CN207441862U - A kind of bipolar plates and fuel cell - Google Patents

A kind of bipolar plates and fuel cell Download PDF

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Publication number
CN207441862U
CN207441862U CN201721323459.0U CN201721323459U CN207441862U CN 207441862 U CN207441862 U CN 207441862U CN 201721323459 U CN201721323459 U CN 201721323459U CN 207441862 U CN207441862 U CN 207441862U
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China
Prior art keywords
bipolar plates
doab
flow field
runner
zone
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Expired - Fee Related
Application number
CN201721323459.0U
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Chinese (zh)
Inventor
李鹏敏
方芳
刘敏胜
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BEIJING IN-POWER NEW ENERGY CO LTD
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ENN Science and Technology Development Co Ltd
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Priority to CN201721323459.0U priority Critical patent/CN207441862U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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Abstract

The utility model is related to field of fuel cell technology more particularly to a kind of bipolar plates and fuel cells.The pressure drop of runner can be controlled in certain scope, avoid the occurrence of water logging phenomenon, and the air flow method in reaction zone can be made more uniform, the performance and stability of fuel cell can be effectively improved.A kind of bipolar plates, including:Bipolar plates body, the working media flow field being arranged on the bipolar plates body, the working media flow field include reaction zone and are arranged on the shunting zone of the reaction zone entrance side and are arranged on the doab of the reaction zone outlet side;Wherein, the reaction zone is parallel flow field, the runner extended in a first direction including several, the shunting zone and the doab include at least two sub- circulating areas with the corresponding connection of runner of identical item number respectively, and the sum of area of sub- circulating area of each correspondence shunting zone with the flow passage of identical item number and the doab is equal.

Description

A kind of bipolar plates and fuel cell
Technical field
The utility model is related to field of fuel cell technology more particularly to a kind of bipolar plates and fuel cells.
Background technology
Important composition component of the bipolar plates as fuel cell mainly serves for ensuring reactant uniform transmission and will generate Product discharge in time, and during the reaction realize electronics transmission.It can be in bipolar plate surfaces shape by certain processing technology Into groove of different shapes, it is referred to as flow field, the passage that this flow field can be discharged as reactant uniform transmission and product.Well Flow Field Design can effectively improve the performance of fuel cell, improve stability and the service life of fuel cell.
At present, the flow field structure of bipolar plates mainly has serpentine flow and parallel flow field etc. in fuel cell.For area compared with For big bipolar plates, serpentine flow path is longer due to runner so that reacting gas concentration distributional difference is larger before and after passage, reaction It is uneven, meanwhile, runner is long also to cause the pressure drop on runner direction larger, cause outlet pressure small, be unfavorable for reacting The discharge of product liquid water, and then water logging phenomenon is susceptible to, influence the performance of battery.And although parallel flow field pressure drop is smaller, But being still susceptible to the non-uniform phenomenon of distribution of air flow, i.e., gas flow is big in the passage of inlet, away from entrance Side gas flow is small so that reaction is not enough, and is influenced the performance and stability of fuel cell, and then is influenced the service life of pile.
Utility model content
The embodiment of the utility model provides a kind of bipolar plates and fuel cell, can control the pressure drop of runner certain In the range of, water logging phenomenon is avoided the occurrence of, and the air flow method in reaction zone can be made more uniform, fuel electricity can be effectively improved The performance and stability in pond.
In order to achieve the above objectives, on the one hand, the utility model embodiment provides a kind of bipolar plates, including:
Bipolar plates body, the working media flow field being arranged on the bipolar plates body, the working media flow field include It reaction zone and is arranged on and the shunting zone of the reaction zone entrance side and is arranged on the doab of the reaction zone outlet side;
Wherein, the reaction zone be parallel flow field, including the runner that several are extended in a first direction, the shunting zone and The doab includes at least two and the sub- circulating areas of the corresponding connection of runner of identical item number respectively, each with identical item The sum of the correspondence shunting zone of several flow passages and the area of sub- circulating area of the doab are equal.
