JP2010006257A - Moving body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a damage to a gas supply pipe connected to a regulator when an automobile collides. <P>SOLUTION: In a fuel cell powered vehicle 1 having a fuel cell 10, the gas supply pipe 70 for supplying gas to the fuel cell 10, and the regulator 34 that is connected to the gas supply pipe 70 and regulates the gas supply, the gas supply pipe 70 projects from the front face of the regulator 34 on the front side of the fuel cell powered vehicle 1, and, on the front side of the regulator 34, there is provided a first opposing part 60 that is fixed to a cross member 52 and opposes the front face of the regulator 34. Lugs 60d and 80 that abut each other when the first opposing part 60 and the regulator 34 move close to each other are formed on the front face of the first opposing part 60 and the regulator 34. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a moving body having a fuel cell.

  In recent years, fuel cell vehicles equipped with a fuel cell system have attracted attention. The fuel cell system includes a fuel cell that generates electricity by electrochemically reacting a fuel gas and an oxidizing gas, a fuel gas tank, a gas supply pipe for supplying the fuel gas from the fuel gas tank to the fuel cell, and the like. For example, a regulator for adjusting the supply pressure of the fuel gas is connected to the pipe.

  For example, as shown in FIG. 7, the fuel cell 100 is often arranged in the front part of the automobile 101, and the fuel gas tank 102 is relatively large in size. It is placed under the seat of the car. Two fuel gas tanks 102 are often arranged in order to ensure sufficient fuel gas. The regulator 103 and the like are usually arranged between the fuel gas tanks 102 from the viewpoint of size or noise prevention. The gas supply pipe 104 leading from the regulator 103 to the fuel cell 100 protrudes from the front surface of the regulator 103 with the fuel cell 100 for shortening the pipe.

  By the way, for example, when another automobile collides with the rear part of the automobile 101, it is considered that the fuel gas tank 102 is pushed from the rear side, the regulator 103 moves forward, and the regulator 103 collides with the front fuel gas tank 102. It is done. At this time, the gas supply pipe 104 protruding from the front surface of the regulator 103 may be sandwiched between the regulator 103 and the fuel gas tank 102 and crushed. In particular, the fuel gas tank 102 has a high strength for storing high-pressure gas, and the rear fuel gas tank 102 may collide with the regulator 103 without being destroyed at the time of collision. In such a case, since a strong impact is applied to the regulator 103, the gas supply pipe 104 is sandwiched between the regulator 103 and the front fuel gas tank 102 and is more easily damaged. For this reason, it is necessary to install the regulator 103 and the gas tank 102 at a sufficient interval, which causes a problem that the vehicle body becomes large. In addition, the technique which protects other fuel piping is disclosed by patent documents 1-3.

JP 2005-112271 A Japanese Patent Laid-Open No. 2004-360581 Japanese Patent Laid-Open No. 2002-367637

  The present invention has been made in view of the above points, and damage to a gas supply pipe connected to a gas regulator such as a regulator when a moving body collides without making the moving body such as an automobile large. Its purpose is to suppress.

  To achieve the above object, the present invention provides a fuel cell, a gas supply pipe for supplying gas to the fuel cell, and a gas regulator connected to the gas supply pipe for adjusting the supply of gas. A gas supply pipe projects from at least one pipe connection surface of the gas regulator in the front-rear direction of the movable body, and the movable body is disposed on the pipe connection surface side of the gas regulator. And a counter member that is opposed to the pipe connection surface is provided on at least one of the counter surface of the counter member and the pipe connection surface. Protruding portions that come into contact when approaching are formed.

  According to the present invention, for example, when the gas adjusting device is moved due to a collision of another moving body, the projecting portion comes into contact, so that the gas supply pipe is a member in the moving direction of the gas adjusting device and the gas adjusting device. It is possible to suppress damage to the gas supply pipe at the time of collision of the moving body without being crushed between them and without enlarging the moving body.

  The opposing member forms a space through which the gas supply pipe passes between the opposing surface and the pipe connection surface, and the projecting portion is applied with the space remaining when the opposing member and the gas regulator are close to each other. You may make it contact. In such a case, the gas supply pipe can be suitably protected in the space between the facing member and the gas regulator.

