CN113113637B - Manifold for a parallel arrangement of dual stack fuel cells and dual stack fuel cell - Google Patents
Manifold for a parallel arrangement of dual stack fuel cells and dual stack fuel cell Download PDFInfo
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- CN113113637B CN113113637B CN202010030951.9A CN202010030951A CN113113637B CN 113113637 B CN113113637 B CN 113113637B CN 202010030951 A CN202010030951 A CN 202010030951A CN 113113637 B CN113113637 B CN 113113637B
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
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- 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
Abstract
The invention provides a manifold for double-stack fuel cells arranged in parallel and the double-stack fuel cells, wherein the manifold comprises a first manifold element, a second manifold element and a third manifold element, the first manifold element comprises a first manifold main body provided with three first three-way runners and three second three-way runners, and each first three-way runner and each second three-way runner are provided with a main runner interface, a first branch runner interface and a second branch runner interface; the second manifold element and the third manifold element are respectively arranged at the left side and the right side of the first manifold element and are respectively provided with three steering flow channels; the first port of each diversion flow channel of the second manifold element and the third manifold element is arranged to be communicated with the outer ports of the two electric piles; the first branch runner interface and the second branch runner interface of each second type of three-way runner are respectively communicated with the second interfaces of the steering runners of the second manifold element and the third manifold element in pairs through pipelines.
Description
Technical Field
The invention relates to a manifold for a parallel arrangement of dual stack fuel cells and a dual stack fuel cell.
Background
Fuel cells have been under investigation since 1839 uk chemists William Grove invented them. The use of fuel cells in space shuttles in the united states until the 60's of the 20 th century has driven further development of fuel cells; the oil crisis occurred in the 70 s, and various countries have recognized the importance of energy and developed various energy policies to reduce the dependence on oil; the environmental awareness of people is rising in the 80 s, so that developed countries are promoted to seek high-efficiency clean energy and develop new energy industries.
At present, fuel cells (proton exchange membrane fuel cells) are widely applied in the field of vehicles, bring revolutionary breakthrough to the development of the automobile industry and promote the development of the fuel cells. The fuel cell can be used as a power battery of an automobile and can also be used as an auxiliary power supply, and the fuel cell automobile is considered to be different from the traditional automobile, the power source of the fuel cell automobile is from the fuel cell rather than an internal combustion engine, so that the emission of pollutants is reduced, and hydrogen is used as fuel, so that zero emission is completely realized.
Although fuel cells present many attractive advantages, there are also serious shortcomings, and the bottleneck in the application of fuel cell technology is high cost. Due to cost constraints, current fuel cell technology has only an economically competitive advantage in several specific areas. Power density (power per unit volume or unit mass of a fuel cell) is another important limitation.
Therefore, miniaturization and upsizing of fuel cells are a trend in the development of fuel cells, particularly large fuel cell stacks in the automotive field. However, the major difficulties faced in the development of large fuel cell stacks are: (1) when the galvanic pile is too long, the risk of waist collapse of the galvanic pile occurs in the using process; (2) the longer the galvanic pile is, the more difficult the fuel and the oxidant are uniformly distributed in the galvanic pile; (3) and the water and heat management of the galvanic pile is difficult when the galvanic pile is too long. In order to overcome the difficulties, a galvanic pile combination (series-parallel connection) mode is adopted at present, so that the difficulties of large-scale single pile development are overcome.
The domestic double-stack (series-parallel) structure is still in the research and development stage, and usually, on the basis of the analysis of the (series-parallel) structure, a fuel cell engine (series-parallel) control system is designed, and the air volume, the temperature and the humidity of the fuel cell engine are regulated through a certain control strategy so as to realize the maximum output of the fuel cell. These are all studies from the fuel cell control method. However, in the specific development process of large fuel cell stacks, the distribution of fuel, oxidant and other fluids and the pipeline pressure loss are important factors which affect the performance of the fuel cell stacks. In other words, the fuel, oxidant, etc. fluid must be properly distributed before entering the stack, so as to ensure the balanced operation of a plurality of (series) parallel single stacks.
The fluid distribution pipeline structure is generally determined according to the arrangement of the fuel cell stacks, and the fluid distribution pipeline structure is different due to different arrangement of the fuel cell stacks. Currently a fluid distribution manifold is typically provided intermediate two fuel cell stacks in series. Such a stack assembly has a large overall length and is difficult to arrange the fuel, oxidant, coolant, and other pipes. In addition, the manifold is arranged in the middle of the whole electric pile group, the sealing performance and the assembly requirement are high, the sealing is not easy, and the gas in the cooling liquid is not easy to discharge.
Disclosure of Invention
Therefore, the present invention is directed to provide a manifold for a dual stack fuel cell arranged in parallel and a dual stack fuel cell, wherein the manifold can uniformly distribute fuel, oxidant and cooling fluid to each single stack, and has compact structure and low pressure drop.
The purpose of the invention is realized by the following technical scheme.
