JP2014092213A - Fuel gas supply device and vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the accuracy of determining that a pressure in each tank is high or low at starting without using a pressure sensor for each tank.SOLUTION: In a fuel cell system 10, valve opening control (pre-valve-control) of opening/closing valves 113f, 113r for both hydrogen gas tanks 110f, 110r is performed once prior to starting operation processing along with the drive of an injector 125, and the transition of in-tank temperatures T1, T2 in both tanks along with the pre-valve-control is seized. When a temperature-rise transition is caused in either the in-tank temperature T1 or the in-tank temperature T2 and the margin of the temperature-rise transition (a degree of rise) is 1°C or higher, the low-gas-pressure tank, for example, the hydrogen gas tank 110r causing the temperature-rise transition is determined as a tank which supplies hydrogen gas to a fuel cell 100 when executing the starting operation processing.

Description

  The present invention relates to a fuel gas supply device and a vehicle equipped with the same.

  When fuel gas is supplied to the gas consuming device, a plurality of fuel gas tanks are used in order to continuously supply gas, and the same applies to gas supply to a fuel cell which is an example of the gas consuming device. And since gas pressure variation may occur between tanks, a method for supplying gas from a plurality of fuel gas tanks to a fuel cell while preventing gas backflow has been proposed (for example, Patent Document 1). . According to this method, there is a temperature difference between the tanks when the vehicle is stopped due to the relationship between the tank mounting positions in the vehicle longitudinal direction, and the tank pressure at the next startup occurs due to the temperature difference when the vehicle is stopped. This is intended to prevent the backflow of gas when starting up.

JP 2008-223784 A

  However, the following problems have been pointed out. If a plurality of tanks are mounted in the vehicle front-rear direction equivalent position, for example, a plurality of tanks horizontally mounted in the vehicle width direction, the temperature caused by the tank mounting position relationship in the vehicle front-rear direction between the tanks when the vehicle stops Since there is no difference, it cannot be said that the tank pressure at the next startup will be high or low. For this reason, a pressure sensor must be provided for each tank, and the pressure for each tank must be measured by the sensor. Along with this, it is indispensable to install a pressure sensor for each tank, which may increase the cost.

  In the above-described method, the temperature sensor provided for each tank is used to obtain the tank temperature at the time of stopping and the next activation, and the pressure for each tank at the next activation is estimated from both tank temperatures. However, when the tank is mounted horizontally, the temperature difference caused by the tank mounting position relationship between the tanks in the vehicle longitudinal direction does not occur between the tanks when the vehicle is stopped. The level of the tank pressure cannot be determined based on the temperature. For this reason, when selecting a tank at the time of startup, a pressure sensor must be provided for each tank, and the pressure for each tank must be measured by the sensor. In this case, since the temperature sensor for each tank is indispensable for measuring the temperature rise during gas filling, a temperature sensor and a pressure sensor must be provided for each tank. For this reason, it has been requested to increase the degree of freedom for mounting the tank, or to increase the accuracy of determination of the pressure level for each tank at the time of startup without using the pressure sensor for each tank. There is also a demand for simple determination of pressure level and for not causing an increase in cost.

  In order to achieve at least a part of the above object, the present invention can be implemented as the following modes.

  (1) According to one form of this invention, the fuel gas supply apparatus which supplies fuel gas to gas consumption apparatus is provided. The fuel gas supply device includes a plurality of fuel gas tanks connected in parallel to the gas consuming device, and an open / close valve provided for each of the fuel gas tanks for releasing and shielding the gas in the tank to the gas consuming device. And before starting the start-up operation of the gas consuming device, pre-valve control for once opening the opening / closing valve for each of the plurality of fuel gas tanks is performed to release the gas in the tank from the plurality of fuel gas tanks. A pre-valve control unit for starting, and a start-up tank determining unit for determining a start-up supply tank for supplying fuel gas to the gas consuming device for the start-up operation from the plurality of fuel gas tanks based on the state of gas release And a gas supply path to the gas consuming device after executing the opening control of the open / close valve for the determined supply tank at startup The gas supply device controls and drives, and a start control section to start the starting operation of the gas consumers. The gas release of the gas in the tank from the plurality of fuel gas tanks accompanying the pre-valve control is almost unaffected by the location where the fuel gas tank is installed, and the effect of the tank pressure in the plurality of fuel gas tanks is reflected. For this reason, it is possible to determine the level of tank pressure in multiple fuel gas tanks with high accuracy due to gas discharge accompanying pre-valve control, and the selection of fuel gas tanks with low gas pressure is also affected by the location of the fuel gas tank. It will be possible. Moreover, since the gas discharge accompanying the pre-valve control is performed before the start-up operation of the gas consuming device through the drive control of the gas supply device in the gas flow path, this is performed for the start-up operation of the gas consuming device. It can be started by supplying gas from the start-up supply tank determined on the basis of the situation. As a result, according to the fuel gas supply apparatus of the above aspect of the present invention, the installation positions of the plurality of fuel gas tanks are not restricted in the longitudinal direction of the vehicle, for example, so that the degree of freedom of tank installation and tank mounting is increased. It becomes possible. In addition, since the opening / closing valve for each fuel gas tank is only opened once by the pre-valve control in a limited time before the start of the start-up operation of the gas consuming device, the start-up operation of the gas consuming device is performed in the gas flow path. When starting through the drive control of the supply device, it is possible to prevent any particular trouble.

  (2) In the fuel gas supply apparatus according to the above aspect, the start-up tank determination unit selects a low-pressure fuel gas tank among the plurality of fuel gas tanks based on the gas release state, and selects the selected fuel gas tank. The fuel gas tank may be determined as the start-up supply tank. If it carries out like this, a starting operation can be started by the fuel gas supply from the said tank through valve opening control of the opening / closing valve of a low gas pressure fuel gas tank. Therefore, according to the gas supply device of the above embodiment, since the gas supply from the fuel gas tank having a gas pressure higher than that of the low gas pressure fuel gas tank is not caused, the start-up operation is performed after increasing the degree of freedom of tank installation and tank mounting. It is possible to suppress the back flow of gas. In selecting a fuel gas tank having a low gas pressure, the fuel gas tank having the highest gas pressure can be excluded, and other fuel gas tanks can be selected, or a fuel gas tank having the lowest gas pressure can be selected.