  The protrusion may be formed on the facing surface and the pipe connection surface. In this case, since the protrusion length of each protrusion can be shortened, for example, the high strength of the protrusion can be ensured. As a result, the deformation of the projecting portion at the time of collision is suppressed, and a space for protecting the gas supply pipe is sufficiently secured, so that damage to the gas supply pipe can be more sufficiently suppressed.

  The opposing member is formed in a plate shape, and the distal end surface of the projecting portion of the pipe connection surface is formed larger than the distal end surface of the projecting portion of the opposing member, and the distal end of the projecting portion of the opposing member at the time of contact You may make it the whole surface contact | abut to the front end surface of the protrusion part of the said piping connection surface. When the opposing member is formed in a plate shape, if the distal end surface of the protruding portion of the pipe connection surface is smaller than the distal end surface of the protruding portion of the opposing member, the protruding portion on the piping connection surface side becomes a plate-like opposing member. There is a possibility of sinking into the protrusions. In the present invention, the front end surface of the projecting portion of the pipe connection surface is larger than the front end surface of the projecting portion of the opposing member, and the entire front end surface of the projecting portion of the opposing member is in contact with the front end surface of the projecting portion of the pipe connecting surface. Since it abuts, the strength of the projecting portion on the opposing member side is improved and a space for protecting the gas supply pipe is sufficiently secured, so that damage to the gas supply pipe at the time of collision can be more sufficiently suppressed.

  The opposing member may connect the fixed portion of the moving body and the gas adjusting device, and fix the gas adjusting device to the fixing portion.

  The gas regulator may be a gas pressure regulator that regulates the supply pressure of the gas.

  The moving body described above may include a gas tank in which the gas supplied to the gas supply pipe is stored, and the gas adjusting device may be disposed adjacent to either the front or rear of the gas tank.

  A plurality of the gas tanks may be arranged side by side in the front-rear direction of the moving body, and the gas adjusting device may be disposed between the gas tanks.

  ADVANTAGE OF THE INVENTION According to this invention, the damage of gas supply piping at the time of a mobile body colliding can be suppressed.

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

  First, the structure of the fuel cell system 1 mounted on the fuel cell vehicle as the moving body according to the present embodiment will be described.

  As shown in FIG. 1, a fuel cell system 1 includes a fuel cell 10 that generates power upon receiving supply of reaction gases (oxidizing gas and fuel gas), and an oxidizing gas that supplies oxidizing gas (for example, air) to the fuel cell 10. A piping system 11, a hydrogen gas piping system 12 that supplies hydrogen gas as fuel gas to the fuel cell 10, a control device 13 that integrally controls the entire system, and the like are provided.

  The fuel cell 10 has a stack structure in which a required number of unit cells that generate power upon receiving a reaction gas are stacked. The fuel cell 10 is provided with a current sensor 10a for detecting a current during power generation.

  The oxidizing gas piping system 11 includes a humidifier 20, a supply channel 21 that supplies the oxidizing gas humidified by the humidifier 20 to the fuel cell 10, and a discharge that sends the oxidizing off-gas discharged from the fuel cell 10 to the humidifier 20. A flow path 22 and an exhaust flow path 23 for discharging the oxidizing off gas of the humidifier 20 to the outside are provided. The supply passage 21 is provided with a compressor 24 that takes in the oxidizing gas in the atmosphere and pumps it to the humidifier 20.

  The hydrogen gas piping system 12 includes a hydrogen tank 30 as a gas tank storing high-pressure (for example, 70 MPa) hydrogen gas, a supply passage 31 for supplying the hydrogen gas in the hydrogen tank 30 to the fuel cell 10, and the fuel cell 10. A circulation channel 32 for returning the hydrogen off gas discharged from the gas to the supply channel 31 is provided.

