CN115498235A

CN115498235A - End plate, shell assembly, fuel cell module, assembling method and vehicle

Info

Publication number: CN115498235A
Application number: CN202210857678.6A
Authority: CN
Inventors: 蒋文彬; 张迪; 李都; 王慧
Original assignee: Dongfeng Motor Group Co Ltd
Current assignee: Dongfeng Motor Group Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-20

Abstract

The application discloses an end plate, a shell body, a fuel cell module, an assembling method and a vehicle, and solves the technical problems that in the prior art, the fuel cell module is complex in structure, complex in assembling steps and high in difficulty. This end plate is used for connecting and has open-ended casing main part, the end plate be equipped with be used for installing fuel cell's the fastening components's of pile installation position with be used for with casing main part location contact and fixed connection's spacing face, just spacing face with during casing main part location contact and fixed connection, the end plate seals casing main part's opening, end plate act as the inlet end plate of pile and/or when blind end plate subassembly accomplishes the fastening pressure equipment, still are used for the closure to have open-ended casing main part and encapsulate the pile jointly with casing main part, have reduced the part quantity of fuel cell module, have reduced the assembly degree of difficulty.

Description

End plate, shell assembly, fuel cell module, assembling method and vehicle

Technical Field

The application relates to the technical field of fuel cells, in particular to an end plate, a shell assembly, a fuel cell module, an assembly method and a vehicle.

Background

In the fuel cell stack structure, the single cell is an essential component thereof. The unit cell is generally composed of a membrane electrode, a bipolar plate, and a seal member. The assembled electric pile can be formed by connecting a plurality of single cells in series, arranging end plates for providing fastening and packaging force at two ends, current collecting plates for collecting and outputting electric energy and insulating plates for isolating the current collecting plates and the end plates. Outside the galvanic pile of accomplishing assembling, the corresponding box of parcel for fixed, the inside and outside spare part of protection box, simultaneously between galvanic pile and the box of accomplishing of assembling, set up high-pressure output structure, like high-pressure copper bar, insulation board, link up the terminal to and low pressure monitoring structure, like voltage patrols the ware, hydrogen concentration sensor, low pressure connect and insert pencil etc. there is corresponding seal structure still, can constitute fuel cell galvanic pile module usually.

The fuel cell module in the prior art has the technical problems of complex structure, complex assembly steps and high difficulty, and limits the production development of the fuel cell to a certain extent.

Disclosure of Invention

In order to solve the technical problems, the application provides an end plate, a shell assembly, a fuel cell module, an assembly method and a vehicle, which reduce the number of parts of the fuel cell module, reduce the assembly difficulty and improve the assembly efficiency of the fuel cell module.

The scheme that realizes this application technical purpose does, this application provides an end plate for the connection has open-ended casing main part, the end plate is equipped with:

the mounting position is used for mounting a fastening assembly of a fuel cell stack;

the limiting surface is used for being in positioning contact with and fixedly connected with the shell body; and when the limiting surface is in positioning contact with and fixedly connected with the shell body, the end plate seals the opening.

In some embodiments, the end plate includes an end plate body and a lap edge continuously disposed on a peripheral surface of the end plate body, the lap edge constitutes the limiting surface, and the mounting position is disposed on the end plate body.

In some embodiments, the end plate body is rectangular, and a pin hole for installing a positioning pin and a threaded hole for installing a connecting piece are arranged on the first side surface of the end plate; the overlapping edges are located on at least the remaining three sides of the end plate body.

In some embodiments, the end plate further comprises an insulation block matched with the bipolar plate in shape, and the insulation block is connected to one end of the end plate body far away from the lap edge; the insulation table is provided with a fluid channel for fluid medium to flow, and the fluid channel penetrates through the end plate body.

In some embodiments, a boss is arranged at one end of the end plate body away from the overlapping edge; the insulation table comprises an insulation sleeve and the fluid channel which are connected, and the insulation sleeve covers the outer surface of the boss.

Based on the same inventive concept, the application also provides a shell assembly of the fuel cell, which comprises a shell body and a shell body, wherein the shell body is provided with a plurality of through holes;

a housing body provided with an accommodating chamber with an opening;

and the limiting surface of the end plate is in positioning contact with the shell body and is fixedly connected with the shell body through a connecting piece, so that the end plate seals the opening.

In some embodiments, the housing body includes a first housing and a second housing enclosing the open receiving cavity.

In some embodiments, the second housing is a flat plate, and the first housing is a cover; the first shell is covered on the second shell;

the end plate is the rectangle, the first side of end plate with the second casing contact, just pass through the connecting piece is connected, spacing face is located on the surplus side of end plate, just spacing face with the shape phase-match of first casing, the spacing face of end plate with first casing passes through the connecting piece is connected.

In some embodiments, the second shell has a convex protrusion relative to the end plate and/or the first shell outer wall.

In some embodiments, the second housing is provided with a bracket for connecting the blind end plate assembly and a support base for mounting the bracket.

In certain embodiments, the second housing and the first housing are both enclosures; the end plate is the rectangle, four sides of end plate are stair structure, stair structure's step face constitutes spacing face.

In some embodiments, the housing assembly further comprises a seal assembly disposed between the retention surface of the end plate and the housing body.

