JP2008260382A - Vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress deformation and damage of a member constituting an equipment mounting part when a vehicle collides to other objects in the vehicle provided with the equipment mounting part for mounting various equipments used for driving the vehicle on a floor surface part of the vehicle. <P>SOLUTION: The mounting part 100 is provided with a floor panel 12 of the vehicle; and a cover 14 fastened to a lower side of a floor panel 12, and a storage space of a fuel cell stack 110 is formed by these. Further, in the storage space of the fuel cell stack 110, the floor panel 12 is formed so as to constitute an inner wall provided with inclination such that an angle formed with a floor surface (horizontal surface) of the vehicle 10 is an acute angle and width of the storage space becomes narrow at an upper side in a vertical direction. Further, the inner wall provided with the inclination of the mounting part 100 and the fuel cell stack 110 are contacted by a surface at least a part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle, and more particularly to a technique for mounting a predetermined device used to drive a vehicle on a floor surface of the vehicle.

  An electric vehicle equipped with a fuel cell system including a fuel cell as a power source has been developed. Conventionally, various techniques for mounting various devices (for example, a fuel cell) constituting the fuel cell system on such an electric vehicle have been proposed.

  For example, in Patent Document 1 below, in a fuel cell-mounted electric vehicle, a part of various devices including a fuel cell constituting a fuel cell system is arranged below the floor of the vehicle in a predetermined order. A technique is described in which behavioral stability is improved and the fuel cell is less likely to be damaged even when the vehicle collides head-on or rear-ends from behind. In this technique, a fuel cell is accommodated in a fuel cell system box, and temperature control means and humidification means are arranged on the vehicle front side and vehicle rear side of the fuel cell in the fuel cell system box. And this fuel cell system box is arrange | positioned in the center position of the front-back direction of a vehicle.

JP 2003-182379 A

  However, in the technique described in Patent Document 1, when the impact force when the vehicle collides is unexpectedly strong, the fuel cell or the like fixed in the fuel cell system box is detached from the fixed position. Then, the fuel cell system box may collide with the inner wall of the fuel cell system box, deform the fuel cell system box, and further damage it. Such a problem is not limited to the case where the fuel cell system box is mounted under the floor (floor surface portion) of the fuel cell-equipped electric vehicle as in the technique described in Patent Document 1, and the vehicle (fuel cell mounted) This also applies to the case where various devices (including devices other than fuel cells) used for driving a vehicle other than a type electric vehicle are mounted on the floor surface of the vehicle.

  The present invention has been made in order to solve the above-described problems, and in a vehicle having a device mounting portion for mounting various devices used for driving the vehicle on the floor surface portion of the vehicle, An object is to suppress deformation and breakage of members constituting the device mounting portion when it collides with the object. The “vehicle floor surface portion” means a predetermined portion directly above the vehicle floor surface, directly below the floor surface, or at the same height as the floor surface.

  The present invention can be realized as the following forms or application examples in order to solve at least a part of the above-described problems.

  Application Example 1 A vehicle including a device mounting portion for mounting a predetermined device used for driving a vehicle on a floor surface portion of the vehicle, wherein the device mounting portion stores a storage space for storing the device. The storage space component member has an inner wall that is inclined so that an angle formed with the floor surface of the vehicle is an acute angle in the storage space. The gist of the present invention is that the device has a shape that makes contact with at least a part of an inner wall of the storage space constituting member provided with the inclination.

  The deformation or breakage of the storage space constituent member constituting the storage space for storing the equipment is due to the force acting perpendicularly to the inner wall surface of the storage space constituent member. In this application example, the inner wall of the storage space constituting member and the predetermined device are in contact with each other at the surface. For example, when an external force is applied to the vehicle in a substantially horizontal direction due to a collision with another object of the vehicle. In the contact portion between the inner wall surface and the device, an inertia force in a substantially horizontal direction (opposite to the external force) acts on the vehicle from the device to the storage space constituting member. In this application example, the storage space component member has an inner wall that is inclined so that the angle between the storage space and the vehicle floor is an acute angle. The inertial force is decomposed into a component force perpendicular to the inner wall surface and a component force horizontal to the inner wall surface. Therefore, the magnitude of the component force perpendicular to the inner wall surface is smaller than the magnitude of the inertia force. Moreover, in this application example, since the said inner wall surface and the said apparatus are contact | abutting by the surface, the force per unit area which acts on the said inner wall surface can be made small. As a result, deformation and breakage of the storage space constituting member can be suppressed. In this application example, various devices can be applied as the “predetermined device”. For example, when the vehicle is an electric vehicle, a fuel cell, a battery, a fuel tank, and the like can be given. This application example is highly effective when a relatively heavy device is applied as the “predetermined device”. This is because the inertial force is proportional to the weight of the device.

