CN114512691B - Be applicable to point and glue shaping bipolar plate seal groove structure - Google Patents

Be applicable to point and glue shaping bipolar plate seal groove structure Download PDF

Info

Publication number
CN114512691B
CN114512691B CN202210141025.8A CN202210141025A CN114512691B CN 114512691 B CN114512691 B CN 114512691B CN 202210141025 A CN202210141025 A CN 202210141025A CN 114512691 B CN114512691 B CN 114512691B
Authority
CN
China
Prior art keywords
anode
cathode
sealing groove
manifold
boss
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.)
Active
Application number
CN202210141025.8A
Other languages
Chinese (zh)
Other versions
CN114512691A (en
Inventor
邓高明
潘陈兵
高冀
潘立升
陈大华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Ruihydrogen Power Technology Co ltd
Original Assignee
Anhui Ruihydrogen Power Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Ruihydrogen Power Technology Co ltd filed Critical Anhui Ruihydrogen Power Technology Co ltd
Priority to CN202210141025.8A priority Critical patent/CN114512691B/en
Publication of CN114512691A publication Critical patent/CN114512691A/en
Application granted granted Critical
Publication of CN114512691B publication Critical patent/CN114512691B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01M8/0276—Sealing means characterised by their form
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • 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 sealing groove structure of a bipolar plate suitable for dispensing forming, which comprises a cathode hydrogen inlet sealing groove, a cathode hydrogen outlet sealing groove, a cathode air inlet sealing groove, a cathode air outlet sealing groove, a cathode cooling water inlet sealing groove, a cathode cooling water outlet sealing groove and a cathode flow field sealing groove which are arranged on a cathode plate, and an anode hydrogen inlet sealing groove, an anode hydrogen outlet sealing groove, an anode air inlet sealing groove, an anode air outlet sealing groove, an anode cooling water inlet sealing groove, an anode cooling water outlet sealing groove and an anode flow field sealing groove which are arranged on an anode plate. The invention is suitable for the sealing groove structure of the bipolar plate formed by dispensing, can realize batch, flexible and low-cost production, has simple sealing structure, convenient processing, reliable performance and good sealing effect, and plays a certain role in protecting the membrane electrode.

