CN116404223A - Pile end plate and fuel cell pile - Google Patents

Pile end plate and fuel cell pile Download PDF

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Publication number
CN116404223A
CN116404223A CN202211610498.4A CN202211610498A CN116404223A CN 116404223 A CN116404223 A CN 116404223A CN 202211610498 A CN202211610498 A CN 202211610498A CN 116404223 A CN116404223 A CN 116404223A
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CN
China
Prior art keywords
manifold
pile
end plate
pipe diameter
inlet manifold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CN202211610498.4A
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Chinese (zh)
Inventor
吴海龙
王燊
冯帝文
姜远坤
周思宇
钮赛
宋永平
蒋永伟
周道武
王涛
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Aerospace Hydrogen Energy Shanghai Technology Co ltd
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Aerospace Hydrogen Energy Shanghai Technology Co ltd
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Application filed by Aerospace Hydrogen Energy Shanghai Technology Co ltd filed Critical Aerospace Hydrogen Energy Shanghai Technology Co ltd
Priority to CN202211610498.4A priority Critical patent/CN116404223A/en
Publication of CN116404223A publication Critical patent/CN116404223A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a pile end plate and a fuel cell pile, wherein the pile end plate comprises: a housing body and a nesting body; the shell body is provided with a first manifold accommodating groove and a second manifold accommodating groove; the first manifold accommodating groove and the second manifold accommodating groove penetrate the housing body from the thickness direction; the nested body includes: an insulating plate, a first manifold assembly and a second manifold assembly; the first manifold assembly and the second manifold assembly are respectively nested in the first manifold accommodating groove and the second manifold accommodating groove correspondingly and are connected with the insulating plate; the insulating plate is positioned on the back of the shell body. The invention can solve the problem of low voltage of the single battery at the end part of the fuel cell stack.

