JP6017986B2 - Tank assembly and fuel cell system - Google Patents

Description

  The present invention relates to a tank assembly and a fuel cell system.

  The tank assembly is incorporated in various systems in order to supply gas to gas consuming equipment. For example, in a fuel cell system having a fuel cell that generates electricity using an electrochemical reaction between hydrogen and oxygen, a tank assembly includes hydrogen gas filling from a so-called hydrogen station to the tank, and hydrogen gas supply from the tank to the fuel cell. (For example, Patent Document 1). It has been proposed to use a tank assembly not only in a fuel cell system but also in a system in which a tank has a gas purification function (for example, Patent Document 2). In addition, a valve mechanism that makes it difficult for moisture in the gas to flow downstream in the gas passage is proposed (for example, Patent Document 3).

JP 2009-168166 A JP 2007-54821 A JP 2009-264442 A

  In the valve mechanism attached to the base of the high-pressure gas tank, when the gas inflow passage to the tank and the gas discharge passage from the tank are separated, the outer portion of the valve mechanism becomes larger by the increase of the gas passage. For this reason, for example, in a vehicle equipped with a fuel cell system, the weight is increased, and downsizing, weight reduction, and cost reduction may be hindered. On the other hand, if the gas inflow and the gas exhaust are covered with one flow path as in Patent Document 1, the following problems have been pointed out, although the cost can be reduced and the size can be reduced. When filling a tank with gas, the filling gas naturally enters the tank, but the water contained in the filling gas is caused to flow into the gas stream for reasons such as high filling pressure and high flow rate. , It is possible to enter into a valve such as a regulator or an on-off valve downstream of the flow path. When this happens, moisture freezes in the valve in a low temperature environment, and the reliability of the valve drive decreases. In order to avoid such a situation, it is beneficial to incorporate the valve mechanism proposed in Patent Document 3 into the flow path on the gas filling side. What is the valve mechanism responsible for gas filling to the tank and gas supply from the tank? Since a separate valve mechanism is required, it is contrary to downsizing, weight reduction, and cost reduction, and is not a realistic solution. For these reasons, it has been requested to take effective measures against freezing of moisture contained in the gas. In addition, it is also demanded that the tank assembly be made compact, lightweight, and cost-effective.

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

  (1) According to one aspect of the present invention, a tank assembly is provided. The tank assembly includes a tank that stores gas supplied from a gas supply source, supplies the stored gas to a gas consuming device, and a valve mechanism that is attached to a base of the tank. Connected to a gas pipe connected to the gas consuming equipment, connected to a gas pipe from the gas supply source, a first flow path having a gas consuming equipment side opening / closing valve that opens and closes the flow path on the gas consuming equipment side. A second flow path having a check valve that allows only a gas flow from the gas supply source, and a connection portion between the second flow path and the first flow path, and reaches the inside of the tank. The third flow path is provided at the connection location, and the gas supplied from the gas supply source and passed through the second flow path collides to change the flow of the gas to the third flow path side. The gas flow is converted into the third flow. It induces a and a gas guiding member. In the tank assembly of the above aspect, the gas supplied from the gas supply source and passing through the second flow path collides with the gas guiding member provided at the connection point between the second flow path and the first flow path and flows therethrough. Is converted to the third flow path side. Therefore, even if moisture is contained in the gas from the gas supply source, the moisture is guided to the third flow path side together with the converted gas by the gas flow conversion by the gas guiding member. It is difficult to reach the first flow path on the downstream side of the location and the opening / closing valve of the flow path. For this reason, according to the tank assembly of the said form, the freezing of the water | moisture content in the valve in the on-off valve of a 1st flow path can be suppressed. Further, in the tank assembly of the above aspect, the third flow path can be a gas flow path (hereinafter referred to as a filling flow path for convenience) supplied from a gas supply source and passed through the second flow path, Since it can be a passage passage (hereinafter referred to as a discharge supply passage for convenience) from the end of the third passage to the first passage of the gas in the tank, the passage is not increased. From this point, according to the tank assembly of the above embodiment, it is not necessary to increase the outer size of the valve mechanism, so that it is possible to reduce the size, weight, and cost.

