JP2005231549A - On-vehicle structure of fuel cell system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve maintainability of a fuel cell system mounted under the floor of a vehicle. <P>SOLUTION: This fuel cell system is arranged inside a rectangular frame-shaped frame 47. The system is divided into three modules of a fuel cell module 41, a humidifying module 43 for mutually integrating a hydrogen humidifying device 15 and an air humidifying device 19, and a fluid control module 45 for mutually integrating a hydrogen supplying device 7, an air supplying device 13, a heat exchanger 23 and a pure water supplying device 27 to supply various fluids. Each of the modules 41, 43 and 45 is fixed to a lower surface of a vehicle main frame by a parts fixing bolt 81 via component brackets 69, 71, 73, 75, 77 and 79, and is positioned to the frame 47 by a parts positioning bolt 87. The frame 47 is fixed to the vehicle main frame via mounting tools 57, 59, 61 and 63 at four corners. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an in-vehicle structure of a fuel cell system.

For example, as described in Patent Document 1 below, a fuel cell system (power plant) that is a power generation system of a fuel cell vehicle is mounted under the vehicle floor between front and rear wheels in order to ensure collision safety and effectively use space. ing.
JP 2003-151605 A

  By the way, when the fuel cell system is unitized (various system components including the fuel cell are fixed to the case and covered with an upper lid) and mounted on the vehicle, the assemblability is improved.

  However, in this case, when servicing various system parts alone, the entire unitized fuel cell system is removed from the vehicle, and then the parts to be serviced are removed from the unit. is there.

  Therefore, an object of the present invention is to improve the maintainability of a fuel cell system mounted under a vehicle floor.

  The present invention relates to a vehicle structure of a fuel cell system in which a fuel cell system comprising various system components including a fuel cell and its auxiliary equipment is mounted under the floor of a vehicle, and a frame for individually positioning the various system components, The main feature is that the fuel cell system is arranged on the side of the fuel cell system and attached to the under floor of the vehicle, and the various system components are attached to the under floor of the vehicle.

  According to the present invention, when performing maintenance of various system components alone, it is only necessary to release the positioning state with respect to the frame for each system component and to remove it from the vehicle, and it is not necessary to remove the entire fuel cell system from the vehicle. , Improving maintainability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 5, the fuel cell system includes a fuel cell 1 that obtains electricity by chemically reacting hydrogen and oxygen, a hydrogen supply device 7 that supplies hydrogen to the fuel cell 1 from a hydrogen tank 3 through a hydrogen supply pipe 5, and , An air supply device 13 that supplies air (oxygen) from the intake port 9 to the fuel cell 1 through the intake pipe 11, a hydrogen humidifier 15 that humidifies hydrogen flowing from the hydrogen tank 3 to the hydrogen supply device 7, and an air supply device 13. An air humidifier 19 for humidifying air (oxygen) flowing from the fuel cell 1 to the fuel cell 1, a heat exchanger 23 for exchanging heat by flowing the heat generated from the fuel cell 1 through the coolant pipe 21, and a hydrogen humidifier 15 The pure water supply device 27 circulates and supplies pure water to the air humidifier 19 through the pure water pipe 25 to assist the humidification of hydrogen and oxygen, and the electric power generated by the fuel cell 1 is supplied to the drive motor 29 and the battery. A high voltage harness 33 to transmission 31, and a weak electric harness 37 for controlling the various sensors and the controller 35 are respectively provided.

  In the fuel cell system described above, the fuel cell 1, the hydrogen supply device 7, the air supply device 13, the hydrogen humidification device 15, the air humidification device 19, the heat exchange device 23, and the pure water supply device 27 are the fuel cell and its accessories. It corresponds to various system parts.

  Such a fuel cell system is here a single unit 39, and this unit 39 is divided into sub-modules in order to improve maintenance and assembly.

  The sub-modulation includes a fuel cell module 41 including the fuel cell 1, a humidifying module 43 in which the hydrogen humidifying device 15 and the air humidifying device 19 are integrated with each other, a hydrogen supplying device 7, an air supplying device 13, a heat exchanging device 23, and The pure water supply device 27 is divided into three modules of a fluid control module 45 that supplies various fluids integrated with each other.

  FIG. 1 relates to the first embodiment of the present invention, and is a perspective view showing a state in which the above-described three modules 41, 43 and 45, which are various system components, are individually positioned and fixed to a frame 47. FIG. . The frame 47 has a rectangular frame shape covering the periphery side of the unit 39 of the fuel cell system, and a single perspective view thereof is shown in FIG.

