housing

Abstract

Even if hydrogen leaks inside the housing of the fuel cell system, it is possible to suppress the leaked hydrogen from flowing into the side of the power storage unit disposed inside the housing, thereby improving the safety of the fuel cell system. A housing (10) that houses a fuel cell system (1) has ventilation holes (14, 16) capable of ventilating the inside and outside of the housing (10) at at least one of the side surfaces and the upper surface portion, and has a gas supply device (21, 22) that discharges the air taken in from one of these ventilation holes from the other ventilation hole. The fuel cell system includes: a hydrogen storage unit (30); a fuel cell stack (40) that generates electricity by hydrogen supplied from the hydrogen storage unit (30); a pipe that connects the hydrogen storage unit (30) and the fuel cell stack (40); and a power storage unit (50) that stores the power obtained by the power generation of the fuel cell stack (40) or the supply from the outside.

Description

Technical Field

[0001] The present invention relates to a housing for accommodating a fuel cell system, the fuel cell system including: a hydrogen storage unit; a fuel cell stack that generates electricity using hydrogen supplied from the hydrogen storage unit; and a power storage unit that can store the electricity generated by the fuel cell stack. Background Art

[0002] In recent years, fuel cell systems with high energy efficiency and environmental friendliness have attracted attention. A fuel cell system includes: a hydrogen storage unit that stores hydrogen; a fuel cell stack that generates electricity using hydrogen supplied from the hydrogen storage unit; and a power storage unit that stores the electricity obtained by the power generation of the fuel cell stack.

[0003] There are technologies for mounting such a fuel cell system on a vehicle and supplying the power of the fuel cell system to a drive motor of the vehicle, to an external electronic device, etc. (for example, refer to Patent Document 1 below). In addition, there are also technologies for mounting such a fuel cell system on a trailer towed by a vehicle, etc., and using it as a movable mobile power source (for example, refer to Patent Documents 2 and 3 below).

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-141078

[0007] Patent Document 2: Japanese Patent Application Laid-Open No. 2006-523373

[0008] Patent Document 3: Japanese Patent Application Laid-Open No. 2003-317787 Summary of the Invention

[0009] Problems to be Solved by the Invention

[0010] In order to improve the convenience as a mobile power source, in a fuel cell system, it is considered to accommodate the hydrogen storage unit, the fuel cell stack, and the power storage unit in the same housing. However, if the three are accommodated in the same housing, when hydrogen leaks from the hydrogen storage unit, the fuel cell stack, or the pipe connecting the two, the leaked hydrogen may flow into the power storage unit side and cause a fire. From the viewpoint of improving the safety of the fuel cell system, there is room for improvement in this regard.

[0011] The present invention provides a housing that can suppress the leaked hydrogen from flowing into the power storage unit side disposed in the housing even when hydrogen leaks in the housing of the fuel cell system, and improves the safety of the fuel cell system.

[0012] Means for Solving the Problems

[0013] The present invention provides a housing for accommodating a fuel cell system, the fuel cell system including:

[0014] A hydrogen storage unit for storing hydrogen;

[0015] A fuel cell stack that generates electricity using hydrogen supplied from the hydrogen storage unit;

[0016] Piping that connects the hydrogen storage unit and the fuel cell stack; and

[0017] A power storage unit that stores electric power obtained by the power generation of the fuel cell stack or supplied from the outside, wherein

[0018] Ventilation holes capable of ventilating the inside and outside of the housing are provided in at least one of the side surface portions and the upper surface portion of the housing.

[0019] The housing is provided with a gas supply device that discharges the air taken in from one of the ventilation holes in the upper surface portion and the ventilation holes in the side surface portion from the other ventilation hole.

[0020] Advantages of the Invention

[0021] According to the present invention, it is possible to provide a housing that can suppress the leaked hydrogen from flowing into the power storage unit disposed inside the housing even if hydrogen leaks inside the housing of the fuel cell system, thereby improving the safety of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of the fuel cell system and the housing of the present embodiment.

[0023] Figure 2 is a perspective view showing the inside of the fuel cell system and the housing as viewed from above. Figure 1 of the fuel cell system and the housing.

[0024] Figure 3 is a perspective view showing the inside of the fuel cell system and the housing as viewed from the front. Figure 1 of the fuel cell system and the housing.

[0025] Figure 4 is a perspective view showing the inside of the fuel cell system and the housing as viewed from the left side. Figure 1 of the fuel cell system and the housing.

[0026] Figure 5 is a perspective view showing the inside of the fuel cell system and the housing as viewed from the right side. Figure 1 of the fuel cell system and the housing.

[0027] Figure 6 is a front view of the input / output unit.

[0028] Figure 7It is a schematic diagram showing the state of charging an electronic device and a vehicle from a fuel cell system.

[0029] Figure 8 It is a schematic diagram of a moving body in which a vehicle as a towing part and a trailer as a towed part are connected.

[0030] Figure 9A It is a schematic diagram of another example of a moving body, which is a perspective top view of the moving body.

[0031] Figure 9B It is a schematic diagram of another example of a moving body, which is a side view of the moving body.

[0032] Figure 10A It is an enlarged view of the connecting part in the moving body of FIG. 9.

[0033] Figure 10B It is a rear view of the trailer in the moving body of FIG. 9.

[0034] Figure 10C It is a front view of the trailer in a state where the loading and unloading part in the moving body of FIG. 9 is exposed.

[0035] Figure 10D It is a front view of the trailer in a state where a cover member is installed in the moving body of FIG. 9.

[0036] Figure 11 It is a block diagram showing an example of the functional structure of the moving body of the present embodiment.

[0037] Figure 12 It is a flowchart showing an example of the control method of the fuel cell system of the present embodiment.

[0038] Figure 13 It is a timing chart showing a specific power supply example of the fuel cell system of the present embodiment.

[0039] Explanation of reference numerals:

[0040] 1 Fuel cell system

[0041] 10 Housing

[0042] 14, 16 Ventilation holes

[0043] 18 Edge

[0044] 19 Input / output part

[0045] 21, 22 Air supply devices

[0046] 30 Hydrogen storage part

[0047] 40 Fuel cell stack

[0048] 50 Power storage part

[0049] 100 Vehicle (traction unit)

[0050] 200 Trailer (trailed unit)

[0051] 210 Loading and unloading unit

[0052] 220 Cover member

[0053] 230 First power supply unit

[0054] 300 Moving body

[0055] S Parking space. Detailed implementation manner

[0056] Hereinafter, an embodiment of the present invention will be described based on the drawings. In addition, in this specification and the like, in order to make the description simple and clear, the front, rear, left, and right directions are described according to the direction observed by the user of the fuel cell system of this embodiment. In the drawings, the front of the housing that houses the fuel cell system is represented as Fr, the rear is represented as Rr, the left is represented as L, the right is represented as R, the upper is represented as U, and the lower is represented as D.

[0057] As Figure 1 shown, the fuel cell system 1 of this embodiment is a device capable of generating electricity using hydrogen as a power generation energy source, and includes a housing 10. The housing 10 forms the outer shape of the fuel cell system 1 and houses various components and units included in the fuel cell system 1 (for example, the fuel cell stack 40 described later).