  (2) In the tank assembly of the above-described form, the third flow path can be provided with a third flow path opening / closing valve for opening and closing the flow path. In this way, the first flow path having the gas consuming equipment side opening / closing valve and the second flow path having the check valve can be inspected as a single flow path system connected at the connection location, which is convenient.

  (3) In the tank assembly of the above-described form, the gas guiding member includes a tip portion that opens and closes the flow channel opening of the third flow channel at a connection location, and the tip portion serves as the third flow channel on-off valve. When the gas flows from the gas supply source into the second flow path when the tip is at the valve opening position where the flow path opening is opened, the flow of the flowed-in gas is It can be changed to the side of the three flow paths. By doing so, the opening / closing function of the third flow path as the third flow path opening / closing valve is achieved by the tip portion of the gas guiding member, which is more convenient.

  (4) In the tank assembly of the above-described form, when the gas guiding member is in the valve opening position where the tip portion opens the flow passage opening, the gas consuming equipment side opening / closing valve of the first flow passage flows. When the path is opened, the gas in the tank can be allowed to pass from the third flow path side to the first flow path side. In this way, the third flow path is filled with the gas flow path from the gas supply source and the gas is discharged and supplied from the tank only by setting the tip of the gas guiding member at the valve opening position where the flow path opening is opened. Since it can be reliably used as a flow path, it is simple and effective in reducing the size, weight and cost.

  (5) According to another aspect of the present invention, a fuel cell system is provided. This fuel cell system is a fuel cell system having a fuel cell as a gas consuming device, and includes any one of the above-described tank assemblies, and supplies fuel gas from the tank assembly to the fuel cells. According to the fuel cell system of the above aspect, the third flow path of the valve mechanism attached to the base of the tank is filled with the filling path of the gas supplied from the gas supply source, and the discharge of the gas in the tank to the fuel cell Since it can be used together with the flow path without fail, the entire system can be made compact through reduction in size, weight, and cost as a tank assembly. In addition, when filling the gas from the gas supply source into the tank, the moisture contained in the gas from the gas supply source is guided into the tank through the third flow path. It is possible to suppress freezing of moisture in the valves of the gas consuming equipment side opening / closing valve and various valves provided in the flow path on the upstream side of the fuel cell, such as a pressure reducing valve and an injector.

  The present invention can be realized in various forms. For example, the present invention can be realized in the form of a valve mechanism mounted on a base of a tank, or in the form of a vehicle or the like equipped with a fuel cell system. it can.

1 is an explanatory diagram schematically showing a fuel cell system 10 as an embodiment of the present invention. FIG. 3 is an explanatory view showing a configuration of a flow path regulating valve mechanism 300 in a cross-sectional view. 4 is an exploded perspective view of components of a flow path regulating valve mechanism 300. FIG. 3 is an overall perspective view of a conversion shaft 310 that forms a main part of a flow path regulating valve mechanism 300. FIG. It is the perspective view from the other angle of the front-end | tip part of the conversion shaft 310. FIG. FIG. 6 is a sectional view taken along line 6-6 in FIG. It is explanatory drawing which shows roughly 10 A of fuel cell systems as other embodiment of this invention. It is explanatory drawing which shows the structure of the flow-path control valve mechanism 300A in other embodiment in sectional view. It is explanatory drawing which shows the structure of the flow-path control valve mechanism 300 in cross-sectional view in the state which changed the incorporating form.

  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 an embodiment of the present invention.