  1 and 2, the direction indicated by the arrow FR is the front side of the vehicle when the fuel cell system is mounted on the vehicle.

  The frame 47 described above includes left and right side frames 49 and 51 located on both left and right sides in the vehicle width direction, and front and rear frames 53 and 55 located on both sides in the vehicle longitudinal direction. It is a member. The hollow cross-sectional shape may be circular.

  Further, triangular attachments 57, 59, 61, 63 are provided inside the four corners of the frame 47, and together with the fuel cell system attached to the frame 47 via the attachments 57, 59, 61, 63. It is attached to the left and right vehicle main frames 65 and 67 shown in FIG.

  Among the attachments 57, 59, 61, 63, the through-holes 61 a, 59 a are respectively provided in the attachment 61 located on the vehicle rear side of the left side frame 49 and the attachment 59 located on the vehicle front side of the right side frame 51. The two stud bolts 65a, 67a provided on the lower surfaces of the corresponding positions of the vehicle main frames 65, 67 are inserted into the through holes 61a, 59a, respectively, and the nuts are fastened from below.

  On the other hand, among the respective attachments 57, 59, 61, 63, the attachments 57 located on the vehicle front side of the left side frame 49 and the attachments 63 located on the vehicle rear side of the right side frame 51 are also respectively provided with the through holes 57a, 63a is provided, and bolts 68 are inserted into the through holes 57a and 63a from below, and fastened to the corresponding screw holes 65b and 67b provided in the vehicle main frames 65 and 67. As a result, the frame 47 is fixed to the vehicle main frames 65 and 67 under the vehicle floor.

  Further, the unit 39 of the fuel cell system arranged inside the frame 47 described above attaches the fuel cell module 41 to the vehicle main frames 65 and 67 via the left and right component brackets 69 and 71, and the humidification module. 43 is attached via left and right component brackets 73 and 75, and the fluid control module 45 is attached via left and right component brackets 77 and 79.

  Since the above-described component brackets 69, 71, 73, 75, 77, 79 have the same basic structure, the component bracket for mounting the fuel cell module 41 shown in FIG. The attachment structure according to 69 will be described as a representative. In FIG. 4, reference numeral 80 denotes a vehicle floor panel to which the vehicle main frames 65 and 67 are attached.

  The component bracket 69 has a vehicle fixing portion 69a that is fixed to the lower surface of the vehicle main frame 65 by a component fixing bolt 81 and a component fixing portion 69b that is fixed to the side surface of the fuel cell module 41 by a bracket fixing bolt 83 as a whole. It has an L shape, and a reinforcing portion 69c is provided between the vehicle fixing portion 69a and the component fixing portion 69b.

  The component fixing bolt 81 passes through the through hole 69d of the vehicle fixing portion 69a and the through hole 65c of the vehicle main frame 65, and is fastened to a weld nut 85 fixed to the back side thereof. On the other hand, the bracket fixing bolt 83 is passed through the through hole 69e of the component fixing portion 69b and fastened to the screw hole 41a of the fuel cell module 41.

  Further, in order to position the fuel cell module 41 inside the frame 47, a part positioning bolt 87 as a positioning tool is passed through the bolt insertion hole 48 (see FIG. 2) from the outside of the left side frame 49, The tip is further passed through the component fixing portion 69b of the component bracket 69 and fastened to a screw hole (not shown) of the fuel cell module 41.

  The component positioning bolt 87 may be provided with a screw hole in the component fixing portion 69b of the component bracket 69 and fastened to the screw hole. A positioning pin may be used as a positioning tool instead of the component positioning bolt 87.

  In the fuel cell system described above, the component brackets 69 and 71, the component brackets 73 and 75, and the component brackets 77 and 79 are respectively attached to the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45 by the bracket fixing bolt 83. After fixing, each module is positioned and fixed to the frame 47 by the component positioning bolts 87.

  Thereafter, the three modules of the fuel cell module 41, the humidification module 43 and the fluid control module 45 are connected to the vehicle main frame 65, by the component fixing bolt 81 via the component brackets 69, 71, 73, 75, 77, 79. It is fixed to the lower surface of 67. At the same time, the frame 47 is fixed to the lower surfaces of the vehicle main frames 65 and 67 via the four corner fittings 57, 59, 61 and 63 shown in FIG.