Description

Bipolar plate sealing groove structure suitable for glue dispensing forming
Technical Field
The invention belongs to the technical field of fuel cell bipolar plates, and particularly relates to a sealing groove structure of a bipolar plate suitable for glue dispensing forming.
Background
The hydrogen fuel cell is a device for directly converting chemical energy into electric energy, is different from the restriction of Carnot cycle of the traditional heat engine, and is a high-efficiency and clean energy source. During operation, hydrogen and oxygen are introduced into different cavities on two sides through the partition of the proton exchange membrane. The bipolar plate is generally composed of two unipolar plates, namely a cathode plate and an anode plate, which are respectively used as channels for hydrogen and oxygen transportation, and then the reaction gas is sent to a three-phase interface where chemical reaction occurs by matching with the dispersion and refinement effects of a gas diffusion layer. In order to eliminate the on-way pressure loss and the local pressure loss of the gas during the movement process and increase the energy steve voltage to increase the efficiency of the fuel cell, the high-voltage fuel cell stack is the development direction of the mainstream at present.
The manufacturing method of the fuel cell bipolar plate has various types, and the existing fuel cell bipolar plate has the following defects in the manufacturing process:
1. the GDL is coated in a subarea manner, only the Z direction of the GDL is shielded, and the liquid rubber can flow into a X, Y direction channel during impregnation to fill gaps in the GDL and reduce the porosity;
2. in the method for injection molding of the bipolar plate, the surface of the sealing part of the bipolar plate needs to be coated with an adhesive, the requirement on the progress of a rubber vulcanization mold is high, otherwise, the sealant overflows and flashes cover the interior of the flow in the vulcanization process and need to be cleaned again. The defects of complex process and high cost are inevitably caused;
3. the method for molding the sealing element by using the mold firstly needs to seal and solidify the mold, thereby prolonging the development period of products and increasing the cost. The formed sealing element needs to be manually assembled on the bipolar plate, so that the working strength is high; the sealing element is easy to be subjected to secondary pollution in the transportation process;
4. the automatic equipment is used for assembling the sealing strips, and due to the structural characteristic that the sealing strips are long and thin and are easy to distort, each sealing strip needs to be shaped manually before the sealing strips are picked up by the suckers, so that the working strength is high, the equipment tool is fixed, and flexible production cannot be realized.
In addition, patent document No. CN 110783599A discloses a method for dispensing graphite plates of hydrogen fuel cells, which employs a single adhesive tape formed by one-step dispensing, and is prone to slip under pressure to cause air leakage, but the structure of the sealing groove is not explained.
Patent document CN110783600a discloses a double-glue-strip glue dispensing method for a hydrogen fuel cell electrode plate, which includes two glue dispensing processes, so as to prevent the sealing strips from slipping after butt joint, but the glue type formed in the first time can be damaged due to the influence of glue gravity and surface tension during the second glue dispensing process, and the sealing performance of the bipolar plate after forming is affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sealing groove structure of a bipolar plate suitable for dispensing forming, and aims to improve the sealing performance of the bipolar plate of a hydrogen fuel cell.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the sealing groove structure suitable for dispensing and forming the bipolar plate comprises a cathode hydrogen inlet sealing groove arranged at a cathode hydrogen inlet manifold of a cathode plate, a cathode hydrogen outlet sealing groove arranged at a cathode hydrogen outlet manifold of the cathode plate, a cathode air inlet sealing groove arranged at a cathode air inlet manifold of the cathode plate, a cathode air outlet sealing groove arranged at a cathode air outlet manifold of the cathode plate, a cathode cooling water inlet sealing groove arranged at a cathode cooling water inlet manifold of the cathode plate, a cathode cooling water outlet sealing groove arranged at a cathode cooling water outlet manifold of the cathode plate, a cathode flow field sealing groove arranged in a flow field area of the cathode plate, an anode hydrogen inlet sealing groove arranged at an anode hydrogen inlet manifold of the anode plate, an anode hydrogen outlet sealing groove arranged at an anode hydrogen outlet manifold of the anode plate, an anode air inlet sealing groove arranged at an anode air inlet manifold of the anode plate, an anode cooling water inlet sealing groove arranged at an anode cooling water inlet manifold of the anode plate, an anode cooling water outlet sealing groove arranged at an anode cooling water outlet manifold of the anode plate and an anode flow field sealing groove arranged in a flow field area of the flow field.
The cathode hydrogen inlet sealing groove, the cathode air outlet sealing groove and the cathode cooling water inlet sealing groove are located on one side of the cathode flow field sealing groove, and the cathode hydrogen outlet sealing groove, the cathode air inlet sealing groove and the cathode cooling water outlet sealing groove are located on the other side of the cathode flow field sealing groove.
The anode hydrogen inlet sealing groove, the anode air outlet sealing groove and the anode cooling water inlet sealing groove are located on one side of the anode flow field sealing groove, and the anode hydrogen outlet sealing groove, the anode air inlet sealing groove and the anode cooling water outlet sealing groove are located on the other side of the anode flow field sealing groove.
The cathode hydrogen inlet sealing groove, the cathode air outlet sealing groove, the cathode cooling water inlet sealing groove, the cathode hydrogen outlet sealing groove, the cathode air inlet sealing groove, the cathode cooling water outlet sealing groove, the anode hydrogen inlet sealing groove, the anode air outlet sealing groove, the anode cooling water inlet sealing groove, the anode hydrogen outlet sealing groove, the anode air inlet sealing groove and the anode cooling water outlet sealing groove are independent functional areas and have no junction points with each other.
The sealing structures formed between the cathode hydrogen inlet sealing groove and the anode hydrogen inlet sealing groove, between the cathode air outlet sealing groove and the anode air outlet sealing groove, between the cathode cooling water inlet sealing groove and the anode cooling water inlet sealing groove, between the cathode hydrogen outlet sealing groove and the anode hydrogen outlet sealing groove, between the cathode air inlet sealing groove and the anode air inlet sealing groove, and between the cathode cooling water outlet sealing groove and the anode cooling water outlet sealing groove are of a 'return' shape structure.
Bosses for supporting the sealing strips are arranged in the cathode hydrogen inlet sealing groove and the cathode hydrogen outlet sealing groove.
Bosses for supporting sealing strips are arranged in the cathode air inlet sealing groove and the cathode air outlet sealing groove.
Bosses for supporting the sealing strips are arranged in the cathode cooling water inlet sealing groove and the cathode cooling water outlet sealing groove.
Bosses for supporting sealing strips are arranged in the anode hydrogen inlet sealing groove and the anode hydrogen outlet sealing groove.
Bosses for supporting sealing strips are arranged in the anode air inlet sealing groove and the anode air outlet sealing groove.
Bosses for supporting the sealing strips are arranged in the anode cooling water inlet sealing groove and the anode cooling water outlet sealing groove.
The height of the boss is 0.2mm.
The invention is suitable for the sealing groove structure of the bipolar plate formed by dispensing, can realize batch, flexible and low-cost production, has simple sealing structure, convenient processing, reliable performance and good sealing effect, and plays a certain role in protecting the membrane electrode.
Drawings
FIG. 1 is a schematic view of a cathode side sealing structure of a bipolar plate;
FIG. 2 is a schematic view of a bipolar plate anode side sealing structure;
FIG. 3 is a schematic cross-sectional view of a boss within a seal groove;
FIG. 4 is a cross-sectional view showing the sealing effect after the MEA is assembled to the unit cell;
FIG. 5 is a top view of the seal structure in the shape of a Chinese character 'hui' illustrated by the example of the male and female sides of the air manifold;
fig. 6 is a schematic view showing a height of a pressure bearing face protrusion;
the labels in the above figures are: 1. a cathode plate flow field; 2. a cathode flow field seal groove; 3. a cathode air inlet seal groove; 4. a cathode hydrogen inlet seal groove; 5. a cathode cooling water inlet sealing groove; 6. a cathode air outlet seal groove; 7. a cathode hydrogen outlet seal groove; 8. a cathode cooling water outlet sealing groove; 9. an anode plate flow field; 10. an anode flow field seal groove; 11. an anode air inlet seal groove; 12. an anode hydrogen inlet seal groove; 13. an anode cooling water inlet sealing groove; 14. an anode air outlet seal groove; 15. an anode hydrogen outlet sealing groove; 16. an anode cooling water outlet sealing groove; 17. a boss; 18. a cathode plate; 19. an anode plate; 20. MEA (membrane electrode assembly); 21. a cathode flow field seal strip; 22. a cathode manifold seal strip; 23. an anode flow field sealing strip; 24. an anode manifold seal strip; 25. a pressure bearing face boss; 26. compressed single-sided GDL.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
As shown in fig. 1 to 6, the present invention provides a sealing groove structure suitable for dispensing molding of bipolar plates, which includes a cathode hydrogen inlet sealing groove 4 disposed at a cathode hydrogen inlet manifold of a cathode plate, a cathode hydrogen outlet sealing groove 7 disposed at a cathode hydrogen outlet manifold of the cathode plate, a cathode air inlet sealing groove 3 disposed at a cathode air inlet manifold of the cathode plate, a cathode air outlet sealing groove 6 disposed at a cathode air outlet manifold of the cathode plate, a cathode cooling water inlet sealing groove 5 disposed at a cathode cooling water inlet manifold of the cathode plate, a cathode cooling water outlet sealing groove 8 disposed at a cathode cooling water outlet manifold of the cathode plate, a cathode flow field sealing groove 2 disposed at a flow field area of the cathode plate, an anode hydrogen inlet sealing groove 12 disposed at an anode hydrogen inlet manifold of the anode plate, an anode hydrogen outlet sealing groove 15 disposed at an anode hydrogen outlet manifold of the anode plate, an anode air inlet sealing groove 11 disposed at an anode air inlet manifold of the anode plate, an anode air outlet sealing groove 14 disposed at an anode air outlet manifold of the anode plate, an anode air outlet sealing groove 13 disposed at an anode cooling water inlet manifold of the anode cooling water inlet manifold, and an anode cooling water outlet sealing groove 16 disposed at an anode flow field area of the anode cooling water outlet sealing groove.
