CN116053504A - Multi-channel distribution manifold structure and fuel cell stack - Google Patents

Multi-channel distribution manifold structure and fuel cell stack Download PDF

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Publication number
CN116053504A
CN116053504A CN202211527562.2A CN202211527562A CN116053504A CN 116053504 A CN116053504 A CN 116053504A CN 202211527562 A CN202211527562 A CN 202211527562A CN 116053504 A CN116053504 A CN 116053504A
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China
Prior art keywords
distribution
hydrogen
cooling liquid
air
end plate
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CN202211527562.2A
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Chinese (zh)
Inventor
向蔚
郭伟
潘牧
詹志刚
戈琛
洪丰
张立昌
范卫东
梅坚
张恒
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Foshan Xianhu Laboratory
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Foshan Xianhu Laboratory
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Priority to CN202211527562.2A priority Critical patent/CN116053504A/en
Publication of CN116053504A publication Critical patent/CN116053504A/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
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
    • 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
    • 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 multichannel distribution manifold structure and a fuel cell stack, comprising an end plate, two air boxes, two hydrogen and cooling liquid boxes; the air box is provided with an air flow passage, the air flow passage comprises a converging section and a diverging section, the outer ports of the diverging sections are in butt joint with air holes on the end plate one by one, a distribution chamber is arranged between the inner ends of the converging section and the diverging sections, the distribution chamber is provided with a distribution stop block arranged between the inner ports of the diverging sections, the distribution stop block is in transmission connection with an adjusting driving piece, and the adjusting driving piece is used for adjusting the inclination angle of the distribution stop block so as to enable the diverging sections to realize distribution of different air flow; the hydrogen and cooling liquid box is provided with a hydrogen flow passage and a cooling liquid flow passage, the inner port of the hydrogen flow passage is in butt joint with the hydrogen hole on the end plate, and the inner port of the cooling liquid flow passage is in butt joint with the cooling liquid hole on the end plate. The space utilization rate is high, so that different air flow distribution can be realized by a plurality of diversion sections, the gas distribution of the electric pile is more uniform, and different working conditions of the electric pile are met.

Description

Multi-channel distribution manifold structure and fuel cell stack
Technical Field
The invention relates to the technical field of fuel cells, in particular to a multichannel distribution manifold structure and a fuel cell stack.
Background
Proton exchange membrane fuel cells are remarkable in many energy sources because of their low noise, high conversion efficiency, high power density, rapid start-up, and the like. The fuel cell stack is a core component of the fuel cell system, the manifold connects the fuel cell stack with accessories of the system for water vapor distribution of the fuel cell, and reasonable structural design of the manifold can ensure good water and gas distribution so as to ensure the best performance of the fuel cell stack.
The current water and gas distribution of the bipolar plate of the galvanic pile is a difficult problem of the design of the bipolar plate structure, especially the gas flow distribution of the cathode, water and gas inlets and outlets are distributed on the left side and the right side of the bipolar plate on the traditional bipolar plate, the areas on the bipolar plate are not fully utilized, the water and gas inlets and outlets are narrow, the space utilization rate of the bipolar plate is reduced, the flow passage resistance in the existing manifold structure is large, the pressure loss is large, and the distribution of cooling gas cannot be actively regulated according to the internal operation condition of the galvanic pile.
Disclosure of Invention
The present invention is directed to a multi-channel distribution manifold structure and fuel cell stack that address one or more of the problems of the prior art, and at least provide a beneficial choice or creation.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a multichannel distribution manifold structure, which comprises an end plate, two air boxes respectively positioned at the upper side and the lower side of the outer end surface of the end plate, and two hydrogen and cooling liquid boxes respectively positioned at the left side and the right side of the outer end surface of the end plate;
the air box is provided with an air flow passage, the air flow passage comprises a converging section and a diverging section which are communicated with each other, the diverging section is provided with a plurality of diverging sections, the outer ports of the diverging sections are in butt joint with air holes on the end plate one by one, a circular distribution chamber is arranged between the inner ends of the converging section and the diverging sections, the inner ports of the diverging sections are annular to the peripheral wall of the distribution chamber, the distribution chamber is provided with distribution check blocks arranged between the inner ports of the diverging sections, the distribution check blocks are in transmission connection with an adjusting driving piece, and the adjusting driving piece is used for adjusting the inclination angle of the distribution check blocks so as to enable the diverging sections to realize distribution of different air flows;
the hydrogen and cooling liquid box is provided with a hydrogen flow passage and a cooling liquid flow passage, the inner port of the hydrogen flow passage is in butt joint with a hydrogen hole on the end plate, and the inner port of the cooling liquid flow passage is in butt joint with a cooling liquid hole on the end plate.