  Application Example 2 In the vehicle of Application Example 1, the slope may be provided at least on the front side of the vehicle. The vehicles collide because there are many collisions from the front. In the vehicle, the inclination may be further provided in the rear, side, or oblique direction of the vehicle. By doing so, it is possible to deal with a collision from any direction.

  Application Example 3 In the vehicle of Application Example 1 or Application Example 2, the storage space component member includes a floor panel of the vehicle and a cover fastened to the floor panel, the floor panel, and the At least one of the covers may have an inner wall provided with the slope. By doing so, the device mounting portion can be easily formed on the floor portion of the vehicle. In addition, since a member having relatively high rigidity has been applied to the floor panel of the vehicle, the cover can be obtained by applying this floor panel as a storage space constituting member having the inner wall provided with the slope. It is possible to suppress deformation and breakage of the storage space constituent member than when applying as a storage space constituent member having an inner wall provided with the above inclination.

  [Application Example 4] In the vehicle of Application Example 1 or Application Example 2, the storage space constituting member includes a floor panel of the vehicle having an inner wall provided with the slope, and a cover fastened below the floor panel. The fastening force between the floor panel and the cover is set so that the floor panel and the cover are detached when a force of a predetermined value or more acts vertically below the cover. You may be allowed to.

  In the vehicle according to any one of the application examples described above, as described above, for example, when an external force is applied to the vehicle in a substantially horizontal direction due to a collision with another object of the vehicle, the storage space component member is moved from the device. Inertial force acts on. And in the contact part of the said inner wall face and the said apparatus, the drag of the component force perpendicular | vertical with respect to the said inner wall face of this inertia force acts on the said apparatus. Since the inner wall surface is inclined so that the angle formed with the floor of the vehicle is an acute angle, this drag is generated by a horizontal component force opposite to the inertial force and a vertical downward direction. It is broken down into component forces. In this application example, the fastening force between the floor panel and the cover is set so that the floor panel and the cover are detached when a force of a predetermined value or more is applied vertically downward to the cover. Therefore, when a force of a predetermined value or more acts vertically on the cover in the event of a vehicle collision or the like, that is, when the vertical component force of the drag in the vertically downward direction exceeds a predetermined value, The device and the cover can be dropped from the vehicle body. Therefore, the safety of the vehicle occupant can be improved.

  Application Example 5 In the vehicle of any one of Application Examples 1 to 4, when an external force acts on the vehicle in a substantially horizontal direction, the force acting on the inner wall and the device is absorbed. It is preferable that a cushioning material for this purpose is interposed between the device and the inner wall. By doing so, the cushioning material can absorb the inertial force described above and further suppress deformation and breakage of the storage space constituting member.

Hereinafter, embodiments of the present invention will be described based on examples.
A. First embodiment:
A1. Vehicle configuration:
FIG. 1 is an explanatory diagram showing a schematic configuration of a vehicle as a first embodiment of the present invention. This vehicle 10 is an electric vehicle that travels by driving a motor with electric power generated by a fuel cell (a fuel cell stack 110 described later) or electric power output from the battery, and rotating wheels by the power. . The electric power generated by the fuel cell stack 110 can be stored in a battery.

  The vehicle 10 includes a mounting portion 100 for mounting the fuel cell stack 110 on the floor surface portion of the vehicle 10. As shown in the drawing, in this embodiment, the mounting portion 100 is disposed below the seat seat provided in the vehicle 10. Although not shown in the drawings, the components constituting the fuel cell system including the fuel cell stack 110, that is, a hydrogen tank, are provided in a space other than the lower floor of the vehicle 10 and the front and rear rooms of the living room. And air compressors, radiators, diluters, gas-liquid separators, various pipes, control units for controlling fuel cell systems, batteries, motors, and other electrical components. ing. The fuel cell stack 110 corresponds to a predetermined device in the present invention, and the mounting portion 100 corresponds to a device mounting portion in the present invention. Details of the mounting unit 100 will be described later.

A2. Fuel cell stack:
FIG. 2 is a perspective view showing the appearance of the fuel cell stack 110 in the first embodiment. The fuel cell stack 110 is formed by stacking a plurality of single cells 112 as shown in the figure. The number of stacked single cells 112 can be arbitrarily set according to the output required for the fuel cell stack 110.

  In the fuel cell stack 110, current collector plates and insulating plates (not shown) are arranged in this order at both ends in the stacking direction of the stack of the plurality of single cells 112, respectively. End plates 114a and 114b are arranged. The end plates 114a and 114b are made of metal such as steel in order to ensure rigidity. The current collector plate is formed of a gas impermeable conductive member such as dense carbon or copper plate. Each of the current collector plates is provided with an output terminal (not shown) so that the power generated by the fuel cell stack 110 can be output. The insulating plate is made of an insulating member such as rubber or resin.