  According to the on-vehicle structure of the fuel cell system described above, when maintenance is performed on various system components, that is, the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45, The component positioning bolt 87 may be removed to release the positioning state with respect to the frame 47, and the component fixing bolt 81 may be removed and removed from the vehicle main frames 65 and 67. In this case, since it is not necessary to remove the entire unit 39 of the fuel cell system from the vehicle, maintainability is improved.

  Further, the input load from the vehicle is applied to the component brackets 69, 71, 73, 75, without passing through the frame 47, with respect to the three modules of the fuel cell module 41, the humidification module 43 and the fluid control module 45 which are various system components. Since the structure is directly added via 77 and 79, the strength and rigidity of the frame 47 disposed on the side of the fuel cell system can be reduced. As a result, the weight of the frame 47 can be reduced, and the fuel cell system support structure as a whole can be made compact, so that the limited space under the floor of the vehicle can be used effectively.

  In addition, the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45 are positioned relative to the frame 47 so that they can move relative to each other. An excessive load can be prevented.

  Further, since the frame 47 disposed on the side of the fuel cell system is attached to the vehicle main frames 65 and 67 extending in the vehicle front-rear direction, the vehicle main frames 65 and 67 receive the collision load at the time of the vehicle collision. The frame 47 can be prevented from being damaged, and the fuel cell system can be protected.

  Since the frame 47 just covers the side of the fuel cell system, the space between the vehicle floor panel 80 and each module 41, 43, 45 of the fuel cell system in the inner portion of the frame 47 is effectively utilized. it can.

  In addition, since the frame 47 only covers the side of the fuel cell system, when an under guard (under cover) is provided, the under guard can be made of a lightweight material (for example, resin), so that the weight can be reduced. The space between the under guard and each module 41, 43, 45 can be effectively utilized.

  FIG. 6 is a cross-sectional view corresponding to FIG. 4 showing a second embodiment of the present invention. In this embodiment, a weak electric power as an electric wire shown in FIG. 5 is provided on the surface of the left side frame 49 (or the right side frame 51) of the frame 47 that faces the fuel cell system including the modules 41, 43, and 45. A recess 49a for housing the harness 37 and the piping of the fuel cell system such as the hydrogen supply piping 5 is provided.

  By making the depth of the recess 49a (the dimension in the left-right direction in FIG. 6) substantially the same as the diameter of the weak electric harness 37 and the hydrogen supply pipe 5, the low electric harness 37 and the hydrogen supply pipe 5 have the recess 49a. The amount of projection outward from the outer shape of the frame 47 of FIG. 4 that does not have can be reduced, so that even if the weak electrical harness 37 and the hydrogen supply pipe 5 are arranged between the frame 47 and the fuel cell system, these Using the space between each other, it becomes easy to attach the modules 41, 43, 45 and the frame 47 to the vehicle. Moreover, since the frame 47 covers the outer side opposite to the fuel cell system, the weak electric harness 37 and the hydrogen supply pipe 5 can be protected against input from the outside.

  In addition, since the clip holes and bolting points for fixing the light electrical harness 37 and the hydrogen supply pipe 5 can be formed inside the frame 47, they are not visible from the outside, and the influence on the appearance quality is reduced. Can do.

  Further, since the weak electrical harness 37 and the hydrogen supply pipe 5 are arranged on the side of the fuel cell system, the attachment / detachment work can be performed from the vertical direction, and the maintainability is improved.

  FIG. 7 is a perspective view corresponding to FIG. 1, showing a third embodiment of the present invention. In this embodiment, a rectangular notch 53a as shown in FIG. 8A is provided from the top in the center of the front frame 53 in the vehicle width direction, and a pipe joint 89 is integrally fixed to the notch 53a. A fixing plate 91 as a fixing tool is fitted and fixed as shown in FIG. The pipe joint 89 is closely fixed to the fixed plate 91 and constitutes a pipe joint module 93 together with the fixed plate 91.

  The above-described fixing plate 91 is inserted into the hollow member of the front frame 53 at both sides and the lower part in the vehicle width direction, the screw 95 is inserted into the screw insertion hole 53b of the front frame 53 from the front of the vehicle, and the screw hole 91a of the fixing plate 91 is inserted. To conclude. As a result, the fixing plate 91 and the front frame 53 are in close contact with each other.