Based on the same inventive concept, the present application also provides a fuel cell module, including,

the shell is formed;

the galvanic pile comprises an air inlet end plate, a dead end plate assembly, a reactor core, a fastening assembly and a current collecting plate assembly; the reactor core, the fastening assembly and the flow collecting plate assembly are positioned in the accommodating cavity; the air inlet end plate and/or the blind end plate assembly is/are the end plate, and the fastening assembly is arranged in the installation position and is connected with the air inlet end plate and the blind end plate assembly.

In some embodiments, the fastening assembly includes at least two fasteners and fastening tabs connected to both ends of the fasteners, the fastening tabs being disposed in the mounting locations.

In certain embodiments, the fastener is a tie rod, the tie rod and the fastening joint being a unitary structure; and/or the fastener is a steel belt, and the steel belt is welded on the connecting part.

Based on the same inventive concept, the application also provides an assembly method of the fuel cell module, which comprises the following steps:

stacking the galvanic pile according to a set sequence, and connecting an air inlet end plate and a blind end plate assembly of the galvanic pile through a fastening assembly to obtain an assembled galvanic pile;

arranging the assembled electric pile in a shell body, connecting the air inlet end plate and the blind end plate assembly with the shell body respectively, and connecting and fixing the air inlet end plate and/or the blind end plate assembly of the end plate with the end face of an opening of the containing cavity of the shell body through a limiting face to encapsulate the shell body to obtain the fuel cell module.

Based on the same inventive concept, the application also provides a vehicle comprising the fuel cell module.

According to the technical scheme, the end plate is used for being connected with the shell body with the opening, the end plate is provided with the mounting position of the fastening assembly used for mounting the fuel cell stack and the limiting surface used for being in positioning contact and fixed connection with the shell body, and when the limiting surface is in positioning contact and fixed connection with the shell body, the end plate seals the opening of the shell body, namely the end plate provided by the application is used as the end plate of the stack to bear fastening force to become a part of the stack, and is connected with the shell body with the opening to form a sealed packaging cavity when the stack is packaged, so that power output of the fuel cell stack is realized in an auxiliary mode, integration of the end plate of the stack and the end plate of the shell of the fuel cell is realized, the types of parts are reduced, the packaging and assembling process of the stack and the shell is simplified, and meanwhile compared with the prior art, the positioning, sealing and fastening of the shell end plate and the air inlet end plate in the prior art are not needed to be considered.

The shell assembly of the fuel cell comprises the end plate and a shell body, wherein the shell body is provided with an accommodating cavity with an opening; spacing face and the contact of casing main part location of end plate, and through connecting piece fixed connection casing main part, so that the end plate seals the opening, the end plate has constituted the casing end plate that the casing constitutes promptly, an end plate installation fastening components and the bearing fastening power that is used for constituting the pile simultaneously, compare in the casing of conventional encapsulation pile, the casing constitution that this application provided provides inclosed encapsulation chamber for the pile on the one hand, on the other hand, the casing is constituteed and is connected in the at least one end of the fastening components of pile, directly provide the fastening power of pile, the casing is constituteed the supplementary power output who has realized the fuel cell pile.

Drawings

Fig. 1 is a schematic structural view of an end plate provided in embodiment 1 of the present application;

FIG. 2 is a side view of the end plate of FIG. 1;

FIG. 3 is a bottom view of the end plate of FIG. 1;

FIG. 4 is a schematic structural diagram of an embodiment of a housing assembly provided in example 2 of the present application;

FIG. 5 is a schematic front view of the housing assembly of FIG. 4;

FIG. 6 is a side view of the housing assembly of FIG. 4

FIG. 7 isbase:Sub>A sectional view A-A of the housing assembly of FIG. 5;

FIG. 8 is a sectional view B-B of the housing assembly of FIG. 6;

FIG. 9 is a schematic structural view of the first housing of FIG. 4;

FIG. 10 is a structural diagram of the first housing of FIG. 9 from another perspective;

FIG. 11 is a schematic structural view of the second housing in FIG. 4;

FIG. 12 is a top view of the second housing of FIG. 11;

FIG. 13 is a schematic front view of the second housing of FIG. 11;

FIG. 14 is a schematic view of the bracket of FIG. 8 disposed in the second housing;

FIG. 15 is a schematic structural diagram of another embodiment of a housing assembly provided in example 2 of the present application;

FIG. 16 is a schematic front view of the housing assembly of FIG. 15;

FIG. 17 is a side view of the housing assembly of FIG. 4;

FIG. 18 isbase:Sub>A sectional view A-A of the housing assembly of FIG. 16;

FIG. 19 is a sectional view B-B of the housing assembly of FIG. 17;

FIG. 20 is a schematic structural view of the first housing of FIG. 15;

FIG. 21 is a structural diagram of the first housing of FIG. 15 from another perspective;

FIG. 22 is a schematic structural view of the second housing of FIG. 15;

FIG. 23 is a schematic view of another perspective structure of the second housing in FIG. 15;

FIG. 24 is a top schematic view of the second housing of FIG. 22;

FIG. 25 is a schematic front view of the second housing of FIG. 22;

FIG. 26 is a bottom schematic view of the second housing of FIG. 22;

fig. 27 is an exploded view of a fuel cell module according to example 3 of the present application, with a stack core omitted;

fig. 28 is an exploded view of a fuel cell module according to example 3 of the present application, in another embodiment, in a state in which a reactor core is omitted;

fig. 29 is a schematic structural view of a fastening assembly of a stack in a fuel cell module provided in embodiment 3 of the present application;

fig. 30 is a block diagram of a vehicle according to embodiment 4 of the present application.