Description

Pile end plate and fuel cell pile
Technical Field
The invention relates to the technical field of fuel cells, in particular to a cell stack end plate and a fuel cell stack.
Background
The fuel cell is an energy conversion device for generating electric energy through electrochemical reaction of hydrogen and oxygen, and the reaction product is only water, so that the requirements of no pollution and zero emission in the true sense are met.
The fuel cell stack is formed by connecting a plurality of single cells in series, and the overall performance of the fuel cell stack can be influenced by the fact that the voltage of one single cell is too low. The performance of the single battery has great influence on the overall stack stability and the uniformity of the single battery of the fuel battery stack, and in the operation process of the fuel battery stack, the performance of the single battery with the lowest performance can be continuously reduced, even the reverse pole endurance loss is obvious, so that the overall service life of the fuel battery stack is also determined by the single battery with the lowest performance, and the performance of the fuel battery stack is generally limited by the single battery with the worst performance in the overall stack.
The existing structure design of the electric pile end plate generally considers factors such as mechanical strength, water resistance, dust resistance, insulation and the like, wherein the mechanical strength design mainly considers that the electric pile can generate larger deformation under the influence of packaging force to cause uneven press-fitting force, so that the voltage distribution of the fuel cell electric pile is uneven, the water blockage and the like are easy to generate, and the pressure is considered to be basically constant along the surface transmission of the fuel cell electric pile in the design process. However, the design fails to fully consider the influence of the manifold of the stack end plate on the uniformity of gas distribution in the stack core and the influence of the air inflow of the single cells positioned at the end of the stack (short for end single cells), and the unreasonable design can lead to the air inflow of the end single cells to be smaller than that of the single cells positioned in the middle of the stack, thus leading to lower voltage of the end single cells, thus affecting the consistency of the overall stack voltage of the fuel cell stack and possibly leading to the risk of burning in serious cases.
Disclosure of Invention
The invention aims to provide a pile end plate and a fuel cell pile, which can solve the problem that the voltage of an end single cell of the fuel cell pile is lower.
In order to achieve the above object, the present invention is realized by the following technical scheme:
a stack end plate comprising: a housing body 1 and a nesting body 2; the housing body 1 comprises a front surface and a back surface opposite to the front surface, and a first manifold accommodating groove 20 and a second manifold accommodating groove 21 are formed in the housing body 1; the first manifold accommodating groove 20 and the second manifold accommodating groove 21 penetrate the housing body 1 from the thickness direction; the nesting body 2 includes: an insulating plate 22, a first manifold assembly 2a and a second manifold assembly 2b; the first manifold assembly 2a and the second manifold assembly 2b are respectively nested into the first manifold receiving groove 20 and the second manifold receiving groove 21, and are connected with the insulating plate 22; the insulating plate 22 is located at the back of the case body 1.
Optionally, the method further comprises: and a reinforcing rib 3 provided on the front surface of the housing body 1.
Optionally, a plurality of mounting holes 4 are disposed on the edge of the housing body 1, and a plurality of mounting holes 4 are disposed circumferentially and at intervals along the housing body 1.
Optionally, the back of the housing body 1 is provided with a receiving groove, which is matched with the insulating plate 22, and after the insulating plate 22 is disposed in the receiving groove, the back of the housing body 1 is a flat surface.
Optionally, the first manifold assembly 2a comprises: a hydrogen inlet manifold 7, a coolant inlet manifold 6 and an air outlet manifold 5; the pipe diameter D7 of the hydrogen inlet manifold 7 gradually expands from the front surface to the back surface; the pipe diameter D6 of the cooling liquid inlet manifold 6 gradually expands from the front surface to the back surface; the pipe diameter D5 of the air outlet manifold 5 gradually decreases from the front to the back.
Optionally, the second manifold assembly 2b comprises: a hydrogen outlet manifold 8, a coolant outlet manifold 9, and an air inlet manifold 10; the pipe diameter D10 of the air inlet manifold 10 gradually expands from the front surface to the back surface; the pipe diameter D9 of the cooling liquid outlet manifold 9 gradually decreases from the front surface to the back surface; the pipe diameter D8 of the hydrogen outlet manifold 8 gradually decreases from the front side to the back side.