Specifically, as shown in fig. 1, a cathode flow field sealing strip 21 is disposed in the cathode flow field sealing groove 2, a cathode manifold sealing strip 22 is disposed in the cathode hydrogen inlet sealing groove 4, the cathode air outlet sealing groove 6 and the cathode cooling water inlet sealing groove 5, the cathode cooling water inlet sealing groove 5 is disposed on one side of the cathode flow field sealing groove 2, the cathode cooling water inlet sealing groove 5 is disposed between the cathode hydrogen inlet sealing groove 4 and the cathode air outlet sealing groove 6, the cathode hydrogen outlet sealing groove 7, the cathode air inlet sealing groove 3 and the cathode cooling water outlet sealing groove 8 are disposed with the cathode manifold sealing strip 22, the cathode hydrogen outlet sealing groove 7, the cathode air inlet sealing groove 3 and the cathode cooling water outlet sealing groove 8 are disposed on the other side of the cathode flow field sealing groove 2, and the cathode air inlet sealing groove 3 is disposed between the cathode hydrogen outlet sealing groove 7 and the cathode air inlet sealing groove 3.
As shown in fig. 2, an anode flow field sealing strip 23 is disposed in the anode flow field sealing groove 10, an anode manifold sealing strip 24 is disposed in the anode hydrogen inlet sealing groove 12, the anode air outlet sealing groove 14 and the anode cooling water inlet sealing groove 13, the anode hydrogen inlet sealing groove 12, the anode air outlet sealing groove 14 and the anode cooling water inlet sealing groove 13 are disposed on one side of the anode flow field sealing groove 10, the anode cooling water inlet sealing groove 13 is disposed between the anode hydrogen inlet sealing groove 12 and the anode air outlet sealing groove 14, the anode hydrogen outlet sealing groove 15, the anode air inlet sealing groove 11 and the anode cooling water outlet sealing groove 16 are disposed with the anode manifold sealing strip 24, the anode hydrogen outlet sealing groove 15, the anode air inlet sealing groove 11 and the anode cooling water outlet sealing groove 16 are disposed on the other side of the anode flow field sealing groove 10, and the anode air inlet sealing groove 11 is disposed between the anode hydrogen outlet sealing groove 15 and the anode air inlet sealing groove 11.
As shown in fig. 1 and fig. 2, grooves are independently formed in different regions of the cathode side and the anode side of the bipolar plate, that is, a sealing groove is arranged in a flow field region for independent sealing, a hydrogen inlet/outlet manifold, an air inlet/outlet manifold and a cooling water inlet/outlet manifold are respectively provided with an independent sealing groove, and a sealing strip is arranged in the sealing groove, so that the sealing performance of the bipolar plate can be improved. During dispensing forming, smooth transition of the lap joint is ensured by controlling the glue outlet amount at the starting point and the ending point and the needle head pulling-back action. All sealing grooves are divided into regions independently according to functions, so that junction points among sealing grooves with different functions are avoided, T-shaped lap joints do not appear, and the technical difficulty that the dispensing process is not easy to control is avoided. The sealing grooves of the cathode plate and the anode plate are different in size, a 'return' structure is structurally formed, the outer wall of the inner sealing groove is adjacent to the inner wall of the outer sealing groove, and the phenomenon that the semi-circular sealing section of the dispensing sealing strip is prone to sliding in the direction of X, Y when the Z direction is pressed is avoided. Two sealing strips are arranged between the four adjacent sealing areas, so that the potential safety hazard caused by the blow-by of reaction gas, especially the mixing of air and hydrogen, can be avoided. Meanwhile, when the air tightness is detected, the sealing failure part can be rapidly distinguished.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode manifold sealing strip 22 is disposed in the cathode hydrogen inlet sealing groove 4, the cathode hydrogen inlet sealing groove 4 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode hydrogen inlet sealing groove 4, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode hydrogen inlet sealing groove 4. The boss 17 is located at the middle position of the cathode hydrogen inlet sealing groove 4, that is, the boss 17 is located at the middle position of two opposite inner side walls of the cathode hydrogen inlet sealing groove 4, the bottom wall of the cathode hydrogen inlet sealing groove 4 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the cathode manifold sealing strip 22 in the cathode hydrogen inlet sealing groove 4 is compressed in the Z direction, the boss 17 can play a role of supporting the cathode manifold sealing strip 22 in the X, Y direction, the stability of the cathode manifold sealing strip 22 under stress can be improved, meanwhile, a space is provided for the deformation of the cathode manifold sealing strip 22 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the cathode manifold sealing strip 22 is compressed, and the deformation and the breakage caused by the change of the cathode manifold sealing strip 22 are avoided.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode manifold sealing strip 22 is disposed in the cathode hydrogen outlet sealing groove 7, the cathode hydrogen outlet sealing groove 7 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode hydrogen outlet sealing groove 7, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode hydrogen outlet sealing groove 7. The boss 17 is located at the middle position of the cathode hydrogen outlet sealing groove 7, that is, the boss 17 is located at the middle position of two opposite inner side walls of the cathode hydrogen outlet sealing groove 7, the bottom wall of the cathode hydrogen outlet sealing groove 7 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the cathode manifold sealing strip 22 in the cathode hydrogen outlet sealing groove 7 is compressed in the Z direction, the boss 17 can play a role of supporting the cathode manifold sealing strip 22 in the X, Y direction, the stability of the cathode manifold sealing strip 22 under stress can be improved, meanwhile, a space is provided for the deformation of the cathode manifold sealing strip 22 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the cathode manifold sealing strip 22 is compressed, and the deformation and the breakage caused by the change of the cathode manifold sealing strip 22 are avoided.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode manifold sealing strip 22 is disposed in the cathode air inlet sealing groove 3, the cathode air inlet sealing groove 3 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode air inlet sealing groove 3, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode air inlet sealing groove 3. The boss 17 is also located in the middle of the cathode air inlet sealing groove 3, that is, the boss 17 is located in the middle of two opposite inner sidewalls of the cathode air inlet sealing groove 3, the bottom wall of the cathode air inlet sealing groove 3 is perpendicular to the two opposite inner sidewalls, and the height of the boss 17 is less than the height of the two opposite inner sidewalls. By arranging the boss 17, when the cathode manifold sealing strip 22 in the cathode air inlet sealing groove 3 is compressed in the Z direction, the boss 17 can play a role of supporting the cathode manifold sealing strip 22 in the X, Y direction, the stability of the cathode manifold sealing strip 22 under stress can be improved, meanwhile, a space is provided for the deformation of the cathode manifold sealing strip 22 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the cathode manifold sealing strip 22 is compressed, and the deformation and the breakage caused by the change of the cathode manifold sealing strip 22 are avoided.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode manifold sealing strip 22 is disposed in the cathode air outlet sealing groove 6, the cathode air outlet sealing groove 6 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode air outlet sealing groove 6, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode air outlet sealing groove 6. The boss 17 is located in the middle of the cathode air outlet seal groove 6, that is, the boss 17 is located in the middle of two opposite inner sidewalls of the cathode air outlet seal groove 6, the bottom wall of the cathode air outlet seal groove 6 is perpendicular to the two opposite inner sidewalls, and the height of the boss 17 is less than the height of the two opposite inner sidewalls. By arranging the boss 17, when the cathode manifold sealing strip 22 in the cathode air outlet sealing groove 6 is compressed in the Z direction, the boss 17 can play a role of supporting the cathode manifold sealing strip 22 in the X, Y direction, so that the stability of the cathode manifold sealing strip 22 under stress can be improved, meanwhile, a space is provided for the deformation of the cathode manifold sealing strip 22 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually perpendicular in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the cathode manifold sealing strip 22 is compressed, and the deformation and the breakage of the bipolar plate caused by the change of the cathode manifold sealing strip 22 are avoided.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode manifold sealing strip 22 is disposed in the cathode cooling water inlet sealing groove 5, the cathode cooling water inlet sealing groove 5 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode cooling water inlet sealing groove 5, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode cooling water inlet sealing groove 5. The boss 17 is located at the middle position of the cathode cooling water inlet sealing groove 5, that is, the boss 17 is located at the middle position of two opposite inner side walls of the cathode cooling water inlet sealing groove 5, the bottom wall of the cathode cooling water inlet sealing groove 5 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the cathode manifold sealing strip 22 in the cathode cooling water inlet sealing groove 5 is compressed in the Z direction, the boss 17 can play a role of supporting the cathode manifold sealing strip 22 in the X, Y direction, the stability of the cathode manifold sealing strip 22 under stress can be improved, and meanwhile, a space is provided for the deformation of X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the cathode manifold sealing strip 22 is compressed, so that the deformation and the breakage caused by the change of the cathode manifold sealing strip 22 are avoided.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode manifold sealing strip 22 is disposed in the cathode cooling water outlet sealing groove 8, the cathode cooling water outlet sealing groove 8 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode cooling water outlet sealing groove 8, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode cooling water outlet sealing groove 8. The boss 17 is located at the middle position of the cathode cooling water outlet sealing groove 8, that is, the boss 17 is located at the middle position of two opposite inner side walls of the cathode cooling water outlet sealing groove 8, the bottom wall of the cathode cooling water outlet sealing groove 8 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the cathode manifold sealing strip 22 in the cathode cooling water outlet sealing groove 8 is compressed in the Z direction, the boss 17 can play a role of supporting the cathode manifold sealing strip 22 in the X, Y direction, the stability of the cathode manifold sealing strip 22 under stress can be improved, and meanwhile, a space is provided for the deformation of X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the cathode manifold sealing strip 22 is compressed, so that the deformation and the breakage caused by the change of the cathode manifold sealing strip 22 are avoided.