Description of the drawings: 100-end plate, 101-installation position, 102-limit surface, 110-end plate body, 111-first side surface, 112-pin hole, 113-threaded hole, 120-lap joint, 121-installation groove, 130-insulation table, 131-insulation sleeve and 132-fluid channel;

200-housing body, 210-first housing, 211-side plate, 212-operating cover plate, 220-second housing, 221-projection, 230-connecting piece, 240-bracket, 250-supporting table, 260-connecting table;

300-a collector plate assembly; 400-a blind end plate assembly; 500-fastening assembly, 510-fastening, 520-fastening joint, 530-insulating support, 600-high voltage module, 700-low voltage module.

Detailed Description

In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings.

In order to solve the technical problems that the fuel cell module in the prior art is complex in structure, complex in assembly steps and high in difficulty, the application provides an end plate, a shell body assembly, the fuel cell module, an assembly method and a vehicle. The following provides three specific examples to illustrate the details of the present application:

example 1

As shown in fig. 1 to 3, the present embodiment provides an end plate 100 for connecting a casing main body 200 having an opening, the end plate 100 is provided with a mounting position 101 for mounting a fastening assembly of a stack of a fuel cell and a limiting surface 102 for positioning contact and fixed connection with the casing main body 200, and when the limiting surface 102 is positioned contact and fixed connection with the casing main body 200, the end plate 100 closes the opening of the casing main body 200, that is, the end plate 100 provided herein simultaneously serves as the end plate 100 of the stack to bear fastening force to become a part of the stack, and is connected with the casing main body 200 having the opening to form a sealed packaging cavity when the stack is packaged, thereby assisting in achieving power output of the stack of the fuel cell, achieving integration of the end plate 100 of the stack with the end plate 100 of the casing of the fuel cell, reducing the variety of components, simplifying the packaging and assembling process of the stack and the casing, and compared with the prior art, at least one end of the stack is directly positioned and fixed with the casing main body 200, and the whole sealing performance can be ensured without considering positioning, sealing and fastening of the casing end plate and the inlet end plate and the sealing of the casing of the prior art.

In order to simultaneously realize the connection with the housing main body 200 and the connection with the fastening assembly, in some embodiments, the end plate 100 includes an end plate body 110 and a joint edge 120 continuously disposed on the peripheral surface of the end plate body 110, the joint edge 120 forms a limiting surface 102, and the mounting position 101 is disposed on the end plate body 110, so as to ensure that the connection of the end plate 100 with the housing main body 200 and the fastening assembly is not affected by each other.

In order to ensure positioning and connection fixation, in some embodiments, the end plate body 110 is rectangular, and the first side 111 of the end plate 100 is provided with a pin hole 112 for mounting a positioning pin and a threaded hole 113 for mounting a connecting member 230; the overlapping sides 120 are located at least on the remaining three sides of the end plate body 110, and the distribution of the overlapping sides 120 may be adaptively changed depending on the structure of the case main body 200 in particular. Preferably, the first side 111 is a side provided with the mounting position 101, and is connected to the housing by a part of the end plate body 110 extending into the housing main body 200.

Because the end plate needs to be connected with the fastening component as the air inlet end plate and/or the blind end plate component of the fuel cell stack, in order to ensure that the press mounting of the end plate meets the requirements, the number of the mounting positions is at least two, and the mounting positions are at least distributed on the long edge direction of the end plate and are positioned on two long edge side faces opposite to the end plate. In some embodiments, at least two installation positions are arranged on each of the two long side surfaces of the end plate, and the short side surfaces of the end plate can be correspondingly provided with the installation positions according to requirements for installing the fastening components for auxiliary fastening, so that the press fitting and the internal sealing of the galvanic pile are ensured.

In order to limit the degree of freedom of positioning of the end plate 100 to secure the positioning position, it is preferable that the number of pin holes 112 on the end plate 100 is at least 2. The arrangement of the pin holes 112 is not particularly limited in the present application, and as an embodiment, the number of the pin holes 112 is two, one of which has a diameter of 6.2mm and is adapted to the positioning pin of M6, and the other is a kidney-shaped hole adapted to the selected positioning pin, and the kidney-shaped hole extends along the long side direction of the end plate 100.

In order to ensure the sealing of the end plate 100 and the housing body 200 when they are sealed, in the end plate 100 provided in this embodiment, the overlapping edge 120 is provided with a mounting groove 121 for mounting a sealing member on the abutting surface for contacting the housing body 200.

In some embodiments, in order to purge, drain, and prevent internal condensation of the fuel cell module and reduce insulation resistance, the end plate 100 further includes an insulation block 130 adapted to the shape of the bipolar plate, the insulation block 130 is connected to an end of the end plate body 110 away from the joint edge 120; the insulation table 130 is provided with a fluid passage 132 for flowing a fluid medium, and the fluid passage 132 penetrates through the end plate body 110, so that physical isolation from the end plate body 110 is realized through the insulated fluid passage 132, and the insulation resistance of the stack is ensured.

