JP7026608B2 - Garage ventilation system - Google Patents

Description

The present invention relates to a garage ventilation system that ventilates a garage.

In recent years, a system capable of supplying electric power to a house from a storage battery mounted on an electric vehicle or a plug-in hybrid vehicle has become widespread. When power is supplied from the storage battery of a plug-in hybrid vehicle to the inside of a house, the vehicle may generate electricity by operating the engine of the vehicle. By generating electricity in a state where the amount of electric power stored in the storage battery is low, it is possible to supplement the insufficient electric power by discharging the storage battery. In the case of power generation by a vehicle stored in a garage, the garage is ventilated in order to suppress the filling of exhaust gas discharged from the vehicle while the engine is running.

Patent Document 1 describes that in a power supply system that uses a vehicle stored in a garage as a power supply source in a house, ventilation of the garage is automatically performed when power is supplied to the house by operating the engine of the vehicle. It is disclosed what to do in. The power supply system according to Patent Document 1 is managed by a Home Energy Management System (HEMS). According to the technique of Patent Document 1, the HEMS operates the ventilation fan of the garage based on the information obtained by communicating with the vehicle.

Japanese Patent No. 5853931

In the power supply system according to Patent Document 1, the HEMS requires a communication device for obtaining vehicle information. Further, since the ventilation fan of the power supply system according to Patent Document 1 is controlled based on the information obtained by HEMS, it needs to be a ventilation fan that can be managed by HEMS. The power supply system according to Patent Document 1 requires a communication device and a ventilation fan that can be managed by HEMS, so that there is a problem that the burden of introducing the system is large.

The present invention has been made in view of the above, and an object of the present invention is to obtain a garage ventilation system capable of reducing the burden when introducing the system.

In order to solve the above-mentioned problems and achieve the object, the garage ventilation system according to the present invention includes a power supply facility that charges a storage battery mounted on a vehicle and supplies power from the storage battery to a load. It is provided in the garage where the vehicle is stored, and is equipped with an intake ventilation fan that operates by receiving electric power supply from the electric power supply facility and takes in the air outside the garage into the garage. The power supply equipment uses communication via a power cable that connects the power supply equipment and the vehicle with an intake switching unit that switches between starting power supply to the intake ventilation fan and stopping power supply to the intake ventilation fan. It has a control unit that acquires information about the power supply source of the vehicle and information indicating the state of the vehicle, and controls an intake switching unit based on the acquired information . When the control unit determines that the power supply from the storage battery to the load is performed by the discharge of the storage battery based on the information acquired from the vehicle, the control unit stops the power supply to the intake ventilation fan at the intake switching unit. Based on the information obtained from the vehicle, when it is determined that the fuel cell is mounted on the vehicle and the power supply from the storage battery to the load is performed by the power generation of the fuel cell, the intake switching part is connected to the intake ventilation fan. Start power supply.

According to the present invention, there is an effect that the burden when introducing the system can be reduced.

The figure which shows the house which has the garage ventilation system which concerns on Embodiment 1 of this invention. The figure which shows the garage ventilation system shown in FIG. 1 and the element connected to the garage ventilation system. A perspective view showing a part of the power cable of the garage ventilation system shown in FIG. Cross-sectional view of the power cable in the IV-IV line shown in FIG. The figure which shows the configuration when the intake ventilation fan is added to the garage ventilation system shown in FIG. A flowchart illustrating a control procedure by the control unit of the garage ventilation system shown in FIG. The figure which shows the hardware composition in the case where the function of the control part which the garage ventilation system shown in FIG. 1 is realized by using the dedicated hardware. The figure which shows the hardware configuration when the function of the control part which has the garage ventilation system shown in FIG. 1 is realized by using a processor.