The multichannel distribution manifold structure has the beneficial effects that: compared with the traditional fuel cell manifold, the end plate is fully utilized, two air boxes and two hydrogen and cooling liquid boxes are sequentially arranged on the periphery of the outer end surface of the end plate, the whole occupied space is small, the space utilization rate is high, one of the two air boxes assists in entering air, the other assists in discharging air, a distribution chamber is arranged in the air box, a distribution stop block is arranged in the distribution chamber, the inclination angle of the distribution stop block is adjusted by adjusting a driving piece, so that the distribution section between the distribution section and the confluence section is adjusted, different air flow distribution can be realized by the distribution section, the gas distribution of a galvanic pile is more uniform, the reaction is more complete, and different working conditions of the galvanic pile are met.
As a further improvement of the technical scheme, the outer port of the confluence section is arranged at the bottom of the air box and faces downwards, and the outer port of the confluence section is convexly provided with a connecting sleeve. The connecting sleeve is used for fixedly connecting the rubber tube, the outer port of the converging section is arranged downwards and is positioned at the bottom of the air box, so that water accumulation can be avoided.
As a further improvement of the technical scheme, the bus section extends up and down, the distribution stop block is disc-shaped, the distribution stop block is provided with a distribution end face protruding downwards in an arc shape, the circle center of the top surface of the distribution stop block is fixedly arranged relative to the air box, and a plurality of outer ports of the bus section are annularly arranged on the outer periphery side of the distribution end face.
The distribution dog in this scheme passes through the effect that the business turn over realization water conservancy diversion of distribution end to the air is circular arc protruding structure, can reduce the pressure loss of circulation of air like this, and adjust the driving piece and mainly adjust the distribution dog around self centre of a circle wobbling gradient, concretely adjusts the transmission structure between driving piece and the distribution dog, and the corresponding structure of selection is realized according to actual conditions to the skilled person, and wherein adjust the driving piece and can adopt a plurality of telescopic links, and a plurality of telescopic links are the annular interval and locate between distribution dog and the distribution chamber roof, and the both ends of telescopic link are spherical hinge structure, just so can realize the regulation of distribution dog gradient, can adopt other structures in other schemes.
As a further improvement of the technical scheme, the outer ports of the plurality of diversion sections are arranged at intervals left and right, and the diversion sections are flow passages with curved structures. The adoption of the diversion section with the curved surface flow passage structure can further reduce the pressure loss of air, and the outer ports of the diversion sections are arranged at left and right intervals, so that the space of the end plate can be further utilized.
As a further improvement of the technical scheme, the outer ports of the cooling liquid flow channel and the hydrogen flow channel are respectively provided with a connecting sleeve in a protruding mode. The cooling liquid flow channel and the hydrogen flow channel are connected with the rubber tube through the connecting sleeve, and the assembly is convenient.
As a further improvement of the technical scheme, the inside of the cooling liquid flow channel and the inside of the hydrogen flow channel are both of curved structures. The pressure loss of hydrogen and cooling liquid can be effectively reduced.
As a further improvement of the above technical solution, the hydrogen flow channels and the cooling liquid flow channels are arranged at intervals in the up-down direction, and the two hydrogen and cooling liquid boxes are arranged in a central symmetry manner with the center of the end plate. The space of the end plate is further utilized, and the two hydrogen and cooling liquid boxes are arranged on the left side and the right side of the end plate in a central symmetry mode, so that a hydrogen flow channel on one of the hydrogen and cooling liquid boxes is located at the bottom, and accumulated water is avoided.