  The supply flow path 31 functions as a main valve of the hydrogen tank 30, and has a shut-off valve 33 that shuts off or allows the supply of hydrogen gas from the hydrogen tank 30 to the fuel cell 10 side, and a hydrogen gas pressure that has been preset. A regulator 34 is provided as a gas adjusting device for reducing the pressure to the next pressure, and an injector 35 for adjusting the flow rate and gas pressure of hydrogen gas supplied to the fuel cell 10 side with high accuracy.

  The circulation flow path 32 is provided with a gas-liquid separator 36 that recovers moisture from the hydrogen off gas, and a hydrogen pump 37 that pressurizes the hydrogen off gas in the circulation flow path 32 and feeds it to the supply flow path 31 side. The gas-liquid separator 36 is connected to a discharge flow path 38 that discharges water separated by the gas-liquid separator 36 and a part of the hydrogen off-gas to the outside. The discharge flow path 38 is provided with a discharge control valve 39 that controls the discharge of water and part of the hydrogen off-gas from the gas-liquid separator 36.

  The control device 13 is configured as a microcomputer having a CPU, ROM, and RAM therein. The CPU executes a desired calculation according to the control program, and performs various processes and controls such as opening / closing control of the injector 35. The ROM stores control programs and control data processed by the CPU. The RAM is mainly used as various work areas for control processing.

  The control device 13 detects an operation amount of an acceleration operation device (accelerator pedal or the like) provided in the vehicle, and controls information such as an acceleration request value (for example, a required power generation amount from a load device that consumes electric power such as a traction motor). In response, the operation of various devices in the system 1 is controlled. In addition to the traction motor, the load device includes a compressor 24, a hydrogen pump 37, and a motor for auxiliary devices such as a refrigerant circulation pump (not shown) necessary for operating the fuel cell 10 and a vehicle running. Actuators used in various devices (wheel control units, steering devices, suspension devices, etc.), air conditioners, lighting and audio.

  Detection information of the current sensor 10 a that detects the amount of power generated by the fuel cell 10 is input to the control device 13. In addition, detection information of a sensor that detects the pressure, temperature, flow rate, and the like of a fluid flowing through each piping system, detection information of a sensor that detects an outside air temperature, and the like are input. The control device 13 drives and controls the compressor 24, the shut-off valve 33, the regulator 34, the injector 35, and the like based on the required power generation amount and the detection information of each sensor, and controls the fuel cell 10 with the flow rate and pressure corresponding to the required power generation amount. Supply reactive gas.

  Next, the fuel cell vehicle 50 according to the present embodiment will be described. FIG. 2 is a schematic diagram showing a simplified frame structure of the fuel cell vehicle 50.

  For example, as shown in FIG. 2, the fuel cell vehicle 50 is arranged with two frames 51 extending in the front-rear direction and arranged in parallel, and in the left-right direction (Y direction in FIG. 2) perpendicular to the frame 51. A plurality of cross members 52 for connecting the two frames 51 are provided.

  The hydrogen tank 30 described above has its longitudinal direction directed in the left-right direction Y, and is fixed to both frames 51 by a belt (not shown).

  For example, the regulator 34 is disposed between the front and rear cross members 52. The regulator 34 is supported by the front and rear facing members 60 and 61 and is fixed to the front and rear cross members 52.

  The first opposing member 60 in the front (X direction in FIG. 2) is formed in a plate shape as shown in FIG. The first facing member 60 is bent downward, for example, from a first horizontal portion 60a extending horizontally rearward from the lower surface of the front cross member 52 and from a rear end portion of the first horizontal portion 60a. A vertical portion 60b extending in the direction, and a second horizontal portion 60c extending horizontally rearward from the lower end of the vertical portion 60b to reach the lower surface of the regulator 34. Thus, a space A is formed between the front surface that is the piping connection surface of the regulator 34 and the rear surface of the vertical portion 60 b that is the facing surface of the first facing member 60.

  The front portion of the first horizontal portion 60a is fixed to the lower surface of the cross member 52 by bolts 62, and the rear portion of the second horizontal portion 60c is fixed to the lower surface of the rectangular parallelepiped case 34a of the regulator 34 by bolts 63. ing.