Optionally, the structure reverse symmetry of the shunting zone and the doab set, and the entrance of the shunting zone and The doab outlet be located at at the border flush position of the reaction zone, the border of the reaction zone refers to the reaction Area is perpendicular to the marginal position of the extending direction of the runner.
Optionally, each sub- circulating area of the shunting zone and the doab is corresponding at least two runners respectively Connection.
Optionally, the entrance of the shunting zone and the exit normal of the doab are set in the extending direction of the runner It puts.
Optionally, the entrance opening dimension of each sub- circulating area of the shunting zone is equal;Correspondingly, the doab The outlet size of each sub- circulating area is equal.
Optionally, the shunting zone and the doab are rectangular configuration, sector structure or triangular structure.
Optionally, runner described in each is through-type runner or wave line style runner.
Optionally, two surfaces up and down of the bipolar plates body are equipped with the working media flow field.
Optionally, the working media flow field on one of surface in two surfaces up and down of the bipolar plates body is anti- Gas flowfield is answered, the working media flow field on another surface is coolant flow field;Wherein, the reaction gas for anodic gas and One of which in cathode gas;Alternatively,
The working media flow field on one of surface in two surfaces up and down of the substrate is anode gas flow field, separately The working media flow field on one surface is cathode gas flow fields.
On the other hand, the utility model embodiment provides a kind of fuel cell, including:At least two bipolar plates, Yi Jishe The membrane electrode between two adjacent bipolar plates is put, wherein, at least one bipolar plates are bipolar plates as described above.
The utility model embodiment provides a kind of bipolar plates, by the way that reaction zone is provided parallel to flow field, with serpentine flow It compares, the pressure drop of reaction zone can be controlled in certain scope, avoid the occurrence of water logging phenomenon, meanwhile, by described anti- It answers the entrance side in area and outlet side that shunting zone and doab are set respectively, and the shunting zone and the doab is set respectively For at least two and the sub- circulating area of the corresponding connection of runner of identical item number, in operation of fuel cells, air-flow can be through institute The each sub- circulating area for stating shunting zone is allocated, and electrochemical reaction occurs into the parallel flow field of reaction zone, after reaction Residual gas stream and product enter doab each sub- circulating area converge and through doab outlet discharge, in this process In, due to the sum of the area of sub- circulating area of each correspondence shunting zone with the flow passage of identical item number and doab phase Deng therefore, it is possible to make the air flow rate by each sub- circulating area distribution into each runner of reaction zone of shunting zone basic It is identical, so as to improve the uniformity coefficient of distribution of air flow, fuel cell current Density Distribution is improved, fuel can be effectively improved The performance and stability of battery.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structure diagram for bipolar plates that the utility model embodiment provides;
Fig. 2 is the structure diagram for another bipolar plates that the utility model embodiment provides;
Fig. 3 is the structure diagram for another bipolar plates that the utility model embodiment provides;
Fig. 4 is the structure diagram for another bipolar plates that the utility model embodiment provides;
Fig. 5 is a kind of sub- circulating area for connection corresponding at least two runners that the utility model embodiment provides Structure diagram;
Fig. 6 is a kind of structure diagram for single channel that the utility model embodiment provides;
Fig. 7 is the structure diagram for another single channel that the utility model embodiment provides;
Fig. 8 is a kind of structure diagram for fuel cell that the utility model embodiment provides.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained shall fall within the protection scope of the present invention.
In the description of the utility model, it is to be understood that term " " center ", " on ", " under ", "front", "rear", The orientation or position relationship of the instructions such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on attached drawing institutes The orientation or position relationship shown is for only for ease of description the utility model and simplifies description rather than instruction or imply signified Device or component must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that this practicality New limitation.