As shown in fig. 1 and 3, a boss 17 for supporting a cathode flow field sealing strip 21 is disposed in the cathode flow field sealing groove 2, the cathode flow field sealing groove 2 is a rectangular groove, the boss 17 is located on the bottom wall of the cathode flow field sealing groove 2, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the cathode flow field sealing groove 2. The boss 17 is also located in the middle of the cathode flow field sealing groove 2, that is, the boss 17 is located in the middle of two opposite inner sidewalls of the cathode flow field sealing groove 2, the bottom wall of the cathode flow field sealing groove 2 is perpendicular to the two opposite inner sidewalls, and the height of the boss 17 is less than the height of the two opposite inner sidewalls. By arranging the boss 17, when the cathode flow field sealing strip 21 in the cathode flow field sealing groove 2 is compressed in the Z direction, the boss 17 can play a role of supporting the sealing strip in the X, Y direction, so that the stability of the sealing strip under stress can be improved, meanwhile, a space is provided for the deformation of the X, Y direction (the X direction, the Y direction and the Z direction are mutually perpendicular in pairs, the X direction is parallel to the length direction of the cathode plate, the Y direction is parallel to the width direction of the cathode plate, and the Z direction is parallel to the thickness direction of the cathode plate) when the sealing strip is compressed, and the deformation and the rupture of the bipolar plate caused by the change of the sealing strip are avoided.
As shown in fig. 2 and 3, a boss 17 for supporting an anode manifold sealing strip 24 is disposed in the anode hydrogen inlet sealing groove 12, the anode hydrogen inlet sealing groove 12 is a rectangular groove, the boss 17 is located on the bottom wall of the anode hydrogen inlet sealing groove 12, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode hydrogen inlet sealing groove 12. The boss 17 is located in the middle of the anode hydrogen inlet sealing groove 12, that is, the boss 17 is located in the middle of two opposite inner sidewalls of the anode hydrogen inlet sealing groove 12, the bottom wall of the anode hydrogen inlet sealing groove 12 is perpendicular to the two opposite inner sidewalls, and the height of the boss 17 is less than the height of the two opposite inner sidewalls. Through setting up boss 17, when anode manifold sealing strip 24 that is located positive pole hydrogen import seal groove 12 is compressed in Z upwards, boss 17 can play the effect of supporting anode manifold sealing strip 24 in X, Y orientation, can improve anode manifold sealing strip 24 stability under the atress, X, Y direction (X direction, Y direction and Z direction are two liang of mutually perpendicular, the X direction is parallel with the length direction of anode plate, the Y direction is parallel with the width direction of anode plate, the Z direction is parallel with anode plate thickness direction) warp provides the space when anode manifold sealing strip 24 is compressed simultaneously, avoid warping, the fracture because of anode manifold sealing strip 24 changes the deformation that arouses.
As shown in fig. 2 and 3, a boss 17 for supporting an anode manifold sealing strip 24 is disposed in the anode hydrogen outlet sealing groove 15, the anode hydrogen outlet sealing groove 15 is a rectangular groove, the boss 17 is located on the bottom wall of the anode hydrogen outlet sealing groove 15, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode hydrogen outlet sealing groove 15. The boss 17 is located at the middle position of the anode hydrogen outlet sealing groove 15, that is, the boss 17 is located at the middle position of two opposite inner side walls of the anode hydrogen outlet sealing groove 15, the bottom wall of the anode hydrogen outlet sealing groove 15 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is less than the height of the two opposite inner side walls. Through setting up boss 17, when being compressed in the Z direction in the positive pole hydrogen outlet seal groove 15, boss 17 can play the effect of supporting positive pole manifold sealing strip 24 in X, Y orientation, can improve the stability of positive pole manifold sealing strip 24 under the atress, X, Y orientation (X direction, Y direction and Z direction are two liang of mutually perpendicular, the X direction is parallel with the length direction of anode plate, the Y direction is parallel with the width direction of anode plate, the Z direction is parallel with the thickness direction of anode plate) warp provides the space when positive pole manifold sealing strip 24 is compressed, avoid warping, the fracture because of the change of positive pole manifold sealing strip 24 arouses.
As shown in fig. 2 and fig. 3, a boss 17 for supporting an anode manifold sealing strip 24 is disposed in the anode air inlet sealing groove 11, the anode air inlet sealing groove 11 is a rectangular groove, the boss 17 is located on the bottom wall of the anode air inlet sealing groove 11, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode air inlet sealing groove 11. The boss 17 is located at the middle position of the anode air inlet sealing groove 11, that is, the boss 17 is located at the middle position of two opposite inner side walls of the anode air inlet sealing groove 11, the bottom wall of the anode air inlet sealing groove 11 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the anode manifold sealing strip 24 in the anode air inlet sealing groove 11 is compressed in the Z direction, the boss 17 can play a role of supporting the anode manifold sealing strip 24 in the X, Y direction, so that the stability of the anode manifold sealing strip 24 under stress can be improved, meanwhile, a space is provided for the deformation of the anode manifold sealing strip 24 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually perpendicular in pairs, the X direction is parallel to the length direction of the anode plate, the Y direction is parallel to the width direction of the anode plate, and the Z direction is parallel to the thickness direction of the anode plate) when the anode manifold sealing strip 24 is compressed, and the deformation and the breakage caused by the change of the anode manifold sealing strip 24 are avoided.
As shown in fig. 2 and 3, a boss 17 for supporting an anode manifold sealing strip 24 is disposed in the anode air outlet sealing groove 14, the anode air outlet sealing groove 14 is a rectangular groove, the boss 17 is located on the bottom wall of the anode air outlet sealing groove 14, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode air outlet sealing groove 14. The boss 17 is located at the middle position of the anode air outlet sealing groove 14, that is, the boss 17 is located at the middle position of two opposite inner side walls of the anode air outlet sealing groove 14, the bottom wall of the anode air outlet sealing groove 14 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the anode manifold sealing strip 24 positioned in the anode air outlet sealing groove 14 is compressed in the Z direction, the boss 17 can play a role of supporting the anode manifold sealing strip 24 in the X, Y direction, the stability of the anode manifold sealing strip 24 under stress can be improved, meanwhile, a space is provided for deformation of the anode manifold sealing strip 24 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the anode plate, the Y direction is parallel to the width direction of the anode plate, and the Z direction is parallel to the thickness direction of the anode plate) when the anode manifold sealing strip 24 is compressed, and deformation and breakage caused by the change of the anode manifold sealing strip 24 are avoided.
As shown in fig. 2 and 3, a boss 17 for supporting an anode manifold sealing strip 24 is disposed in the anode cooling water inlet sealing groove 13, the anode cooling water inlet sealing groove 13 is a rectangular groove, the boss 17 is located on the bottom wall of the anode cooling water inlet sealing groove 13, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode cooling water inlet sealing groove 13. The boss 17 is located at the middle position of the anode cooling water inlet sealing groove 13, that is, the boss 17 is located at the middle position of two opposite inner side walls of the anode cooling water inlet sealing groove 13, the bottom wall of the anode cooling water inlet sealing groove 13 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the anode manifold sealing strip 24 in the anode cooling water inlet sealing groove 13 is compressed in the Z direction, the boss 17 can play a role of supporting the anode manifold sealing strip 24 in the X, Y direction, so that the stability of the anode manifold sealing strip 24 under stress can be improved, meanwhile, a space is provided for the deformation of the anode manifold sealing strip 24 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually perpendicular in pairs, the X direction is parallel to the length direction of the anode plate, the Y direction is parallel to the width direction of the anode plate, and the Z direction is parallel to the thickness direction of the anode plate) when the anode manifold sealing strip 24 is compressed, and the deformation and the breakage caused by the change of the anode manifold sealing strip 24 are avoided.
As shown in fig. 2 and 3, a boss 17 for supporting an anode manifold sealing strip 24 is disposed in the anode cooling water outlet sealing groove 16, the anode cooling water outlet sealing groove 16 is a rectangular groove, the boss 17 is located on the bottom wall of the anode cooling water outlet sealing groove 16, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode cooling water outlet sealing groove 16. The boss 17 is located at the middle position of the anode cooling water outlet sealing groove 16, that is, the boss 17 is located at the middle position of two opposite inner side walls of the anode cooling water outlet sealing groove 16, the bottom wall of the anode cooling water outlet sealing groove 16 is perpendicular to the two opposite inner side walls, and the height of the boss 17 is smaller than the height of the two opposite inner side walls. By arranging the boss 17, when the anode manifold sealing strip 24 positioned in the anode cooling water outlet sealing groove 16 is compressed in the Z direction, the boss 17 can play a role of supporting the anode manifold sealing strip 24 in the X, Y direction, the stability of the anode manifold sealing strip 24 under stress can be improved, and meanwhile, a space is provided for the deformation of the anode manifold sealing strip 24 in the X, Y direction (the X direction, the Y direction and the Z direction are mutually vertical in pairs, the X direction is parallel to the length direction of the anode plate, the Y direction is parallel to the width direction of the anode plate, and the Z direction is parallel to the thickness direction of the anode plate) when the anode manifold sealing strip 24 is compressed, so that the deformation and the breakage caused by the change of the anode manifold sealing strip 24 are avoided.