  A protruding portion 60d that protrudes toward the regulator 34 (rear side) is formed on the upper portion of the vertical portion 60b. For example, as illustrated in FIG. 4, the protruding portion 60 d is formed across both end portions of the first facing member 60 in the left-right direction Y.

  The second horizontal portion 60c has, for example, a bifurcated rear side, and a semicircular cutout 60e is formed at the center. As shown in FIG. 3, a gas supply pipe 70 of the supply flow path 31 protrudes from the front surface of the regulator 34, and this gas supply pipe 70 extends from the space A through the notch 60 e of the first opposing member 60. It goes out downward and is then connected to the fuel cell 10 in front.

  A protrusion 80 that faces the protrusion 60 d of the first facing member 60 is formed on the upper portion of the front surface of the regulator 34. The protruding portion 80 protrudes forward from the front surface of the regulator 34 and is formed in a trapezoidal shape that tapers when viewed from the side, for example. The front end surface 80a of the projecting portion 80 is formed in, for example, a rectangular shape that is larger than the front end surface 60f of the projecting portion 60d of the first facing member 60. It is formed so as to come into contact with the distal end surface 80a. In the present embodiment, for example, both the vertical dimension and the horizontal dimension of the tip surface 80a are formed larger than the tip surface 60f.

  The second opposing member 61 on the rear side is formed in a plate shape. The second facing member 61 has a front portion fixed to the lower surface of the case 34 a of the regulator 34 by a bolt 90 and a rear portion fixed to the lower surface of the rear cross member 52 by a bolt 91.

  According to the fuel cell vehicle 50 configured as described above, for example, when another vehicle collides from behind and a large force in the forward direction acts on the regulator 34 and the regulator 34 moves forward, the regulator 34. The projecting portion 80 and the projecting portion 60 d of the first opposing member 60 come into contact with each other. As a result, a space A between the first facing member 60 and the regulator 34 is secured, and the gas supply pipe 70 may be sandwiched between the regulator 34 and the first facing member 60 and be damaged during a collision or the like. It is suppressed.

  Further, since the protrusions 80 and 60d are formed on both sides of the first facing member 60 side and the regulator 34 side, the protrusion length of each protrusion 80 and 60d can be shortened, for example, the protrusions 80 and 60d are high. Strength can be secured. As a result, the deformation of the protrusions 80 and 60d at the time of collision is suppressed, and the space A is sufficiently secured, so that damage to the gas supply pipe 70 can be more sufficiently suppressed.

  The first opposing member 60 is formed in a plate shape, and the distal end surface 80a of the projecting portion 80 of the regulator 34 is formed to be larger than the distal end surface 60f of the projecting portion 60d of the first opposing member 60. The entire front end surface 60 f of the protrusion 60 d abuts on the front end surface 80 a of the protrusion 80. In such a case, the strength of the protrusion 60d with respect to the protrusion 80 at the time of contact is improved, and the protrusion 80 does not sink into the plate-like protrusion 60d at the time of collision. Damage can be suppressed sufficiently.

  Since the first opposing member 60 connects the cross member 52 of the fuel cell automobile 50 and the regulator 34 and fixes the regulator 34 to the cross member 52, the first opposing member 60 is the fixing member of the regulator 34. As a result, damage to the gas supply pipe 70 can be suppressed with a simpler structure.

  The fuel cell vehicle 50 has the regulator 34 between the hydrogen tanks 30 having high strength, and the regulator 34 may be sandwiched between the hydrogen tanks 30 at the time of a collision. The effect of applying is great.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be made within the scope of the ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, in the above embodiment, the protruding portion 60d is formed only on the first opposing member 60 on the front side of the regulator 34. However, as shown in FIG. When protruding, the second opposing member 61 side may have the same configuration as the first opposing member 60. That is, projecting portions 80 and 61 d that project so as to abut against the regulator 34 and the second opposing member 61 are formed, and the second opposing member 61 forms a space A in which the gas supply pipe 70 is disposed. It may be. In such a case, the gas supply pipes 70 on both sides can be sufficiently protected. When the gas supply pipe 70 is only on the rear side of the regulator 34, the protrusions 80 and 61d may be formed only on the rear side.