  In the fuel cell stack 110 of the present embodiment, the end plate 114a has a hexagonal planar shape having sides S1 to S6 as shown in the figure. In this embodiment, in this hexagon, the sides S1 and S2 are parallel to each other, and the length of the upper side S1 is shorter than the length of the lower side S2. Further, the left and right sides S3 and S4 are parallel to each other and have the same length, and intersect the side S2 perpendicularly. The angle formed between the side S1 and the side S5 is the same angle as the angle formed between the side S1 and the side S6 and is an obtuse angle. The shape of the end plate 114b is the same as the shape of the end plate 114a. In this embodiment, each single cell 112 is similar to the end plates 114a and 114b and has a smaller planar shape than the end plates 114a and 114b. Therefore, the end plates 114a and 114b protrude from the outer peripheral surface of the stack of the plurality of 112 single cells 112. As will be described later, mount rubbers each having a function as a cushioning material that absorbs external shocks are respectively installed on the outer peripheral portions of the end plates 114a and 114b.

  Although illustration and detailed description are omitted, the end plate 114a includes a fuel gas supply port, a fuel gas discharge port, an oxidant gas supply port, an oxidant gas discharge port, a cooling water (not shown). A supply port and a cooling water discharge port are provided. Further, in the fuel cell stack 110, a plurality of supply manifolds for distributing and supplying hydrogen as a fuel gas, air as an oxidant gas, and cooling water to each single cell 112 are provided. A plurality of discharge manifolds are formed for collecting anode off-gas and cathode off-gas discharged from the anode and cathode of the cell 112 and cooling water, respectively, and discharging them to the outside of the fuel cell stack 110.

  In addition, the fuel cell stack 110 suppresses a decrease in cell performance due to an increase in contact resistance or the like in any part of the stack structure, or prevents leakage of gas flowing in the fuel cell stack 110 or cooling water. For this purpose, a fastening load is applied in the stacking direction of the stack structure, and the fastening structure is fastened by a fastening member (not shown).

A3. Mounting structure:
FIG. 3 is an explanatory diagram showing a schematic structure of the mounting portion 100 in the first embodiment. FIG. 3A shows a cross-sectional view (A-A cross-sectional view in FIG. 3B) when the mounting portion 100 is viewed from the left side of the vehicle 10. In FIG. 3A, the left side is the front of the vehicle 10, the right side is the rear of the vehicle 10, the upper side is the upper side of the vehicle 10, and the lower side is the lower side of the vehicle 10. FIG. 3B is a cross-sectional view (BB cross-sectional view in FIG. 3A) when the mounting portion 100 is viewed from above the vehicle 10. In FIG. 3B, the left side is the front of the vehicle 10, the right side is the rear of the vehicle 10, the upper side is the right side of the vehicle 10, and the lower side is the left side of the vehicle 10.

  Here, it is shown that the fuel cell stack 110 in which the mount rubbers 116a and 116b are respectively installed on the outer peripheral portions of the end plates 114a and 114b is housed in the internal space (housing space) of the mounting portion 100. In this embodiment, the left and right direction of the vehicle 10 is arranged as the stacking direction of the plurality of single cells 112 in the fuel cell stack 110, and the fuel cell stack 110 is stored in the storage space inside the mounting portion 100. It was. In the fuel cell stack 110, hundreds of single cells 112 are stacked, and the length in the stacking direction may be relatively long. Therefore, by arranging the fuel cell stack 110 in this manner, The fuel cell stack 110 can be mounted on the vehicle 10 by effectively using a relatively narrow space.

  As shown in FIG. 3 (a), the mounting portion 100 of the present embodiment includes a floor panel 12 of the vehicle 10 and a cover 14 fastened below the floor panel 12, thereby providing a fuel cell. A storage space for the stack 110 is formed. The floor panel 12 and the cover 14 are fastened by a plurality of bolts 16 and nuts 18. The floor panel 12 and the 14 cover 14 correspond to storage space constituent members in the present invention. In this embodiment, the fastening force between the floor panel 12 and the cover 14 is, as will be described later, when a force of a predetermined value or more acts on the cover 14 vertically downward, The nut 18 or the cover 14 is damaged, and the floor panel 12 and the cover 14 are set to be detached.

  As can be seen from FIG. 3A, in the mounting portion 100, the floor panel 12 corresponds to the sides S1, S5, and S6 (see FIG. 2) of the end plates 114a and 114b of the fuel cell stack 110 described above. And it has the shape which contact | abuts the outer peripheral surface of mount rubber | gum 116a, 116b. That is, in the storage space constituted by the floor panel 12 and the cover 14, the floor panel 12 has an acute angle with the floor surface (horizontal plane) of the vehicle 10, and the width of the storage space is narrower toward the top. An inner wall provided with an inclination is formed. The cover 14 is fitted with the fuel cell stack 110 (including the mount rubbers 116a and 116b) corresponding to the sides S2, S3, and S4 (see FIG. 2) of the end plates 114a and 114b of the fuel cell stack 110. A recessed portion 14c to be joined is formed.

