JP2014090526A - Energy management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an engine exhaust gas from being filled in a garage when a vehicle parked in the garage is used as an in-house power supply source.SOLUTION: When the vehicle parked in the garage is used as an in-house power supply source, a HEMS for managing power for each in-house electric apparatus establishes communication with the vehicle (S13), and alerts a user to the effect that the engine is soon operated according to the reception of an engine operation notice signal from the vehicle (S14). Further, in response to the reception of the engine operation notice signal from the vehicle, the HEMS operates a ventilation fan etc. in the garage in which the vehicle parks to automatically ventilate the garage (S15) and also alerts the user to the effect that the engine has been operated (S16).

Description

  The present invention relates to an energy management apparatus for managing electric power in a house.

  In recent years, a technique for using a vehicle such as an electric vehicle or a hybrid vehicle as a power supply source in a house has been developed.

  Japanese Patent Laying-Open No. 2005-224013 (Patent Document 1) discloses a battery that has a battery, an engine, and a generator that generates power using the power of the engine and can supply power to the outside. A configuration is shown in which the engine is automatically started and the battery is charged with the output of the generator when the charged amount falls below a predetermined amount.

JP-A-2005-224013

  As described above, in the vehicle disclosed in Patent Document 1, the engine is automatically started when the stored amount of the battery drops below a predetermined amount during external power feeding. However, when the vehicle is used as a power supply source in the house, it is assumed that the vehicle is parked in a garage whose surroundings are covered with a wall or the like. In such a case, if the engine is operated for a long time, the garage may be filled with the exhaust gas of the engine.

  The present invention has been made to solve the above-described problems, and its purpose is to fill a garage with exhaust gas from an engine when a vehicle parked in the garage is used as a power supply source in a house. Is to suppress it.

  The energy management device according to the present invention manages the power of a house. This energy management device is parked in a garage that is parked in a garage provided inside or around the house, and that communicates with a vehicle that can supply power generated by the engine power to the outside of the vehicle. A control device that performs at least one of ventilation control for ventilating the garage and ventilation promotion control for urging the user to ventilate the garage based on the state of the vehicle acquired via the communication device when receiving electric power from the vehicle With.

  Preferably, the vehicle includes a power storage device. When receiving power from a vehicle parked in the garage, the control device operates the engine from the state in which the state of the vehicle stops the engine and the power stored in the power storage device is supplied to the outside of the vehicle. At least one of ventilation control and ventilation promotion control is performed in response to switching to a state in which the generated power is supplied to the outside of the vehicle.

  Preferably, the garage is provided with at least one of a ventilation fan and a shutter. The ventilation control includes at least one of a control for operating the ventilation fan and a control for opening the shutter when the engine is operating.

  Preferably, the ventilation promotion control is a control that warns the user to ventilate the garage.

  Preferably, the ventilation promotion control is control for notifying the user of at least one of an engine operating condition and a garage ventilation condition.

  Preferably, when receiving power from a vehicle parked in the garage, the control device performs control to inquire the user whether to continue receiving power from the vehicle when the engine is operating. When there is no answer from the user or when there is a reply to stop receiving power from the vehicle, a command for stopping the engine is output to the vehicle.

Preferably, the energy management device is configured to be operable with electric power from the vehicle.
Preferably, the energy management device is configured to be capable of digital communication with the vehicle.

  ADVANTAGE OF THE INVENTION According to this invention, when using the vehicle parked in the garage as a power supply source inside a house, it can suppress that the exhaust gas of an engine fills in a garage.

1 is an overall block diagram of a power supply system. It is a flowchart (the 1) which shows the process sequence which HEMS and a vehicle perform. It is a flowchart (the 2) which shows the process sequence which HEMS and a vehicle perform.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.
[Embodiment 1]
FIG. 1 is an overall block diagram of a power supply system according to the present embodiment.

  This power supply system is a system for supplying power to each electrical device in the house 1. A garage 2 for vehicle parking is provided in the house 1. In addition, the garage 2 is not necessarily limited to being provided in the house 1, and may be provided in the vicinity of the house 1.