Hereinafter, the garage ventilation system according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a diagram showing a house 1 having a garage ventilation system according to the first embodiment of the present invention. The house 1 is provided with a garage 2 for storing the vehicle 3. The storage battery 4 is mounted on the vehicle 3. The vehicle 3 is an electric vehicle or a plug-in hybrid vehicle. The garage ventilation system is provided in a power supply facility 6 that charges the storage battery 4 and supplies power from the storage battery 4 to a load, a power cable 9 that connects the power supply facility 6 and the vehicle 3, and a garage 2. It has a ventilation fan 12 and is installed. The ventilation fan 12 is an exhaust ventilation fan that operates by receiving electric power supply from the electric power supply facility 6 to exhaust the air in the garage 2.

The commercial power source 7 supplies electric power to the house 1. The power supply facility 6 supplies power from the commercial power source 7 to the load 5 in the house. The electricity meter 8 measures the amount of electric power supplied from the commercial power source 7 to the house 1.

The first end, which is one end of the power cable 9, is connected to the power supply facility 6. The connector 10 is provided at the second end, which is the other end of the power cable 9. The connector 10 is inserted into the charging port 11 when charging the storage battery 4. When the connector 10 is inserted into the charging port 11, the power cable 9 connects the vehicle 3 and the power supply facility 6. After the vehicle 3 and the power supply facility 6 are connected, the storage battery 4 is charged by the power supply from the power supply facility 6.

The power supply facility 6 can supply power from the storage battery 4 to the load 5 in the house in an emergency such as a power outage when the power supply from the commercial power source 7 cannot be received. Further, the electric power supply facility 6 controls the ventilation fan 12 by supplying electric power to the ventilation fan 12 according to the result of detecting the state of the vehicle 3.

FIG. 2 is a diagram showing the garage ventilation system shown in FIG. 1 and the elements connected to the garage ventilation system. The earth-leakage circuit breaker 13 for receiving power protects the power wiring of the house 1 and the load 5 in the house. The commercial power source 7 is connected to the AC connection port 14 of the power supply facility 6 via the electricity meter 8 and the earth-leakage circuit breaker 13 for receiving power.

The residential distribution board 17 has a main breaker 18 and a plurality of branch breakers 19. An outlet 20 provided in the house 1 is connected to each branch breaker 19. The load 5 in the house is connected to the outlet 20. In FIG. 2, the illustration of the load 5 in the house is omitted. The main breaker 18 is connected to the load connection port 16 of the power supply facility 6.

The power supply facility 6 has an electromagnetic contactor 15 capable of cutting off the supply of AC power from the commercial power source 7 to the power supply facility 6. The first end, which is one end of the magnetic contactor 15, is connected to the AC connection port 14. The second end, which is the other end of the magnetic contactor 15, is connected to the load connection port 16. When the magnetic contactor 15 is in the closed state, the power supply equipment 6 is supplied with AC power from the commercial power source 7. By changing the electromagnetic contactor 15 from the closed state to the open state, the supply of AC power from the commercial power source 7 to the power supply facility 6 is cut off. When the power receiving leakage breaker 13, the electromagnetic contactor 15, the main breaker 18, and the branch breaker 19 are all closed, AC power from the commercial power source 7 is supplied to the load 5 in the house.

The power supply facility 6 has a power conversion device 21 that converts AC power from the commercial power source 7 into DC power and converts DC power from the storage battery 4 into AC power. In FIG. 2, the power conversion device 21 is referred to as “AC / DC”. The DC side terminal of the power conversion device 21 is connected to the DC connection port 22 of the power supply facility 6. The AC side terminal of the power conversion device 21 is connected to a connection point P1 between the second end of the magnetic contactor 15 and the load connection port 16.

The power supply facility 6 has an exhaust contactor 23 which is an exhaust switching unit for switching between supplying AC power to the ventilation fan 12 and stopping supply of AC power to the ventilation fan 12. The first end, which is one end of the exhaust contactor 23, is connected to the connection point P2 between the second end of the electromagnetic contactor 15 and the load connection port 16. The second end, which is the other end of the exhaust contactor 23, is connected to the ventilation fan connection port 24 of the power supply equipment 6. The ventilation fan 12 is connected to the ventilation fan connection port 24.