In order to achieve stable arrangement of the insulating stage 130 and ensure position fixation due to the weak rigidity of the insulating structure, in some embodiments, a boss may be disposed at an end of the end plate body 110 away from the overlapping edge 120; the insulating block 130 includes an insulating sleeve 131 and a fluid passage 132 connected thereto, and the insulating sleeve 131 is wrapped around the outer surface of the boss to be fixed and positioned by the end plate body 110 having high rigidity.

The present embodiment does not limit the specific shapes of the insulating stage 130 and the end plate body 100, and both may be matched or mismatched with the shapes of the bipolar plates, respectively. For example, when the bipolar plate is i-shaped, that is, along the long side direction of the bipolar plate, the width of the middle portion of the bipolar plate is smaller than the width of the two end portions of the bipolar plate, and the cross-sectional shape is similar to a dumbbell, in some embodiments, the cross-sections 130 of the end plate body 100 and the insulating block may be rectangular; in some embodiments, the end plate body 100 may have a rectangular shape, and the insulating stand may have an i-shape matching the i-shaped bipolar plate, so that the end plate may fit with the bipolar plate when the stack is fastened and press-fitted. In some embodiments, when the insulating table is in an i shape, the fastening assemblies can be arranged in the middle and at the two ends of the end plate in the long side direction respectively, so that stress on each part of the reactor core of the stack obtained after press mounting is more uniform, and the performance of the fuel cell stack is favorably improved.

The present embodiment does not specifically limit the arrangement manner of the insulation table 130 on the end plate body 110, for example, in some embodiments, the insulation table 130 and the end plate body 110 may have the same shape and size, and a structure corresponding to the installation position 101 is arranged on the circumferential surface of the insulation table 130 to install the fastening assembly. In some embodiments, the insulation block 130 has a size smaller than that of the end plate body 110 to form a stepped structure on the end plate body 110.

The material of the end plate 100 is not particularly limited in this embodiment, as long as the rigidity can be satisfied by the end plate body at the same time, and the insulation can be ensured by the insulating stand. In some embodiments, the end plate body 110 and the bosses on the end plate body 110 may be made of aluminum, and the insulating block 130 may be made of a plastic material meeting requirements, so as to form the aluminum-plastic integrated end plate 100.

Example 2

Based on the same inventive concept, the present embodiment provides a housing assembly of a fuel cell, including the above-described end plate 100 and a housing main body 200 provided with an accommodating chamber with an opening; spacing face 102 and the casing main part 200 location contact of end plate 100, and through connecting piece 230 fixed connection casing main part 200, so that end plate 100 seals the opening, end plate 100 constitutes the casing end plate that the casing constitutes promptly, an end plate 100 installation fastening components and the bearing fastening power that is used for constituting the pile simultaneously, compare in the casing of conventional encapsulation pile, the casing constitution that this application provided provides inclosed encapsulation chamber for the pile on the one hand, on the other hand, the casing constitutes the at least one end of connecting in the fastening components of pile, directly provide the fastening power of pile, the casing is constituteed to assist the power output who has realized the fuel cell pile.

To encapsulate the housing assembly, in some embodiments, the housing assembly further includes a seal assembly disposed between the stop surface 102 of the end plate 100 and the housing body 200.

For easy assembly and disassembly, in some embodiments, the housing body 200 includes a first housing 210 and a second housing 220, and the first housing 210 and the second housing 220 surround an accommodating cavity with an opening. The number of the openings is not limited in this embodiment, and may be one or two, and the structure of the stack may be adjusted correspondingly.

The present application also does not limit the specific structure of the first casing 210 and the second casing 220, for example, in some embodiments, the second casing 220 may be a flat plate, and the first casing 210 is a cover; the first housing 210 is covered on the second housing 220. The end plate 100 is substantially rectangular, the first side surface 111 of the end plate 100 is in contact with the second housing 220 and is connected to the second housing by the connecting member 230, the position-limiting surface 102 is located on the remaining side surface of the end plate 100, the shape of the position-limiting surface 102 matches that of the first housing 210, and the position-limiting surface 102 of the end plate 100 is connected to the first housing 210 by the connecting member 230.

As an embodiment, the second housing 220 is a flat plate, the first side 111 of the end plate 100 and the second housing 220 are positioned by 2 positioning pins and are connected and fixed by 6 connecting members 230, and the connecting members 230 are bolts; as shown, the first side 111 of the end plate 100 has a total of 8 holes, including 6 bolt holes of M6, a dowel hole 112 with a diameter of 6.2mm for fitting a dowel of M6, and a kidney-shaped hole for fitting a dowel. The end plate 100 and the first case 210 are coupled by 12M 6 bolts provided on the overlapping edge 120.

When the second housing 220 is a flat plate, in order to seal and encapsulate, in some embodiments, the end plate 100 is provided with the overlapping edge 120 on three sides except the first side surface 111, and the overlapping edge 120 is provided with a mounting groove 121, and the overlapping gap between the first housing 210 and the second housing 220 is sealed by a sealing strip which is arranged in the mounting groove 121, is rectangular overall, and has a cross section of 0 type. The first housing 210 and the second housing 220 are sealed by a sealing ring having a U-shaped overall cross section of 0.

