respect to a vehicle demand output corresponding to load operating by receiving power from the power storage device and a commercial power demand output corresponding to an external device operating by receiving commercial power, respectively. When a user operation which gives priority to supply of commercial power to the external device is performed, the control unit calculates an upper limit value of power supply with respect to the vehicle demand output corresponding to power supply with respect to the commercial power demand output from an upper output limit value of the power storage device and controls power supply with respect to the vehicle demand output by limiting it to the calculated upper limit value.

Description

  The present invention relates to a power storage system, and more particularly to output control of a power storage system used as a commercial AC power supply that is supplied to a vehicle running power supply and an external device connected to an outlet provided in the vehicle.

  Patent Document 1 uses a power supply device that supplies power to a vehicle driving motor or a power consuming device such as an air conditioner or an electronic device mounted on the vehicle as a commercial AC power source, and via an outlet provided in the vehicle interior. The AC power is output to the connected external device, and the output of the commercial AC power source is limited based on the SOC of the power supply device and the power consumption of the external device.

  In Patent Document 1, power supply to an external device connected via an outlet can be performed up to a predetermined upper limit value when the SOC is high, and power supply to the external device is prohibited when the SOC is low. Instead, the upper limit value of the power output to the external device is lowered to supply at low power.

JP 2004-282837 A JP 2004-236472 A JP 2008-312395 A JP 2009-225587 A

  However, as disclosed in Patent Document 1, even when the power supply device has a low SOC and the low power supply to the external device is permitted and the power supply to the external device is ensured, for example, If the required vehicle output output to power consuming equipment such as an air conditioner or electronic device mounted on the vehicle is about the same as the maximum output of the power supply device, in other words, most of the maximum output of the power supply device is the vehicle required output. When it is used, power that can be supplied to the external device cannot be secured, and thus power cannot be supplied to the external device.

  In other words, conventionally, priority is given to the power supply for the vehicle required output, so the power supply to the external device cannot be performed even if priority is given to the output to the external device due to the relationship of the vehicle required output to the maximum output of the power supply device. A situation arises and the use of commercial AC power is limited.

  The power storage system mounted on the vehicle according to the first aspect of the present invention includes a power storage device that performs charging / discharging, a power conversion unit that converts power from the power storage device and outputs commercial power, and power received from the power storage device. And a control unit that performs power supply control with respect to each of the vehicle required output corresponding to the operating load and the commercial power required output corresponding to the external device operating in response to the commercial power. When there is a user operation that prioritizes the supply of commercial power to an external device, the control unit sets an upper limit value of power supply for the vehicle request output according to the power supply for the commercial power request output from the output upper limit value of the power storage device. Calculation is performed, and power supply control is performed on the required vehicle output by limiting to the calculated upper limit value.

  According to the first invention of this application, when the commercial power priority mode is selected by the user's operation, priority is given to the power supply to the commercial power, and the power supply to the vehicle request output is suppressed with respect to the output upper limit value of the power storage device. Thus, commercial power can be ensured and user convenience can be improved.

  The control unit can calculate the difference between the output upper limit value of the power storage device and the commercial power request output as the power supply upper limit value for the vehicle request output.

  A selection switch for prioritizing supply of commercial power to an external device operated by a user can be further provided.

  As the load, a motor / generator that receives power from the power storage device and generates kinetic energy used for traveling of the vehicle, or a power consuming device that operates by receiving power from the power storage device mounted on the vehicle can be used.

  A control device for a vehicle equipped with a power storage system according to the second aspect of the present invention receives a vehicle request output corresponding to a load that operates by receiving power from a power storage device that performs charging and discharging, and receives power from the power storage device as commercial power. A control unit that performs power supply control with respect to each of the commercial power request outputs corresponding to the external devices that operate. When there is a user operation that prioritizes the supply of commercial power to an external device, the control unit sets an upper limit value of power supply for the vehicle request output according to the power supply for the commercial power request output from the output upper limit value of the power storage device. Calculation is performed, and power supply control is performed on the required vehicle output by limiting to the calculated upper limit value.