The power supply facility 6 has a control unit 27 that controls switching between the electromagnetic contactor 15 and the exhaust contactor 23. The vehicle 3 has an in-vehicle contactor 25 connected between the charging port 11 and the storage battery 4, and a control unit 26 that controls switching between the in-vehicle contactor 25.

The magnetic contactor 15 is closed in normal times when the commercial power source 7 can be normally used. When the electromagnetic contactor 15 is closed, the power supply facility 6 supplies AC power to the load 5 in the house via the distribution board 17 for the house. When the electromagnetic contactor 15 is in the closed state, the connector 10 is inserted into the charging port 11 and the contactor 25 in the vehicle is closed, so that the power supply facility 6 is generated by the conversion in the power conversion device 21. The DC power is output to the vehicle 3. As a result, the storage battery 4 is charged.

The control unit 26 closes the contactor 25 in the vehicle by obtaining confirmation information described later. The storage battery 4 is charged by closing the contactor 25 in the vehicle. If the confirmation information cannot be obtained, the control unit 26 opens the contactor 25 in the vehicle. When the electromagnetic contactor 15 is in the open state, the state in which the supply of DC power to the storage battery 4 is cut off is maintained, and the storage battery 4 is not charged.

When an abnormality such as a power failure that cannot receive the power supply from the commercial power source 7 occurs, the control unit 27 commands the magnetic contactor 15 to switch from the closed state to the open state. The magnetic contactor 15 switches from the closed state to the open state according to a command. The power supply facility 6 cuts off the electric circuit of the commercial power source 7 by opening the electromagnetic contactor 15. The power supply facility 6 prevents an overcurrent at the time of power recovery by cutting off the electric circuit of the commercial power source 7 in an emergency.

When power is supplied from the storage battery 4 to the load 5 in the house, the connector 10 is inserted into the charging port 11 and the contactor 25 in the vehicle is closed. In such a state, the vehicle 3 outputs DC power to the power supply facility 6 by discharging the storage battery 4. The power conversion device 21 converts the DC power input to the DC connection port 22 into AC power. As a result, the power supply facility 6 supplies AC power to the load 5 in the house via the distribution board 17 for the house.

The power conversion device 21 converts the AC power supplied by the commercial power source 7 into DC power when the storage battery 4 is charged, and converts the DC power supplied by the storage battery 4 into AC power when the storage battery 4 is discharged. .. As described above, the power conversion device 21 is responsible for both the conversion from AC power to DC power and the conversion from DC power to AC power.

In the power supply from the storage battery 4 to the load 5 in the house, power generation may be performed in the vehicle 3 by operating the engine of the vehicle 3. By generating power in a state where the amount of electric power stored in the storage battery 4 is low, it is possible to supplement the electric power insufficient by discharging the storage battery 4.

The control unit 27 detects the state of the vehicle 3 stored in the garage 2 when the power is supplied from the storage battery 4 to the load 5 in the house, and the exhaust contactor is based on the detection result of the state of the vehicle 3. 23 is controlled. The control unit 27 acquires information from the vehicle 3 by communication via the power cable 9, and detects the state of the vehicle 3 based on the acquired information.

When power is supplied from the storage battery 4 to the power supply facility 6 without running the engine, the control unit 27 detects that the vehicle 3 is not running the engine based on the information from the vehicle 3. do. In this case, the exhaust contactor 23 is opened. Since the power supply from the storage battery 4 to the ventilation fan 12 is cut off by the exhaust contactor 23 being in the open state, the operation of the ventilation fan 12 is stopped.