As shown in fig. 2 and 3, a boss 17 for supporting an anode flow field sealing strip 23 is disposed in the anode flow field sealing groove 10, the anode flow field sealing groove 10 is a rectangular groove, the boss 17 is located on the bottom wall of the anode flow field sealing groove 10, the height of the boss 17 is 0.2mm, and the height direction of the boss 17 is perpendicular to the bottom wall of the anode flow field sealing groove 10. The boss 17 is also located in the middle of the anode flow field sealing groove 10, that is, the boss 17 is located in the middle of two opposite inner sidewalls of the anode flow field sealing groove 10, the bottom wall of the anode flow field sealing groove 10 is perpendicular to the two opposite inner sidewalls, and the height of the boss 17 is less than the height of the two opposite inner sidewalls. By arranging the boss 17, when the sealing strip in the anode flow field sealing groove 10 is compressed in the Z direction, the boss 17 can play a role of supporting the anode flow field sealing strip 23 in the X, Y direction, so that the stability of the sealing strip under stress can be improved, meanwhile, a space is provided for the deformation of the X, Y direction (the X direction, the Y direction and the Z direction are mutually perpendicular in pairs, the X direction is parallel to the length direction of the anode plate, the Y direction is parallel to the width direction of the anode plate, and the Z direction is parallel to the thickness direction of the anode plate) when the sealing strip is compressed, and the deformation and the rupture of the bipolar plate caused by the change of the sealing strip are avoided.
As shown in fig. 4, the MEA20 is positioned between the cathode and anode plates, the anode flow field seal 23 and the cathode flow field seal 21 are in contact with the MEA20, and the MEA20 is positioned between the anode flow field seal 23 and the cathode flow field seal 21. The anode manifold seal strip 24 and the cathode manifold seal strip 22 are in contact with the MEA20, and the MEA20 is interposed between the anode manifold seal strip 24 and the cathode manifold seal strip 22.
As shown in fig. 6, the other side of the cathode plate opposite to the sealing groove is a pressure-bearing surface of the cathode plate, and the pressure-bearing surface of the cathode plate protrudes a certain height than the top of the cathode flow field rib, and has a size equal to the thickness of the single GDL in compression deformation. Similarly, the other side of the anode plate, which is opposite to the sealing groove, is a pressure bearing surface of the anode plate, the pressure bearing surface of the anode plate protrudes a certain height than the top of the anode flow field rib, and the size of the pressure bearing surface is the thickness of compression deformation of the single GDL. The advantage of doing so is, guaranteed that membrane electrode still is in the flattening state after the safe edge pressure-bearing, avoids producing tensile stress to the proton membrane because of the safe edge deformation, makes its deformation, destruction, finally inefficacy.
As shown in fig. 1, 2, 4 and 5, the positions of the inlet and outlet of each fluid after the bipolar plates are formed by the cathode plate and the anode plate correspond to each other, that is, the cathode hydrogen inlet manifold is opposite to the anode hydrogen inlet manifold, the cathode hydrogen outlet manifold is opposite to the anode hydrogen outlet manifold, the cathode air inlet manifold is opposite to the anode air inlet manifold, the cathode air outlet manifold is opposite to the anode air outlet manifold, the cathode cooling water inlet manifold is opposite to the anode cooling water inlet manifold, and the cathode cooling water outlet manifold is opposite to the anode cooling water outlet manifold. Meanwhile, the cathode hydrogen inlet sealing groove 4 is opposite to the anode hydrogen inlet sealing groove 12, the cathode hydrogen outlet sealing groove 7 is opposite to the anode hydrogen outlet sealing groove 15, the cathode air inlet sealing groove 3 is opposite to the anode air inlet sealing groove 11, the cathode air outlet sealing groove 6 is opposite to the anode air outlet sealing groove 14, the cathode cooling water inlet sealing groove 5 is opposite to the anode cooling water inlet sealing groove 13, and the cathode cooling water outlet sealing groove 8 is opposite to the anode cooling water outlet sealing groove 16.
As shown in fig. 1, 2, 4 and 5, the cathode hydrogen inlet seal groove 4 and the anode hydrogen inlet seal groove 12 are different in size, the area of the region of the cathode manifold seal strip 22 in the cathode hydrogen inlet seal groove 4 in contact with the EMA is larger than the area of the region of the anode manifold seal strip 24 in the anode hydrogen inlet seal groove 12 in contact with the EMA, and the region of the anode manifold seal strip 24 in the anode hydrogen inlet seal groove 12 in contact with the EMA is located within the region of the cathode manifold seal strip 22 in the cathode hydrogen inlet seal groove 4 in contact with the EMA, thereby structurally forming a "return" structure, which can avoid seal failure due to misalignment of the seal strips and improve the sealing performance of the bipolar plate.
As shown in fig. 5, in the present embodiment, the length of the cathode manifold seal strip 22 located in the cathode hydrogen inlet seal groove 4 is greater than the length of the anode manifold seal strip 24 located in the anode hydrogen inlet seal groove 12, with the lengths of the two being parallel. The width of the cathode manifold seal strip 22 in the cathode hydrogen inlet seal groove 4 is greater than the width of the anode manifold seal strip 24 in the anode hydrogen inlet seal groove 12, and the width directions of the two are parallel.
As shown in fig. 1, 2, 4 and 5, the cathode hydrogen outlet seal groove 7 and the anode hydrogen outlet seal groove 15 are different in size, the area of the region of the cathode manifold seal strip 22 in the cathode hydrogen outlet seal groove 7 in contact with the EMA is larger than the area of the region of the anode manifold seal strip 24 in the anode hydrogen outlet seal groove 15 in contact with the EMA, and the region of the anode manifold seal strip 24 in the anode hydrogen outlet seal groove 15 in contact with the EMA is located within the region of the cathode manifold seal strip 22 in the cathode hydrogen outlet seal groove 7 in contact with the EMA, thereby structurally forming a "return" structure, which can avoid seal failure due to misalignment of the seal strips and improve the sealing performance of the bipolar plate.
As shown in fig. 5, in the present embodiment, the length of the cathode manifold seal strip 22 in the cathode hydrogen outlet seal groove 7 is greater than the length of the anode manifold seal strip 24 in the anode hydrogen outlet seal groove 15, with the lengths being parallel. The width of the cathode manifold seal strip 22 in the cathode hydrogen outlet seal groove 7 is greater than the width of the anode manifold seal strip 24 in the anode hydrogen outlet seal groove 15, and the width directions of the two are parallel.
As shown in fig. 1, 2, 4 and 5, the cathode air inlet seal groove 3 and the anode air inlet seal groove 11 are different in size, the area of the region of the cathode manifold seal strip 22 in the cathode air inlet seal groove 3, which is in contact with the EMA, is larger than the area of the region of the anode manifold seal strip 24 in the anode air inlet seal groove 11, which is in contact with the EMA, and the region of the anode manifold seal strip 24 in the anode air inlet seal groove 11, which is in contact with the EMA, is located within the region of the cathode manifold seal strip 22 in the cathode air inlet seal groove 3, which is in contact with the EMA, so that a "return" structure is structurally formed, thereby preventing seal failure caused by seal strip misalignment and improving the sealing performance of the bipolar plate.
As shown in fig. 5, in the present embodiment, the length of the cathode manifold seal strip 22 in the cathode air inlet seal groove 3 is greater than the length of the anode manifold seal strip 24 in the anode air inlet seal groove 11, with the lengths parallel. The width of the cathode manifold seal strip 22 in the cathode air inlet seal groove 3 is greater than the width of the anode manifold seal strip 24 in the anode air inlet seal groove 11, the width directions of which are parallel.
As shown in fig. 1, 2, 4 and 5, the cathode air outlet seal groove 6 and the anode air outlet seal groove 14 are different in size, the area of the region of the cathode manifold seal strip 22 in the cathode air outlet seal groove 6 in contact with the EMA is larger than the area of the region of the anode manifold seal strip 24 in the anode air outlet seal groove 14 in contact with the EMA, and the region of the anode manifold seal strip 24 in the anode air outlet seal groove 14 in contact with the EMA is located within the region of the cathode manifold seal strip 22 in the cathode air outlet seal groove 6 in contact with the EMA, so that a "return" structure is formed in the structure, thereby preventing seal failure caused by seal strip dislocation and improving the sealing performance of the bipolar plate.
As shown in fig. 5, in this embodiment, the length of the cathode manifold seal strip 22 in the cathode air outlet seal slot 6 is greater than the length of the anode manifold seal strip 24 in the anode air outlet seal slot 14, with the lengths parallel. The width of the cathode manifold seal strip 22 in the cathode air outlet seal slot 6 is greater than the width of the anode manifold seal strip 24 in the anode air outlet seal slot 14, with the widths parallel.
As shown in fig. 1, 2, 4 and 5, the cathode cooling water inlet seal groove 5 and the anode cooling water inlet seal groove 13 are different in size, the area of the region of the cathode manifold seal strip 22 in the cathode cooling water inlet seal groove 5, which is in contact with the EMA, is larger than the area of the region of the anode manifold seal strip 24 in the anode cooling water inlet seal groove 13, which is in contact with the EMA, and the region of the anode manifold seal strip 24 in the anode cooling water inlet seal groove 13, which is in contact with the EMA, is located within the region of the cathode manifold seal strip 22 in the cathode cooling water inlet seal groove 5, which is in contact with the EMA, so that a "loop" structure is formed structurally, thereby preventing seal failure due to misalignment of the seal strips and improving the sealing performance of the bipolar plate.
As shown in fig. 5, in the present embodiment, the length of the cathode manifold seal strip 22 located in the cathode cooling water inlet seal groove 5 is greater than the length of the anode manifold seal strip 24 located in the anode cooling water inlet seal groove 13, with the length directions of the two being parallel. The width of the cathode manifold seal strip 22 in the cathode cooling water inlet seal groove 5 is greater than the width of the anode manifold seal strip 24 in the anode cooling water inlet seal groove 13, and the width directions of the two are parallel.
As shown in fig. 1, 2, 4 and 5, the cathode cooling water outlet seal groove 8 and the anode cooling water outlet seal groove 16 are different in size, the area of the region of the cathode manifold seal strip 22 in the cathode cooling water outlet seal groove 8 in contact with the EMA is larger than the area of the region of the anode manifold seal strip 24 in the anode cooling water outlet seal groove 16 in contact with the EMA, and the region of the anode manifold seal strip 24 in the anode cooling water outlet seal groove 16 in contact with the EMA is located within the region of the cathode manifold seal strip 22 in the cathode cooling water outlet seal groove 8 in contact with the EMA, thereby forming a "loop" structure in structure, avoiding seal failure due to misalignment of the seal strips, and improving the sealing performance of the bipolar plate.
As shown in fig. 5, in the present embodiment, the length of the cathode manifold seal strip 22 located in the cathode cooling water outlet seal groove 8 is greater than the length of the anode manifold seal strip 24 located in the anode cooling water outlet seal groove 16, with the length directions of the two being parallel. The width of the cathode manifold seal strip 22 in the cathode cooling water outlet seal groove 8 is greater than the width of the anode manifold seal strip 24 in the anode cooling water outlet seal groove 16, and the width directions of the two are parallel.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.

