JP2021065807A - Control system of vehicle mounted with co2 recovery device - Google Patents

Abstract

To provide a control system capable of reducing carbon dioxide emissions into the atmosphere by using a vehicle mounted with a CO2 recovery device.SOLUTION: In a control system of a vehicle mounted with a CO2 recovery device recovering carbon dioxide from circulated gas, a controller is adapted to: determine whether the vehicle is connected to a building 7 positioned outside the vehicle; and enable carbon dioxide in air in the building to be recovered when determining that the vehicle is connected to the building 7 (Steps S1 to S5).SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle control system equipped with a device for recovering CO ₂ emitted from an internal combustion engine _{or CO 2 in the atmosphere.}

A vehicle equipped with a CO ₂ recovery device is described in Patent Document 1. _{The CO 2} recovery device described in Patent Document 1 supplies exhaust gas (exhaust flow) discharged from an engine to a CO ₂ trapping agent, and extracts carbon dioxide in the exhaust gas from the exhaust gas by the trapping agent. It is configured to reduce the carbon dioxide in it. Exhaust after contact with the scavenger is released into the atmosphere. Further, in the apparatus described in Patent Document 1, carbon dioxide is desorbed from the scavenger by heating the scavenger with the exhaust heat from the engine, and the desorbed carbon dioxide is compressed and liquefied. In that state, it is temporarily stored in the vehicle.

Special Table 2014-509360

Vehicles equipped with a CO ₂ recovery device can suppress the increase of carbon dioxide in the atmosphere, and therefore contribute to the control or avoidance of global warming to a large extent. Therefore, it is desired to actively use a vehicle equipped with a _{CO 2 recovery device.} In the configuration of Patent Document 1 described above, it is possible to suppress an increase in carbon dioxide emitted into the atmosphere by recovering carbon dioxide in the exhaust gas during traveling. On the other hand, the above-mentioned CO ₂ recovery device can recover carbon dioxide contained in the atmosphere as well as carbon dioxide in the exhaust gas, but in the configuration described in Patent Document 1, carbon dioxide in running is used. The _{opportunity to use the CO 2} recovery device is limited. Therefore, there is room for developing a new technology in that the amount of carbon dioxide can be suppressed by using a vehicle equipped with a _{CO 2 recovery device.}

The present invention has been made in the context of the above circumstances, and provides a control system capable of reducing carbon dioxide emissions into the atmosphere by using a vehicle equipped with a _{CO 2 recovery device.} It is the purpose.

In order to achieve the above object, the present invention includes a controller for controlling the vehicle in a vehicle control system equipped with a _{CO 2 recovery device that recovers carbon dioxide from a circulating gas, and the controller is the vehicle.} And whether or not the building provided outside the vehicle is connected, and when it is determined that the vehicle and the building are connected, carbon dioxide contained in the air inside the building is recovered. It is characterized in that it is configured as such.

Further, in the present invention, when the controller recovers the carbon dioxide, it determines whether or not the carbon dioxide can be recovered by the electric power supplied from the building, and the electric power supplied from the building. When it is determined that the carbon dioxide can be recovered by the above, the carbon dioxide can be recovered by the electric power from the building, and the carbon dioxide cannot be recovered by the electric power supplied from the building. In addition, the carbon dioxide may be recovered by the electric power supplied from the battery of the vehicle.

Further, the present invention may be configured such that the controller determines whether or not the electric power can be supplied from the building based on the battery of the vehicle or the amount of electric power used in the building.

Further, in the present invention, the controller specifies the room or space in which a person exists in the building for the recovery of the carbon dioxide, and preferentially releases the carbon dioxide from the room or space in which the specified person exists. It may be configured to be recovered.

Further, in the present invention, the controller identifies the room or space having a high concentration of carbon dioxide in the building, and the recovery of the carbon dioxide is prioritized from the specified room or space having a high concentration of carbon dioxide. May be configured to recover the carbon dioxide.

Further, the present invention may be configured such that the carbon dioxide capture is executed at a time when the unit price of the electric power supplied from the building is low.

Further, the present invention may be configured such that when the power is supplied from the building, the carbon dioxide is recovered during a time period in which the power supply exceeds the demand for the power and surplus power is generated. ..

Further, according to the present invention, the vehicle control system includes a fuel conversion device for converting the recovered carbon dioxide into fuel, and the controller has a case where the recovered amount of the recovered carbon dioxide is equal to or more than a predetermined amount. In addition, the fuel conversion device may be configured to carry out the fuel conversion process of the recovered carbon dioxide.

Further, in the present invention, the controller determines whether or not there is a storage tank outside the vehicle capable of taking out and storing the recovered carbon dioxide, and the storage tank is outside the vehicle. When it is determined, the recovered carbon dioxide may be taken out to the storage tank and the fuel conversion process may be executed.

Further, in the present invention, when the controller determines that the storage tank is not outside the vehicle, when supplying electric power from the building, the surplus electric power supply exceeds the demand for the electric power. It may be configured to perform the fuel conversion process of the recovered carbon dioxide by the surplus electric power when it is determined whether or not the surplus electric power is generated.

Further, according to the present invention, when the controller determines that the surplus electric power is not generated, it determines whether or not the execution of the fuel conversion process can be postponed until the surplus electric power is generated, and the fuel conversion process is performed. When it is determined that the execution of the process can be postponed, the execution of the fuel conversion process is postponed until the surplus electric power is generated, and the fuel conversion process is executed at the timing when the surplus electric power is generated, and the fuel conversion process is performed. If it is determined that the execution of the above cannot be postponed, the fueling process may be configured to be executed by the electric power supplied from the building, which is not the surplus electric power.

Further, the present invention may be configured to determine whether or not the fuel conversion process can be postponed based on the usage schedule of the vehicle until the surplus electric power is generated.

Further, in the present invention, the vehicle control system includes _{a bypass valve that can change the flow path of the inflowing gas between the CO 2} recovery device side and the atmosphere side, and the controller transfers the carbon dioxide from the building. At the time of _{recovery, the current recovery amount of the CO 2} recovery device is detected, and when the detected recovery amount of carbon dioxide is equal to or more than a predetermined predetermined amount, the gas flows into the atmosphere side. May be configured to control the bypass valve.