  As shown, the fuel cell system 10 includes a fuel cell vehicle 20, a fuel cell 100, a tank assembly 102, a hydrogen gas supply system 120, an air supply system 160 including a motor-driven compressor 150, and an illustration. A cooling system and a control device 200 are provided. 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 a tank assembly 102 that stores 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 a supply-side manifold at the end of the flow channel. 121, 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, and a fuel gas supply line 120F. The injector 125 and the pressure reducing valve 126 are provided from the fuel cell 100 side, and the discharge flow rate adjusting valve 127 is provided in the discharge conduit 124. 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 tank assembly 102 is mounted on the front side and the rear side of the vehicle, and includes a hydrogen gas tank 110 and a valve mechanism 111 mounted on the tank base. The hydrogen gas tank 110 is a resin tank having a fiber reinforced layer in which a thermosetting resin-containing fiber is wound around the outer periphery of a resin liner, and stores hydrogen gas filled and supplied at a high pressure from a hydrogen gas station (not shown). . The valve mechanism 111 includes an on-off valve 112, a check valve 113, a temperature sensor 114 that detects the temperature in the tank, and a device for the flow path regulating valve mechanism 300, a supply side tank flow path 115, a filling side tank flow A path 116 and a tank reaching channel 117 are provided. The on-off valve 112 opens and closes the flow path of the supply-side tank flow path 115 under the control of the control device 200 described later. The check valve 113 allows only the flow of hydrogen gas from a hydrogen gas station (not shown) in the filling-side tank channel 116. The filling-side tank passage 116 extends from the connection port 116p (see FIG. 2) of the valve mechanism 111 to the filling-side manifold 123, and is connected to the hydrogen filling conduit 120R of the hydrogen gas supply system 120. The supply-side tank flow path 115 extends from the connection port (not shown) to the supply-side manifold 121 similarly to the filling-side tank flow path 116 and reaches the supply-side manifold 121 and is connected to the fuel gas supply line 120F of the hydrogen gas supply system 120. . The tank reaching channel 117 extends from a channel connection point 119 between the supply side tank channel 115 and the filling side tank channel 116 and reaches the inside of the hydrogen gas tank 110. The flow path regulating valve mechanism 300 is provided at the flow path connection point 119 for filling hydrogen gas via the filling side tank flow path 116 and supplying hydrogen gas to the fuel cell 100 via the supply side tank flow path 115. Involved. With such a flow path configuration, the hydrogen gas tank 110 sends the hydrogen gas in the tank to the fuel gas supply line 120F via the tank arrival flow path 117, the supply side tank flow path 115, and the supply side manifold 121, and the injector 125 Then, the fuel cell 100 is supplied.

  The hydrogen gas supply system 120 having the above-described pipe line configuration is selected from either the hydrogen gas tank 110 of the tank assembly 102 on the vehicle front side or the rear side selected as a supply tank by the control device 200 described later, or both hydrogen gas tanks. The hydrogen gas is supplied to the anode of the fuel cell 100 after adjusting the flow rate of the injector 125 under the control of the control device 200 and reducing the pressure (pressure adjustment) of the pressure reducing valve 126, and then discharging the hydrogen gas The anode off-gas is discharged into the atmosphere from a discharge pipe 162 (to be described later) at a flow rate adjusted by an exhaust flow rate adjustment valve 127. 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. Further, the tank assembly 102 may be one, or three or more.

  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 at 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 hydrogen filling pipe line 120R and the filling side manifold 123. Further, the hydrogen gas tank 110 is guided through the filling-side tank channel 116. During such gas filling, the temperature sensor 114 for each hydrogen gas tank 110 outputs the tank temperature to the control device 200 and the station control device, and is used to check the amount of filling gas and the filling pressure.

  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 composed of a so-called microcomputer having a CPU, ROM, RAM, etc. for performing logical operations, and receives sensor input such as accelerator, sensor input accompanying gas filling, sensor input of the temperature sensor 114, etc. It controls various controls of the fuel cell 100 including opening / closing control of the injector 125 and the various valves described above.

