CN113471466B - Fuel cell - Google Patents
Fuel cell Download PDFInfo
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- CN113471466B CN113471466B CN202110681069.5A CN202110681069A CN113471466B CN 113471466 B CN113471466 B CN 113471466B CN 202110681069 A CN202110681069 A CN 202110681069A CN 113471466 B CN113471466 B CN 113471466B
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- cooling water
- inlet
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- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 239000001257 hydrogen Substances 0.000 claims abstract description 86
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 86
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000000498 cooling water Substances 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 abstract description 14
- 230000006872 improvement Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000008429 bread Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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 belongs to the technical field of fuel cells, and solves the problem of energy loss of the broken line walking of a runner in the prior art. The fuel cell comprises a hydrogen flat plate and an empty water plate, wherein the empty water plate comprises a reaction surface and a cooling surface, the cooling surface comprises a cooling water inlet arranged at the top of the cooling surface and a cooling water outlet arranged at the bottom, a cooling water flow field which is vertically and linearly distributed is arranged between the cooling water inlet and the cooling water outlet, a gas inlet and a gas outlet are arranged on the side part, and a gas gap bridge channel is arranged between the cooling water flow field and the gas outlet as well as between the cooling water flow field and the gas inlet. The cooling water is in the vertical straight line distribution's trend in the cooling surface, and the gas flow channel of the same vertical trend of cooperation original improvement contacts more fully, has better cooling rate and cooling efficiency, reduces temperature and resistance that produces. The reaction surface and the cooling surface of the empty water plate are the front and the back of the same part of the central area, one surface contacted with the proton exchange membrane is the reaction surface, and the other surface is the cooling surface, so that heat generated by the reaction is transferred to cooling water.
Description
Technical Field
The invention belongs to the field of fuel cells, and particularly relates to a fuel cell with a novel structure.
Background
The catalyst/proton exchange membrane assembly prepared by coating the fuel cell catalyst on both sides of the proton exchange membrane is abbreviated as CCM (catalyst coated membrane). CCM is the most central component of the membrane electrode (MEA, membrane Electrode Assemblies) because the entire electrochemical reaction of the fuel cell is completed thereon. The function is equivalent to a computer chip, and thus CCM is also called a fuel cell chip. In the prior art, the MEA structure is formed by coating catalysts on two sides of a proton exchange membrane to form a CCM, and then combining the gas diffusion layers to two sides of the CCM in a hot pressing mode to form the MEA. In operation, hydrogen and air are pressurized from both sides of the MEA, and the gas is diffused into the catalytic layer through the micropores of the gas diffusion layer to react. The bipolar plates play an important role in collecting current, separating fuel and oxidant, transferring heat, supporting the stack, and the like in the stack. The graphite bipolar plate has the advantages of good electric and heat conducting properties, low resistance, strong corrosion resistance, suitability for batch processing and the like, and is widely applied to proton exchange membrane fuel cells. When the proton exchange membrane fuel cell which is in the central position for providing energy is operated, a large amount of heat is generated in the electrochemical reaction process of the cell, and if the heat cannot be timely dispersed, the stability of the performance of a galvanic pile is easily affected.
The invention patent with publication number CN111883796A discloses a graphite bipolar plate and proton exchange membrane fuel cell, which comprises two graphite unit plates, wherein each graphite unit plate comprises an end plate and a flow field plate which are arranged in a stacking way, so that a plurality of water bath flow passages which are transversely and parallelly spaced are defined at the stacking position of the two unit plates, and each water bath flow passage comprises two transverse sections which are vertically spaced and a vertical section which is connected with the two transverse sections; one of the two graphite unit plates is a cathode plate, and the other is an anode plate. In the invention, a water bath runner is arranged between the end plate and the flow field plate, so that the reaction between the flow field plate and the membrane electrode is not disturbed, namely the operation of the galvanic pile is not influenced; the water bath runner is arranged to be communicated in a Z shape through the two transverse sections and the vertical section, the water flow is increased in the limited plate surface, the flow resistance is reduced, the smooth circulation of deionized water is promoted to be beneficial to heat exchange, and the battery is conveniently subjected to water thermal management, so that the electric pile continuously operates at a proper temperature, and the stability of the electric pile is improved.
In the prior art, the gas flow channel and the liquid flow channel are required to be folded and walked between the gaps of the bipolar plates, so that the resistance and the loss of the cell stack are unintentionally increased under the condition of being beneficial to heat dissipation.
Disclosure of Invention
The present invention aims to solve the above problems in the prior art and provides a fuel cell with a vertical overall flow.
