JP4437640B2 - Fuel cell stack mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fuel cell stack mounting structure for mounting on a vehicle a fuel cell stack in which a plurality of unit cells are stacked along the traveling direction of the vehicle.
[0002]
[Prior art]
In recent years, various fuel cells have been developed. For example, solid polymer fuel cells are known. This polymer electrolyte fuel cell employs an electrolyte membrane (electrolyte) made of a polymer ion exchange membrane (cation exchange membrane). An electrolyte membrane / electrode structure (electrolyte / electrode structure) in which an anode catalyst and a cathode electrode made of an electrode catalyst and porous carbon are provided on both sides of the electrolyte membrane is sandwiched between separators (bipolar plates). Thus, a unit cell is configured. This unit cell is normally used as a fuel cell stack in which a predetermined number is stacked in order to obtain a desired power generation.
[0003]
In this type of fuel cell, a fuel gas supplied to the anode side electrode, for example, a gas mainly containing hydrogen (hereinafter, also referred to as a hydrogen-containing gas) is ionized by hydrogen on the electrode catalyst, via an electrolyte. It moves to the cathode side electrode side. Electrons generated during that time are taken out to an external circuit and used as direct current electric energy. The cathode side electrode is supplied with an oxidant gas, for example, a gas mainly containing oxygen or air (hereinafter also referred to as an oxygen-containing gas). And oxygen react to produce water.
[0004]
By the way, when the fuel cell stack is used in a vehicle or the like, a load acts on the fuel cell stack due to vibration during traveling, repeated start and stop, or the like. For this reason, it is necessary to firmly fix the fuel cell stack to the vehicle. For example, a support device for a vehicle fuel cell disclosed in Patent Document 1 is known.
[0005]
As shown in FIG. 11, the support device includes a fuel cell 1. The fuel cell 1 includes a unit cell 2 and a separator 3 that are stacked, and a vehicle front plate 4 and a vehicle that are stacked at both ends in the stacking direction. The rear plate 5 is arranged to constitute a stack. A first support member 6 is disposed on the vehicle front side plate 4, and a second support member 7 is disposed on the vehicle rear side plate 5.
[0006]
The first support member 6 has a function of preventing the fuel cell 1 from moving in the vehicle front direction. The first support member 6 supports the fuel cell 1 so as not to move forward in the vehicle and is movable in the vehicle vertical direction, and a buffer member 6b for absorbing vibration in the vehicle vertical direction. It has.
[0007]
The second support member 7 has a function of allowing the fuel cell 1 to move in the vehicle rearward direction when the vehicle suddenly starts or accelerates. The second support member 7 includes a support component 7a that supports the fuel cell 1 so as to be movable in the vehicle longitudinal direction and the vertical direction, and a buffer member 7b for absorbing vibration in the vertical direction of the vehicle.
[0008]
In such a configuration, when the vehicle suddenly brakes, the vehicle rear side portion of the fuel cell 1 can be moved to the vehicle front side via the second support member 7. For this reason, when the vehicle suddenly brakes, a force acts in the direction in which the gap between each unit cell 2 and separator 3 constituting the fuel cell 1 is narrowed, and the sealing performance of the fuel cell 1 can be improved. It is said.
[0009]
[Patent Document 1]
JP 2001-30771 A (paragraphs [0038], [0039], [0043], FIG. 1)
[0010]
[Problems to be solved by the invention]
However, at the time of sudden braking of the vehicle as described above, the vehicle front side plate 4 cannot be moved to both front sides for being supported by the first support member 6. Therefore, a considerably large surface pressure may be applied to the unit cell 2 and the separator 3 in the vicinity of the vehicle front side plate 4. Thereby, for example, there is a problem that a surface pressure higher than the compressive strength acts on the electrolyte / electrode structure constituting the unit cell 2 and the durability of the electrolyte / electrode structure is lowered.
[0011]
Furthermore, when the separator 3 is made of a metal separator, the metal separator may be deformed if an excessive surface pressure is applied. For this reason, there exists a problem that the reaction gas flow path and cooling medium flow path of fuel gas or oxidant gas cannot be maintained in a desired shape. As a result, fuel gas and oxidant gas cannot be satisfactorily supplied to the unit cell 2, and the power generation performance of the unit cell 2 may be reduced.