Claims (8)

1. Be applicable to point and glue shaping bipolar plate seal groove structure, its characterized in that: the device comprises a cathode hydrogen inlet sealing groove arranged at a cathode hydrogen inlet manifold of a cathode plate, a cathode hydrogen outlet sealing groove arranged at a cathode hydrogen outlet manifold of the cathode plate, a cathode air inlet sealing groove arranged at a cathode air inlet manifold of the cathode plate, a cathode air outlet sealing groove arranged at a cathode air outlet manifold of the cathode plate, a cathode cooling water inlet sealing groove arranged at a cathode cooling water inlet manifold of the cathode plate, a cathode cooling water outlet sealing groove arranged at a cathode cooling water outlet manifold of the cathode plate, a cathode flow field sealing groove arranged at a flow field area of the cathode plate, an anode hydrogen inlet sealing groove arranged at an anode hydrogen inlet manifold of the anode plate, an anode hydrogen outlet sealing groove arranged at an anode hydrogen outlet manifold of the anode plate, an anode air inlet sealing groove arranged at an anode air inlet manifold of the anode plate, an anode cooling water inlet sealing groove arranged at an anode cooling water inlet manifold of the anode plate, an anode cooling water outlet sealing groove arranged at an anode cooling water outlet manifold of the anode plate and an anode flow field area arranged at the flow field area of the anode flow field;
a cathode flow field sealing strip is arranged in the cathode flow field sealing groove, a cathode hydrogen inlet sealing groove, a cathode air outlet sealing groove and a cathode cooling water inlet sealing groove are internally provided with a cathode manifold sealing strip, the cathode hydrogen inlet sealing groove, the cathode air outlet sealing groove and the cathode cooling water inlet sealing groove are positioned on one side of the cathode flow field sealing groove, the cathode cooling water inlet sealing groove is positioned between the cathode hydrogen inlet sealing groove and the cathode air outlet sealing groove, the cathode hydrogen outlet sealing groove, the cathode air inlet sealing groove and the cathode cooling water outlet sealing groove are internally provided with the cathode manifold sealing strip, the cathode hydrogen outlet sealing groove, the cathode air inlet sealing groove and the cathode cooling water outlet sealing groove are positioned on the other side of the cathode flow field sealing groove, and the cathode air inlet sealing groove is positioned between the cathode hydrogen outlet sealing groove and the cathode air inlet sealing groove;
an anode flow field sealing strip is arranged in the anode flow field sealing groove, an anode hydrogen inlet sealing groove, an anode air outlet sealing groove and an anode cooling water inlet sealing groove are internally provided with an anode manifold sealing strip, the anode hydrogen inlet sealing groove, the anode air outlet sealing groove and the anode cooling water inlet sealing groove are positioned on one side of the anode flow field sealing groove, the anode cooling water inlet sealing groove is positioned between the anode hydrogen inlet sealing groove and the anode air outlet sealing groove, the anode hydrogen outlet sealing groove, the anode air inlet sealing groove and the anode cooling water outlet sealing groove are internally provided with the anode manifold sealing strip, the anode hydrogen outlet sealing groove, the anode air inlet sealing groove and the anode cooling water outlet sealing groove are positioned on the other side of the anode flow field sealing groove, and the anode air inlet sealing groove is positioned between the anode hydrogen outlet sealing groove and the anode air inlet sealing groove;
a boss for supporting a cathode manifold sealing strip is arranged in the cathode hydrogen inlet sealing groove, the cathode hydrogen inlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode hydrogen inlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode hydrogen inlet sealing groove; the boss is positioned in the middle of the cathode hydrogen inlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode hydrogen inlet sealing groove, the bottom wall of the cathode hydrogen inlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode manifold sealing strip positioned in the cathode hydrogen inlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the cathode manifold sealing strip in the X, Y direction, so that the stability of the cathode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the cathode manifold sealing strip is compressed;
a boss for supporting a cathode manifold sealing strip is arranged in the cathode hydrogen outlet sealing groove, the cathode hydrogen outlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode hydrogen outlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode hydrogen outlet sealing groove; the boss is positioned in the middle of the cathode hydrogen outlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode hydrogen outlet sealing groove, the bottom wall of the cathode hydrogen outlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode manifold sealing strip positioned in the cathode hydrogen outlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the cathode manifold sealing strip in the X, Y direction, so that the stability of the cathode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the cathode manifold sealing strip is compressed;
a boss for supporting a cathode manifold sealing strip is arranged in the cathode air inlet sealing groove, the cathode air inlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode air inlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode air inlet sealing groove; the boss is positioned in the middle of the cathode air inlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode air inlet sealing groove, the bottom wall of the cathode air inlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode manifold sealing strip positioned in the cathode air inlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the cathode manifold sealing strip in the X, Y direction, so that the stability of the cathode manifold sealing strip under stress is improved, and meanwhile, a space is provided for the X, Y direction deformation when the cathode manifold sealing strip is compressed;
a boss for supporting a cathode manifold sealing strip is arranged in the cathode air outlet sealing groove, the cathode air outlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode air outlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode air outlet sealing groove; the boss is positioned in the middle of the cathode air outlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode air outlet sealing groove, the bottom wall of the cathode air outlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode manifold sealing strip positioned in the cathode air outlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the cathode manifold sealing strip in the X, Y direction, so that the stability of the cathode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the cathode manifold sealing strip is compressed;
a boss for supporting a cathode manifold sealing strip is arranged in the cathode cooling water inlet sealing groove, the cathode cooling water inlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode cooling water inlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode cooling water inlet sealing groove; the boss is positioned in the middle of the cathode cooling water inlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode cooling water inlet sealing groove, the bottom wall of the cathode cooling water inlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode manifold sealing strip positioned in the cathode cooling water inlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the cathode manifold sealing strip in the X, Y direction, so that the stability of the cathode manifold sealing strip under stress is improved, and meanwhile, a space is provided for the X, Y direction deformation when the cathode manifold sealing strip is compressed;
a boss for supporting a cathode manifold sealing strip is arranged in the cathode cooling water outlet sealing groove, the cathode cooling water outlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode cooling water outlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode cooling water outlet sealing groove; the boss is positioned in the middle of the cathode cooling water outlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode cooling water outlet sealing groove, the bottom wall of the cathode cooling water outlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode manifold sealing strip positioned in the cathode cooling water outlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the cathode manifold sealing strip in the X, Y direction, so that the stability of the cathode manifold sealing strip under stress is improved, and meanwhile, a space is provided for the X, Y direction deformation when the cathode manifold sealing strip is compressed;
a boss for supporting a cathode flow field sealing strip is arranged in the cathode flow field sealing groove, the cathode flow field sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the cathode flow field sealing groove, and the height direction of the boss is vertical to the bottom wall of the cathode flow field sealing groove; the boss is positioned in the middle of the cathode flow field sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the cathode flow field sealing groove, the bottom wall of the cathode flow field sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the cathode flow field sealing strip positioned in the cathode flow field sealing groove is compressed in the Z direction, the boss plays a role of supporting the sealing strip in the X, Y direction, so that the stability of the sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the sealing strip is compressed;
a boss for supporting the anode manifold sealing strip is arranged in the anode hydrogen inlet sealing groove, the anode hydrogen inlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode hydrogen inlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode hydrogen inlet sealing groove; the boss is positioned in the middle of the anode hydrogen inlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode hydrogen inlet sealing groove, the bottom wall of the anode hydrogen inlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the anode manifold sealing strip positioned in the anode hydrogen inlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode manifold sealing strip in the X, Y direction, so that the stability of the anode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the anode manifold sealing strip is compressed;
a boss for supporting the anode manifold sealing strip is arranged in the anode hydrogen outlet sealing groove, the anode hydrogen outlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode hydrogen outlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode hydrogen outlet sealing groove; the boss is positioned in the middle of the anode hydrogen outlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode hydrogen outlet sealing groove, the bottom wall of the anode hydrogen outlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the anode manifold sealing strip positioned in the anode hydrogen outlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode manifold sealing strip in the X, Y direction, so that the stability of the anode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the anode manifold sealing strip is compressed;
a boss for supporting an anode manifold sealing strip is arranged in the anode air inlet sealing groove, the anode air inlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode air inlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode air inlet sealing groove; the boss is positioned in the middle of the anode air inlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode air inlet sealing groove, the bottom wall of the anode air inlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the anode manifold sealing strip positioned in the anode air inlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode manifold sealing strip in the X, Y direction, so that the stability of the anode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the anode manifold sealing strip is compressed;
a boss for supporting an anode manifold sealing strip is arranged in the anode air outlet sealing groove, the anode air outlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode air outlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode air outlet sealing groove; the boss is positioned in the middle of the anode air outlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode air outlet sealing groove, the bottom wall of the anode air outlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the anode manifold sealing strip positioned in the anode air outlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode manifold sealing strip in the X, Y direction, so that the stability of the anode manifold sealing strip under stress is improved, and meanwhile, a space is provided for the X, Y direction deformation when the anode manifold sealing strip is compressed;
a boss for supporting the anode manifold sealing strip is arranged in the anode cooling water inlet sealing groove, the anode cooling water inlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode cooling water inlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode cooling water inlet sealing groove; the boss is positioned in the middle of the anode cooling water inlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode cooling water inlet sealing groove, the bottom wall of the anode cooling water inlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is smaller than the height of the two opposite inner side walls; by arranging the boss, when the anode manifold sealing strip positioned in the anode cooling water inlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode manifold sealing strip in the X, Y direction, so that the stability of the anode manifold sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the anode manifold sealing strip is compressed;