  3B, in the mounting portion 100, the floor panel 12 includes an end plate 114a protruding from the outer peripheral surface of the stacked body of the plurality of single cells 112 in the fuel cell stack 110, and a mount. A rib portion 12Ra to which the rubber 116a is fitted, an end plate 114b, and a rib portion 12Rb to which the mount rubber 116b is fitted are formed. And the inner wall surface of rib part 12Ra and the mount rubber | gum 116a contact | abut. Further, the inner wall surface of the rib portion 12Rb and the mount rubber 116b abut. By doing so, the installation position of the fuel cell stack 110 in the vehicle 10 can be easily determined. Further, the lateral displacement of the fuel cell stack 110 in the left-right direction of the vehicle can be prevented.

  The floor panel 12 is formed so that a gap is formed between the floor panel 12 and the single cell 112 when the fuel cell stack 110 is installed. By doing so, it is possible to ensure insulation from the single cell 112 of the fuel cell stack 110. In the present embodiment, in the fuel cell stack 110, the mount rubbers 116a and 116b are installed on the outer peripheral portions of the end plates 114a and 114b, respectively. You may make it install mounting rubber also in a part.

A4. Action and effect:
FIG. 4 is an explanatory diagram showing the operation and effect of the vehicle 10 including the mounting unit 100. Here, a case where the vehicle 10 collides from the front will be described. As shown in FIG. 4A, when the vehicle 10 collides from the front, an arbitrary point P on the front inner wall surface provided with the above-described slope in the floor panel 12 has a vehicle at the time of the collision. The inertia force F corresponding to the acceleration of 10 or the weight of the fuel cell stack 110 acts in the direction opposite to the collision direction, that is, in front of the vehicle. The inertial force F is partially absorbed by the mount rubbers 116a and 116b as buffer materials. In practice, a frictional force acts between the floor panel 12 and the fuel cell stack 110 (mounting rubbers 116a and 116b). Here, in order to facilitate illustration and understanding, this Description of the frictional force is omitted.

  The inertial force F is decomposed into a component force Fp perpendicular to the inner wall surface of the floor panel 12 in the mounting portion 100 and a component force Fs parallel to the inner wall surface of the floor panel 12. Therefore, the magnitude of the component force Fp acting as a force for deforming the floor panel 12 is smaller than the magnitude of the inertial force F. As described above, in the mounting portion 100 of the present embodiment, the inner wall of the floor panel 12 provided with the slope described above is formed on both the front side and the rear side of the vehicle 10. Even when the vehicle 10 is collided from the rear, the same occurs as when the vehicle 10 collides from the front. Therefore, according to the vehicle 10 of the present embodiment, deformation or breakage of the floor panel 12 constituting the mounting portion 100 can be suppressed at the time of a collision from the front or rear of the vehicle 10.

  The mounting unit 100 according to the first embodiment also has the effects described below. That is, as shown in FIG. 4 (a), the point P on the fuel cell stack 110 is opposite in direction to the component force Fp of the inertial force F and has the same resistance force fp. . This drag force fp is decomposed into a horizontal component force fpx directed rearward of the vehicle 10 and a vertical component force fpy directed vertically downward of the vehicle 10. In the mounting portion 100 of the present embodiment, as described above, when the fastening force between the floor panel 12 and the cover 14 is applied to the cover 14 vertically below a predetermined value, a plurality of forces are applied. The bolt 16 and the nut 18 or the cover 14 are damaged, and the floor panel 12 and the cover 14 are separated. Therefore, the sum of the vertically downward vertical component force fpy (total sum of fpy) shown in FIG. 4A and the gravity G of the fuel cell stack 110 is reduced by the collision of the vehicle 10 or the like. As shown in FIG. 4B, the floor panel 12 and the 14 cover 14 are detached, and the cover 14 and the fuel cell stack 110 are dropped. Therefore, according to the vehicle 10 of the present embodiment, the fuel cell stack 110 does not move in the room of the vehicle 10 by such an action, so that the safety of the passenger of the vehicle 10 can be improved.

B. Second embodiment:
The vehicle 10 of the second embodiment is the same as the vehicle 10 of the first embodiment, except that the structure of the mounting portion of the fuel cell stack, the shape of the fuel cell stack, and the like are different from the vehicle 10 of the first embodiment. It is. Hereinafter, in the vehicle 10 of 2nd Example, a different part from the vehicle 10 of 1st Example is demonstrated.