The present invention may be configured such that the carbon dioxide recovery is performed while the vehicle is parked or stopped.

In the present invention, carbon dioxide contained in the air inside the building can be recovered while parking. That is, according to the present invention, carbon dioxide normally discharged into the atmosphere from the ventilation port can be _{recovered by the CO 2} recovery device mounted on the vehicle Ve. Further, when electric power can be supplied from the building, carbon dioxide is recovered without using the electric power of the vehicle battery. Therefore, for example, it is possible to avoid or suppress inconveniences such as insufficient energy when recovering carbon dioxide due to a decrease in the remaining charge of the battery. Further, by recovering carbon dioxide in the building in this way, the _{opportunity or frequency of using the CO 2} recovery device increases, and the CO ₂ recovery device can be effectively utilized.

Further, in the present invention, it is configured to identify a room in which a person exists and preferentially recover carbon dioxide contained in the room. That is, since it is expected that the room in which a person exists has a higher concentration of carbon dioxide than the room in which no person exists, carbon dioxide can be recovered more efficiently.

Further, in the present invention, the carbon dioxide is recovered in a time zone in which the unit price of electric power is low or in a time zone in which surplus electric power is generated when the supply of electricity exceeds the demand. It is assumed that the unit price of electricity is lower than in normal times during the time when surplus electricity is generated. Therefore, the cost of recovering carbon dioxide can be suppressed by recovering carbon dioxide during the time when the unit price of electric power is low or when the surplus power is generated.

Further, in the present invention, _{the carbon dioxide recovered by the CO 2} recovery device is configured to be used as fuel. That is, it is configured to generate fuel using the recovered carbon dioxide as a raw material. Therefore, for example, since the generated fuel can be used as the fuel for the internal combustion engine, the consumption of newly supplied fuel can be suppressed, and the amount of carbon dioxide emitted due to the consumption of the fuel can also be reduced. .. Further, by reusing carbon dioxide as a fuel or a raw material in this way, it is possible to suppress the emission of carbon dioxide into the atmosphere.

Further, in the present invention, when the amount of carbon dioxide recovered reaches the limit value during the recovery of carbon dioxide, the bypass valve is controlled to _{move the flow path of the inflowing gas from the CO 2} recovery device side to the atmosphere side. It is configured to change. Therefore, the CO ₂ recovery apparatus, excessive can be prevented that the gas flows containing carbon dioxide, so that it is possible to prevent the durability of the CO ₂ recovery apparatus is lowered. Further, by changing the flow path to the atmosphere side in this way, the gas is discharged from the ventilation port to the atmosphere, so that it is possible to suppress the deterioration of the ventilation performance in the building.

Then, in the present invention, by recovering carbon dioxide as described above and converting the recovered carbon dioxide into fuel as a raw material, carbon dioxide emissions can be reduced, and by extension, CO ₂ gas in the atmosphere. It can help control the increase.

It is a figure which shows typically the control system of the vehicle equipped with the _{CO 2} recovery device in 1st Embodiment of this invention. It is a block diagram for demonstrating the structure of the ECU in 1st Embodiment of this invention. It is a flowchart for demonstrating an example of the control of a vehicle in 1st Embodiment of this invention. It is a flowchart for demonstrating an example of control of a building in 1st Embodiment of this invention. It is a figure which shows typically the control system of the vehicle equipped with the _{CO 2} recovery device in the 2nd Embodiment of this invention. It is a flowchart for demonstrating an example of control in 2nd Embodiment of this invention. It is a figure for demonstrating the 3rd Embodiment of this invention, and is the figure which shows typically the bypass valve provided in the ventilation port of a building in particular. It is a block diagram for demonstrating the structure of the ECU in 3rd Embodiment of this invention. It is a flowchart for demonstrating an example of control in 3rd Embodiment of this invention. It is a figure which shows typically the control system of the vehicle equipped with the _{CO 2} recovery device in 4th Embodiment of this invention. It is a block diagram for demonstrating the structure of the ECU in 4th Embodiment of this invention. It is a flowchart for demonstrating an example of control in 4th Embodiment of this invention. It is a flowchart for demonstrating an example of control in 5th Embodiment of this invention. It is a flowchart for demonstrating an example of control in 6th Embodiment of this invention.

An embodiment of the present invention will be described with reference to the drawings. It should be noted that the embodiments shown below are merely examples of cases where the present invention is embodied, and do not limit the present invention.

(First Embodiment)
Control system according to the present invention is provided in a vehicle CO ₂ recovery apparatus is installed, configured to recover the carbon dioxide contained in the air in a building provided outside the vehicle by its CO ₂ recovery apparatus Will be done. The building includes an office, a store, a factory, a warehouse, and the like in addition to a residence, and in each of the following embodiments, the building will be described as a residence. FIG. 1 schematically shows an example of a vehicle Ve equipped with such a _{CO 2 recovery device 1.} The vehicle Ve sucks in a CO ₂ recovery device 1, an internal combustion engine (hereinafter, also referred to as an engine) 2 such as a gasoline engine or a diesel engine as a driving force source, and a gas containing inflowing carbon dioxide, and recovers _{CO 2.} It includes a pump 3 for discharging carbon dioxide and a battery 4 for supplying power for recovering carbon dioxide.

The CO ₂ recovery device 1 includes an adsorption unit (also referred to as a _{CO 2} tank) 5 that temporarily stores the adsorbed carbon dioxide by adsorbing the carbon dioxide. Further, the CO ₂ recovery device 1 is provided by being connected to the exhaust system 6 of the engine 2, and is capable of recovering carbon dioxide mainly contained in the exhaust gas from the engine 2 during traveling. In addition to the carbon dioxide contained in the exhaust gas, the CO ₂ recovery device 1 is capable of recovering carbon dioxide contained in the atmosphere or in the air inside the building 7 or the vehicle Ve, and in particular, FIG. In the example shown in (1), the building 7 and the vehicle Ve are connected to recover carbon dioxide contained in the air inside the building while the vehicle is parked (or stopped).