The aim of the invention can be achieved by the following technical scheme: a fuel cell comprising a stack and a housing, characterized in that: the cell stack contain the reaction plate, the reaction plate contain hydrogen flat board and empty water board, empty water board contain reaction face and cooling surface, the cooling surface including set up in the cooling water import at cooling surface top and set up in the cooling water export of cooling surface bottom, be equipped with the cooling water flow field of vertical straight line distribution between cooling water import and the export, cooling surface lateral part be equipped with gas inlet and gas outlet, cooling water flow field and gas outlet and gas inlet between all be equipped with the gas passageway of crossing the bridge. The cooling water is in the vertical straight line distribution's trend in the cooling surface, and the gas flow channel of the same vertical trend of cooperation original improvement contacts more fully, has better cooling rate and cooling efficiency, reduces temperature and resistance that produces. The reaction surface and the cooling surface of the empty water plate are the front and the back of the same part of the central area, one surface contacted with the proton exchange membrane is the reaction surface, and the other surface is the cooling surface, so that heat generated by the reaction is transferred to cooling water.
In the fuel cell, the reaction plate is also provided with a graphite side flow field. The channels of cooling water and gas are pressed into the reaction plate through the graphite strips with the cut required shapes and are bonded and fixed.
In the fuel cell described above, the stack further includes a side plate including a hydrogen plate side plate and an empty water plate side plate. The side polar plates are arranged at two ends and aim at sealing fluid channels, and the hydrogen flat plate side polar plates and the empty water plate side polar plates are respectively corresponding to the sealing of the hydrogen flat plate and the sealing of the empty water plate, so that each fluid in the fuel cell stack is provided with only one flow channel, the remaining channels which are possibly leaked can be sealed by the side polar plates, the stable circulation of various flow channels in the fuel cell stack is kept, and the channels are not interfered with each other.
In the above fuel cell, the hydrogen plate side plate includes a hydrogen gas inlet air outlet termination end plate. The hydrogen inlet air outlet end panel is further divided into a hydrogen inlet channel end surface and an air outlet channel end surface, the two surfaces are respectively used for terminating the inlet of hydrogen and the outlet of air, a hydrogen bridge passage is further arranged between the hydrogen inlet channel end surface and the central area of the side polar plate, the hydrogen with relatively high flow speed can be buffered by utilizing the hydrogen bridge passage through the central area, and the area of the air outlet channel end surface is about twice that of the hydrogen inlet channel end surface. In the hydrogen flat plate side polar plate, the other side opposite to the hydrogen outlet air inlet end plate is provided with a hydrogen outlet channel and an air inlet channel, and a hydrogen bridge channel is arranged between the hydrogen outlet channel and the central area, and the area of the air inlet channel is about twice the area of the hydrogen outlet.
In the above fuel cell, the air water plate side plate comprises a hydrogen outlet air inlet termination end plate. The hydrogen outlet air inlet termination end bread is further divided into a hydrogen outlet channel termination surface and an air inlet channel termination surface, wherein the two surfaces are respectively used for terminating the outlet of hydrogen and the inlet of air; and the other side of the air water plate side polar plate opposite to the hydrogen outlet air inlet end face plate is provided with a hydrogen inlet channel and an air outlet channel, the area of the air outlet channel is about twice the area of the hydrogen inlet channel, and the area of the air inlet channel end face is about twice the area of the hydrogen outlet channel end face. There is no reaction zone in the middle and thus no bridging channel.
In the above fuel cell, the housing includes a tie rod. The pull rod is used for tensioning, supporting and sealing the battery pieces, the single battery pieces are gathered into a battery stack, and the battery can be assisted to return to the original state more quickly after the heated expansion volume of the battery is enlarged and cooled, so that the performance of the battery is prevented from being influenced.
In the fuel cell, the pull rod comprises a middle pull rod and side pull rods, wherein the middle pull rod is used for pulling the cell piece in a close mode, and the side pull rods have the functions of tensioning, supporting and sealing.
In the above fuel cell, the tie rod further comprises a side tie rod for tightening, side positioning and fixing.
In the above fuel cell, the housing further includes a single-mode detection module. The single-mode detection module comprises a mounting plate and a patrol line, and further comprises a connecting plate, wherein the connecting plate is used for connecting the mounting plate with the patrol line with the fuel cell stack, the patrol line is arranged to directly penetrate through the connecting plate, the patrol line can be connected with a monitoring module of the fuel cell stack, then the voltage of each single cell is monitored in real time, the mounting is convenient, the connection stability is high, and the monitoring is easy and accurate.