1 is a configuration block diagram of a battery system mounted on a vehicle. It is a figure which shows the relationship between the maximum output of an assembled battery, and SOC. It is a figure which shows the relationship between the maximum output of an assembled battery, and temperature. It is the figure which showed the relationship of the commercial power with respect to the largest output of an assembled battery, and a vehicle request | requirement output. It is a figure which shows the example of calculation of the limit value of the vehicle request output with respect to the maximum output of the assembled battery which gave priority to commercial power. It is the figure which showed the relationship of the commercial electric power with respect to the largest output of an assembled battery, and the vehicle request output restrict | limited. It is a flowchart which shows the electric power supply control of an assembled battery. It is a figure which shows the example of calculation of the limit value of commercial electric power with respect to the maximum output of the assembled battery which gave priority to vehicle request output.

  Examples of the present invention will be described below.

Example 1
A battery system (corresponding to a power storage system) that is Embodiment 1 of the present invention will be described. FIG. 1 is a block diagram showing the configuration of the battery system according to this embodiment. The battery system of the present embodiment supplies electric power for vehicle travel and commercial AC power of an external device connected to an outlet provided in the vehicle, and can be mounted on the vehicle. Vehicles include hybrid cars and electric cars. The hybrid vehicle includes an engine or a fuel cell as a power source for running the vehicle, in addition to the assembled battery described later. An electric vehicle includes only an assembled battery as a power source for the vehicle.

  The assembled battery 10 can be composed of, for example, a plurality of single cells connected in series. As the single battery, a secondary battery such as a nickel metal hydride battery or a lithium ion battery can be used. An electric double layer capacitor (capacitor) can be used instead of the secondary battery. The number of single cells constituting the assembled battery 10 can be appropriately set based on the required output. The assembled battery 10 may include a plurality of unit cells connected in parallel.

  The assembled battery 10 is connected to the boost converter 23 via a connection line. A system main relay 21 is provided between the positive terminal of the assembled battery 10 and the boost converter 23, and a system main relay 22 is provided between the negative terminal of the assembled battery 10 and the boost converter 23. The system main relays 21 and 22 are switched between on (connected state) and off (cut off state) in response to a control signal from the controller 50.

  The voltage sensor 11 detects the voltage between the terminals of the assembled battery 10. Moreover, the voltage of each unit cell connected in series constituting the assembled battery 10 can also be detected. The voltage sensor 11 is connected to the controller 50 and outputs a detection result to the controller 50. The current sensor 12 detects the charging / discharging current of the assembled battery 10 that performs charging / discharging, and outputs the detection result to the controller 50. In addition, the current sensor 21 detects an external charging current flowing through the assembled battery 10 via a charger 30 described later, and outputs a detection result to the controller 50. The temperature sensor 13 detects the temperature of the assembled battery 10. The temperature sensor 13 is connected to the controller 50 and outputs a detection result to the controller 50.

  Boost converter 23 boosts the output voltage of battery pack 10 and outputs the boosted power to inverter 24. Further, the boost converter 23 steps down the output voltage of the inverter 24 and outputs the lowered power to the assembled battery 10. The step-up converter 23 can be composed of, for example, a chopper circuit. Boost converter 23 operates in response to a control signal from controller 50.

  The inverter 24 converts the DC power output from the boost converter 23 into AC power, and outputs the AC power to the motor generator (MG) 25. For example, a three-phase AC motor can be used as the motor / generator 25. The inverter 24 converts AC power output from the motor / generator 25 into DC power and outputs the DC power to the boost converter 23.

  The motor / generator 25 receives AC power from the inverter 24 and generates kinetic energy for running the vehicle. The motor / generator 25 is connected to wheels, and the kinetic energy generated by the motor / generator 25 is transmitted to the wheels. When the vehicle is decelerated or stopped, the motor / generator 25 converts kinetic energy generated during braking of the vehicle into electric energy (AC power). The AC power generated by the motor / generator 25 is output to the inverter 24. Thereby, regenerative electric power can be stored in the assembled battery 10.

  In the battery system of this embodiment, the boost converter 23 is used, but the boost converter 23 may be omitted. That is, the assembled battery 10 can be connected to the inverter 24.