[0012]
The present invention solves this type of problem, and maintains a desired sealing property as a whole of the fuel cell stack, and can prevent a fuel cell stack from exerting an excessive surface pressure on a unit cell. The purpose is to provide.
[0013]
[Means for Solving the Problems]
Main departure Clearly The fuel cell stack mounting structure includes a unit cell that sandwiches an electrolyte / electrode structure provided with electrodes on both sides of the electrolyte with a separator, and a plurality of the unit cells are stacked along the traveling direction of the vehicle. Thus, an in-vehicle fuel cell stack is configured.
[0014]
The fuel cell stack is slidably supported along the traveling direction of the vehicle via a movable guide mechanism, and an impact acting on the fuel cell stack in the traveling direction is an impact absorbing mechanism. Is Absorbed by the damper mechanism. For this reason, when an external force is applied to the fuel cell stack in the stacking direction due to a sudden start or stop of the vehicle, the entire fuel cell stack moves in the stacking direction, and the impact of the fuel cell stack under the action of the damper mechanism Is absorbed.
[0015]
Accordingly, it is possible to reliably prevent an excessive surface pressure from acting on the unit cells arranged particularly at the end portions in the stacking direction, while no unnecessary gaps are formed between the unit cells. . As a result, the unit cell can be effectively protected with a simple configuration, and the desired sealing performance can be secured to improve the power generation performance.
[0016]
Also , The palator is made of a metal separator, and the impact acting on the unit cell is well absorbed, so that the metal separator can be reliably prevented from being deformed. For this reason, the reaction gas flow path and the cooling medium flow path provided in the metal separator are not deformed, and the desired power generation performance can be effectively maintained.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic overall perspective view of an in-vehicle fuel cell stack 10 to which a mount structure 70 according to a first embodiment of the present invention is applied. FIG. 2 is a partial sectional side view of the fuel cell stack 10. FIG.
[0018]
The fuel cell stack 10 includes a stacked body 14 in which a plurality of unit cells 12 are stacked in a traveling direction (arrow A direction) of a vehicle (not shown), and terminals are disposed at both ends of the stacked body 14 in the stacking direction (arrow A direction). Terminal plates 16a and 16b, insulator plates 18a and 18b, and end plates 20a and 20b are sequentially arranged outward.
[0019]
The end plates 20 a and 20 b are integrally coupled via the case member 22. The case member 22 includes a lower plate 24a, an upper plate 24b, and side plates 24c and 24d, which are fixed to the end plates 20a and 20b via bolts 26.
[0020]
As shown in FIG. 2 and FIG. 3, each unit cell 12 includes an electrolyte membrane / electrode structure (electrolyte / electrode structure) 34 and first and second metal members sandwiching the electrolyte membrane / electrode structure 34. Separators 36 and 38 are provided. Instead of the first and second metal separators 36 and 38, for example, a carbon separator may be used.
[0021]
One end edge of the unit cell 12 in the long side direction (arrow B direction) communicates with each other in the arrow A direction, and an oxidant gas supply communication hole 40a for supplying an oxidant gas, for example, an oxygen-containing gas, A cooling medium supply communication hole 42a for supplying a cooling medium and a fuel gas discharge communication hole 44b for discharging a fuel gas, for example, a hydrogen-containing gas, are provided.
[0022]
The other end edge in the long side direction of the unit cell 12 communicates with each other in the direction of arrow A, and a fuel gas supply communication hole 44a for supplying fuel gas, and a cooling medium discharge communication hole for discharging the cooling medium. 42b and an oxidant gas discharge communication hole 40b for discharging the oxidant gas are provided.
[0023]
The electrolyte membrane / electrode structure 34 includes, for example, a solid polymer electrolyte membrane 46 in which a perfluorosulfonic acid thin film is impregnated with water, and an anode side electrode 48 and a cathode side electrode 50 that sandwich the solid polymer electrolyte membrane 46. With.