In order to take advantage of the easy arrangement and connection of the flat plate structure, in some embodiments, the second housing 220 has a convex protrusion 221 opposite to the outer wall of the end plate 100 and/or the first housing 210 for direct connection with an external vehicle body system, and the design does not need an additional system mounting frame, and system accessories (air compressor, water pump, etc.) can be directly fixed on the protrusion 221.

When the inlet end plate and the casing end plate are integrated into the end plate 100 in embodiment 1, the communication between the medium channel of the inlet end plate and the medium channel of the casing end plate and the sealing at the communication position do not need to be considered, so that the assembly difficulty is greatly reduced, and the beneficial effect of the integration of the inlet end plate and the casing end plate into the end plate 100 is much greater than that of the integration of the blind end plate assembly 400 and the casing end plate into the end plate 100. Preferably, at least 1 end plate 100 in embodiment 1 is used as the gas inlet end plate of the stack.

In some embodiments, the second casing 220 may be a cover with four faces, the first casing 210 and the second casing 220 enclose a containing cavity with an opening at one end face, and the end plate 100 serves as both a casing end plate of the casing and an air inlet end plate of the stack. In order to connect and fix the second casing 220 and the dead-end plate assembly 400, in some embodiments, a through hole for the connection member 230 to pass through may be formed in the flat second casing 220, and at this time, an additional sealing structure is required to ensure the sealing property of the enclosed casing.

In some embodiments, in order to avoid increasing the difficulty of assembly, the second housing 220 may further be provided with a bracket 240 for connecting the blind end plate assembly 400 and a support platform 250 for mounting the bracket 240, and the support platform 250 may increase the plate thickness of the portion of the mounting connector 230, by providing a threaded blind hole on the support platform 250 and fixing the bracket 240 at the support platform 250 by a bolt, and then connecting the bracket 240 and the blind end plate assembly 400. The dead end plate assembly 400 is vertically fixed to the second housing 220 by the bracket 240 connected to the second housing 220, which increases the screwing thickness of the second housing 220 and avoids forming a through hole.

In some embodiments, a side window for facilitating human-operated connection between the blind-end current collecting plate and the high-voltage copper bar is provided on the side of the first casing 210 near the blind end of the stack, and the side window is closed by a side plate 211.

In other embodiments, the second housing 220 and the first housing 210 may both be shells; the end plate 100 is rectangular, four side surfaces of the end plate 100 are of a stepped structure, a stepped surface of the stepped structure forms a limiting surface 102, a large section of the stepped structure forms a lap joint edge 120, and a mounting groove 121 for mounting a sealing ring is also formed in the limiting surface 102. The lap gap between the first housing 210 and the second housing 220 is sealed by a sealing strip which is arranged in the mounting groove 121, rectangular overall and 0-shaped in cross section. The first housing 210 and the second housing 220 are sealed by a sealing ring having a U-shaped overall cross section of 0. The connection and positioning structure of the end plate 100 and the first and

second cases

210 and 220 can refer to the second case 220 as a flat plate, and the description thereof is omitted.

In some embodiments, in order to facilitate connection between the high-voltage copper bars and the high-voltage output terminals, the first casing 210 is provided with operation windows along the stacking direction of the stack; the first housing 210 further includes an operation cover 212 for closing the operation window.

In some embodiments, in order to facilitate mounting of structures such as a CVM, a manifold, and a harness, the second housing 220 may further include a connection platform 260 protruding from a surface of the second housing 220, and the connection platform 260 may further include a threaded hole 113, so that a thickness of the second housing 220 for screwing threads is increased, and a through hole in the second housing 220 is avoided.

Example 3

Based on the same inventive concept, the present embodiment provides a fuel cell module, which comprises a stack and the housing of embodiment 2; as shown in fig. 27 to 29, the stack includes an air inlet end plate, a dead end plate assembly 400, a core (obtained by stacking a plurality of single cells in series, not shown in the figure), a fastening assembly 500, and a collector plate assembly 300; the core, the fastening assembly 500 and the current collecting plate assembly 300 are positioned in the accommodating cavity; the air inlet end plate and/or the dead end plate assembly 400 adopts the end plate 100 in embodiment 1 or embodiment 2, the fastening assembly 500 is arranged in the installation position 101 and is connected with the air inlet end plate and the dead end plate assembly 400, the fuel cell module naturally has all the beneficial effects of the end plate 100 in embodiment 1 and the shell body composition in embodiment 2, the fuel cell module is different from the shell body in the prior art, the shell body composition realizes the integration of the end plate 100 and the shell body end plate of the electric pile, the types of parts are reduced, the assembly process is simplified, and the assembly difficulty is reduced. Other structures of the fuel cell module not mentioned can refer to the prior art, and the description of the embodiment is omitted.