After that, when the operation of the engine is started, the control unit 27 detects that the vehicle 3 is in the operating state based on the information from the vehicle 3. The control unit 27 commands the exhaust contactor 23 to switch from the open state to the closed state based on the detection result that the vehicle 3 is in the operating state of the engine. The exhaust contactor 23 switches from the open state to the closed state according to the command. By switching the exhaust contactor 23 from the open state to the closed state, electric power is supplied from the storage battery 4 to the ventilation fan 12 via the electric power supply facility 6. The ventilation fan 12 starts operation by receiving electric power supply. The ventilation fan 12 exhausts the air in the garage 2 when the vehicle 3 is in a state where the engine is running. As a result, the garage ventilation system suppresses the filling of the exhaust gas discharged from the vehicle 3 while the engine is running.

FIG. 3 is a perspective view showing a part of the power cable 9 included in the garage ventilation system shown in FIG. FIG. 4 is a cross-sectional view of the power cable 9 in the IV-IV line shown in FIG. FIG. 3 shows a portion of the power cable 9 including the connector 10. The power cable 9 includes a communication line 28 for communication between the power supply equipment 6 and the vehicle 3, a power line 29 for power supply between the power supply equipment 6 and the vehicle 3, and various controls. The control line 30 which is the transmission path of the signal of the above is housed.

The power supply facility 6 is a facility that complies with the V2H (Vehicle to Home) guideline. The V2H guideline shall refer to the "Charge / Discharge System Guideline for Electric Vehicles V2H DC Version" established by the Electric Power Supply System Council for Electric Vehicles. The V2H guideline is a guideline for ensuring electrical safety and connection compatibility when power is supplied to indoor wiring by utilizing the charging capacity and power generation capacity of the vehicle. The connection between the power supply facility 6 and the charging port 11, the charging of the storage battery 4, and the power supply from the storage battery 4 to the load 5 in the house shall be in accordance with the rules regarding control in the V2H guideline.

The control unit 27 confirms that the insulation deterioration has not occurred between the power cable 9 and the connector 10 before the positive electrode terminal and the negative electrode terminal, which are the main electrodes of the storage battery 4, are connected to the DC side terminal of the power supply facility 6. Do an inspection for. When it is confirmed that the insulation deterioration has not occurred, the control unit 27 transmits the confirmation information, which is the information indicating that the insulation deterioration has not occurred, to the vehicle 3 via the communication line 28. By receiving the confirmation information, the control unit 26 commands the contactor 25 in the vehicle to switch from the open state to the closed state. The power supply facility 6 charges the storage battery 4 when the power cable 9 and the connector 10 are not deteriorated in insulation. The power supply facility 6 does not charge the storage battery 4 when the insulation of the power cable 9 and the connector 10 is deteriorated. As a result, the power supply facility 6 can suppress charging and discharging in a state where the power cable 9 or the connector 10 has insulation deterioration.

The control unit 26 and the control unit 27 charge and discharge the amount of power stored in the storage battery 4 when the storage battery 4 is being charged and when the storage battery 4 is being discharged. Constantly monitor charging and discharging conditions such as voltage and current. When an abnormality is confirmed in charging or discharging, the control unit 26 commands the contactor 25 in the vehicle to switch from the closed state to the open state. When an abnormality is confirmed in charging or discharging, the control unit 27 commands the DC contactor between the power conversion device 21 and the DC connection port 22 to switch from the closed state to the open state. In FIG. 2, the DC contactor is not shown.

The specifications of the power cable 9 and the specifications of the connector 10 are the specifications in accordance with the V2H guideline. For communication between the vehicle 3 and the power supply facility 6, CAN (Controller Area Network), which is a serial communication protocol with enhanced noise immunity, is used.

