JP5207834B2 - Automotive fuel cell stack - Google Patents

Description

  The present invention relates to an on-vehicle fuel cell stack in which a plurality of fuel cells are stacked while being disposed in a center console provided between a left and right front seat in a vehicle interior.

  For example, a polymer electrolyte fuel cell employs an electrolyte membrane (electrolyte) made of a polymer ion exchange membrane. A fuel cell is configured by sandwiching an electrolyte membrane / electrode structure in which an anode side electrode and a cathode side electrode are disposed on both sides of the electrolyte membrane with a separator.

  Usually, a fuel cell is used as a fuel cell stack in which a predetermined number (for example, several tens to several hundreds) is stacked in order to obtain a desired power generation. This type of fuel cell stack is incorporated in an automobile or the like to constitute a fuel cell vehicle. In this case, the fuel cell stack may be housed in a center console provided between the driver's seat and the passenger seat in the vehicle interior, in addition to the under floor of the vehicle body and the bonnet.

  For example, the fuel cell vehicle disclosed in Patent Document 1 includes a center console extending in the vehicle front-rear direction formed by bulging the floor panel upward between the left and right front seats at a substantially central position in the vehicle width direction. The fuel cell stack is accommodated in the center console such that the height direction of the fuel cell is longer than the width direction and the stacking direction of the fuel cell is the vehicle front-rear direction. In addition, the fuel cell stack is supported by the vehicle body at a position below and above the center of gravity.

JP 2007-15591 A

  By the way, in the fuel cell stack, normally, a communication hole forms an internal manifold formed so as to penetrate in the stacking direction of the fuel cell in order to flow the fuel gas, the oxidant gas, and the cooling medium. Specifically, as shown in FIG. 15, fuel gas supply communication holes 2 a and oxidant gas supply communication holes 3 a are formed at both corners on one end side (for example, the upper side) of the fuel cell 1. A cooling medium supply communication hole 4a is formed between the two. On the other end side (for example, the lower end side) of the fuel cell 1, a fuel gas discharge communication hole 2b and an oxidant gas discharge communication hole 3b are formed at both corners, and a cooling medium discharge communication hole is formed therebetween. 4b is formed.

  A fuel cell stack 5 in which a plurality of fuel cells 1 are stacked is housed in a center console 6 so that the fuel cell stack 5 is protected against a load F from the outside. However, when the center console 6 deforms and interferes with the fuel cell stack 5 when the external load F is very large, the fuel gas supply communication hole 2a is particularly easily deformed. May leak.

  The present invention solves this kind of problem, and with a simple configuration, when the center console and the fuel cell stack interfere with each other, it can absorb the shock and satisfactorily suppress the deformation of the fuel gas communication hole. An object of the present invention is to provide a fuel cell stack for in-vehicle use.

  The present invention relates to an in-vehicle fuel cell stack in which a plurality of fuel cells are stacked while being disposed in a center console provided between a left and right front seat in a vehicle interior.

  Fuel gas communication holes for flowing fuel gas through the fuel cells in the stacking direction are formed at both edges in the gravitational direction of the fuel cell, and at least the fuel on both sides in the horizontal direction of the fuel gas communication hole. An opening or an insertion member is provided through the battery in the stacking direction.

  Moreover, it is preferable that an opening has at least either a cooling-medium communicating hole or an oxidizing agent gas communicating hole.

  Furthermore, the insertion member preferably has at least one of a positioning member for positioning the fuel cells, a joining member for joining the fuel cells, or a cell voltage detection terminal.

  In the present invention, when a relatively large load is applied from the side of the center console, under the deformation action of the opening provided on one side in the horizontal direction of the fuel gas communication hole or under the reinforcement action of the insertion member The load can be absorbed. Accordingly, it is possible to satisfactorily suppress the deformation of the fuel gas communication hole with a simple configuration.

  FIG. 1 is a partial side view of a fuel cell vehicle 10, and FIG. 2 shows that a fuel cell stack 12 according to the first embodiment of the present invention is accommodated in a center console 14 constituting the fuel cell vehicle 10. FIG.

  As shown in FIG. 1, the fuel cell vehicle 10 is provided with a center console 14 positioned between the left and right front seats (driver seat and front passenger seat) 18 a and 18 b in the passenger compartment 16. Extends in the vehicle length direction (arrow L direction) of the fuel cell vehicle 10. The fuel cell stack 12 is efficiently accommodated in the chamber 14a in the center console 14 with a slight gap (see FIG. 2).