  (3) In the fuel gas supply apparatus of the above aspect, each of the plurality of fuel gas tanks is provided with a temperature sensor that detects a temperature in the tank, and the start-up tank determination unit raises the temperature in the tank by the pre-valve control. The selected fuel gas tank is selected from the detected temperature of the temperature sensor, and the selected fuel gas tank is determined as the low-pressure fuel gas tank as the supply tank at the time of start-up. The increase in the temperature in the tank due to the pre-valve control is caused by the inflow of fuel gas into the tank caused by the gas release from the plurality of fuel gas tanks, that is, the fuel from the fuel gas tank having a high tank gas pressure to the fuel gas tank having a low tank gas pressure. It is accompanied by gas inflow and is not affected by the location of the fuel gas tank. The fuel gas tank that has risen in the temperature inside the tank becomes a low gas pressure fuel gas tank, so that the low gas pressure fuel gas tank can be more reliably used as a start-up supply tank, and the open / close valve of the tank can be opened. The start-up operation can be started by supplying the fuel gas after the control. Therefore, according to the gas supply apparatus of the above aspect, the gas supply from the fuel gas tank having a gas pressure higher than that of the fuel gas tank having a low gas pressure can be prevented more reliably during start-up operation. In addition to increasing the degree of freedom of mounting, it is possible to more reliably suppress the backflow of gas during start-up operation. In addition, when selecting a fuel gas tank with a low gas pressure, only the temperature sensor for each fuel gas tank is used, so the accuracy of judgment of the pressure level for each fuel gas tank can be increased without using the pressure sensor for each fuel gas tank. It becomes. In addition, since a pressure sensor for each fuel gas tank is not required, costs can be reduced.

  (4) In the fuel gas supply apparatus according to the above aspect, when the tank temperature rise exceeds a predetermined increase level, the start-up tank determination unit determines the fuel gas tank that has caused a temperature increase exceeding the increase level. When the start-up supply tank is determined and the increase in the tank internal temperature is within the range of the increase, all of the plurality of fuel gas tanks can be determined as the start-up supply tank. In this way, in addition to improving the degree of freedom of tank installation and tank mounting as described above, and improving the accuracy of determination of the pressure level for each fuel gas tank without using the pressure sensor for each fuel gas tank, there are the following advantages. In other words, the fuel gas tank in which the rise in the tank temperature exceeds a predetermined rise degree has a large drop in gas pressure compared to other fuel gas tanks. Therefore, by determining this fuel gas tank as the start-up supply tank, The gas supply from another fuel gas tank having a high gas pressure does not occur more reliably during the start-up operation, and the effectiveness of suppressing the backflow of gas during the start-up operation can be further enhanced. Further, if the difference in gas pressure between the fuel gas tanks accompanying the increase in the tank internal temperature is small, the start-up operation can be started from all the fuel gas tanks without any trouble while suppressing the backflow.

  (5) In the fuel gas supply apparatus according to the above aspect, the pre-valve control unit sequentially opens the open / close valves for the plurality of fuel gas tanks in order to release the gas from the plurality of fuel gas tanks. The start-up tank determination unit grasps the tank gas pressure for each fuel gas tank with a pressure sensor provided in the gas supply path, and selects a fuel gas tank with a low gas pressure within the grasped tank gas pressure. The start-up supply tank can be determined. In this way, when the tank gas pressure for each fuel gas tank is grasped and the fuel gas tank of low gas pressure is determined, only the pressure sensor provided in the gas supply path is used. It is possible to increase without using a pressure sensor for each fuel gas tank. In addition, since a pressure sensor for each fuel gas tank is not required, costs can be reduced. Further, the gas supply from the fuel gas tank having a high gas pressure does not occur more reliably during the start-up operation, and the effectiveness of suppressing the backflow of gas during the start-up operation can be further enhanced.

  (6) In the fuel gas supply apparatus according to the above aspect, the start-up tank determination unit may be configured such that the differential pressure difference between the tank gas pressures of the fuel gas tanks is within a predetermined pressure range. Can be determined as the supply tank at the start-up. In this way, the start-up operation can be started without any trouble from all the fuel gas tanks while suppressing the backflow.

  (7) In the fuel gas supply apparatus of any of the above forms, the gas consuming device can be a fuel cell. By so doing, the above-described effects can be achieved when starting the start-up operation of the fuel cell.

  (8) According to another aspect of the present invention, a vehicle equipped with a fuel cell is provided. This vehicle is equipped with the fuel gas supply device of any one of the above-described forms for supplying fuel gas to the fuel cell as a gas consuming device. Therefore, according to the vehicle of this embodiment, in addition to suppressing the backflow of gas in the start-up operation with an increased degree of freedom of tank mounting, it is possible to determine the accuracy of the pressure level for each fuel gas tank without using the pressure sensor for each fuel gas tank. The above effects such as improvement and cost reduction can be achieved. In addition, when the fuel cell mounted on the vehicle is activated, the vehicle is in a stopped state. Therefore, when various abnormal sounds are generated, this is detected as noise by the driver in the vehicle interior, which makes the driver feel uncomfortable. However, in the vehicle according to one aspect of the present invention, when the fuel cell is started when the vehicle is stopped, the gas flow caused by the backflow is also suppressed by suppressing the backflow of the gas, so that the quietness of the passenger compartment is improved. In addition, it can prevent the driver from feeling uncomfortable.

  The present invention can also be applied to a fuel gas supply method for supplying fuel gas to gas consuming equipment, a fuel cell system for generating power by supplying fuel gas from a plurality of fuel gas tanks to a fuel cell, or a power generation system.

1 is an explanatory diagram schematically showing a fuel cell system 10 as a first embodiment of the present invention. FIG. It is a flowchart which shows starting related control. It is explanatory drawing which shows schematic structure of test system TS which reproduced the pipe line structure and valve | bulb structure around the tank of FIG. It is a graph which shows the tank temperature transition and tank gas pressure transition which were measured in the test system. It is explanatory drawing which shows roughly 10 A of fuel cell systems as 2nd Embodiment. It is a flowchart which shows the starting relevant control in this 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view schematically showing a fuel cell system 10 as a first embodiment of the present invention.

  As shown in the figure, the fuel cell system 10 includes a fuel cell vehicle 20, a fuel cell 100, a hydrogen gas supply system 120, an air supply system 160 including a motor-driven compressor 150, a cooling system (not shown), And a control device 200. The fuel cell 100 is configured by laminating a power generation module having a membrane electrode assembly (MEA) (not shown) in which both electrodes of an anode and a cathode are joined to both sides of an electrolyte membrane, and includes a front wheel FW and a rear wheel RW. Is located under the vehicle floor. The fuel cell 100 generates an electric power by causing an electrochemical reaction between hydrogen in hydrogen gas supplied from a hydrogen gas supply system 120 and an air supply system 160 described later and oxygen in the air. A load such as a driving motor (not shown) for the front and rear wheels is driven.

