阅读说明：本技术 燃料电池堆组件 (Fuel cell stack assembly ) 是由 杨东胜 刘栋栋 王鹏 于 2020-04-29 设计创作，主要内容包括：本发明公开了一种燃料电池堆组件。该燃料电池堆组件包括：电堆与端板模块,所述端板模块位于所述电堆的上端以及下端,所述端板模块包括：端板、绝缘板以及集流板,所述绝缘板位于所述端板与所述集流板之间,所述集流板位于靠近所述电堆的一侧且与所述电堆电连接,所述绝缘板嵌入所述端板中,和/或,所述集流板嵌入所述绝缘板中。根据本发明实施例的燃料电池堆组件,绝缘板与集流板中的至少一个可以嵌入到相邻的部件中,从而可以有效减少端板模块在高度方向上的占用空间,进而可以减少燃料电池堆组件的体积,保证燃料电池堆组件系统的布置便捷、合理。(A fuel cell stack assembly is disclosed. The fuel cell stack assembly includes: galvanic pile and end plate module, the end plate module is located the upper end and the lower extreme of galvanic pile, the end plate module includes: the insulating plate is located the end plate with between the current collector, the current collector is located and is close to one side of galvanic pile and with the galvanic pile electricity is connected, the insulating plate embedding in the end plate, and/or, the current collector embedding in the insulating plate. According to the fuel cell stack assembly provided by the embodiment of the invention, at least one of the insulating plate and the current collecting plate can be embedded into an adjacent part, so that the occupied space of the end plate module in the height direction can be effectively reduced, the volume of the fuel cell stack assembly can be further reduced, and the fuel cell stack assembly system is convenient and reasonable to arrange.)

1. A fuel cell stack assembly, comprising:

a galvanic pile (1);

an end plate module (2), the end plate module (2) being located the upper end and the lower extreme of galvanic pile (1), the end plate module (2) including: the insulating plate is located the end plate with between the current collector, the current collector is located and is close to one side of galvanic pile (1) and with galvanic pile (1) electricity is connected, the insulating plate embedding in the end plate, and/or, the current collector embedding in the insulating plate.

2. A fuel cell stack assembly according to claim 1, wherein said insulating plates are embedded in said end plates and said current collecting plates are embedded in said insulating plates, said current collecting plates having lead-out ears (5) protruding from said insulating plates, said lead-out ears (5) being adapted to be electrically connected to said stack (1).

3. A fuel cell stack assembly according to claim 1 or 2, wherein a side of said end plate facing said insulating plate is provided with an insulating plate receiving groove (6), said insulating plate being embedded in said insulating plate receiving groove (6), a side of said insulating plate facing said collector plate being provided with a collector plate receiving groove (7), said collector plate being embedded in said collector plate receiving groove (7).

4. A fuel cell stack assembly according to claim 3, wherein the depth of the insulating plate receiving groove (6) is not less than the thickness of the insulating plate, and the depth of the current collecting plate receiving groove (7) is not less than the thickness of the current collecting plate.

5. A fuel cell stack assembly according to claim 2, wherein the end plate module (2) comprises: upper end plate module (3) and lower end plate module (4), upper end plate module (3) are located the top of galvanic pile (1), lower end plate module (4) are located the below of galvanic pile (1), upper end plate module (3) include: upper end plate (31), last insulating board (33) and last current collection board (35), lower end plate module (4) includes: a lower end plate (41), a lower insulating plate (42) and a lower current collecting plate (43).

6. A fuel cell stack assembly according to claim 5, wherein the upper end plate (31) and/or the lower end plate (41) is a metal plate.

7. A fuel cell stack assembly according to claim 5, wherein said lower insulating plate (42) is a leaf spring insulating plate, said lower insulating plate (42) being a glass fiber reinforced plate, said lower insulating plate (42) being adapted to absorb deformations of said stack (1).

