CN117059859A - Pile array - Google Patents

Abstract

The present disclosure provides a cell stack array, including a plurality of cell stack groups, the plurality of cell stack groups are disposed on a reference plane, each cell stack group includes a plurality of cell stacks connected in series, the plurality of cell stacks are arranged in a line; and the pipeline component is connected with the cell stack; wherein each stack includes opposite positive and negative ends, the positive or negative end of each stack being connected in series with the negative or positive end of its adjacent stack in each stack group, and the stacks being connected in parallel. The electric pile array comprises a plurality of electric pile groups which are connected in parallel, each electric pile group comprises a plurality of electric pile groups which are connected in series, and the pipeline assemblies are connected with the electric pile groups, so that fuel gas can enter each electric pile through the pipeline assemblies in sequence, the utilization rate of fuel is improved, and a structural scheme is provided for realizing the high-power electric pile array.

Description

Pile array

Technical Field

The present disclosure relates to the field of fuel cell technologies, and in particular, to a stack array.

Background

The solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) is a novel energy conversion device, has the characteristics of high power generation efficiency, wide fuel adaptability, cleanness and environmental protection, can directly convert chemical energy of fuel such as methane, hydrogen and the like into electric energy or heat energy, and does not generate any harmful substances.

The structure of SOFC stack is mainly divided into flat plate type, round tube type and flat tube type. The space utilization rate of the flat plate SOFC is high, the preparation is relatively simple, but the starting and stopping are longer; the tubular SOFC has strong thermal shock resistance, short start-up and shutdown, but low space utilization rate and volume power density; the flat tube SOFC has the structural advantages of both a flat plate and a circular tube, is one of the important development directions of SOFC technology, and the thick support anode greatly improves the mechanical strength of the cell, has strong thermal shock resistance and improves the long-term running stability of the cell. However, in general, the voltage of the single cell is 0.6V to 1.2V, and in order to meet the requirements of the practical application voltage and the high-power pile array, the SOFC single cells are required to be connected in series to form a pile, and then the pile array is designed to be connected in a structure, however, the prior art does not relate to a structural scheme how to realize the high-power pile array.

Disclosure of Invention

The present disclosure provides a galvanic pile array to at least solve the above technical problems in the prior art.

A galvanic pile array according to the present disclosure, comprising: the electric pile groups are arranged on the reference surface, each electric pile group comprises a plurality of electric pile which are connected in series, and the electric pile groups are arranged in a straight line; and a conduit assembly connected to the cell stack; wherein each of the stacks includes two opposite positive and negative ends, and in each of the stack groups, the positive or negative end of each stack is connected in series with the negative or positive end of its adjacent stack, and a plurality of stacks are connected in parallel.

In an embodiment, when the negative electrode end is close to the reference surface, the cell stacks are defined to be placed in a forward direction, and when the positive electrode end is close to the reference surface, the cell stacks are defined to be placed in an inverted direction, and in the cell stack group, the placement directions of every two adjacent cell stacks are opposite.

In an embodiment, the placement direction of the plurality of stacks in each stack group is the same as the placement direction of the plurality of stacks in the stack group adjacent thereto.

In one embodiment, the number of the cell stack groups is two, and the number of the cell stacks in each cell stack group is four.

In one embodiment, one of the two electric pile groups is defined as a first electric pile group, the other is defined as a second electric pile group, and the electric pile in each electric pile group is sequentially a first piece, a second piece, a third piece and a fourth piece; the first piece is placed forward, the second piece is placed backward, the third piece is placed forward, the fourth piece is placed backward, the positive ends of the two first pieces in the first pile group and the second pile group are connected in parallel, and the negative ends of the two fourth pieces in the first pile group and the second pile group are connected in parallel.

In one embodiment, the device further comprises a current connection plate, and a plurality of the battery stacks are connected in series or in parallel through the current connection plate.

In one embodiment, the pipeline assembly comprises a first air inlet manifold, a first air outlet manifold, a second air inlet manifold and a second air outlet manifold, and the first air inlet manifold, the first air outlet manifold, the second air inlet manifold and the second air outlet manifold are communicated with a plurality of electric pile assemblies.