Term " first ", " second " be only used for description purpose, and it is not intended that instruction or imply relative importance or The implicit quantity for indicating indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply Ground includes one or more this feature.In the description of the utility model, unless otherwise indicated, " multiple " are meant that two It is a or more than two.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally Connection;It can be directly connected, can also be indirectly connected by intermediary, can be the connection inside two elements.For For those of ordinary skill in the art, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
On the one hand, the utility model embodiment provides a kind of bipolar plates, referring to Fig. 1, including:
Bipolar plates body 1, the working media flow field 2 being arranged on the bipolar plates body 1, the working media flow field 2 Including reaction zone A and it is arranged on and the shunting zone B of the reaction zone A entrance sides and is arranged on the remittance of the reaction zone A outlet sides Flow area C;
Wherein, the reaction zone A is parallel flow field, including the runner 21 that several are extended in a first direction, the shunting The area B and doab C includes at least two sub- circulating area (shuntings with the 21 corresponding connection of runner of identical item number respectively The sub- circulating area of area B is denoted as 22,23) the sub- circulating area of doab C is denoted as, each connection of runner 21 with identical item number The sum of the area of sub- circulating area (22 and 23) of corresponding shunting zone B and doab C is equal.
Wherein, if the sub- circulating area 22 of correspondence shunting zone B and correspondence doab C that connect with the runner 21 of identical item number The number of sub- circulating area 23 be respectively i, as shown in Figure 1, by the correspondence shunting zone B's connected with the runner 21 of identical item number The area of sub- circulating area 22 is denoted as S1, S2, S3 respectively ... Si, correspondingly, will corresponding doab C sub- circulating area 23 face Integration is not denoted as S1 ', S2 ', S3 ' ... Si ', so, the correspondence shunting zone of each connection of runner 21 with identical item number and The sum of area of sub- circulating area of doab C is respectively S1+S1 ', S2+S2 ', S3+S3 ' ... Si+Si ', equal to a constant.
The utility model embodiment provides a kind of bipolar plates, by the way that reaction zone A is provided parallel to flow field, with serpentine flow It compares, the pressure drop of reaction zone A can be controlled in certain scope, avoid the occurrence of water logging phenomenon, meanwhile, by described anti- Answer the entrance side of area A and outlet side that shunting zone B and doab C are set respectively, and by the shunting zone B and doab C points At least two sub- circulating areas with the 21 corresponding connection of runner of identical item number, in operation of fuel cells, gas are not arranged to Stream can be allocated through each sub- circulating area 22 of the shunting zone B, and electrochemistry occurs into the parallel flow field of reaction zone A Reaction, each sub- circulating area 23 that residual gas stream and product after reaction enter doab C converges and going out through doab C Mouth discharge, in the process, due to the subflow of each correspondence shunting zone B connected with the runner 21 of identical item number and doab C The sum of the area of logical region (22 and 23) is equal, therefore, it is possible to which each sub- circulating area 22 by shunting zone B is made to distribute into anti- The air flow rate for answering each runner 21 of area A is essentially identical, so as to improve the uniformity coefficient of distribution of air flow, improves fuel Cell current density is distributed, and can effectively improve the performance and stability of fuel cell.
Wherein, the air-flow can be gas or liquid, you can with for anodic gas, or cathode gas, also It can be cooling agent.
In one embodiment of the utility model, referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the shunting zone B and the doab C Structure set compared with the reaction zone A reverse symmetries, and the outlet point of the entrance of the shunting zone B and the doab C Not Wei Yu at the border flush position of the reaction zone A, the border of the reaction zone A refers to the reaction zone A perpendicular to institute State the marginal position of the extending direction of runner 21.