As a further improvement of the technical scheme, sealing ring gaskets are arranged between the end plate and the air box, between the end plate and the end plate are provided with sealing ring gaskets.
The end plate in this scheme is detachable connection with air box, hydrogen and coolant liquid box to fix through a plurality of bolts, set up sealing ring pad and can improve the leakproofness between them, and still be provided with the seal groove at box body and end plate, the seal groove is used for installing sealing ring pad.
As a further improvement of the technical scheme, a platform surface is reserved on the side wall surface of the air box, the side wall surface of the hydrogen box and the side wall surface of the cooling liquid box, the platform surface is used for installing elements such as a temperature sensor, a pressure sensor and a conductivity sensor used for monitoring data, the whole occupied space is small, the space utilization rate is high, and the volume power density of the galvanic pile is further improved.
The air box at the upper part is an air inlet box, and the air box at the lower part is an air outlet box. When the air is discharged, water can be taken out together, and accumulated water is avoided.
In addition, the invention also provides a fuel cell stack, which comprises the multi-channel distribution manifold structure and a stack body formed by stacking a plurality of polar plates, wherein the inner end surface of the end plate is connected with the end part of the stack body.
The beneficial effects of the invention are as follows: compared with the traditional fuel cell manifold and the electric pile, the invention transfers the distribution of cathode gas from the bipolar plate to the manifold, increases the space utilization rate of the bipolar plate, and simultaneously provides a multi-channel distribution manifold structure capable of adjusting flow, so that the gas distribution of the electric pile is more uniform and the reaction is more complete.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is an exploded view of one embodiment of a multi-channel distribution manifold structure provided by the present invention;
FIG. 2 is a schematic diagram of a multi-channel distribution manifold according to an embodiment of the present invention;
FIG. 3 is a bottom view of an embodiment of an air box according to the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B in FIG. 3;
FIG. 6 is a schematic illustration of an air box according to an embodiment of the present invention;
fig. 7 is a side cross-sectional view of one embodiment of a coolant cartridge provided by the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, if there is a word description such as "a plurality" or the like, the meaning of a plurality is one or more, and the meaning of a plurality is two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1-7, the multi-channel distribution manifold structure of the present invention is illustrated in the following embodiments:
the multichannel distribution manifold structure of this embodiment includes an end plate 300, two air boxes 100, and two hydrogen and coolant boxes 200.
The end plate 300 is a rectangular plate structure, air inlet holes 310, air outlet holes 320, hydrogen inlet holes 330, hydrogen outlet holes 340, liquid inlet holes 350 and liquid outlet holes 360 penetrating through the inner side and the outer side are formed in the periphery of the end plate 300, the plurality of air inlet holes 310 are uniformly distributed on the upper edge of the end plate 300, the plurality of air outlet holes 320 are uniformly distributed on the lower edge of the end plate 300, the hydrogen inlet holes 330 and the liquid outlet holes 360 are uniformly distributed on the right edge of the end plate 300, and the hydrogen outlet holes 340 and the liquid inlet holes 350 are uniformly distributed on the left edge of the end plate 300.
The two air boxes 100 are divided into a first box body 150 and a second box body 160, the first box body 150 and the second box body 160 are respectively arranged on the upper side and the lower side of the outer end face of the end plate 300, the air boxes 100 are provided with air flow channels, the first box body 150 on the upper side is responsible for air intake, and the second box body 160 on the lower side is responsible for air exhaust, so that water can be taken out together when the air exhaust is performed, and accumulated water is avoided being formed.
The air flow path of the present embodiment includes a converging section 110 and a plurality of diverging sections 120, wherein the inner end of the converging section 110 is communicated with the inner ends of the diverging sections 120 through the distribution chamber 130, the outer ports of the diverging sections 120 on the first box 150 are in one-to-one correspondence with the air inlet holes 310, and the outer ports of the diverging sections 120 on the second box 160 are in one-to-one correspondence with the air outlet holes 320.