The power supply from the storage battery 4 to the load 5 in the house may be possible not only in an emergency but also in normal times. The power supply facility 6 may be a power conditioner capable of supplying power in the form of grid interconnection. The power supply from the storage battery 4 to the load 5 in the house in the form of grid interconnection is stipulated in the "grid interconnection regulations" JEAC9701-2016 issued by the Japan Electric Association. According to the provisions of the "grid interconnection regulations", the power supply in the form of grid interconnection by the storage battery 4 is such that the DC side terminal of the power supply facility 6 and the main electrode of the storage battery 4 are connected via a converter in the vehicle 3. Only when the DC power is directly connected without being converted into AC power by the power conversion device 21. That is, it is limited to the case where the power supply facility 6 and the vehicle 3 are connected by the power cable 9. Further, in the case of a hybrid vehicle, power supply in the form of grid interconnection is limited to the case where the engine is stopped.

"System interconnection protection device for storage batteries (DC connection type) installed in electric vehicles, etc." established by the Japan Electrical Safety and Environment Technology Laboratories (JET), which is a certification body for power conditioners. In the "individual test", a test is conducted to determine whether or not grid interconnection is possible using a power conditioner. By such a test, it was confirmed that it is possible to judge that the power supply in the form of grid interconnection is prohibited when the conditions stipulated in the "grid interconnection regulations" are not satisfied. There is.

The power supply facility 6 can determine whether or not power can be supplied in the form of grid interconnection by the storage battery 4 based on the information sent from the vehicle 3. By obtaining the information from the vehicle 3, the power supply facility 6 can suppress the power supply in the form of grid interconnection under the condition that the power supply in the form of grid interconnection is prohibited. In addition, the power supply facility 6 conforming to the V2H guideline has information on whether or not power can be supplied in the form of grid interconnection, as well as on the secondary battery, internal combustion engine, or fuel cell that is the power supply source. Information can be obtained.

Next, the control of the ventilation fan 12 in the garage ventilation system according to the first embodiment will be described. When the engine is operating, the power supply facility 6 cannot supply power by grid interconnection operation. When the information indicating that the engine operation is stopped is obtained from the vehicle 3, the control unit 27 determines that power can be supplied by grid interconnection operation based on the information obtained from the vehicle 3. .. The control unit 27 opens the exhaust contactor 23 based on such a determination. When the control unit 27 determines that the power supply can be supplied by the grid interconnection operation, the ventilation fan 12 is in the stopped state because the power supply is in the state where the engine is stopped and the exhaust gas is not discharged by the vehicle 3. Will be done. As a result, the garage ventilation system can stop the ventilation fan 12 when there is no exhaust gas and the operation of the ventilation fan 12 is unnecessary.

Further, when the vehicle 3 housed in the garage 2 is an electric vehicle, only the storage battery 4 which is a secondary battery is the power supply source, and the engine which is an internal combustion engine is not mounted on the electric vehicle. When the information indicating that the vehicle 3 is an electric vehicle is obtained from the vehicle 3, the control unit 27 determines that power can be supplied in the grid interconnection operation based on the information obtained from the vehicle 3. .. The control unit 27 opens the exhaust contactor 23 based on such a determination. Even when the control unit 27 determines that the vehicle 3 is an electric vehicle and can be powered by grid interconnection operation, the ventilation fan 12 is stopped because the vehicle 3 does not emit exhaust gas. As a result, the garage ventilation system can stop the ventilation fan 12 when there is no exhaust gas and the operation of the ventilation fan 12 is unnecessary.

According to the above-mentioned "grid interconnection regulations", when the power supply facility 6 is in an autonomous operation state cut off from the commercial power source 7, that is, when the electromagnetic contactor 15 is in an open state, the power supply source of the vehicle 3 is used. Power supply by power generation is permitted. Therefore, in the self-sustaining operation state, the electric power supply facility 6 can generate electric power by operating the engine and supply electric power by the obtained electric power.