Optionally, the maximum value of the pipe diameter D7 of the hydrogen inlet manifold 7 is smaller than the minimum value of the pipe diameter D6 of the coolant inlet manifold 6, and the maximum value of the pipe diameter D6 of the coolant inlet manifold 6 is smaller than the minimum value of the pipe diameter D5 of the air outlet manifold 5.
Optionally, hydrogen enters the stack core through the hydrogen inlet manifold 7 and is then discharged through the hydrogen outlet manifold 8; coolant enters the stack core through the coolant inlet manifold 6 and is then discharged through the coolant outlet manifold 9; air enters the stack core through the air inlet manifold 10 and is then exhausted through the air outlet manifold 5.
Optionally, the hydrogen inlet manifold 7, the coolant inlet manifold 6 and the air outlet manifold 5 are integrally provided; the hydrogen outlet manifold 8, the coolant outlet manifold 9 and the air inlet manifold 10 are integrally provided.
In another aspect, the present invention also provides a fuel cell stack, including: a stack end plate as described above, a stack housing 14, the stack core 12 being disposed inside the stack housing 14; the end part of the pile housing 14 is provided with a blind hole matched with the mounting hole 4 on the pile end plate, the blind hole is penetrated through the mounting hole 4 by a bolt 15 and stays in the blind hole so as to fix the pile end plate on the end part of the pile housing 14; a sealing ring 11 is arranged between the pile end plate and the pile shell 14.
The invention has at least one of the following advantages:
the invention provides a pile end plate, which is arranged close to an end single battery. Therefore, the pile end plate can integrate the insulating plate to provide good insulating performance and uniform pressure to a certain extent, and can improve the air inflow of the end unit cells, so that the performance of the end unit cells is improved, the overall voltage consistency of the pile is improved, and the nesting structure can effectively reduce the risk of air leakage between the end plate and the insulating plate.
The invention improves distribution uniformity of the fluid manifold by arranging the end plate manifold inlets and outlets with different diameters, does not introduce additional devices for distributing the fluid, and has simple structure and convenient implementation. Namely, the first manifold assembly 2a and the second manifold assembly 2b perform secondary distribution on the pile-entering fluid in the pile operation process, and the air inflow of the end part is obviously increased, so that the performance of the single cell at the manifold end is improved, and the pile voltage consistency is further improved.
The shell body is used for packaging the galvanic pile shell and balancing the packaging force, comprises an inlet and an outlet of hydrogen, air and cooling liquid, and can provide three media required by the reaction for a galvanic pile core (a plurality of single cells form the whole of the core, each single cell consists of a polar plate and an MEA (MEA), the shell is arranged outside the core, and a manifold end plate is connected with the core and the shell).
Drawings
FIG. 1 is a schematic front perspective view of a pile end plate according to an embodiment of the present invention;
FIG. 2 is a schematic view of a rear perspective view of a stack end plate according to an embodiment of the present invention;
FIG. 3 is a schematic top view of a stack end plate according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of the stack end plate shown in FIG. 3 in the direction A-A;
FIG. 5 is a schematic cross-sectional view of the stack end plate shown in FIG. 3 in the direction B-B;
FIG. 6 is a schematic front view of a nested body of a stack end plate according to an embodiment of the present invention;
FIG. 7 is a schematic view of a back side structure of a nested body of a stack end plate according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of a fuel cell stack according to an embodiment of the present invention.
Detailed Description
The present invention relates to a stack end plate and a fuel cell, and more particularly to a stack end plate and a fuel cell. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention. For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.
As shown in fig. 1 to 3, the present embodiment provides a stack end plate including: a housing body 1 and a nesting body 2; the housing body 1 comprises a front surface and a back surface opposite to the front surface, and a first manifold accommodating groove 20 and a second manifold accommodating groove 21 are formed in the housing body 1; the first manifold accommodating groove 20 and the second manifold accommodating groove 21 penetrate the housing body 1 from the thickness direction; the nesting body 2 includes: an insulating plate 22, a first manifold assembly 2a and a second manifold assembly 2b; the first manifold assembly 2a and the second manifold assembly 2b are respectively nested into the first manifold receiving groove 20 and the second manifold receiving groove 21, and are connected with the insulating plate 22; the insulating plate 22 is located at the back of the case body 1.