  As shown in FIG. 3, the fuel cell stack 12 includes a stacked body 24 in which a plurality of unit cells 22 are stacked in the horizontal direction (arrow A direction). A terminal plate 26a, an insulating plate 28a, and an end plate 30a are sequentially disposed at one end of the stack 24 in the stacking direction (arrow A direction). At the other end in the stacking direction of the stacked body 24, a terminal plate 26b, an insulating plate 28b, and an end plate 30b are sequentially disposed outward. The fuel cell stack 12 is integrally held by a casing 32 including end plates 30a and 30b each having a rectangular shape as end plates.

  As shown in FIG. 4, each unit cell 22 includes an electrolyte membrane / electrode structure (electrolyte / electrode structure) 36 sandwiched between a first metal separator 38 on the anode side and a second metal separator 40 on the cathode side. The The first and second metal separators 38 and 40 have a concavo-convex shape by pressing a metal thin plate into a wave shape.

  The first and second metal separators 38 and 40 are made of, for example, a steel plate, a stainless steel plate, an aluminum plate, a plated steel plate, or a metal plate that has been subjected to a surface treatment for corrosion protection. Further, instead of the first and second metal separators 38 and 40, for example, a carbon separator may be used.

  The upper end edge of the unit cell 22 in the long side direction (gravity direction) (the arrow C direction in FIG. 4) communicates with each other in the arrow A direction to supply an oxidant gas, for example, an oxygen-containing gas. Oxidant gas supply communication hole (opening) 42a, fuel gas, for example, a fuel gas supply communication hole 44a for supplying a hydrogen-containing gas, and a cooling medium supply communication hole (opening) 46a for supplying a cooling medium Are provided along the horizontal direction (arrow A direction).

  An oxidant gas discharge communication hole (opening) 42 b for discharging the oxidant gas, communicated with each other in the direction of arrow A, at the lower edge of the long side direction of the unit cell 22, for discharging the fuel gas A fuel gas discharge communication hole 44b and a cooling medium discharge communication hole (opening) 46b for discharging the cooling medium are provided along the horizontal direction.

  The electrolyte membrane / electrode structure 36 includes, for example, a solid polymer electrolyte membrane 48 in which a perfluorosulfonic acid thin film is impregnated with water, and an anode side electrode 50 and a cathode side electrode 52 that sandwich the solid polymer electrolyte membrane 48. With.

  The anode side electrode 50 and the cathode side electrode 52 are uniformly coated on the surface of the gas diffusion layer with a gas diffusion layer (not shown) made of carbon paper or the like and porous carbon particles carrying a platinum alloy on the surface. An electrode catalyst layer (not shown). The electrode catalyst layers are formed on both surfaces of the solid polymer electrolyte membrane 48.

  A fuel gas passage 54 extending in the direction of arrow C communicates with the fuel gas supply communication hole 44a and the fuel gas discharge communication hole 44b on the surface 38a of the first metal separator 38 facing the electrolyte membrane / electrode structure 36. Is formed.

  On the surface 40a of the second metal separator 40 facing the electrolyte membrane / electrode structure 36, an oxidant gas extending in the direction of arrow C is communicated with the oxidant gas supply communication hole 42a and the oxidant gas discharge communication hole 42b. A flow path 56 is formed. The oxidant gas flow channel 56 has a plurality of wave-shaped flow channel grooves extending in the direction of arrow C.

  Cooling between the surface 40b of the second metal separator 40 and the surface 38b of the first metal separator 38 communicates with the cooling medium supply communication hole 46a and the cooling medium discharge communication hole 46b and extends in the direction of arrow C. A medium flow path 58 is formed.

  A first seal member 60 is integrally formed on the surfaces 38 a and 38 b of the first metal separator 38 around the outer peripheral edge of the first metal separator 38. A second seal member 62 is integrally formed on the surfaces 40 a and 40 b of the second metal separator 40 around the outer peripheral edge of the second metal separator 40.

  As shown in FIG. 3, first and second power extraction terminals 70 a and 70 b are provided extending outward in the stacking direction from the in-plane centers of the terminal plates 26 a and 26 b. The first power extraction terminal 70a penetrates the insulating plate 28a and the end plate 30a and protrudes outside, while the second power extraction terminal 70b penetrates the insulation plate 28b and the end plate 30b and protrudes outside.