  The DC / DC converter 26 is connected between the boost converter 23 and the assembled battery 10, and an auxiliary device 27 (power consuming device) that operates by receiving the electric power of the assembled battery 10 is connected. The DC / DC converter 26 steps down the current voltage output from the assembled battery 10 to a predetermined current voltage and outputs it to the auxiliary device 27. The auxiliary machine 27 is, for example, a passenger compartment air conditioner (such as an air conditioner inverter or a motor) mounted on a vehicle, an AV device, a lighting device, or the like. The power supplied from the assembled battery 10 to the auxiliary machine 27 is controlled by the controller 50. The battery system of this embodiment includes a motor / generator 25 and an auxiliary machine 27 as loads.

  The charger 30 is connected to the assembled battery 10. The charger 30 boosts an AC / DC converter (not shown) that converts AC power supplied from the external power source 60 into DC power, an external charging current (DC current) that is output from the external power source 60 or the AC / DC converter. DC / DC converter etc. which output to the assembled battery 10 can be included. As the external power source 60, for example, a commercial power source can be used.

  A charging relay 31 is provided on the current path between the charger 30 and the positive terminal of the assembled battery 10, and a charging relay 32 is provided on the current path between the charger 30 and the negative terminal of the assembled battery 10. Yes. The charge relays 31 and 32 are switched between ON (corresponding to a connected state) and OFF (corresponding to a cut-off state) in response to a control signal from the controller 50.

  The charger 30 is connected to an inlet 35 provided on a side portion of a vehicle on which the battery system of this embodiment is mounted. A charging cable 62 having a connection plug 61 connected to an external power source 60 is connected to the inlet 35.

  The DC / AC inverter 40 is connected between the battery pack 10 and the step-up converter 23, and converts the DC voltage output from the battery pack 10 into a commercial AC voltage (for example, AC 100V) corresponding to an external device. It is a vessel. The DC / AC inverter 40 outputs commercial power such as AC 100 V to an external device 42 connected to an accessory outlet 41 provided in the passenger compartment.

  The accessory outlet 41 is an output unit that outputs commercial power to the external device 42, and is an insertion port connected to a connection terminal (plug) of the external device 42. One or a plurality of accessory outlets 41 can be provided in a vehicle including a boarding space where passengers can get on and off and a luggage space for storing luggage and the like.

  The external device 42 is a device provided separately from the vehicle, and operates by receiving commercial power output from the DC / AC inverter 40 via the accessory outlet 41. Examples of the external device 42 include home appliances.

  The commercial power switch 43 is a switch operated by the user from within the vehicle. For example, when the commercial power switch 43 is turned ON by the user, the DC / AC inverter 40 allows commercial power supply to the external device 42 via the accessory outlet 41 and is turned OFF, so that the accessory outlet The commercial power supply to the external device 42 via 41 is stopped (prohibited). An ON / OFF operation signal of the commercial power switch 43 is output to the controller 50 via the DC / AC inverter 40, and the controller 50 passes through the DC / AC inverter 40 based on the ON / OFF of the commercial power switch 43. Supply control of commercial power.

  The commercial power switch 43 functions as a selection switch for the user to select a commercial power priority mode (priority of commercial power when the user uses an accessory outlet). For example, when the user turns on the commercial power switch 43, the commercial power priority mode can be turned on by pressing and holding the commercial power switch 43. Further, when turning off the commercial power priority mode, the commercial power priority mode can be turned off by pressing and holding the commercial power switch 43 when the user performs an OFF operation. The commercial power priority mode ON / OFF signal is output from the commercial power switch 43 to the controller 50 via the DC / AC inverter 40 or directly. In addition to the commercial power switch 43, a switch for selecting the commercial power priority mode may be provided.

  The controller 50 is a control device that performs input / output control of the battery system. The controller 50 calculates a vehicle required output corresponding to a load required for the entire vehicle, and supplies a vehicle required output control for supplying the electric power stored in the assembled battery 10 to the boost converter 23 and / or the DC / DC converter 26; Power consumption of the external device 42 connected to the accessory outlet 41 is calculated, and power supply control is performed to output the power stored in the assembled battery 10 to the DC / AC inverter 40 (external device 42).

  The vehicle required output can include travel power supplied to the motor / generator 25 via the boost converter 23 and power supplied to the auxiliary machine 27 via the DC / DC converter 26. The controller 50 can also perform external charging control for charging the assembled battery 10 with the power of the external power supply 60 via the charger 30. When the controller 50 detects that the connection plug 61 extending from the external power source 60 is connected to the inlet 35, the controller 50 switches the charging relays 31 and 32 from off to on to connect the charger 30 and the assembled battery 10. External charging through the charger 30 is performed.

