阅读说明：本技术 燃料电池用接线板 (Fuel cell terminal plate ) 是由 山崎壮矩 佐藤研二 栗原卓也 于 2019-05-21 设计创作，主要内容包括：本发明提供一种能够使接线板的构造成为简单的构造的技术。燃料电池用接线板具备：芯板,在与歧管对应的位置具有第1开口部；盖板,在与歧管对应的位置具有第2开口部,至少配置于芯板的燃料电池单元侧的面；以及树脂片,夹设在芯板与盖板之间,在与歧管对应的位置具有第3开口部,配置于与歧管形成区域对置的位置。芯板具有：第1金属板,配置于与发电区域对置的位置；和第2金属板,与第1金属板接合,具有第1开口部,配置于与歧管形成区域对置的位置。盖板与第2金属板分别由耐腐蚀性比第1金属板高的金属材料构成。(The present invention provides a kind of technology for being constructed to simply construct that can make terminal plate.Fuel cell has with terminal plate: core plate, has the 1st opening portion in position corresponding with manifold；Cover board has the 2nd opening portion in position corresponding with manifold, is at least configured at the face of the cell of fuel cell side of core plate；And resin sheet, it is folded between core plate and cover board, there is the 3rd opening portion in position corresponding with manifold, be configured at the position opposed with manifold forming region.Core plate includes the 1st metal plate, is configured at the position opposed with power generation region；It with the 2nd metal plate, is engaged with the 1st metal plate, there is the 1st opening portion, be configured at the position opposed with manifold forming region.Cover board is made of the corrosion resistance metal material higher than the 1st metal plate respectively with the 2nd metal plate.)

1. a kind of fuel cell terminal plate, with the manifold shape that there is the power generation region for being configured with dielectric film and be formed with manifold It is opposed to configure at the cell of fuel cell of the plate in region, wherein have:

Core plate, it is described under the configuration status that fuel cell terminal plate and the cell of fuel cell are opposed to configuration Core plate has the 1st opening portion in position corresponding with the manifold；

Cover board, under the configuration status, the cover board has the 2nd opening portion, and institute in position corresponding with the manifold State the face that cover board is at least configured at the cell of fuel cell side of the core plate；And

Resin sheet is folded between the core plate and the cover board, under the configuration status, the resin sheet with the discrimination Corresponding position is managed with the 3rd opening portion, and the resin sheet is configured at the position opposed with the manifold forming region,

The core plate includes

1st metal plate, under the configuration status, the 1st metal plate is configured at the position opposed with the power generation region；With

2nd metal plate is engaged with the 1st metal plate, has the 1st opening portion, under the configuration status, the described 2nd Metal plate is configured at the position opposed with the manifold forming region,

The cover board is made of the corrosion resistance metal material higher than the 1st metal plate respectively with the 2nd metal plate.

2. fuel cell terminal plate according to claim 1, wherein

The cover board is made of with the 2nd metal plate identical metal material.

3. fuel cell terminal plate according to claim 1 or 2, wherein

With separator, which is folded between the core plate and the cover board, under the configuration status, the isolation Part is configured at the position opposed with the power generation region, and conductive.

4. fuel cell terminal plate according to claim 3, wherein

The separator is made of with the 1st metal plate identical metal material.

5. fuel cell terminal plate according to any one of claims 1 to 4, wherein

1st metal plate has through hole near the 2nd metal plate.

Technical field

The present invention relates to the terminal plates of fuel cell.

Background technique

The construction of terminal plate as fuel cell, such as Patent Document 1 discloses one kind by corrosion resistance height The high aluminium of titanium plate clamping electric conductivity, core plate made of copper construction.

Patent document 1: Japanese Unexamined Patent Publication 2015-88294 bulletin

In the construction of terminal plate disclosed in patent document 1, the surface of core plate is covered by titanium plate, but its side is from titanium plate Expose.If the side of core plate is exposed relative to the manifold of perforation terminal plate, the side of flowing water and core plate is connect in manifold The reason of touching and being likely to become corrosion.Therefore, in patent document 1, the side of core plate is covered by adhesive seal material, construction It is complex.