[0024]
The anode side electrode 48 and the cathode side electrode 50 are composed of a gas diffusion layer made of carbon paper or the like, and an electrode catalyst layer in which porous carbon particles having a platinum alloy supported on the surface are uniformly applied to the surface of the gas diffusion layer. Respectively. The electrode catalyst layer is bonded to both surfaces of the solid polymer electrolyte membrane 46.
[0025]
A fuel gas flow path 52 that connects the fuel gas supply communication hole 44 a and the fuel gas discharge communication hole 44 b is formed on the surface 36 a of the first metal separator 36 facing the electrolyte membrane / electrode structure 34. The fuel gas channel 52 is provided with a plurality of grooves extending in the direction of arrow B, for example. On the surface 36b of the first metal separator 36, a cooling medium flow path 54 that connects the cooling medium supply communication hole 42a and the cooling medium discharge communication hole 42b is formed. The cooling medium flow path 54 is provided with a plurality of grooves extending in the arrow B direction.
[0026]
The surface 38a of the second metal separator 38 facing the electrolyte membrane / electrode structure 34 is provided with, for example, an oxidant gas flow path 56 composed of a plurality of grooves extending in the direction of arrow B, and this oxidant gas. The flow path 56 communicates with the oxidant gas supply communication hole 40a and the oxidant gas discharge communication hole 40b.
[0027]
As shown in FIG. 1, at one edge of the end plate 20a in the long side direction (arrow B direction), an oxidant gas supply communication hole 40a, a cooling medium supply communication hole 42a, and a fuel gas discharge communication hole 44b communicate with each other. An oxidant gas supply port 60a, a cooling medium supply port 62a, and a fuel gas discharge port 64b are provided. The other end edge of the end plate 20a in the long side direction is provided with a fuel gas supply port 64a, a coolant supply port 64a, a coolant discharge port 42b, a coolant discharge port 42b, and a coolant discharge port 40b. 62b and an oxidant gas outlet 60b are provided.
[0028]
The fuel cell stack 10 is mounted on the mounting portion 72 of the vehicle via the mount structure 70. The mount structure 70 absorbs an impact acting on the fuel cell stack 10 in the traveling direction, and a movable guide mechanism 74 that supports the fuel cell stack 10 slidably along the traveling direction (arrow A direction). And a damper mechanism (shock absorbing mechanism) 76.
[0029]
As shown in FIGS. 2 and 4, the movable guide mechanism 74 includes a first movable portion 78 provided on the end side in the arrow A1 direction of the fuel cell stack 10 and an end portion in the arrow A2 direction of the fuel cell stack 10. A second movable part 80 is provided. The first movable part 78 includes fixed rails 82a and 82b that are fixed to the attachment part 72 by screws and are arranged in parallel in the arrow B direction, and a pair of movable rails 84a and 84b that are fixed to the end plate 20b. The movable rails 84a and 84b have an L-shaped cross section and are supported by the fixed rails 82a and 82b so that the movable rails 84a and 84b can move forward and backward in the direction of arrow A. The first movable portion 78 may be provided with stoppers 85a and 85b, for example, in order to prevent the movable rails 84a and 84b from being detached from the fixed rails 82a and 82b (see FIG. 2).
[0030]
The second movable portion 80 includes a mount member 86 fixed to the end plate 20 a, and the mount member 86 is supported by the mount base 88. The mount base 88 is screwed and fixed to the mounting portion 72, and fixed rail portions 90a and 90b having a U-shaped cross section are bent at both ends in the direction of arrow B so as to be close to each other. At both ends in the arrow B direction of the mount member 86, movable rail portions 92a and 92b supported by the fixed rail portions 90a and 90b are formed so as to protrude in a direction away from each other.
[0031]
The damper mechanism 76 includes a pair of damper units 96 a and 96 b that are mounted on the mount base 88 via a fixing member 94. Rods 98a and 98b extending from the damper units 96a and 96b are connected to a mount member 86, and the fuel cell stack 10 to which the mount member 86 is fixed absorbs shocks via the damper units 96a and 96b. Is possible. The damper units 96a and 96b are configured to absorb impacts in the directions of the arrows A1 and A2 via, for example, hydraulic pressure, air pressure, or an elastic body.