  Moreover, in this Embodiment, although the protrusion part was formed in the both sides of the regulator 34 side and the 1st opposing member 60 side, you may form in only one side.

  In the above embodiment, the trapezoidal protrusion 80 is provided on the front surface of the regulator 34, but the bolt 63 that fastens the first opposing member 60 to the regulator 34 may be used as the protrusion 80. In such a case, for example, as shown in FIG. 6, a second vertical portion 60g extending upward from the rear end portion of the second horizontal portion 60c of the first facing member 60 is formed. The second vertical portion 60g is formed, for example, up to the vicinity of the upper portion of the front surface of the regulator 34. The first facing member 60 is fastened to the regulator 34 by a bolt 63 at a position above the second vertical portion 60g and facing the protruding portion 60d. In such a case, the protrusions 80 can be formed using the bolts 63, so that the structure can be simplified.

  Furthermore, although the above embodiment suppresses damage to the gas supply pipe 70 protruding from the regulator 34, the present invention provides damage to the gas supply pipe protruding from another gas regulating device such as the injector 35. It can also be applied when suppressing the above. Further, the present invention is not limited to the fuel cell vehicle 50 but can be applied to other mobile objects.

It is a schematic diagram which shows the outline of a structure of the fuel cell system mounted in a fuel cell vehicle. It is a schematic diagram which shows the frame structure of a fuel cell vehicle. It is a side view which shows the periphery structure of the attaching part of a regulator. It is explanatory drawing which shows the shape when it sees from the plane of a 1st opposing member. It is a side view which shows the periphery structure of the attachment part of a regulator in the case of forming a protrusion part in front and back both sides. It is a side view which shows the periphery structure of the attachment part of a regulator at the time of using a volt | bolt as a protrusion part. It is a schematic diagram of the internal structure of a fuel cell vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel cell system 30 Hydrogen tank 34 Regulator 50 Fuel cell vehicle 60 1st opposing member 60d Protrusion part 70 Gas supply piping 80 Protrusion part A space

Claims (8)

A moving body having a fuel cell, a gas supply pipe for supplying gas to the fuel cell, and a gas regulator connected to the gas supply pipe for adjusting the supply of gas,
A gas supply pipe projects from at least one pipe connection surface of the gas regulator in the front-rear direction of the moving body,
On the pipe connection surface side of the gas adjusting device, an opposing member fixed to the fixed portion of the moving body and facing the pipe connection surface is provided,
The moving body according to claim 1, wherein at least one of the facing surface of the facing member and the pipe connection surface is formed with a projecting portion that comes into contact when the facing member and the gas adjusting device come close to each other. The opposing member forms a space through which the gas supply pipe passes between the pipe connecting surface,
2. The moving body according to claim 1, wherein the projecting portion abuts in a state where the space is left when the facing member and the gas adjustment device approach each other.   The movable body according to claim 1, wherein the protrusion is formed on the facing surface and the pipe connection surface. The opposing member is formed in a plate shape,
The front end surface of the projecting portion of the pipe connection surface is formed larger than the front end surface of the projecting portion of the opposing member, and the entire front end surface of the projecting portion of the opposing member is in contact with the front end of the projecting portion of the pipe connecting surface. The moving body according to claim 3, wherein the moving body abuts on the surface.   The said opposing member connects the fixing | fixed part of the said mobile body, and the said gas adjustment apparatus, The said gas adjustment apparatus is being fixed to the said fixing | fixed part, The Claim 1 characterized by the above-mentioned. Moving body.   The moving body according to claim 1, wherein the gas adjusting device is a gas pressure adjusting device that adjusts a supply pressure of the gas. A gas tank for storing gas supplied to the gas supply pipe;
The mobile body according to claim 1, wherein the gas adjusting device is disposed adjacent to either of the front and rear of the gas tank.   The mobile body according to claim 7, wherein a plurality of the gas tanks are arranged side by side in the front-rear direction of the mobile body, and the gas adjusting device is interposed between the gas tanks.

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