  The hydrogen gas supply system 120 includes two hydrogen gas tanks 110f and a hydrogen gas tank 110r that store hydrogen gas as a fuel gas supplied to the fuel cell 100 at a high pressure, a fuel gas supply line 120F that reaches the fuel cell 100, and the flow In addition to a supply end manifold 121 at the end of the road, a hydrogen filling line 120R from the receptacle 122 to the filling side manifold 123, and a discharge line 124 for releasing unconsumed hydrogen gas (anode offgas) to the atmosphere, fuel gas The supply line 120F is provided with an injector 125 and a pressure reducing valve 126 from the fuel cell 100 side, and the discharge line 124 is provided with a discharge flow rate adjusting valve 127. The decompression valve 126 is driven under the control of the control device 200 described later, and causes the hydrogen gas after decompression to flow into the injector 125. The injector 125 is driven under the control of the control device 200 to be described later, adjusts the flow rate of hydrogen gas, and then jets and supplies hydrogen gas to the fuel cell 100.

  The hydrogen gas tank 110f and the hydrogen gas tank 110r are resin tanks having a fiber reinforced layer in which fibers containing a thermosetting resin are wound around the outer periphery of a resin liner. The hydrogen gas tank 110f and the hydrogen gas tank 110r are mounted on the fuel cell-equipped vehicle 20 before and after the vehicle in this order, and store hydrogen gas charged and supplied at a high pressure from a hydrogen gas station (not shown). Further, the hydrogen gas tank 110f and the hydrogen gas tank 110r are provided with tank caps 111f and 111r for each tank, respectively. Main valves 112f and 112r, opening and closing valves 113f and 113r, check valves 114f and 114r, Temperature sensors 115f and 115r for detecting the tank internal temperature are provided, and the above open / close valve and check valve are branched into the main valve.

  The main valves 112f and 112r are manually operated to the channel opening side before the vehicle is mounted, and maintain the channel opening. The on-off valves 113f and 113r are opened and closed under the control of the control device 200, which will be described later, and are connected to the supply-side manifold 121 through supply-side tank pipelines 116f and 116r. The check valves 114f and 114r are connected to the filling side manifold 123 at the filling side tank pipes 117f and 117r, and restrict gas passage only from the filling side manifold 123 side. With this pipe line configuration, the hydrogen gas tank 110f and the hydrogen gas tank 110r are connected to the fuel cell 100 via supply side tank lines 116f and 116r branched from the supply side manifold 121 of the fuel gas supply line 120F. 100 is connected in parallel. In this case, the tank lines on the supply side and the filling side are attached and detached on the supply side manifold 121, the filling side manifold 123 side, or the tank caps 111f and 111r side when the tank is replaced. The temperature sensors 115f and 115r are connected to a control device 200 (described later) via a signal line (not shown) when replacing the tank, and output the detected tank temperature to the control device 200 after the tank is mounted. Even in the open / close valves 113f and 113r, when the tank is replaced, it is connected to a control device 200 (described later) via a signal line (not shown), and is opened and closed under the control of the control device 200 after mounting the tank.

  The hydrogen gas supply system 120 having the above-described pipe configuration is configured to control the hydrogen gas from either the hydrogen gas tank 110f and the hydrogen gas tank 110r selected as a supply tank by the control device 200 described later, or from both hydrogen gas tanks. After the flow rate adjustment at the injector 125 and the pressure reduction (pressure adjustment) at the pressure reduction valve 126 performed under the control of 200, the discharge flow rate adjustment valve 127 of the discharge pipe 124 is supplied to the anode of the fuel cell 100. The anode off-gas is discharged into the atmosphere from a discharge pipe 162, which will be described later, at the flow rate adjusted in step (1). The injector 125 can adjust the gas flow rate from zero, and the fuel gas supply line 120F is blocked by setting the flow rate to zero. It should be noted that a flow rate adjusting valve can be provided upstream of the injector 125, and the injector 125 can be used for hydrogen gas supply.

  Moreover, the receptacle 122 in the hydrogen gas supply system 120 is located at a gas filling location corresponding to a fuel supply location on the side of the vehicle in an existing gasoline vehicle, and is covered with a vehicle exterior side cover. When filling hydrogen gas in a hydrogen gas station (not shown), the receptacle 122 is attached to the gas filling nozzle Gs of the station, and the hydrogen gas charged and supplied at high pressure is supplied to the filling side manifold 123 and the filling side tank piping 117f. 117r through the hydrogen gas tanks 110f and 110r. During such gas filling, the temperature sensors 115f and 115r for the hydrogen gas tanks 110f and 110r output the tank temperature to the controller 200 and the station controller, and are used to check the amount of filling gas and the filling pressure. It is essential.

  The air supply system 160 includes an oxygen supply pipe 161 that reaches the fuel cell 100 through the compressor 150, a discharge pipe 162 that discharges unconsumed air (cathode offgas) to the atmosphere, and a discharge flow rate adjustment valve 163 of the pipe. With. The air supply system 160 adjusts the flow rate of air taken from the open end of the oxygen supply line 161 by the compressor 150 and supplies the air to the cathode of the fuel cell 100, while discharging the flow rate adjustment valve 163 of the discharge line 162. The cathode off-gas is discharged to the atmosphere through the discharge pipe 162 at the flow rate adjusted in step (1).

  The control device 200 is constituted by a so-called microcomputer having a CPU, a ROM, a RAM and the like for executing a logical operation, and receives sensor inputs such as accelerators, sensor inputs accompanying gas filling, sensor inputs of temperature sensors 115f and 115r, and the like. Thus, it controls various controls of the fuel cell 100 including opening / closing control of the injector 125 and the various valves described above.

  Next, start-up related control performed in the fuel cell system 10 of the present embodiment will be described. FIG. 2 is a flowchart showing the activation-related control. In the following description, the hydrogen gas tank 110f and the hydrogen gas tank 110r will be appropriately referred to as tank 1 and tank 2 for convenience, and both tanks need to be distinguished from each other in the context of FIG. The tanks are described separately as a hydrogen gas tank 110f and a hydrogen gas tank 110r.