  Next, the flow path regulating valve mechanism 300 will be described. FIG. 2 is an explanatory view showing the configuration of the flow path regulating valve mechanism 300 in cross section, FIG. 3 is an exploded perspective view of the components of the flow path regulating valve mechanism 300, and FIG. FIG. 5 is a perspective view of the tip end portion of the conversion shaft 310 from another angle, and FIG. 6 is a sectional view taken along line 6-6 in FIG.

  As illustrated, the flow path regulating valve mechanism 300 includes a conversion shaft 310, a holding sleeve 320, a coil spring 330, an adjustment piece 340, and a piece guide body 350. The conversion shaft 310 is inserted into the guide hole 111p1 formed in the valve mechanism 111, and the conical taper convex portion 312 on the tip side is positioned on the guide hole bottom 111pb of the guide hole 111p1. The guide hole 111p1 is drilled from the upper surface of the valve mechanism 111 to the above-described channel connection point 119 between the supply-side tank channel 115 and the filling-side tank channel 116, and the guide hole bottom 111pb is the channel connection point. It is formed to reach 119.

  The holding sleeve 320 has a cap shape, and is inserted into a fixed hole 111p2 formed in the valve mechanism 111 so as to be concentric with the guide hole 111p1 and larger in diameter. The holding sleeve 320 is positioned in the fixing hole 111p2 by a projection (not shown) and a recess (not shown) into which the projection enters, and is then held in the fixing hole. The coil spring 330 is incorporated in the holding sleeve 320, and exerts a spring biasing force upward on the flange portion 315 of the conversion shaft 310 in FIG. In addition, the holding sleeve 320 includes a guide notch 324 on its peripheral wall, and the conversion shaft 310 in which the flange protrusion 316 is inserted into the guide notch 324 can be advanced and retracted without rotating. The conversion shaft 310 is gas-sealed with respect to the guide hole 111p1 by the O-ring 314, advances and retreats along the guide hole 111p1, and supplies each plane of the two-surface width portion 313 provided on the base side of the taper convex portion 312 to the supply side tank. The opening of the flow path 115 is opposed to the opening of the filling side tank flow path 116. The taper convex portion 312 of the conversion shaft 310 is formed so as to be inclined with the opening tapered surface 117k of the tank reaching channel 117, and closes the tank reaching channel 117 at the channel opening by contacting the opening tapered surface 117k. To do.

  The top guide body 350 is screwed and fixed to the opening side of the fixing hole 111p2, and the adjustment top 340 is screwed with a female screw on the inner peripheral wall of the top guide body 350. The adjustment piece 340 is rotated up and down by a hexagon wrench or handle (not shown) and moved up and down in FIG. By the vertical movement of the adjustment piece 340, the conversion shaft 310 has an open position of the tank arrival passage 117 shown in FIG. 2 and a valve closing position in which the tank arrival passage 117 is closed as described in the taper convex portion 312. Advancing and retreating along the guide hole 111p1. The advancement / retraction of the conversion shaft 310 occurs without the rotation of the conversion shaft 310 due to the insertion of the flange protrusion 316 into the guide notch 324 in the holding sleeve 320 that has been positioned and fixed. Each plane of the width portion 313 remains opposed to the opening of the supply-side tank channel 115 and the opening of the filling-side tank channel 116. When the conversion shaft 310 is at the open position of the tank arrival channel 117 shown in FIG. 2, the two-sided width portion 313 is a gas channel in a region surrounded by the inner peripheral wall surface of the guide hole bottom 111pb and the two-sided width portion 313. And As shown in FIG. 6, the gas passage area Sb of the gas passage is at least the same as the passage area Sr of the supply-side tank passage 115 and the passage area Sr of the filling-side tank passage 116. Then, the gas passage area Sb was made slightly larger than the flow path area Sr.