In the above-described fuel cell, the housing is provided with a cushion in the direction in which the cell stack is stacked. The buffer cushion comprises a spring for buffering expansion caused by thermal expansion and cold contraction of the battery, and deformation caused by deformation of the battery due to the fact that the elasticity of the shell is lacked is avoided, so that the performance of the battery is influenced.
Compared with the prior art, the invention improves the flow passage of fluid in the bipolar plate, improves the Z-shaped flow passage into a straight flow passage, has more sufficient contact, better cooling speed and cooling efficiency and reduces the generated temperature and resistance; the sealing ring and the side polar plate are arranged to ensure the tightness of the interior of the cell stack; the buffer cushion is arranged, so that a space for buffering the expansion caused by heat and the contraction caused by cold of the battery can be reserved, and the pull rod in the shell can be used for helping the battery stack to shrink quickly after cooling, so that the influence on the performance of the battery is reduced to the minimum.
Drawings
FIG. 1 is a schematic view of the housing structure of the present invention;
FIG. 2 is a schematic view of the structure of a cell stack of the present invention;
FIG. 3 is a schematic view of two reaction plates of the hydrogen plate and the blank plate of the present invention;
FIG. 4 is a schematic view of the back side, i.e., cooling surface, of the blank water plate of the present invention;
FIG. 5 is a schematic view of the structure of the hydrogen flat plate side plate of the present invention;
fig. 6 is a schematic structural view of the blank water plate side plate of the present invention.
In the figure, 1, a cell stack; 2. a housing; 3. a reaction plate; 31. a hydrogen plate; 32. an empty water plate; 321. a reaction surface; 322. a cooling surface; 3221. a cooling water inlet; 3222. a cooling water outlet; 3223. a cooling water flow field; 3224. a gas inlet; 3225. a gas outlet; 3226. a gas bridge passage; 4. a side plate; 41. a hydrogen plate side plate; 411. a hydrogen inlet air outlet terminating end panel; 42. an empty water plate side polar plate; 421. a hydrogen outlet air inlet terminating end panel; 5. a pull rod; 51. a middle pull rod; 52. a side pull rod; 53. a side pull rod; 6. a single-mode detection module; 7. and a cushion pad.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Specific embodiments are shown in fig. 1-6: a fuel cell comprising a cell stack 1 and a casing 2, characterized in that: the cell stack 1 comprises a reaction plate 3, the reaction plate 3 comprises a hydrogen flat plate 31 and an empty water plate 32, the empty water plate 32 comprises a reaction surface 321 and a cooling surface 322, the cooling surface 322 comprises a cooling water inlet 3221 arranged at the top of the cooling surface 322 and a cooling water outlet 3222 arranged at the bottom of the cooling surface 322, a cooling water flow field 3223 which is vertically and linearly distributed is arranged between the cooling water inlet 3221 and the outlet, a gas inlet 3224 and a gas outlet 3225 are arranged on the side of the cooling surface 322, and a gas gap bridge channel 3226 is arranged between the cooling water flow field 3223 and the gas outlet 3225 as well as between the cooling water flow field 3224. The cooling water is in vertical straight line distribution in the cooling surface 322, and the gas flow passage with the same vertical trend is matched with the original improvement, so that the contact is more sufficient, the cooling speed and the cooling efficiency are better, and the generated temperature and resistance are reduced. The reaction surface 321 and the cooling surface 322 of the empty water plate 32 are the front and back surfaces of the same part of the central area, the surface contacting with the proton exchange membrane is the reaction surface 321, and the other surface is the cooling surface 322, and the heat generated by the reaction is transferred to the cooling water.
The reaction plate 3 is also provided with a graphite side flow field. The channels of cooling water and gas are pressed into the reaction plate 3 by the graphite strips of the cut required shape and are bonded and fixed.
In the above fuel cell, the cell stack 1 further includes a side plate 4, and the side plate 4 includes a hydrogen flat plate side plate 41 and an empty water plate side plate 42. The side plates 4 are disposed at two ends for sealing the fluid channels, and the hydrogen flat plate side plates 41 and the empty water plate side plates 42 are disposed corresponding to the sealing of the hydrogen flat plate 31 and the sealing of the empty water plate 32 respectively, so that each fluid in the fuel cell stack 1 has only one flow channel, and the remaining channels which may leak are sealed by the side plates 4, so that the stable circulation of various flow channels in the fuel cell stack 1 is maintained, and the stable circulation of the various flow channels cannot interfere with each other.