The manifold end plate shell body 1 is connected with the injection molding main body 2 in a nested manner, is connected with the sealing ring 11 and the reactor core 12, is connected with the sealing ring 13 and the reactor shell 14 through bolts 15 to complete the reactor packaging, reduces the risk of air leakage between the end plate insulating plates (insulating plates and the design for the insulation of the reactor) caused by improper assembly compared with the traditional mode, and simultaneously, the nested main body also replaces the insulating plates to provide an insulating function for the reactor. (the end plate is formed by nesting an end plate shell and an injection molding main body, the detailed drawing is seen in DWG documents, the injection molding main body is provided with only one manifold, six manifolds, the end plate is connected with a reactor core and is pressed into a whole, and then the assembly holes are assembled on the galvanic pile packaging shell)
As shown in fig. 3, the present embodiment further includes: and a reinforcing rib 3 provided on the front surface of the housing body 1. The reinforcing ribs 3 are distributed on the front face of the shell body 1, and provide certain support for the pile end plates and increase the uniform distribution of pressure.
As shown in fig. 3, the present embodiment further includes: the shell body 1 is provided with a plurality of mounting holes 4, wherein the mounting holes 4 are arranged on the edge of the shell body 1, and the mounting holes 4 are arranged along the periphery of the shell body 1 at intervals. The mounting holes 4 are connected with the pile housing 14 to perform a sealing function. The processing of the shell can be facilitated or the operation requirement of the pile assembly process can be met.
In this embodiment, the back surface of the housing body 1 is provided with a receiving groove, which is matched with the insulating plate 22, and after the insulating plate 22 is disposed in the receiving groove, the back surface of the housing body 1 is a flat surface.
As shown in fig. 4 to 7, the first manifold assembly 2a includes: a hydrogen inlet manifold 7, a coolant inlet manifold 6 and an air outlet manifold 5; the pipe diameter D7 of the hydrogen inlet manifold 7 gradually expands from the front surface to the back surface; herein, front to back may refer to both the front and back of the housing body 1; the pipe diameter D6 of the cooling liquid inlet manifold 6 gradually expands from the front surface to the back surface; the pipe diameter D5 of the air outlet manifold 5 gradually decreases from the front to the back.
With continued reference to fig. 4-7, the second manifold assembly 2b includes: a hydrogen outlet manifold 8, a coolant outlet manifold 9, and an air inlet manifold 10; the pipe diameter D10 of the air inlet manifold 10 gradually expands from the front surface to the back surface; the pipe diameter D9 of the cooling liquid outlet manifold 9 gradually decreases from the front surface to the back surface; the pipe diameter D8 of the hydrogen outlet manifold 8 gradually decreases from the front side to the back side.
The maximum value of the pipe diameter D7 of the hydrogen inlet manifold 7 is smaller than the minimum value of the pipe diameter D6 of the cooling liquid inlet manifold 6, and the maximum value of the pipe diameter D6 of the cooling liquid inlet manifold 6 is smaller than the minimum value of the pipe diameter D5 of the air outlet manifold 5. That is, the pipe diameter of the hydrogen inlet manifold 7 is smaller than the pipe diameter of the cooling liquid inlet manifold 6, and the pipe diameter of the cooling liquid inlet manifold 6 is smaller than the pipe diameter of the air outlet manifold 5; d7< D6< D5. The pipe diameter D8 of the hydrogen outlet manifold 8 is smaller than the pipe diameter D9 of the cooling liquid outlet manifold 9, and the pipe diameter D9 of the cooling liquid outlet manifold 9 is smaller than the pipe diameter D10 of the air inlet manifold 10, wherein D8< D9< D10.
Hydrogen enters the reactor core through the hydrogen inlet manifold 7 and is then discharged through the hydrogen outlet manifold 8; coolant enters the stack core through the coolant inlet manifold 6 and is then discharged through the coolant outlet manifold 9; air enters the stack core through the air inlet manifold 10 and is then exhausted through the air outlet manifold 5. When hydrogen enters through the hydrogen inlet manifold 7, the flow speed of the hydrogen at the end cells is slowed down due to the reducing structure, so that the air inflow is increased, the performance of the end single cells is improved, the hydrogen is discharged through the hydrogen outlet manifold 8 after passing through the reactor core, the water blocking risk is reduced due to easier water discharge at the outlet of the reducing structure (water is available in hydrogen air, so that the water is optimally discharged in hydrogen air), the air inflow and the water discharge are optimized by the air path structure, and the inlet and outlet for supplying fluid to the reactor core can be utilized; the above-mentioned fluid includes, but is not limited to, air, hydrogen, and a cooling liquid.
Optionally, the hydrogen inlet manifold 7, the coolant inlet manifold 6 and the air outlet manifold 5 are integrally provided; the hydrogen outlet manifold 8, the coolant outlet manifold 9 and the air inlet manifold 10 are integrally provided. The combination mode injection molding process of the components is not limited to the process; the shell of the electric pile end plate is made of high-strength materials such as aluminum alloy, the nesting main body is made of other nonmetallic materials such as nylon plastic, but the electric pile end plate is not limited to the materials;
in another aspect, the present invention also provides a fuel cell stack, including: a stack end plate as described above, a stack housing 14, the stack core 12 being disposed inside the stack housing 14; the end part of the pile housing 14 is provided with a blind hole matched with the mounting hole 4 on the pile end plate, the blind hole is penetrated through the mounting hole 4 by a bolt 15 and stays in the blind hole so as to fix the pile end plate on the end part of the pile housing 14; a sealing ring 11 is arranged between the pile end plate and the pile shell 14.
The pile core 12 includes several cells connected in series, and other sealing ring 13 structures are also disposed between adjacent cells, so that the pile core 12 can use the existing pile core structure, and the invention is not repeated.
The shell body 1 is connected with the injection molding main body (nested main body) 2 in a nested manner, is connected with the sealing ring 11 and the reactor core 12, is then connected with the sealing ring 13 and the pile shell (pile packaging shell) 14 through bolts 15 to complete pile packaging, reduces the risk of air leakage between the end plate insulating plates caused by improper assembly compared with the traditional mode, and simultaneously, the nested main body also replaces the insulating plates to provide an insulating function for the pile. (the end plate is formed by nesting an end plate shell and an injection molding main body, only one injection molding main body is formed, six manifolds are formed, the end plate is connected with the reactor core and is pressed into a whole, and then the assembly holes are assembled on the electric pile packaging shell 14).
The pile end plate provided by the embodiment is arranged close to the end unit battery, is of a pile end plate design with a nested structure, and comprises a shell body, a nested main body 2 or a nested injection molding insulating part which are mutually nested. Therefore, the pile end plate can integrate the insulating plate to provide good insulating performance and uniform pressure to a certain extent, and can improve the air inflow of the end unit cells, so that the performance of the end unit cells is improved, the overall voltage consistency of the pile is improved, and the nesting structure can effectively reduce the risk of air leakage between the end plate and the insulating plate.
The distribution uniformity of the fluid manifold is improved by arranging the inlet and outlet of the end plate manifold with different diameters, no additional device for distributing the fluid is introduced, and the fluid manifold is simple in structure and convenient to implement. Namely, the first manifold assembly 2a and the second manifold assembly 2b perform secondary distribution on the pile-entering fluid in the pile operation process, and the air inflow of the end part is obviously increased, so that the performance of the single cell at the manifold end is improved, and the pile voltage consistency is further improved.
The housing body provided in this embodiment is used for packaging a galvanic pile housing and equalizing packaging force, and includes an inlet and an outlet for hydrogen, air and cooling liquid, and can provide three media required for a reaction for a galvanic pile core (a plurality of single cells form a whole core, each single cell is formed by a polar plate and an MEA, the housing is arranged outside the core, and a manifold end plate is connected with the core and the housing).
The embodiment can be used for packaging the galvanic pile shell, balancing the packaging force, integrating the insulating plate on the end plate (the nested main body has the insulating plate function and does not need to be additionally provided with an insulating plate), and the risk of air leakage caused by improper installation can be reduced by nesting the end plate shell and the inside; the design of the manifold inside the injection molding main body can carry out secondary distribution (variable flow passage) on fluid, the air inflow (Venturi effect) of the end unit cell is increased through the variable diameter structure, the performance of the end unit cell is improved (the performance of the end unit cell is lower than that of the middle unit cell, the voltage of the end unit cell can be improved by increasing the air inflow, the overall voltage consistency of the end unit cell can be improved after the voltage of the end unit cell is increased, and the overall voltage consistency of the fuel cell stack is improved by the short plate effect).
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims (10)

1. A stack end plate, comprising: a housing body (1) and a nesting body (2);
the shell body (1) comprises a front surface and a back surface opposite to the front surface, and a first manifold accommodating groove (20) and a second manifold accommodating groove (21) are formed in the shell body (1);
the first manifold accommodating groove (20) and the second manifold accommodating groove (21) penetrate the housing body (1) from the thickness direction;
the nesting body (2) comprises: an insulating plate (22), a first manifold assembly (2 a) and a second manifold assembly (2 b);
the first manifold assembly (2 a) and the second manifold assembly (2 b) are respectively correspondingly nested into the first manifold accommodating groove (20) and the second manifold accommodating groove (21) and are connected with the insulating plate (22);
the insulating plate (22) is positioned on the back surface of the shell body (1).
2. The stack end plate of claim 1, further comprising: and the reinforcing rib (3) is arranged on the front surface of the shell body (1).
3. Pile end plate according to claim 2, characterized in that a number of mounting holes (4) are provided on the edge of the housing body (1), the number of mounting holes (4) being arranged circumferentially and at intervals along the housing body (1).
4. A stack end plate according to claim 3, characterized in that the back side of the housing body (1) is provided with a receiving groove which is matched with the insulating plate (22), and the back side of the housing body (1) is a flat surface after the insulating plate (22) is arranged in the receiving groove.
5. The stack end plate according to claim 4, characterized in that said first manifold assembly (2 a) comprises: a hydrogen inlet manifold (7), a cooling liquid inlet manifold (6) and an air outlet manifold (5);
the pipe diameter D7 of the hydrogen inlet manifold (7) gradually expands from the front surface to the back surface;
the pipe diameter D6 of the cooling liquid inlet manifold (6) is gradually enlarged from the front surface to the back surface;
the pipe diameter D5 of the air outlet manifold (5) gradually decreases from the front surface to the back surface.
6. The stack end plate according to claim 5, characterized in that said second manifold assembly (2 b) comprises: a hydrogen outlet manifold (8), a coolant outlet manifold (9) and an air inlet manifold (10);
the pipe diameter D10 of the air inlet manifold (10) gradually expands from the front surface to the back surface; the pipe diameter D9 of the cooling liquid outlet manifold (9) is gradually reduced from the front surface to the back surface; the pipe diameter D8 of the hydrogen outlet manifold (8) gradually decreases from the front surface to the back surface.
7. The stack end plate of claim 6,
the maximum value of the pipe diameter D7 of the hydrogen inlet manifold (7) is smaller than the minimum value of the pipe diameter D6 of the cooling liquid inlet manifold (6), and the maximum value of the pipe diameter D6 of the cooling liquid inlet manifold (6) is smaller than the minimum value of the pipe diameter D5 of the air outlet manifold (5).
8. The stack end plate of claim 7,
hydrogen enters the pile core through the hydrogen inlet manifold (7) and is discharged through the hydrogen outlet manifold (8);
cooling fluid enters the pile core through the cooling fluid inlet manifold (6) and is then discharged through the cooling fluid outlet manifold (9);
air enters the stack core through the air inlet manifold (10) and is then exhausted through the air outlet manifold (5).
9. The stack end plate according to claim 8, characterized in that the hydrogen inlet manifold (7), the coolant inlet manifold (6) and the air outlet manifold (5) are integrally provided; the hydrogen outlet manifold (8), the cooling liquid outlet manifold (9) and the air inlet manifold (10) are integrally arranged.
10. A fuel cell stack, comprising: pile end plate according to any one of claims 1 to 9, pile housing (14),
the electric pile core (12) is arranged inside the electric pile shell (14);
the end part of the pile shell (14) is provided with a blind hole matched with the mounting hole (4) on the pile end plate,
penetrating the mounting hole (4) by a bolt (15) and staying in the blind hole so as to fix the pile end plate on the end part of the pile shell (14);
a sealing ring (11) is arranged between the pile end plate and the pile shell (14).
CN202211610498.4A 2022-12-14 2022-12-14 Pile end plate and fuel cell pile Pending CN116404223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211610498.4A CN116404223A (en) 2022-12-14 2022-12-14 Pile end plate and fuel cell pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211610498.4A CN116404223A (en) 2022-12-14 2022-12-14 Pile end plate and fuel cell pile

Publications (1)

Publication Number Publication Date
CN116404223A true CN116404223A (en) 2023-07-07

Family

ID=87014831

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211610498.4A Pending CN116404223A (en) 2022-12-14 2022-12-14 Pile end plate and fuel cell pile

Country Status (1)

Country Link
CN (1) CN116404223A (en)

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