  In the fuel cell system 10 of the present embodiment described above, the gas filling from the hydrogen gas station and the hydrogen gas supply in the tank to the fuel cell 100 are performed as follows. As shown in FIG. 2, the flow path regulating valve mechanism 300 has a position where the opening side of the tank reaching flow path 117 is opened by the tapered convex portion 312 of the conversion shaft 310 as the original position. Incorporated. With the conversion shaft 310 in this original position, gas is charged from the hydrogen gas station. During this gas filling, the control device 200 controls the opening / closing valve 112 of the supply-side tank passage 115 to be closed, and then the receptacle 122 is attached to the gas filling nozzle Gs. After the receptacle 122 is mounted, hydrogen gas is supplied at a high pressure from the hydrogen gas station, and the supplied hydrogen gas passes through the hydrogen filling pipe line 120R and the filling side manifold 123, and then the filling side tank of the flow path regulating valve mechanism 300. It flows into the flow path 116.

  The hydrogen gas (hereinafter referred to as “filled hydrogen gas”) that has flowed into the filling-side tank passage 116 in this way is converted to the conversion shaft 310 provided at the passage connection point 119 between the filling-side tank passage 116 and the supply-side tank passage 115. The gas flow is converted to the tank arrival flow path 117 side. The gas flow conversion will be described in detail. The charged hydrogen gas flowing through the filling-side tank channel 116 collides with the two-surface width portion 313, and then the plane of the two-surface width portion 313 and the lower end of the two-surface width portion 313. By being guided by the tapered side surface of the tapered protrusion 312 on the side, the gas flow is changed and flows into the tank reaching flow path 117. Therefore, even if the hydrogen gas contained in the filling hydrogen gas from the hydrogen gas station contains moisture, the moisture is transferred to the two-sided width portion 313 in detail by the change of the flow of the filling hydrogen gas by the two-sided width portion 313 of the conversion shaft 310. The charged hydrogen gas is led to the tank reaching channel 117 side together with the charged hydrogen gas. For this reason, according to the tank assembly 102 having the flow path regulating valve mechanism 300 of the present embodiment, moisture in the charged hydrogen gas is supplied to the supply side tank flow path 115 downstream of the flow path connection point 119 and the flow path. Since it is difficult to reach the on-off valve 112, the pressure reducing valve 126, and the injector 125, it is possible to suppress freezing of moisture in the on-off valve 112 of the supply-side tank channel 115. Also with respect to the pressure reducing valve 126 and the injector 125, water freezing in the valve can be suppressed. Therefore, according to the tank assembly 102 having the flow path regulating valve mechanism 300 of the present embodiment, the above-described devices such as the on-off valve 112 can be driven with high reliability even in a low temperature environment. Power generation performance can be secured.

  When hydrogen gas filling is performed as described above, a part of the filling hydrogen gas flowing through the filling-side tank channel 116 flows into the supply-side tank channel 115 side beyond the top of the tapered convex portion 312 of the conversion shaft 310. obtain. However, since the gas flow has already changed on the side of the filling-side tank channel 116, the hydrogen gas flowing into the supply-side tank channel 115 contains only a very small amount of moisture in the first place. Further, since the amount of hydrogen gas flowing into the supply-side tank passage 115 beyond the top of the taper convex portion 312 is very small, it is difficult for moisture to reach the opening / closing valve 112 of the supply-side tank passage 115. That is no different.

  The supply of hydrogen gas to the fuel cell 100 after completion of hydrogen gas filling is as follows. The control device 200 shown in FIG. 1 supplies the fuel cell 100 with hydrogen gas that has been filled in the hydrogen gas tank 110 (hereinafter referred to as in-tank hydrogen gas) with a supply amount determined by the accelerator depression amount or the like. At this time, the control device 200 controls the opening and closing of the on-off valve 112 of the supply-side tank passage 115 and adjusts the gas blowing amount for the injector 125 as well. When supplying the hydrogen gas in the tank, the hydrogen gas in the tank reaches the taper convex portion 312 of the conversion shaft 310 from the tank arrival flow path 117 and is guided by the tapered side surface of the taper convex portion 312 to the supply side. It is guided to the tank channel 115 and supplied to the fuel cell 100 through the supply side tank channel 115 without any trouble. In this case, in the filling-side tank channel 116, the hydrogen gas in the tank enters up to the check valve 113, but does not flow upstream of the check valve 113.