  The start-related control in FIG. 2 is executed by the control device 200 every time an ignition switch (not shown) in the fuel cell vehicle 20 is operated, and a series of pre-start processing (step S100) from step S105 to S180 is performed. Subsequent startup operation processing (step S200) is executed. First, the control device 200 determines the set state of the gas filling notification flag Fgj in the pre-start-up process in step S100 (step S105). The gas filling notification flag Fgj is set / reset in later-described steps S150 and 170 in the pre-startup process, and the set state is stored in the nonvolatile storage area of the control device 200.

  The gas filling notification flag Fgj is set in step S170 described later when one of the hydrogen gas tank 110f and the hydrogen gas tank 110r exceeds the predetermined range and has a low gas pressure. Further, the gas filling notification flag Fgj is accompanied by a notification that prompts the driver of the fuel cell vehicle 20 to fill the tank with hydrogen gas. This gas filling notification can be performed by turning on or blinking the remaining fuel amount notification lamp on the instrument panel of the fuel cell-equipped vehicle 20, and a voice notification that prompts gas filling promptly due to the difference in tank gas pressure. It can also be. Upon receiving such notification, after the activation-related control, when the gas filling is performed via the receptacle 122 (see FIG. 1) at the hydrogen gas station, the control device 200 causes the tank gas of the hydrogen gas tank 110f and the hydrogen gas tank 110r to be filled. Assuming that the pressure level has been corrected and the tank gas pressures in both tanks have become substantially equal, reset the gas filling notification flag Fgj by giving a value of 0. As a result, in at least the first main activation-related control after gas filling, a negative determination is made in step S105, and the process proceeds to step S110 and subsequent steps involving determination of the level of tank gas pressure. On the other hand, if gas filling is not performed, the gas filling notification flag Fgj remains in the set state with a value of 1. Therefore, in the start-up related control after the next without gas filling, an affirmative determination is made in step S105. Then, the process proceeds to step S180, which will be described later, in which a limit is imposed on the tank used for the startup operation process. Note that such processing after gas filling will be described later together with the description of the corresponding steps.

  Following the negative determination in step S105, the control device 200 once opens (pre-valve control) the open / close valves 113f and 113r for the hydrogen gas tank 110f and the hydrogen gas tank 110r, that is, both the tank 1 and the tank 2 (step pre-valve control). S110). In this case, since the injector 125 in front of the fuel cell 100 is not driven, the fuel gas supply line 120F is closed by the injector 125. Due to such pipe line conditions and the above-described opening / closing control of the opening / closing valve, the hydrogen gas in the tank is released from the tanks 1 and 2 to the supply-side manifold 121 side based on the tank gas pressure. The control device 200 reads the sensor signals of the temperature sensors 115f and 115r continuously in time series in both the tank 1 and the tank 2 (step S120), and in the tank for the tank 1 based on the sensor signal of each sensor. The temperature transition of the temperature T1 and the temperature T2 in the tank 2 is grasped (steps S130 to S140).

  Next, the control device 200 determines whether or not a temperature increase transition has occurred in either the tank internal temperature T1 or the tank internal temperature T2, and whether or not the temperature increase transition range (degree of increase) is 1 ° C. or higher. Is determined (step S145). Assuming that there is a difference in tank gas pressure between tank 1 and tank 2, the opening / closing valve opening control for both tanks in step S110 causes the gas in the tank (hydrogen Gas) flows into the low gas pressure tank through the supply side manifold 121 and the supply side tank lines 116f and 116r. In the tank that has received the gas inflow in this way, the temperature in the tank rises with the gas inflow at a pressure higher than its own tank gas pressure, and the temperature rise depends on the magnitude of the differential pressure of the tank gas pressure. . That is, if there is no difference in tank gas pressure between both tanks 1 and 2, or if the pressure difference is small, the increase in the tank internal temperature accompanying the inflow of gas higher than itself, that is, the tank internal temperature T1 The rise in temperature does not occur at any of the tank internal temperatures T2, or the degree thereof is small, and the temperature rise transition (rise degree) is lower than 1 ° C. Therefore, if there is no difference in level between the tank gas pressures of both tanks or the difference pressure is small, the control device 200 makes a negative determination in step S145. On the other hand, when the pressure difference between the tank gas pressures of the tank 1 and the tank 2 is large, the tank temperature (the temperature in either the tank temperature T1 or the tank temperature T2) for the low gas pressure tank greatly increases. Since the temperature rise transition amount (degree of increase) is 1 ° C. or more in a predetermined elapsed time, the control device 200 makes an affirmative determination in step S145. In the present embodiment, in consideration of the tank capacities of the hydrogen gas tank 110f and the hydrogen gas tank 110r shown in FIG. 1, the steady filling pressure, and the like, if a differential pressure of 5 MPa or more is generated in both tanks, the temperature inside the tank increases as described above. Since the transition occurs, an affirmative determination is made in step S145. The elapsed time when determining the temperature rise transition allowance will be described later.

  Here, the tank temperature transition accompanying the above-mentioned differential pressure of the tank gas pressure will be described using the verification results. FIG. 3 is an explanatory diagram showing a schematic configuration of the test system TS that reproduces the pipe configuration and valve configuration around the tank in FIG. 1, and FIG. 4 is a graph showing the tank temperature transition and the tank gas pressure transition measured in the test system. is there.

  The test system TS shown in FIG. 3 includes a supply destination equipment Me that replaces the fuel cell 100 of FIG. 1 in the fuel gas supply pipe 120F, and a closed equipment Ms that replaces the receptacle 122 in the hydrogen filling pipe 120R. The supply destination equipment Me receives the hydrogen gas ejected from the injector 125 equivalently to the fuel cell 100. The block facility equipment Ms closes the hydrogen-filled pipeline 120R in the test state so as to be equivalent to the receptacle 122 that blocks the pipeline other than during gas filling. In addition, the test system TS uses a supply gas pressure sensor 121P for detecting the gas pressure in the fuel gas supply line 120F and tank gas pressure sensors Spl and Sph that are not used in the fuel cell vehicle 20 when gas is released. In order to measure the tank gas pressure, a high pressure adjustment tank HPT (21 MPa) and a low pressure adjustment tank LPT (1 MPa), which have been adjusted in advance, are attached to the tank caps 111f and 111r. Alternatively, the high-pressure adjustment tank HPT and the low-pressure adjustment tank LPT with the attached tank caps are connected to the supply-side manifold 121 and the filling-side manifold 123 through supply-side tank lines 116f and 116r and filling-side tank pipes 117f and 117r. .