[0032]
The operation of the fuel cell stack 10 configured as described above will be described below.
[0033]
First, as shown in FIG. 1, a fuel gas such as a hydrogen-containing gas is supplied from the fuel gas supply port 64a of the end plate 20a into the fuel cell stack 10, and an oxygen-containing gas is supplied from the oxidant gas supply port 60a. An oxidant gas such as is supplied. Further, a cooling medium such as pure water, ethylene glycol, or oil is supplied from the cooling medium supply port 62a. Therefore, in the stacked body 14, the fuel gas, the oxidant gas, and the cooling medium are supplied in series in the arrow A1 direction to the plurality of unit cells 12 that are overlapped in the arrow A direction.
[0034]
As shown in FIG. 3, the oxidant gas is introduced into the oxidant gas flow path 56 of the second metal separator 38 through the oxidant gas supply communication hole 40 a, and enters the cathode side electrode 50 of the electrolyte membrane / electrode structure 34. Move along. On the other hand, the fuel gas is introduced into the fuel gas flow path 52 of the first metal separator 36 through the fuel gas supply communication hole 44 a and moves along the anode side electrode 48 of the electrolyte membrane / electrode structure 34.
[0035]
Therefore, in each electrolyte membrane / electrode structure 34, the oxidant gas supplied to the cathode side electrode 50 and the fuel gas supplied to the anode side electrode 48 are consumed by an electrochemical reaction in the electrode catalyst layer, Power generation is performed.
[0036]
Next, the consumed fuel gas supplied to the anode side electrode 48 is discharged to the fuel gas discharge communication hole 44b and flows in the direction of the arrow A2, and then discharged from the fuel gas discharge port 64b of the end plate 20a (FIG. 1). Similarly, the oxidant gas consumed by being supplied to the cathode side electrode 50 flows in the direction of arrow A2 along the oxidant gas discharge communication hole 40b, and is then discharged from the oxidant gas discharge port 60b of the end plate 20a. The
[0037]
The cooling medium supplied to the cooling medium supply port 62a is introduced into the cooling medium flow channel 54 of the first metal separator 36 from the cooling medium supply communication hole 42a, and then circulates in the direction of arrow B. After cooling the electrolyte membrane / electrode structure 34, the cooling medium moves through the cooling medium discharge communication hole 42b in the direction of arrow A2, and is discharged from the cooling medium discharge port 62b of the end plate 20a.
[0038]
In this case, in the first embodiment, the fuel cell stack 10 is supported so as to be slidable along the traveling direction of the vehicle (the direction of the arrow A) via the movable guide mechanism 74 and to the fuel cell stack 10. The shock acting in the traveling direction is absorbed by the damper mechanism 76 (see FIGS. 2 and 4).
[0039]
For this reason, when an external force is applied to the fuel cell stack 10 in the direction of arrow A due to a sudden start or stop of the vehicle, the entire fuel cell stack 10 has the first and second movable parts 78 constituting the movable guide mechanism 74. , 80 in the direction of arrow A under the guide action. At this time, the damper units 96a and 96b constituting the damper mechanism 76 are fixed to the mount base 88 constituting the second movable portion 80, and the rods 98a and 98b of the damper units 96a and 96b are connected to the mount member 86. ing.
[0040]
Accordingly, when the fuel cell stack 10 moves in the direction of the arrow A, the rods 98a and 98b slowly move forward and backward, and the impact due to the movement of the fuel cell stack 10 is absorbed. Thereby, in particular, it is possible to reliably prevent an excessive surface pressure from acting on the unit cells 12 disposed at the stacking direction end portions of the fuel cell stack 10, while the unit cells 12 are more than necessary. No gap is formed.
[0041]
For this reason, in the first embodiment, it is possible to effectively prevent the unit cell 12 from being damaged with a simple configuration, and to secure a desired sealing property to improve the power generation performance of the unit cell 12. The effect that it becomes possible to aim at is acquired.