As shown in fig. 5: the hydrogen plate side plate 41 includes a hydrogen gas inlet air outlet termination end plate 411. The hydrogen inlet air outlet end panel 411 is further divided into a hydrogen inlet channel end surface and an air outlet channel end surface, the two surfaces are respectively used for terminating the inlet of hydrogen and the outlet of air, a hydrogen bridge channel is further arranged between the hydrogen inlet channel end surface and the central area of the side polar plate 4, the hydrogen with relatively high flow speed can be buffered by utilizing the hydrogen bridge channel, and the area of the air outlet channel end surface is about twice that of the hydrogen inlet channel end surface. In the hydrogen flat plate side plate 41, the other side opposite to the hydrogen outlet air inlet end plate 421 is a hydrogen outlet channel and an air inlet channel, and a hydrogen bridge channel is arranged between the hydrogen outlet channel and the central area, and the area of the air inlet channel is about twice the area of the hydrogen outlet.
As shown in fig. 6: the blank-side plate 42 includes a hydrogen outlet air inlet termination end plate 421. The hydrogen outlet air inlet termination end bread is further divided into a hydrogen outlet channel termination surface and an air inlet channel termination surface, wherein the two surfaces are respectively used for terminating the outlet of hydrogen and the inlet of air; on the opposite side of the blank-side plate 42 from the hydrogen-outlet air-inlet end plate 421, there are provided a hydrogen-inlet channel and an air-outlet channel, the area of the air-outlet channel being about twice the area of the hydrogen-inlet channel, and the area of the air-inlet-channel end surface being about twice the area of the hydrogen-outlet-channel end surface. There is no reaction zone in the middle and thus no bridging channel.
As shown in fig. 1, the housing 2 includes a pull rod 5. The pull rod 5 is used for tensioning, supporting and sealing the battery pieces, and gathering the single battery pieces into the battery stack 1, and can assist the battery to return to the original state more quickly after the heated expansion volume of the battery becomes larger and cooled so as to avoid influencing the battery performance. The pull rod 5 comprises a middle pull rod 515 and side pull rods 525, wherein the middle pull rod 515 is used for pulling the battery piece in a near mode, and the side pull rods 525 have the functions of tensioning, supporting and sealing. The tension rod 5 further comprises a side tension rod 535, the side tension rod 535 being used for tightening, side positioning and fixing. The housing 2 further comprises a single-mode detection module 6. The single-mode detection module 6 contains the mounting panel and patrols and examines the line, still contains the connecting plate, and the connecting plate is used for being connected with the mounting panel that has the line of patrolling and examining with fuel cell stack 1, through setting up the line of patrolling and examining into direct the running through connecting plate, the line of patrolling and examining can be connected with the monitoring module of fuel cell stack 1, then the voltage of each single cell of real-time supervision, simple to operate, and connection stability is strong, and the monitoring is easy and accurate. The case 2 is provided with a cushion 7 in the direction in which the cell stacks 1 are stacked. The cushion pad 7 comprises a spring for buffering expansion caused by thermal expansion and contraction of the battery, and avoiding deformation caused by deformation of the battery due to lack of elasticity of the shell, thereby affecting the performance of the battery.
The working process of the fuel cell is as follows: the hydrogen enters the interior of the cell stack 1 from one end of the hydrogen flat plate side electrode plate 41 from the outside, the other end of the hydrogen flat plate side electrode plate 41 is provided with a hydrogen inlet and air outlet end plate 411 to prevent the hydrogen from flowing out of the hydrogen flat plate side electrode plate 41, the air and cooling water enter the interior of the cell stack 1 from one end of the air flat plate side electrode plate 42 from the outside, and the other side of the air flat plate side electrode plate 42 is provided with a hydrogen outlet and air inlet end plate 421 to prevent the air and cooling water from flowing out; after the hydrogen and the air flow into the interior, the hydrogen and the air flow through each reaction plate 3 to react in the reaction surface 321 of each reaction plate 3 close to the proton exchange membrane, meanwhile, the cooling water flows through the cooling surface 322 of each empty water plate 32, enters from the cooling water inlet 3221 at the upper side of the cooling surface 322, flows through the cooling water flow field 3223, fully absorbs the heat of the reaction area at the back and then flows out from the cooling water outlet 3222, meanwhile, the air and the hydrogen flow into the cooling surface 322 through the gas inlet 3224, and the heat is transferred to the cooling water through the gas channel 3226 and flows out from the gas outlet 3225; the hydrogen after the reaction flows out from the hydrogen outlet of the empty water plate side electrode plate 42, the air after the reaction flows out from the air outlet of the hydrogen plate side electrode plate 41, and the cooling water also flows out from the cooling water outlet 3222 of the hydrogen plate side electrode plate 41. And (5) finishing the reaction flow.