Summary of the invention

The present invention can be realized as mode below.

(1) according to one method of the present invention, a kind of fuel cell terminal plate is provided, is configured with dielectric film with having Power generation region and be formed with the cell of fuel cell of plate of manifold forming region of manifold and be opposed to configure.The fuel cell Have with terminal plate: core plate is opposed to the configuration shape of configuration in above-mentioned fuel cell terminal plate and above-mentioned cell of fuel cell Under state, there is the 1st opening portion in position corresponding with above-mentioned manifold；Cover board, under above-mentioned configuration status, with above-mentioned manifold pair The position answered has the 2nd opening portion, is at least configured at the face of the above-mentioned cell of fuel cell side of above-mentioned core plate；And resin sheet, It is folded between above-mentioned core plate and above-mentioned cover board, under above-mentioned configuration status, has the 3rd to open in position corresponding with above-mentioned manifold Oral area is configured at the position opposed with above-mentioned manifold forming region.Moreover, above-mentioned core plate includes the 1st metal plate, match above-mentioned It sets under state, is configured at the position opposed with above-mentioned power generation region；With the 2nd metal plate, engages, have with above-mentioned 1st metal plate Above-mentioned 1st opening portion, is configured at the position opposed with above-mentioned manifold forming region under above-mentioned configuration status, above-mentioned cover board with it is upper The 2nd metal plate is stated to be made of the corrosion resistance metal material higher than above-mentioned 1st metal plate respectively.

According to the fuel cell terminal plate of this mode, in the 1st metal plate and the 2nd metal plate of core plate, shape is constituted 2nd metal plate of the 1st opening portion of Cheng Youyu manifold connection is made of the high metal material of corrosion resistance, therefore can also be unfavorable The side of the core plate in the 1st opening portion is coated with resin material etc..Therefore, the construction of terminal plate can be made to be formed as core plate only With cover board via the simple construction of resin chip bonding.

(2) in the fuel cell terminal plate of aforesaid way, it is also possible to above-mentioned cover board with above-mentioned 2nd metal plate by phase Same metal material is constituted.According to this mode, due to be able to suppress the line differences in expansion because of cover board and the 2nd metal plate to cover board with The case where resin sheet between 2nd metal plate applies shear stress.

(3) in the fuel cell terminal plate of aforesaid way, it is also possible to have separator, which is folded in It states between core plate and above-mentioned cover board, the position opposed with above-mentioned power generation region is configured under above-mentioned configuration status, and have and lead Electrically.According to this mode, the thickness uniformizing of terminal plate can be made.

(4) in the fuel cell terminal plate of aforesaid way, be also possible to above-mentioned separator and above-mentioned 1st metal plate by Identical metal material is constituted.According to this mode, it is able to suppress and because of the configuration of separator the electric conductivity of terminal plate is dropped Low situation.

(5) in the fuel cell terminal plate of aforesaid way, it is also possible to above-mentioned 1st metal plate in above-mentioned 2nd metal There is through hole near plate.According to this mode, can reduce when variation has occurred in the temperature of terminal plate because of the 1st metal plate The stress that the joint portion of the 1st metal plate and the 2nd metal plate is applied with the line differences in expansion of the 2nd metal plate.

The present invention can also realize by various modes other than fuel cell terminal plate, such as can also lead to The modes such as the manufacturing method of the fuel cell for having fuel cell terminal plate, fuel cell terminal plate are crossed to realize.

Detailed description of the invention

Fig. 1 is the perspective view for indicating the outline structure of fuel cell.

Fig. 2 is the exploded view for indicating the outline structure of cell of fuel cell.

Fig. 3 is the main view for indicating the outline structure of terminal plate.