[0042]
Moreover, even when the first and second metal separators 36 and 38 are used, it is possible to prevent an excessive surface pressure from acting on the first and second metal separators 36 and 38. Therefore, the first and second metal separators 36 and 38 are reliably prevented from being deformed, and the fuel gas flow path 52 and the oxidant gas flow path 56 provided in the first and second metal separators 36 and 38. In addition, it is possible to secure the shape of the cooling medium flow path 54 and effectively maintain the desired power generation performance.
[0043]
FIG. 5 is a schematic perspective explanatory view of an in-vehicle fuel cell stack 110 to which the mount structure 120 according to the second embodiment of the present invention is applied. The same components as those of the fuel cell stack 10 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Similarly, in the third to seventh embodiments described below, detailed description thereof is omitted.
[0044]
The fuel cell stack 110 includes a stacked body 14 in which a plurality of unit cells 12 are stacked. End plates 112 and 114 are disposed at both ends of the stacked body 14 in the stacking direction. The end plates 112 and 114 are clamped and held via a plurality of tie rods 116, and a desired tightening load is applied to the laminate 14 disposed between the end plates 112 and 114.
[0045]
The mount structure 120 includes a movable guide mechanism 74 and a damper mechanism 76. The movable guide mechanism 74 includes first and second movable portions 78 and 122, and the second movable portion 122 includes mount members 124 a and 124 b that are fixed to the end plate 112.
[0046]
The mount members 124a and 124b engage with the mount bases 126a and 126b fixed to the mounting portion 72 and are guided in the direction of arrow A. The mount bases 126a and 126b include a damper that constitutes a damper mechanism 76. Units 96a and 96b are fixed. The rods 98a and 98b of the damper units 96a and 96b are connected to the mount members 124a and 124b. Note that the movable rails 84 a and 84 b constituting the first movable portion 78 are fixed to the end plate 114.
[0047]
In the second embodiment configured as described above, the first movable portion 78 constituting the movable guide mechanism 74 is provided on the end plate 114 side, and the second movable portion 122 is provided on the end plate 112 side. Therefore, the entire fuel cell stack 110 can be advanced and retracted in the direction of arrow A via the first and second movable parts 78 and 122.
[0048]
At this time, the rods 98a and 98b of the damper units 96a and 96b constituting the damper mechanism 76 are fixed to the mount members 124a and 124b fixed to the end plate 112, while the damper units 96a and 96b are mounted on the mount base 126a. 126b.
[0049]
Accordingly, when an external force acts on the fuel cell stack 110 in the stacking direction (arrow A direction) due to sudden start or stop of the vehicle, the fuel cell stack 110 as a whole moves in the direction of arrow A, and the damper mechanism 76 operates. Further, the impact of the fuel cell stack 110 is absorbed. As a result, it is possible to effectively protect the unit cell 12 with a simple configuration and obtain the same effects as those of the first embodiment, such as ensuring desired sealing performance and improving power generation performance. It is done.
[0050]
FIG. 6 is a schematic overall perspective view of an in-vehicle fuel cell stack 10 to which a mount structure 130 according to a third embodiment of the present invention is applied.
[0051]
The mount structure 130 includes a movable guide mechanism 132 and a damper mechanism 76. The movable guide mechanism 132 is in sliding contact with the side plates 24c and 24d of the case member 22 to guide the entire case member 22 in the direction of arrow A, and guide members 136a, 136b, 136c and 136d. With. The guide members 134a to 134d have a substantially L-shaped cross section, and a horizontal portion is screwed to the mounting portion 72, and a vertical portion is slidably in contact with the lower side of the side plates 24c and 24d. Similarly, the guide members 136a to 136d have a substantially L-shaped cross section, the horizontal portion is screwed to the top plate 138, and the vertical portion is in sliding contact with the upper side of the side plates 24c and 24d. In the damper mechanism 76, the rods 98a and 98b of the damper units 96a and 96b are directly connected to the end plate 20a.
[0052]
FIG. 7 is a schematic overall perspective view of an in-vehicle fuel cell stack 110 to which a mount structure 140 according to a fourth embodiment of the present invention is applied.