In order to form a modular connection of the fastening assembly 500 to the intake end plate/blind end plate assembly 400, ensuring consistency and facilitating assembly, in some embodiments, the fastening assembly 500 includes n fasteners 510 and fastening tabs 520 connected to both ends of the fasteners 510, where n is greater than or equal to 2, the side surfaces of the intake end plate and the blind end plate assembly 400 are provided with mounting locations 101, and the fastening tabs 520 are disposed in the mounting locations 101.

To enable the different fastening schemes to be common across the end plate 100 and stack, in some embodiments, the fastener 510 may be a tie rod that is a unitary structure with the fastening joint 520; or the fastener 510 can be a steel belt, the steel belt is welded on the connecting part, two different fastening schemes of the pull rod and the steel belt can be implemented by adopting the same fastening joint 520, proper fastening mode selection and layout can be carried out according to the fastening requirement of the stack, the applicability of the fuel cell stack is enhanced, the same set of non-repeated parts can be used in both the pull rod type and the steel belt welding type, the flexibility of the design and fastening scheme selection of the stack is improved, and the compatibility and switching of the pull rod type and the steel belt welding type are facilitated.

The fastening assembly 500 may be configured such that the fastening member 510 is a tie bar, the fastening member 510 is a steel band, or some of the fastening members 510 are tie bars and the rest of the fastening members 510 are steel bands, and may be adaptively adjusted according to actual fastening requirements.

In some embodiments, the fastening tab 520 includes a connecting mounting portion and a connecting portion, the connecting portion being connected to the fastener 510; the side surfaces of the air inlet end plate and the blind end plate assembly are provided with sinking grooves matched with the fastening joint 520 in shape, and the sinking grooves form mounting positions. The installation part is arranged in the sinking groove and is connected to the air inlet end plate or the dead end plate component through a connecting piece.

To ensure electrical isolation and electrical safety of the fastening assembly 500 from the core, in some embodiments, the fastening assembly 500 further includes an insulating support 530 disposed between the fastener 510 and the core, the insulating support 530 being retained relative to the fastener 510, such as by an interference fit or by a mating boss/dowel pin and counterbore.

Example 4

Based on the same inventive concept, the present embodiment provides an assembling method of a fuel cell module, including the steps of:

and stacking the electric pile according to a set sequence, and connecting an air inlet end plate and a blind end plate assembly 400 of the electric pile through a fastening assembly to obtain the assembled electric pile, wherein the air inlet end plate and/or the blind end plate assembly 400 can adopt the structure of the end plate 100.

The assembled cell stack is placed in the case body 200, the inlet end plate and the dead end plate assembly 400 are connected to the case body 200, and the inlet end plate and/or the dead end plate assembly 400 constituting the end plate 100 are connected and fixed to the open end surface of the accommodating chamber of the case body 200 through the limiting surface 102 to encapsulate the case body 200, thereby obtaining a fuel cell module. The resulting end plate 100 of the fuel cell module serves as an inlet end plate and/or a blind end plate assembly 400 for the stack, while also serving as a housing end plate for the housing assembly that assists in achieving the power output of the fuel cell to close the opening.

Taking the fuel cell module in which the second case 220 is a flat plate and the intake end plate employs the end plate 100 in embodiment 1 as an example, the corresponding assembly sequence is described below:

firstly, connecting a plurality of single cells in series, installing a collector plate assembly 300, an end plate 100 and a blind end plate assembly 400 at two ends of the single cells, and connecting the end plate 100 and a disc spring support plate of the blind end plate assembly 400 through a fastening assembly to form a stack; second, the second case 220 is coupled to the end plate 100 by bolts; the third step is to connect the disc spring support plate with the second case 220 through the bracket 240; and fourthly, respectively installing the low-voltage module 700 (a voltage inspector, a wire harness, a connecting terminal, a low-voltage socket and the like) and the high-voltage module 600 (comprising a high-voltage copper bar, a high-voltage through terminal, an insulating plate and the like) on the first shell 210 and the second shell 220 or the electric pile according to requirements, installing the first shell 210 on the second shell 220 and fixedly connecting the first shell 210, connecting the high-voltage copper bar and the high-voltage through terminal through an operation window on the side surface of the first shell 210, connecting a blind end current collecting plate and a corresponding current collecting plate on the side surface of the first shell 210, installing the operation cover plate 212 and the side plate 211 on the first shell 210, and completing encapsulation.

Example 5

As shown in fig. 30, based on the same inventive concept, the present embodiment provides a vehicle including at least one fuel cell module of embodiment 2, and the details are not repeated herein. The application does not specifically limit the types and styles of vehicles, and can be any vehicle in the prior art, such as a household trolley, a passenger car, a truck and the like.

In order to cooperate with the fuel cell module, the vehicle further comprises a fuel cell auxiliary system, and the fuel cell module and the fuel cell auxiliary system form a fuel cell system together, and the fuel cell system can normally work under the condition of an external fuel supply source.

The fuel cell auxiliary system comprises an air supply subsystem, a fuel supply subsystem, a thermal management subsystem and an automatic control system, wherein the air supply subsystem is used for supplying air to each electric pile of the fuel cell module and selectively performing filtration, humidification, pressure regulation and other treatments on the air; the fuel supply subsystem is used for supplying fuel to each electric pile of the fuel cell module, and selectively carrying out humidification, pressure regulation and other aspects on the fuel so as to convert the fuel into fuel gas suitable for running in the fuel cell pile, taking hydrogen as fuel for example, the fuel supply subsystem is communicated with a hydrogen inlet and a hydrogen outlet of each electric pile of the fuel cell module; and the heat management subsystem is communicated with each electric pile of the fuel cell module to provide cooling liquid to cool and/or heat the electric pile and recover and treat the water generated by the electric pile.