In an embodiment, the cell stack includes a first air inlet portion, a first air outlet portion, a second air inlet portion, and a second air outlet portion, and the pipe assembly further includes a first air inlet pipe, a first air outlet pipe, a second air inlet pipe, and a second air outlet pipe that are in communication with each of the cell stacks; the first air inlet part is communicated with the first air inlet main pipe through the first air inlet pipeline, the first air outlet part is communicated with the first air outlet main pipe through the first air outlet pipeline, the second air inlet part is communicated with the second air inlet main pipe through the second air inlet pipeline, and the second air outlet part is communicated with the second air outlet main pipe through the second air outlet pipeline.

In one embodiment, the cell stack includes a stack body including a plurality of connection members and a plurality of unit cells, the plurality of connection members being stacked in series with the plurality of unit cells; the connecting piece comprises a first surface and a second surface which are opposite, the single cell comprises a cathode surface and an anode surface, the first surface of the connecting piece is connected with the cathode surface of the adjacent single cell, the second surface of the connecting piece is connected with the anode surface of the adjacent single cell, and the edges of the cathode surface and the anode surface are respectively connected with the connecting piece through sealing layers.

In an embodiment, the cell stack further includes a conductive plate, and the cathode portion and the anode portion of the cell stack body are respectively connected to the conductive plate; the two conducting plates are overlapped with the pile body, and the side ends of the conducting plates are provided with connecting holes for connecting conducting columns.

In the present disclosure, since the cell stack array includes a plurality of cell stack groups, the plurality of cell stack groups are connected in parallel, and each cell stack group includes a plurality of cell stacks connected in series, and the pipe assembly is connected with the cell stacks, therefore, the fuel gas can sequentially enter each cell stack through the pipe assembly, improving the utilization rate of the fuel, and providing a structural scheme for realizing the high-power cell stack array.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings, in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

FIG. 1 is a schematic diagram showing the overall structure of a cell stack array according to an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a second overall schematic diagram of a cell stack array according to an exemplary embodiment of the present disclosure;

FIG. 3 illustrates an overall structural schematic of a cell stack of an exemplary embodiment of the present disclosure;

fig. 4 shows a cross-sectional view of the overall structure of a cell stack of an exemplary embodiment of the present disclosure.

The reference numerals in the figures illustrate: 1. a galvanic pile group; 2. a pipeline assembly; 3. a current connection board; 4. a reference surface; 10. a cell stack; 11. a first galvanic pile group; 12. a second galvanic pile group; 21. a first intake manifold; 22. a first outlet header; 23. a second intake manifold; 24. a second outlet header; 101. a first member; 102. a second piece; 103. a third piece; 104. a fourth piece; 211. a first air intake line; 221. a first outlet line; 231. a second air intake line; 241. a second outlet gas line; 1001. a connecting piece; 1002. a single cell; 1003. a conductive plate; 1004. a conductive post; 1005. a pressurizing plate; 1006. an insulating plate.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly described in conjunction with the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person skilled in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a stack array according to an exemplary embodiment of the present disclosure includes a plurality of stack assemblies 1 and a pipe assembly 2, the plurality of stack assemblies 1 are disposed on a reference plane 4, each stack assembly 1 includes a plurality of stacks 10 connected in series, the plurality of stacks 10 are arranged in a straight line, and the pipe assembly 2 is connected to the stacks 10. Wherein each stack 10 includes opposite positive and negative polarity terminals, the positive or negative polarity terminal of each stack 10 is connected in series with the negative or positive polarity terminal of its adjacent stack 10 in each stack 1, and a plurality of stacks 1 are connected in parallel.