The outer port of the manifold section 110 on the first cassette 150 is an air inlet 151 and the outer port of the manifold section 110 on the second cassette 160 is an air outlet 161.
And the air inlet 151 and the air outlet 161 of the present embodiment are all disposed at the bottom of the air box 100, and the air inlet 151 and the air outlet 161 are all disposed downward, so that water accumulation can be avoided.
And the air inlet 151 and the air outlet 161 are provided with a connecting sleeve 400, and the connecting sleeve 400 is used for fixedly connecting the rubber tube.
And the confluence section 110 is vertically extended from top to bottom, the distribution chamber 130 is in an annular cavity structure, the inner ends of the multiple diversion sections 120 are annularly arranged on the peripheral wall of the distribution chamber 130 at intervals, the top of the distribution chamber 130 is provided with a distribution stop block 140, the distribution stop block 140 is arranged in the range of the inner ends of the multiple diversion sections 120, and the distribution stop block 140 is in transmission connection with an adjusting driving member, wherein the adjusting driving member is mainly used for adjusting and controlling the inclination angle of the distribution stop block 140, so that the multiple diversion sections 120 can realize different air flow distribution.
The distribution chamber 130 is arranged in the air box 100, the distribution stop block 140 is arranged in the distribution chamber 130, and the inclination angle of the distribution stop block 140 is adjusted by adjusting the driving piece, so that the flow cross sections between the plurality of flow dividing sections 120 and the converging section 110 are adjusted, different air flow distribution can be realized by the plurality of flow dividing sections 120, the gas distribution of the electric pile is more uniform, the reaction is more sufficient, and different working conditions of the electric pile are met.
Further, the distribution block 140 of the present embodiment adopts a disc-shaped structure, the bottom of the distribution block 140 is provided with a distribution end face 141, the distribution end face 141 is disposed protruding towards the lower circular arc, wherein the center of the top surface of the distribution block 140 is relatively fixed to the air box 100, and the outer ports of the plurality of bus segments 110 are disposed on the outer periphery side of the distribution end face 141.
The distribution block 140 of this embodiment achieves the effect of guiding air through the inlet and outlet of the distribution end face 141, and the distribution end face 141 is of a circular arc protruding structure, so that the pressure loss of air circulation can be reduced, the adjustment driving member mainly adjusts the inclination of the distribution block 140 swinging around the center of the circle thereof, and particularly adjusts the transmission structure between the driving member and the distribution block 140, and a person skilled in the art can select a corresponding structure according to practical situations to achieve the effect, wherein the adjustment driving member can adopt a plurality of telescopic rods, the telescopic rods are annularly arranged between the distribution block 140 and the top wall of the distribution chamber 130 at intervals, and the two ends of the telescopic rods are of spherical hinge structures, so that the inclination of the distribution block 140 can be adjusted, and other structures can be adopted in other schemes.
The outer ports of the plurality of flow dividing sections 120 are arranged at left and right intervals, the flow dividing sections 120 adopt a curved surface structure, the flow dividing sections 120 adopting a curved surface flow passage structure in this embodiment can further reduce the pressure loss of air, and the outer ports of the plurality of flow dividing sections 120 are arranged at left and right intervals, so that the space of the end plate 300 can be further utilized.
The two hydrogen and cooling liquid boxes 200 are divided into a third box body 230 and a fourth box body 240, the third box body 230 and the fourth box body 240 are respectively arranged at the left side and the right side of the outer end face of the end plate 300, the hydrogen and cooling liquid box 200 of the embodiment is provided with a hydrogen flow channel 210 and a cooling liquid flow channel 220, wherein the inner port of the hydrogen flow channel 210 on the third box body 230 is in butt joint with a hydrogen outlet hole 340 on the end plate 300, and the inner port of the cooling liquid flow channel 220 is in butt joint with a liquid inlet hole 350 on the end plate 300;
wherein the inner port of the hydrogen flow channel 210 on the fourth box 240 is abutted with the hydrogen inlet hole 330 on the end plate 300, and the inner port of the cooling liquid flow channel 220 is abutted with the liquid outlet hole 360 on the end plate 300.