The building 7 is provided with a ventilation fan 8 in a predetermined room, and is also provided with a ventilation port 9 in which the exhaust gas discharged from the ventilation fan 8 is collected in one place and discharged collectively. The number of ventilation ports 9 is not limited to one, and a plurality of ventilation ports 9 may be provided, for example, corresponding to each ventilation fan 8. Further, the building 7 is provided with a power supply port 10 capable of supplying power to the vehicle Ve. Further, a solar panel 11 capable of generating electricity by sunlight is provided on the roof of the building 7. Then, in the example shown in FIG. 1, the ventilation port 9 of the building 7 and the vehicle Ve are connected by, for example, a hose. Further, the vehicle Ve and the power supply port 10 of the building 7 are connected by a power transmission cable.

Here, the recovery of carbon dioxide by the CO ₂ recovery device 1 will be described. The CO ₂ recovery device 1 uses a gas containing carbon dioxide in the building, an exhaust containing carbon dioxide discharged from the engine 2 to the exhaust system 6, or a gas containing carbon dioxide inside or outside the vehicle Ve as a trapping agent. It is configured to recover carbon dioxide from exhaust and gas by contact. Examples of the carbon dioxide capture (recovery method) include a physical adsorption method, a physical absorption method, a chemical absorption method, and a deep cold separation method.

The physical adsorption method desorbs carbon dioxide from the solid adsorbent by adsorbing carbon dioxide to the solid adsorbent by contacting a solid adsorbent such as activated carbon or zeolite with exhaust or gas and heating or reducing the pressure. It is a method of collecting.

In the physical absorption method, an absorption liquid such as methanol or ethanol capable of dissolving carbon dioxide is brought into contact with exhaust or gas to physically absorb carbon dioxide into the absorption liquid under high pressure or low temperature, and heating or depressurization is performed. This is a method of recovering carbon dioxide from the absorption liquid.

In the chemical absorption method, carbon dioxide is absorbed into the absorption liquid by a chemical reaction by contacting an absorption liquid such as amine that can dissolve carbon dioxide with exhaust or gas, and carbon dioxide is absorbed from the absorption liquid by heating. Is a method of dissociating and recovering.

The deep cold separation method is a method of recovering carbon dioxide by compressing and cooling exhaust gas or gas to liquefy carbon dioxide and distilling the liquefied carbon dioxide.

In the embodiment of the present invention, the physical adsorption method is adopted for the recovery of carbon dioxide, and the carbon dioxide in the exhaust, the air, or the atmosphere is adsorbed and recovered by the trapping agent of activated carbon or zeolite. There is. In addition, the capture of carbon dioxide by a scavenger is reversible, for example, it captures carbon dioxide in a low temperature state and releases carbon dioxide in a high temperature state. Alternatively, it captures carbon dioxide at a high pressure to some extent and releases carbon dioxide as the pressure decreases.

An electronic control device (ECU) 12 for controlling the CO _{2 recovery device 1 is provided.} The ECU 12 corresponds to the "controller" in the embodiment of the present invention, is configured mainly by a microcomputer, performs calculations using input data, data stored in advance, and the like, and performs calculations thereof. By outputting the result of the calculation as a command signal, it is configured to control the supply and stop of exhaust air and air to the adsorption unit 5, the adsorption of carbon dioxide by the adsorption unit 5, and the desorption of carbon dioxide.

FIG. 2 is a block diagram of the ECU 12 having such a function, and data detected by various sensors such as the amount of carbon dioxide recovered is input to the ECU 12. _{The ECU 12 determines the connection between the CO 2} recovery amount detection unit 13 that detects the amount of carbon dioxide recovered and the amount of adsorption in the adsorption unit 5, the vehicle Ve, and the ventilation port 9 in the building 7 based on the input detection data. It includes a ventilation port connection determination unit 14, _{a power supply control unit 15 that controls the power supplied to the CO 2} recovery device 1, and a pump control unit 16 that controls the operation of the pump 3. In the embodiment of the present invention, since carbon dioxide contained in the air inside the building 7 is mainly recovered, the vehicle Ve and the building 7 can communicate with each other.

Here, the detection of the amount of carbon dioxide recovered will be described. For example, the concentration of carbon dioxide contained in the chamber of the building 7, in the normal time, such as daily, the CO ₂ recovering apparatus 1 because it is found that the experimental value is a value falling to a constant value or a predetermined range of such If the amount of air to be circulated is known, the amount of carbon dioxide supplied _{to the CO 2 recovery device 1 can be known.} Further, the proportion of carbon dioxide that can be captured by the adsorption unit 5 varies depending on the temperature and flow velocity of the air, but can be known based on an experiment or the like. Therefore, the amount of carbon dioxide recovered per unit time (adsorption amount) can be detected by measuring the flow rate, flow velocity, temperature, etc. of the air flowing into the adsorption unit 5, and the detected recovery amount is integrated. The amount of carbon dioxide captured by the adsorption unit 5, that is, the amount of carbon dioxide recovered is obtained. Further, the amount of carbon dioxide recovered can be detected by providing a sensor such as a flow rate sensor on the upstream side or the downstream side of the adsorption unit 5 and calculating based on the detection signal. In addition, a sensor that directly detects the amount of carbon dioxide captured by the adsorption unit 5 and a tank that stores carbon dioxide desorbed from the adsorption unit 5 are provided (not shown), and the pressure of the storage tank is used. A sensor for detecting the amount of carbon dioxide in the tank can also be provided, and in such a case, the total amount of carbon dioxide already recovered can be detected.