The automatic control system is electrically connected with the fuel cell module, the air supply subsystem, the fuel supply subsystem and the heat management subsystem respectively, and is an assembly comprising a sensor, an actuator, a valve, a switch and a control logic component, so that the fuel cell system can work normally without manual interference. In other embodiments, the fuel cell auxiliary system may further include a ventilation system for mechanically exhausting the gas inside the cabinet of the fuel cell system to the outside. In the present embodiment, the fuel cell auxiliary system in the fuel cell system is not modified, so that reference may be made to the related disclosure of the prior art for more details, which will not be described herein.

Secondly, the vehicle also comprises a DC/DC converter, a driving motor, a motor controller thereof and a vehicle-mounted energy storage device, so as to form a fuel cell power system together with the fuel cell system.

The DC/DC converter is electrically connected with each galvanic pile of the fuel cell system to realize voltage conversion, and the voltage generated by each galvanic pile is regulated and then output to high-voltage devices such as a driving motor, an automobile air conditioner compressor and the like and storage devices such as a battery and the like. The driving motor is electrically connected with the DC/DC converter and is used for providing torque required by vehicle running; the motor controller is electrically connected with the driving motor to control the starting, stopping, torque output and the like of the driving motor, is connected with the whole vehicle controller to receive driving signals sent by the whole vehicle controller, and can also be selectively electrically connected with an automatic control system of the fuel cell system. The vehicle-mounted energy storage device is used for storing electric energy to supply power to other electronic equipment in the vehicle, and is electrically connected with the DC/DC converter, for example, the vehicle-mounted energy storage device is a storage battery.

In the present embodiment, the DC/DC converter, the driving motor and its motor controller, and the vehicle-mounted energy storage device in the fuel cell power system are not modified, so that reference may be made to the related disclosure of the prior art for more details, and the description thereof is omitted here.

In addition, the vehicle needs to include a transmission system that transmits torque to drive the electric motor to rotate the drive wheels, and a fuel storage device for storing fuel that acts like a fuel tank in a fuel-powered vehicle that communicates with a fuel supply subsystem of the fuel cell system via a conduit.

Thus, the vehicle may be a hydrogen energy vehicle or a hydrogen energy + charged hybrid electric vehicle. Since the specific structure of the vehicle is not improved in the embodiment, the structure of the vehicle where no change is made in the embodiment can refer to the prior art, and the specific content is not described herein. Thus, the vehicle has all of the features and advantages previously described for the fuel cell module and will not be described in detail herein.

Through the above embodiment, the present application has the following beneficial effects or advantages:

(1) The utility model provides an end plate for connect the casing main part that has the open-ended, the end plate is equipped with the installation position that is used for installing the fastening components of fuel cell's pile and is used for with casing main part location contact and fixed connection's spacing face, and when spacing face and casing main part location contact and fixed connection, the opening of end plate closed casing main part, the end plate that also this application provided bears the fastening force as the end plate of pile simultaneously in order to become a part of pile, simultaneously be connected with the casing main part that has the opening when the pile is sealed and constitute sealed encapsulation chamber, the power output of fuel cell pile has been realized to the assistance, the end plate that has realized the pile is integrated with the end plate of fuel cell's casing, the spare part kind has been reduced, the encapsulation assembly process of pile and casing has been simplified, simultaneously compare in prior art, need not to consider the location and the sealing of casing end plate and the end plate of admitting air among the prior art, the fastening.

(2) The shell assembly of the fuel cell comprises the end plate and a shell body provided with an accommodating cavity with an opening; the spacing face and the casing main part location contact of end plate, and through connecting piece fixed connection casing main part, so that the end plate seals the opening, the end plate has constituted the casing end plate that the casing is constituteed promptly, an end plate installation fastening component who is used for constituting the galvanic pile simultaneously bears the fastening power, compare in the casing of conventional encapsulation galvanic pile, the casing constitution that this application provided provides inclosed encapsulation chamber for the galvanic pile on the one hand, on the other hand, the casing is constituteed and is connected in the fastening component's of galvanic pile at least one end, directly provide the fastening power of galvanic pile, the casing is constituteed the supplementary power take off who has realized the fuel cell galvanic pile.

(3) The fuel cell module comprises a stack and the shell; the electric pile comprises an air inlet end plate, a dead end plate assembly, a reactor core, a fastening assembly and a current collecting plate assembly; the reactor core, the fastening assembly and the flow collecting plate assembly are positioned in the accommodating cavity; the air inlet end plate and/or the blind end plate assembly is the end plate, the fastening assembly is arranged in the installation position and is connected with the air inlet end plate and the blind end plate assembly, namely the fastening assembly is connected with the shell assembly, and the shell assembly is different from a shell in the prior art and can assist in realizing the power output of the fuel cell. Meanwhile, the integration of the end plate of the galvanic pile and the end plate of the shell is realized, the types of parts are reduced, the assembly process is simplified, and the assembly difficulty is reduced.