  For the test system TS described above, step S110 of the activation-related control shown in FIG. 2 is executed, and in subsequent steps S120 to S140, the tank internal temperature and the tank gas pressure for the high pressure adjustment tank HPT and the low pressure adjustment tank LPT. Was measured over time with the temperature sensors 115f and 115r and the tank gas pressure sensors Spl and Sph, and the graph of FIG. 4 was obtained. As described above, since the tank gas pressure has a differential pressure of 20 (= 21-1) MPa between the high pressure adjustment tank HPT and the low pressure adjustment tank LPT, the high pressure adjustment is performed by the valve control in step S110. The gas released from the tank HPT flows into the low pressure adjustment tank LPT. On the basis of such a gas release situation, in the low pressure adjusting tank LPT, as shown in FIG. 4, the temperature in the tank rises and rises by about 4 ° C. after 1 second from the execution timing of step S110. In the present embodiment, the elapsed time for determining the temperature rise transition in step S145 described above is set to 1 second from the behavior of the temperature rise transition in the low-pressure adjustment tank LPT. In the high-pressure adjustment tank HPT, the temperature in the tank decreases, but the decrease is not as significant as in the low-pressure adjustment tank LPT. Of course, the gas pressure in the tank rises in the low pressure adjustment tank LPT, falls in the high pressure adjustment tank HPT, and the supply gas pressure in the fuel gas supply line 120F rises rapidly from the execution timing of step S110, Then converge.

  Returning to FIG. 2, the activation-related control will be described. If the control device 200 makes a negative determination in step S145, it is assumed that there is no difference in the tank gas pressure between the tanks 1 and 2 (FIG. 1: hydrogen gas tanks 110f and 110r), or that the differential pressure is small. Then, the gas filling notification flag Fgj is reset by giving a value 0 (step S150). Next, the control device 200 continues to open the on-off valves 113f and 113r for both the tank 1 and the tank 2 (step S160), exits the pre-start process of step S100, and starts the start operation process of step S200. Transition. That is, in step S160, all of the hydrogen gas tank 110f and the hydrogen gas tank 110r, that is, the fuel cell system 10 includes all the tanks that supply the hydrogen gas to the fuel cell 100 in executing the startup operation process in the subsequent step S200. Will be determined as the tank. In step S200, the control device 200 supplies the fuel cell 100 with hydrogen gas supplied from both the hydrogen gas tank 110f and the hydrogen gas tank 110r that have no difference in level or low pressure in the tank gas pressure. Therefore, the fuel cell 100 is started up by controlling the injector 125 and the compressor 150 of the air supply system 160. After starting the start-up operation in step S200, the control device 200 detects the accelerator operation or gear shift of the vehicle driver, and executes load response control following the start-up operation.

  On the other hand, if the control device 200 makes an affirmative determination in step S145, it is determined that the tank gas pressure differential pressure is large in both the tank 1 and the tank 2 (FIG. 1: hydrogen gas tanks 110f and 110r). A value 1 is given to Fgj and set (step S170). Upon receipt of the gas filling notification flag Fgj, the control device 200 turns on or blinks the remaining fuel amount notification lamp on the instrument panel of the fuel cell vehicle 20 or changes the tank gas pressure quickly. A notification of prompting the driver of the fuel cell-equipped vehicle 20 to fill the tank with hydrogen gas is given by a voice or the like that prompts filling.

  Next, the control device 200 controls the on-off valve 113f to close only the tank in which the temperature in the tank has decreased, for example, the hydrogen gas tank 110f, of both the tank 1 and the tank 2 (step S180), and the step The pre-start process of S100 is exited, and the process proceeds to the start operation process of step S200. That is, in step S180, for the hydrogen gas tank 110f on the side where the tank internal temperature has decreased, the on-off valve 113f is closed to control the low gas pressure hydrogen gas tank 110r that has increased without decreasing the internal tank temperature. Since the opening / closing valve 113r of the tank is continuously opened, the tank that supplies the hydrogen gas to the fuel cell 100 in performing the start-up operation process in the subsequent step S200 is set to a low gas pressure in which the tank temperature has increased. The hydrogen gas tank 110r is determined. In step S200, the control device 200 drives and controls the injector 125, the compressor 150 of the air supply system 160, and the like to supply the fuel cell 100 with the hydrogen gas supplied from the low gas pressure hydrogen gas tank 110r. The fuel cell 100 is activated. After starting the start-up operation in step S200, the control device 200 detects the accelerator operation or gear shift of the vehicle driver, and executes load response control following the start-up operation. In the load corresponding control based on the accelerator operation or the like, the hydrogen gas supplied from the low gas pressure hydrogen gas tank 110r may not be sufficient. Therefore, in the load corresponding control, the hydrogen gas tank 110f having a high gas pressure that was not used for gas supply in the startup operation process is also used for gas supply. In the load control, since the fuel cell-equipped vehicle 20 is running, even if a reverse gas flow occurs between the tanks due to the combined use of the hydrogen gas tank 110f with a high gas pressure, the abnormal noise associated with this is recognized by the driver. It is hard to be done.

  As described above, in the fuel cell system 10 of the present embodiment, prior to the start-up operation process (step S200) that involves driving the injector 125, the open / close valves 113f and 113r for both the hydrogen gas tank 110f and the hydrogen gas tank 110r are provided. Is once opened (pre-valve control: step S110), and the transition of the tank internal temperatures T1 and T2 of the two tanks accompanying the pre-valve control is grasped (steps S120 to 140). Then, if a temperature increase transition occurs in either the tank internal temperature T1 or the tank internal temperature T2, and the temperature increase transition allowance (degree of increase) is 1 ° C. or more (step S145: affirmative determination), such a temperature increase transition For example, the hydrogen gas tank 110r having the low gas pressure is determined as a tank that supplies hydrogen gas to the fuel cell 100 in performing the start-up operation process (step S180).

  The increase in the temperature in the tank when making such a tank determination is accompanied by the gas release from the hydrogen gas tank 110f having a high tank gas pressure and the gas flowing into the hydrogen gas tank 110r having a low tank gas pressure. This is not affected by the location of the gas tanks, specifically the position in the vehicle longitudinal direction. That is, in the fuel cell-equipped vehicle 20 of the present embodiment, the tank is mounted in the vehicle front-rear direction as shown in the schematic configuration of FIG. 1, but even if the tank is mounted in the vehicle width direction, the high tank gas pressure Gas discharge from the hydrogen gas tank 110f and inflow of the gas into the hydrogen gas tank 110r having a low tank gas pressure occur, and accordingly, the temperature in the tank increases in the hydrogen gas tank 110r having a low tank gas pressure. For this reason, according to the fuel cell system 10 of the present embodiment, and hence the fuel cell-equipped vehicle 20, the hydrogen gas tank 110r having a low gas pressure that has caused an increase in the temperature in the tank can be reliably installed. It can be selected as a tank for startup operation processing without being affected by the location.

  In addition, since the start-up operation process (step S200) can be started by supplying hydrogen gas through the valve opening continuation control (step S180) of the open / close valve 113r of the low gas pressure hydrogen gas tank 110r, a high gas pressure fuel gas tank (for example, The hydrogen gas supply from the hydrogen gas tank 110f) can be reliably prevented from occurring during the startup operation process. As a result, according to the fuel cell system 10 of the present embodiment, and hence the fuel cell vehicle 20, the backflow of gas in the start-up operation can be more reliably suppressed while increasing the degree of freedom of tank mounting. In addition, when selecting a low gas pressure hydrogen gas tank from the hydrogen gas tank 110f and the hydrogen gas tank 110r, only the temperature sensors 115f and 115r for each hydrogen gas tank are used. Therefore, according to the fuel cell system 10 of this embodiment, and thus the fuel cell-equipped vehicle 20, the determination accuracy of the pressure level for each hydrogen gas tank can be increased without using a pressure sensor for each tank, and the tank It is also possible to reduce the cost due to the omission of the pressure sensor.

  Further, in the fuel cell system 10 of the present embodiment, when selecting a low gas pressure tank, since a temperature rise transition within a predetermined time (for example, 1 second) is also taken into consideration (step S145), the low gas pressure tank Are more reliably selected from the hydrogen gas tank 110f and the hydrogen gas tank 110r. For this reason, according to the fuel cell system 10 of the present embodiment, and hence the fuel cell-equipped vehicle 20, the selected low gas pressure hydrogen gas tank is used for the start-up operation process (step S200). Since the gas supply from the other hydrogen gas tank with a high gas pressure is not performed more reliably, the effectiveness of suppressing the backflow of gas in the start-up operation can be further increased.

  In the fuel cell system 10 of the present embodiment, even if the temperature in the tank rises, if the allowance is small (step S145: negative determination), the difference in tank gas pressure is assumed to be small, and the hydrogen gas tank 110f and the hydrogen gas tank Both tanks of 110r are used for the start-up operation process (step S200). Therefore, according to the fuel cell system 10 of the present embodiment, and thus the fuel cell-equipped vehicle 20, the start-up operation process (step S200) is hindered by supplying the hydrogen gas from all the hydrogen gas tanks while suppressing the backflow. You can start without.

  Further, in the fuel cell system 10 of the present embodiment, when selecting a tank to be used for the start-up operation process (step S200), the temperature rise transition allowance in step S145 is only considered in a short time of 1 second. Therefore, the subsequent start-up driving process (step S200) can be performed quickly, and the driver of the fuel cell vehicle 20 can be prevented from feeling uncomfortable. In addition to this, the fuel cell-equipped vehicle 20 of the present embodiment has the following advantages. The pre-startup process in step S100 and the start-up operation process in step S200 are performed when the fuel cell vehicle 20 is stopped. However, since the gas flow noise accompanying the gas backflow can be suppressed by the gas backflow suppression described above in the pre-startup process prior to the start-up operation process, according to the fuel cell-equipped vehicle 20 of the present embodiment, the quietness of the passenger compartment. In addition, the driver can be prevented from feeling uncomfortable.

  Here, the relationship between the load handling control following the start-up operation, the gas filling after receiving the above-described gas filling notification, and step S105 in the pre-start-up process of FIG. 2 will be described. Normally, when a vehicle driver receives a gas filling notification, the vehicle driver fills the gas at a hydrogen gas station at an early stage. However, depending on the vehicle travel region and travel conditions, after the above notification, the vehicle may be stopped and then started before gas filling. In this case, the gas filling notification flag Fgj has already been set in step S170 in the start-related control in FIG. 2 before the vehicle stops. Therefore, at the time of start-up after stopping the vehicle before execution of gas filling, an affirmative determination is made in step S105 in FIG. 2 and the process proceeds to step S180, where hydrogen gas from the low gas pressure hydrogen gas tank 110r is used in step S200. The start-up operation process is made without any trouble.

  By the way, if the load correspondence control is continued without gas filling after the above notification and the vehicle travel distance is extended, even if the hydrogen gas tank 110f with a high gas pressure is used in combination with this load correspondence control, the gas consumption increases. The remaining gas amount in the low gas pressure hydrogen gas tank 110r may be close to zero. In addition, if the vehicle is stopped and then started before gas filling, the low-gas remaining hydrogen gas tank 110r may be used for the startup operation processing in step S200 as described above. I can get up. To avoid this situation, you can do the following. First, in step S170 in the start-related control of FIG. 2, the vehicle travel distance based on the load corresponding control is set to a predetermined travel distance (for example, about 50 km) with the gas filling notification flag Fgj already set in step S170. If exceeded, the gas filling notification flag Fgj is also reset in the load corresponding control. In addition, if the vehicle is stopped and then started before gas filling, following the negative determination in step S105 of FIG. 2, the vehicle travels based on load corresponding control without gas filling. If it is determined whether or not the distance has exceeded a predetermined travel distance (for example, about 50 km) and an affirmative determination is made, the hydrogen gas tank 110f having a high gas pressure is used for the start-up operation process in step S200 as an emergency evacuation. In this way, the hydrogen gas tank 110f having a high gas pressure can be used for the start-up operation process instead of the hydrogen gas tank 110r having a low gas remaining amount due to vehicle travel before gas filling.

  Further, when the gas filling is performed after receiving the above gas filling notice, the gas filling notice flag Fgj is reset with the gas filling as described above. Then, after gas filling, the hydrogen gas tank 110f and the hydrogen gas tank 110r are in a state of substantially the same tank gas pressure. Therefore, in the start-up related control shown in FIG. 2 after the gas filling, the gas supply shifted to step S160 can be performed following the negative determination in step S105. By carrying out like this, step S110-145 can be skipped in the first starting related control after gas filling. In this case, in addition to the first start-up related control after gas filling, the start-up related control in the range where the vehicle travel after gas filling does not cause much difference in the tank gas pressure in the two tanks also applies to the first start-up related control after gas filling. Similar to the activation-related control, following the negative determination in step S105, the process may move to step S160 and skip steps S110 to 145.

  Next, another embodiment will be described. FIG. 5 is an explanatory diagram schematically showing a fuel cell system 10A as the second embodiment, and FIG. 6 is a flowchart showing start-up related control in the second embodiment.

  The fuel cell system 10A shown in FIG. 5 is different in device configuration only in that it includes a supply gas pressure sensor 130 for detecting gas pressure in the fuel gas supply line 120F. The start-up related control of the fuel cell system 10A is the same as shown in FIG. 6 in that a series of pre-start processing (step S100) and subsequent start operation processing (step S200) are executed. 200 first determines the set state of the gas filling notification flag Fgj in the pre-start-up process in step S100 (step S105). Here, if a positive determination is made, the process proceeds to step S410 described later.

  If the control device 200 makes a negative determination in step S105, as described above, the open / close valve 113f of the tank 1 (for example, the hydrogen gas tank 110f) is controlled to open (step S300) under the non-drive state of the injector 125 (step S300). The hydrogen gas in the tank is released from the gas tank 110f to the supply side manifold 121 side based on the tank gas pressure. The control device 200 calculates the supply gas pressure of the fuel gas supply line 120F accompanying this gas release, that is, the tank gas pressure P1 of the hydrogen gas tank 110f based on the sensor signal of the supply gas pressure sensor 130 (step S310). Next, the control device 200 controls to close the open / close valve 113f of the hydrogen gas tank 110f (step S320), and then temporarily ejects the injector 125 (step S330). As a result, the hydrogen gas released from the hydrogen gas tank 110f is supplied to the fuel cell 100 without flowing into the hydrogen gas tank 110r, and hardly remains in the fuel gas supply line 120F. In addition, since the opening time of the on-off valve 113f from step S310 to step S320 is a short time required to fill the fuel gas supply line 120F with hydrogen gas, it is ejected from the injector 125 to the fuel cell 100 in step S330. The amount of hydrogen gas is only a small amount, and does not affect the operation of the fuel cell 100, specifically, the subsequent startup operation processing in step S200.

  Next, the control device 200 controls the opening / closing of the on-off valve 113r for the tank 2 (hydrogen gas tank 110r) (step S340), and calculates the tank gas pressure P2 of the hydrogen gas tank 110r based on the sensor signal from the supply gas pressure sensor 130 ( Step S350) and valve closing control of the opening / closing valve 113r (Step S360) are sequentially performed. Following such tank gas pressure calculation, control device 200 compares the absolute value of the difference between tank gas pressure P1 and tank gas pressure P2 with a predetermined constant A (step S370). This step S370 is technically equivalent to step S145 of the above-described embodiment, and the control device 200 determines whether the tank gas pressures in the hydrogen gas tank 110f and the hydrogen gas tank 110r are large or small in step S370. In other words, in this embodiment, the open / close valves 113f and 113r for the both hydrogen gas tanks are once opened in order to release the gas from the hydrogen gas tanks in sequence, and then the tanks for the respective tanks. The gas pressure is calculated and compared by the supply gas pressure sensor 130 (steps S300 to S370). The constant A in the present embodiment is defined to be about 5 MPa as in the above-described embodiment.

  If the control device 200 makes an affirmative determination in step S370, it is assumed that there is no difference in tank gas pressure between the tanks 1 and 2 (FIG. 1: hydrogen gas tanks 110f and 110r), or that the differential pressure is small. Then, the gas filling notification flag Fgj is reset by giving a value 0 (step S380). Next, the control device 200 opens the opening / closing valves 113f and 113r for both the tank 1 and the tank 2 again and continues to open them (step S390), and exits the pre-start-up process of step S100. The process proceeds to the startup operation process of S200. That is, in step S390, both the hydrogen gas tank 110f and the hydrogen gas tank 110r, that is, the fuel cell system 10 are all equipped with tanks for supplying hydrogen gas to the fuel cell 100 for executing the startup operation processing in the subsequent step S200. Will be determined as the tank. In step S200, the control device 200 supplies the fuel cell 100 with hydrogen gas supplied from both the hydrogen gas tank 110f and the hydrogen gas tank 110r that have no difference in level or low pressure in the tank gas pressure. Therefore, the fuel cell 100 is started up by controlling the injector 125 and the compressor 150 of the air supply system 160. After starting the start-up operation in step S200, the control device 200 detects the accelerator operation or gear shift of the vehicle driver, and executes load response control following the start-up operation.

  On the other hand, if the control device 200 makes a negative determination in step S370, it is determined that the tank gas pressure differential pressure is large in both tanks 1 and 2 (FIG. 1: hydrogen gas tanks 110f and 110r), and the gas filling notification flag is set. A value 1 is given to Fgj and set (step S400). The control device 200 receives the set of the gas filling notification flag Fgj, and notifies the driver of the fuel cell vehicle 20 to urge the tank to fill the tank with hydrogen gas as described above.

  Next, the control device 200 opens the opening / closing valve 113f for only the low gas pressure side tank, for example, the hydrogen gas tank 110f, of both the tank 1 and the tank 2, and continues the opening ( Step S410), the pre-start process of step S100 is exited, and the process proceeds to the start operation process of step S200. That is, in step S410, the hydrogen gas tank 110f that has been selected in step S370 as the low gas pressure is determined to be a tank that supplies hydrogen gas to the fuel cell 100 in executing the startup operation process in step S200. Become. In step S200, the control device 200 drives and controls the injector 125, the compressor 150 of the air supply system 160, and the like to supply the fuel cell 100 with hydrogen gas supplied from the low gas pressure hydrogen gas tank 110f. The fuel cell 100 is activated. After starting the start-up operation in step S200, the control device 200 detects the accelerator operation or gear shift of the vehicle driver, and executes load response control following the start-up operation.

  As described above, in the fuel cell system 10A of the present embodiment, the open / close valve 113f for each of the hydrogen gas tanks 110f and 110r in the pre-start-up process prior to the start-up operation process (step S200) involving driving of the injector 125 is performed. , 113r are sequentially opened once to sequentially release the gas from the respective hydrogen gas tanks, and then the low gas pressure is calculated by the tank gas pressure calculated by the supply gas pressure sensor 130 for each tank. The hydrogen gas tank (for example, the hydrogen gas tank 110f) is determined as a tank that supplies hydrogen gas to the fuel cell 100 in performing the startup operation process. Therefore, according to the fuel cell system 10A of the present embodiment, and hence the fuel cell-equipped vehicle 20, the supply provided in the fuel gas supply line 120F when calculating the tank gas pressure for each tank or determining the tank with a low gas pressure. Since only the gas pressure sensor 130 is used, the determination accuracy of the pressure level for each of the hydrogen gas tanks 110f and 110r can be increased without using the pressure sensor for each tank, and the pressure sensor for each tank can be improved. Cost reduction associated with omission can also be achieved. Further, the gas supply from the hydrogen gas tank having a high gas pressure is prevented from occurring more reliably, and the back flow of the gas in the start-up operation can be suppressed with high effectiveness.

  In the fuel cell system 10A of the present embodiment, if the tank gas pressures of both the hydrogen gas tanks 110f and 110r are within a predetermined pressure range (step S370: affirmative determination), the difference in tank gas pressure is small. As described above, both the hydrogen gas tank 110f and the hydrogen gas tank 110r are used for the start-up operation process (step S200). Therefore, the fuel cell system 10A of the present embodiment, and hence the fuel cell vehicle 20 can suppress the backflow and supply the hydrogen gas from all the hydrogen gas tanks, so that the start-up operation process (step S200) is not hindered. You can start.

  The present invention is not limited to the above-described embodiment, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features of the embodiments corresponding to the technical features in each embodiment described in the summary section of the invention are intended to solve part or all of the above-described problems, or part of the above-described effects. Or, in order to achieve the whole, it is possible to replace or combine as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  In the above embodiment, two hydrogen gas tanks are mounted in the vehicle front-rear direction, but these tanks can also be mounted in the vehicle width direction. In addition to this, it is possible to adopt a form in which three or more hydrogen gas tanks are mounted.

  In addition, the fuel cell system 10 that supplies hydrogen gas to the fuel cell 100 has been described. However, a gas supply device or supply system that supplies natural gas to an internal combustion engine driven by the combustion energy of natural gas, or a so-called natural gas supply system. It can also be applied to gas vehicles. Further, the present invention can also be applied as a power generation system in which the fuel cell 100 is placed in the facility to generate power.

DESCRIPTION OF SYMBOLS 10 ... Fuel cell system 10A ... Fuel cell system 20 ... Fuel cell mounted vehicle 100 ... Fuel cell 110f, 110r ... Hydrogen gas tank 111f, 111r ... Tank cap 112f, 112r ... Main valve 113f, 113r ... Open / close valve 114f, 114r ... Check Valves 115f, 115r ... Temperature sensors 116f, 116r ... Supply side tank lines 117f, 117r ... Filling side tank lines 120 ... Hydrogen gas supply system 120F ... Fuel gas supply lines 120R ... Hydrogen filling lines 121 ... Supply side manifolds 121P ... Supply gas pressure sensor 122 ... Receptacle 123 ... Filling side manifold 124 ... Discharge pipe 125 ... Injector 126 ... Pressure reducing valve 127 ... Discharge flow rate adjustment valve 130 ... Supply gas pressure sensor 150 ... Compressor 160 ... Air Supply system 161 ... Oxygen supply line 162 ... Release line 163 ... Discharge flow rate adjustment valve 200 ... Control device TS ... Test system RW ... Rear wheel Me ... Destination equipment Ms ... Blocking equipment Gs ... Gas filling nozzle HPT ... High pressure Adjustment tank LPT ... Low pressure adjustment tank Sph, Spl ... Tank gas pressure sensor

Claims (8)

A fuel gas supply device for supplying fuel gas to a gas consuming device,
A plurality of fuel gas tanks connected in parallel to the gas consuming device;
An open / close valve provided for each fuel gas tank to release and shield the gas in the tank to the gas consuming device;
A pre-valve for releasing the gas in the tank from the plurality of fuel gas tanks by performing pre-valve control for once opening the opening / closing valve for each of the plurality of fuel gas tanks before starting the starting operation of the gas consuming device. A control unit;
A start-up tank determination unit that determines a start-up supply tank that supplies fuel gas to the gas consuming device in order to perform the start-up operation from the plurality of fuel gas tanks based on the state of gas release;
After performing the opening control of the opening / closing valve for the determined supply tank at the time of starting, the gas supply device of the gas supply path to the gas consumption device is driven and controlled, and the gas consumption device is started up. A fuel gas supply device comprising a start control unit for starting the operation.   The startup tank determination unit selects a low gas pressure fuel gas tank among the plurality of fuel gas tanks based on the gas release state, and determines the selected fuel gas tank as the startup supply tank. Item 4. The fuel gas supply device according to Item 1. The fuel gas supply device according to claim 1 or 2, wherein
For each of the plurality of fuel gas tanks, a temperature sensor for detecting the temperature in the tank is provided,
The startup tank determination unit
A fuel gas tank that has risen in tank temperature due to the pre-valve control is selected from the temperature detected by the temperature sensor, and the selected fuel gas tank is determined as the low-gas pressure fuel gas tank as the start-up supply tank. apparatus.   When the increase in the tank temperature exceeds a predetermined increase, the start-up tank determination unit determines a fuel gas tank that has caused a temperature increase exceeding the increase as the start-up supply tank, and determines the temperature in the tank 4. The fuel gas supply device according to claim 3, wherein when the increase of the fuel gas is within the range of the increase, the plurality of fuel gas tanks are all determined as the start-up supply tanks. The fuel gas supply device according to claim 2,
The pre-valve control unit sequentially executes the gas discharge from the plurality of fuel gas tanks by sequentially opening the opening and closing valves for each of the plurality of fuel gas tanks.
The start-up tank determination unit grasps a tank gas pressure for each fuel gas tank by a pressure sensor provided in the gas supply path, and supplies a fuel gas tank having a low gas pressure within the grasped tank gas pressure at the start-up time. Fuel gas supply device to be decided on the tank.   The start-up tank determination unit determines all of the plurality of fuel gas tanks as the start-up supply tank if a differential pressure of the tank gas pressure for each of the grasped fuel gas tanks is within a predetermined pressure range. 5. The fuel gas supply device according to 5.   The fuel gas supply device according to any one of claims 1 to 6, wherein the gas consuming device is a fuel cell. A vehicle equipped with a fuel cell,
A vehicle equipped with the fuel gas supply device according to any one of claims 1 to 7, wherein fuel gas is supplied to the fuel cell as a gas consuming device.

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