  The garage 2 is provided with a power receiving stand 3, a ventilation fan 4 for exchanging the air in the garage 2 and the outdoor air, and an electric shutter 5 for blocking the garage 2 from the outdoor.

  This power supply system includes a home energy management system (Home Energy Management System, hereinafter referred to as “HEMS”) 10, a system power supply 20 used as a regular power supply in the house 1, and a vehicle used as an emergency power supply in the house 1. 30.

  The HEMS 10 manages the power supplied to each electrical device in the house 1, monitors the state of each electrical device, and controls each electrical device. The HEMS 10 includes a control device 11, an operation terminal 12, a communication device 15, a switching device 16, and a power source 17.

  The operation terminal 12 includes a display device 13 for displaying various information to the user, and an input device 14 for the user to input various requests.

  The communication device 15 performs digital communication (for example, in-band communication) between the control device 11 and the vehicle 30 connected to the power receiving station 3. The communication device 15 transmits a control signal from the control device 11 to the vehicle 30 and transmits information from the vehicle 30 to the control device 11.

  Based on the user's request acquired from the input device 14 or information indicating the state of the vehicle 30 acquired from the vehicle 30 via the communication device 15, the control device 11 is connected to each electrical device in the house 1 (for example, the display device 13, The ventilation fan 4 and the electric shutter 5 are controlled. The control device 11 can also indirectly control each device in the vehicle 30 by outputting a command to the vehicle 30 via the communication device 15.

  The power source 17 is provided between the switching device 16 and each electric device in the house 1, and supplies electric power input from the switching device 16 to each electric device in the house 1.

  The switching device 16 is a device for switching the power supply source in the house 1 to either the system power supply 20 or the vehicle 30. In the present embodiment, the switching device 16 has a state in which the power source 17 and the system power source 20 are connected (hereinafter referred to as “normal state”) and a state in which the power source 17 and the power receiving stand 3 are connected (hereinafter referred to as “manual operation”). "Emergency state").

  When the switching device 16 is in a normal state, power from the system power supply 20 is supplied to each electrical device in the house 1. In normal times when power supply from the system power supply 20 is normally performed, it is assumed that power is supplied through such a path.

  On the other hand, when the switching device 16 is in an emergency state and the connector 22 extending from the power receiving stand 3 is connected to the vehicle 30, the electric power from the vehicle 30 is supplied to each electrical device in the house 1 including the HEMS 10. . In an emergency (so-called power outage) when power supply from the system power supply 20 is not normally performed due to a disaster or the like, each electric device in the house 1 including the HEMS 10 may be operated with the power supplied from the vehicle 30. it can. FIG. 1 illustrates an emergency power supply path.

  The vehicle 30 includes an engine 31, an MG (Motor Generator) 32, a PCU (Power Control Unit) 33, a battery 34, and an ECU (Electronic Control Unit) 37.

  MG32 is an AC rotating electrical machine. The MG 32 generates a vehicle driving force with the electric power stored in the battery 34. The MG 32 can also generate power using the power of the engine 31. The vehicle 30 may be configured so that the power of the engine 31 can be used not only for power generation but also as a vehicle driving force.

  The battery 34 is a rechargeable DC power storage device, and includes, for example, nickel hydride, lithium ions, or the like.

  The PCU 33 converts the direct current supplied from the battery 34 into alternating current based on a control signal from the ECU 37 and outputs the alternating current to the MG 32, or converts the alternating current generated by the MG 32 into direct current and outputs the direct current to the battery 34. .

  Further, the vehicle 30 includes a power feeder 35 and a power feeding port 36 for performing power feeding to the outside of the vehicle (hereinafter referred to as “external power feeding”).

  The power feeder 35 is provided between a power line connecting the PCU 33 and the battery 34 and the power feeding port 36. Based on a control signal from the ECU 37, the power feeder 35 converts the electric power stored in the battery 34 or the electric power generated by the MG 32 using the power of the engine 31 into electric power that can be used outside the vehicle (for example, AC 100 volts). The data is converted and output to the power feeding port 36.

  The power supply port 36 is a power interface for performing external power supply. When the user connects the connector 22 extending from the power receiving stand 3 to the power supply port 36, the vehicle 30 can supply power to the house 1. Note that power may be exchanged between the vehicle 30 and the power receiving station 3 in both directions.