  The above-described piping joint 89 is connected to the fuel cell system inside the frame 47 and other parts outside the same while being attached to the front frame 53.

  According to the third embodiment described above, the pipe joint 89 that pipe-connects the fuel cell system and other parts on the vehicle side is fixed to the front frame 53 of the frame 47. Maintenance workability is improved when piping is connected to the inner fuel cell system.

  Further, since the pipe joint 89 is in close contact with the front frame 53 via the fixing plate 91, the fuel cell system can be protected from a phenomenon in which gravel or the like jumped up by a tire from the front of the vehicle hits the vehicle.

  FIG. 9 is a perspective view corresponding to FIG. 1, showing a fourth embodiment of the present invention. In this embodiment, a floor tunnel 99 extending in the vehicle front-rear direction is provided on the lower surface of the vehicle width direction center portion of the vehicle floor panel 80 so as to face the fuel cell system, and the floor tunnel 99 is shown in FIG. A hydrogen supply pipe 5 is arranged.

  According to the above-described fourth embodiment, the frame 47 is only on the side of the fuel cell system and is open at the top, so that the hydrogen supply pipe 5 can be easily installed in the space in the upper floor tunnel 99. The hydrogen supply pipe 5 can be protected by the floor tunnel 99 from an impact at the time of collision.

  FIG. 10 is a perspective view corresponding to FIG. 1, showing a fifth embodiment of the present invention. In this embodiment, the high-voltage harness 33 as the electric wire shown in FIG. 5 is arranged in the floor tunnel 99 in FIG. 9 instead of the hydrogen supply pipe 5.

  According to the fifth embodiment described above, since the frame 47 is only on the side of the fuel cell system and opened upward, it is easy to install the high voltage harness 33 in the upper space of the floor tunnel 99. The high-voltage harness 33 can be protected by the floor tunnel 99 from an impact at the time of collision.

  FIG. 11 is a perspective view showing the vicinity of the connecting portion between the right side frame 51 and the front frame 53 of the frame 47 according to the sixth embodiment of the present invention.

  In this embodiment, the opening at the vehicle front end portion of the right side frame 51 as a hollow member is used as an air intake 51a for taking in air outside the frame 47 having a frame shape as a whole into the hollow member, and the right side frame An air discharge port 51 b through which air taken into the hollow member is discharged to the inside of the frame 47 is provided on the inner side surface near the front frame 53 of 51.

  In addition, a ventilation fan 101 is provided on the inner surface of the right side frame 51 at a position corresponding to the air discharge port 51b described above to flow air in the hollow member from the air intake port 51a toward the air discharge port 51b.

  According to the sixth embodiment described above, even if there is an under guard (under cover) that covers the lower part of the fuel cell system portion including the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45, By driving the ventilation fan 101, outside air enters the right side frame 51 from the air intake port 51a, flows out from the air discharge port 51b to the installation space of the fuel cell system, and the fuel cell system installation space can be reliably ventilated. it can.

  FIG. 12A is a cross-sectional view corresponding to FIG. 4 showing a seventh embodiment of the present invention. FIG.12 (b) is BB sectional drawing of Fig.12 (a). In this embodiment, the plate-shaped component bracket 103 is fixed to the side surface of the fuel cell module 41 with bracket fixing bolts 83, and the support rod 105 is projected from the component bracket 103 toward the left side frame 49, and this support rod 105 Are connected to the vehicle main frame 65 via the soft mount 107.

  The soft mount 107 includes a rubber material 109 and a bracket 111 as a mount material made of an elastic material. As shown in FIG. 12B, the bracket 111 includes a rubber material collecting portion 113 for accommodating and fixing the rubber material 109 therein, and a pair of fixing flange portions 115 fixed to the vehicle main frame 65 by component fixing bolts 81. Each is provided.

  The rubber material accommodating portion 113 of the bracket 111 includes a through hole 113a into which the support rod 105 is inserted on the surface facing the fuel cell module 41, and the support rod 105 to be inserted into the through hole 113a has a distal end side thereof. The rubber material 109 is inserted and fixed in the insertion hole 109a and connected. At this time, the through hole 113 a of the rubber material accommodation portion 113 is sufficiently larger than the diameter of the support rod 105 so that the support rod 105 can swing with respect to the bracket 111.

  In this example, although not shown, the component positioning bolt 87 is used as in FIG. 4, but the component positioning bolt 87 here is fastened to the rubber material accommodation portion 113 of the bracket 111.