Fig. 4 is the cutting portion end view drawing of the IV-IV line in Fig. 3.

Fig. 5 is the cutting portion end view drawing of the V-V line in Fig. 3.

Fig. 6 is the explanatory diagram for indicating the construction of the terminal plate as the 2nd embodiment.

Fig. 7 is the explanatory diagram for indicating the construction of the terminal plate as the 2nd embodiment.

Fig. 8 is the explanatory diagram for indicating the construction of the terminal plate as the 3rd embodiment.

Fig. 9 is the explanatory diagram for indicating the construction of the terminal plate as the 3rd embodiment.

Figure 10 is the explanatory diagram for indicating the construction of the terminal plate as the 4th embodiment.

Figure 11 is the explanatory diagram for indicating the construction of the terminal plate as the 4th embodiment.

Figure 12 is the main view for indicating the outline structure of the terminal plate as the 5th embodiment.

Figure 13 is the cutting portion end view drawing of the XIII-XIII line in Figure 12.

The explanation of appended drawing reference

10... fuel cell；20,21... insulation board；30,31... end plate；100,100a,100b,100c,100d, 101... terminal plate；100t, 101t... terminal；110... core plate；111, the 1st metal plate of 111d...；112... the 2nd metal Plate；113... joint portion；115... the 1st opening portion；120,121... cover board；125... the 2nd opening portion；130,131... resin Piece；135... the 3rd opening portion；140... washer；150... separator；200... cell of fuel cell；210... generating body； 220... resinous framework；230a, 230b... partition；231a, 231b... gas flow path；240... laminated body；250... gas Import road；M1in... manifold；M1out... manifold；M2in... manifold；M2out... manifold；M3in... manifold；M3out... Manifold；GA... power generation region；MA... manifold forming region；TH... through hole.

Specific embodiment

A. the 1st embodiment:

Fig. 1 is indicated comprising fuel electricity of the fuel cell as one embodiment of the present invention including terminal plate 100 The perspective view of the outline structure in pond 10.The direction x shown in FIG. 1, the direction y, the direction z correspond respectively to the direction x, y shown in his figure Direction, the direction z.These directions are mutually orthogonal.Hereinafter, the direction+y is set as direction, the direction-y is set as lower direction.In addition, will Direction along the direction x is known as left and right directions, using+z the direction side of terminal plate 100 as face side, by-z direction side as back Surface side.The moving body such as being equipped on vehicle of fuel cell 10, the electric power source as moving body come using.In addition, fuel cell 10 power supplys that can also be used as fixation type come using.

Fuel cell 10 has the laminated body 240 for being laminated the cell of fuel cell 200 of multiple plates, a butted line Plate 100,101, a pair of of insulation board 20,21 and a pair of end plate 30,31.Fuel cell 10 by by end plate 30, insulation board 20, Terminal plate 100, laminated body 240, terminal plate 101, insulation board 21 and end plate 31 are stacked gradually and are constituted.Fuel cell 10 exists Not shown secure component is applied in the state of fastening pressure along the stacking direction of cell of fuel cell 200 and is kept.

Fuel cell 10 is the solid for receiving the fuel gas containing hydrogen and the supply containing aerobic oxidizing gas and generating electricity High molecular fuel battery.The electric power generated in fuel cell 10 by electrochemical reaction current collection in terminal plate 100,101, And it is taken out from terminal 100t, the 101t for being set to terminal plate 100,101 to external load.Insulation board 20,21 is by rubber, tree The insulating materials such as rouge are formed.End plate 30,31 is formed by metals such as stainless steels.