a boss for supporting the anode manifold sealing strip is arranged in the anode cooling water outlet sealing groove, the anode cooling water outlet sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode cooling water outlet sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode cooling water outlet sealing groove; the boss is positioned in the middle of the anode cooling water outlet sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode cooling water outlet sealing groove, the bottom wall of the anode cooling water outlet sealing groove is vertical to the two opposite inner side walls, and the height of the boss is less than the height of the two opposite inner side walls; by arranging the boss, when the anode manifold sealing strip positioned in the anode cooling water outlet sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode manifold sealing strip in the X, Y direction, so that the stability of the anode manifold sealing strip under stress is improved, meanwhile, a space is provided for X, Y direction deformation when the anode manifold sealing strip is compressed, and the deformation and the breakage of a bipolar plate caused by the change of the anode manifold sealing strip are avoided;
a boss for supporting an anode flow field sealing strip is arranged in the anode flow field sealing groove, the anode flow field sealing groove is a rectangular groove, the boss is positioned on the bottom wall of the anode flow field sealing groove, and the height direction of the boss is vertical to the bottom wall of the anode flow field sealing groove; the boss is positioned in the middle of the anode flow field sealing groove, namely the boss is positioned in the middle of two opposite inner side walls of the anode flow field sealing groove, the bottom wall of the anode flow field sealing groove is vertical to the two opposite inner side walls, and the height of the boss is less than that of the two opposite inner side walls; by arranging the boss, when the sealing strip positioned in the anode flow field sealing groove is compressed in the Z direction, the boss plays a role of supporting the anode flow field sealing strip in the X, Y direction, so that the stability of the sealing strip under stress is improved, and meanwhile, a space is provided for X, Y direction deformation when the sealing strip is compressed;
the MEA is positioned between the cathode plate and the anode plate, the anode flow field sealing strip and the cathode flow field sealing strip are contacted with the MEA, and the MEA is positioned between the anode flow field sealing strip and the cathode flow field sealing strip; the anode manifold sealing strip and the cathode manifold sealing strip are in contact with the MEA, and the MEA is positioned between the anode manifold sealing strip and the cathode manifold sealing strip;
the other side of the negative plate, which is opposite to the sealing groove, is a pressure-bearing surface of the negative plate, the pressure-bearing surface of the negative plate protrudes a certain height than the top of the cathode flow field rib, and the size of the pressure-bearing surface is the thickness of compression deformation of the single GDL; the other side of the anode plate, which is opposite to the sealing groove, is a pressure bearing surface of the anode plate, the pressure bearing surface of the anode plate protrudes a certain height than the top of the anode flow field rib, and the size of the pressure bearing surface is the thickness of compression deformation of the single GDL;
after the bipolar plate is formed by the cathode plate and the anode plate, the positions of the inlet and the outlet of each fluid are mutually corresponding, namely, a cathode hydrogen inlet manifold is opposite to an anode hydrogen inlet manifold, a cathode hydrogen outlet manifold is opposite to an anode hydrogen outlet manifold, a cathode air inlet manifold is opposite to an anode air inlet manifold, a cathode air outlet manifold is opposite to an anode air outlet manifold, a cathode cooling water inlet manifold is opposite to an anode cooling water inlet manifold, and a cathode cooling water outlet manifold is opposite to an anode cooling water outlet manifold; the cathode hydrogen inlet sealing groove is opposite to the anode hydrogen inlet sealing groove, the cathode hydrogen outlet sealing groove is opposite to the anode hydrogen outlet sealing groove, the cathode air inlet sealing groove is opposite to the anode air inlet sealing groove, the cathode air outlet sealing groove is opposite to the anode air outlet sealing groove, the cathode cooling water inlet sealing groove is opposite to the anode cooling water inlet sealing groove, and the cathode cooling water outlet sealing groove is opposite to the anode cooling water outlet sealing groove;
the cathode hydrogen inlet sealing groove and the anode hydrogen inlet sealing groove are different in size, the area of the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode hydrogen inlet sealing groove is larger than the area of the region, in contact with the MEA, of the anode manifold sealing strip in the anode hydrogen inlet sealing groove, and the region, in contact with the MEA, of the anode manifold sealing strip in the anode hydrogen inlet sealing groove is located in the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode hydrogen inlet sealing groove, so that a 'returning' shaped structure is formed structurally;
the cathode hydrogen outlet sealing groove and the anode hydrogen outlet sealing groove are different in size, the area of the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode hydrogen outlet sealing groove is larger than the area of the region, in contact with the MEA, of the anode manifold sealing strip in the anode hydrogen outlet sealing groove, and the region, in contact with the MEA, of the anode manifold sealing strip in the anode hydrogen outlet sealing groove is located in the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode hydrogen outlet sealing groove, so that a 'returning' structure is formed structurally;
the cathode air inlet sealing groove and the anode air inlet sealing groove are different in size, the area of the area, in contact with the MEA, of the cathode manifold sealing strip in the cathode air inlet sealing groove is larger than the area of the area, in contact with the MEA, of the anode manifold sealing strip in the anode air inlet sealing groove, and the area, in contact with the MEA, of the anode manifold sealing strip in the anode air inlet sealing groove is located in the area, in contact with the MEA, of the cathode manifold sealing strip in the cathode air inlet sealing groove, so that a 'returning' structure is formed in the structure;
the cathode air outlet sealing groove and the anode air outlet sealing groove are different in size, the area of the area, in contact with the MEA, of the cathode manifold sealing strip in the cathode air outlet sealing groove is larger than the area of the area, in contact with the MEA, of the anode manifold sealing strip in the anode air outlet sealing groove, and the area, in contact with the MEA, of the anode manifold sealing strip in the anode air outlet sealing groove is located in the area, in contact with the MEA, of the cathode manifold sealing strip in the cathode air outlet sealing groove, so that a 'returning' structure is formed structurally;
the cathode cooling water inlet sealing groove and the anode cooling water inlet sealing groove are different in size, the area of the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode cooling water inlet sealing groove is larger than the area of the region, in contact with the MEA, of the anode manifold sealing strip in the anode cooling water inlet sealing groove, and the region, in contact with the MEA, of the anode manifold sealing strip in the anode cooling water inlet sealing groove is located in the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode cooling water inlet sealing groove, so that a 'returning' structure is formed in the structure;
the cathode cooling water outlet sealing groove and the anode cooling water outlet sealing groove are different in size, the area of the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode cooling water outlet sealing groove is larger than the area of the region, in contact with the MEA, of the anode manifold sealing strip in the anode cooling water outlet sealing groove, and the region, in contact with the MEA, of the anode manifold sealing strip in the anode cooling water outlet sealing groove is located in the region, in contact with the MEA, of the cathode manifold sealing strip in the cathode cooling water outlet sealing groove, so that a 'returning' structure is formed structurally;
the X direction, the Y direction and the Z direction are mutually perpendicular in pairs, the X direction is respectively parallel to the length direction of the cathode plate or the anode plate, the Y direction is respectively parallel to the width direction of the cathode plate or the anode plate, and the Z direction is respectively parallel to the thickness direction of the cathode plate or the anode plate.
2. The seal groove structure of bipolar plate suitable for spot-gluing molding according to claim 1, wherein: the height of boss is 0.2mm.
3. The seal groove structure of bipolar plate suitable for spot-gluing molding according to claim 1, wherein: the length of the cathode manifold sealing strip in the cathode hydrogen inlet sealing groove is greater than that of the anode manifold sealing strip in the anode hydrogen inlet sealing groove, and the length directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel; the width of the cathode manifold sealing strip in the cathode hydrogen inlet sealing groove is larger than that of the anode manifold sealing strip in the anode hydrogen inlet sealing groove, and the width directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel.
4. The seal groove structure of bipolar plate suitable for spot-gluing molding according to claim 1, wherein: the length of the cathode manifold sealing strip in the cathode hydrogen outlet sealing groove is greater than that of the anode manifold sealing strip in the anode hydrogen outlet sealing groove, and the length directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel; the width of the cathode manifold sealing strip in the cathode hydrogen outlet sealing groove is larger than that of the anode manifold sealing strip in the anode hydrogen outlet sealing groove, and the width directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel.
5. The bipolar plate sealing groove structure suitable for spot-gluing molding according to claim 1, wherein: the length of the cathode manifold sealing strip in the cathode air inlet sealing groove is greater than that of the anode manifold sealing strip in the anode air inlet sealing groove, and the length directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel; the width of the cathode manifold sealing strip in the cathode air inlet sealing groove is larger than that of the anode manifold sealing strip in the anode air inlet sealing groove, and the width directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel.
6. The seal groove structure of bipolar plate suitable for spot-gluing molding according to claim 1, wherein: the length of the cathode manifold sealing strip in the cathode air outlet sealing groove is greater than that of the anode manifold sealing strip in the anode air outlet sealing groove, and the length directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel; the width of the cathode manifold sealing strip in the cathode air outlet sealing groove is larger than that of the anode manifold sealing strip in the anode air outlet sealing groove, and the width directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel.
7. The seal groove structure of bipolar plate suitable for spot-gluing molding according to claim 1, wherein: the length of the cathode manifold sealing strip in the cathode cooling water inlet sealing groove is greater than that of the anode manifold sealing strip in the anode cooling water inlet sealing groove, and the length directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel; the width of the cathode manifold sealing strip in the cathode cooling water inlet sealing groove is larger than that of the anode manifold sealing strip in the anode cooling water inlet sealing groove, and the width directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel.
8. The seal groove structure of bipolar plate suitable for spot-gluing molding according to claim 1, wherein: the length of the cathode manifold sealing strip in the cathode cooling water outlet sealing groove is greater than that of the anode manifold sealing strip in the anode cooling water outlet sealing groove, and the length directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel; the width of the cathode manifold sealing strip in the cathode cooling water outlet sealing groove is larger than that of the anode manifold sealing strip in the anode cooling water outlet sealing groove, and the width directions of the cathode manifold sealing strip and the anode manifold sealing strip are parallel.
CN202210141025.8A 2022-02-16 2022-02-16 Be applicable to point and glue shaping bipolar plate seal groove structure Active CN114512691B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210141025.8A CN114512691B (en) 2022-02-16 2022-02-16 Be applicable to point and glue shaping bipolar plate seal groove structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210141025.8A CN114512691B (en) 2022-02-16 2022-02-16 Be applicable to point and glue shaping bipolar plate seal groove structure