  According to the seventh embodiment described above, the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45 are supported on the vehicle via the soft mount portion 107. Therefore, when the fuel cell system is started at a low temperature It is possible to prevent the heater heat of components having pure water that needs to be thawed from being taken away by the metal of the vehicle main frames 65 and 67, and the low-temperature startability is improved.

  Also in the seventh embodiment, when maintenance is performed on various system components alone, that is, the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45, for each module, 12, the component positioning bolt 87 (not shown) is removed to release the positioning state with respect to the frame 47, and the component fixing bolt 81 is removed together with the soft mount portion 107 from the vehicle main frames 65 and 67. In this case, since it is not necessary to remove the entire unit 39 of the fuel cell system from the vehicle, maintainability is improved.

  When the fuel cell system is attached to the vehicle, the soft mount portion 107 is attached to each module 41, 43, 45.

  FIG. 13 is a cross-sectional view corresponding to FIG. 12A, showing an eighth embodiment of the present invention. This embodiment is a modification of the seventh embodiment, in which a part of the left side frame 49 is disposed below the rubber material accommodating portion 113 of the bracket 111 in the soft mount portion 107, and the component positioning bolt 87 is disposed on the left side. The front end of the face frame 49 is fastened to the fuel cell module 41.

  It should be noted that portions other than the soft mount portion 107 of the left side frame 49 are brought into contact with the lower surface of the vehicle main frame 65, and the vehicle main frame is attached via the attachments 57, 59, 61, 63 at the four corners as in FIG. Fix to 65.

  Further, the soft mount fixing bolt 117 in the soft mount portion 107 is passed through the rubber material housing portion 113 and the rubber material 109 of the bracket 111 and the tip thereof is fastened to the plate-shaped component bracket 103 or the fuel cell module 41. At this time, the soft mount fixing bolt 117 is fixed to the rubber material 109 so that the through hole 113a of the rubber material accommodation portion 113 is sufficiently larger than the diameter of the soft mount fixing bolt 117, and the through hole 113b is softened. It is made sufficiently larger than the head of the mount fixing bolt 117 so that the soft mount fixing bolt 117 can swing with respect to the bracket 111.

  Also in this embodiment, since the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45 are supported by the vehicle via the soft mount unit 107, the pure cell that needs to be thawed when the fuel cell system is started at a low temperature is used. It is possible to prevent the heater heat of the parts having water from being taken away by the metal of the vehicle main frames 65 and 67.

  Also in the eighth embodiment, when performing maintenance on various system components alone, that is, the three modules of the fuel cell module 41, the humidification module 43, and the fluid control module 45, for each module, The component positioning bolts 87 may be removed to release the positioning state with respect to the frame 47, and the soft mount fixing bolts 117 may be removed and removed from the vehicle main frames 65 and 67. In this case, since it is not necessary to remove the entire unit 39 of the fuel cell system from the vehicle, maintainability is improved.

  When the fuel cell system is attached to the vehicle, the soft mount portion 107 is attached to the vehicle.

  As a ninth embodiment, although not particularly shown, a sound absorbing material is filled in a hollow portion of a frame 47 that is a hollow member.

  In this case, since the sound absorbing material is provided in the frame 47, measures against noise and vibration can be taken without reducing the installation space of the fuel cell system.

  In each of the above-described embodiments, an under guard (under cover) that covers the lower portion of the fuel cell system may be provided below the frame 47.

  According to the present invention, since the various system components are provided with component brackets, and the various system components are attached to the vehicle floor via the component brackets, when performing maintenance of various system components alone, For each of the various system components, the positioning state with respect to the frame is released, and it is only necessary to remove the system from the vehicle via the component bracket, and it is not necessary to remove the entire fuel cell system from the vehicle.

  Since the various system components are positioned and fixed to the frame by a positioning tool, unitization of the entire fuel electric system is facilitated.

  Since the electric wire of the fuel cell system is arranged between the frame arranged on the side of the fuel cell system in the vehicle width direction and the various system components, the outer side of the electric wire opposite to the fuel cell system is covered with the frame. As a result, it is possible to protect against input from the outside. Moreover, since the clip hole for fixing an electric wire can be formed in the inner side of a flame | frame, these cannot be seen from the outer side and the influence which it has on external appearance quality can be reduced. Further, since the electric wires are arranged on the side of the fuel cell system, the attachment / detachment work can be performed from the vertical direction, and the maintainability is improved.