  FIG. 5 is an explanatory diagram showing a schematic structure of the mounting portion 100A in the second embodiment. FIG. 5A shows a cross-sectional view (A-A cross-sectional view in FIG. 5B) when the mounting portion 100 </ b> A is viewed from the left side of the vehicle 10. In FIG. 5A, the left side is the front of the vehicle 10, the right side is the rear of the vehicle 10, the upper side is the upper side of the vehicle 10, and the lower side is the lower side of the vehicle 10. FIG. 5B is a cross-sectional view (cross-sectional view taken along line BB in FIG. 5A) when the mounting portion 100 </ b> A is viewed from above the vehicle 10. In FIG. 5B, the left side is the front of the vehicle 10, the right side is the rear of the vehicle 10, the upper side is the right side of the vehicle 10, and the lower side is the left side of the vehicle 10.

  As can be seen from the figure, in this embodiment, the outer shape of the fuel cell stack 110A is substantially a rectangular parallelepiped. The fuel cell stack 110A is housed in a stack case 120 having a hexagonal column shape that is substantially the same as the outer shape of the fuel cell stack 110 of the first embodiment. However, the stack case 120 does not have a protruding portion corresponding to the shape of the end plates 114a and 114b in the fuel cell stack 110 in the first embodiment. The fuel cell stack 110A is fixed in the stack case 120 via a plurality of mount members 130 made of an insulating material. In the present embodiment, the stack case 120 in which the fuel cell stack 110A is accommodated corresponds to a predetermined device in the present invention.

  Further, the fuel cell stack 110A of this embodiment includes a floor panel 12A of the vehicle 10 and a cover 14A fastened below the floor panel 12A, like the mounting portion 100 of the first embodiment. Thus, a storage space for the fuel cell stack 110A is formed. The floor panel 12A and the cover 14A are fastened by a plurality of bolts 16 and nuts 18. Also in this embodiment, the fastening force between the floor panel 12A and the cover 14A is similar to that in the first embodiment when a force of a predetermined value or more acts vertically on the cover 14A. The bolt 16 and the nut 18 or the cover 14A are broken so that the floor panel 12A and the cover 14A are separated.

  As can be seen from FIG. 5A, in the mounting portion 100 </ b> A, the floor panel 12 </ b> A and the cover 14 </ b> A have a shape that contacts the stack case 120. That is, as in the first embodiment, in the storage space constituted by the floor panel 12A and the cover 14A, the floor panel 12A has an acute angle with the floor surface (horizontal plane) of the vehicle 10 and is stored. An inner wall provided with an inclination is formed so that the width of the space becomes narrower vertically upward. Further, the cover 14A is formed with a recess 14Ac into which the stack case 120 is fitted, corresponding to the recess 14c formed in the cover 14 in the mounting portion 100 of the first embodiment.

  Further, as shown in FIG. 5B, in the mounting portion 100A, the floor panel 12A is formed with a recess 12Ac in which the upper surface of the stack case 120 and a part of the side surface (slope) are fitted. Has been. By doing so, the installation position of the stack case 120 in the vehicle 10 can be easily determined. Further, the lateral displacement of the stack case 120 in the left-right direction of the vehicle can be prevented.

  In the present embodiment, the stack case 120 is installed in the storage space constituted by the floor panel 12A and the cover 14A without interposing a cushioning material, but the floor panel 12A and A cushioning material made of rubber, urethane, or the like may be interposed between the cover 14A and the stack case 120.

  Also in the vehicle 10 of the second embodiment described above, the mounting portion 100A has substantially the same structure as the mounting portion 100 in the first embodiment, so that when the vehicle 10 collides from the front or the rear. The force acting as a force for deforming the floor panel 12A (component force Fp of the inertial force F in FIG. 4) can be made smaller than the inertial force F (see FIG. 4). Therefore, deformation and breakage of the floor panel 12A constituting the mounting portion 100A can be suppressed.

  Also in the vehicle 10 of the second embodiment, when the fastening force between the floor panel 12A and the cover 14A is applied to the cover 14A vertically below a predetermined value, the plurality of bolts 16 and The nut 18 or the cover 14A is damaged, and the floor panel 12A and the cover 14A are set to be detached. Accordingly, as in the first embodiment, the stack case 120 does not move in the vehicle 10 when the vehicle 10 collides, so that the safety of the passenger of the vehicle 10 can be improved.

C. Variation:
As mentioned above, although several embodiment of this invention was described, this invention is not limited to such embodiment at all, and implementation in various aspects is possible within the range which does not deviate from the summary. It is. For example, the following modifications are possible.

C1. Modification 1:
FIG. 6 is an explanatory diagram showing a schematic structure of a mounting portion 100B as a modification of the first embodiment.
FIG. 6A shows a cross-sectional view (A-A cross-sectional view in FIG. 6B) when the mounting portion 100 </ b> B is viewed from the front of the vehicle 10. In FIG. 6A, the left side is the right side of the vehicle 10, the right side is the left side of the vehicle 10, the upper side is above the vehicle 10, and the lower side is below the vehicle 10. 6B shows a cross-sectional view (BB cross-sectional view in FIG. 6A) when the mounting portion 100B is viewed from above the vehicle 10. FIG. In FIG. 6B, the left side is the right side of the vehicle 10, the right side is the left side of the vehicle 10, the upper side is the rear of the vehicle 10, and the lower side is the front of the vehicle 10.

  The fuel cell stack 110 housed in the mounting portion 100B is the same as 110 in the first embodiment. However, in this modification, the arrangement direction of the fuel cell stack 110 is different from that of the first embodiment. That is, the front-rear direction of the vehicle 10 is arranged as the stacking direction of the plurality of single cells 112 in the fuel cell stack 110, and the fuel cell stack 110 is stored in the storage space inside the mounting portion 100B. For this reason, the mounting part 100B of this modification has a structure described below.

  As shown in FIG. 6A, the mounting portion 100B of this modification includes a floor panel 12B of the vehicle 10 and a cover 14B fastened below the floor panel 12B. A storage space for the stack 110 is formed. And the floor panel 12B and the cover 14B are fastened with the some volt | bolt 16 and the nut 18 similarly to the mounting part 100 in 1st Example. In this modification as well, the fastening force between the floor panel 12B and the cover 14B is the same as in the first embodiment, when a force of a predetermined value or more acts vertically on the cover 14B. The bolt 16 and the nut 18 or the cover 14B are damaged, and the floor panel 12B and the cover 14B are set to be detached.

  Further, as can be seen from FIG. 6 (a), in the mounting portion 100B, the floor panel 12B has the sides S1, S5, and S6 in the end plates 114a and 114b of the fuel cell stack 110 shown above (see FIG. 2). Corresponding to the outer peripheral surfaces of the mount rubbers 116a and 116b. That is, in the storage space constituted by the floor panel 12B and the cover 14B, the floor panel 12B has an acute angle with the floor surface (horizontal plane) of the vehicle 10, and the width of the storage space is narrower toward the top. An inner wall provided with an inclination is formed. The cover 14B is fitted with the fuel cell stack 110 (including the mount rubbers 116a and 116b) corresponding to the sides S2, S3, and S4 (see FIG. 2) of the end plates 114a and 114b of the fuel cell stack 110. A recessed portion 14Bc to be joined is formed.

  As shown in FIG. 6B, in the mounting portion 100B, the floor panel 12B includes an end plate 114a protruding from the outer peripheral surface of the stacked body of the plurality of single cells 112 in the fuel cell stack 110, and a mount. A rib portion 12BRa to which the rubber 116a is fitted, an end plate 114b, and a rib portion 12BRb to which the mount rubber 116b is fitted are formed. Then, the inner wall surface of the rib portion 12BRa and the mount rubber 116a abut. Further, the inner wall surface of the rib portion 12BRb and the mount rubber 116b abut. By doing so, the installation position of the fuel cell stack 110 in the vehicle 10 can be easily determined.

  According to the vehicle 10 including the mounting portion 100B of the present modification described above, the mounting portion 100B has substantially the same structure as the mounting portion 100 in the first embodiment. Sometimes, the force acting as a force for deforming the floor panel 12B (component force Fp of the inertial force F in FIG. 4) can be made smaller than the inertial force F (see FIG. 4). Therefore, the deformation | transformation and breakage of the floor panel 12B which comprises the mounting part 100B can be suppressed.

  Also in the vehicle 10 of the present modified example, when a fastening force between the floor panel 12B and the cover 14B is applied to the cover 14B vertically above a predetermined value, the plurality of bolts 16 and The nut 18 or the cover 14B is damaged, and the floor panel 12B and the cover 14B are set to be detached. Therefore, as in the first embodiment, the fuel cell stack 110 does not move in the vehicle 10 when the vehicle 10 collides, so that the safety of the passenger of the vehicle 10 can be improved.

C2. Modification 2:
In the first embodiment, in the mounting portion 100, the angle formed between the floor panel 12 and the floor surface (horizontal plane) of the vehicle 10 is an acute angle, and the width of the storage space of the fuel cell stack 110 becomes narrower in the vertical direction. As described above, the inner wall provided with the inclination is configured, but the present invention is not limited to this.

  FIG. 7 is an explanatory diagram showing a schematic structure of a mounting portion 100C as another modification of the first embodiment. Similarly to FIG. 3, a cross-sectional view when the mounting portion 100 </ b> C is viewed from the left side of the vehicle 10 is shown. In FIG. 7, the left side is the front of the vehicle 10, the right side is the rear of the vehicle 10, the upper side is the upper side of the vehicle 10, and the lower side is the lower side of the vehicle 10.

  As shown in the figure, the mounting portion 100C of the present modification includes a floor panel 12C of the vehicle 10 and a cover 14C fastened above the floor panel 12C, thereby providing a storage space for the fuel cell stack 110. Is formed. The fuel cell stack 110 housed in the mounting portion 100C is the same as 110 in the first embodiment. The floor panel 12C and the cover 14C are fastened by a plurality of bolts 16 and nuts 18.