8. The fuel cell stack assembly of claim 7, wherein the leaf spring insulation panels are one of fiberglass and polyurethane composite panels, fiberglass and epoxy composite panels, fiberglass and vinyl composite panels, or carbon fiber and polyurethane composite panels.

9. A fuel cell stack assembly according to claim 5, wherein said upper end plate (31) is injection molded integrally with said upper insulating plate (33) and/or said lower end plate (41) is injection molded integrally with said lower insulating plate (42).

10. A fuel cell stack assembly according to claim 5, wherein said upper end plate (31) is provided with at least one fixing groove (32), and said upper insulating plate (33) is provided with fixing projections (34) adapted to be fitted with said fixing grooves (32) in a one-to-one correspondence.

Technical Field

The invention relates to the technical field of electrochemical cells, in particular to a fuel cell stack assembly.

Background

The fuel cell stack assembly is a high-efficiency energy conversion power generation device which takes hydrogen as an optimal fuel and directly converts chemical energy in the fuel and oxidant into electric energy in an electrochemical reaction mode without a combustion process, and has the characteristics of lower working temperature, short starting time, high power density, fast load response, no electrolyte loss and the like.

Specifically, both ends of the fuel cell stack assembly are provided with end plate modules, which include: the end plate is a main stressed part of the electric pile during press mounting, the current collecting plate is used for leading current generated by each single cell to an external load, and the insulating plate is positioned between the end plate and the current collecting plate to ensure insulation between the end plate and the current collecting plate.

The split design is mostly adopted between the current insulation plate and the current end plate and the current collecting plate, but the volume of the fuel cell stack assembly can be increased by adopting the split design, so that the arrangement of the fuel cell stack assembly system is difficult.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. To this end, the present invention provides a fuel cell stack assembly whose end plate modules do not increase the volume of the fuel cell stack assembly.

A fuel cell stack assembly according to an embodiment of the present invention includes: galvanic pile and end plate module, the end plate module is located the upper end and the lower extreme of galvanic pile, the end plate module includes: the insulating plate is located the end plate with between the current collector, the current collector is located and is close to one side of galvanic pile and with the galvanic pile electricity is connected, the insulating plate embedding in the end plate, and/or, the current collector embedding in the insulating plate.

According to the fuel cell stack assembly provided by the embodiment of the invention, at least one of the insulating plate and the current collecting plate can be embedded into an adjacent part, so that the occupied space of the end plate module in the height direction can be effectively reduced, the volume of the fuel cell stack assembly can be further reduced, and the fuel cell stack assembly system is convenient and reasonable to arrange.

According to some embodiments of the invention, the insulating plate is embedded in the end plate, and the current collecting plate is embedded in the insulating plate, the current collecting plate having a lead-out ear protruding from the insulating plate, the lead-out ear being adapted to be electrically connected to the stack.

Specifically, the orientation of end plate one side of insulation board is equipped with the insulation board holding tank, the insulation board inlays to be established in the insulation board holding tank, the orientation of insulation board one side of current collector is equipped with the current collector holding tank, the current collector inlays to be established in the current collector holding tank.

Further, the depth of the insulating plate accommodating groove is not less than the thickness of the insulating plate, and the depth of the current collecting plate accommodating groove is not less than the thickness of the current collecting plate.

Specifically, the end plate module includes: upper end plate module and lower end plate module, the upper end plate module is located the top of pile, the lower end plate module is located the below of pile, the upper end plate module includes: upper end plate, last insulation board and go up the current collection board, lower end plate module includes: lower end plate, lower insulating plate and lower current collection board.

Further, the upper end plate and/or the lower end plate are metal plates.

Specifically, the lower insulating plate is a plate spring insulating plate, the lower insulating plate is a glass fiber reinforced plate, and the lower insulating plate is suitable for absorbing deformation of the galvanic pile.

Further, the plate spring insulating plate is one of a glass fiber and polyurethane composite plate, a glass fiber and epoxy resin composite plate, a glass fiber and vinyl resin composite plate or a carbon fiber and polyurethane composite plate.