  The casing 32 includes end plates 30 a and 30 b that are end plates, a plurality of side plates 74 a to 74 d disposed on the side of the laminate 24, and end portions of the side plates 74 a to 74 d that are close to each other via screws 75. And an angle member 76 that is connected to each other, and a hinge mechanism 78 that connects the end plates 30a and 30b and the side plates 74a to 74d. The side plates 74a to 74d are constituted by thin metal plates.

  The hinge mechanism 78 includes first hinge portions 80a and 80b provided on the end plates 30a and 30b, a second hinge portion 82 provided on the side plates 74a to 74d, the first hinge portions 80a and 80b, and the second hinge portion 82. Are provided with connecting pins 86a and 86b that are inserted alternately.

  An oxidant gas inlet manifold 90a that communicates with the oxidant gas supply communication hole 42a and a fuel gas inlet manifold 92a that communicates with the fuel gas supply communication hole 44a are provided on the upper side of the end plate 30a. An oxidant gas outlet manifold 90b that communicates with the oxidant gas discharge communication hole 42b and a fuel gas outlet manifold 92b that communicates with the fuel gas discharge communication hole 44b are provided on the lower side of the end plate 30a.

  Although not shown, the end plate 30b is provided with a cooling medium inlet manifold that communicates with the cooling medium supply communication hole 46a and a cooling medium outlet manifold that communicates with the cooling medium discharge communication hole 46b.

  The operation of the fuel cell vehicle 10 configured as described above will be described below.

  First, in the fuel cell stack 12, as shown in FIG. 3, an oxidant gas such as an oxygen-containing gas is supplied from the oxidant gas inlet manifold 90a of the end plate 30a to the oxidant gas supply communication hole 42a, and the fuel gas A fuel gas such as a hydrogen-containing gas is supplied from the inlet manifold 92a to the fuel gas supply communication hole 44a. On the other hand, a cooling medium such as pure water or ethylene glycol is supplied from the cooling medium inlet manifold of the end plate 30b to the cooling medium supply communication hole 46a.

  Therefore, in the stacked body 24, the oxidant gas, the fuel gas, and the cooling medium are supplied in the arrow A direction to the plurality of unit cells 22 that are overlapped in the arrow A direction.

  As shown in FIG. 4, the oxidant gas is introduced into the oxidant gas flow path 56 of the second metal separator 40 from the oxidant gas supply communication hole 42 a, and along the cathode side electrode 52 of the electrolyte membrane / electrode structure 36. Move. On the other hand, the fuel gas is introduced into the fuel gas passage 54 of the first metal separator 38 from the fuel gas supply communication hole 44 a and moves along the anode side electrode 50 of the electrolyte membrane / electrode structure 36.

  Accordingly, in each electrolyte membrane / electrode structure 36, the oxidant gas supplied to the cathode side electrode 52 and the fuel gas supplied to the anode side electrode 50 are consumed by an electrochemical reaction in the electrode catalyst layer, Power generation is performed.

  Next, the oxidant gas consumed by being supplied to the cathode side electrode 52 flows along the oxidant gas discharge communication hole 42b, and is then discharged to the outside from the oxidant gas outlet manifold 90b of the end plate 30a (see FIG. 3). Similarly, the fuel gas consumed by being supplied to the anode side electrode 50 is discharged and flows into the fuel gas discharge communication hole 44b, and is discharged to the outside from the fuel gas outlet manifold 92b of the end plate 30a.

  The cooling medium flows in the direction of arrow C after being introduced into the cooling medium flow path 58 between the first and second metal separators 38 and 40 from the cooling medium supply communication hole 46a. After cooling the electrolyte membrane / electrode structure 36, the cooling medium moves through the cooling medium discharge communication hole 46b and is discharged from the cooling medium outlet manifold of the end plate 30b.

  In this case, in the first embodiment, as shown in FIGS. 2 and 4, a fuel gas supply communication hole 44 a is formed at the approximate center of the upper edge of the unit cell 22 in the direction of gravity, and the unit cell A fuel gas discharge communication hole 44b is formed at substantially the center of the lower end edge in the gravity direction.

  An oxidant gas supply communication hole 42a and a cooling medium supply communication hole 46a are provided on both sides of the fuel gas supply communication hole 44a in the horizontal direction (arrow B direction), and on both sides of the fuel gas discharge communication hole 44b in the horizontal direction. Are provided with an oxidizing gas discharge communication hole 42b and a cooling medium discharge communication hole 46b.

  Therefore, as shown in FIG. 2, when a relatively large external load F is applied from the side of the center console 14, the center console 14 is deformed and contacts the fuel cell stack 12. For this reason, in the fuel cell stack 12, the cooling medium supply communication hole 46a provided near one corner to which the load F is applied is deformed, and the load F can be absorbed.

  Accordingly, it is possible to satisfactorily suppress the deformation of the fuel gas supply communication hole 44a with a simple configuration. Therefore, an effect that fuel gas leakage can be effectively prevented is obtained.

  When a load F1 is applied to the center console 14 from the front seat 18b side, the oxidant gas supply communication hole 42a provided near the other corner of the fuel cell stack 12 is deformed. As a result, the load F1 can be absorbed effectively, and the deformation of the fuel gas supply communication hole 44a is satisfactorily and reliably suppressed.

  FIG. 5 is a schematic cross-sectional explanatory view showing a state in which the fuel cell stack 100 according to the second embodiment of the present invention is accommodated in the center console 14. The same components as those of the fuel cell stack 12 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Similarly, in the third to sixth embodiments described below, detailed description thereof is omitted.

  As shown in FIG. 6, in the unit cell 102 constituting the fuel cell stack 100, the electrolyte membrane / electrode structure 104 is sandwiched between the first metal separator 106 and the second metal separator 108.

  A fuel gas supply communication hole 44a is provided at the upper edge of the unit cell 102 in the gravitational direction, and an oxidant gas supply communication hole 42a and a positioning knock hole are provided on both sides of the fuel gas supply communication hole 44a in the horizontal direction. 110a. A fuel gas discharge communication hole 44b is provided at the lower edge of the unit cell 102 in the gravitational direction, and an oxidant gas discharge communication hole 42b and a positioning knock hole are formed on both sides of the fuel gas discharge communication hole 44b in the horizontal direction. 110b.

  A cooling medium supply communication hole 46a and a cooling medium discharge communication hole 46b are provided at both ends of the unit cell 102 in the arrow B direction, respectively, extending in the arrow C direction.

  The fuel cell stack 100 is configured by stacking a plurality of unit cells 102, and knock pins 112 a and 112 b are integrally inserted into the knock holes 110 a and 110 b of the unit cells 102, respectively. Position each other.

  In the second embodiment configured as described above, as shown in FIG. 5, when a load F is applied from the side of the center console 14, the center console 14 is deformed and comes into contact with the fuel cell stack 100. . At that time, since the center console 14 abuts in the vicinity of the knock pin 112a, the load F can be absorbed under the reinforcing action of the knock pin 112a.

  Thereby, with the simple configuration, the same effects as those of the first embodiment described above can be obtained, for example, deformation of the fuel gas supply communication hole 44a can be satisfactorily suppressed. Note that it is possible to absorb the load F by deformation of the knock hole 110a without using the knock pin 112a.

  FIG. 7 is a schematic cross-sectional explanatory diagram of a state in which the fuel cell stack 120 according to the third embodiment of the present invention is accommodated in the center console 14.

  As shown in FIG. 8, in the unit cell 122 constituting the fuel cell stack 120, the electrolyte membrane / electrode structure 124 is sandwiched between a first metal separator 126 and a second metal separator 128.

  The unit cell 122 is provided with a knock hole 110a at the upper end edge in the gravitational direction and a oxidant gas supply communication hole 42a and a cooling medium supply communication hole 46a at both edge parts in the horizontal direction. Fuel gas supply communication holes 44a and 44a are provided between the oxidant gas supply communication hole 42a and the knock hole 110a, and between the cooling medium supply communication hole 46a and the knock hole 110a, respectively. A knock hole 110b is provided at the center of the lower end edge of the unit cell 122 in the gravity direction, and an oxidant gas discharge communication hole 42b and a cooling medium discharge communication hole 46b are provided at both ends of the horizontal direction. . Fuel gas discharge communication holes 44b and 44b are provided between the oxidant gas discharge communication hole 42b and the knock hole 110b, and between the knock hole 110b and the cooling medium discharge communication hole 46b, respectively. Knock pins 112a and 112b are inserted into the knock holes 110a and 110b.

  In the third embodiment configured as described above, as shown in FIG. 7, when a load F is applied from the side of the center console 14, the cooling medium supply communication hole 46 a configuring the fuel cell stack 120 is deformed. By doing so, the load F can be absorbed. Therefore, the same effects as those of the first and second embodiments can be obtained, such as the fuel gas supply communication hole 44a being effectively prevented from being deformed.

  FIG. 9 is a schematic cross-sectional explanatory view showing a state in which the fuel cell stack 130 according to the fourth embodiment of the present invention is accommodated in the center console 14.

  As shown in FIG. 10, in the unit cell 132 constituting the fuel cell stack 130, the electrolyte membrane / electrode structure 134 is sandwiched between the first metal separator 136 and the second metal separator 138.

  Clip holes 140a and 140a are provided at the upper edge of the unit cell 132 in the direction of gravity close to both corners, and the oxidant gas supply communication hole 42a and the fuel gas supply communication are provided between the clip holes 140a and 140a. A hole 44a is provided. Clip holes 140b and 140b are provided at the lower end edge of the unit cell 132 in the direction of gravity close to both corners, and the oxidant gas discharge communication hole 42b and the fuel gas discharge communication are provided between the clip holes 140b and 140b. And a hole 44b.

  A cooling medium supply communication hole 46a and a cooling medium discharge communication hole 46b are provided at both ends of the unit cell 132 in the arrow B direction. Clips 142 are inserted into the clip holes 140a and 140b, respectively, and are positioned and fixed for each unit cell 132.

  In the fourth embodiment configured as described above, as shown in FIG. 9, when a load F is applied from the side of the center console 14, the center console 14 is deformed and one of the fuel cell stacks 130 is deformed. It contacts the upper corner. At this time, a clip 142 is mounted in the vicinity of the upper corner of this one, and the load F can be received by the rigidity of the clip 142 itself. For this reason, it becomes possible to prevent the deformation of the fuel gas supply passage 44a effectively and reliably.

  FIG. 11 is a schematic cross-sectional explanatory view showing a state in which the fuel cell stack 150 according to the fifth embodiment of the present invention is housed in the center console 14.

  In the unit cell 152 constituting the fuel cell stack 150, as shown in FIG. 12, an electrolyte membrane / electrode structure 154 is sandwiched between a first metal separator 156 and a second metal separator 158.

  A fuel gas supply communication hole 44a is provided at the approximate center of the upper edge of the unit cell 152 in the gravity direction, and a fuel gas discharge communication hole 44b is provided at the approximate center of the lower edge of the unit cell 152 in the gravity direction. It is done. An oxidant gas supply communication hole 42a and a refrigerant air vent hole 160a are provided on both sides in the horizontal direction of the fuel gas supply communication hole 44a. An oxidant gas discharge communication hole 42b and an oxidant gas drain hole 160b are provided on both sides in the horizontal direction of the fuel gas discharge communication hole 44b.

  The air vent hole 160a and the cooling medium discharge communication hole 46b communicate with each other via a passage 162a provided on one end side in the stacking direction of the unit cell 152, while the oxidant gas discharge communication hole 42b and the water drain hole 160b The unit cells 152 communicate with each other via a passage 162b provided on the other end side in the stacking direction.

  In the fifth embodiment configured as described above, as shown in FIG. 11, when a load F is applied from the side of the center console 14, the center console 14 is deformed to the fuel cell stack 150 side and is The fuel cell stack 150 contacts one upper corner of the fuel cell stack 150. At that time, an air vent hole 160a is provided in the vicinity of the contact portion of the center console 14, and the load F can be absorbed by the deformation of the air vent hole 160a. For this reason, deformation of the fuel gas supply communication hole 44a is satisfactorily prevented.

  FIG. 13 is a schematic cross-sectional explanatory view showing a state in which the fuel cell stack 170 according to the sixth embodiment of the present invention is accommodated in the center console 14.

  In the unit cell 172 constituting the fuel cell stack 170, as shown in FIG. 14, the electrolyte membrane / electrode structure 174 is sandwiched between the first metal separator 176 and the second metal separator 178.

  An oxidant gas supply communication hole 42a and a cooling medium supply communication hole 46a are provided along the horizontal direction at the upper edge of the unit cell 172 in the gravitational direction with the fuel gas supply communication hole 44a interposed therebetween. An oxidant gas discharge communication hole 42b and a cooling medium discharge communication hole 46b are provided along the horizontal direction at the lower end edge in the gravity direction of the unit cell 172 with the fuel gas discharge communication hole 44b interposed therebetween.

  As shown in FIGS. 13 and 14, the inner wall surface of the oxidant gas supply communication hole 42 a has a radius of curvature of R 1 on the inner wall surface facing the inside of the unit cell 172, while on the outer side of the unit cell 172. The radius of curvature of R2 is set on the inner wall face. Here, there is a relationship of R1 <R2.