[0058] The housing 10 includes: a box-shaped main body 11 made of resin or the like, with opening portions (not shown) provided on the left side face and the right side face; a cover portion 12 that covers the opening portions on the left side face and the right side face of the main body 11; and casters 13 provided on the lower surface portion of the main body 11. In addition, ventilation holes 14 and 16 that allow air to flow in and out of the housing 10 are formed in a substantially rectangular shape extending in the left-right direction on the front surface portion (front side side face) and the upper surface portion of the main body 11.

[0059] For example, one of the ventilation holes 14 and 16 (e.g., ventilation hole 14) functions to take in air outside the housing 10 into the housing 10, while the other ventilation hole (e.g., ventilation hole 16) functions to discharge the air inside the housing 10 to the outside of the housing 10. Through the ventilation holes 14 and 16, the ventilation between the inside and outside of the housing 10 can be ensured, the retention of high-temperature air inside the housing 10 can be suppressed, and the cooling of the fuel cell system 1 can be achieved. In addition, by ensuring the ventilation between the inside and outside of the housing 10 using the ventilation holes 14 and 16, even if hydrogen is generated inside the housing 10 for some reason, the generated hydrogen can be quickly discharged to the outside of the housing 10.

[0060] The ventilation hole 14 is provided at a position corresponding to the edge 18 along the edge 18 that connects the front surface portion and the upper surface portion of the main body 11 (i.e., the housing 10) on the front surface portion of the main body 11. In addition, the ventilation hole 16 is provided at a position corresponding to the edge 18 along the above-mentioned edge 18 on the upper surface portion of the main body 11. In other words, the edge 18 is interposed between the ventilation hole 14 and the ventilation hole 16. Thereby, compared with the case where the ventilation hole 14 and the ventilation hole 16 are provided directly adjacent to each other, the strength of the main body 11 (i.e., the housing 10) can be maintained, and the ventilation between the inside and outside of the housing 10 can be ensured.

[0061] In addition, in the ventilation holes 14 and 16, a plurality of louvers 15 and 17 parallel to each other are provided along their longitudinal directions (i.e., the left-right direction). Through the louvers 15 and 17, for example, it can be configured such that air discharged from the exhaust-side ventilation hole (e.g., ventilation hole 16) among the ventilation holes 14 and 16 is difficult to bypass into the intake-side ventilation hole (e.g., ventilation hole 14). By configuring in this way, the intake of the high-temperature air discharged to the outside of the housing 10 back into the housing 10 can be suppressed. In addition, by configuring in this way, the intake of the hydrogen discharged to the outside of the housing 10 back into the housing 10 can also be suppressed.

[0062] In addition, on the front surface portion of the main body 11, an input / output unit 19 for outputting the power of the fuel cell system 1 to the outside or inputting the power from the outside to the fuel cell system 1 is provided below the ventilation hole 14. By providing the input / output unit 19 on the front surface portion of the main body 11 in the same way as the ventilation hole 14, it is possible to simultaneously achieve ensuring the accessibility of the user to the input / output unit 19 and ensuring the ventilation of the ventilation hole 14.

[0063] That is, from the viewpoint of ensuring the ventilation of the ventilation holes 14, the fuel cell system 1 can be used in a state where a predetermined space is ensured on the front surface side of the housing 10 (main body 11). Therefore, by providing the input / output unit 19 on the front surface portion of the main body 11 in the same manner as the ventilation holes 14, when the fuel cell system 1 is used, the user can easily access the input / output unit 19 via the above-mentioned space, and the connection between the fuel cell system 1 and external devices can be smoothly performed. In addition, an example of the input / output unit 19 will be described later using Figure 6 Describe an example of the input / output unit 19.

[0064] As Figures 2 to 5 shown, the fuel cell system 1 is configured to house a hydrogen storage unit 30 having a hydrogen supply / discharge hole 31, a fuel cell stack 40 that generates electricity using hydrogen supplied from the hydrogen storage unit 30, a pipe (not shown) that connects the hydrogen storage unit 30 and the fuel cell stack 40, and a power storage unit 50 that stores electric power obtained by the power generation of the fuel cell stack 40 or supply from the outside in the housing 10.

[0065] The hydrogen storage unit 30 is a tank or the like that can store hydrogen (for example, liquid hydrogen) supplied from the outside via the supply / discharge hole 31. The supply / discharge hole 31 is provided to protrude leftward from the center of the left side surface of the hydrogen storage unit 30 and faces the lid portion 12 that covers the opening portion of the left side surface of the main body 11 in the left-right direction. Therefore, the user can access the supply / discharge hole 31 by removing the lid portion 12 that covers the opening portion of the left side surface of the main body 11 from the main body 11, and can easily charge hydrogen into the hydrogen storage unit 30. The hydrogen stored in the hydrogen storage unit 30 is supplied to the fuel cell stack 40 via the supply / discharge hole 31 and the above-mentioned pipe having one end connected to the supply / discharge hole 31 and the other end connected to the fuel cell stack 40.

[0066] The hydrogen storage unit 30 is disposed at a position that overlaps with the ventilation hole 16 when the housing 10 is viewed from above, and is disposed at a position that overlaps with the ventilation hole 14 when the housing 10 is viewed from the front (that is, viewed from the side on the front side). By disposing the hydrogen storage unit 30 in this way, for example, when charging hydrogen into the hydrogen storage unit 30, the hydrogen released to the periphery of the hydrogen storage unit 30 (hereinafter, also referred to as released hydrogen) can be quickly discharged from the ventilation holes 14 and 16 to the outside of the housing 10. Therefore, it is possible to prevent the released hydrogen from staying in the housing 10 and flowing into the power storage unit 50 side, and the safety of the fuel cell system 1 can be improved.

[0067] In addition, by providing a structure that rapidly discharges the released hydrogen to the outside of the housing 10, in the case where a hydrogen detector (not shown) is provided inside the housing 10, the hydrogen detector can distinguish and detect the hydrogen leaked from the hydrogen storage unit 30, the fuel cell stack 40, or the pipes connecting the two (hereinafter also referred to as leaked hydrogen) from the released hydrogen. That is, it is considered that the released hydrogen is not detected by the hydrogen detector and is rapidly discharged to the outside of the housing 10 through the ventilation hole 16 or the like. In contrast, since the leaked hydrogen generated from the fuel cell stack 40 or the pipes connecting the hydrogen storage unit 30 and the fuel cell stack 40 remains inside the housing 10 at least temporarily, it is considered that the leaked hydrogen is detected by the hydrogen detector. Therefore, by providing a structure that rapidly discharges the released hydrogen to the outside of the housing 10, in the case where a hydrogen detector is provided inside the housing 10, the leaked hydrogen can be distinguished and detected from the released hydrogen by the hydrogen detector (in other words, only the leaked hydrogen is detected).

[0068] The fuel cell stack 40 generates electricity by chemically reacting the hydrogen supplied from the hydrogen storage unit 30 with oxygen in the air. The electricity generated by the fuel cell stack 40 is output from an output terminal (not shown) provided in the fuel cell stack 40 and supplied to the power storage unit 50 via wiring (not shown) or the like. In addition, the electricity generated by the fuel cell stack 40 can also be output to the outside of the fuel cell system 1 via the input / output unit 19.

[0069] The fuel cell stack 40 is disposed behind the hydrogen storage unit 30 inside the housing 10. In addition, the connection portion of the fuel cell stack 40 connected to the above-mentioned pipe is provided on one side surface side (the left side surface side in the present embodiment) when the housing 10 is viewed from above. Thus, schematically, the pipe connecting the hydrogen storage unit 30 (supply / discharge hole 31) and the fuel cell stack 40, that is, the passage of hydrogen from the hydrogen storage unit 30 to the fuel cell stack 40, can be as Figure 2 shown by the arrow indicated by the symbol X1 in the figure, and is located on the left side inside the housing 10 and extends from the front to the rear.

[0070] In addition, the above-mentioned output terminal provided in the fuel cell stack 40 is provided on the other side surface side (the right side surface side in the present embodiment) when the housing 10 is viewed from above. Therefore, schematically, the conversion path from hydrogen to electricity performed by the fuel cell stack 40, as Figure 2 shown by the arrow indicated by the symbol X2 in the figure, is located at the rear inside the housing 10 and extends from the left to the right. Here, the conversion path from hydrogen to electricity performed by the fuel cell stack 40 is, for example, a line segment connecting the connection portion of the fuel cell stack 40 to the above-mentioned pipe and the above-mentioned output terminal provided in the fuel cell stack 40.

[0071] The power storage unit 50 stores the power supplied from the fuel cell stack 40. The power storage unit 50 is implemented by, for example, any type of secondary battery such as a lithium-ion battery, a nickel-metal hydride battery, or a lead-acid battery. The power stored in the power storage unit 50 can be output to the outside of the fuel cell system 1 via the input / output unit 19.

[0072] As Figures 3 to 5 shown, the power storage unit 50 is disposed on the lower surface portion (bottom surface) of the housing 10. Further, inside the housing 10, the upper surface portion of the power storage unit 50 is disposed at a position lower than the hydrogen storage unit 30 (supply / discharge holes 31), the fuel cell stack 40, and the pipes connecting the two. In other words, inside the housing 10, the hydrogen storage unit 30 (supply / discharge holes 31), the fuel cell stack 40, and the pipes connecting the two are disposed at positions higher than the upper surface portion of the power storage unit 50.

[0073] In this way, by disposing the components such as the supply / discharge holes 31, the fuel cell stack 40, and the pipes connecting the two, which may leak hydrogen, at positions higher than the upper surface portion of the power storage unit 50, even if hydrogen leaks from these components, it is possible to suppress the leaked hydrogen from flowing into the power storage unit 50 side. That is, hydrogen, which is lighter than air, will move upward (i.e., in the direction opposite to the power storage unit 50) even if it leaks from the above-mentioned components. Therefore, by disposing the components with the possibility of hydrogen leakage at positions above the power storage unit 50, even if hydrogen leaks from these components, it is possible to suppress the leaked hydrogen from flowing into the power storage unit 50 side, and the safety of the fuel cell system 1 can be improved.

[0074] In addition, a control unit 60 is also provided inside the housing 10. The control unit 60 includes, for example, a power conversion unit (not shown) composed of a DC / DC converter, an inverter, etc., and a control device (not shown) composed of a microcomputer for controlling the power conversion unit. The control unit 60 is electrically connected to the power storage unit 50 and the input / output unit 19, for example, converts the power output from the power storage unit 50 into a specified power (for example, 100 [V] and 50 [Hz] alternating current), and supplies the converted power to the input / output unit 19. Thereby, the fuel cell system 1 can output power that is convenient for the user to use from the input / output unit 19.

[0075] In addition, the control unit 60 can also be converted into multiple types of power so that multiple types of power such as high-voltage power and low-voltage power can be output from the input / output unit 19. Thereby, for example, low-voltage power can be output from the power supply holes 81 and 82 described later in the input / output unit 19, and high-voltage power can be output from the power supply hole 83 described later in the input / output unit 19.

[0076] In addition, the control unit 60 is disposed inside the housing 10 to the right of the hydrogen storage unit 30 and in front of the fuel cell stack 40. In addition, the input / output unit 19 is also disposed on the right side in the housing 10 corresponding to the control unit 60. Further, terminals, wirings, etc. for electrically connecting the control unit 60, the power storage unit 50, and the input / output unit 19 are also disposed on the right side in the housing 10 corresponding to the control unit 60. Therefore, schematically speaking, the path of electricity in the housing 10 is, as shown by the arrow indicated by the symbol X3 in Figure 2 , from the rear to the front at a position on the right side inside the housing 10.

[0077] That is, each component of the fuel cell system 1 is arranged inside the housing 10 such that when looking down at the housing 10, the hydrogen passage path X1, the conversion path X2 from hydrogen to electricity, and the electricity passage path X3 form a substantially U shape. Thereby, components that handle hydrogen (i.e., components where hydrogen leakage is possible) and components that handle electricity can be separately arranged inside the housing 10. Even if hydrogen leaks from the components that handle hydrogen, it is possible to suppress the inflow of the hydrogen to the side of the components that handle electricity.

[0078] That is, in the present embodiment, components that handle hydrogen such as the supply / discharge hole 31, the pipe connecting the hydrogen storage unit 30 and the fuel cell stack 40, and the connection part in the fuel cell stack 40 to this pipe are provided in the hydrogen usage area A1 (refer to Figure 2 ) that becomes the left side when looking down at the housing 10. On the other hand, components that handle electricity such as the input / output unit 19, the control unit 60, terminals, wirings, etc. for electrically connecting the control unit 60, the power storage unit 50, and the input / output unit 19 are provided in the electricity usage area A2 (refer to Figure 2 ) that becomes the right side when looking down at the housing 10. In this way, by dividing the areas where components that handle hydrogen and components that handle electricity are respectively arranged, it is possible to separately arrange the components that handle hydrogen and the components that handle electricity inside the housing 10. Even if hydrogen leaks from the components that handle hydrogen, it is possible to suppress the inflow of the hydrogen to the side of the components that handle electricity, and it is possible to improve the safety of the fuel cell system 1.

[0079] In addition, inside the housing 10, air supply devices 21 and 22 are provided at positions vertically opposed to the above ventilation holes 16 (ventilation holes provided in the upper surface portion of the main body 11). The air supply devices 21 and 22 are, for example, electric fans having impellers that are rotationally driven according to the supply of electricity. And, by the rotation of the impellers of the air supply devices 21 and 22, the air inside the housing 10 is conveyed outside the housing 10 via the ventilation holes 16. By the air supply devices 21 and 22, the housing 10 can promote the intake of air from the ventilation holes 14 into the housing 10 and discharge the air inside the housing 10 from the ventilation holes 16, and can improve the ventilation between the inside and outside of the housing 10.

[0080] In addition, according to the air supply devices 21 and 22, the air permeability inside and outside the housing 10 can be improved. Therefore, the hydrogen released when charging hydrogen into the hydrogen storage unit 30, the hydrogen leaking from the hydrogen storage unit 30, the piping, etc., can also be quickly discharged to the outside of the housing 10, and it is possible to prevent this hydrogen from staying inside the housing 10 and flowing into the power storage unit 50 side. Thereby, the safety of the fuel cell system 1 can be improved. That is, the specific gravity of the hydrogen leaking into the housing 10 is lighter than that of air, so it rises inside the housing 10. Therefore, by arranging the air supply devices 21 and 22 so as to face the ventilation holes 16 on the upper surface portion of the main body 11, the hydrogen rising inside the housing 10 can be quickly discharged to the outside of the housing 10 through the ventilation holes 16.