The mounting process of the cell stack 1 is as follows: the outer part of the cell stack 1 is provided with a shell 2, after the reaction plates 3 are stacked, two side plates 4 of a hydrogen plate side plate 41 and a water plate side plate 42 are added, the middle pull rod 515 is used for proper drawing, the side pull rods 525 are used for tensioning and sealing, the supporting function is also achieved, and the side pull rods 535 are used for fixing the single-mode detection module 6 to the side part of the cell stack 1. And (5) finishing the installation. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention.
Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. A fuel cell comprising a stack (1) and a casing (2), characterized in that: the cell stack (1) comprises a reaction plate (3), the reaction plate (3) comprises a hydrogen flat plate (31) and an empty water plate (32), the empty water plate (32) comprises a reaction surface (321) and a cooling surface (322), the cooling surface (322) comprises a cooling water inlet (3221) arranged at the top of the cooling surface (322) and a cooling water outlet (3222) arranged at the bottom of the cooling surface (322), a cooling water flow field (3223) which is vertically and linearly distributed is arranged between the cooling water inlet (3221) and the cooling water outlet (3222), a gas inlet (3224) and a gas outlet (3225) are arranged on the side part of the cooling surface (322), and a gas bridge passage (3226) is arranged between the cooling water flow field (3223) and the gas outlet (3225) and the gas inlet (3224);
the cell stack (1) further comprises a side polar plate (4), wherein the side polar plate (4) comprises a hydrogen flat plate side polar plate (41) and an empty water plate side polar plate (42);
the hydrogen flat plate side polar plate (41) comprises a hydrogen inlet and an air outlet end plate (411); the hydrogen inlet air outlet end panel (411) is further divided into a hydrogen inlet channel end surface and an air outlet channel end surface, the two surfaces are respectively used for terminating the inlet of hydrogen and the outlet of air, a hydrogen bridge passage is further arranged between the hydrogen inlet channel end surface and the central area of the side polar plate (4), the hydrogen with relatively high flow speed can be buffered by utilizing the hydrogen bridge passage through the central area, and the area of the air outlet channel end surface is twice that of the hydrogen inlet channel end surface.
2. The fuel cell according to claim 1, characterized in that: and the reaction plate (3) is also provided with a graphite side flow field.
3. The fuel cell according to claim 1, characterized in that: the blank-water plate side plate (42) comprises a hydrogen outlet air inlet termination end plate (421).
4. The fuel cell according to claim 1, characterized in that: the shell (2) comprises a pull rod (5).
5. The fuel cell according to claim 4, wherein: the pull rod (5) comprises a middle pull rod (51) and side pull rods (52), the middle pull rod (51) is used for pulling the battery piece in a near mode, and the side pull rods (52) have tensioning, supporting and sealing functions.
6. The fuel cell according to claim 4, wherein: the pull rod (5) also comprises a side pull rod (53), and the side pull rod (53) is used for tensioning, side positioning and fixing.
7. The fuel cell according to claim 1, characterized in that: the shell (2) also comprises a single-mode detection module (6).
8. The fuel cell according to claim 1, characterized in that: the housing (2) is provided with a cushion pad (7) in the stacking direction of the cell stack (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681069.5A CN113471466B (en) | 2021-06-18 | 2021-06-18 | Fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681069.5A CN113471466B (en) | 2021-06-18 | 2021-06-18 | Fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113471466A CN113471466A (en) | 2021-10-01 |
| CN113471466B true CN113471466B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110681069.5A Active CN113471466B (en) | 2021-06-18 | 2021-06-18 | Fuel cell |
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| Country | Link |
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| CN (1) | CN113471466B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20050094573A (en) * | 2004-03-23 | 2005-09-28 | 한국과학기술연구원 | Separator for fuel cell using the metal coated with tin, method to prepare thereit, and polymer electrolyte membrane fuel cell comprising the same |
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| CN216084965U (en) * | 2021-06-18 | 2022-03-18 | 浙江氢谷智能装备科技有限公司 | Fuel cell |
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| DE102011013618A1 (en) * | 2011-03-11 | 2012-09-13 | Li-Tec Battery Gmbh | Energy storage device |
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| CN113571724A (en) * | 2021-06-18 | 2021-10-29 | 浙江嘉杰汽车设计有限公司 | Graphite bipolar plate |
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