In the utility model embodiment, by by the structure of the shunting zone B and the doab C compared with described anti- Area's A reverse symmetries is answered to set, when air-flow enters each runner 21 of reaction zone A by each sub- circulating area 22 of shunting zone B, The flow resistance that can make the air-flow in each sub- circulating area is basically identical so that into each runner 21 flow more Adjunction is near, can further improve the uniformity coefficient of distribution of air flow;Meanwhile by by the entrance of the shunting zone B and doab C Outlet be arranged on at the border flush position of the reaction zone A, each subflow of the shunting zone B and the doab C Logical region can extend in a second direction to be connected with each runner 21, and second direction refers to the entrance and institute by the shunting zone B The direction where the outlet line of doab C is stated, so, each sub- circulating area can be arranged to approximately along second party To the runner of extension, the runner for avoiding sub- circulating area to extend along multiple directions causes the larger situation of air-flow flow resistance Occur, and each sub- circulating area is arranged to the runner substantially extended in a second direction, air-flow can be made to lead in each subflow Smooth outflow in region reduces the flow resistance of air-flow.
Wherein, each sub- circulating area of the shunting zone B and doab C can be the folding extended in a second direction Curved runner, or the arced flow path extended in a second direction can also be the through-type runner extended in a second direction.
Illustratively, referring to Fig. 2, when each sub- circulating area of the shunting zone B and doab C is along second party To extension bending-type runner when, the shunting zone B and the doab C can be rectangular configuration;Referring to Fig. 3, when described point Stream the area B and doab C each sub- circulating area be extend in a second direction arced flow path when, the shunting zone B and The doab C can be sector structure;Referring to Fig. 4, when each sub- circulating area of the shunting zone B and doab C For extend in a second direction through-type runner when, the shunting zone B and the doab C can be triangular structure.
In the another embodiment of the utility model, referring to Fig. 5, each subflow of the shunting zone B and the doab C are led to Region respectively at least two 21 corresponding connections of runner.So, each height of the shunting zone B and the doab C The port size of runner 21 corresponding to circulating area is larger, can effectively reduce stream when air-flow flows into and out runner 2 Dynamic resistance so as to reduce the pressure difference between 21 entrance of runner, is conducive to the transmission of air-flow and the stabilization of fuel cell Operation.
Wherein, the setting direction of the outlet of the entrance to the shunting zone B and the doab C does not limit.
In one preferred embodiment of the utility model, referring to Fig. 3 and Fig. 4, the entrance of the shunting zone B and the doab The exit normal of C is set in the extending direction of the runner 21.So, the shunting zone B can be increased to the full extent With the area of the doab C, shunting and confluence effect are improved.
In one embodiment of the utility model, referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, each sub- Circulation Area of the shunting zone B The entrance opening dimension in domain 22 is equal;Correspondingly, the outlet size of each sub- circulating area 23 of the doab C is equal.
In the utility model embodiment, by by the entrance opening dimension phase of each sub- circulating area 22 of the shunting zone B Deng, and the outlet size of each sub- circulating area 23 of the doab C is equal, and each runner 21 with identical item number connects The sum of the area of sub- circulating area of logical correspondence the shunting zone B and the doab C is equal, can make reaction gas or Cooling agent is essentially identical into the flow in each runner 21 by each sub- circulating area of shunting zone, ensure that the distribution of air-flow High evenness improves the electric current distribution of fuel cell, can improve the performance of fuel cell.
In the another embodiment of the utility model, runner 21 described in each for through-type runner (as shown in Figure 6) or Wave line style runner (as shown in Figure 7).
Since the bipolar plates body 1 has two surfaces being oppositely arranged, the bipolar plates body 1 can be in a table The working media flow field 2 on face is set, the working media flow field 2 can also be respectively provided on both surfaces.Preferably, institute Two surfaces up and down for stating bipolar plates body 1 are equipped with the working media flow field 2.
In one embodiment of the utility model, one of surface in two surfaces up and down of the bipolar plates body 1 Working media flow field 2 for reactant gas flow field, the working media flow field 2 on another surface is coolant flow field;Wherein, it is described Reaction gas is the one of which in anodic gas and cathode gas;Alternatively,
The working media flow field 2 on one of surface in two surfaces up and down of the bipolar plates body 1 is anode gas Body flow field, the working media flow field 2 on another surface is cathode gas flow fields.