  The controller 50 regenerates power during vehicle braking when the vehicle decelerates or stops, along with discharge control that outputs the power of the assembled battery 10 to the motor / generator 25 (boost converter 23) based on the vehicle request output. The charging control for charging the assembled battery 10 can be performed. In the case of a hybrid vehicle, the controller 50 is configured as a control device that calculates a required vehicle output required for the entire vehicle and performs output control of the engine and / or battery system based on the required vehicle output.

  The controller 50 calculates the maximum output of the assembled battery 10 in performing the power supply control for the vehicle required output and the power supply to the external device 42, and within the range of the calculated maximum output of the assembled battery 10, the vehicle required output and Distributes power for each power consumption of external devices.

  The controller 50 can calculate the maximum output (output upper limit value) of the assembled battery 10 based on at least one of the SOC of the assembled battery 10 and the battery temperature.

  The SOC (State of Charge) indicates the ratio of the current charge capacity to the full charge capacity of the assembled battery, and the controller 50 uses the detection result of the voltage sensor 11 to manage the SOC of the assembled battery 10. Processing for calculating or specifying the SOC of the battery pack 10 can be performed, and SOC information can be stored and managed.

  The SOC of the assembled battery 10 can be specified from the OCV (Open Circuit Voltage) of the assembled battery 10. Since SOC and OCV are in a correspondence relationship, if this correspondence relationship is obtained in advance, the SOC can be specified from the OCV. The OCV of the assembled battery 10 can be calculated from the CCV (terminal voltage: Closed Circuit Voltage) of the assembled battery 10 detected by the voltage sensor 11. On the other hand, the SOC of the battery pack 10 can be calculated by detecting the charge / discharge current of the battery pack 10 using the current sensor 12 and integrating the current values at the time of charge / discharge of the battery pack 10. The controller 50 calculates the SOC of the battery pack 10 using the detection results of the voltage sensor 11 and the current sensor 12.

  FIG. 2 is a diagram showing the relationship between the maximum output of the battery pack 10 and the SOC. As shown in FIG. 2, the maximum output increases as the SOC of the battery pack 10 increases, and the maximum output of the battery pack 10 is constant at a predetermined upper limit value for SOCs of C1 or higher. On the other hand, with an SOC lower than C1, the maximum output decreases as the SOC of the battery pack 10 decreases, and the maximum output is limited.

  FIG. 3 is a diagram showing the relationship between the maximum output of the battery pack 10 and the temperature. As shown in FIG. 3, the maximum output increases as the battery temperature of the assembled battery 10 increases, and the maximum output of the assembled battery 10 is constant at a predetermined upper limit value in the range from the temperature t1 to the temperature t2. On the other hand, at the battery temperature lower than the temperature t1, the maximum output of the assembled battery 10 becomes small and the maximum output is limited. Even at a battery temperature higher than the temperature t2, the maximum output of the assembled battery 10 becomes small, and the maximum output is limited.

  Each relationship between the maximum output, the SOC, and the battery temperature shown in FIG. 2 and FIG. 3 can be held in advance by the controller 50 as a maximum output calculation map of the assembled battery 10, and the controller 50 calculated by the controller 50 Based on the SOC of the assembled battery 10 and the battery temperature detected by the temperature sensor 13, the maximum output of the assembled battery 10 can be calculated. 2 and 3, the individual maximum output calculation maps are illustrated for the SOC and battery temperature of the assembled battery 10, but the maximum output indicating the relationship between the maximum output and the SOC and battery temperature of the assembled battery 10. A calculation map may be held in advance, and the maximum output of the assembled battery 10 may be calculated from the SOC of the assembled battery 10 and the battery temperature.

  FIG. 4 is a diagram illustrating the relationship between the commercial power and the vehicle required output with respect to the maximum output of the assembled battery 10. The output power P3 is an output value of the assembled battery 10 with respect to the vehicle required output P2 and the commercial power P1 supplied to the external device 42, and is a total value of the vehicle required output P2 and the commercial power P1.