  Since the recess for accommodating the electric wire is provided on the surface of the frame facing the various system components, the amount of electric wire protruding outward from the frame can be reduced, and the electric wire is disposed between the frame and the fuel cell system. Even so, it becomes easy to attach various system parts and frames to the vehicle body using the space between them.

  The piping of the fuel cell system is arranged between the frame arranged on the side of the fuel cell system in the vehicle width direction and the various system components, so that the outer side of the piping opposite to the fuel cell system is covered with the frame. As a result, it is possible to protect against input from the outside. Moreover, since the clip hole and bolting point for fixing piping can be formed in the inside of a flame | frame, these cannot be seen from the outside and the influence which it has on external appearance quality can be reduced. In addition, since the piping is arranged on the side of the fuel cell system, the mounting and dismounting work can be performed from the vertical direction, and the maintainability is improved.

  Since the concave portion for accommodating the pipe is provided on the surface of the frame facing the various system components, the amount of pipe protruding outward from the frame can be reduced, and the pipe is arranged between the frame and the fuel cell system. Even so, it becomes easy to attach various system parts and frames to the vehicle body using the space between them.

  A pipe joint that communicates and connects the pipe of the fuel cell system inside the frame and the pipe outside the frame is integrated with a fixture to form a pipe joint module, and the pipe joint module is provided with a notch provided in the frame. Since the fixing tool is fitted and fixed to the vehicle, the maintenance workability when connecting the pipe from the vehicle to the fuel cell system inside the frame is improved.

  In addition, since the pipe joint is in close contact with the frame via a fixture, the fuel cell system can be protected from a phenomenon in which gravel or the like splashed by a tire from the front of the vehicle hits the vehicle.

  A floor tunnel is provided under the floor of the vehicle so as to face the fuel cell system, and a hydrogen supply pipe for supplying hydrogen to the fuel cell is arranged in the floor tunnel, so that the frame is located on the side of the fuel cell system. Since only the upper part is open, the hydrogen supply pipe can be easily installed in the upper space of the floor tunnel, and the hydrogen supply pipe can be protected from the impact at the time of collision by the floor tunnel.

  A floor tunnel is provided under the vehicle floor facing the fuel cell system, and the electric wires of the fuel cell system are arranged in the floor tunnel. Therefore, the frame is only on the side of the fuel cell system and the upper part is open. Therefore, the electric wire can be easily installed in the space in the upper floor tunnel, and the electric wire can be protected from an impact at the time of the collision by the floor tunnel.

  The frame is formed as a hollow member and has a frame shape covering the entire periphery of the fuel cell system. The frame is provided with an air intake port for taking air outside the frame shape into the hollow member, and the taken-in air Is provided on the inside of the frame shape, and a ventilation fan that allows air to flow from the air intake port toward the air discharge port is provided. Therefore, an under guard that covers lower parts of various system components of the fuel cell system Even if (under cover) is present, the ventilation fan can be driven to allow outside air to enter the frame and flow out of the air discharge port into the fuel cell system installation space, thereby ensuring that the fuel cell system installation space is ventilated. it can.

  Since the various system parts are mounted under the floor of the vehicle through a mounting material made of an elastic material, the heat of the heater of the parts having pure water that needs to be thawed when the fuel cell system is started at a low temperature is taken away by the metal of the vehicle. Can be prevented.

  Since the frame is a hollow member and a sound absorbing material is provided in the hollow member, noise vibration countermeasures can be taken without reducing the installation space of the fuel cell system.

It is a perspective view which shows the state which positioned the various system components concerning the 1st Embodiment of this invention to the flame | frame. It is a perspective view of the flame | frame single body shown in FIG. FIG. 2 is an exploded perspective view showing a state in which the fuel cell system of FIG. 1 is attached to a vehicle main frame under the vehicle floor. It is AA sectional drawing of FIG. 1 is an overall configuration diagram of a fuel cell system. FIG. 5 is a cross-sectional view corresponding to FIG. 4 showing a second embodiment of the present invention. It is a perspective view equivalent to FIG. 1 which shows the 3rd Embodiment of this invention. (A) is a disassembled perspective view of the principal part in 3rd Embodiment, (b) is a perspective view of the assembled state. It is a perspective view equivalent to FIG. 1 which shows the 4th Embodiment of this invention. It is a perspective view equivalent to FIG. 1 which shows the 5th Embodiment of this invention. It is a perspective view which shows the connection part vicinity of the right side surface frame and front frame concerning the 6th Embodiment of this invention. (A) is sectional drawing equivalent to FIG. 4 which shows the 7th Embodiment of this invention, (b) is BB sectional drawing of (a). It is sectional drawing equivalent to FIG. 12 (a) which shows the 8th Embodiment of this invention.

Explanation of symbols

5 Hydrogen supply piping 33 High-voltage harness (electric wire)
41 Fuel cell module (system parts)
43 Humidification module (system parts)
45 Fluid control module (system parts)
37 Light electrical harness (electric wire)
47 Frame 49a Concave part 51a Air intake port 51b Air discharge port 53a Notch 69 Part bracket 87 Part positioning bolt (positioning tool)
89 Piping joint 91 Fixing plate (fixing tool)
93 Piping joint module 99 Floor tunnel 101 Ventilation fan 109 Rubber material (elastic material, mount material)

Claims (13)

  In a vehicle-mounted structure of a fuel cell system in which a fuel cell system comprising various system parts including a fuel cell and its auxiliary equipment is mounted under the floor of a vehicle, a frame for individually positioning the various system parts is provided in the fuel cell system. An on-vehicle structure for a fuel cell system, wherein the fuel cell system is mounted on a side of the vehicle and attached to the under floor of the vehicle, and the various system components are attached to the bottom of the vehicle.   2. The on-vehicle structure of the fuel cell system according to claim 1, wherein a component bracket is provided on each of the various system components, and the various system components are attached to a vehicle floor via the component bracket. Construction.   3. The on-vehicle structure for a fuel cell system according to claim 1 or 2, wherein the various system components are positioned and fixed to the frame by a positioning tool.   The fuel cell system on-vehicle structure according to any one of claims 1 to 3, wherein the fuel cell system is disposed between a frame disposed on a side in a vehicle width direction of the fuel cell system and the various system components. An in-vehicle structure of a fuel cell system, characterized in that an electric wire is arranged.   5. The on-vehicle structure for a fuel cell system according to claim 4, wherein a recess for housing the electric wire is provided on a surface of the frame facing the various system components.   The fuel cell system on-vehicle structure according to any one of claims 1 to 3, wherein the fuel cell system is disposed between a frame disposed on a side in a vehicle width direction of the fuel cell system and the various system components. An in-vehicle structure of a fuel cell system, characterized by arranging the pipes.   The in-vehicle structure of the fuel cell system according to claim 6, wherein a recess for accommodating the pipe is provided on a surface of the frame facing the various system components.   The fuel cell system on-vehicle structure according to any one of claims 1 to 7, wherein a pipe joint that connects the pipe of the fuel cell system inside the frame and the pipe on the outside is integrated with a fixture. An in-vehicle structure for a fuel cell system, characterized in that a pipe joint module is formed, and the pipe joint module is fitted and fixed in a notch provided in the frame.   9. The on-vehicle structure of a fuel cell system according to claim 1, wherein a floor tunnel is provided under the floor of the vehicle so as to face the fuel cell system, and hydrogen is supplied to the fuel cell in the floor tunnel. An on-vehicle structure of a fuel cell system, characterized in that hydrogen supply piping for supply is arranged.   The fuel cell system on-vehicle structure according to any one of claims 1 to 8, wherein a floor tunnel is provided under the floor of the vehicle so as to face the fuel cell system, and an electric wire of the fuel cell system is provided in the floor tunnel. An on-vehicle structure for a fuel cell system, characterized in that   11. The on-vehicle structure of a fuel cell system according to claim 1, wherein the frame is a hollow member that has a frame shape that entirely covers the periphery of the fuel cell system, and the frame has a frame shape. An air intake for taking in air outside the inside of the hollow member is provided, and an air discharge port for discharging the taken-in air to the inside of the frame shape is provided, and air is directed from the air intake toward the air discharge port. An in-vehicle structure of a fuel cell system, characterized in that a ventilation fan is provided.   The fuel cell system on-vehicle structure according to any one of claims 1 to 11, wherein the various system components are attached under a vehicle floor via a mounting material made of an elastic material. In-vehicle structure. 13. The on-vehicle structure of a fuel cell system according to claim 1, wherein the frame is a hollow member, and a sound absorbing material is provided in the hollow member.

Images