  As can be seen from the comparison with FIG. 3A, in the mounting portion 100, the cover 14C includes the sides S1, S5, and S6 of the end plates 114a and 114b of the fuel cell stack 110 described above (see FIG. 2). Corresponding to the outer peripheral surfaces of the mount rubbers 116a and 116b. That is, in the storage space constituted by the floor panel 12C and the cover 14C, the cover 14C has an acute angle with the floor surface (horizontal plane) of the vehicle 10, and the width of the storage space becomes narrower vertically upward. Thus, the inner wall is provided with an inclination. The cover 14C is fitted with the fuel cell stack 110 (including the mount rubbers 116a and 116b) corresponding to the sides S2, S3, and S4 (see FIG. 2) of the end plates 114a and 114b of the fuel cell stack 110. A recessed portion 12Cc to be joined is formed.

  Even with the vehicle 10 including the mounting portion 100C described above, the mounting portion 100C has substantially the same structure as that of the mounting portion 100 in the first embodiment. Therefore, when the vehicle 10 collides from the front or the rear. The force acting as a force for deforming the cover 14C (corresponding to the component force Fp of the inertial force F in FIG. 4) can be made smaller than the inertial force F (see FIG. 4). Therefore, deformation or breakage of the cover 14C constituting the mounting portion 100A can be suppressed.

  The shape of the cover 14C is not limited to the shape shown in FIG. FIG. 8 is an explanatory diagram showing a schematic structure of a mounting portion 100D as another modification of the first embodiment. Similarly to FIG. 7, a cross-sectional view when the mounting portion 100 </ b> D is viewed from the left side of the vehicle 10 is shown. In FIG. 8, the left side is the front of the vehicle 10, the right side is the rear of the vehicle 10, the upper side is the upper side of the vehicle 10, and the lower side is the lower side of the vehicle 10.

  As can be seen from the comparison between FIG. 7 and FIG. 8, the shapes of the covers 14C and 14D are different between the mounting portion 100C shown in FIG. 7 and the mounting portion 100D shown in FIG. That is, as shown in FIG. 8, the cover 14D in the mounting portion 100D is similar to the cover 14C in the mounting portion 100C. In the storage space constituted by the floor panel 12C and the cover 14D, the cover 14D is the vehicle 10 The angle formed with the floor surface (horizontal plane) of the wall is an acute angle, and has an inner wall that is inclined so that the width of the storage space becomes narrower in the vertical direction, but is thicker than the cover 14C have. The rest of the mounting portion 100C and the mounting portion 100D are the same. By doing so, the same effect as the mounting portion 100C shown in FIG. 7 can be obtained.

  That is, in the mounting portions 100C and 100D, the covers 14C and 14D constituting the storage space of the fuel cell stack 110 are acute angles with the floor surface (horizontal plane) of the vehicle 10, and the width of the storage space is vertically upward. What is necessary is just to have an inner wall provided with the inclination so that it may become so narrow. The same applies to the floor panels 12, 12A, 12B in the mounting portions 100, 100A, 100B described above.

C3. Modification 3:
The mounting portions 100 and 100A in the first embodiment and the second embodiment described above, and the mounting portions 100B, 100C, and 100D in the modified example are compared with the fuel cell stack 110 or the stack case 120 in the vehicle 10. Although the structure corresponding to the collision from the front-rear direction or the left-right direction is provided, the present invention is not limited to this. The mounting portion may have a structure that can cope with a collision from the fuel cell stack 110 or the stack case 120 from the front-rear direction and the left-right direction of the vehicle 10 and from an oblique direction. Therefore, a shape that forms a part of the inner wall of the mounting portion with the floor surface (horizontal plane) of the vehicle 10 is an acute angle, and the width of the storage space becomes narrower toward the top vertically, for example, a polygonal frustum, You may make it make the shape of the side surface of a truncated cone. In this case, it is preferable to form the fuel cell stack and the stack case so as to correspond to the shape of the inner wall of the mounting portion described above and to come into contact with the inner wall surface.

C4. Modification 4:
In the fuel cell stack 110 according to the first embodiment or the like, as shown in FIG. 2, a stack of 114a and 114b having a hexagonal planar shape and a single cell 112 having a hexagonal planar shape is laminated. However, the fuel cell stack may have other shapes.

  FIG. 9 is a perspective view showing an appearance of a fuel cell stack 110B as a modification. As shown in the figure, the fuel cell stack 110B is formed by stacking a plurality of single cells 112A having a rectangular planar shape. A current collecting plate and an insulating plate are arranged in this order at both ends of the multilayer body of the plurality of single cells 112A, respectively, and further, the end plates 114a and 114b in the first embodiment are arranged at both ends. End plates 114a and 114b having the same hexagonal planar shape are arranged. Mount rubbers 116a and 116b are respectively installed on the outer peripheral portions of the end plates 114a and 114b as in the first embodiment. Even with such a fuel cell stack 110A, the same effect as the fuel cell stack 110 in the first embodiment can be obtained.