  The fuel gas supply communication hole 44a, the cooling medium supply communication hole 46a, the oxidant gas discharge communication hole 42b, the fuel gas discharge communication hole 44b, and the cooling medium discharge communication hole 46b are similarly configured.

  In the sixth embodiment, as shown in FIG. 13, when a load F is applied from the side of the center console 14, the cooling medium supply communication hole 46 a is deformed and can absorb the load F. In that case, R2 which has a big curvature is provided in the inner wall face toward the outer side of the unit cell 172. For this reason, the absorbed energy when the cooling medium supply communication hole 46a is deformed can be effectively increased, and the deformation of the fuel gas supply communication hole 44a can be more reliably prevented.

It is partial side surface explanatory drawing of a fuel cell vehicle. FIG. 3 is a schematic cross-sectional explanatory diagram of a state in which the fuel cell stack according to the first embodiment of the present invention is accommodated in a center console constituting the fuel cell vehicle. FIG. 2 is a perspective view of the fuel cell stack with a part cut away. It is a disassembled perspective explanatory drawing of the unit cell which comprises the said fuel cell stack. FIG. 5 is a schematic cross-sectional explanatory diagram of a state in which a fuel cell stack according to a second embodiment of the present invention is accommodated in the center console. It is a disassembled perspective explanatory drawing of the unit cell which comprises the said fuel cell stack. It is a schematic sectional explanatory drawing in the state where the fuel cell stack concerning a 3rd embodiment of the present invention was stored in the center console. It is a disassembled perspective explanatory drawing of the unit cell which comprises the said fuel cell stack. It is a schematic sectional explanatory drawing in the state where the fuel cell stack concerning a 4th embodiment of the present invention was stored in the center console. It is a disassembled perspective explanatory drawing of the unit cell which comprises the said fuel cell stack. FIG. 10 is a schematic cross-sectional explanatory diagram of a state in which a fuel cell stack according to a fifth embodiment of the present invention is housed in the center console. It is a disassembled perspective explanatory drawing of the unit cell which comprises the said fuel cell stack. It is a schematic sectional explanatory drawing in the state where the fuel cell stack concerning a 6th embodiment of the present invention was stored in the center console. It is a disassembled perspective explanatory drawing of the unit cell which comprises the said fuel cell stack. It is a schematic sectional explanatory drawing in the state where the general fuel cell stack was accommodated in the center console.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fuel cell vehicle 12, 100, 120, 130, 150, 170 ... Fuel cell stack 14 ... Center console 18a, 18b ... Front seat 24 ... Laminated body 30a, 30b ... End plate 32 ... Casing 36, 104, 124, 134 154, 174 ... Electrolyte membrane / electrode structure 38, 40, 106, 108, 126, 128, 136, 138, 156, 158, 176, 178 ... Metal separator 42a ... Oxidant gas supply communication hole 42b ... Oxidant gas Discharge communication hole 44a ... Fuel gas supply communication hole 44b ... Fuel gas discharge communication hole 46a ... Cooling medium supply communication hole 46b ... Cooling medium discharge communication hole 48 ... Solid polymer electrolyte membrane 50 ... Anode side electrode 52 ... Cathode side electrode 54 ... Fuel gas flow path 56 ... Oxidant gas flow path 58 ... Cooling medium flow paths 74a to 74d ... Plate 76 ... angle members 78 ... hinge structure 102,122,132,172 ... unit cell 110a, 110b ... knock holes 112a, 112b ... knock pin 140a, 140b ... clip holes 142 ... clip 160a ... air vent hole 160 b ... drain hole

Claims (3)

An in-vehicle fuel cell stack that is disposed in a center console provided between the left and right front seats in a vehicle interior and in which a plurality of fuel cells are stacked,
Fuel gas communication holes for flowing fuel gas through the fuel cell in the stacking direction are formed at both ends of the fuel cell in the direction of gravity,
An in-vehicle fuel cell stack, wherein an opening or an insertion member is provided on both sides in the horizontal direction of the fuel gas communication hole so as to penetrate at least the fuel cell in the stacking direction.   2. The fuel cell stack according to claim 1, wherein the opening includes at least one of a cooling medium communication hole and an oxidant gas communication hole.   2. The fuel cell stack according to claim 1, wherein the insertion member has at least one of a positioning member for positioning the fuel cell, a joining member for joining the fuel cells, or a cell voltage detection terminal. In-vehicle fuel cell stack.

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