When power is supplied from the storage battery 4 to the load 5 in the house in an emergency when the power supply from the commercial power source 7 cannot be received, the vehicle 3 can generate power by operating the engine. When the information indicating that the engine, which is an internal combustion engine, is the power supply source and the engine is operating is obtained from the vehicle 3, the control unit 27 exhausts the gas based on the information obtained from the vehicle 3. The contactor 23 is closed. In the vehicle ventilation system, the control unit 27 determines that the power is supplied by the operation of the engine, so that the ventilation fan 12 is operated in the situation where the exhaust gas is discharged by the vehicle 3 to discharge the air in the garage 2. As a result, the garage ventilation system can suppress the filling of the exhaust gas in the garage 2.

The garage ventilation system may have an intake ventilation fan that takes in air from the outside of the garage 2 into the garage 2. FIG. 5 is a diagram showing a configuration when an intake ventilation fan is added to the garage ventilation system shown in FIG. 1. The ventilation fan 31 is an intake ventilation fan that operates by receiving electric power supply from the electric power supply facility 6 and sucks the air outside the garage 2 into the garage 2. The ventilation fan 31 is provided in the garage 2.

The power supply facility 6 shown in FIG. 5 has an intake contactor 33 which is an intake switching unit for switching between supplying AC power to the ventilation fan 31 and stopping supply of AC power to the ventilation fan 31. The first end, which is one end of the intake contactor 33, is connected to the connection point P3 between the second end of the electromagnetic contactor 15 and the load connection port 16. The second end, which is the other end of the intake contactor 33, is connected to the ventilation fan connection port 32 of the power supply facility 6. The ventilation fan 31 is connected to the ventilation fan connection port 32. The control unit 27 controls switching between the electromagnetic contactor 15, the exhaust contactor 23, and the intake contactor 33.

A fuel cell vehicle generates electricity by a chemical reaction between hydrogen and oxygen in a fuel cell, and drives a motor by the electric energy obtained by the power generation. Here, it is assumed that the vehicle 3 housed in the garage 2 is a fuel cell vehicle. According to the above-mentioned "grid interconnection regulation", power supply in the form of grid interconnection by the storage battery 4 of the fuel cell vehicle is prohibited. However, in the self-sustaining operation state in which the power supply facility 6 is cut off from the commercial power source 7, the power supply facility 6 can supply power in the form of grid interconnection by the storage battery 4.

When the vehicle 3 which is a fuel cell vehicle supplies electric power from the storage battery 4 to the load 5 in the house, the fuel cell can generate electric power. Since oxygen contained in the air inside the garage 2 is used for power generation, when the flow of air from the outside of the garage 2 to the inside of the garage 2 is insufficient at the time of power generation, the inside of the garage 2 is used. Oxygen concentration may decrease.

When the information indicating that the fuel cell is the power supply source and the fuel cell is generating power is obtained from the vehicle 3, the control unit 27 takes in air based on the information obtained from the vehicle 3. The contactor 33 is closed. When the control unit 27 determines that the vehicle ventilation system is powered by the power generated by the fuel cell, the ventilation fan 31 is operated in a situation where oxygen is consumed by the vehicle 3, and the air outside the garage 2 is taken into the garage 2. Import to. As a result, the garage ventilation system can suppress a decrease in oxygen concentration in the garage 2.

FIG. 6 is a flowchart illustrating a control procedure by the control unit 27 included in the garage ventilation system shown in FIG. FIG. 6 shows a procedure for controlling the control unit 27 when power is supplied by power generation from the power supply source of the vehicle 3. Further, at the start of the control shown in FIG. 6, it is assumed that both the exhaust contactor 23 and the intake contactor 33 are in the open state. Since the exhaust contactor 23 is in the open state, the ventilation fan 12 is in the stopped state. Since the intake contactor 33 is in the open state, the ventilation fan 31 is in the stopped state.

When power is supplied by power generation from the power supply source of the vehicle 3, the vehicle 3 transmits information indicating the state of the vehicle 3 and information about the power supply source to the control unit 27 by communication via the communication line 28. Send. In step S1, the control unit 27 determines whether or not the power supply is the power supply by the grid interconnection operation based on the information obtained from the vehicle 3.

In the case of power supply by grid interconnection operation, the control unit 27 can determine that the power supply is not the power supply by the operation of the engine or the power generation by the fuel cell, but the power supply by only the discharge of the storage battery 4 which is the secondary battery. .. When the control unit 27 determines that the power is supplied by the grid interconnection operation (steps S1 and Yes), the control unit 27 does not give a command for switching both the exhaust contactor 23 and the intake contactor 33. As a result, the vehicle ventilation system keeps both the ventilation fan 12 and the ventilation fan 31 in a stopped state in the power supply without exhaust gas emission and oxygen consumption. As a result, the control unit 27 ends the control according to the procedure shown in FIG.

When the power supply is not the power supply by the grid interconnection operation, the control unit 27 can determine that the power supply is the power supply by the self-sustaining operation and is either the power supply by the operation of the engine or the power supply by the power generation of the fuel cell. When the control unit 27 determines that the power supply is not due to the grid interconnection operation (steps S1 and No), the control unit 27 determines in step S2 whether or not the power supply source of the vehicle 3 is a fuel cell.

When the power supply source of the vehicle 3 is a fuel cell, the control unit 27 can determine that such power supply is power generation by power generation of the fuel cell. When the control unit 27 determines that the power supply source of the vehicle 3 is a fuel cell (steps S2, Yes), the control unit 27 is for switching the intake contactor 33 among the exhaust contactor 23 and the intake contactor 33. Give a command. By switching the intake contactor 33 from the open state to the closed state, the vehicle ventilation system operates the ventilation fan 31, which is the intake ventilation fan, in step S3. Thereby, the vehicle ventilation system operates the ventilation fan 31 in the feeding with the consumption of oxygen. After step S3, the control unit 27 ends the control according to the procedure shown in FIG.

When it is determined that the power supply source of the vehicle 3 is not a fuel cell (steps S2 and No), the control unit 27 determines in step S4 whether or not the power supply source of the vehicle 3 is an internal combustion engine. When the electric power supply source of the vehicle 3 is an internal combustion engine, the control unit 27 can determine that the electric power is supplied by operating the internal combustion engine to generate electric power. When the control unit 27 determines that the power supply source of the vehicle 3 is an internal combustion engine (steps S4, Yes), the control unit 27 for switching the exhaust contactor 23 among the exhaust contactor 23 and the intake contactor 33. Give a command. By switching the exhaust contactor 23 from the open state to the closed state, the vehicle ventilation system operates the ventilation fan 12, which is the exhaust ventilation fan, in step S5. As a result, the vehicle ventilation system operates the ventilation fan 12 in the power supply accompanied by the exhaust of the exhaust gas. After step S5, the control unit 27 ends the control according to the procedure shown in FIG. Even when it is determined that the power supply source of the vehicle 3 is not an internal combustion engine (steps S4 and No), the control unit 27 ends the control according to the procedure shown in FIG.

As described above, the garage ventilation system is a system capable of supplying electric power from the storage battery 4 to the load 5 in the house, and includes an electric power supply facility 6 conforming to the V2H guideline. The power supply equipment 6 obtains information about the state of the vehicle 3 and information about the power supply source from the vehicle 3 by the control unit 27, and controls the ventilation fan 12 and the ventilation fan 31 based on the obtained information. Therefore, the garage ventilation system does not need to separately provide a control device for power management of the house 1 and a communication device for obtaining information of the vehicle 3. Further, the ventilation fans 12 and 31 of the garage ventilation system do not have to be ventilation fans corresponding to a specific management system such as HEMS, and can be general ventilation fans.

The function of the control unit 27 of the power supply facility 6 is realized by using a processing circuit. The processing circuit is dedicated hardware mounted on the power supply facility 6. The processing circuit may be a processor that executes a program stored in the memory.