The outer port of the hydrogen flow channel 210 on the third box 230 is a hydrogen outlet 211, the outer port of the cooling liquid flow channel 220 on the third box 230 is a cooling liquid inlet 221, the cooling liquid inlet 221 is arranged above the hydrogen outlet 211, the outer port of the hydrogen flow channel 210 on the fourth box 240 is a hydrogen inlet 212, the outer port of the cooling liquid flow channel 220 on the fourth box 240 is a cooling liquid outlet 222, and the cooling liquid outlet 222 is arranged below the hydrogen inlet 212.
Compared with the traditional fuel cell manifold, the end plate 300 is fully utilized, the two air boxes 100 and the two hydrogen and cooling liquid boxes 200 are sequentially arranged on the periphery of the outer end surface of the end plate 300, the whole occupied space is small, and the space utilization rate is high.
In addition, the hydrogen flow channels 210 and the cooling liquid flow channels 220 are arranged at intervals in the up-down direction, the third box body 230 and the fourth box body 240 are symmetrical with respect to the center of the end plate 300, so that the space of the end plate 300 is further utilized, and simultaneously, the two hydrogen and cooling liquid boxes 200 are symmetrically arranged at the left and right sides of the end plate 300, so that the hydrogen flow channel 210 on one of the hydrogen and cooling liquid boxes 200 is positioned at the bottom, and water accumulation is avoided.
The end plate 300 of this embodiment is detachably connected with the air box 100, the hydrogen and the coolant box 200, and is fixed by a plurality of bolts, one flat surface of the box body is connected with the end plate 300, a sealing ring pad is arranged between the end plate 300 and the box body, the sealing property between the end plate 300 and the box body can be improved by arranging the sealing ring pad, and a sealing groove 370 is arranged between the box body and the end plate 300, and the sealing groove 370 is used for installing the sealing ring pad.
The side wall surfaces of the first box body 150, the second box body 160, the third box body 230 and the fourth box body 240 are respectively provided with a platform surface 500, and the platform surface 500 is used for installing elements such as a temperature sensor, a pressure sensor, a conductivity sensor and the like used for monitoring data, so that the whole occupied space is small, the space utilization rate is high, and the volume power density of the galvanic pile is further improved.
And the first, second, third and fourth cartridges 150, 160, 230 and 240 are made of POM plastic.
The cooling fluid flow channel 220 and the hydrogen flow channel 210 are in curved structures, so that the pressure loss of hydrogen and cooling fluid can be effectively reduced.
The cooling liquid inlet 221, the hydrogen outlet 211, the cooling liquid outlet 222 and the hydrogen inlet 212 are also connected with the connecting sleeve 400, and the cooling liquid flow passage 220 and the hydrogen flow passage 210 are connected with the rubber tube through the connecting sleeve 400, so that the assembly is convenient.
In addition, the present embodiment also provides a fuel cell stack, which includes the multi-channel distribution manifold structure and a stack body including a plurality of electrode plates stacked together, and the inner end surface of the end plate 300 is butted with the end of the stack body.
Compared with the traditional fuel cell manifold and the electric pile, the invention transfers the distribution of cathode gas from the bipolar plate to the manifold, increases the space utilization rate of the bipolar plate, and simultaneously provides a multi-channel distribution manifold structure capable of adjusting flow, so that the gas distribution of the electric pile is more uniform and the reaction is more complete.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (10)

1. A multi-channel distribution manifold structure, characterized by: the device comprises an end plate (300), two air boxes (100) respectively positioned on the upper side and the lower side of the outer end surface of the end plate (300), and two hydrogen and cooling liquid boxes (200) respectively positioned on the left side and the right side of the outer end surface of the end plate (300);
the air box (100) is provided with an air flow passage, the air flow passage comprises a converging section (110) and a diverging section (120) which are communicated with each other, the diverging section (120) is provided with a plurality of air holes, the outer ports of the diverging section (120) are in butt joint with the air holes on the end plate (300), a circular distribution chamber (130) is arranged between the inner ends of the converging section (110) and the diverging section (120), the inner ends of the diverging section (120) are annular to the peripheral wall of the distribution chamber (130), the distribution chamber (130) is provided with a distribution stop block (140) arranged between the inner ends of the diverging section (120), and the distribution stop block (140) is in transmission connection with an adjusting driving piece which is used for adjusting the inclination angle of the distribution stop block (140) so that the distribution of different air flow rates of the diverging section (120) can be realized;
the hydrogen and cooling liquid box (200) is provided with a hydrogen flow passage (210) and a cooling liquid flow passage (220), the inner port of the hydrogen flow passage (210) is in butt joint with a hydrogen hole on the end plate (300), and the inner port of the cooling liquid flow passage (220) is in butt joint with a cooling liquid hole on the end plate (300).