  The ECU 37 monitors and controls the state of each device of the vehicle 30. The ECU 37 monitors the amount of power stored in the battery 34 (hereinafter referred to as “SOC” (State Of Charge)) during external power feeding. If the SOC is higher than the predetermined value α0, the engine 31 is stopped and stored in the battery 34. "Engine stop power supply" is performed to supply the external power to the outside. On the other hand, the ECU 37 operates the engine 31 and supplies the electric power generated by the MG 32 to the outside using the power of the engine 31 when the SOC becomes lower than the predetermined value α0 during the engine stop power supply. To do. When engine operation power supply is performed, the electric power generated by the MG 32 using the power of the engine 31 is supplied to the outside of the vehicle and also supplied to the battery 34 to charge the battery 34.

  Further, the ECU 37 transmits various information indicating the state of the vehicle 30 to the control device 11 via the communication device 15.

  In the power supply system having the above-described configuration, when the vehicle 30 parked in the garage 2 supplies power to the house 1 by engine stop power feeding, if the SOC decreases below the predetermined value α0, the engine 31 Is operated to supply power for engine operation. Therefore, in an emergency, the vehicle 30 can be used for a long time as an emergency power source in the house 1.

  At this time, it is desirable to ventilate the garage 2 in order to prevent the exhaust gas from the engine 31 from being filled in the garage 2. However, in an emergency, it is assumed that the user cannot properly grasp the driving situation of the vehicle 30 due to fatigue or the like, and the garage 2 is not ventilated.

  Therefore, the HEMS 10 according to the present embodiment receives power from the vehicle 30 parked in the garage 2 (when the vehicle 30 is used as an emergency power source in the house 1), via the communication device 15. Information indicating the state of the vehicle 30 (for example, information indicating the operating status of the engine 31, information indicating the SOC, etc.) and warning the garage to ventilate the garage 2 based on the acquired information. 2 ventilation is performed automatically. In the present embodiment, the information indicating the operation status of the engine 31 includes information indicating whether or not the engine 31 is in operation and the engine 31 is expected to be operated soon (after a predetermined period of time). Information indicating whether or not.

  FIG. 2 is a flowchart showing a processing procedure performed by the HEMS 10 and the vehicle 30. In FIG. 2, the left flowchart shows the processing procedure of the HEMS 10, and the right flowchart shows the processing procedure of the vehicle 30.

  First, the processing procedure of the HEMS 10 (the flowchart on the left side of FIG. 2) will be described. This flowchart is executed by the control device 11 when the control device 11 of the HEMS 10 is activated.

  In step (hereinafter, step is abbreviated as “S”) 10, control device 11 determines whether or not switching device 16 is in an emergency state (a state in which power supply 17 and power receiving stand 3 are connected). If switching device 16 is not in an emergency state (NO in S10), that is, if switching device 16 is in a normal state, control device 11 ends the process.

  When switching device 16 is in an emergency state (YES in S10), control device 11 recognizes that power is being received from vehicle 30 in S11, sets the control mode to the emergency mode in S12, and proceeds to S13. Communication with the vehicle 30 is established.

  In S <b> 14, control device 11 issues a warning to the user in response to receiving an engine operation advance notice signal described later from vehicle 30. For example, the control device 11 displays on the display device 13 that the engine 31 of the vehicle 30 parked in the garage 2 is about to be activated and prompts the user to ventilate the garage 2. Further, the control device 11 may display on the display device 13 the ventilation status of the garage 2, specifically, whether the ventilation fan 4 is operating and whether the electric shutter 5 is open. Good.

  In S15, control device 11 performs garage ventilation control in response to receiving an engine operation signal to be described later from vehicle 30. The garage ventilation control is a control in which the control device 11 automatically ventilates the garage 2. In this embodiment, the control for automatically operating the ventilation fan 4 and the control for automatically opening the electric shutter 5 are performed. Both are included. Only one of the controls may be performed.

  In S <b> 16, the control device 11 displays a warning on the display device 13 that the engine 31 of the vehicle 30 parked in the vehicle 30 has been operated, and warns the user.