It so, can be by the bipolar plates according to the difference in flow field when the bipolar plates are applied to fuel cell It assembles, to generate electricity.
On the other hand, the utility model embodiment provides a kind of fuel cell, referring to Fig. 8, including:At least two bipolar plates 01 and the membrane electrode 02 that is arranged between two adjacent bipolar plates 01, wherein, at least one bipolar plates 01 are as described above Bipolar plates.
The utility model embodiment provides a kind of fuel cell, using bipolar plates as described above, since the bipolar plates will Reaction zone is provided parallel to flow field, compared with serpentine flow, can control in certain scope the pressure drop of reaction zone, avoid There is water logging phenomenon, meanwhile, by setting shunting zone and doab respectively in the entrance side and outlet side of the reaction zone, and will The shunting zone and the doab are respectively set at least two sub- Circulation Areas with the corresponding connection of runner of identical item number Domain, in operation of fuel cells, air-flow can be allocated through each sub- circulating area of the shunting zone, into the flat of reaction zone Electrochemical reaction occurs in row flow field, each sub- circulating area that the residual gas stream and product after reaction enter doab converges And the outlet discharge through doab, in the process, due to each shunting zone and doab with the flow passage of identical item number The sum of the area of sub- circulating area it is equal, therefore so that air-flow enters reaction zone by each sub- circulating area of shunting zone The flow of each runner is essentially identical, can improve the uniformity coefficient of distribution of air flow, improves fuel cell current Density Distribution, So as to effectively improve the performance of fuel cell and stability.
Wherein, since the fuel cell includes cathode plate and anode plate, when the cathode plate and the anode plate select During with bipolar plates as described above, referring to Fig. 8, the operation principle of fuel cell is as follows:Anodic gas stream on the anode plate For circulating hydrogen, the cathode gas flow fields on the cathode plate are for ventilating air or oxygen, so, in fuel electricity When pond works, oxidation reaction occurs in membrane electrode under the catalysis of catalyst for hydrogen, generates hydrogen ion (H+) and electronics (e-), hydrogen Ion (H+) cathode plate reached by membrane electrode 02, the oxygen on cathode plate issues raw reduction reaction in catalyst action, generates Negative oxygen ion, negative oxygen ion and hydrogen ion (H+) generation water is combined, the water of generation is discharged with unreacted air or oxygen, The electronics that hydrogen gas side generates reaches cathode plate by external circuit, as electronics (e-) pass sequentially through anode plate and external circuit flows to cathode Electric current is generated during plate.
The above is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to In this, in the technical scope that any one skilled in the art discloses in the utility model, variation can be readily occurred in Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power Subject to the protection domain of profit requirement.

Claims (10)

1. a kind of bipolar plates, which is characterized in that including:
Bipolar plates body, the working media flow field being arranged on the bipolar plates body, the working media flow field include reaction It area and is arranged on and the shunting zone of the reaction zone entrance side and is arranged on the doab of the reaction zone outlet side;
Wherein, the reaction zone is parallel flow field, including the runner that several are extended in a first direction, the shunting zone and described Doab includes at least two and the sub- circulating areas of the corresponding connection of runner of identical item number respectively, each with identical item number The sum of the correspondence shunting zone of flow passage and the area of sub- circulating area of the doab are equal.
2. bipolar plates according to claim 1, which is characterized in that
The structure of the shunting zone and the doab sets compared with the reaction zone reverse symmetry, and the shunting zone enters Mouthful and the doab outlet be located at described at the border flush position of the reaction zone, the border of the reaction zone refers to Reaction zone is perpendicular to the marginal position of the extending direction of the runner.
3. bipolar plates according to claim 1, which is characterized in that
The connection corresponding at least two runners respectively of each sub- circulating area of the shunting zone and the doab.