  In the tank assembly 102 having the flow path regulating valve mechanism 300 of the present embodiment, the tank reaching flow path 117 can be used as a filling flow path for the filling hydrogen gas supplied from the hydrogen gas station and flowing into the filling-side tank flow path 116. Also, it can be a discharge supply channel for bringing the hydrogen gas in the tank to the supply-side tank channel 115. For this reason, according to the tank assembly 102 having the flow path regulating valve mechanism 300 of the present embodiment, since the flow path in the valve mechanism 111 is not increased, there is no need to increase the outer diameter of the valve mechanism, and the size and weight can be reduced. Cost reduction can be achieved.

  In the tank assembly 102 having the flow path regulating valve mechanism 300 of the present embodiment, the tapered protrusion 312 of the conversion shaft 310 is brought into contact with the opening tapered surface 117k of the flow path opening of the tank arrival flow path 117 by operating the adjustment piece 340. The tank reaching channel 117 is closed at the channel opening. The supply-side tank channel 115 and the filling-side tank channel 116 are also closed at the channel connection point 119 by the conversion shaft 310. Therefore, according to the tank assembly 102 having the flow path regulating valve mechanism 300 of the present embodiment, the supply side tank flow path 115 and the filling side tank flow path 116 are individually set in a state where the tank arrival flow path 117 is closed. Therefore, it is useful for avoiding gas leak from the flow path.

  The tank assembly 102 having the flow path regulating valve mechanism 300 according to the present embodiment attempts to close and open the tank reaching flow path 117 as described above by the conversion shaft 310 of the flow path regulating valve mechanism 300. There is no need to separately provide an opening / closing valve for opening / closing the channel in the channel 117, and the configuration can be simplified, the number of parts can be reduced, and the like.

  The tank assembly 102 having the flow path regulating valve mechanism 300 according to the present embodiment is configured so that the tank reaching flow path 117 is simply placed in the original position shown in FIG. Since it can be used as both the gas filling flow path for the filling hydrogen gas and the discharge supply flow path for the hydrogen gas in the tank, it is simple, and the effectiveness of downsizing, weight reduction, and cost reduction is enhanced.

  In the tank assembly 102 having the flow path regulating valve mechanism 300 according to the present embodiment, the gas passage area of the gas flow path formed by the two-surface width portion 313 of the conversion shaft 310 and the guide hole bottom 111pb for changing the flow of the charged hydrogen gas. Sb was made slightly larger than the flow area Sr of the supply side tank flow path 115 and the filling side tank flow path 116. Therefore, according to the tank assembly 102 having the tank assembly 102 of the present embodiment, an inadvertent pressure increase is caused when the hydrogen gas tank 110 is charged with hydrogen gas and when the hydrogen gas in the tank is supplied to the fuel cell 100. Since it is not invited, it is possible to prevent support for gas filling and gas supply.

  In the tank assembly 102 having the valve mechanism 111 of the present embodiment, the supply-side tank flow path 115 and the filling-side tank flow path 116 are linearly connected at a flow path connection point 119. Therefore, flow path formation in the valve mechanism 111 is facilitated, and cost reduction can be achieved.

  According to the fuel cell system 10 having the tank assembly 102 of the present embodiment, the entire system can be made compact and light weight through the downsizing, weight reduction, and cost reduction of the tank assembly 102 as described above. Can do. In addition, since it is difficult for moisture to reach the open / close valve 112, the pressure reducing valve 126, and the injector 125 of the supply-side tank passage 115, and the freezing of moisture in these devices can be suppressed, the fuel cell system 10 of the present embodiment Accordingly, each of the above devices such as the open / close valve 112 can be driven with high reliability even in a low temperature environment, and thus the power generation performance of the fuel cell 100 in a low temperature environment can be ensured.