  As shown in FIG. 4, the controller 50 sets the calculated maximum output Px as the output upper limit value of the assembled battery 10, and performs power supply control for the vehicle request output P2 and the commercial power P1 within the range of the output upper limit value Px. Do. In the example shown in FIG. 4, the controller 50 indicates output control of the assembled battery 10 in which the vehicle required output P2 and the output power P3 of the entire commercial power P1 are within the range of the output upper limit value Px of the assembled battery 10. Yes.

  As shown in FIGS. 2 and 3, the maximum output of the assembled battery 10 is limited to be low when the SOC of the assembled battery 10 is low or the battery temperature is low or high. For this reason, in the case where the vehicle required output is about the same as the maximum output, the total value of the vehicle required output and the commercial power exceeds the maximum output of the assembled battery 10, and therefore at least one or both of the vehicle required output and the commercial power is required. The amount of power supply must be limited.

  As described above, in the prior art, priority is given to the power supply for the vehicle required output, and when most of the maximum output of the assembled battery 10 is used for the vehicle required output, it is not possible to secure the power that can be supplied to the external device 42. Even when it is not possible to supply power to the external device 42 and it is desired to prioritize the output of commercial power, a situation in which power cannot be supplied to the external device 42 occurs, and the use of commercial power is restricted.

  In the present embodiment, when the commercial power priority mode is selected by the user's operation, the power supply for the commercial power is prioritized, the power supply for the vehicle request output is limited, and the power supply to the external device 42 is prioritized. Improve user convenience.

  FIG. 5 is a diagram illustrating a calculation example of the limit value of the vehicle request output with respect to the maximum output of the assembled battery 10 giving priority to the commercial power. In the present embodiment, the remaining power that secures commercial power out of the calculated maximum output of the assembled battery 10 is set as the limit value of the vehicle required output, and the controller 50 is not the maximum output of the assembled battery 10 but the commercial power. The power supply control for the required vehicle output is performed within a range in which the limit value of the required vehicle output with priority given to the upper limit is set.

  The controller 50 calculates power consumption of the external device 42 connected to the accessory outlet 41 and calculates necessary commercial power (commercial power request output). The controller 50 can calculate the power obtained by subtracting the calculated commercial power from the maximum output of the assembled battery 10 as shown in FIG. 5 as a limit value for the vehicle required output.

  FIG. 6 is a diagram showing the relationship between the commercial power and the limited vehicle required output with respect to the maximum output of the battery pack 10. As shown in FIG. 6, the controller 50 does not limit the power supply for the commercial power, and the vehicle required output is set so that the vehicle required output falls within the range of the limit value Pa lower than the maximum output Px of the assembled battery 10. Power supply control is performed to limit the power supply to the.

  FIG. 7 is a diagram showing a flowchart of power supply control of the battery system of the present embodiment. The power supply control is performed by the controller 50. When the ignition switch of the vehicle is switched from OFF to ON, the battery system is activated, and the controller 50 starts power supply control of the battery system.

  The controller 50 switches the system main relays 21 and 22 from OFF to ON as the battery system is activated, and connects the assembled battery 10 to the boost converter 23, the DC / DC converter 26, and the DC / AC inverter 40. In the power supply control of the present embodiment, power is supplied to the auxiliary machine 27 via the DC / DC converter 26 while the vehicle is stopped after starting the battery system, as well as during EV driving where the vehicle is driven by the power supplied from the assembled battery 10. Performed when supplying.

  In step S <b> 101, the controller 50 acquires the SOC information of the assembled battery 10 and / or the detection result of the temperature sensor 13 calculated from the detection results of the voltage sensor 11 and the current sensor 12. In step S102, the controller 50 calculates the maximum output of the assembled battery 10 from the acquired SOC information and / or battery temperature.

  In step S103, the controller 50 determines whether or not the commercial power switch 70 is turned on. When the commercial power switch 70 is ON, the process proceeds to step S104, and the controller 50 further determines whether or not the commercial power priority mode is selected.

  If it is determined in step S104 that the commercial power priority mode is selected, the process proceeds to step S105, and the controller 50 calculates the power consumption of the external device 42 connected to the accessory outlet 41.

  In step S106, the controller 50 calculates the upper limit value of the power supply amount for the vehicle required output based on the power consumption of the calculated external device 42 and the maximum output of the assembled battery 10 calculated in step S102. For example, the upper limit value of the power supply amount for the vehicle required output can be calculated by subtracting the power consumption of the external device 42 calculated from the maximum output of the assembled battery 10.