(4) According to the assembling method of the fuel cell module, the electric pile is stacked according to a set sequence, the air inlet end plate and the blind end plate assembly of the electric pile are connected through the fastening assembly, the electric pile which is assembled is obtained, and at the moment, the air inlet end plate and/or the blind end plate assembly can adopt the end plate structure. The galvanic pile that will assemble the completion is arranged in casing main part, is connected air inlet end plate and blind end plate subassembly with casing main part respectively to air inlet end plate and/or blind end plate subassembly that will constitute the end plate are connected fixedly through the open-ended terminal surface that holds the chamber of spacing face and casing main part, in order to encapsulate casing main part, obtain fuel cell module. The end plate of the resulting fuel cell module serves as an inlet end plate and/or a blind end plate assembly for the stack, and also serves as a housing end plate for the housing assembly to close the opening, which assists in achieving power output of the fuel cell.

(5) The utility model provides a vehicle, including at least one foretell fuel cell module, fuel cell module is through the integrated installation position that is used for installing the fastening components of pile and the spacing face that is used for connecting the casing main part on the end plate for the end plate is used as the air inlet end plate of pile and/or the dead end plate subassembly and is accomplished the fastening pressure equipment in, still is used for sealing to have the open-ended casing main part, and encapsulates the pile jointly with the casing main part, has reduced fuel cell module's part quantity, has reduced the assembly degree of difficulty.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An end plate for connecting a case main body of a fuel cell having an opening, characterized in that the end plate is provided with:

2. The end plate of claim 1, wherein the end plate comprises an end plate body and a bead continuously formed on a peripheral surface of the end plate body, the bead constituting the stopper surface, and the mounting portion is formed on the end plate body.

3. The endplate of claim 2, wherein the endplate body is rectangular and has a first side provided with a pin hole for receiving a locating pin and a threaded hole for receiving a connector; the overlapping edges are located on at least the remaining three sides of the end plate body.

4. The end plate of claim 2, further comprising an insulation block shaped to fit a bipolar plate, the insulation block attached to an end of the end plate body distal from the lap edge; the insulation table is provided with a fluid channel for fluid medium to flow, and the fluid channel penetrates through the end plate body.

5. The end plate of claim 4, wherein an end of the end plate body remote from the overlapping edge is provided with a boss; the insulating table comprises an insulating sleeve and the fluid channel which are connected, and the insulating sleeve covers the outer surface of the boss.

6. A housing composition, comprising;

a housing body provided with an accommodating chamber with an opening;

and, the end plate of any of claims 1-5, wherein the stop surface of the end plate is in positioning contact with the housing body and is fixedly connected to the housing body by a connecting member, so that the end plate closes the opening.

7. The housing assembly of claim 6, wherein the housing body comprises a first housing and a second housing, the first housing and the second housing enclosing the open receiving cavity.

8. The housing assembly of claim 7 wherein said second housing is a flat plate and said first housing is an enclosure; the first shell is covered on the second shell;

9. The housing assembly of claim 8, wherein the second housing has a convex protrusion relative to the end plate and/or the first housing outer wall.

10. The housing assembly of claim 8 wherein said second housing is provided with a bracket for attaching said blind end plate assembly and a support platform for mounting said bracket.

11. The housing assembly of claim 7, wherein the second housing and the first housing are each in the form of a shroud; the end plate is the rectangle, four sides of end plate are stair structure, stair structure's step face constitutes spacing face.

12. A casing assembly according to any one of claims 6 to 11, further comprising a sealing assembly provided between the retention surface of the end plate and the casing body.

13. A fuel cell module, comprising,

the shell composition of any one of claims 6-12;

the electric pile comprises an air inlet end plate, a blind end plate assembly, a reactor core, a fastening assembly and a current collecting plate assembly; the reactor core, the fastening assembly and the collector plate assembly are positioned in the accommodating cavity, the fastening assembly is arranged in the installation position and connects the air inlet end plate and the blind end plate assembly;

wherein the inlet end plate and/or the blind end plate assembly comprise the end plate in the housing assembly.

14. The fuel cell module of claim 13, wherein the fastening assembly includes at least two fasteners and fastening tabs connected to both ends of the fasteners, the fastening tabs being provided in the mounting locations.

15. The fuel cell module of claim 14, wherein the fastener is a tie bar, the tie bar being of unitary construction with the fastening tab; and/or the fastener is a steel belt, and the steel belt is welded on the connecting part.

16. A method of assembling a fuel cell module according to any one of claims 13 to 15, comprising the steps of:

stacking the galvanic pile according to a set sequence, and connecting an air inlet end plate and a dead end plate assembly of the galvanic pile through a fastening assembly to obtain an assembled galvanic pile;

arranging the assembled electric pile in a shell body, and arranging the air inlet end plate and the blind end plate assembly in connection with the shell body respectively, wherein the air inlet end plate and/or the blind end plate assembly of the end plate are connected and fixed with the end face of an opening of the containing cavity of the shell body through a limiting face, so as to encapsulate the shell body, and obtain the fuel cell module.

17. A vehicle characterized by comprising the fuel cell module of any one of claims 13 to 15.