  Next, the processing procedure of the vehicle 30 (the flowchart on the right side of FIG. 2) will be described. This flowchart is executed by the ECU 37 of the vehicle 30.

  In S <b> 20, the ECU 37 determines whether the connector 22 is connected to the power supply port 36. If connector 22 is not connected to power supply port 36 (NO in S20), ECU 37 ends the process.

  If connector 22 is connected to power supply port 36 (YES in S20), ECU 37 performs external power supply to HEMS 10 in S21. At this time, as described above, when the SOC is larger than the predetermined value α0, the engine stop power supply is performed, and when the SOC is smaller than the predetermined value α0, the engine operation power supply is performed.

In S22, the ECU 37 establishes communication with the HEMS 10.
In S23, ECU 37 determines whether or not the SOC is larger than predetermined value α0 and smaller than predetermined value α1 (α1> α0). This determination is a process for determining whether or not the SOC is predicted to operate when the SOC decreases below the predetermined value α0 after a predetermined time has elapsed. If the SOC is larger than predetermined value α0 and smaller than predetermined value α1 (YES in S23), the process proceeds to S24. If not (NO in S23), the process proceeds to S25.

  In S24, the ECU 37 outputs an engine operation notice signal to the HEMS 10 via the communication device 15. The engine operation notice signal is a signal indicating that the engine 31 is predicted to be operated after a predetermined time.

  In S25, ECU 37 determines whether or not the SOC is smaller than predetermined value α0. This process is a process for determining whether or not the engine 31 has actually been operated because the SOC has dropped below the predetermined value α0. If the SOC is smaller than predetermined value α0 (YES in S25), ECU 37 outputs an engine operation signal to HEMS 10 via communication device 15 in S26. The engine operation signal is a signal indicating that the engine 31 is actually operating.

  As described above, when the HEMS 10 according to the present embodiment receives power from the vehicle 30 parked in the garage 2, the HEMS 10 acquires information indicating the state of the vehicle 30 via the communication device 15. The ventilation fan 4 and the electric shutter 5 are operated based on the information to automatically ventilate the garage 2. Therefore, when the vehicle 30 is used as an emergency power source in the house 1, the garage 2 can be prevented from being filled with the exhaust gas of the engine 31.

  Further, when the vehicle 30 is used as an emergency power source in the house 1, the HEMS 10 according to the present embodiment does not operate the ventilation fan 4 and the electric shutter 5 when the engine 31 is not operating. Therefore, power consumption is reduced as compared with the case where the ventilation fan 4 and the electric shutter 5 are always operated.

In addition, the HEMS 10 according to the present embodiment displays the operation status of the engine 31 and the ventilation status of the garage 2 on the display device 13 to warn the user. Can be encouraged.
[Embodiment 2]
In the first embodiment, the HEMS 10 can automatically ventilate the garage 2 by operating the ventilation fan 4 or opening the electric shutter 5 by the HEMS 10.

  However, when equipment such as a ventilation fan or an electric shutter is not provided in the garage, the HEMS 10 cannot automatically ventilate the garage.

  Assuming such a case, when the HEMS 10 according to the second embodiment receives an engine operation signal from the vehicle 30, the HEMS 10 issues a warning to the user and asks the user whether or not to continue receiving power from the vehicle 30. Take control. And when there is no reply from a user or when there is a reply that the power reception from the vehicle 30 is stopped, the HEMS 10 outputs a command for stopping the engine operation power supply to the vehicle 30 via the communication device 15. .

  FIG. 3 is a flowchart showing a processing procedure performed by HEMS 10 and vehicle 30 according to the present embodiment. Note that the flowchart of FIG. 3 is obtained by deleting the process of S15 and adding the processes of S32 to S34, S40, and S41 to the flowchart of FIG. In FIG. 3, since steps having the same numbers as the steps shown in FIG. 2 have been described, detailed description thereof will not be repeated here.

First, the processing procedure of the HEMS 10 (the flowchart on the left side of FIG. 3) will be described.
The control device 11 of the HEMS 10 displays on the display device 13 that the engine 31 has been operated in S16, and then displays a message for inquiring the user whether or not to continue receiving power from the vehicle 30 in S31. It is displayed on the device 13.

  In S32, control device 11 determines whether or not there is an answer from the user. If there is an answer from the user (YES in S32), control device 11 moves the process to S33. If there is no answer from the user (NO in S32), control device 11 moves the process to S34.

  In S33, control device 11 determines whether or not the response from the user is a response to stop receiving power from vehicle 30. If the answer is not to stop receiving power from vehicle 30 (NO in S33), control device 11 ends the process as it is. If the answer is to stop receiving power from vehicle 30 (YES in S33), control device 11 moves the process to S34.

  In S <b> 34, control device 11 outputs a command for stopping engine operation power supply to vehicle 30 via communication device 15.

Next, the processing procedure of the vehicle 30 (the flowchart on the right side of FIG. 3) will be described.
In S40, ECU 37 of vehicle 30 determines whether or not a command for stopping engine operation power supply has been received from HEMS 10. When the command for stopping the engine operation power supply has not been received (NO in S40), ECU 37 ends the process.

  If a command for stopping engine operation power supply is received (YES in S40), ECU 37 stops engine 31 and stops engine operation power supply in S41.

  As described above, the HEMS 10 according to the present embodiment inquires of the user whether or not to continue receiving power from the vehicle 30 when the engine 31 is operated, and receives power from the vehicle 30 when there is no answer from the user. When there is an answer to stop the operation, the HEMS 10 outputs a command for stopping the engine operation power supply to the vehicle 30 via the communication device 15. And vehicle 30 by this embodiment will stop engine 31 and stop engine operation electric supply, if the command for stopping engine operation electric supply is received from HEMS10. Therefore, even if the HEMS 10 cannot perform the garage ventilation control because the garage is not provided with equipment such as a ventilation fan or an electric shutter, the garage is prevented from being filled with the exhaust gas of the engine 31. Can do.

  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.

  DESCRIPTION OF SYMBOLS 1 House, 2 Garage, 3 Power receiving stand, 4 Exhaust fan, 5 Electric shutter, 10 HEMS, 11 Control apparatus, 12 Operation terminal, 13 Display apparatus, 14 Input apparatus, 15 Communication apparatus, 16 Switching apparatus, 17 Power supply, 20 System power supply , 22 connector, 30 vehicle, 31 engine, 32 MG, 33 PCU, 34 battery, 35 power feeder, 36 power feeding port, 37 ECU.

Claims (8)

An energy management device for managing the power of a house,
A communication device that is parked in a garage provided in or around the house, and that communicates with a vehicle capable of supplying electric power generated by engine power to the outside of the vehicle;
When receiving electric power from the vehicle parked in the garage, the user is prompted to perform ventilation control for ventilating the garage based on the state of the vehicle acquired via the communication device and to ventilate the garage. An energy management device comprising: a control device that performs at least one of ventilation promotion control. The vehicle includes a power storage device,
When the control device receives power from the vehicle parked in the garage, the state of the vehicle stops the engine, and the power is stored in the power storage device to supply power to the outside of the vehicle. 2. The energy management device according to claim 1, wherein at least one of the ventilation control and the ventilation promotion control is performed in response to switching to a state in which the electric power generated by the engine power is supplied to outside the vehicle. . The garage is provided with at least one of a ventilation fan and a shutter,
The energy management apparatus according to claim 1, wherein the ventilation control includes at least one of a control for operating the ventilation fan and a control for opening the shutter when the engine is operating.   The energy management apparatus according to claim 1, wherein the ventilation promotion control is a control that warns a user to ventilate the garage.   The energy management apparatus according to claim 1, wherein the ventilation promotion control is control for notifying a user of at least one of an operation state of the engine and a ventilation state of the garage.   When the control device receives electric power from the vehicle parked in the garage, the control device inquires of the user whether to continue receiving electric power from the vehicle when the engine is operating. The command for stopping the engine is output to the vehicle when there is no response from the user or when there is a response to stop receiving power from the vehicle. Energy management device.   The energy management apparatus according to claim 1, wherein the energy management apparatus is configured to be operable with electric power from the vehicle.   The energy management apparatus according to claim 1, wherein the energy management apparatus is configured to be capable of digital communication with the vehicle.

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