The vehicle Ve configured in this way can recover carbon dioxide by the _{CO 2 recovery device 1 as described above.} On the other hand, _{in a vehicle equipped with a conventionally known CO 2} recovery device 1, carbon dioxide is only recovered from exhaust gas and the atmosphere during traveling, and the _{opportunity to use the CO 2} recovery device 1 is limited. Therefore, in the embodiment of the present invention, _{carbon dioxide is recovered by using the CO 2} recovery device 1 when the vehicle is not running, such as when parking. In particular, in the embodiment of the present invention, carbon dioxide contained in the building is used. It is configured to recover carbon. An example of control executed by the ECU 12 will be described below.

FIG. 3 is a flowchart showing an example of the control. First, it is determined whether or not the vehicle Ve and the ventilation port 9 of the building 7 are connected (step S1). As described above, this control example is a control for recovering carbon dioxide contained in a building. Therefore, in this step S1, it is determined whether or not the vehicle Ve is connected to the ventilation port 9 of the building 7. The determination of the connection with the ventilation port 9 is determined by, for example, the above-mentioned ventilation port connection determination unit 14. Therefore, if it is determined negatively in step S1, that is, if it is determined that the vehicle Ve and the ventilation port 9 are not connected, this control is temporarily terminated without executing the subsequent control. To do.

On the contrary, if it is determined affirmatively in this step S1, that is, if it is determined that the vehicle Ve and the ventilation port 9 are connected, the ventilation fan 8 is turned to the control system in the building 7. Request the start of control (step S2). That is, in order to recover the carbon dioxide contained in the building, the building 7 is requested to discharge the air from the ventilation port 9.

Then, after confirming that the control of the ventilation fan 8 of the building 7 has been started, it is determined whether or not power can be supplied from the building 7 (step S3). This is a step for determining whether to recover the electric power required for recovering carbon dioxide in the building by the electric power from the building 7 or by the electric power stored in the battery 4 of the vehicle Ve. .. For example, when the remaining charge of the battery 4 of the vehicle Ve is relatively small and is equal to or less than a predetermined predetermined value, a positive determination is made in step S3. Further, for example, when the electric load in the building is high and a large amount of electric power is consumed, a negative determination is made in this step S3. Therefore, if it is negatively determined in step S3, that is, if it is determined that the electric power in the building is not used, the pump 3 is operated by the battery 4 of the vehicle Ve to recover the carbon dioxide in the building. (Step S4).

On the contrary, when it is determined positively in step S3, that is, when it is determined to use the electric power of the building 7, the electric power is supplied from the building 7 to operate the pump 3 and the pump 3 is included in the building. The carbon dioxide is recovered (step S5). When carbon dioxide is recovered using the power from the building 7, for example, during the time when the unit price of power is low (for example, at night or during the day when surplus power is generated), or when the power supply exceeds the demand for surplus power. It is preferable to carry out by.

Further, in either case of recovering carbon dioxide using the electric power of the battery 4 in step S4 or recovering carbon dioxide using the electric power in the building in step S5, the concentration of carbon dioxide. It is preferable to recover the carbon dioxide during the time when the value is high. For example, if the building 7 is a residence, carbon dioxide is recovered during the time when a person returns home from the evening to the night and uses electric appliances such as home appliances or a gas stove. That is, by recovering the carbon dioxide in the building during the time when the concentration of carbon dioxide is high, it is possible to recover more carbon dioxide by one recovery, and the electric power consumed at the time of the recovery can be suppressed.

Then, it is determined whether or not the adsorption amount (that is, the storage amount) of the adsorption unit 5 has reached the limit value (step S6). This is a step of determining whether or not the amount of carbon dioxide adsorbable by the adsorption unit 5 has reached the limit value by recovering carbon dioxide in step S4 or step S5. If a separate CO ₂ tank is provided, it is determined whether or not the _{CO 2 tank is full. For example, the CO 2} recovery amount detection unit 13 can determine whether or not the value is the limit value. Therefore, if it is negatively determined in step S6, that is, if it is determined that the amount of carbon dioxide adsorbed by the adsorption unit 5 has not reached the limit value, the amount of carbon dioxide adsorbed by the adsorption unit 5 reaches the limit value. This step S6 is repeated until, or until the recovery of carbon dioxide in the building is completed.

On the other hand, if it is positively determined in step S6, that is, if it is determined that the amount of carbon dioxide adsorbed by the adsorption unit 5 has reached the limit value, the pump 3 is stopped and the ventilation fan 8 is stopped. The control system of the building 7 is requested to do so (step S7). That is, since the amount of adsorption has reached the limit value, the recovery of carbon dioxide is stopped. Even if the adsorption amount does not reach the limit value, even if it is determined that the recovery of carbon dioxide in the building is completed, it is requested to stop the pump 3 and the ventilation fan 8 in the same manner. I do.

Here, a control example of the building 7 that has received the request for control of the ventilation fan 8 in steps S2 and S7 will be described. FIG. 4 is a flowchart showing an example of the control. First, it is determined whether or not a request for starting control of the ventilation fan 8 has been received from the vehicle Ve (step S10). This is positively determined when there is a request from the vehicle Ve to turn the ventilation fan 8 due to the connection between the vehicle Ve and the ventilation port 9 in steps S1 and S2 in FIG. 3 described above. Therefore, if a negative determination is made in step S10, that is, if there is no request to start control of the ventilation fan 8, this control is temporarily terminated without executing subsequent control.

On the contrary, when a positive judgment is made in step S10, that is, when there is a request to start control of the ventilation fan 8, the control of turning the ventilation fan 8 is started, and the notification is set to the vehicle Ve. (Step S11).

Further, after notifying the start of control of the ventilation fan 8 in step S11, it is determined whether or not there is a request to stop the control of the ventilation fan 8 (step S12). This is a step of determining whether to stop or end the control of the started ventilation fan 8. For example, when there is a request to stop the ventilation fan 8 in step S7 in FIG. 3 described above, it is determined positively. Therefore, if a negative determination is made in step S12, that is, if the request for stopping control of the ventilation fan 8 has not yet been received, this step S12 is repeatedly executed until there is a request for stopping control of the ventilation fan 8. On the contrary, when a positive judgment is made in step S12, that is, when a request to stop control of the ventilation fan 8 is received, the ventilation fan 8 is stopped (step S13), and this control example ends.