  Next, another embodiment will be described. FIG. 7 is an explanatory view schematically showing a fuel cell system 10A as another embodiment of the present invention. In this embodiment, as shown in FIG. 7, the valve mechanism 111 includes a tank side opening / closing valve 118 that opens and closes the tank reaching passage 117, and the passage regulating valve mechanism 300A has the following configuration. . FIG. 8 is an explanatory view showing the structure of a flow path regulating valve mechanism 300A according to another embodiment in a sectional view.

  As shown in FIG. 8, the valve mechanism 111 includes a conversion shaft 310A inserted into the guide hole 111p1. Unlike the conversion shaft 310 of the previous embodiment, the conversion shaft 310A does not advance or retreat in the guide hole 111p1, and is positioned in the rotational direction and the guide hole axial direction by the flange portion 315. The valve mechanism 111 presses and fixes the conversion shaft 310 </ b> A with a screw cap 360. The conversion shaft 310A fixed in this way has the tapered convex portion 312 at the tip thereof positioned at the guide hole bottom 111pb at the flow path connection point 119, like the conversion shaft 310 in the previous embodiment, and the tank reaching flow path. 117 is left open. Even in the conversion shaft 310 </ b> A, each plane of the two-surface width portion 313 is opposed to the opening of the supply-side tank channel 115 and the opening of the filling-side tank channel 116. As a result, the charged hydrogen gas that has flowed from the filling-side tank channel 116 is converted into the gas flow at the two-surface width portion 313, led to the tank reaching channel 117, and stored in the hydrogen gas tank 110. Further, the hydrogen gas in the tank of the hydrogen gas tank 110 passes through the opening of the tank reaching flow path 117, and then is guided by the tapered side surface of the taper convex portion 312 and enters the supply side tank flow path 115, and from the injector 125 to the fuel cell. 100.

  Also by the tank assembly 102A having the flow path regulating valve mechanism 300A of this embodiment, the flow of the charged hydrogen gas is changed at the two-surface width portion 313 of the conversion shaft 310A, and thus the above-described effects can be achieved. In the tank assembly 102 </ b> A having the flow path regulating valve mechanism 300 </ b> A of this embodiment, the supply side tank flow path 115 is closed by closing the tank arrival flow path 117 with the tank side opening / closing valve 118 provided in the tank arrival flow path 117. As a single flow path system in which the filling side tank flow path 116 is connected at the flow path connection point 119, the leak inspection of both flow paths can be performed simultaneously, which is convenient. The tank side opening / closing valve 118 may be manually operated, or may be an electric opening / closing valve that is driven and controlled by the control device 200.

  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, the flow path regulating valve mechanism 300 is incorporated from the upper surface side of the valve mechanism 111, but may be incorporated from the side surface side of the valve mechanism 111. FIG. 9 is an explanatory diagram showing the configuration of the flow path regulating valve mechanism 300 in a cross-sectional view with the built-in form changed. As shown in the drawing, in this embodiment, the tank reaching channel 117 reaching the hydrogen gas tank 110 is a bent channel, and includes a water reservoir 117w on the back side of the upstream channel extending from the guide hole bottom 111pb. For example, the supply-side tank channel 115 extends horizontally from the back side in the drawing in the drawing and is connected to the filling-side tank channel 116 at a channel connection point 119, and the charging-side tank channel 116 is connected to the channel connection point 119. It extends horizontally in front of the page. In the guide hole bottom 111pb, the conversion shaft 310 is opposed to the opening of the supply-side tank channel 115 and the opening of the filling-side tank channel 116 as described above. The tank assembly 102 having the flow path regulating valve mechanism 300 having such an assembly form can also provide the effects described above. Normally, since the hydrogen gas tank 110 is mounted horizontally in a vehicle, the flow path regulating valve mechanism 300 shown in FIG. 9 is an adjustment piece 340 that is an operation target when the tank reaching flow path 117 is closed at the flow path opening. Can be operated from under the vehicle floor. Therefore, if the fuel cell-equipped vehicle 20 shown in FIG. 1 is jacked up in the leak inspection of the supply-side tank passage 115 and the filling-side tank passage 116, the maintenance worker can easily adjust the adjustment piece 340 from the lower side of the vehicle floor. Can be operated, improving workability.