In the present embodiment, the reference surface 4 is typically a bottom plate, and the bottom plate is provided with a stack fixing hole, a current column hole, a gas tube hole, and the like, and the stack 10 is fixed to the bottom plate through the stack fixing hole. Specifically, when the stacks 10 in each stack 1 are connected in series, the positive end of the first stack 10 is connected in series with the negative end of its adjacent stack 10 (i.e., the second stack 10), the positive end of the second stack 10 is connected in series with the negative end of its adjacent stack 10 (i.e., the third stack 10), the positive end of the third stack 10 is connected in series with the negative end of its adjacent stack 10 (i.e., the fourth stack 10), and so on in the stack 1. Taking the example that the number of the electric pile groups 1 is two and the number of the electric pile 10 in each electric pile group 1 is four, if the negative electrode end of the first electric pile 10 in one electric pile group 1 is upwards placed, the negative electrode end of the first electric pile 10 in the other electric pile group 1 is upwards placed; likewise, if the positive electrode terminal of the second cell stack 10 in one of the cell stack groups 1 is placed upward, the positive electrode terminal of the second cell stack 10 in the other cell stack group 1 is also placed upward, and so on. When two cell stack groups 1 are connected in parallel, the negative electrode terminal of the first cell stack 10 in one cell stack group 1 is connected in parallel with the negative electrode terminal of the first cell stack 10 in the other cell stack group 1, and the positive electrode terminal of the fourth cell stack 10 in one cell stack group 1 is connected in parallel with the positive electrode terminal of the fourth cell stack 10 in the other cell stack group 1. Therefore, since the cell stack array includes a plurality of cell stack groups 1, the plurality of cell stack groups 1 are connected in parallel, and each cell stack group 1 includes a plurality of cell stacks 10 connected in series, the pipe assembly 2 is connected with the cell stacks 10, thereby fuel gas can sequentially enter each cell stack 10 through the pipe assembly 2, improving the utilization rate of fuel, and providing a structural scheme for realizing a high-power cell stack array.

In one embodiment, when the negative electrode end is close to the reference surface 4, the stacks 10 are positioned in the forward direction, and when the positive electrode end is close to the reference surface 4, the stacks 10 are positioned in the reverse direction, and in the stack assembly 1, the positioning directions of every two adjacent stacks 10 are opposite.

In this embodiment, the positive electrode end faces upward when the negative electrode end is close to the reference surface 4, and the stack 10 is placed in the forward direction, and the negative electrode end faces upward when the positive electrode end is close to the reference surface 4, and the stack 10 is placed in the reverse direction. In each stack group 1, the placement directions of every adjacent two stacks 10 are opposite, i.e., if the first stack 10 is placed in the forward direction, the second stack 10 is placed in the reverse direction, the third stack 10 is placed in the forward direction, and so on.

Specifically, in one embodiment, the placement direction of the plurality of stacks 10 in each stack group 1 is the same as the placement direction of the plurality of stacks 10 in the stack group 1 adjacent thereto.

In the present embodiment, if the negative electrode terminal of the first cell stack 10 in one of the cell stack groups 1 is placed upward, the negative electrode terminals of the first cell stacks 10 in the remaining cell stack groups 1 are also placed upward; likewise, if the positive electrode terminal of the second cell stack 10 in one of the cell stack groups 1 is placed upward, the positive electrode terminals of the second cell stacks 10 in the remaining cell stack groups 1 are also placed upward, and so on.

In one embodiment, the number of the cell stack groups 1 is two, and the number of the cell stacks 10 in each cell stack group 1 is four.

In the present embodiment, if the negative electrode terminal of the first cell stack 10 in one of the cell stack groups 1 is placed upward, the negative electrode terminal of the first cell stack 10 in the other cell stack group 1 is also placed upward; the positive end of the second cell stack 10 in one cell stack group 1 is placed upward, the positive end of the second cell stack 10 in the other cell stack group 1 is also placed upward, and so on, the negative end of the third cell stack 10 in one cell stack group 1 is placed upward, and the negative end of the third cell stack 10 in the other cell stack group 1 is also placed upward; the positive electrode terminal of the fourth cell stack 10 in one of the cell stack groups 1 is placed upward, and the positive electrode terminal of the fourth cell stack 10 in the other cell stack group 1 is also placed upward. When two cell stack groups 1 are connected in parallel, the negative electrode terminal of the first cell stack 10 in one cell stack group 1 is connected in parallel with the negative electrode terminal of the first cell stack 10 in the other cell stack group 1, and the positive electrode terminal of the fourth cell stack 10 in one cell stack group 1 is connected in parallel with the positive electrode terminal of the fourth cell stack 10 in the other cell stack group 1. It is to be understood that the number of the electric pile groups 1 is not limited to two, the number of the electric pile 10 in each electric pile group 1 is not limited to four, and the electric pile groups 1 can also have a structure that three electric pile 10 are connected in series and three electric pile groups 1 are connected in parallel; or, each pile group 1 has a structure that five piles 10 are connected in series, two pile groups 1 are connected in parallel, and the like, and the pile array is adaptively designed according to the required power in actual production.