Specifically, the upper end plate and the upper insulating plate are integrally formed by injection molding, and/or the lower end plate and the lower insulating plate are integrally formed by injection molding.

Specifically, the upper end plate is provided with at least one fixing groove, and the upper insulating plate is provided with fixing protrusions which are suitable for being matched with the fixing grooves in a one-to-one correspondence mode.

Compared with the prior art, the fuel cell stack assembly has the following advantages:

according to the fuel cell stack assembly provided by the embodiment of the invention, at least one of the insulating plate and the current collecting plate can be embedded into an adjacent part, so that the occupied space of the end plate module in the height direction can be effectively reduced, the appropriate volume of the fuel cell stack assembly can be further ensured, and the convenient and reasonable arrangement of a fuel cell stack assembly system is ensured.

According to the fuel cell stack assembly provided by the embodiment of the invention, the lower insulating plate is the plate spring insulating plate and is made of the glass fiber reinforced material, so that the deformation of the stack caused by uneven stress can be absorbed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a fuel cell stack assembly;

fig. 2 is a schematic view of an end plate module.

Reference numerals:

the fuel cell stack assembly 10, the stack 1, the end plate module 2, the upper end plate module 3, the upper end plate 31, the fixing groove 32, the upper insulating plate 33, the fixing protrusion 34, the upper current collecting plate 35, the lower end plate module 4, the lower end plate 41, the lower insulating plate 42, the lower current collecting plate 43, the lead-out lugs 5, the insulating plate accommodating grooves 6, and the current collecting plate accommodating grooves 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A fuel cell stack assembly 10 according to an embodiment of the present invention is described in detail below with reference to fig. 1-2.

Referring to fig. 1, a fuel cell stack assembly 10 according to an embodiment of the present invention includes: pile 1 and end plate module 2, end plate module 2 are located pile 1's upper end and lower extreme, and end plate module 2 includes: the device comprises an end plate, an insulating plate and a current collecting plate, wherein the insulating plate is positioned between the end plate and the current collecting plate, the current collecting plate is positioned at one side close to the galvanic pile 1 and is electrically connected with the galvanic pile 1, and the insulating plate is embedded in the end plate and/or the current collecting plate is embedded in the insulating plate.

That is to say, at least one of the insulating plate and the current collecting plate may be embedded in an adjacent component, so that an occupied space of the end plate module 2 in the height direction may be effectively reduced, and thus a volume of the fuel cell stack assembly 10 may be reduced, and it is ensured that the fuel cell stack assembly 10 system is conveniently arranged.

Preferably, as shown in fig. 1, the insulating plates are embedded in the end plates, and the current collecting plates are embedded in the insulating plates, so that the height of the end plate module 2 can be reduced to the maximum extent, and further the volume of the fuel cell stack assembly 10 is ensured to be moderate, and since the insulating plates and the current collecting plates are embedded, the saved extra height can provide more arrangement space for the stack 1, so that the volumetric power density of the stack 1 can be improved.

In addition, since the current collecting plates are embedded in the insulating plates, the reliability of insulation between the current collecting plates and the end plates is high, thereby ensuring the safety and reliability of the fuel cell stack assembly 10.

According to the fuel cell stack assembly 10 of the embodiment of the invention, at least one of the insulating plate and the current collecting plate can be embedded into an adjacent component, so that the occupied space of the end plate module 2 in the height direction can be effectively reduced, the volume of the fuel cell stack assembly 10 is appropriate, and the convenient and reasonable arrangement of the fuel cell stack assembly 10 system is ensured.

Further, as shown in fig. 2, the current collecting plate has lead-out ears 5 protruding from the insulating plate, and the lead-out ears 5 are adapted to be electrically connected to the stack 1, thereby ensuring that the end plate module 2 can guide the electric power generated by the stack 1 to an external load.

Specifically, as shown in fig. 2, one side of the end plate facing the insulating plate is provided with an insulating plate receiving groove 6, and the insulating plate is embedded in the insulating plate receiving groove 6, thereby ensuring that the insulating plate can be embedded in the insulating plate.