As described above, in the embodiment of the present invention, carbon dioxide contained in the air inside the building can be recovered during parking. That is, normally, carbon dioxide emitted into the atmosphere from the ventilation port 9 can be _{recovered by the CO 2} recovery device 1 mounted on the vehicle Ve. Further, when electric power can be supplied from the building 7, carbon dioxide is recovered without using the electric power of the battery 4 of the vehicle Ve, so that the remaining charge of the battery 4 is reduced, for example. By doing so, it is possible to avoid or suppress inconveniences such as insufficient energy when recovering carbon dioxide.

Moreover, by this way recover carbon dioxide in the building, CO ₂ used the opportunity or the frequency of the recovery device 1 is increased, it becomes possible to effectively utilize the CO ₂ recovering apparatus 1. Further, _{by increasing the frequency of use of the CO 2} recovery device 1, it is possible to promote the recovery of carbon dioxide according to the use thereof, which in turn can contribute to the suppression of global warming.

(Second Embodiment)
The recovery of carbon dioxide is not limited to the recovery from all the rooms provided with the ventilation fan 8, and may be configured to preferentially recover carbon dioxide from any room (or space). The example shown in FIG. 5 is an example configured to recover carbon dioxide only from a specific room (for example, a room in which a person exists). Further, FIG. 6 is a flowchart illustrating an example of control of the building 7 when carbon dioxide is recovered only from the room in which the person exists. The basic configuration of this control example is the same as that of the above-mentioned control example, and the control example executed by the ECU 12 of the vehicle Ve is the same as that of FIG. 3, so the description thereof is omitted here. Further, regarding the control example of the building 7, the same step numbers are assigned to the control contents similar to those in FIG. 4, and the description thereof will be omitted or simplified.

First, it is determined whether or not the vehicle Ve has received the request to start the control of the ventilation fan 8 (step S10), and if it is positively determined in this step S10, that is, there is a request to start the control of the ventilation fan 8. In that case, the room in which the person exists is specified (step S20). Then, after identifying the room in which the person is present in step S20, the control of the ventilation fan 8 in the room in which the person is present is started, and the vehicle Ve is notified that the control has been started (step S30).

Upon receiving the notification, the vehicle Ve recovers carbon dioxide only from the room in which a person exists in the control example of FIG. Then, after notifying the start of control of the ventilation fan 8 in step S30, it is determined in step S7 in FIG. 3 described above whether or not there is a request to stop the ventilation fan 8 (step S12), and the request to stop the ventilation fan 8 is made. If there is, the ventilation fan 8 in the room where the person is present is stopped (step S13), and this control example ends. In the example shown in FIG. 6, only the room in which a person exists is specified and carbon dioxide is recovered from the room, but for example, a room or space having a high concentration of carbon dioxide is given priority. It may be configured to recover the carbon dioxide.

As described above, in the above-mentioned control example, the room (or space) in which a person exists is specified, and the carbon dioxide contained in the room is preferentially recovered. That is, since it is expected that the room in which a person exists has a higher concentration of carbon dioxide than the room in which no person exists, carbon dioxide can be recovered more efficiently.

(Third Embodiment)
Next, an example of controlling the bypass valve 17 provided in the ventilation port 9 according to the amount of carbon dioxide flowing into the _{CO 2} recovery device 1 when recovering carbon dioxide from the building 7 will be described. As described above, in the embodiment of the present invention, the carbon dioxide in the building is configured to be recovered by the _{CO 2 recovery device 1.} On the other hand, for example, when the amount of carbon dioxide adsorbed by the adsorption unit 5 reaches the limit value that can be adsorbed by recovering carbon dioxide, carbon dioxide cannot be adsorbed and the ventilation performance in the building deteriorates. There is. Alternatively, if the recovery of carbon dioxide continues beyond the limit value of the adsorption amount, _{the durability of the CO 2} recovery device 1 may decrease. Therefore, in the embodiment of the present invention, a bypass valve 17 as shown in FIG. 7 is provided in the ventilation port 9 so as _{to control the flow path of the inflowing gas to either the CO 2} recovery device side or the atmosphere side. Has been done. Normally, during the recovery of carbon dioxide, the bypass valve 17 is controlled so that the gas flows into the _{CO 2 recovery device 1.}

FIG. 8 is a block diagram showing an ECU 12 including a valve control unit 18 that controls the valve. Since the configurations of the other control units are the same as those of the block of FIG. 2 described above, the description thereof will be omitted. FIG. 9 is a flowchart showing an example of control executed by the ECU 12. First, _{it is determined whether or not the adsorption amount of the CO 2} recovery device 1 has reached the limit value (step S50). This can be determined from the amount of carbon dioxide recovered input to the ECU 12. Incidentally, the determination whether adsorption amount limit value, another amount of carbon dioxide flowing, amount of gas containing carbon dioxide, accumulated time to recover carbon dioxide in the CO ₂ recovery apparatus 1 or,, the CO ₂ recovery apparatus 1 It may be judged by whether or not the pressure of the gas flowing into the gas is equal to or higher than a predetermined threshold.

Therefore, if a negative determination is made in step S50, that is, if the amount of carbon dioxide adsorbed has not reached the limit value, this control example ends. On the contrary, when a positive judgment is made in this step S50, that is, when it is judged that the amount of carbon dioxide adsorbed has reached the limit value, the gas discharged from the ventilation port 9 is discharged to the atmosphere. The bypass valve 17 is controlled so as to be performed (step S60).

As described above, in the control example shown in FIG. 9, when the adsorption amount of the adsorption unit 5 reaches the limit value during the recovery of carbon dioxide, the bypass valve 17 is controlled to control the flow path of the inflowing gas. Is configured to change to the atmosphere side. Therefore, the CO ₂ recovering apparatus 1, excessively possible to suppress the gas flows containing carbon dioxide, so that the durability of the CO ₂ recovery apparatus 1 can be prevented from being lowered. In other words, the CO ₂ recovery device 1 can be protected. Further, by changing the flow path to the atmosphere side in this way, it is possible to suppress the inability to ventilate the building 7 because the gas is discharged from the ventilation port 9 to the atmosphere.