[0053]
The mount structure 140 includes a movable guide mechanism 142 and a damper mechanism 76. The movable guide mechanism 142 includes substantially I-shaped recesses 144a and 144b formed in the block portions 143a and 143b provided on the end plates 112 and 114, and a substantially I-shape that is fixed to the attachment portion 72 with screws. Guide members 146a and 146b. The guide members 146a and 146b guide the fuel cell stack 110 in the arrow A direction by fitting into the recesses 144a and 144b. In the damper mechanism 76, the rods 98a and 98b of the damper units 96a and 96b are directly connected to the end plate 112.
[0054]
FIG. 8 is a schematic side view of an in-vehicle fuel cell stack 10 to which a mount structure 150 according to a fifth embodiment of the present invention is applied.
[0055]
The mount structure 150 includes a damper mechanism 152 connected to the end plates 20a and 20b. The damper mechanism 152 also functions as a movable guide mechanism that supports the fuel cell stack 10 so as to be movable in the direction of arrow A. ing.
[0056]
The damper mechanism 152 includes damper units 154a and 154b. The rod 156a of the damper unit 154a is connected to the end plate 20a, and the rod 156b of the damper unit 154b is connected to the end plate 20b.
[0057]
Note that a plurality of damper units 154a and 154b are provided, each having a function of allowing the fuel cell stack 10 to slide in the direction of arrow A and absorbing the impact acting on the fuel cell stack 10 with certainty. .
[0058]
FIG. 9 is an explanatory schematic side view of an in-vehicle fuel cell stack 10 to which a mount structure 160 according to a sixth embodiment of the present invention is applied.
[0059]
The mount structure 160 includes a movable guide mechanism 162 and a damper mechanism 164. The movable guide mechanism 162 includes a first movable portion 78 connected to the end plate 20b side and a second movable portion 166 attached to the end plate 20a side. The second movable part 166 is configured in the same manner as the first movable part 78.
[0060]
The damper mechanism 164 includes a protrusion 168 bulging downward from the lower plate 24 a of the fuel cell stack 10 and a damper unit 170 connected to the protrusion 168. The damper unit 170 is fixed to the attachment portion 72, and the rod 172 is connected to the attachment portion 168. A plurality of damper units 170 can be provided as necessary.
[0061]
FIG. 10 is an explanatory schematic side view of an in-vehicle fuel cell stack 10 to which a mount structure 160a according to a seventh embodiment of the present invention is applied. The same components as those of the mount structure 160 according to the sixth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
[0062]
The mount structure 160a includes a movable guide mechanism 173 and a damper mechanism 164. The movable guide mechanism 173 includes brackets 174a and 174b fixed to both ends of the lower plate 24a in the arrow A direction. The brackets 174a and 174b are formed with long holes 176a and 176b elongated in the direction of the arrow A, and rubber mounts 178a and 178b are disposed in the long holes 176a and 176b.
[0063]
The rubber mounts 178a and 178b are provided with collar members 180a and 180b at the top, and the collar members 180a and 180b are inserted into the long holes 176a and 176b. The lower portions of the rubber mounts 178a and 178b are fixed to the mounting portion 72 with screws.
[0064]
In the first to seventh embodiments, the fuel cell stacks 10 and 110 can be selectively used, and can be similarly applied to other various fuel cell stacks.
[0065]
【The invention's effect】
The fuel cell stack mounting structure according to the present invention is supported slidably along the traveling direction of the vehicle via a movable guide mechanism, and the impact acting on the fuel cell stack in the traveling direction is Absorbed by the absorption mechanism. For this reason, when an external force acts on the fuel cell stack in the stacking direction due to sudden start or stop of the vehicle, the entire fuel cell stack moves in the stacking direction, and the fuel cell stack is Shock is absorbed.
[0066]
Accordingly, it is possible to reliably prevent an excessive surface pressure from acting on the unit cells arranged particularly at the end portions in the stacking direction, while no unnecessary gap is formed between the unit cells. . As a result, the unit cell can be effectively protected with a simple configuration, and the desired sealing performance can be secured to improve the power generation performance.
[Brief description of the drawings]
FIG. 1 is a schematic overall perspective view of an in-vehicle fuel cell stack to which a mount structure according to a first embodiment of the present invention is applied.
FIG. 2 is a partial cross-sectional side view of the fuel cell stack.
FIG. 3 is an exploded perspective view of unit cells constituting the fuel cell stack.
FIG. 4 is an explanatory perspective view of the mount structure.
FIG. 5 is a schematic perspective explanatory view of an in-vehicle fuel cell stack to which a mount structure according to a second embodiment of the present invention is applied.
FIG. 6 is a schematic overall perspective view of an in-vehicle fuel cell stack to which a mount structure according to a third embodiment of the present invention is applied.
FIG. 7 is a schematic overall perspective view of an in-vehicle fuel cell stack to which a mount structure according to a fourth embodiment of the present invention is applied.
FIG. 8 is a schematic side view illustrating a vehicle-mounted fuel cell stack to which a mount structure according to a fifth embodiment of the present invention is applied.
FIG. 9 is a schematic side view of a vehicle-mounted fuel cell stack to which a mount structure according to a sixth embodiment of the present invention is applied.
FIG. 10 is a schematic side view of a vehicle-mounted fuel cell stack to which a mount structure according to a seventh embodiment of the present invention is applied.
11 is a schematic perspective explanatory view of a vehicle fuel cell support device according to Patent Document 1. FIG.
[Explanation of symbols]
10, 110 ... Fuel cell stack 12 ... Unit cell
14 ... Laminated body
20a, 20b, 112, 114 ... end plate
22 ... Case member 24a ... Lower plate
24b ... Upper plate 24c, 24d ... Side plate
34 ... Electrolyte membrane / electrode structure 36, 38 ... Metal separator
46 ... Solid polymer electrolyte membrane 48 ... Anode side electrode
50 ... Cathode side electrode
70, 120, 130, 140, 150, 160, 160a ... mount structure
74, 132, 142, 162, 173 ... movable guide mechanism
76, 152, 164 ... damper mechanism 78, 80, 166 ... movable part
82a, 82b ... fixed rails 84a, 84b ... movable rails
86, 124a, 124b ... mount members
88, 126a, 126b ... mount base
90a, 90b ... fixed rail part 92a, 92b ... movable rail part
96a, 96b, 154a, 154b ... Damper unit
134a to 134d, 136a to 136d, 146a, 146b ... guide members
144a, 144b ... recess 174a, 174b ... bracket
178a, 178b ... Rubber mount

Claims (3)

A unit cell that sandwiches an electrolyte / electrode structure with electrodes on both sides of the electrolyte by a separator is stacked, and a plurality of the unit cells are stacked along the traveling direction of the vehicle, and end plates are arranged at both ends in the stacking direction. the fuel cell stack to be set, a mounting structure of a fuel cell stack for mounting on the vehicle,
A movable guide mechanism that slidably supports the fuel cell stack along the traveling direction;
An impact absorbing mechanism that absorbs an impact acting in the traveling direction on the fuel cell stack;
With
It said shock absorbing mechanism includes at least one of the end plates, mounting structure of a fuel cell stack, wherein the damper mechanism der Rukoto connected to parallel mounting surfaces in the stacking direction of the unit cells. A unit cell that sandwiches an electrolyte / electrode structure provided with electrodes on both sides of an electrolyte by a separator, and a plurality of the unit cells are stacked along a traveling direction of a vehicle, and is stored in a case member A fuel cell stack mounting structure for mounting the battery stack on the vehicle,
A movable guide mechanism that slidably supports the fuel cell stack along the traveling direction;
An impact absorbing mechanism for absorbing an impact acting in the traveling direction on the fuel cell stack;
With
The shock absorbing mechanism is a damper mechanism connected to one side surface of the case member and a mounting surface facing the one side surface and parallel to the stacking direction of the unit cells. Mount structure. 3. The fuel cell stack mounting structure according to claim 1, wherein the separator is made of a metal separator.

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