FIG. 7 is a diagram showing a hardware configuration when the function of the control unit 27 of the garage ventilation system shown in FIG. 1 is realized by using dedicated hardware. The processing circuit 41, which is dedicated hardware, is a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or any of these. It is a combination.

FIG. 8 is a diagram showing a hardware configuration when the function of the control unit 27 of the garage ventilation system shown in FIG. 1 is realized by using the processor 42. The processor 42 and the memory 43 are connected to each other so as to be able to communicate with each other. The processor 42 executes a program stored in the memory 43.

The processor 42 is a CPU (Central Processing Unit), a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor). The function of the control unit 27 is realized by the processor 42 and software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 43. The memory 43 is non-volatile or volatile such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EEPROM (Erasable Programmable Read Only Memory), EEPROM (registered trademark) (Electrically Erasable Programmable Read Only Memory). Built-in memory such as semiconductor memory.

A part of the function of the control unit 27 may be realized by dedicated hardware, and the other part of the function of the control unit 27 may be realized by software or firmware. As described above, the function of the control unit 27 can be realized by hardware, software, firmware, or a combination thereof.

The function of the control unit 26 possessed by the vehicle 3 is realized by the processing circuit in the same manner as the function of the control unit 27. The hardware configuration shown in FIG. 7 and the hardware configuration shown in FIG. 8 may be applied to the control unit 26.

According to the first embodiment, the garage ventilation system detects the state of the vehicle 3 housed in the garage 2 by communication via the power cable 9, and exhausts the vehicle 3 based on the detection result of the state of the vehicle 3. The contactor 23 and the intake contactor 33 are controlled. The garage ventilation system does not need to separately provide a communication device for obtaining information on the vehicle 3, and the ventilation fans 12 and 31 do not need to use a ventilation fan corresponding to a specific management system. This has the effect that the garage ventilation system can reduce the burden when introducing the system.

The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations as long as it does not deviate from the gist of the present invention. It is also possible to omit or change the part.

1 house, 2 garage, 3 vehicle, 4 storage battery, 5 house load, 6 power supply equipment, 7 commercial power supply, 8 electricity meter, 9 power cable, 10 connector, 11 charging port, 12, 31 ventilation fan, 13 for power receiving Earth-leakage circuit breaker, 14 AC connection port, 15 electromagnetic contact, 16 load connection port, 17 residential distribution board, 18 main breaker, 19 branch breaker, 20 outlet, 21 power converter, 22 DC connection port, 23 for exhaust Contactor, 24, 32 Ventilation fan connection port, 25 In-vehicle contactor, 26, 27 control unit, 28 communication line, 29 power line, 30 control line, 33 intake contactor, 41 processing circuit, 42 processor, 43 memory.

Claims (1)

A power supply facility that charges the storage battery mounted on the vehicle and supplies power from the storage battery to the load.
An intake ventilation fan provided in the garage in which the vehicle is placed and operating by receiving power supplied from the power supply facility to take in air outside the garage into the garage.
Equipped with
The power supply equipment is
An intake switching unit that switches between starting power supply to the intake ventilation fan and stopping power supply to the intake ventilation fan.
Information about the power supply source of the vehicle and information indicating the state of the vehicle are acquired by communication via a power cable connecting the power supply facility and the vehicle, and the intake air is based on the acquired information . A control unit that controls the switching unit and
Have,
The control unit
When it is determined that the power supply from the storage battery to the load is performed by the discharge of the storage battery based on the information acquired from the vehicle, the power supply to the intake ventilation fan is stopped by the intake switching unit. Let me
Based on the information acquired from the vehicle, when it is determined that the fuel cell is mounted on the vehicle and the power supply from the storage battery to the load is performed by the power generation of the fuel cell, the intake switching unit is used. A garage ventilation system characterized in that power supply to the intake ventilation fan is started .

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