(Fourth Embodiment)
Next, a control example of converting the recovered carbon dioxide into fuel will be described. In the above-mentioned example, the carbon dioxide in the building was configured to be recovered by the _{CO 2 recovery device 1.} It is known that carbon dioxide can produce fuels such as methane, ethylene, methanol and ethanol by reacting with, for example, hydrogen, water, metal hydrides, or other chemical substances. FIG. 10 is a diagram schematically showing a vehicle Ve provided with a fuel conversion device 19 capable of producing the fuel as described above and converting the recovered carbon dioxide into fuel. Further, FIG. 11 is a block diagram of the ECU 12 provided with the fuel conversion control unit 20. Hereinafter, the control executed by the ECU 12 will be described.

FIG. 12 is a flowchart showing an example of the control, and is a control example when the carbon dioxide recovered by the _{CO 2 recovery device 1 is converted into fuel.} In the embodiment of the present invention, as described above, the purpose is to mainly recover the carbon dioxide in the building. Therefore, although the carbon dioxide recovered from the building is used as fuel, the carbon dioxide in the building is used. The carbon dioxide recovered from the exhaust gas or the atmosphere may be used as fuel without limitation.

First, it is determined whether or not the amount of adsorption in the adsorption unit 5 is equal to or greater than a predetermined amount α (step S100). This step is a step of determining the adsorbed amount (that is, the recovered amount) when the carbon dioxide recovered by the _{CO 2 recovery device 1 is converted into fuel.} When it is converted to fuel, it consumes a lot of electricity. Therefore, it is preferable to fuel the fuel with a certain amount of carbon dioxide recovered, and the threshold value for determining the start of the fuel conversion is set so that the adsorption amount is at least 50% or more of the limit value. To. Therefore, if it is negatively determined in step S100, that is, if the adsorption amount is less than the predetermined amount α, this control is temporarily terminated without executing the subsequent control.

On the contrary, if it is positively determined in step S100, that is, if it is determined that the adsorption amount is equal to or more than the predetermined amount α, is the vehicle Ve and the power supply port 10 of the building 7 connected? It is determined whether or not (step S110). As described above, since the conversion of carbon dioxide to fuel consumes a large amount of electric power, it is preferable to use the electric power in the building including the electric power generated by the solar panel 11. Therefore, for example, when the vehicle and the power supply port 10 of the building 7 are not connected, a negative determination is made in this step S110. If it is negatively determined in step S110, that is, if it is determined that the vehicle Ve and the power supply port 10 of the building 7 are not connected, this control is temporarily terminated without executing the subsequent control. To do.

On the other hand, if it is determined affirmatively in step S110, that is, if it is determined that the vehicle Ve and the power supply port 10 in the building are connected, the fuel conversion process is started (step S120). That is, the fuel conversion device 19 is operated, and the recovered carbon dioxide is reacted with the above-mentioned chemical substance (for example, hydrogen) to generate fuel such as methane.

Then, by starting the above fuel conversion treatment, it is determined whether or not the adsorption amount in the adsorption unit 5 is reduced and the adsorption amount is reduced to a predetermined predetermined amount β or less (step S130). That is, it is determined whether or not to end the fuel conversion process of the recovered carbon dioxide. The predetermined amount β is set to, for example, a value close to “0” or “0”, and when the adsorption amount is equal to or less than the predetermined amount β, it is positively determined in step S130. Therefore, if a negative determination is made in step S130, that is, if the adsorption amount is still larger than the predetermined amount β, this step 130 is repeatedly executed until a positive determination is made in this step S130. On the contrary, if it is positively determined in this step S130, that is, if it is determined that the adsorption amount is equal to or less than a predetermined amount β that is close to “0” or “0”, the fuel conversion process is stopped. (Step S140). That is, the operation of the fuel conversion device 19 is stopped.

As described above, in the control example shown in FIG. 12, _{the carbon dioxide recovered by the CO 2} recovery device 1 is configured to be used as fuel. That is, it is configured to generate fuel using the recovered carbon dioxide as a raw material. Therefore, for example, since the generated fuel can be used as the fuel for the internal combustion engine, the consumption of the fuel newly supplied from the outside can be suppressed, and the amount of carbon dioxide emitted due to the consumption of the fuel can also be reduced. Can be done. Further, by reusing carbon dioxide as a fuel or a raw material in this way, it is possible to suppress the emission of carbon dioxide into the atmosphere.

(Fifth Embodiment)
As described above, when the recovered carbon dioxide is converted into fuel, a large amount of electric power is consumed. Therefore, it is possible to suppress the cost at the time of fuel conversion by performing the electric power at the time of fuel conversion, for example, at the time when surplus electric power is generated. The surplus electric power referred to here means electric power in a time zone in which the electric power supply (power generation amount) exceeds the electric power demand (consumption amount) due to solar power generation or the like, for example, in the daytime. Alternatively, it means the electric power in the time zone when the electric power demand decreases and the electric power supply becomes surplus such as in the middle of the night. In addition, it is assumed that the unit price of electric power is low during the time period when such surplus electric power is generated. Therefore, in the control example shown below, the surplus electric power is used to convert the recovered carbon dioxide into fuel.

In addition, in the time zone when surplus electric power is generated in the daytime, the vehicle Ve is usually used as compared with the nighttime. Therefore, if there is a storage tank outside the vehicle Ve (for example, a house) that takes out the recovered carbon dioxide and temporarily stores it, the carbon dioxide is taken out into the storage tank and fueled with surplus electric power. On the contrary, if there is no storage tank that can be temporarily taken out outside the vehicle Ve, the surplus electricity in the daytime cannot be used for fuel. In the example shown below, the case where the storage tank is outside the vehicle Ve and the case where the storage tank is not present will be described separately.