Publications (2)

Publication Number Publication Date
CN114512691A CN114512691A (en) 2022-05-17
CN114512691B true CN114512691B (en) 2023-04-07

Family

ID=81551960

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210141025.8A Active CN114512691B (en) 2022-02-16 2022-02-16 Be applicable to point and glue shaping bipolar plate seal groove structure

Country Status (1)

Country Link
CN (1) CN114512691B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116666684B (en) * 2023-08-01 2023-12-08 山东美燃氢动力有限公司 Sealing structure of self-humidifying fuel cell and manufacturing method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302996A3 (en) * 2001-10-16 2006-04-19 Matsushita Electric Industrial Co., Ltd. Polymer electrolyte fuel cell
JP2016095902A (en) * 2014-11-12 2016-05-26 パナソニックＩｐマネジメント株式会社 Fuel battery and manufacturing method for the same
JP2016139529A (en) * 2015-01-28 2016-08-04 パナソニックＩｐマネジメント株式会社 Fuel cell
CN105186015A (en) * 2015-07-17 2015-12-23 江苏绿遥燃料电池系统制造有限公司 Bridging type metal bipolar plate
JP6950614B2 (en) * 2018-04-18 2021-10-13 トヨタ自動車株式会社 Fuel cell and fuel cell manufacturing method
CN110224152B (en) * 2019-05-30 2020-10-13 山东潍氢动力科技有限公司 Fuel cell with double-sealing groove metal bipolar plate and silicon injection membrane electrode structure
CN210443621U (en) * 2019-07-31 2020-05-01 上海佑戈金属科技有限公司 Metal matrix bipolar plate
CN210837959U (en) * 2019-11-21 2020-06-23 安特(苏州)精密机械有限公司 Glue injection structure for one-step injection molding of metal bipolar plate sealant
CN112002922A (en) * 2020-08-28 2020-11-27 浙江海晫新能源科技有限公司 Sealing structure of fuel cell stack

Also Published As

Publication number Publication date
CN114512691A (en) 2022-05-17

Similar Documents

Publication Publication Date Title
CN101499532B (en) Metal bead seal for fuel cell plate
CN101557002A (en) Seal member for proton exchange membrane fuel cell plate
CN114512691B (en) Be applicable to point and glue shaping bipolar plate seal groove structure
KR101601382B1 (en) Metal separator for fuel cell stack
WO2008017251A1 (en) Sealing structure of fuel cell and methode for manufacturing the same
CN213026205U (en) Sealed cross-sectional structure that glues of bipolar plate
CN113745563B (en) Bipolar plate assembly, manufacturing process thereof, electric pile and fuel cell vehicle
CN110667048A (en) Fuel cell seal forming device
CN101752576A (en) Using ionomer to militate against membrane buckling in the tenting region
KR101491377B1 (en) fuel cell
CN112038661A (en) Integrated quick-assembly fuel cell sealing structure
CN218975482U (en) Solid oxide fuel cell stack
CN112310433A (en) Sealing structure of fuel cell and assembly method of fuel cell stack
CN110828851A (en) Triple-seal water channel bipolar plate and preparation method thereof
CN217405476U (en) Self-sealing structure sealing ring for fuel cell
CN111755713A (en) Convex ridge type fuel cell bipolar plate sealing structure
CN213845335U (en) A sealed location auxiliary structure for sealing positioning seal groove and seal part
KR101740252B1 (en) Molten carbonate fuel cell stack and manifold combined structure by manifold insulation sealing guide pin formed on fuel cell stack
CN114023992A (en) Integrated membrane electrode frame sealing structure with double-sided glue injection
CN209183651U (en) Fuel cell separator part, individual fuel cells, fuel cell pile and pole plate
CN211515056U (en) Membrane frame for preparing proton exchange membrane of fuel cell
CN113013436A (en) Metal bipolar plate structure capable of being sealed firstly and then welded and assembling method thereof
CN112002922A (en) Sealing structure of fuel cell stack
CN117039091B (en) Tower-shaped SOFC (solid oxide Fuel cell) stack module
CN211295267U (en) Bipolar plate for fuel cell

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant