CN115528266A - Fuel cell bipolar plate flow guide area supporting structure - Google Patents

Fuel cell bipolar plate flow guide area supporting structure Download PDF

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Publication number
CN115528266A
CN115528266A CN202211307880.8A CN202211307880A CN115528266A CN 115528266 A CN115528266 A CN 115528266A CN 202211307880 A CN202211307880 A CN 202211307880A CN 115528266 A CN115528266 A CN 115528266A
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CN
China
Prior art keywords
gas
anode
cathode
plate
area
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Pending
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CN202211307880.8A
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Chinese (zh)
Inventor
包孟嘉
沈婉婷
王勃
李树德
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Jinhua Hydrogen Technology Co ltd
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Jinhua Hydrogen Technology Co ltd
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Application filed by Jinhua Hydrogen Technology Co ltd filed Critical Jinhua Hydrogen Technology Co ltd
Priority to CN202211307880.8A priority Critical patent/CN115528266A/en
Publication of CN115528266A publication Critical patent/CN115528266A/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
    • H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
    • 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
    • H01M8/02—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
    • H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
    • 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
    • H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
    • 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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • 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 flow guide area supporting structure of a bipolar plate of a fuel cell, which comprises an anode plate, a cathode plate and a membrane electrode assembly, wherein the membrane electrode assembly is positioned between the anode plate and the cathode plate; comprises a gas inlet and outlet area, a gas distribution area and a gas reaction area; the gas reaction area is positioned in the middle of the fuel cell unit, the gas distribution areas are positioned at two ends of the gas reaction area, the gas inlet and outlet areas are positioned at one end of the gas distribution area, which is far away from the gas reaction area, the sealing between the membrane electrode assembly and the bipolar plate can be ensured through the structural design of the supporting structure on the anode plate, so that the ridge of the cooling flow field can bear enough supporting force when the gas pressure is reduced under the emergency stop working condition, the integral strength of the polar plate is improved, the deformation and even breakage of the polar plate are avoided, the reliability of the polar plate is improved, and meanwhile, the covering area of the gas diffusion layer is stopped at the reaction area of the bipolar plate.

Description

Fuel cell bipolar plate flow guide area supporting structure
Technical Field
The invention relates to the technical field of fuel cells, in particular to a flow guide area supporting structure of a bipolar plate of a fuel cell.
Background
The proton exchange membrane fuel cell is a power generation device which takes hydrogen and oxygen in air as reactants and carries out electrochemical reaction to generate electric energy, only generates water in the reaction process, and has no pollution to the environment. The electrochemical reaction efficiency is high, no noise and no pollution are generated in the operation process, the hydrogenation speed is high, and the endurance is long. The proton exchange membrane fuel cell is formed by stacking an anode plate, a membrane electrode assembly and a cathode plate in sequence, then stacking auxiliary parts, and performing press stacking assembly;
as shown in fig. 7, the membrane electrode assembly includes a proton exchange membrane coated with a catalyst, an anode-side gas diffusion layer, a cathode-side gas diffusion layer, and a frame, and the components are bonded to each other, and the joint between the frame and the membrane and the diffusion layer has a larger thickness than the rest of the components, which may cause a concentrated stress on a part of the regions.
There are generally three solutions:
in the first scheme, as shown in fig. 8, no special treatment is adopted, the problem of stress concentration in partial areas is caused by thickness difference, and meanwhile, sufficient support cannot be provided for the cathode plate ridge, so that the reliability of the electrode plate is reduced;
as shown in fig. 9, the anode gas diffusion layer 302 and the cathode gas diffusion layer 303 cover all the reaction areas and the distribution areas, and simultaneously sink to a certain height at the anode and cathode plates in the overlapping area for compensation, so as to ensure the sealing between the membrane electrode assembly and the bipolar plate, but may cause the increase of flow resistance caused by the reduction of the groove depth, and at the same time, cause the reduction of the cooling effect; due to the existence of the sinking structure, the problem of uneven distribution of the gas inlet and the gas outlet is worsened, and the processing difficulty is improved; when the system has an emergency stop working condition caused by the gas supply problem of cathode and anode gases, the pressure on the gas side is reduced, the pressure reduction in a water side distribution area is delayed, and the situation of overlarge pressure on the water side can occur under the condition that a corresponding area does not have enough supporting force, so that the electrode sealing is weakened, and even the polar plate is subjected to brittle fracture;
as shown in fig. 10, a certain height is sunk at the anode and cathode plates in the overlapping region for compensation, but no carbon paper is extended, which increases the difficulty in distributing the reaction gas, worsens the problem of uneven distribution of the gas inlet and outlet, and increases the complexity of design and manufacture of the electrode plates; the overall structure may lack support due to the lack of coverage of the gas diffusion layers in the distribution area.
Disclosure of Invention
The invention aims to provide a fuel cell bipolar plate flow guide area supporting structure to overcome the defects in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the application discloses a fuel cell bipolar plate flow guide area supporting structure, which comprises an anode plate, a cathode plate and a membrane electrode assembly, wherein the membrane electrode assembly is positioned between the anode plate and the cathode plate; comprises a gas inlet and outlet area, a gas distribution area and a gas reaction area; the gas reaction area is positioned in the middle of the fuel cell unit, the gas distribution area is positioned at two ends of the gas reaction area, and the gas inlet and outlet area is positioned at one end of the gas distribution area, which is far away from the gas reaction area;
the gas inlet and outlet areas of the anode plate, the cathode plate and the membrane electrode assembly are respectively provided with an anode gas inlet, an anode gas outlet, a cathode gas inlet, a cathode gas outlet, a coolant inlet and a coolant outlet, wherein the anode gas inlet, the cathode gas outlet and the coolant outlet are positioned at the same end; the anode gas outlet, the cathode gas inlet and the coolant inlet are positioned at the same end;
an anode gas inlet distribution area and an anode gas outlet distribution area are arranged on the gas distribution area on one side of the anode plate close to the membrane electrode assembly, and an anode gas flow channel is arranged on the gas reaction area on one side of the anode plate close to the membrane electrode assembly;
a coolant inlet distribution area and a coolant outlet distribution area are arranged on the gas distribution area on the side of the anode plate far away from the membrane electrode assembly, and a coolant flow channel is arranged on the gas reaction area on the side of the anode plate far away from the membrane electrode assembly;
a cathode gas inlet distribution area and a cathode gas outlet distribution area are arranged on the gas distribution area of one side of the cathode plate close to the membrane electrode assembly, and a cathode gas flow channel is arranged on the gas reaction area of one side of the cathode plate close to the membrane electrode assembly;
support structures are arranged in the anode gas inlet distribution area and the anode gas outlet distribution area; a cathode gas outlet distribution area is arranged on one side of the cathode plate facing the membrane electrode assembly, and the support structure is opposite to the cathode gas outlet distribution area;
the membrane electrode assembly comprises a proton exchange membrane coated with a catalyst, an anode side gas diffusion layer, a cathode side gas diffusion layer and a frame;
the anode side gas diffusion layer and the cathode side gas diffusion layer only cover the gas reaction areas of the anode plate and the cathode plate;
the gas distribution zone is at a depth corresponding to the gas reaction zone.
Preferably, the support structure comprises a strip of glue provided within the anode gas inlet distribution area and the anode gas outlet distribution area.
Preferably, an anode gas sealing groove and a coolant sealing groove are formed in the anode plate; the anode gas sealing groove is positioned on the outer peripheral side of the anode gas flow channel and the inlet and outlet of the anode gas, the cathode gas and the coolant, and the coolant sealing groove is positioned on the outer peripheral side of the coolant flow channel and the inlet and outlet of the anode gas, the cathode gas and the coolant; and the cathode plate is provided with a cathode gas sealing groove which is positioned at the periphery sides of the cathode gas flow passage and the inlet and outlet of the anode gas, the cathode gas and the coolant.
Preferably, the support structure material is one of organic silica gel, polyolefin, polyurethane, polyamide, polyester or ethylene propylene diene.
Preferably, the manufacturing method of the supporting structure is one of dispensing, silk-screen printing or injection molding.
Preferably, the anode plate and the cathode plate are made of one of graphite or composite graphite materials.
Preferably, ridges are arranged on the gas distribution areas of the cathode plate corresponding to the support structures, the ridges are uniformly distributed, and the ridges are opposite to the adhesive tapes.
Preferably, the support structure and the ridges of the cathode gas outlet distribution area form an angle of 150 ° to 180 °.
Preferably, the width of the supporting structure ranges from 0.5mm to 2mm.
Preferably, the supporting structure is a sectional type rubber strip, and the distance between the sectional type rubber strips is 1mm to 4mm.
The invention has the beneficial effects that:
(1) The structural design of the supporting structure on the anode plate can ensure the sealing between the membrane electrode assembly and the bipolar plate, so that the ridge of the cooling flow field can bear enough supporting force when the gas pressure is reduced under the emergency stop working condition, the integral strength of the polar plate is improved, the deformation and even the fracture of the polar plate are avoided, the reliability of the polar plate is improved, and meanwhile, the covering area of the gas diffusion layer is stopped at the reaction area of the bipolar plate;
(2) The structural design of the supporting structure on the anode plate can be combined with the ridges of the cathode gas outlet distribution area of the cathode plate, so that the ridges of the cooling flow field can receive enough supporting force when the gas pressure is reduced under the emergency stop working condition on the basis of ensuring the sealing property, the overall strength of the polar plate is improved, the deformation and even breakage of the polar plate are avoided, and the reliability of the polar plate is improved.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic perspective view of a fuel cell bipolar plate flow guide region support structure according to the present invention;
figure 2 is a schematic plan view of the anode plate of the present invention;
figure 3 is a schematic plan view of another side of the anode plate of the present invention;
FIG. 4 is a schematic plan view of the cathode plate of the present invention;
FIG. 5 is a schematic plan view of the structure at the membrane electrode assembly of the present invention;
FIG. 6 is a schematic plan view of the structure at the support structure of the present invention;
FIG. 7 is a schematic view of a prior art membrane electrode configuration;
FIG. 8 is a schematic view of a prior art fuel cell bipolar plate flow guide area configuration;
FIG. 9 is a schematic view of a prior art fuel cell bipolar plate flow guide area configuration;
FIG. 10 is a schematic view of a prior art fuel cell bipolar plate flow guide area configuration;
in the figure: 1-anode plate, 101-anode gas inlet, 102-anode gas outlet, 103-anode gas inlet distribution region, 104-anode gas flow channel, 105-anode gas outlet distribution region, 111-cathode gas inlet, 112-cathode gas outlet, 121-coolant inlet, 122-coolant outlet, 123-coolant inlet distribution region, 124-coolant flow channel, 125-coolant outlet distribution region, 131-anode gas seal groove, 141-coolant seal groove, 151-support structure, 2-cathode plate, 213-cathode gas inlet distribution region, 214-cathode gas flow channel, 215-cathode gas outlet distribution region, 231-cathode gas seal groove, 3-membrane electrode assembly, 301-proton exchange membrane, 302-anode side gas diffusion layer, 303-cathode side gas diffusion layer, 304-frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the detailed description herein of specific embodiments is intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to 1~6, the embodiment of the present invention provides a fuel cell bipolar plate flow guiding region supporting structure, including an anode plate 1, a cathode plate 2 and a membrane electrode assembly 3, where the membrane electrode assembly 3 is located between the anode plate 1 and the cathode plate 2; comprises a gas inlet and outlet area, a gas distribution area and a gas reaction area; the gas reaction zone is positioned in the middle of the fuel cell bipolar plate, the gas distribution zone is positioned at two ends of the gas reaction zone, and the gas inlet and outlet zone is positioned at one end of the gas distribution zone away from the gas reaction zone;
the gas inlet and outlet areas of the anode plate 1, the cathode plate 2 and the membrane electrode assembly 3 are respectively provided with an anode gas inlet 101, an anode gas outlet 102, a cathode gas inlet 111, a cathode gas outlet 112, a coolant inlet 121 and a coolant outlet 122, wherein the anode gas inlet 101, the cathode gas outlet 112 and the coolant outlet 122 are positioned at the same end; the anode gas outlet 102, the cathode gas inlet 111, and the coolant inlet 121 are located at the same end;
an anode gas inlet distribution area 103 and an anode gas outlet distribution area 105 are arranged on the gas distribution area of the anode plate 1 close to the membrane electrode assembly 3, and an anode gas flow channel 104 is arranged on the gas reaction area of the anode plate 1 close to the membrane electrode assembly 3;
a coolant inlet distribution area 123 and a coolant outlet distribution area 125 are arranged on the gas distribution area on the side of the anode plate 1 away from the membrane electrode assembly 3, and a coolant flow channel 124 is arranged on the gas reaction area on the side of the anode plate 1 away from the membrane electrode assembly 3;
a cathode gas inlet distribution area 213 and a cathode gas outlet distribution area 215 are arranged on the gas distribution area of the cathode plate 2 close to the membrane electrode assembly 3, and a cathode gas flow channel 214 is arranged on the gas reaction area of the cathode plate 2 close to the membrane electrode assembly 3;
a support structure 151 is arranged in the anode gas inlet distribution area 103 and the anode gas outlet distribution area 105; the cathode plate 2 is provided with a cathode gas outlet distribution area 215 on one side facing the membrane electrode assembly 3, and the support structure 151 is opposite to the cathode gas outlet distribution area 215;
the membrane electrode assembly 3 comprises a proton exchange membrane 301 coated with a catalyst, an anode side gas diffusion layer 302, a cathode side gas diffusion layer 303 and a frame 304;
the anode-side gas diffusion layer 302 and the cathode-side gas diffusion layer 303 cover only the gas reaction areas of the anode plate 1 and the cathode plate 2;
the gas distribution zone is at a depth corresponding to the gas reaction zone.
The support structure comprises strips of glue provided within the anode gas inlet distribution area 103 and the anode gas outlet distribution area 105.
An anode gas seal groove 131 and a coolant seal groove 141 are formed in the anode plate 1; the anode gas sealing groove 131 is located on the outer peripheral side of the anode gas flow passage 104 and the inlet and outlet for anode gas, cathode gas, and coolant, and the coolant sealing groove 141 is located on the outer peripheral side of the coolant flow passage 124 and the inlet and outlet for anode gas, cathode gas, and coolant; the cathode plate 2 is provided with a cathode gas sealing groove 231, and the cathode gas sealing groove 231 is located at the outer peripheral sides of the cathode gas flow passage 214 and the inlet and outlet of the anode gas, the cathode gas and the coolant.
The supporting structure 151 is made of one of organic silica gel, polyolefin, polyurethane, polyamide, polyester or ethylene propylene diene monomer.
The manufacturing method of the supporting structure is one of dispensing, silk-screen printing or injection molding.
The anode plate 1 and the cathode plate 2 are made of one of graphite or composite graphite materials.
Ridges are arranged on the gas distribution areas of the cathode plate 2 corresponding to the supporting structures, the ridges are uniformly distributed, and the ridges are opposite to the adhesive tapes.
The support structure and the ridges of the cathode gas outlet distribution area 215 form an angle of 150 to 180.
The width range of the supporting structure is 0.5mm to 2mm.
The supporting structure is a sectional type rubber strip, and the distance between the sectional type rubber strips is 1mm-4 mm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A fuel cell bipolar plate diversion area supporting structure comprises an anode plate, a cathode plate and a membrane electrode assembly, wherein the membrane electrode assembly is positioned between the anode plate and the cathode plate; the method is characterized in that: comprises a gas inlet and outlet area, a gas distribution area and a gas reaction area; the gas reaction area is positioned in the middle of the fuel cell unit, the gas distribution area is positioned at two ends of the gas reaction area, and the gas inlet and outlet area is positioned at one end of the gas distribution area, which is far away from the gas reaction area;
the gas inlet and outlet areas of the anode plate, the cathode plate and the membrane electrode assembly are respectively provided with an anode gas inlet, an anode gas outlet, a cathode gas inlet, a cathode gas outlet, a coolant inlet and a coolant outlet, wherein the anode gas inlet, the cathode gas outlet and the coolant outlet are positioned at the same end; the anode gas outlet, the cathode gas inlet and the coolant inlet are positioned at the same end;
an anode gas inlet distribution area and an anode gas outlet distribution area are arranged on the gas distribution area on one side of the anode plate close to the membrane electrode assembly, and an anode gas flow channel is arranged on the gas reaction area on one side of the anode plate close to the membrane electrode assembly;
a coolant inlet distribution area and a coolant outlet distribution area are arranged on the gas distribution area on the side, away from the membrane electrode assembly, of the anode plate, and a coolant flow channel is arranged on the gas reaction area on the side, away from the membrane electrode assembly, of the anode plate;
a cathode gas inlet distribution area and a cathode gas outlet distribution area are arranged on the gas distribution area of the cathode plate on the side close to the membrane electrode assembly, and a cathode gas flow channel is arranged on the gas reaction area of the cathode plate on the side close to the membrane electrode assembly;
support structures are arranged in the anode gas inlet distribution area and the anode gas outlet distribution area; a cathode gas outlet distribution area is arranged on one side of the cathode plate facing the membrane electrode assembly, and the support structure is opposite to the cathode gas outlet distribution area;
the membrane electrode assembly comprises a proton exchange membrane coated with a catalyst, an anode side gas diffusion layer, a cathode side gas diffusion layer and a frame;
the anode side gas diffusion layer and the cathode side gas diffusion layer only cover the gas reaction areas of the anode plate and the cathode plate;
the gas distribution zone is at a depth corresponding to the gas reaction zone.
2. A fuel cell bipolar plate flow field support structure as claimed in claim 1, wherein: the support structure comprises a strip of glue provided within the anode gas inlet distribution area and the anode gas outlet distribution area.
3. A fuel cell bipolar plate flow field support structure as claimed in claim 1, wherein: an anode gas sealing groove and a coolant sealing groove are formed in the anode plate; the anode gas sealing groove is positioned on the outer peripheral side of the anode gas flow channel and the inlet and outlet of the anode gas, the cathode gas and the coolant, and the coolant sealing groove is positioned on the outer peripheral side of the coolant flow channel and the inlet and outlet of the anode gas, the cathode gas and the coolant; and a cathode gas sealing groove is arranged on the cathode plate and is positioned on the periphery sides of the cathode gas flow passage and the inlet and outlet of the anode gas, the cathode gas and the coolant.
4. A fuel cell bipolar plate flow field support structure as claimed in claim 1, wherein: the support structure material is one of organic silica gel, polyolefin, polyurethane, polyamide, polyester or ethylene propylene diene.
5. A fuel cell bipolar plate flow field support structure as claimed in claim 1, wherein: the manufacturing method of the supporting structure is one of dispensing, silk-screen printing or injection molding.
6. A fuel cell bipolar plate flow-guide area support structure as claimed in claim 1, wherein: the anode plate and the cathode plate are made of graphite or composite graphite materials.
7. A fuel cell bipolar plate flow field support structure as claimed in claim 1, wherein: the gas distribution areas of the cathode plate corresponding to the support structures are provided with ridges which are uniformly distributed, and the ridges are opposite to the adhesive tapes.
8. A fuel cell bipolar plate flow field support structure as claimed in claim 7, wherein: the support structure and the ridge of the cathode gas outlet distribution area form an included angle of 150-180 degrees.
9. A fuel cell bipolar plate flow field support structure as claimed in claim 1, wherein: the width range of the supporting structure is 0.5mm to 2mm.
10. A fuel cell bipolar plate flow-guide area support structure as claimed in claim 2, wherein: the supporting structure is a sectional type rubber strip, and the distance between the sectional type rubber strips is 1mm-4 mm.
CN202211307880.8A 2022-10-25 2022-10-25 Fuel cell bipolar plate flow guide area supporting structure Pending CN115528266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211307880.8A CN115528266A (en) 2022-10-25 2022-10-25 Fuel cell bipolar plate flow guide area supporting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211307880.8A CN115528266A (en) 2022-10-25 2022-10-25 Fuel cell bipolar plate flow guide area supporting structure

Publications (1)

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CN115528266A true CN115528266A (en) 2022-12-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116742038A (en) * 2023-05-18 2023-09-12 上海氢晨新能源科技有限公司 Battery unit, battery module and power supply system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116742038A (en) * 2023-05-18 2023-09-12 上海氢晨新能源科技有限公司 Battery unit, battery module and power supply system
CN116742038B (en) * 2023-05-18 2024-02-23 上海氢晨新能源科技有限公司 Battery unit, battery module and power supply system

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