FIG. 13 is a control example when there is a storage tank outside the vehicle Ve. First, it is determined whether or not the carbon dioxide recovered by the vehicle Ve can be taken out to the storage tank (step S200). This is, for example, a step of determining the current storage amount of a storage tank provided at home and determining whether or not the recovered carbon dioxide can be transferred from the vehicle Ve to the storage tank. For example, if the amount of carbon dioxide stored in the current storage tank at home is large _{and the carbon dioxide recovered by the CO 2} recovery device 1 cannot be transferred to the storage tank, a negative determination is made in step S200. On the contrary, for example, when the amount of _{carbon dioxide stored in the current storage tank at home is small and the carbon dioxide recovered by the CO 2} recovery device 1 can be transferred to the storage tank, a positive judgment is made in this step S200. To.

Therefore, if it is negatively determined in step S200, that is, if it is determined that carbon dioxide cannot be taken out to the storage tank, the carbon dioxide currently stored in the storage tank is converted into fuel (step). S210). That is, in _{order to transfer the carbon dioxide recovered by the CO 2} recovery device 1 to a storage tank provided outside the vehicle Ve, the carbon dioxide stored in the storage tank is converted into fuel.

On the other hand, if it is positively determined in step S200, that is, if it is determined that carbon dioxide can be taken out to the storage tank, carbon dioxide is taken out to the storage tank provided outside (step S220). Then, the carbon dioxide transferred to the storage tank is converted into fuel at the timing when surplus electric power is generated (step S230). The timing at which this surplus power is generated can be grasped by sequentially communicating with the electric power company.

(Sixth Embodiment)
Next, a control example will be described when a storage tank is not provided outside the vehicle Ve when the surplus electric power is used as fuel. FIG. 14 is a flowchart showing an example of the control. First, it is determined whether or not the current amount of carbon dioxide adsorbed (that is, the amount stored) by the adsorption unit 5 is equal to or greater than a predetermined amount (step S300). This is a step of determining whether or not to use fuel, and as described above, when fuel is used, a large amount of electric power is consumed. Therefore, when the adsorption amount is equal to or more than the predetermined adsorption amount, for example, when 50% or more of the adsorption amount is stored with respect to the limit value, a positive determination is made in this step S300. Therefore, if it is negatively determined in step S300, that is, if the current adsorption amount is less than a predetermined amount and it is determined that fuel conversion is not executed, no further control is executed. This control example ends once.

On the contrary, if it is positively determined in step S300, that is, if the current adsorption amount is equal to or more than a predetermined amount and it is determined that fuel conversion is to be performed, whether or not surplus power is generated. Is determined (step S310). As in the above-mentioned example, the timing at which the surplus power is generated can be grasped by sequentially communicating with the electric power company. Therefore, if it is positively determined in step S310, that is, if it is determined that surplus electric power is generated, the surplus electric power is used for fuel conversion (step S320). That is, the power supply port 10 of the house and the vehicle Ve are connected to convert the carbon dioxide recovered by the _{CO 2 recovery device 1 into fuel.}

On the other hand, if it is negatively determined in step S310, that is, if it is determined that surplus power is not generated, it is determined whether fuel conversion can be postponed until the time zone in which surplus power is generated (step S330). ). This is because it is assumed that the unit price of electric power is high when surplus electric power is not generated at present. Therefore, if the fuel conversion process can be postponed until the time when the surplus power is generated, the execution of the fuel conversion process is postponed until the time when the surplus power is generated. The case where the fuel conversion process can be postponed means, for example, the case where the vehicle Ve is not used until the time when the surplus electric power is generated, and is determined based on the vehicle usage schedule (or usage plan).

Therefore, if it is determined positively in step S330, that is, if it is determined that the fuel conversion can be postponed until the time when the surplus electric power is generated, the process returns to step S310.

On the contrary, if it is negatively determined in step S330, that is, if it is determined that the fuel conversion cannot be postponed until the time when the surplus power is generated, the fuel conversion is performed regardless of the surplus power, or , Abandon the fuel conversion (step S340). That is, since it is determined that the vehicle Ve cannot be made to stand by until the time when the surplus electric power is generated, the fuel is converted from the electric power supplied from the power supply port 10 without waiting for the generation of the surplus electric power. Alternatively, abandon fuel conversion at the current timing. When the fuel conversion is abandoned at the current timing, the fuel conversion is performed after the time when the vehicle Ve is not used and the timing when the surplus electric power is generated is waited for.

As described above, when the storage tank is outside the vehicle Ve, the recovered carbon dioxide can be appropriately taken out to the storage tank. Therefore, fuel can be converted at the timing when surplus electric power is generated, and as a result, carbon dioxide can be efficiently converted into fuel. In addition, since it is assumed that the unit price of surplus electric power is lower than that in normal times, the cost of converting it into fuel can be suppressed. Further, even if the storage tank is not outside the vehicle Ve, if surplus electric power is currently generated, the surplus electric power is used for fuel conversion. Further, at present, even if the surplus power is not generated, if the fuel conversion can be postponed until the surplus power is generated, the fuel conversion is performed at the timing when the surplus power is generated. Therefore, in such a case, it is possible to efficiently convert the recovered carbon dioxide into fuel as in the case where the above-mentioned storage tank is outside the vehicle Ve.

Although each embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned examples, and may be appropriately modified as long as the object of the present invention is achieved. In each of the above-described embodiments, the pump 3 and the fuel conversion device 19 are configured to be mounted on the vehicle Ve, but the pump 3 and the fuel conversion device 19 are not mounted on the vehicle Ve but are provided outside the vehicle Ve. May be done. For example, when the pump 3 and the fueling device 19 are not mounted on the vehicle Ve, the weight of the vehicle Ve can be reduced, so that the fuel consumption is lower than when the pump 3 and the fueling device 19 are mounted on the vehicle Ve. It is possible to improve.

Further, as described above, the gas containing carbon dioxide to be recovered is not limited to the exhaust gas from the engine 2 in the air inside the building, but also includes the outdoor air (atmosphere) of the vehicle Ve or the indoor air of the vehicle Ve. It's fine. Therefore, the vehicle Ve targeted in the present invention is not limited to a vehicle equipped with an engine 2 or a hybrid vehicle equipped with an engine 2 and a motor. For example, an electric vehicle or an engine equipped with only a motor as a driving force source. It may be a so-called range extender EV vehicle equipped with 2 exclusively for power generation, or a fuel cell vehicle equipped with a fuel cell as an energy source.

1 ... CO ₂ recovery device, 2 ... engine, 3 ... pump, 4 ... battery, 5 ... suction part, 6 ... exhaust system, 7 ... building, 8 ... ventilation fan, 9 ... ventilation port, 10 ... power supply port, 11 ... sun Optical panel, 12 ... Electronic control device (ECU), 13 ... CO ₂ recovery amount detection unit, 14 ... Ventilation port connection judgment unit, 15 ... Power supply control unit, 16 ... Pump control unit, 17 ... Bypass valve, 18 ... Valve control Department, 19 ... Fuel conversion device, 20 ... Fuel conversion control unit, Ve ... Vehicle.

Claims (14)

In a vehicle control system equipped with a _{CO 2} recovery device that recovers carbon dioxide from circulating gas.
A controller for controlling the vehicle is provided.
The controller
Judging whether or not the vehicle and the building provided outside the vehicle are connected,
Control of a vehicle equipped with a _{CO 2} recovery device, which is configured to recover carbon dioxide contained in the air in the building when it is determined that the vehicle and the building are connected. system.
In the vehicle control system equipped with the CO _{2 recovery device according to claim 1,}
The controller
When recovering the carbon dioxide, it is determined whether or not the carbon dioxide can be recovered by the electric power supplied from the building.
When it is determined that the carbon dioxide can be recovered by the electric power supplied from the building, the carbon dioxide is recovered by the electric power from the building.
When it is determined that the carbon dioxide cannot be recovered by the electric power supplied from the building, the carbon dioxide is recovered by the electric power supplied from the battery of the vehicle. A vehicle control system equipped with a CO _{2 recovery device.}
In the vehicle control system equipped with the CO _{2 recovery device according to claim 2.}
The controller
_{Equipped with a CO 2} recovery device characterized in that it is configured to determine whether or not the electric power can be supplied from the building based on the battery of the vehicle or the amount of electric power used in the building. Vehicle control system.
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 3.
The controller
The recovery of carbon dioxide is configured to specify a room or space in which a person exists in the building and preferentially recover the carbon dioxide from the room or space in which the specified person exists. A vehicle control system equipped with a characteristic CO _{2 recovery device.}
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 4.
The controller
The carbon dioxide recovery is configured to specify a room or space having a high concentration of carbon dioxide in the building and preferentially recover the carbon dioxide from the specified room or space having a high concentration of carbon dioxide. A vehicle control system equipped with a _{CO 2} capture device, which is characterized in that it is installed.
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 5.
The carbon dioxide capture is a vehicle control system equipped with a _{CO 2} capture device, characterized in that the unit price of electric power supplied from the building is configured to be executed at a low time.
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 6.
Recovery of the carbon dioxide, supplying power from the building, CO ₂ that wherein the supply of the electric power is configured to excess power is carried out has a time zone that occurs over the demand of the power A vehicle control system equipped with a recovery device.
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 7.
The vehicle control system includes a fuel conversion device that fuels the recovered carbon dioxide.
The controller
_{CO 2} recovery is characterized in that when the recovery amount of the recovered carbon dioxide is equal to or more than a predetermined predetermined amount, the fuel conversion device is configured to carry out the fuel conversion process of the recovered carbon dioxide. A vehicle control system equipped with the device.
In the vehicle control system equipped with the CO _{2 recovery device according to claim 8.}
The controller
It is determined whether or not there is a storage tank outside the vehicle that can take out and store the recovered carbon dioxide.
_{A CO 2} recovery device characterized in that when it is determined that the storage tank is outside the vehicle, the recovered carbon dioxide is taken out to the storage tank and the fuel conversion process is executed. Vehicle control system equipped with.
In the vehicle control system equipped with the CO _{2 recovery device according to claim 9.}
The controller
When it is determined that the storage tank is not outside the vehicle, when the electric power is supplied from the building, it is determined whether or not the electric power supply exceeds the demand for the electric power and surplus electric power is generated.
Control of a vehicle equipped with a _{CO 2} recovery device, which is configured to perform the fuel conversion process of the recovered carbon dioxide by the surplus power when it is determined that the surplus power is generated. system.
In the vehicle control system equipped with the CO _{2 recovery device according to claim 10.}
The controller
When it is determined that the surplus power is not generated, it is determined whether or not the execution of the fuel conversion process can be postponed until the surplus power is generated.
When it is determined that the execution of the fuel conversion process can be postponed, the execution of the fuel conversion process is postponed until the surplus electric power is generated, and the fuel conversion process is executed at the timing when the surplus electric power is generated.
_{A CO 2} recovery device characterized in that when it is determined that the execution of the fuel conversion process cannot be postponed, the fuel conversion process is executed by electric power supplied from the building, which is not the surplus electric power. On-board vehicle control system.
In the vehicle control system equipped with the CO _{2 recovery device according to claim 11.}
It is equipped with a _{CO 2} recovery device characterized in that the determination as to whether or not the fuel conversion process can be postponed is made based on the usage schedule of the vehicle until the surplus electric power is generated. Vehicle control system.
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 12.
The vehicle control system includes a bypass valve that can change the flow path of the inflowing gas between the CO ₂ recovery device side and the atmosphere side.
The controller
When recovering the carbon dioxide from the building, the current recovery amount of the _{CO 2 recovery device is detected.
CO 2} is characterized in that the bypass valve is controlled so that the gas flows into the atmosphere when the detected amount of carbon dioxide recovered is equal to or more than a predetermined amount. A vehicle control system equipped with a recovery device.
In the vehicle control system equipped with _{the CO 2} recovery device according to any one of claims 1 to 13.
A vehicle control system equipped with a _{CO 2} recovery device, characterized in that the carbon dioxide recovery is performed while the vehicle is parked or stopped.

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