JP2009004270A - Fuel cell outer case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell outer case capable of suppressing drop in electrical insulation between a fuel cell and the fuel cell case. <P>SOLUTION: The fuel cell outer case for housing a fuel cell is equipped with a fuel cell fitting structure 30, fixed to the fuel cell and a case body 32 to which the fuel cell fitting structure 30 is fit and for housing the fuel cell, the fuel cell attaching structure 30 contains a seat 34 attached to an end plate 24 of the fuel cell with a first bolt 982; a seat plate 36 being fit to the case body 32; and an insulating base 38 which insulates and integrates the seat 34 and the seat plate 36, the insulating base 38 has a bolt hole for inserting the first bolt 82 and a neck part 44 projecting outward from the case body 32. The surface of the insulating base 38 has water repellence. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel cell case, and more particularly, to a fuel cell case including a fuel cell mounting structure fixed to the fuel cell, and a case body to which the fuel cell mounting structure is mounted and which accommodates the fuel cell.

  In recent years, fuel cells have attracted attention as batteries having high efficiency and excellent environmental characteristics. 2. Description of the Related Art In general, a fuel cell generates electric energy by electrochemically reacting hydrogen, which is a fuel gas, with oxygen in the air, which is an oxidant gas. As a result of the electrochemical reaction between hydrogen and oxygen, water is generated.

  Types of fuel cells include phosphoric acid type, molten carbonate type, solid electrolyte type, alkali type, and solid polymer type. Among these, solid polymer fuel cells that have advantages such as startup at normal temperature and quick startup time have been attracting attention. Such a polymer electrolyte fuel cell is used as a power source for a moving body, for example, a vehicle.

  A polymer electrolyte fuel cell is assembled by laminating a plurality of single cells, current collector plates, end plates, and the like. The fuel cell is housed in a fuel cell case in order to ensure dust proofing and waterproofing. The fuel cell case in which the fuel cell is accommodated is fixed to the vehicle body with a frame or the like, for example.

  In Patent Document 1, in a fuel cell mount for elastically supporting a fuel cell on the vehicle body side, an inner bushing and an elastic bushing having a rubber elastic body vulcanized and bonded thereto are fitted into a cylindrical press-fitting of a mounting bracket made of the bracket. It is shown to be press-fitted and assembled inside the part.

JP 2006-275218 A

  By the way, as described above, when a fuel cell mounting structure such as a fuel cell mount is attached to the case main body of the fuel cell case, water or the like is, for example, from the outside of the fuel cell case and the fuel cell mounting structure and the case main body. May penetrate into the inside of the fuel cell case. Thereby, the electrical insulation between the fuel cell and the fuel cell case may be reduced.

  Accordingly, an object of the present invention is to provide a fuel cell case that can suppress a decrease in electrical insulation between the fuel cell and the fuel cell case.

  A fuel cell case according to the present invention includes a fuel cell mounting structure fixed to the fuel cell, and a case main body to which the fuel cell mounting structure is mounted and accommodates the fuel cell. A base that is fixed to the end plate of the fuel cell with a first bolt; a base plate that is fixed to the case body; and an insulating base that insulates and integrates the base and the base plate; A bolt hole into which the first bolt is inserted, and a neck portion protruding outward from the case main body. The case main body includes an opening that avoids the neck portion of the fuel cell mounting structure, and a neck portion of the fuel cell mounting structure. And a cover that covers the fuel cell, and the surface of the insulating base has water repellency.

  In the fuel cell case according to the present invention, the insulating base is formed of silicon rubber or fluorine rubber.

  As described above, according to the fuel cell case of the present invention, it is possible to suppress a decrease in electrical insulation between the fuel cell and the fuel cell case by repelling water on the surface of the fuel cell mounting structure.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing a fuel cell case 10. A fuel cell 20 is accommodated in the fuel cell case 10 shown in FIG. First, the fuel cell 20 will be described. The fuel cell 20 includes a fuel cell stack in which a plurality of single cells 22 and current collectors are stacked, and end plates 24 and 26 placed at both ends of the fuel cell stack.

  The single cell 22 includes an electrolyte membrane, a catalyst layer, a gas diffusion layer, and a separator. Among these, what integrated the electrolyte membrane, the catalyst layer, and the gas diffusion layer is generally called a membrane electrode assembly (MEA).