[0081] In addition, as Figure 3 shown, the air supply device 21 is arranged in the vertical direction at a position facing the supply and discharge holes 31. In other words, when looking down at the housing 10, the air supply device 21 is arranged at a position overlapping the supply and discharge holes 31. Thereby, the air supply device 21 can quickly discharge the hydrogen leaking from the supply and discharge holes 31 and rising upward to the outside of the housing 10, and the safety of the fuel cell system 1 can be improved.

[0082] In addition, as Figure 6 shown, the input / output unit 19 has a plurality of power supply holes, for example, power supply holes 81, 82, and 83. In the input / output unit 19, the power supply holes 81, 82, and power supply holes having the same shape as them are power supply holes for inputting and outputting low-voltage power of about 100 [V] (hereinafter, also referred to as low-voltage power supply holes). The plurality of low-voltage power supply holes provided in the input / output unit 19 are arranged offset from each other in the vertical and horizontal directions. Thereby, for example, even if a large-sized adapter such as an AC adapter is inserted into one low-voltage power supply hole, it is possible to prevent it from interfering with other low-voltage power supply holes. Therefore, a plurality of devices can be connected to the fuel cell system 1 at the same time, and the convenience of the fuel cell system 1 can be improved. In addition, the low-voltage power supply holes such as the power supply holes 81 and 82 are used, for example, when connecting the fuel cell system 1 to an electronic device 150 described later.

[0083] In addition, in the input / output unit 19, the power supply hole 83 is a power supply hole for inputting and outputting high-voltage power such as 200 [V] (hereinafter, also referred to as a high-voltage power supply hole). In addition, the power supply hole 83 (that is, the high-voltage power supply hole) is used, for example, when connecting the fuel cell system 1 to a vehicle 100 described later.

[0084] (Usage examples of the fuel cell system)

[0085] Next, usage examples of the fuel cell system 1 will be described. The fuel cell system 1 can supply power to an external device connected to the input / output unit 19. AsFigure 7 As shown, the fuel cell system 1 can be connected to the vehicle 100, for example. Here, the vehicle 100 is, for example, a hybrid electric vehicle or an electric vehicle. That is, the vehicle 100 includes a drive device (for example, refer to the reference numeral 110 in Figure 11 the attached drawings) that is driven according to power supply and a battery (for example, refer to the reference numeral 120 in Figure 11 the attached drawings) that can supply power to the drive device. Moreover, the vehicle 100 travels by being driven by the drive device.

[0086] When the fuel cell system 1 is connected to the vehicle 100, it supplies power for driving the drive device of the vehicle 100 and power for charging the battery of the vehicle 100. In addition, the fuel cell system 1 can be connected to the user's electronic device 150. Here, the electronic device 150 is an electronic device with a battery such as a smart phone, for example. When the fuel cell system 1 is connected to the electronic device 150, it supplies power for charging the battery of the electronic device 150. According to such a fuel cell system 1, for example, it is also useful for ensuring power supply in case of emergencies such as disasters.

[0087] In addition, as Figure 8 shown, the fuel cell system 1 can also be used by being mounted on the moving body 300. Here, the moving body 300 is composed of the vehicle 100 and the trailer 200 towed by the vehicle 100. The vehicle 100 is an example of the towing part in the present invention, and the trailer 200 is an example of the non-towing part in the present invention.

[0088] The fuel cell system 1 (housing 10) mounted on the trailer 200 is electrically connected to the vehicle 100 and supplies power for driving the drive device of the vehicle 100 and power for charging the battery of the vehicle 100. Thereby, the fuel cell system 1 can function as a range extender for the vehicle 100.

[0089] In addition, as Figure 8 shown, the fuel cell system 1 (housing 10) is arranged in a state of being mounted on the trailer 200 such that the side surface portion (i.e., the front surface portion) provided with the input / output portion 19 faces the vehicle 100 side. Thereby, not only can the mechanical connection between the vehicle 100 and the trailer 200 (the connection for towing the trailer 200 by the vehicle 100) be shortened, but also the wiring distance between the vehicle 100 and the fuel cell system 1 can be shortened, and it is easy to electrically connect the two. Furthermore, by doing so, the traveling wind generated due to the movement (travel) of the moving body 300 can be effectively used to efficiently cool the fuel cell system 1.

[0090] In addition, when the fuel cell system 1 (housing 10) is mounted on the trailer 200, it is disposed at a position closer to the vehicle 100 side than the rear end portion of the wheels of the trailer 200 (refer to the imaginary line L1). Thus, since the housing 10 is disposed at a position closer to the front side than the rear end portion of the wheels of the trailer 200, when a vehicle traveling behind the vehicle 100 rear-ends the trailer 200, the housing 10 can be protected by the wheels (e.g., tires) of the trailer 200, and damage to the housing 10 can be suppressed.

[0091] In addition, the center of gravity G of the fuel cell system 1 (housing 10) is disposed at a position closer to the vehicle 100 side than the axle of the trailer 200 (refer to the imaginary line L2). Thus, the center of gravity G is disposed closer to the center of the moving body 300 in the front-rear direction, and therefore the stability of the moving body 300 during movement can be improved.

[0092] In addition, Figure 9A , Figure 9B and Figures 10A to 10D The moving body 300 representing other examples, specifically, Figure 9A is a perspective top view of the moving body, Figure 9B is a side view of the moving body. In addition, Figure 10A is an enlarged view of the connecting portion 310, Figure 10B is a rear view of the trailer 200, Figure 10C is a front view of the trailer 200 with the loading and unloading portion 210 exposed, Figure 10D is a front view of the trailer 200 with the cover member 220 installed.

[0093] In Figure 9A , Figure 9B and Figures 10A to 10D In the examples shown, in addition to having a space for mounting the fuel cell system 1 (housing 10) (hereinafter, also referred to as a mounting space), the trailer 200 also has a staying space S where a person can stay. In the trailer 200, the mounting space and the staying space S are partitioned by a plate or the like to form independent spaces respectively. That is, the housing 10 (fuel cell system 1) is disposed outside the staying space S in the trailer 200. Thus, an improvement in the habitability of the staying space S can be achieved.

[0094] In addition, in Figure 9A , Figure 9B and Figures 10A to 10D In the examples shown, a connecting portion 310 (refer to Figure 10A ) and a loading and unloading portion 210 (refer to Figure 10C ) are provided on the front surface portion of the trailer 200. Here, the front surface portion of the trailer 200 is the side surface portion of the trailer 200 that faces the vehicle 100 when the trailer 200 is towed by the vehicle 100.

[0095] The trailer 200 is mechanically connected to the vehicle 100 via the connecting portion 310 and is thus towed by the vehicle 100. In addition, a connection cable 320 (see Figure 11 ) that electrically connects the fuel cell system 1 mounted on the trailer 200 to the vehicle 100 is provided to extend from the trailer 200 toward the vehicle 100 along the connecting portion 310. The connection cable 320 is configured to include, in addition to a power supply line for supplying power of the fuel cell system 1 to the vehicle 100, a signal line for communication between the fuel cell system 1 (for example, the control unit 90 described later) and the vehicle 100.