4. bipolar plates according to claim 1 or 2, which is characterized in that
The entrance of the shunting zone and the exit normal of the doab are set in the extending direction of the runner.
5. bipolar plates according to claim 1 or 2, which is characterized in that
The entrance opening dimension of each sub- circulating area of the shunting zone is equal;Correspondingly, each subflow of the doab is led to The outlet size in region is equal.
6. bipolar plates according to claim 1 or 2, which is characterized in that
The shunting zone and the doab are rectangular configuration, sector structure or triangular structure.
7. bipolar plates according to claim 1, which is characterized in that
Runner described in each is through-type runner or wave line style runner.
8. bipolar plates according to claim 1, which is characterized in that
Two surfaces up and down of the bipolar plates body are equipped with the working media flow field.
9. bipolar plates according to claim 8, which is characterized in that
The working media flow field on one of surface in two surfaces up and down of the bipolar plates body is reactant gas flow field, The working media flow field on another surface is coolant flow field;Wherein, the reaction gas is in anodic gas and cathode gas One of which;Alternatively,
The working media flow field on one of surface in two surfaces up and down of the bipolar plates body is anode gas flow field, The working media flow field on another surface is cathode gas flow fields.
10. a kind of fuel cell, which is characterized in that including:At least two bipolar plates and it is arranged on two adjacent bipolar plates Between membrane electrode, wherein, at least one bipolar plates are such as claim 1-9 any one of them bipolar plates.
CN201721323459.0U 2017-10-13 2017-10-13 A kind of bipolar plates and fuel cell Expired - Fee Related CN207441862U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110010921A (en) * 2019-04-03 2019-07-12 武汉科技大学 A kind of variable cross-section fuel cell flow field board
CN111029611A (en) * 2019-12-09 2020-04-17 中国第一汽车股份有限公司 Flow field plate and fuel cell
CN112666462A (en) * 2020-12-16 2021-04-16 上海电气集团股份有限公司 Method and device for evaluating PEMFC performance
CN114094134A (en) * 2021-10-08 2022-02-25 东风汽车集团股份有限公司 Bipolar plate and fuel cell
CN114220986A (en) * 2022-02-21 2022-03-22 潍坊力德电储科技有限公司 Electric pile structure, flow battery temperature regulating system and control method thereof
CN114759208A (en) * 2022-05-09 2022-07-15 中国第一汽车股份有限公司 Fuel cell bipolar plate and fuel cell with same
CN115528263A (en) * 2022-10-18 2022-12-27 中国科学院青岛生物能源与过程研究所 Rectangular polar plate for high-power electrolytic cell

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110010921A (en) * 2019-04-03 2019-07-12 武汉科技大学 A kind of variable cross-section fuel cell flow field board
CN111029611A (en) * 2019-12-09 2020-04-17 中国第一汽车股份有限公司 Flow field plate and fuel cell
CN112666462A (en) * 2020-12-16 2021-04-16 上海电气集团股份有限公司 Method and device for evaluating PEMFC performance
CN114094134A (en) * 2021-10-08 2022-02-25 东风汽车集团股份有限公司 Bipolar plate and fuel cell
CN114094134B (en) * 2021-10-08 2023-07-25 东风汽车集团股份有限公司 Bipolar plate and fuel cell
CN114220986A (en) * 2022-02-21 2022-03-22 潍坊力德电储科技有限公司 Electric pile structure, flow battery temperature regulating system and control method thereof
CN114759208A (en) * 2022-05-09 2022-07-15 中国第一汽车股份有限公司 Fuel cell bipolar plate and fuel cell with same
CN114759208B (en) * 2022-05-09 2024-03-19 中国第一汽车股份有限公司 Fuel cell bipolar plate and fuel cell with same
CN115528263A (en) * 2022-10-18 2022-12-27 中国科学院青岛生物能源与过程研究所 Rectangular polar plate for high-power electrolytic cell

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Granted publication date: 20180601

Termination date: 20211013