One side of the insulation board towards the collector plate is provided with a collector plate accommodating groove 7, and the collector plate is embedded in the collector plate accommodating groove 7, so that the collector plate can be embedded into the insulation board.

Further, the depth of the insulating plate accommodating grooves 6 is not less than the thickness of the insulating plate, and the depth of the current collecting plate accommodating grooves 7 is not less than the thickness of the current collecting plate, so that the insulating plate can be completely embedded into the end plate in the height direction, the current collecting plate can be completely embedded into the insulating plate in the height direction, and the height of the end plate module 2 is guaranteed to be low to the maximum extent.

In a specific embodiment, one side of insulation board holding tank 6 that is close to the insulation board is equipped with gets the groove of putting that links to each other with the edge of end plate, and the insulation board is equipped with and is suitable for and gets the groove complex and put the arch with getting to be convenient for the insulation board is got from insulation board holding tank 6 and is put.

Specifically, as shown in fig. 1-2, the end plate module 2 may include: upper end plate module 3 and lower end plate module 4, upper end plate module 3 are located the top of galvanic pile 1, and lower end plate module 4 is located the below of galvanic pile 1, and upper end plate module 3 includes: upper end plate 31, upper insulation plate 33 and upper current collecting plate 35, lower end plate module 4 includes: a lower end plate 41, a lower insulating plate 42, and a lower current collecting plate 43.

Further, the upper end plate 31 and/or the lower end plate 41 are metal plates.

In the embodiment, the end plate is used as a main stress component of the stack 1 during press mounting, so that the upper end plate 31 and/or the lower end plate 41 are/is made of metal plates, which can ensure better strength of the end plate, thereby being not easy to deform and break.

Specifically, the lower insulating plate 42 is a plate spring insulating plate, the lower insulating plate is a glass fiber reinforced plate, and the lower insulating plate 42 is suitable for absorbing the deformation of the pile 1, so that the insulation between the lower end plate 41 of the lower insulating plate 42 and the lower current collecting plate 43 can be ensured, and the lower insulating plate 42 can also have better elasticity.

In the embodiment, since the stack 1 is pressed against the lower end plate module 4 and the stack 1 is easily tensioned unevenly when fixed, the deformation of the end plate due to the uneven tensioning of the stack 1 can be adjusted by providing the lower insulating plate 42 as a plate spring insulating plate. Compare with through set up the spring between insulation board and end plate, set up lower insulation board 42 into the leaf spring insulation board, not only can reduce the height of lower end plate module 4, can also reduce the cost of lower end plate module 4 and improve the packaging efficiency.

Specifically, the plate spring insulating plate may be one of a glass fiber and polyurethane composite plate, a glass fiber and epoxy composite plate, a glass fiber and vinyl composite plate, or a carbon fiber and polyurethane composite plate.

That is, the lower insulating plate 42 may be made of a glass fiber and polyurethane composite material or a glass fiber and epoxy resin composite material or a glass fiber and vinyl resin composite material or a carbon fiber and polyurethane composite material. Not only can the lower insulating plate 42 be ensured to have better elasticity, but also the lower insulating plate 42 can be ensured to have better structural strength.

Specifically, the upper end plate 31 is injection molded integrally with the upper insulating plate 33, and/or the lower end plate 41 is injection molded integrally with the lower insulating plate 42.

That is to say, both can pass through injection moulding technology integrated into one piece between end plate and the insulating board, also can regard the insulating board as solitary machine tooling spare part, imbed in the end plate, and the design degree of freedom is high, can satisfy different development stage spare part demands.

Specifically, as shown in fig. 2, the upper end plate 31 is provided with at least one fixing groove 32, and the upper insulating plate 33 is provided with fixing protrusions 34 adapted to be correspondingly fitted with the fixing grooves 32 one by one, so as to ensure reliable connection between the upper end plate 31 and the upper insulating plate 33, and ensure high reliability of insulation between the insulating plate and the current collecting plate.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.