In fuel cell 10, be formed in the stacking direction (direction z) penetrating end plates 30, insulation board 20, terminal plate 100, with And multiple manifold M1in~M3in, the M1out~M3out of laminated body 240.Manifold M1in is for each cell of fuel cell The fuel gas supply manifold of 200 distribution fuel gas.Manifold M2in is for distributing oxic gas to each cell of fuel cell 200 The oxidizing gas supply manifold of body.Manifold M3in is between being formed in cell of fuel cell 200 and cell of fuel cell The refrigerant supply manifold of refrigerant flow path distribution refrigerant between 200 and terminal plate 100.Manifold M1out is from each fuel Manifold is discharged in the fuel gas that the exhaust gas of fuel gas is discharged in battery unit 200.Manifold M2out is from each cell of fuel cell Manifold is discharged in the oxidizing gas of the exhaust gas of 200 discharge oxidizing gas.Manifold M3out is formed between cell of fuel cell 200, And manifold is discharged in the refrigerant of the refrigerant flow path discharging refrigerant between cell of fuel cell 200 and terminal plate 100.This Outside, in the present embodiment, it in terminal plate 101, insulation board 21 and end plate 31, opens position corresponding with each manifold is not formed Oral area.For example, terminal plate 101 is formed as the flat aluminum plate with terminal 101t.

Fig. 2 is the exploded view for indicating the outline structure of cell of fuel cell 200.Cell of fuel cell 200 has generating body 210, resinous framework 220 and a pair of of partition 230a, 230b.In resinous framework 220 and partition 230a, 230b, respectively with figure The corresponding position 6 manifold M1in~M3in, M1out~M3out shown in 1 is formed with opening portion.

Generating body 210 has dielectric film, the catalyst layer adjacently formed with the two sides of dielectric film respectively, Yi Jiqi Body diffused layer.Dielectric film is the solid macromolecule film that good proton-conducting is shown under moisture state.Electrolyte Film is for example made of the amberplex of fluorine resin.Catalyst layer have the chemical reaction for promoting hydrogen and oxygen catalyst, with And the carbon particle of catalyst is supported.Also by dielectric film and catalyst layer collectively membrane-electrode assembly (MEA (Membrane Electrode Assembly)).Gas diffusion layers are adjacently arranged with the face of catalyst layer respectively.Gas Diffusion layer is the layer for spreading the reaction gas applied to electrode reaction along the face direction of dielectric film, by the diffusion of Porous Layer is constituted with substrate.As diffusion layer substrate, there is conduction using carbon fiber base material, graphite fibre substrate, foam metal etc. The substrate of the Porous of property and gas diffusibility.Also collectively by dielectric film, catalyst layer and gas diffusion layers Film-electrode gas diffusion layer assembly (MEGA (Membrane Electrode Gass-diffusion-layer Assembly))。

Resinous framework 220 is arranged in the resin component of the frame-shaped around generating body 210.As resin component, at this In embodiment, such as use polyethylene terephthalate (PET).But as resin component, poly- third can be also utilized Other various thermoplastic parts such as alkene, polyethylene.Resinous framework 220 in order to from each manifold import or be discharged fuel gas Or oxidizing gas, the gas for having slit-shaped between each manifold and generating body 210 import road 250.Gas imports road 250 to pass through The mode of logical resinous framework 220 is formed.

Partition 230a, 230b are laminated in resinous framework 220 in a manner of clamping generating body 210 and resinous framework 220.At this In embodiment, partition 230a, 230b are conductive, are formed by the high titanium of corrosion resistance.Partition 230a, 230b with power generation Body 210 and gas import the corresponding position in road 250, have gas flow path 231a, the 231b being made of concavo-convex slot.Gas The one end for the manifold side for importing road 250 reveals in manifold when by resinous framework 220 and partition 230a, 230b stacked together Out.In addition, gas imports the other end of 210 side of generating body on road 250 and gas flow path 231a or gas flow path 231b connects It is logical.Therefore, the gas flowed in each manifold imports road 250 and gas flow path 231a, 231b to generating body by gas 210 supplies.

Hereinafter, by generating body 210 (dielectric film) is provided on the in-plane of cell of fuel cell 200 (direction xy) Region be known as " power generation region GA ".In addition, the region for being formed with manifold in the position of side more outer than power generation region GA is claimed For " manifold forming region MA ".In addition, the structure of cell of fuel cell 200 shown in Fig. 2 is an example, if having power generation The cell of fuel cell of region GA and manifold forming region MA, then its structure is not limited to structure shown in Fig. 2.

Fig. 3 is the main view for indicating the outline structure of terminal plate 100.Fig. 4 is the cutting end surface of the IV-IV line in Fig. 3 Figure.Fig. 5 is the cutting portion end view drawing of the V-V line in Fig. 3.The terminal plate 100 from 240 side of laminated body is shown in FIG. 3 State.In Fig. 3, aftermentioned 1st opening portion 115, the 2nd opening portion 125 and the 3rd opening portion 135 are in identical position weight It is folded, therefore them are recorded together in Fig. 3.In addition, in Fig. 3, it is shown by dashed lines for the component that cannot be seen from face side Lead-out wire, and it is labelled with appended drawing reference.

As shown in Figure 4,5, terminal plate 100 has core plate 110, cover board 120 and resin sheet 130.Hereinafter, by terminal plate 100 states (state shown in FIG. 1) for being opposed to configuration with cell of fuel cell 200 are known as " configuration status ".Such as the institute of Fig. 3~5 Show, on cover board 120, configured with for by each manifold and the refrigerant being formed between adjacent cell of fuel cell 200 The washer 140 of flow path sealing.In addition, washer 140 can be configured at cell of fuel cell 200 side adjacent with terminal plate 100, It can be not equipped in 100 side of terminal plate.

As shown in figure 3, core plate 110 is the component of approximately cuboid.As shown in Fig. 3 and Fig. 5, core plate 110 has the 1st gold medal Belong to plate 111 and the 2nd metal plate 112.1st metal plate 111 is configured at opposed with power generation region GA under above-mentioned configuration status Position." position opposed with power generation region GA " can not be with the stringent opposed position power generation region GA, as long as with comprising The opposed position in the region of power generation region GA.As shown in figure 4, in the present embodiment, in the top of the 1st metal plate 111, It is formed with terminal 100t.As shown in figure 3, at the both ends of the 1st metal plate 111, in a manner of clipping the 1st metal plate 111 from left and right It is bonded to 2 the 2nd metal plates 112.In the present embodiment, the 2nd metal plate 112 is relative to 111 laser welding of the 1st metal plate. In addition, the 2nd metal plate 112 can also be engaged relative to the 1st metal plate 111 by adhesive.2nd metal plate 112 is above-mentioned Configuration status under, be configured at the position opposed with manifold forming region MA." position opposed with manifold forming region MA " can Be not with the stringent opposed position manifold forming region MA, as long as the position opposed with the region comprising manifold forming region MA It sets.In the 2nd metal plate 112, the 1st opening portion of the 2nd metal plate 112 is formed through in position corresponding with each manifold 115。

In the present embodiment, the 2nd metal plate 112 is made of the corrosion resistance metal material higher than the 1st metal plate 111. Specifically, in the present embodiment, the 1st metal plate 111 is made of the high copper of conductivity, the 2nd metal plate 112 is by conductivity ratio The titanium that copper is low but corrosion resistance is higher than copper is constituted.As well-known, titanium shows height due to being formed with oxide scale film on surface Corrosion resistance.In addition, the 1st metal plate 111 for example can be also made of silver, aluminium, the 2nd metal plate 112 also can be by because of oxidation Envelope and show highly corrosion resistant stainless steel constitute.The corrosion resistance of 1st metal plate 111 and the 2nd metal plate 112 for example can It is enough to be evaluated based on the electrochemical test for flowing electric current in the sample for being impregnated in fluoric acid etc..For being connect with the 1st metal plate 111 It, also can be respectively by different as long as corrosion resistance is higher than the 1st metal plate 111 respectively for 2 the 2nd metal plates 112 closed Material is constituted.For example, the side in 2 the 2nd metal plates 112 can be made to be made of titanium, another party is made of stainless steel.

Cover board 120 is the component of approximately cuboid, and is the combustion that core plate 110 is at least configured under above-mentioned configuration status Expect the metal plate in the face of 200 side of battery unit.Cover board 120 is formed through in position corresponding with each manifold in cover board 120 The 2nd opening portion 125.Cover board 120 covers core plate 110, contacts in power generation region GA with core plate 110.In the present embodiment, Peripheral portion in the face of 110 side of core plate of cover board 120 is bonded with aftermentioned resin sheet 130, therefore the central portion court of cover board 120 It is recessed to 110 side of core plate, so that the central portion of cover board 120 can be contacted with core plate 110.In order to improve leading for terminal plate 100 Electrically, the preferably thickness of cover board 120 is smaller than the thickness of core plate 110.Thickness of the thickness of cover board 120 relative to core plate 110, such as Being capable of forming is 1/30~1/10, is in the present embodiment 1/20.

In the present embodiment, cover board 120 is made of the corrosion resistance metal material higher than the 1st metal plate 111.It is specific and Speech, in the present embodiment, cover board 120 as the titanium of metal material identical with the 2nd metal plate 112 by constituting.In this way, at this In embodiment, cover board 120 is made of with the 2nd metal plate 112 identical metal material, therefore can reduce terminal plate 100 Manufacturing cost.But cover board 120 can be made of other than titanium, such as also stainless steel.In addition, for cover board 120 and the 2nd For metal plate 112, as long as corrosion resistance is higher than the 1st metal plate 111, it can also be made of different materials.For example, can Make to be made of 120 titanium of cover board, constitutes the 2nd metal plate 112 by stainless steel.

Resin sheet 130 is folded between core plate 110 and cover board 120, the sheet member for the resin that they are bonded.Core It is sealed between plate 110 and cover board 120 by resin sheet 130.Resin sheet 130 is configured at and manifold shape under above-mentioned configuration status At the position that region MA is opposed.In resin sheet 130, be formed through resin sheet 130 in the position opposed with each manifold the 3rd is opened Oral area 135.In the present embodiment, resin sheet 130 is formed as frame-shaped, not only for manifold forming region MA, also for power generation The region (referring to Fig. 4) of the upside of region GA and the region of downside and configure.As resin sheet 130, such as it is able to use tool Adhesive improved polyalkene piece.The thickness of resin sheet 130 is, for example, 2~3 times of the thickness of cover board 120.

For terminal plate 100 for the above-described, for example, engaging the 2nd metal plate relative to the 1st metal plate 111 first 112 and core plate 110 is made, in the resin sheet 130 of a face of made core plate 110 configuration frame-shaped, from configuring cover board thereon 120 and carry out hot press, thus, it is possible to be manufactured.

In the terminal plate 100 of present embodiment described above, the 1st metal plate 111 and the 2nd gold medal of core plate 110 are constituted Belong in plate 112, the metal material that the 2nd metal plate 112 being formed with the 1st opening portion 115 being connected to manifold is high by corrosion resistance Material is constituted.It is therefore not necessary to be coated on the side of the core plate 110 exposed in manifold by resin material etc..As a result, can make to connect The construction of line plate 100 is formed as the simple construction for only engaging core plate 110 via resin sheet 130 with cover board 120, can subtract The manufacturing cost of few terminal plate 100 and the fuel cell 10 using it.

In addition, the 2nd metal plate 112 of composition core plate 110 is with cover board 120 by phase in the terminal plate 100 of present embodiment Same metal material is constituted, therefore the 2nd metal plate 112 is identical as the linear expansion coefficient of cover board 120.As a result, even if in benefit With resin sheet 130 by their generation temperature changes when core plate 110 and 120 hot press of cover board, also inhibit because of the 2nd metal plate 112 Resin sheet 130 with the line differences in expansion of cover board 120 between the 2nd metal plate 112 and cover board 120 applies the feelings of shear stress Condition.As a result, being able to suppress the rupture of resin sheet 130 in the manufacture of terminal plate 100 etc..

B. the 2nd embodiment:

Fig. 6 and Fig. 7 is the explanatory diagram for indicating the construction of the terminal plate 100a as the 2nd embodiment.Fig. 6 is indicated and figure The section of 4 corresponding terminal plate 100a, Fig. 7 indicate the section of terminal plate 100a corresponding with Fig. 5.The terminal plate of present embodiment 100a is different from the terminal plate 100 of the 1st embodiment on the point for being equipped with the separator 150 for having electric conductivity.

In the present embodiment, separator 150 is folded between core plate 110 and cover board 120, in above-mentioned configuration status Under, it is configured at the position opposed with power generation region GA.Separator 150 is formed as the thickness roughly the same with resin sheet 130.Isolation Part 150 is preferably made of the conductivity material higher than cover board 120, in the present embodiment by as the 1st gold medal with core plate 110 The copper for belonging to the identical metal material of plate 111 is constituted.Therefore, by the configuration of separator 150, it is able to suppress leading for terminal plate 100a Electrically reduce.In addition, other than 150 copper removal of separator, such as can be also made of aluminium.

In the terminal plate 100a of present embodiment described above, it is configured with and is isolated between core plate 110 and cover board 120 Part 150, therefore the thickness of terminal plate 100 can be made uniform.It is therefore not necessary to be formed in cover board 120 for ensuring and core plate 110 The recess of contact.Therefore, cover board 120 can be made to be constructed to simply to construct.

In addition, according to the present embodiment, being recessed without being formed in cover board 120, therefore as cover board 120, can directly adopt With the partition 230b for the cell of fuel cell 200 being made of titanium.In this way, by sharing cover board 120 and partition 230b, Neng Gou great The manufacturing cost of width reduction terminal plate 100.In addition, as cover board 120, according to the partition 230b of cell of fuel cell 200, Then it can be readily formed and be formed between cell of fuel cell 200 cold between terminal plate 100 and cell of fuel cell 200 But the cooling flowing path of the identical construction of flow path.

C. the 3rd embodiment:

Fig. 8 and Fig. 9 is the explanatory diagram for indicating the construction of the terminal plate 100b as the 3rd embodiment.Fig. 8 shows with figure The section of 4 corresponding terminal plate 100b, Fig. 9 indicate the section of terminal plate 100b corresponding with Fig. 5.The terminal plate of present embodiment 100b and the 1st embodiment the difference is that, under above-mentioned configuration status, also in the back side (end plate 30 of core plate 110 Side) it is configured with resin sheet 131 and cover board 121.

In the present embodiment, the resin sheet 131 for being configured at the back side of core plate 110 is also configured at and GA pairs of power generation region The part set.That is, in the present embodiment, resin sheet 131 is not formed as frame-shaped, and cover core plate 110 except the 1st opening portion The back side outside 115 is all.In addition, cover board 121 also covered via resin sheet 131 core plate 110 in addition to the 1st opening portion 115 The back side is all.

The terminal plate 100b of the 3rd embodiment from the description above is also configured with resin sheet at the back side of core plate 110 131 and cover board 121, therefore can be improved the intensity of terminal plate 100b.In addition, core plate 110 in addition to the 1st opening portion 115 Back side entirety is covered by resin sheet 131 and cover board 121, therefore is able to suppress the back for constituting the 1st metal plate 111 of core plate 110 The corrosion of surface side.Thus, for example, refrigerant flow path can be configured between terminal plate 100b and insulation board 20, it can be efficiently Cooling terminal plate 100.

D. the 4th embodiment:

Figure 10 and Figure 11 is the explanatory diagram for indicating the construction of the terminal plate 100c as the 4th embodiment.Figure 10 is indicated The section of terminal plate 100c corresponding with Fig. 4, Figure 11 are the sections of terminal plate 100c corresponding with Fig. 5.Present embodiment connects Line plate 100c has the construction of two sides of the terminal plate 100a of the 2nd embodiment and the terminal plate 100b of the 3rd embodiment.That is, The terminal plate 100c of present embodiment has separator 150 between core plate 110 and cover board 120, in addition, in the back of core plate 110 Surface side is configured with resin sheet 131 and cover board 121.According to the terminal plate 100c of the present embodiment of such construction, can play Effect identical with terminal plate 100,100a, 100b of the 1st embodiment~the 3rd embodiment whole.

E. the 5th embodiment:

Figure 12 is the main view for indicating the outline structure of the terminal plate 100d as the 5th embodiment.

Figure 13 is the cutting portion end view drawing of the XIII-XIII line in Figure 12.In the present embodiment, terminal plate 100d is constituted The 1st metal plate 111d near the 2nd metal plate 112 have through hole TH.More specifically, in the 1st metal plate 111d, In The joint portion 113 of 1st metal plate 111d and the 2nd metal plate 112 is configured with more between power generation region GA along joint portion 113 A through hole TH.

In the present embodiment, the diameter of through hole TH is bigger than the thickness of the 1st metal plate 111d, e.g. the 1st metal plate 2~3 times of the thickness of 111d.In addition, each through hole TH with 2~3 times or so of interval of the diameter of through hole TH equally spaced Configuration.In addition, joint portion 113 is 1~3 times or so of the diameter of through hole TH at a distance from each through hole TH.In addition, through hole The shape of TH is not limited to circle, is also possible to polygon.

In the face side of core plate 110, configured with resin sheet 130 and cover board 120 in a manner of covering through hole TH.Core plate 110 back side can also be covered by resin sheet 131 and cover board 121 identically as the 3rd embodiment, the 4th embodiment.

The terminal plate 100d of present embodiment from the description above, when hot press in the manufacture of terminal plate 100d Deng, temperature from high temperature variation be low temperature when, even if because the line differences in expansion of the 1st metal plate 111d and the 2nd metal plate 112 make 1st metal plate 111d is intended to shrink and apply motive force to joint portion 113, also due at the joint portion 113 of the 1st metal plate 111d It nearby is provided with through hole TH, therefore is easy to produce deformation around through hole TH, is able to suppress to apply joint portion 113 and answer Power.Therefore, according to the present embodiment, the 1st metal plate 111d and the 2nd metal plate can be inhibited in the manufacture of terminal plate 100d etc. 112 separation, can be improved the intensity of terminal plate 100d.

F. other embodiments:

In the above-described embodiment, in the end plate 30 of the end side for the side for being configured at fuel cell 10, whole discriminations Tube opening, but different structures can also be formed as.For example, it is also possible to which at least part being configured in above-mentioned 6 manifolds exists 31 side opening of end plate.In this case, position of the construction of terminal plate 101 preferably in addition to forming opening portion corresponding with manifold Except, be formed as and the identical construction of terminal plate 100.

In the above-described embodiment, manifold is formed in the position for clipping power generation region GA on the left and right directions of fuel cell 10 It sets.On the other hand, at least part in each manifold can also be formed in than power generation in the up and down direction of fuel cell 10 Region GA is upper or the position of downside.

The present invention is not limited to above-mentioned embodiments, can be come within the scope of its spirit with various structures It realizes.For example, in order to solve above-mentioned problem part or all or in order to realize a part of above-mentioned effect or complete Portion, the technical characteristic in embodiment corresponding with the technical characteristic in each mode documented by the summary column of invention can be appropriate Ground is replaced, combines.In addition, if what the technical characteristic illustrated not as necessary feature in the present specification, it can It is enough suitably to delete.