  In step S107, the controller 50 sets the upper limit value of the power supply amount for the calculated vehicle request output as a power supply limit value for the vehicle request output giving priority to power consumption (commercial power) to the external device 42.

  In step S108, the controller 50 supplies electric power to the commercial power while supplying electric power to the vehicle required output so as to be within the range of the electric power supply limit value for the set required vehicle output.

  If it is determined in step 103 that the commercial power switch 70 is OFF, since the power supplied to the external device 42 is 0, the controller 50 proceeds to step S110 and the upper limit value of the power supply amount for the vehicle required output. Is set to the maximum output (output upper limit value) of the battery pack 10. When the calculated value of the power consumption of the external device 42 connected to the accessory outlet 41 is 0 in step S105, the controller 50 indicates that the maximum output of the assembled battery 10 is the upper limit value of the power supply amount with respect to the vehicle required output. Therefore, as in step S110, the upper limit value of the power supply amount for the vehicle required output is set to the maximum output (output upper limit value) of the assembled battery 10 in step S107.

  If it is determined in step 104 that the commercial power priority mode is not selected, the process proceeds to step S109, and power supply control is performed in which the power supply for the commercial power is restricted by giving priority to the power supply for the vehicle request output. Can do.

  FIG. 8 is a diagram illustrating a calculation example of the limit value of the commercial power with respect to the maximum output of the assembled battery 10 that prioritizes the vehicle request output. As shown in FIG. 8, when the difference between the maximum output of the assembled battery 10 and the vehicle output request is smaller, the commercial power is limited. For example, the vehicle required output exceeds Pa (Px−P1) and As the maximum output is approached, commercial power is limited lower.

  In step S109, the controller 50 calculates a difference between the maximum output of the assembled battery 10 and the vehicle output request, sets the calculated difference as a limit value of commercial power, and sets the set limit value as an upper limit value. The power supply control for the commercial power can be performed.

  As described above, in the power supply control of this embodiment, when the commercial power priority mode is selected by the user's operation, the power supply with respect to the commercial power is prioritized and the power with respect to the vehicle request output with respect to the output upper limit value of the power storage device. Supply can be suppressed (restricted) to secure commercial power, and user convenience can be improved.

10 assembled battery 11 voltage sensor 12 current sensor 13 temperature sensor 23 step-up converter 24 inverter 25 motor generator (MG)
26 DC / DC converter 27 Auxiliary machine 30 Charger 40 DC / AV inverter 41 Accessory outlet 42 External device 50 Controller 60 External power supply 70 Commercial power switch

Claims (5)

A power storage system mounted on a vehicle,
A power storage device for charging and discharging; and
A power conversion unit that converts power from the power storage device and outputs commercial power;
A control unit that performs power supply control for each of a vehicle request output according to a load that operates by receiving power from the power storage device and a commercial power request output according to an external device that operates by receiving commercial power, and
When there is a user operation that prioritizes the supply of commercial power to the external device, the control unit powers the vehicle request output according to the power supply from the output upper limit value of the power storage device to the commercial power request output. A power storage system that calculates an upper limit value of supply and performs power supply control on the vehicle request output by limiting to the calculated upper limit value.   The power storage system according to claim 1, wherein the control unit calculates a difference between an output upper limit value of the power storage device and the commercial power request output as an upper limit value of power supply with respect to the vehicle request output.   The power storage system according to claim 1, further comprising a selection switch for prioritizing supply of commercial power to the external device operated by a user.   The load is at least one of a motor / generator that receives electric power from the power storage device and generates kinetic energy used for traveling of the vehicle and a power consuming device that operates by receiving power from the power storage device mounted on the vehicle. The power storage system according to any one of claims 1 to 3, further comprising: A control device for a vehicle equipped with a power storage system,
Electric power supply control for a vehicle required output corresponding to a load that operates by receiving power from a power storage device that performs charging and discharging, and a commercial power request output that corresponds to an external device that operates by receiving power from the power storage device as commercial power A control unit for performing
When there is a user operation that prioritizes the supply of commercial power to the external device, the control unit powers the vehicle request output according to the power supply from the output upper limit value of the power storage device to the commercial power request output. A control device that calculates an upper limit value of supply and performs power supply control on the vehicle required output by limiting to the calculated upper limit value.

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