  FIG. 10 is a perspective view showing the appearance of a fuel cell stack 110C as another modification. This fuel cell stack 110C has a hexagonal planar shape in the fuel cell stack 110 of the first embodiment on the outer peripheral portion of the end plate in the fuel cell stack 110A having a rectangular parallelepiped outer shape in the second embodiment, as shown in the figure. Mount rubbers 116Ca and 116Cb having substantially the same outer shape as the end plates 114a and 114b having the above are installed. Even with such a fuel cell stack 110C, the same effect as that of the fuel cell stack 110 in the first embodiment can be obtained.

C5. Modification 5:
In the first embodiment and the second embodiment, the cover portions 14 and 14A are provided with the recesses 14c and 14Ac in the mounting portions 100 and 100A, but this may be omitted. In this case, the shapes of the fuel cell stack 110 and the stack case 120 may be substantially trapezoidal columns corresponding to the internal shapes of the mounting portions 100 and 100A.

C6. Modification 6:
In the above-described embodiments and modifications, the case where the fuel cell stack is mounted on the mounting portion of the vehicle 10 has been described, but the present invention is not limited to this. The present invention can be applied to a mounting portion for mounting other devices for driving the vehicle 10, such as a battery, a fuel tank, and a motor.

C7. Modification 7:
In the said Example, although the mounting part shall be arrange | positioned under the seat seat in the vehicle 10, this invention is not limited to this. The mounting position of the mounting portion in 10 can be arbitrarily set. However, from the viewpoint of running stability of the vehicle 10, the mounting portion is preferably arranged in consideration of the weight balance of the vehicle 10.

It is explanatory drawing which shows schematic structure of the vehicle as 1st Example of this invention. It is a perspective view which shows the external appearance of the fuel cell stack 110 in 1st Example. It is explanatory drawing which shows schematic structure of the mounting part 100 in 1st Example. FIG. 8 is an explanatory diagram showing an operation and an effect due to the vehicle 10 including a mounting unit 100. It is explanatory drawing which shows schematic structure of the mounting part 100A in 2nd Example. It is explanatory drawing which shows schematic structure of the mounting part 100B as a modification of 1st Example. It is explanatory drawing which shows schematic structure of the mounting part 100C as another modification of 1st Example. It is explanatory drawing which shows schematic structure of mounting part 100D as another modification of 1st Example. It is a perspective view which shows the external appearance of the fuel cell stack 110B as a modification. It is a perspective view which shows the external appearance of 110C of fuel cell stacks as another modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vehicle 12, 12A, 12B, 12C ... Floor panel 12Ra, 12Rb, 12BRa, 12BRb ... Rib part 12Ac, 12Cc ... Recess 14, 14A, 14B, 14C, 14D ... Cover 14c, 14Ac, 14Bc ... Recess 16 ... Bolt 18 ... Nut 100,100A, 100B, 100C, 100D ... Mounting part 110,110A, 110B, 110C ... Fuel cell stack 112,112A ... Single cell 114a, 114b ... End plate 116a, 116b, 116Ca, 116Cb ... Mount rubber 120 ... Stack Case 130: Mount member

Claims (6)

A vehicle equipped with a device mounting portion for mounting a predetermined device used for driving the vehicle on the floor surface portion of the vehicle,
The device mounting portion includes a storage space constituting member that configures a storage space for storing the device,
The storage space component member has an inner wall provided with an inclination so that an angle formed with the floor surface of the vehicle is an acute angle in the storage space.
The vehicle has a shape that abuts at least a part of an inner wall of the storage space constituting member provided with the slope with a surface. The vehicle according to claim 1,
The said inclination is a vehicle provided in the at least front side of the said vehicle. The vehicle according to claim 1 or 2,
The storage space component is
A floor panel of the vehicle;
A cover fastened to the floor panel,
A vehicle in which at least one of the floor panel and the cover has an inner wall provided with the slope. The vehicle according to claim 1 or 2,
The storage space component is
A floor panel of the vehicle having an inner wall provided with the slope;
A cover fastened below the floor panel,
The fastening force between the floor panel and the cover is set so that the floor panel and the cover are separated when a force of a predetermined value or more acts vertically below the cover. . The vehicle according to any one of claims 1 to 4,
When an external force is applied to the vehicle in a substantially horizontal direction, a buffer material for absorbing the force acting on the inner wall and the device is interposed between the device and the inner wall. The vehicle. A vehicle according to any one of claims 1 to 5,
The device includes a vehicle including at least one of a fuel cell, a battery, and a fuel tank.

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