  The electrolyte membrane has a function of moving hydrogen ions generated on the anode side to the cathode side. As the material of the electrolyte membrane, a chemically stable fluorine-based resin, for example, an ion exchange membrane such as perfluorocarbon sulfonic acid is used.

  The catalyst layer has a function of promoting a hydrogen oxidation reaction on the anode electrode side and an oxygen reduction reaction on the cathode electrode side. The catalyst layer includes a catalyst and a catalyst support. In order to increase the electrode area to be reacted, the catalyst is generally used in the form of particles and attached to the catalyst support. As the catalyst, platinum, which is a platinum group element having a small activation overvoltage, is used for the oxidation reaction of hydrogen and the reduction reaction of oxygen. As the catalyst carrier, a carbon material such as carbon black is used.

  The gas diffusion layer has a function of diffusing a fuel gas such as hydrogen gas or an oxidant gas such as air into the catalyst layer, a function of moving electrons, and the like. For the gas diffusion layer, carbon fiber woven fabric, carbon paper or the like, which is a conductive material, can be used. And a membrane electrode assembly is manufactured by laminating | stacking an electrolyte membrane, a catalyst layer, and a gas diffusion layer, and carrying out heat press etc.

  The separator is stacked on the membrane electrode assembly and has a function of separating the fuel gas and the oxidant gas in the adjacent unit cell 22. Further, the separator has a function of electrically connecting adjacent single cells 22. The separator is formed with a gas flow path through which a fuel gas or an oxidant gas flows, a cooling medium flow path for cooling a single cell 22, for example, a flow of a cooling medium such as LLC (Long Life Coolant) or cooling water, and the like. Yes. The separator is formed of a metal material such as titanium or stainless steel, which is a conductive material, or a carbon material.

  The current collector plate has a function of extracting a direct current generated in the plurality of unit cells 22 to be stacked. For the current collector plate, a metal material such as stainless steel or copper, a carbon material, or the like, which is a conductive material, is used. Further, a metal sheet material such as stainless steel or copper may be plated with gold and used.

  The end plates 24 and 26 are disposed at both ends of the fuel cell stack. The end plates 24 and 26 are made of a metal material such as stainless steel, for example. The end plates 24 and 26 are provided with a supply port for supplying fuel gas, an oxidant gas, and a cooling medium, or a discharge port for discharging.

  Next, the fuel cell case 10 will be described. The fuel cell case 10 includes a fuel cell mounting structure 30 fixed to the fuel cell 20, and a case main body 32 to which the fuel cell mounting structure 30 is mounted and which houses the fuel cell 20.

  The fuel cell mounting structure 30 is attached to the case main body 32 and has a function of insulating between the fuel cell case 10 and the fuel cell 20. The fuel cell mounting structure 30 has a function of absorbing vibration when the fuel cell 20 is vibrated. The fuel cell mounting structure 30 supports, for example, one end on the lower surface of one end plate 24, the other end on the lower surface of one end plate 24, and a substantially center on the lower surface of the other end plate 26. Attach to position. As described above, by supporting the fuel cell 20 at three points, it is possible to suppress the twisting of the fuel cell 20 and to prevent the leakage of the coolant due to the deviation of the stacked single cells 22. Of course, depending on other conditions, the arrangement of the fuel cell mounting structure 30 is not limited to the above arrangement.

  FIG. 2 is a diagram showing a configuration of the fuel cell mounting structure 30, FIG. 2A is a plan view of the fuel cell mounting structure 30, and FIG. 2B is a fuel cell mounting structure 30. FIG. The fuel cell mounting structure 30 includes a seat 34 that is fixed to the end plates 24 and 26 of the fuel cell 20 with a first bolt, a seat plate 36 that is fixed to the case body 32, a seat 34 and a seat plate 36. And an insulating base body 38 that insulates and integrates them.

  The pedestal 34 has a flange portion that contacts the end plates 24 and 26 of the fuel cell 20 and a cylindrical portion 39 into which the first bolt is inserted. The seat plate 36 is provided with two second bolts 40 that are fixed to the case body 32. The seat 34 and the seat plate 36 are formed using a metal material such as an iron alloy or an aluminum alloy, for example.

  The insulating base 38 has a function of insulating and integrating the seat 34 and the seat plate 36. The insulating base 38 is formed with a bolt hole 42 into which the cylindrical portion 39 of the seat 34 into which the first bolt is inserted. The insulating base 38 has a neck portion 44 that protrudes outward from the case main body 32. An insulating material is used for the insulating base 38 to insulate the seat 34 and the seat plate 36. The insulating base 38 is preferably made of an elastic material such as a rubber material in order to absorb vibration when the fuel cell is vibrated.

  For the insulating base 38, for example, a rubber material such as chloroprene rubber (CR), nitrile rubber (NBR), styrene butadiene rubber (SBR), silicon rubber, ethylene propylene diene rubber (EPDM), or fluorine rubber is used. Of course, a thermoplastic elastomer or the like may be used for the insulating base 38 and is not limited to the above materials. The fuel cell mounting structure 30 is integrally formed by, for example, injecting and crosslinking unvulcanized rubber, which is a raw material of the insulating base 38, into a mold in which the seat 34 and the seat plate 36 are placed. The

  The surface of the insulating substrate 38 is subjected to water repellent treatment with a water repellent material. Since the surface of the insulating base 38 has water repellency, even if water or the like adheres to the fuel cell mounting structure, it repels water and disperses as water droplets. This is because a decrease in electrical insulation is suppressed. The water repellent treatment is performed, for example, by coating the surface of the insulating base 38 with a water repellent material such as a fluorine material or a silicon material. For example, polytetrafluoroethylene (PTFE) or the like is used as the fluorine material. The insulating base 38 is preferably molded from a water-repellent rubber material such as silicon rubber or fluorine rubber. This is because the water repellent treatment on the surface of the insulating base 38 can be omitted.

  The insulating base 38 is provided with a plurality of seal members 46, 47, 48 on the case body 32 side in order to prevent water and the like from entering from the outside of the fuel cell case 10. The sealing members 46, 47, 48 are preferably molded from an elastic material such as a rubber material. This is because water or the like can be sealed by the elastic deformation of the seal members 46, 47, and 48. Of course, depending on other conditions, the seal members 46, 47, 48 are not limited to elastic materials.

  The seal members 46, 47, 48 are formed integrally with the insulating base 38 by providing a projection on the case body 32 side of the insulating base 38, for example. Since the insulating base 38 is made of a rubber material or the like, the intrusion of water can be suppressed by the elastic deformation of the protrusion formed on the case body 32 side of the insulating base 38. Further, a sealing groove may be formed on the case base 32 side of the insulating base 38, and sealing members 46, 47 and 48 formed of a rubber material such as an O-ring may be fitted into the sealing groove. Furthermore, the sealing members 46, 47, 48 may be joined to the insulating base 38 with an adhesive or the like. Depending on other conditions, the seal members 46, 47, 48 may be attached to the case main body 32.

  FIG. 3 is a view showing the arrangement of the seal members 46, 47 and 48. FIG. 3 is a schematic view of the fuel cell mounting structure 30 shown in FIG. 2 as viewed from the case main body 32 side. Seal members 46, 47, 48 are provided at a plurality of locations on the insulating base 38. The seal member 46 is provided on the outer periphery of the insulating base 38, and the seal member 47 is provided on the outer periphery of the neck 44 in the insulating base 38. Thereby, water or the like can be prevented from entering the inside of the fuel cell case 10 from the outside of the insulating base 38. The seal member 48 is preferably provided on the outer periphery of the second bolt 40. By providing the sealing member 48 on the outer periphery of the second bolt 40, it is possible to further suppress the intrusion of water from around the second bolt 40 to the inside of the case main body 32, thereby improving the sealing performance. In FIG. 3, since the 2nd volt | bolt 40 is provided in two places, the sealing member 48 is also provided in two places.

  The case main body 32 is attached with the fuel cell mounting structure 30 and has a function of accommodating the fuel cell 20. FIG. 4 is a view showing a case main body 32 that houses the fuel cell 20. The case body 32 is divided into two parts, and FIG. 4 shows the lower part of the case body 32. The case body 32 is provided with a flange portion 52, and the flange portion 52 is provided with a plurality of fastening holes 54 for fastening the upper portion and the lower portion with fastening members such as bolts. The case main body 32 can be formed by plastic working or the like using a metal material such as an iron alloy or an aluminum alloy, for example. Of course, the case main body 32 may be integrally formed without being divided into two.

  The inner surface of the case main body 32 is preferably covered with an insulating rubber material or synthetic resin material. This is because the insulation between the fuel cell 20 and the fuel cell case 10 can be secured by coating the inner surface of the case body 32 with an insulating material. The case main body 32 is provided with a cable hole 56 for taking out a cable such as a ground wire.

  The case body 32 is preferably provided with a reinforcing member 58 at the attachment position of the fuel cell attachment structure 30. This is because the load of the fuel cell 20 is concentrated on the mounting position of the fuel cell mounting structure 30 in the case body 32. For example, when the fuel cell attachment structure 30 is attached to the case body 32 at three places, the load of the fuel cell 20 is concentrated at the three attachment positions, so that the reinforcing material 58 is provided at the three attachment positions. Thus, the case body 32 can be reinforced. As the reinforcing material 58, a rib formed of a metal material such as an iron alloy or an aluminum alloy is used. The reinforcing material 58 is joined to the case body 32 by, for example, welding.

  The case body 32 is formed with an opening 60 that avoids the neck portion 44 of the fuel cell mounting structure 30. When the fuel cell mounting structure 30 is attached to the case body 32 at, for example, three places, the opening 60 is formed at the case body 32 at three places. The opening 60 is formed in, for example, a substantially circular shape or a substantially polygonal shape. And the 2nd bolt hole 62 for inserting the 2nd volt | bolt 40 is provided in the vicinity of the opening 60 formed in the case main body 32, for example at two places. The opening 60 and the second bolt hole 62 can be formed by drilling the case body 32 by machining of a general metal material.

  The case body 32 is provided with a cover that covers the neck 44 of the fuel cell mounting structure 30. FIG. 5 is a cross-sectional view showing a cover 70 that covers the neck 44 of the fuel cell mounting structure 30. By providing the cover 70, it is possible to prevent water and dust from entering from the outside of the case body 32 to the inside of the case body 32. Further, since the first bolt fastened to the end plates 24 and 26 of the fuel cell 20 is inserted into the bolt hole 42 at the neck 44 of the fuel cell mounting structure 30, the cover 70 is provided to provide the first bolt and Can be prevented. As shown in FIG. 5, the cover 70 includes a cover body 72 that houses the neck portion 44 of the fuel cell mounting structure 30, and a flange 74 that is provided around the cover body 72. The flange 74 is provided with two second bolt holes 76 through which the second bolt 40 is inserted. For example, the cover 70 is formed integrally with an iron alloy sheet, an aluminum alloy sheet, or the like by plastic working such as press working.

  FIG. 6 is a view showing an attachment method for attaching the cover 70 to the case main body 32. The cover 70 is attached from the inside of the case body 32 as shown in FIG. The cover main body 72 is fitted into an opening 60 formed in the case main body 32. The flange 74 of the cover 70 is fixed to the inner surface of the case main body 32. The cover 70 is attached so that the second bolt holes 62 provided in the flange 74 substantially coincide with the second bolt holes 62 provided in the case main body 32. Thus, the cover 70 is positioned on the case body 32 by fitting the cover body 72 into the opening 60 of the case body 32 and bringing the flange 74 into contact with the inner surface of the case body 32. The cover 70 is fixed to the case body 32 by welding or the like.

  7 is a cross-sectional view showing the case main body 32 to which the cover 70 is attached. FIG. 7A is a cross-sectional view taken along line AA in FIG. 6, and FIG. 7B is a cross-sectional view taken along line B- in FIG. It is B sectional drawing. As shown in FIG. 7A or 7B, the cover main body 72 is fitted into the opening 60 provided in the case main body 32, and the flange 74 abuts against the inner surface of the case main body 32. Is positioned. At this time, the second bolt hole 76 provided in the flange 74 substantially coincides with the second bolt hole 62 provided in the case body 32. And it is preferable that the welding part 80 of the flange 74 and the inner surface of the case main body 32 is provided avoiding the position where the sealing members 46, 47, 48 formed on the insulating base 38 are provided. Thereby, since it can avoid that the sealing members 46, 47, and 48 and the welding part 80 overlap, the sealing performance by the sealing members 46, 47, and 48 improves. The welded portion 80 between the flange 74 and the inner surface of the case main body 32 is provided on the outer periphery of the flange 74 as shown in FIG. 7A or 7B, for example.

  Next, a method for attaching the fuel cell 20 to the fuel cell case 10 will be described.

  FIG. 8 is a cross-sectional view showing a state in which the fuel cell 20 is attached to the case main body 32 with the fuel cell attachment structure 30. As described above, the cover 70 is attached to the case main body 32 with the flange 74 fixed to the inner surface of the case main body 32 by welding. First, the first bolt 82 inserted into the seat 34 of the fuel cell mounting structure 30 is fastened to the end plate 24 of the fuel cell 20, and the fuel cell mounting structure 30 is fixed to the fuel cell 20. Next, the neck 44 of the fuel cell mounting structure 30 is accommodated in the cover main body 72, and the two second bolts 40 provided on the seat plate 36 of the fuel cell mounting structure 30 are connected to the flange 74 of the cover 70 and the case main body. 32 is inserted into the second bolt holes 62 and 76 provided in the second bolt hole. Then, the fuel cell mounting structure 30 fixed to the fuel cell 20 is fixed to the case main body 32 by the second bolt 40 and the nut 84. As a result, the fuel cell mounting structure 30 fixed to the fuel cell 20 is attached to the case body 32, and the fuel cell 20 is accommodated in the fuel cell case 10.

  Next, the operation of the fuel cell case 10 in the above configuration will be described.

  FIG. 9 is a diagram showing the fuel cell mounting structure 30 to which water has adhered, FIG. 9 (A) is a plan view of the fuel cell mounting structure 30 to which water has adhered, and FIG. It is sectional drawing of the fuel cell attachment structure 30 to which water adhered. As shown in FIG. 9A or 9B, since the surface of the insulating base 38 has water repellency, the water adhering to the fuel cell mounting structure 30 is repelled to form water droplets 86. scatter. The water droplets 86 are removed from the fuel cell mounting structure 30 by, for example, dropping downward vertically. Accordingly, water can be prevented from continuously adhering along the surface of the fuel cell mounting structure 30 and a current path can be prevented from forming, so that electrical insulation between the fuel cell 20 and the fuel cell case 10 can be prevented. Is suppressed.

  Next, another fuel cell case will be described. In addition, the same code | symbol is attached | subjected to the same element and detailed description is abbreviate | omitted. The fuel cell case includes a fuel cell mounting structure 90 and a case body 32. FIG. 10 is a cross-sectional view showing a state in which the fuel cell 20 is attached to the case body 32 with the fuel cell attachment structure 90.

  The liquid receiver 92 has a function of collecting water leaked from the fuel cell 20. FIG. 11 is a view showing the fuel cell 20 provided with the liquid receiver 92. The liquid receiver 92 is disposed vertically below the fuel cell 20. The liquid receiver 92 is attached to, for example, one end plate 24 and the other end plate 26 of the fuel cell 20. Returning to FIG. 10 again, the liquid receiver 92 has a hole 94 above the fuel cell mounting structure 90. The hole 94 has a function of dropping water stored in the liquid receiver 92 onto the fuel cell mounting structure 90.

  The fuel cell mounting structure 90 includes a seat 34, a seat plate 36, and an insulating base 96. The insulating base 96 is water repellent, and the surface of the insulating base 96 has water repellency. Here, on the surface of the insulating base 96, a liquid flow path 98 is formed with a predetermined width for transporting water dropped from a hole 94 provided in the liquid receiver 92. The water dropped from the hole 94 of the liquid receiver 92 is conveyed along the liquid flow path 98 formed on the surface of the insulating base 96, so that the electric insulation between the fuel cell 20 and the fuel cell case is slightly increased. Therefore, it is possible to detect earlier that water leaks from the fuel cell 20. Here, in order to ensure the necessary electrical insulation between the fuel cell 20 and the fuel cell case, the liquid channel 98 is formed with a narrower width.

  The liquid channel 98 is formed by subjecting the surface of the insulating base 96 having water repellency to a hydrophilic treatment with a predetermined width. For the hydrophilic treatment, a hydrophilic material such as a silica-based material or a titanium oxide-based material is used. The liquid channel 98 is formed by, for example, applying a titanium oxide coating agent or the like to the surface of the insulating base 96 with a predetermined width. Further, the liquid flow path 98 may be formed by performing a water repellent treatment except for a portion where the liquid flow path 98 is formed when the insulating base 96 is subjected to the water repellent treatment.

  Next, the operation of the fuel cell case in the above configuration will be described.

  FIG. 12 is a diagram illustrating the operation of the fuel cell case. When cooling water or the like leaks from the fuel cell 20, the water 100 is first stored in the liquid receiver 92. The water 100 stored in the liquid receiver 92 falls from the hole 94 of the liquid receiver 92 to the fuel cell mounting structure 90. The water 100 that has dropped onto the fuel cell mounting structure 90 is transported through the liquid flow path 98 formed on the surface of the insulating base 96 and comes into contact with the case main body 32. Thereby, since the electrical insulation is slightly lowered between the fuel cell 20 and the fuel cell case, it is possible to detect water leakage from the fuel cell 20. In addition, since the liquid flow path 98 is formed with a narrower width so as to ensure necessary electrical insulation between the fuel cell 20 and the fuel cell case, safety is ensured.

  FIG. 13 is a view showing a fuel cell mounting structure 90 to which water is attached, FIG. 13 (A) is a plan view of the fuel cell mounting structure 90 to which water is attached, and FIG. It is sectional drawing of the fuel cell attachment structure 90 to which water adhered. As shown in FIG. 13 (A) or FIG. 13 (B), the water 100 dropped from the hole 94 of the liquid receiver 92 is transported along the liquid flow path 98 formed in the insulating base 96 and comes into contact with the case main body 32. To do. On the other hand, since portions other than the liquid flow path 98 formed in the insulating base 96 have water repellency, water is repelled to form water droplets 86 which are dispersed and removed.

  As described above, according to the above configuration, since the surface of the insulating base in the fuel cell mounting structure has water repellency, the electric power between the fuel cell and the fuel cell case is repelled by repelling water attached to the fuel cell mounting structure. A decrease in insulation is suppressed.

  According to the above configuration, by forming the liquid flow path for flowing water on the surface of the insulating substrate having water repellency, a decrease in electrical insulation between the fuel cell and the fuel cell case can be detected. Even if water leaks, it can be detected more quickly. Moreover, since the liquid flow path is formed with a width that provides the necessary electrical insulation between the fuel cell and the fuel cell case, safety is ensured.

In embodiment of this invention, it is a figure which shows a fuel cell case. In embodiment of this invention, it is a figure which shows the structure of a fuel cell attachment structure. In embodiment of this invention, it is a figure which shows arrangement | positioning of a sealing member. In embodiment of this invention, it is a figure which shows the case main body which accommodates a fuel cell. In embodiment of this invention, it is sectional drawing which shows the cover which covers the neck part of a fuel cell attachment structure. In embodiment of this invention, it is a figure which shows the attachment method which attaches a cover to a case main body. In embodiment of this invention, it is sectional drawing which shows the case main body with which the cover was attached. In embodiment of this invention, it is sectional drawing which shows the state which attached the fuel cell to the case main body with the fuel cell attachment structure. In other embodiment of this invention, it is a figure which shows the fuel cell attachment structure to which water adhered. In other embodiment of this invention, it is sectional drawing which shows the state which attached the fuel cell to the case main body with the fuel cell attachment structure. FIG. 5 is a view showing a fuel cell provided with a liquid receiver in another embodiment of the present invention. In other embodiment of this invention, it is a figure which shows the effect | action of a fuel cell case. In other embodiment of this invention, it is a figure which shows the fuel cell attachment structure to which water adhered.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Fuel cell case, 20 Fuel cell, 22 Single cell, 24, 26 End plate, 30, 90 Fuel cell mounting structure, 32 Case main body, 34 Seat base, 36 Seat plate, 38, 96 Insulation base, 39 Cylindrical part, 40 Second bolt, 42 Bolt hole, 44 Neck, 46, 47, 48 Seal member, 52 Flange, 54 Fastening hole, 56 Cable hole, 58 Reinforcing material, 60 Opening, 62, 76 Second bolt hole, 70 Cover, 72 Cover body, 74 flange, 80 weld, 82 1st bolt, 84 nut, 86 water drop, 92 liquid receptacle, 94 holes, 98 liquid flow path, 100 water.

Claims (2)

A fuel cell mounting structure fixed to the fuel cell;
A case main body to which the fuel cell mounting structure is attached and which houses the fuel cell;
With
The fuel cell mounting structure is
A seat fixed to the end plate of the fuel cell with a first bolt;
A seat plate fixed to the case body;
An insulating base for insulating and integrating the seat and the seat plate;
Including
The insulating base is formed with a bolt hole into which the first bolt is inserted, and has a neck portion protruding outward from the case body,
The case body has an opening that avoids the neck of the fuel cell mounting structure,
A cover covering the neck of the fuel cell mounting structure;
Have
A fuel cell case for storing a fuel cell,
A fuel cell case, wherein the surface of the insulating substrate has water repellency. The fuel cell case according to claim 1,
A fuel cell case, wherein the insulating base is formed of silicon rubber or fluorine rubber.

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