DESCRIPTION OF SYMBOLS 10, 10A ... Fuel cell system 20 ... Fuel cell vehicle 100 ... Fuel cell 102, 102A ... Tank assembly 110 ... Hydrogen gas tank 111 ... Valve mechanism 111p1 ... Guide hole 111p2 ... Fixed hole 111pb ... Guide hole bottom 112 ... Open / close valve 113 ... Check valve 114 ... Temperature sensor 115 ... Supply side tank flow path 116 ... Filling side tank flow path 116p ... Connection port 117 ... Tank arrival flow path 117k ... Opening taper surface 117w ... Moisture accumulation 118 ... Tank side on-off valve 119 ... Flow path Connection point 120 ... Hydrogen gas supply system 120F ... Fuel gas supply line 120R ... Hydrogen filling line 121 ... Supply side manifold 122 ... Receptacle 123 ... Filling side manifold 124 ... Discharge line 125 ... Injector 126 ... Pressure reducing valve 127 ... Discharge Quantity adjustment valve 150 ... Compressor 160 ... Air supply system 161 ... Oxygen supply line 162 ... Discharge line 163 ... Discharge flow rate adjustment valve 200 ... Control device 300, 300A ... Flow path regulating valve mechanism 310, 310A ... Converting shaft 312 ... Taper Convex part 313 ... Two-sided width part 314 ... O-ring 315 ... Flange part 316 ... Flange protrusion 320 ... Holding sleeve 324 ... Guide notch 330 ... Coil spring 340 ... Adjustment piece 350 ... Top guide body 360 ... Screw cap Sb ... Gas passage area Sr ... Flow path area Gs ... Gas filling nozzle

Claims (5)

A tank assembly,
A tank for storing a gas supplied from a gas supply source, and supplying the stored gas to a gas consuming device;
A valve mechanism mounted on the base of the tank,
The valve mechanism is
A first flow path having a gas consuming equipment side opening / closing valve connected to a gas pipe leading to the gas consuming equipment and configured to open and close the flow path on the gas consuming equipment side;
A second flow path having a check valve connected to a gas pipe from the gas supply source and allowing only a gas flow from the gas supply source;
A third flow path extending from a connection point between the second flow path and the first flow path and reaching the inside of the tank;
The gas that is provided at the connection location and that has been supplied from the gas supply source and has passed through the second flow path collides to change the gas flow to the third flow path side, and the gas flow is A tank assembly comprising: a gas guiding member for guiding the converted gas to the third flow path.   The tank assembly according to claim 1, wherein the third flow path includes a third flow path opening / closing valve that opens and closes the flow path. The gas guiding member includes a tip portion that opens and closes the flow channel opening of the third flow channel at a connection location, and the tip portion serves as the third flow channel opening / closing valve, and the tip portion is configured to flow the flow channel. When a gas flows from the gas supply source into the second flow path when the valve opening is in the open position, the gas that has flowed in collides with the tip and the flow of the gas that has flowed in The tank assembly according to claim 2, wherein the tank assembly is converted to the third flow path side.   When the gas consumption member side opening / closing valve of the first flow path opens the flow path when the distal end portion is in the valve opening position where the flow path opening is opened, the gas flow guide member opens the flow path of the third flow path. The tank assembly according to claim 3, wherein a gas is allowed to pass from the side to the first flow path side. A fuel cell system having a fuel cell as a gas consuming device,
A fuel cell system comprising the tank assembly according to any one of claims 1 to 4, wherein fuel gas is supplied from the tank assembly to the fuel cell.

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