Referring to fig. 1 and 2, in an embodiment, one of the two cell stack groups 1 is defined as a first cell stack group 11 and the other is defined as a second cell stack group 12, and the cell stacks 10 in each cell stack group 1 are sequentially a first member 101, a second member 102, a third member 103, and a fourth member 104. Wherein, the first piece 101 is placed forward, the second piece 102 is placed backward, the third piece 103 is placed forward, the fourth piece 104 is placed backward, the positive ends of the two first pieces 101 in the first pile group 11 and the second pile group 12 are connected in parallel, and the negative ends of the two fourth pieces 104 in the first pile group 11 and the second pile group 12 are connected in parallel.

In this embodiment, the placement direction of the cell stacks 10 in each cell stack group 1 is that the positive electrode ends of the first members 101 are placed upward, the negative electrode ends of the second members 102 are placed upward, the positive electrode ends of the third members 103 are placed upward, and the negative electrode ends of the fourth members 104 are placed upward, the positive electrode ends of the two first members 101 in the first cell stack group 11 and the second cell stack group 12 are connected in parallel, the negative electrode ends of the two fourth members 104 are connected in parallel, the negative electrode ends of the first members 101 in each cell stack group 1 are connected in series with the positive electrode ends of the second members 102, the negative electrode ends of the second members 102 are connected in series with the positive electrode ends of the third members 103, and the negative electrode ends of the third members 103 are connected in series with the positive electrode ends of the fourth members 104. Thus, fuel gas can enter each cell stack 10 in turn through the pipe assembly 2, improving fuel utilization and providing a structural solution for implementing a high power cell stack array.

In an embodiment, the stack array further includes a current connection plate 3, and the plurality of stacks 10 are connected in series or parallel through the current connection plate 3.

In one embodiment, the pipeline assembly 2 includes a first inlet manifold 21, a first outlet manifold 22, a second inlet manifold 23, and a second outlet manifold 24, where the first inlet manifold 21, the first outlet manifold 22, the second inlet manifold 23, and the second outlet manifold 24 are in communication with the plurality of stacks 1.

In the present embodiment, the first air inlet manifold 21 is typically an air inlet manifold, the first air outlet manifold 22 is an air outlet manifold, the second air inlet manifold 23 is a hydrogen air inlet manifold, the second air outlet manifold 24 is a hydrogen air outlet manifold, and each of the stacks 10 is in communication with the first air inlet manifold 21, the first air outlet manifold 22, the second air inlet manifold 23, and the second air outlet manifold 24.

Specifically, in one embodiment, the stack 10 includes a first air inlet portion, a first air outlet portion, a second air inlet portion, and a second air outlet portion, and the duct assembly 2 further includes a first air inlet duct 211, a first air outlet duct 221, a second air inlet duct 231, and a second air outlet duct 241 that are in communication with each stack 10. Wherein, the first air inlet portion is communicated with the first air inlet main pipe 21 through a first air inlet pipeline 211, the first air outlet portion is communicated with the first air outlet main pipe 22 through a first air outlet pipeline 221, the second air inlet portion is communicated with the second air inlet main pipe 23 through a second air inlet pipeline 231, and the second air outlet portion is communicated with the second air outlet main pipe 24 through a second air outlet pipeline 241.

In this embodiment, the first air inlet pipe 211 is an air inlet pipe, the first air outlet pipe 221 is an air outlet pipe, the second air inlet pipe 231 is a hydrogen air inlet pipe, the second air outlet pipe 241 is a hydrogen air outlet pipe, each first air inlet portion is communicated with the first air inlet manifold 21 through the first air inlet pipe 211, each first air outlet portion is communicated with the first air outlet manifold 22 through the first air outlet pipe 221, each second air inlet portion is communicated with the second air inlet manifold 23 through the second air inlet pipe 231, and each second air outlet portion is communicated with the second air outlet manifold 24 through the second air outlet pipe 241. Since all components in the cell stack 10 are standard components, a guarantee is provided for the connection of each pipeline assembly 2 during the assembly of the cell stack array, each pipeline in the pipeline assemblies 2 can be connected through welding or through a joint metal hose, the pipeline assemblies 2 are insulated from the cell stack 10, no current passes through the pipeline assemblies 2, and the series connection and the parallel connection of the current are not affected.

Referring to fig. 3 and 4, in an embodiment, the stack 10 includes a stack body including a plurality of connectors 1001 and a plurality of unit cells 1002, and the plurality of connectors 1001 are stacked and connected in series with the plurality of unit cell stacks 10. The connection member 1001 includes opposite first and second surfaces, the unit cell 1002 includes a cathode surface and an anode surface, the first surface of the connection member 1001 is connected to the cathode surface of the adjacent unit cell 1002, the second surface of the connection member 1001 is connected to the anode surface of the adjacent unit cell 1002, and edges of the cathode surface and the anode surface are connected to the connection member 1001 through sealing layers, respectively.

In this embodiment, the single cell 1002 is a single cathode flat tube SOFC, firstly, preparing yttria-stabilized zirconia (Yttria Stabilized Zirconia, YSZ) as an anode support by extrusion molding, and uniformly distributing fuel runner holes with diameter of 1mm in the middle; preparing a layer of active anode 8YSZ with the thickness of about 5 mu m on the outer side of the anode support body by a screen printing method; preparing a layer of electrolyte NiO-8YSZ outside the active anode, reserving a zone of electrolyte-free area in the middle of one surface of the battery, and taking the zone of electrolyte-free area as an electron current collecting window; continuously silk-screen printing a barrier layer GDC on the outer layer of the electrolyte; the cathode layer is silk-screened on the other side of the battery, and can be LSC, LSCF, LSM material and the like. The material of the connector 1001 is metal with good conductivity and strong oxidation resistance such as Crofer22, SUS430, SUS441, etc., and the material of the pressing plate 1005 is metal with good conductivity and strong oxidation resistance such as Crofer22, SUS430, SUS441, etc.

In an embodiment, the cell stack 10 further includes a conductive plate 1003, the cathode portion and the anode portion of the stack body are connected to the conductive plate 1003, the two conductive plates 1003 are stacked with the stack body, and the side ends of the conductive plates 1003 are provided with connection holes for connecting the conductive posts 1004.

In the present embodiment, the cell stack 10 further includes a pressing plate 1005, an insulating plate 1006, a pressing rod assembly, and the like, and in the actual production process, the pressing plate 1005, the insulating plate 1006, the conductive plate 1003, the unit cells 1002, the connection members 1001, and the like are sequentially stacked in the shape of the cell stack 10, and then the pressing rod assembly is passed through the lower pressing plate 1005, the upper pressing plate 1005 is passed through the upper end of the pressing rod assembly, nuts are screwed on, and then the pressing rod assembly is fastened to a desired pressure using a torque wrench. The cell stack 10 further has an air distribution chamber assembly and a hydrogen distribution chamber assembly, the air distribution chamber assembly is communicated with the first air inlet portion and the first air outlet portion, the hydrogen distribution chamber assembly is communicated with the second air inlet portion and the second air outlet portion, after pressurization is completed, the corresponding parts of the air distribution chamber assembly and the hydrogen distribution chamber assembly are coated with sealant, and then the sealant is fixed on the upper conductive plate 1003 and the lower conductive plate 1003 of the cell stack 10 by using screw assemblies, the cell stack 10 is basically molded, and finally conductive columns 1004 at the upper end and the lower end of the cell stack 10 are installed.

In the description of the present disclosure, it should be understood that the azimuth or positional relationship indicated by the azimuth word is generally based on the azimuth or positional relationship shown in the drawings, and is merely for convenience of describing the present disclosure and simplifying the description, and these azimuth words do not indicate or imply that the device or element to be referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one or more components or features' spatial positional relationships to other components or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass not only the orientation of the elements in the figures but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the disclosure described herein may be implemented in sequences other than those illustrated or described herein.

The present disclosure has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the present disclosure to the scope of the described embodiments. Further, it will be understood by those skilled in the art that the present disclosure is not limited to the above-described embodiments, and that many variations and modifications are possible in light of the teachings of the disclosure, which variations and modifications are within the scope of the disclosure as claimed. The scope of the disclosure is defined by the appended claims and equivalents thereof.

Claims (10)

1. A galvanic pile array, comprising:

the device comprises a plurality of electric pile groups (1), wherein the electric pile groups (1) are arranged on a reference surface (4), each electric pile group (1) comprises a plurality of electric pile (10) which are connected in series, and the electric pile (10) is arranged in a straight line; and

a pipe assembly (2), the pipe assembly (2) being connected to the cell stack (10);

wherein each of the stacks (10) comprises two opposite positive and negative polarity terminals, and in each of the stack groups (1), the positive or negative polarity terminal of each of the stacks (10) is connected in series with the negative or positive polarity terminal of its adjacent stack (10), and a plurality of the stacks (1) are connected in parallel.

2. The cell stack array according to claim 1, wherein the cell stacks (10) are placed in a forward direction when the negative electrode end is defined to be close to the reference surface (4), and the cell stacks (10) are placed in a reverse direction when the positive electrode end is defined to be close to the reference surface (4), and the placement directions of every two adjacent cell stacks (10) in the cell stack assembly (1) are opposite.

3. The cell stack array according to claim 2, wherein the placement direction of the plurality of cell stacks (10) in each cell stack group (1) is the same as the placement direction of the plurality of cell stacks (10) in the cell stack group (1) adjacent thereto.

4. A cell stack array according to claim 3, characterized in that the number of cell stacks (1) is two and the number of cell stacks (10) in each cell stack (1) is four.

5. The cell stack array according to claim 4, characterized in that one of two cell stack groups (1) is defined as a first cell stack group (11) and the other is defined as a second cell stack group (12), the cell stacks (10) in each cell stack group (1) being in turn a first piece (101), a second piece (102), a third piece (103) and a fourth piece (104); the first piece (101) is placed forward, the second piece (102) is placed backward, the third piece (103) is placed forward, the fourth piece (104) is placed backward, the positive ends of the first piece (101) in the first pile group (11) and the second pile group (12) are connected in parallel, and the negative ends of the fourth piece (104) in the first pile group (11) and the second pile group (12) are connected in parallel.

6. The cell stack array according to claim 1, further comprising a current connection plate (3), wherein a plurality of the cell stacks (10) are connected in series or in parallel through the current connection plate (3).

7. The electric stack array according to claim 1, characterized in that the pipe assembly (2) comprises a first inlet manifold (21), a first outlet manifold (22), a second inlet manifold (23) and a second outlet manifold (24), the first inlet manifold (21), the first outlet manifold (22), the second inlet manifold (23) and the second outlet manifold (24) being in communication with a plurality of the electric stack assemblies (1).

8. The cell stack array of claim 7, wherein the cell stack (10) includes a first air inlet, a first air outlet, a second air inlet, and a second air outlet thereon, and the duct assembly (2) further includes a first air inlet duct (211), a first air outlet duct (221), a second air inlet duct (231), and a second air outlet duct (241) in communication with each of the cell stacks (10); wherein, first inlet portion is through first inlet tube way (211) with first air inlet manifold (21) is linked together, first outlet portion is through first outlet tube way (221) with first air outlet manifold (22) is linked together, second inlet portion is through second inlet tube way (231) with second air inlet manifold (23) is linked together, second outlet portion is through second outlet tube way (241) with second air outlet manifold (24) is linked together.

9. The cell stack array according to claim 1, wherein the cell stack (10) comprises a cell stack body comprising a plurality of connection members (1001) and a plurality of unit cells (1002), the plurality of connection members (1001) being stacked in parallel with the plurality of cell stacks (10); the connector (1001) comprises a first surface and a second surface which are opposite, the single cell (1002) comprises a cathode surface and an anode surface, the first surface of the connector (1001) is connected with the cathode surface of the adjacent single cell (1002), the second surface of the connector (1001) is connected with the anode surface of the adjacent single cell (1002), and the edges of the cathode surface and the anode surface are respectively connected with the connector (1001) through sealing layers.

10. The cell stack array according to claim 1, wherein the cell stack (10) further comprises a conductive plate (1003), and the cathode portion and the anode portion of the cell stack body are respectively connected to the conductive plate (1003); the two conductive plates (1003) are overlapped with the pile body, and the side ends of the conductive plates are provided with connecting holes for connecting conductive columns (1004).