2. A multi-channel distribution manifold structure according to claim 1, wherein: the outer port of the confluence section (110) is arranged at the bottom of the air box (100) and faces downwards, and the outer port of the confluence section (110) is convexly provided with a connecting sleeve (400).
3. A multi-channel distribution manifold structure according to claim 1, wherein: the utility model discloses a distribution box, including air box (100), distribution dog (140), bus section (110) are the upper and lower extension, distribution dog (140) are discoid, distribution dog (140) are equipped with and are the protruding distribution terminal surface (141) of circular arc downwards, distribution dog (140) top surface centre of a circle and air box (100) are fixed setting relatively, and the periphery side of distribution terminal surface (141) is located to a plurality of bus section (110) outer port rings.
4. A multi-channel distribution manifold structure according to claim 3, wherein: the outer ports of the plurality of the diversion sections (120) are arranged at left and right intervals, and the diversion sections (120) are flow passages with curved surface structures.
5. A multi-channel distribution manifold structure according to claim 1, wherein: and the outer ports of the cooling liquid flow channel (220) and the hydrogen flow channel (210) are respectively provided with a connecting sleeve (400) in a protruding mode.
6. A multi-channel distribution manifold structure according to claim 1, wherein: the cooling liquid flow channel (220) and the hydrogen flow channel (210) are of curved structures.
7. A multi-channel distribution manifold structure according to claim 2, wherein: the hydrogen flow channels (210) and the cooling liquid flow channels (220) are arranged at intervals in the up-down direction, and the two hydrogen and cooling liquid boxes (200) are arranged in a central symmetry manner by the center of the end plate (300).
8. A multi-channel distribution manifold structure according to claim 1, wherein: sealing ring gaskets are arranged between the end plate (300) and the air box (100), and between the end plate and the hydrogen and cooling liquid box (200).
9. A multi-channel distribution manifold structure according to claim 1, wherein: a platform surface (500) is reserved on the side wall surface of the air box (100) and the side wall surface of the hydrogen and cooling liquid box (200), the air box (100) at the upper part is an air inlet box, and the air box (100) at the lower part is an air outlet box.
10. A fuel cell stack characterized by: a multi-channel distribution manifold structure according to any one of claims 1 to 9, further comprising a pile body formed by stacking a plurality of polar plates, wherein the inner end surface of the end plate (300) is connected with the end of the pile body.
CN202211527562.2A 2022-12-01 2022-12-01 Multi-channel distribution manifold structure and fuel cell stack Pending CN116053504A (en)

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Application Number Priority Date Filing Date Title
CN202211527562.2A CN116053504A (en) 2022-12-01 2022-12-01 Multi-channel distribution manifold structure and fuel cell stack

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Application Number Priority Date Filing Date Title
CN202211527562.2A CN116053504A (en) 2022-12-01 2022-12-01 Multi-channel distribution manifold structure and fuel cell stack

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CN116053504A true CN116053504A (en) 2023-05-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116893352A (en) * 2023-07-25 2023-10-17 广东佛燃科技有限公司 Solid oxide fuel cell test platform and test method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116893352A (en) * 2023-07-25 2023-10-17 广东佛燃科技有限公司 Solid oxide fuel cell test platform and test method
CN116893352B (en) * 2023-07-25 2024-03-26 广东佛燃科技有限公司 Solid oxide fuel cell test platform and test method

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