[0096] The loading and unloading portion 210 defines a mounting space and is configured to be able to mount the housing 10 from the outside. For example, the loading and unloading portion 210 is implemented by a plate or the like having a predetermined shape and defines a mounting space that is recessed in a substantially rectangular parallelepiped shape from the front surface portion of the trailer 200 toward the rear of the trailer 200. Moreover, the housing 10 can be inserted into the mounting space defined by the loading and unloading portion 210 from the front of the trailer 200 (i.e., the outside). By inserting the housing 10 into the mounting space, the housing 10 can be mounted on the trailer 200. Therefore, the user can easily mount the housing 10 on the trailer 200 (i.e., the moving body 300).

[0097] In addition, the loading and unloading portion 210 (mounting space) can be covered by a cover member 220 (see Figure 10D ) from the front of the trailer 200 (i.e., the vehicle 100 side) in a state where the housing 10 is mounted. Thereby, the housing 10 can be reliably mounted on the loading and unloading portion 210, and the housing 10 can be protected from foreign matters such as mud splashes and flying stones from the front generated by the movement of the moving body 300.

[0098] In addition, in the examples shown in Figure 9A , Figure 9B , and Figures 10A to 10D , a first power supply portion 230 capable of supplying power to the outside is provided on the side surface portion (for example, the left side surface portion) of the trailer 200. Moreover, the aforementioned input / output portion 19 is configured to be electrically connected to the first power supply portion 230 in a state where the housing 10 (fuel cell system 1) is mounted on the trailer 200, and the power stored in the power storage portion 50 or the power generated by the fuel cell stack 40 can be supplied to the outside via the first power supply portion 230. Thereby, even in a state where the housing 10 (fuel cell system 1) is mounted on the trailer 200, the power of the fuel cell system 1 can be easily supplied to the outside via the first power supply portion 230, and the convenience of the fuel cell system 1 can be improved.

[0099] In addition, a second power supply unit (not shown) for supplying power to the staying space S is provided inside the trailer 200. Further, the input / output unit 19 is configured to be electrically connected to the second power supply unit in a state where the housing 10 (fuel cell system 1) is mounted on the trailer 200, and can supply the power stored in the power storage unit 50 or the power generated by the fuel cell stack 40 to the inside of the staying space S via the second power supply unit. Thereby, even in a state where the housing 10 (fuel cell system 1) is mounted on the trailer 200, the power of the fuel cell system 1 can be supplied to the devices (such as the electronic device 150) in the staying space S via the second power supply unit, and the convenience of the fuel cell system 1 can be improved.

[0100] In addition, the input / output unit 19 may be electrically connected to at least one of the vehicle 100 and the first power supply unit 230 and the second power supply unit in a state where the housing 10 is mounted on the trailer 200. Further, the input / output unit 19 may be configured to be able to supply the power stored in the power storage unit 50 or the power generated by the fuel cell stack 40 to at least one of the connected vehicle 100 and the first power supply unit 230 and the second power supply unit. Thereby, in the devices connected to the vehicle 100 or the first power supply unit 230 and the devices connected to the second power supply unit, the power of the fuel cell system 1 can be used simultaneously, and the convenience of the fuel cell system 1 can be further improved.

[0101] In addition, a storage unit (not shown) may be further provided inside the housing 10, and the storage unit stores the generated water generated by the power generation of the fuel cell stack 40 and can supply the stored generated water to the trailer 200. Thereby, the water generated as a by-product during the power generation of the fuel cell stack 40 can be used in the trailer 200. In addition, the storage unit may be connected to a pipeline (not shown) connected to the staying space S, and the stored generated water can be supplied to the staying space S via the pipeline. Thereby, water can be supplied to the staying space S where people stay, and the convenience of the users staying in the staying space S can be realized.

[0102] In addition, the above storage unit may condense the water vapor generated by the power generation of the fuel cell stack 40 into water droplets, recover and purify the water droplets, and supply the purified water as the generated water to the trailer 200 (staying space S). Thereby, clean and user-friendly water can be supplied, and the convenience of the users staying in the staying space S can be realized.

[0103] (Functional Structure of the Mobile Body)

[0104] Next, Figure 11 an example of the functional structure of the mobile body 300 will be described. As Figure 11As shown, the fuel cell system 1 of the trailer 200 mounted on the moving body 300 further includes a control unit 90 in addition to the aforementioned hydrogen storage unit 30, fuel cell stack 40, power storage unit 50, and input / output unit 19.

[0105] The control unit 90 is realized, for example, by an electronic control unit (ECU: Electronic Control Unit) and is provided in the aforementioned control unit 60. The electronic control unit includes a processor that performs various operations, a storage device that stores various information, an input / output device that controls the input / output of data inside and outside the control unit 90, and so on. As Figure 11 shown by the dashed arrow in, the control unit 90 can not only control the power generation of the fuel cell stack 40 and the charge and discharge of the power storage unit 50, but also communicate with the vehicle 100 via the connection cable 320.

[0106] Here, the vehicle 100 is a hybrid electric vehicle or an electric vehicle, etc., and includes a drive device 110 realized by a drive motor or the like that drives according to power supply, and a battery 120 that can supply power to the drive device 110. Moreover, the vehicle 100 can travel by being driven by the drive device 110. In addition, the vehicle 100 derives the remaining amount of the battery 120 (for example, State Of Charge, i.e., SOC: charge state) based on the output of the battery 120 detected by a battery sensor (not shown), and sends the remaining amount information indicating the derived remaining amount of the battery 120 to the control unit 90 via the connection cable 320.

[0107] The control unit 90 controls the power supply from the fuel cell system 1 to the vehicle 100 based on the remaining amount information obtained from the vehicle 100. Thus, even when the remaining amount of the battery 120 becomes small, the power required in the vehicle 100 can be ensured by the power of the fuel cell system 1. Therefore, the convenience of the vehicle 100 can be improved.

[0108] For example, when the control unit 90 detects that the remaining amount of the battery 120 is below the threshold based on the remaining amount information obtained from the vehicle 100, it starts to supply power from the fuel cell system 1 to the battery 120. Thus, when the power of the battery 120 decreases as the vehicle 100 travels, the power of the fuel cell system 1 can be supplied to the battery 120 to charge the battery 120. Therefore, the travelable distance of the vehicle 100 based on the power of the battery 120 can be extended.

[0109] In addition, when the control unit 90 detects that the remaining amount of the battery 120 is below the threshold based on the remaining amount information obtained from the vehicle 100, the control unit 90 may start supplying power from the fuel cell system 1 to the drive device 110. That is, the control unit 90 may directly supply power from the fuel cell system 1 to the drive device 110. Thereby, even if the remaining amount of the battery 120 becomes less, the power required for the drive device 110 (for example, the power for the drive device 110 to drive the vehicle 100) can be ensured by the power of the fuel cell system 1.

[0110] When supplying power from the fuel cell system 1 to the vehicle 100, the control unit 90 first supplies the power of the power storage unit 50 to the vehicle 100. For example, the power supplied to the power storage unit 50 of the vehicle 100 is supplied to the drive device 110 for driving. That is, the control unit 90 may also supply the power of the power storage unit 50 to the drive device 110 when starting to supply power to the vehicle 100. Thereby, the power required for the drive device 110 can be ensured by the power of the power storage unit 50. In addition, on the basis of supplying power to the drive device 110, when there is remaining power in the power that the power storage unit 50 can output, the control unit 90 may also supply the remaining power to the battery 120 to charge the battery 120. Thereby, charging the battery 120 with the power of the power storage unit 50 can extend the driving distance of the vehicle 100 based on the power of the battery 120. In addition, the power of the power storage unit 50 is supplied to the vehicle 100 via the input / output unit 19 and the connection cable 320.

[0111] After that, when the remaining amount of the power storage unit 50 is below a specified threshold, the control unit 90 causes the fuel cell stack 40 to start generating power. Thereby, even after the remaining amount of the power storage unit 50 becomes less, the power supply to the vehicle 100 can continue with the power generated by the fuel cell stack 40.

[0112] In addition, the control unit 90 supplies the power generated by the fuel cell stack 40 in accordance with a specified priority order. Specifically, when it is necessary to supply the power generated by the fuel cell stack 40 to the drive device 110 to maintain the driving of the vehicle 100, the control unit 90 first supplies power to the drive device 110 with the highest priority. Thereby, the power required for the drive device 110 can be ensured by the power generated by the fuel cell stack 40.

[0113] Moreover, on the basis of supplying power to the drive device 110, only when there is surplus power, the control unit 90 supplies the power generated by the fuel cell stack 40 to the battery 120 and the power storage unit 50. At this time, compared with the power storage unit 50, the control unit 90 preferentially supplies power to the battery 120. That is, the control unit 90 first charges the battery 120, and when the remaining amount of the battery 120 reaches a specified value (for example, fully charged state) or the battery 120 finishes charging, it charges the power storage unit 50. Thereby, the charging of the battery 120 can be carried out at an early stage. Therefore, the travelable distance of the vehicle 100 based on the power of the battery 120, that is, the travelable distance of the vehicle 100 alone, can be restored at an early stage, and the convenience of the user of the vehicle 100 can be improved.

[0114] Alternatively, after the charging of the power storage unit 50 and the battery 120 is completed by the power generated by the fuel cell stack 40, that is, even after the remaining amounts of the power storage unit 50 and the battery 120 reach the specified values, the control unit 90 may continue to generate power by the fuel cell stack 40 and supply the generated power to the drive device 110. Thereby, the driving of the drive device 110 can be maintained without consuming the power of the battery 120. Therefore, both the travelable distance of the vehicle 100 based on the power of the battery 120, that is, the travelable distance of the vehicle 100 alone, can be maintained, and the vehicle 100 can travel, and the convenience of the user of the vehicle 100 can be improved.

[0115] In addition, when the hydrogen in the hydrogen storage unit 30 is exhausted as a result of the control unit 90 continuing to generate power by the fuel cell stack 40, the control unit 90 may then supply the power of the power storage unit 50 to the drive device 110. Thereby, the driving of the drive device 110 to drive the vehicle 100 can be maintained without consuming the power of the battery 120. Therefore, both the travelable distance of the vehicle 100 based on the power of the battery 120, that is, the travelable distance of the vehicle 100 alone, can be maintained, and the vehicle 100 can travel, and the convenience of the user of the vehicle 100 can be improved.

[0116] Alternatively, for example, when the ignition power supply of the vehicle 100 (the power supply for driving the drive device 110, hereinafter also referred to as the IG power supply) is turned off, the control unit 90 stops the fuel cell stack 40 from generating power. Thereby, when the driving of the vehicle 100 by the drive device 110 ends, the power generation of the fuel cell stack 40 is stopped, and the consumption of hydrogen can be suppressed.

[0117] In addition, after the control unit 90 stops the fuel cell stack 40 from generating power, when the remaining amount of the power storage unit 50 is below the threshold value, the control unit 90 may start the fuel cell stack 40 to generate power again and charge the power storage unit 50. Thereby, after the power generation of the fuel cell stack 40 is temporarily stopped, if the power of the power storage unit 50 becomes less, the fuel cell stack 40 is also started to generate power again, and the power storage unit 50 can be charged.

[0118] (Control Method of Fuel Cell System)

[0119] Next, with reference to Figure 12 An example of the control method of the fuel cell system 1 will be described. This control method can be implemented, for example, by a processor of an ECU of the control unit 90 executing a program prestored in a storage device or the like.

[0120] At a prescribed timing including during the movement of the moving body 300 (i.e., while the vehicle 100 is traveling), the control unit 90 acquires margin information indicating the margin of the battery 120 from the vehicle 100 (step S1). Then, based on the acquired margin information, the control unit 90 determines whether the margin of the battery 120 is below a threshold value (step S2). When the margin of the battery 120 is sufficient (step S2: No), the control unit 90 returns to step S1.

[0121] On the other hand, if the margin of the battery 120 is below the threshold value (step S2: Yes), the control unit 90 starts supplying power from the power storage unit 50 to the vehicle 100 (step S3). Then, the control unit 90 determines whether the margin of the power storage unit 50 is below the threshold value (step S4). When the margin of the power storage unit 50 is sufficient (step S4: No), the control unit 90 continues to supply power from the power storage unit 50 to the vehicle 100.

[0122] On the other hand, when the margin of the power storage unit 50 is below the threshold value (step S4: Yes), the control unit 90 starts generating power by the fuel cell stack 40 (step S5). Then, the control unit 90 supplies the power generated by the fuel cell stack 40 to the drive device 110, the battery 120, and the power storage unit 50 (step S6). At this time, as described above, the control unit 90 preferentially supplies the power generated by the fuel cell stack 40 in the order of drive device 110 > battery 120 > power storage unit 50.

[0123] Next, the control unit 90 determines whether the IG power supply of the vehicle 100 is turned off or whether the margin of the power storage unit 50 is above a prescribed value (for example, the power storage unit 50 is in a fully charged state) (step S7). If a negative determination is made in step S7 (step S7: No), the control unit 90 returns to step S6. In this case, the fuel cell stack 40 continues to generate power. On the other hand, when an affirmative determination is made in step S7 (step S7: Yes), the control unit 90 stops the power generation of the fuel cell stack 40 (step S8) and ends a series of processes.

[0124] In addition, as described above, after stopping the power generation of the fuel cell stack 40, the control unit 90 can also cause the fuel cell stack 40 to start generating power again when the margin of the power storage unit 50 is below the threshold value, and charge the power storage unit 50 with the power generated by the fuel cell stack 40, etc.

[0125] (Specific power supply example based on a fuel cell system)

[0126] Next, with reference to Figure 13 a specific power supply example of the fuel cell system 1 will be described.

[0127] In the following Figure 13 description, for parts that are the same as those in the above Figure 11 description, the same reference numerals are used, and the description of their content is appropriately omitted.

[0128] In Figure 13 the example shown, the fuel cell system 1 is mounted on a trailer 200 towed by a vehicle 100 and is electrically connected to the vehicle 100. That is, the fuel cell system 1 can supply power to the vehicle 100.

[0129] In addition, Figure 13 (a) of Figure 13 Figure 13 Figure 13

[0130] Figure 13

[0131] In Figure 13 the period from time t0 to time t1 shown, the vehicle 100 travels by supplying the power of the battery 120 to the drive device 110. Therefore, during this period, the remaining amount of the battery 120 gradually decreases.

[0131] In Figure 13 the time t1 shown, the remaining amount of the battery 120 reaches the threshold Th. Here, the threshold Th is a threshold that becomes a condition for starting to supply power from the fuel cell system 1 to the vehicle 100. In addition, although not shown in the figure, at time t1, the remaining amount (not shown) of the power storage unit 50 of the fuel cell system 1 is also below the threshold.

[0132] In this case, the control unit 90 causes the fuel cell stack 40 to generate power from time t1 and supplies the power generated by the fuel cell stack 40 to the vehicle 100. The power generated by the fuel cell stack 40 and supplied to the vehicle 100 is used for driving the drive device 110 (i.e., traveling of the vehicle 100) and charging the battery 120.

[0133] Moreover, at time t2 after time t1, the remaining amount of the battery 120 is equal to or greater than a specified value (for example, the SOC of the battery 120 is 100 [%]), and the charging of the battery 120 is completed. However, for example, before a specified time t3, after time t2, the control unit 90 also continues to generate power from the fuel cell stack 40 and supply the power generated by the power generation to the vehicle 100. Thus, before time t3, the vehicle 100 can be driven while maintaining the remaining amount of the battery 120. Here, time t3 is, for example, the time when the electrical connection between the fuel cell system 1 and the vehicle 100 is released. In addition, time t3 can be the time when the remaining amount of hydrogen stored in the hydrogen storage unit 30 is equal to or less than a threshold value. After such a time t3, the vehicle 100 is driven by supplying the power of the battery 120 to the drive device 110 again.

[0134] In addition, at time t4 between time t2 and time t3, the IG power supply of the vehicle 100 is turned off. In this case, as Figure 13 shown by the thick dashed line in, the control unit 90 causes the fuel cell stack 40 to end power generation at time t4. Moreover, in this case, if the IG power supply of the vehicle 100 is turned on later, the power of the battery 120 is supplied to the drive device 110, and thus the vehicle 100 travels.

[0135] As described above, one embodiment of the present invention has been described with reference to the accompanying drawings, but the present invention is of course not limited to the above-described embodiment. Obviously, those skilled in the art can conceive of various modification examples or correction examples within the scope described in the technical solution, and these modification examples or correction examples also of course belong to the technical scope of the present invention. In addition, within the scope not departing from the gist of the invention, the respective components in the above-described embodiment can be arbitrarily combined.

[0136] In addition, at least the following matters are described in this specification. And although the corresponding components, etc. in the above-described embodiment are shown in parentheses, the present invention is not limited thereto.

[0137] (1) A housing (housing 10) that houses a fuel cell system (fuel cell system 1), the fuel cell system including:

[0138] A hydrogen storage unit (hydrogen storage unit 30) that stores hydrogen;

[0139] A fuel cell stack (fuel cell stack 40) that generates power using hydrogen supplied from the hydrogen storage unit;

[0140] A pipe that connects the hydrogen storage unit and the fuel cell stack; and

[0141] An electricity storage unit (electricity storage unit 50) that stores power obtained by the power generation of the fuel cell stack or supply from the outside, where

[0142] In at least one of the side surfaces of the housing and the upper surface portion of the housing, vent holes (vent holes 14 and 16) capable of ventilating the inside and outside of the housing are provided.

[0143] The housing is provided with air supply devices (air supply devices 21 and 22), and the air supply devices discharge the air taken in from one of the vent holes in the upper surface portion and the vent holes in the side surface portion from the other vent hole.

[0144] According to (1), vent holes capable of ventilating the inside and outside of the housing are provided in at least one of the side surfaces of the housing for accommodating the fuel cell system and the upper surface portion, and an air supply device for discharging the air taken in from one of these vent holes from the other vent hole is provided. Therefore, the ventilation between the inside and outside of the housing is improved, and even if hydrogen is generated inside the housing, the hydrogen can be quickly discharged to the outside of the housing. Thus, the inflow of the hydrogen to the power storage unit side inside the housing can be suppressed. Thereby, the safety of the fuel cell system can be improved.

[0145] (2) The housing according to (1), wherein,

[0146] The air supply device is provided at a position opposed to the vent hole in the upper surface portion.

[0147] According to (2), since the air supply device is provided at a position opposed to the vent hole in the upper surface portion, hydrogen that is lighter than air and rises inside the housing can be quickly discharged to the outside of the housing from the vent hole in the upper surface portion.

[0148] (3) The housing according to (1) or (2), wherein,

[0149] The vent hole in the upper surface portion and the vent hole in the side surface portion are provided at positions corresponding to the side (side 18) connecting the upper surface portion and the side surface portion.

[0150] According to (3), the strength of the housing can be maintained, and the ventilation between the inside and outside of the housing can be ensured.

[0151] (4) The housing according to any one of (1) to (3), wherein,

[0152] The hydrogen storage portion is provided at a position that overlaps the vent hole in the upper surface portion when the housing is viewed from above, and is provided at a position that overlaps the vent hole in the side surface portion when the housing is viewed from the side.

[0153] According to (4), the hydrogen released to the periphery of the hydrogen storage portion can be quickly discharged to the outside of the housing.

[0154] (5) The housing according to any one of (1) to (4),

[0155] It also includes an input / output unit (input / output unit 19) for inputting and outputting power between the fuel cell system and the outside.

[0156] The input / output unit is provided below the ventilation hole on the side surface portion.

[0157] According to (5), it is possible to simultaneously ensure the accessibility of the user to the input / output unit and the ventilation of the ventilation hole on the side surface portion.

[0158] (6) The housing according to (5), wherein

[0159] The housing is mounted on the towed part (trailer 200) of a moving body (moving body 300) having a towing part (vehicle 100) and a towed part towed by the towing part, and in a state of being mounted on the towed part, the side surface portion provided with the input / output unit is arranged facing the towing part side.

[0160] According to (6), it is possible to shorten the wiring distance between the towing part and the fuel cell system and easily electrically connect the two.

[0161] (7) The housing according to (6), wherein

[0162] In a state of being mounted on the towed part, the housing is arranged at a position closer to the towing part side than the rear end portion (imaginary line L1) of the wheel provided in the towed part.

[0163] According to (7), when a rear-end collision occurs to the towed part, it is possible to protect the housing by the wheel of the towed part and suppress damage to the housing.

[0164] (8) The housing according to (6) or (7), wherein

[0165] In a state of being mounted on the towed part, the center of gravity of the housing is arranged at a position closer to the towing part side than the axle (imaginary line L2) provided in the towed part.

[0166] According to (8), it is possible to improve the stability of the moving body during movement.

[0167] (9) The housing according to any one of (6) to (8), wherein

[0168] A loading / unloading part (loading / unloading part 210) capable of externally mounting the housing is provided in the towed part,

[0169] The housing is mounted on the towed part by being installed in the loading / unloading part.

[0170] According to (9), the housing (fuel cell system) can be easily mounted on the towed part.

[0171] (10) The housing according to (9), wherein

[0172] The loading and unloading part is provided on the side surface of the towed part that faces the towing part.

[0173] The housing is mounted on the loading and unloading part from the side of the towing part.

[0174] According to (10), the housing (fuel cell system) can be easily mounted on the towed part.

[0175] (11) The housing according to (9) or (10), wherein

[0176] The housing is mounted on the loading and unloading part via a cover member (cover member 220) that covers the loading and unloading part.

[0177] According to (11), the housing can be more reliably mounted on the loading and unloading part.

[0178] (12) The housing according to (11), wherein

[0179] The housing is mounted on the loading and unloading part from the side of the towing part via the cover member that covers the loading and unloading part.

[0180] According to (12), the housing can be protected from foreign matters such as splashed mud and flying stones from the front generated by the movement of the moving body.

[0181] (13) The housing according to any one of (6) to (12), wherein

[0182] A first power supply part (first power supply part 230) capable of supplying power to the outside of the towed part is provided on the towed part.

[0183] The input / output part is configured to be electrically connected to the first power supply part in a state where the housing is mounted on the towed part, and can supply the power stored in the power storage part or the power generated by the fuel cell stack to the outside via the first power supply part.

[0184] According to (13), even in a state where the housing (fuel cell system) is mounted on the towed part, the power of the fuel cell system can be easily supplied to the outside via the first power supply part, and the convenience of the fuel cell system can be improved.

[0185] (14) The housing according to any one of (9) to (13), wherein

[0186] A staying space (staying space S) where people can stay is provided in the towed part.

[0187] The housing is arranged outside the staying space in the towed part.

[0188] According to (14), it is possible to improve the livability of the staying space.

[0189] (15) The housing according to (14), wherein

[0190] A first power supply unit capable of supplying power to the outside of the towed part and a second power supply unit capable of supplying power to the inside of the staying space are provided in the towed part.

[0191] In a state where the housing is mounted on the towed part, the input / output unit is electrically connected to at least one of the towing part and the first power supply unit, and the second power supply unit. The input / output unit is configured to be able to supply the power stored in the power storage unit or the power generated by the fuel cell stack to at least one of the connected towing part and the first power supply unit, and the second power supply unit.

[0192] According to (15), in the devices connected to the towing part or the first power supply unit and the devices connected to the second power supply unit, the power of the fuel cell system can be used simultaneously, and the convenience of the fuel cell system can be further improved.

[0193] (16) The housing according to any one of (6) to (15), wherein

[0194] The housing further includes a storage unit that stores the generated water generated by the power generation of the fuel cell stack and can supply the stored generated water to the towed part.

[0195] According to (16), the water generated as a by-product during the power generation of the fuel cell stack can be used in the towed part.

[0196] (17) The housing according to (16), wherein

[0197] A staying space where people can stay is provided in the towed part.

[0198] The storage unit is connected to a pipeline for using the generated water in the staying space.

[0199] According to (17), water can be supplied to the staying space where people stay, and the convenience of the users staying in the staying space can be improved.

[0200] (18) The housing according to (17), wherein

[0201] The storage unit turns the water vapor generated by power generation of the fuel cell stack into water droplets, recovers and purifies the water droplets, and supplies the purified water as the generated water to the towed unit.

[0202] According to (18), it is possible to supply clean water that is convenient for users to use, and it is possible to improve the convenience of users staying in the staying space.

Claims

1. A housing that houses a fuel cell system, the fuel cell system including: A hydrogen storage unit that stores hydrogen; A fuel cell stack that generates electricity using hydrogen supplied from the hydrogen storage unit; Piping that connects the hydrogen storage unit and the fuel cell stack; and A power storage unit that stores power obtained by the power generation of the fuel cell stack or supplied from the outside, wherein Ventilation holes that enable ventilation between the inside and outside of the housing are provided in at least one of the side surfaces of the housing and the upper surface portion of the housing, The housing is provided with a gas supply device that discharges air taken in from one of the ventilation holes in the upper surface portion and the ventilation holes in the side surface portion from the other ventilation hole, Inside the housing, The hydrogen storage unit, the fuel cell stack, and the piping are provided at a position higher than the upper surface portion of the power storage unit, The gas supply device is provided at a position facing the ventilation hole in the upper surface portion and higher than the hydrogen storage unit, the fuel cell stack, and the piping, The hydrogen storage unit is provided at a position that overlaps the ventilation hole in the upper surface portion when the housing is viewed from above and at a position that overlaps the ventilation hole in the side surface portion when the housing is viewed from the side.

2. The housing according to claim 1, wherein The ventilation hole in the upper surface portion and the ventilation hole in the side surface portion are provided at positions corresponding to the edges connecting the upper surface portion and the side surface portion.

3. The housing according to claim 1 or 2, Further includes an input / output unit for inputting and outputting power between the fuel cell system and the outside, The input / output unit is provided below the ventilation hole in the side surface portion.

4. The housing according to claim 3, wherein The housing is mounted on a towed portion of a moving body, the moving body having a towing portion and the towed portion towed by the towing portion, and the housing is arranged in a state of being mounted on the towed portion with the side surface portion provided with the input / output unit facing the towing portion side.

5. The housing according to claim 4, wherein The housing is arranged at a position closer to the towing portion side than the rear end portion of the wheel provided in the towed portion in a state of being mounted on the towed portion.

6. The housing according to claim 4 or 5, wherein In a state of the housing being mounted on the towed portion, the center of gravity of the housing is arranged at a position closer to the towing portion side than the axle provided in the towed portion.

7. The housing according to claim 4 or 5, wherein A loading / unloading portion capable of externally mounting the housing is provided in the towed portion, The housing is mounted on the towed portion by being installed in the loading / unloading portion.

8. The housing according to claim 7, wherein The loading / unloading portion is provided on the side surface portion of the towed portion facing the towing portion, The housing is installed in the loading / unloading portion from the towing portion side.

9. The housing according to claim 7, wherein The housing is installed in the loading / unloading portion via a cover member covering the loading / unloading portion.

10. The housing according to claim 9, wherein The housing is mounted on the loading and unloading portion via the cover member that covers the loading and unloading portion from the towing portion side.

11. The housing according to claim 4 or 5, wherein, a first power supply unit capable of supplying power to the outside of the towed portion is provided in the towed portion, the input / output unit is configured to be electrically connected to the first power supply unit in a state where the housing is mounted on the towed portion, and to be able to supply the power stored in the power storage unit or the power generated by the fuel cell stack to the outside via the first power supply unit.

12. The housing according to claim 7, wherein, a staying space where a person can stay is provided in the towed portion, the housing is disposed outside the staying space in the towed portion.

13. The housing according to claim 12, wherein, a first power supply unit capable of supplying power to the outside of the towed portion and a second power supply unit capable of supplying power to the inside of the staying space are provided in the towed portion, the input / output unit is configured to be electrically connected to at least one of the towing portion and the first power supply unit and the second power supply unit in a state where the housing is mounted on the towed portion, and to be able to supply the power stored in the power storage unit or the power generated by the fuel cell stack to at least one of the connected towing portion and the first power supply unit and the second power supply unit.

14. The housing according to claim 4 or 5, wherein, the housing further includes a storage unit that stores the generated water generated by the power generation of the fuel cell stack and is capable of supplying the stored generated water to the towed portion.

15. The housing according to claim 14, wherein, a staying space where a person can stay is provided in the towed portion, the storage unit is connected to a pipeline for using the generated water in the staying space.

16. The housing according to claim 15, wherein, the storage unit turns the water vapor generated by the power generation of the fuel cell stack into water droplets, recovers and purifies the water droplets, and supplies the purified water as the generated water to the towed portion.

Images