In one aspect, the present invention provides a manifold for a dual stack fuel cell arranged in parallel, wherein the manifold comprises a first manifold element, a second manifold element and a third manifold element, wherein,
the first manifold element is used for being arranged between the end parts of two electric piles which are arranged in parallel, the first manifold element comprises a first manifold main body, the first manifold main body is provided with three first-type three-way flow channels and three second-type three-way flow channels, each first-type three-way flow channel is provided with a main flow channel interface, a first branch flow channel interface and a second branch flow channel interface, and the first branch flow channel interface and the second branch flow channel interface of each first-type three-way flow channel are arranged on the back surface facing the two electric piles and are respectively communicated with the inner side interfaces of the two electric piles; each second three-way runner is provided with a main runner interface, a first branch runner interface and a second branch runner interface, and the first branch runner interface and the second branch runner interface of each second three-way runner are arranged on the side surface of the first manifold main body;
the second manifold element and the third manifold element are respectively arranged at the left side and the right side of the first manifold element, the second manifold element comprises a second manifold main body, the third manifold element comprises a third manifold main body, the second manifold main body and the third manifold main body are respectively provided with three turning flow channels, and each turning flow channel is provided with a first interface facing two electric stacks and a second interface facing the first manifold main body; the first port of each diverting flow channel of the second manifold element is arranged to communicate with the outside port of a first stack, and the first port of each diverting flow channel of the third manifold element is arranged to communicate with the outside port of a second stack;
the first branch runner interface of each second type of three-way runner is respectively communicated with the second interfaces of the steering runners of the second manifold element in pairs through pipelines, and the second branch runner interface of each second type of three-way runner is respectively communicated with the second interfaces of the steering runners of the third manifold element in pairs through pipelines.
Further, the three first three-way flow channels are respectively an oxidant inlet three-way flow channel, a cooling liquid inlet three-way flow channel and a fuel outlet three-way flow channel; a first subchannel interface of the oxidant inlet three-way channel is arranged to be communicated with an oxidant inlet of a first electric pile, and a second subchannel interface of the oxidant inlet three-way channel is arranged to be communicated with an oxidant inlet of a second electric pile; a first shunt channel interface of the cooling liquid inlet three-way flow channel is communicated with a cooling liquid inlet of a first electric pile, and a second shunt channel interface of the cooling liquid inlet three-way flow channel is communicated with a cooling liquid inlet of a second electric pile; the first sub-channel interface of the fuel outlet three-way channel is communicated with the fuel outlet of the first electric pile, and the second sub-channel interface of the fuel outlet three-way channel is communicated with the fuel outlet of the second electric pile.
Further, the three second three-way flow channels are respectively a fuel inlet three-way flow channel, a cooling liquid outlet three-way flow channel and an oxidant outlet three-way flow channel; the first sub-runner interface of the fuel inlet three-way runner and the second sub-runner interface of the fuel inlet three-way runner are respectively communicated with the first steering runner of the second manifold element and the first steering runner of the third manifold element through a fuel inlet pipeline; and the first subchannel interface of the oxidant outlet three-way flow channel and the second subchannel interface of the oxidant outlet three-way flow channel are respectively communicated with the third steering flow channel of the second manifold element and the third steering flow channel of the third manifold element through the oxidant outlet pipeline.
Furthermore, the fuel inlet three-way flow channel, the oxidant inlet three-way flow channel, the cooling liquid inlet three-way flow channel, the fuel outlet three-way flow channel and the oxidant outlet three-way flow channel are sequentially arranged on the first manifold body from top to bottom; the first manifold body further includes a boss extending toward the third manifold element, and the coolant outlet three-way flow channel is provided on the boss.
Furthermore, a main runner interface of the fuel inlet three-way runner, a main runner interface of the oxidant inlet three-way runner, a main runner interface of the cooling liquid outlet three-way runner and a main runner interface of the oxidant outlet three-way runner are arranged on the front face of the first manifold body, which is far away from the two galvanic piles.
Further, a primary flow passage interface of a fuel outlet three-way flow passage is disposed on a side of the first manifold body facing the second manifold element or the third manifold element.
Furthermore, a fuel water storage tank is arranged below a main runner interface of the fuel outlet three-way runner.
Furthermore, a channel for a pipeline connecting a first branch runner interface of the cooling liquid outlet three-way runner and a first steering runner of the second manifold element to pass through is reserved behind the fuel inlet three-way runner of the first manifold main body.
In another aspect, the present invention further provides a dual stack fuel cell, wherein the dual stack fuel cell comprises two stacks arranged in parallel and the manifold.
The invention has the following advantages:
(1) the manifold can ensure that the working conditions of the two galvanic piles are the same by uniformly distributing the oxidant, the fuel and the cooling liquid of the large-scale fuel cell to each galvanic pile, thereby ensuring that the whole galvanic pile can stably work.
(2) The manifold of the invention has high integration, compact structure and convenient installation, reduces the installation requirement and the production cost, and greatly improves the power density of the fuel cell.
(3) The manifold has simple pipeline route, and can effectively reduce the resistance loss of the fluid.
(4) The development of the large fuel double-stack manifold is an important direction for developing the large fuel cell at present, the manifold is favorable for popularization and application of the fuel cell, particularly in the automobile industry, the traditional automobile has a larger environment, and further the maintenance of the influence of the tail gas emission (such as carbon dioxide and toxic and harmful substances) of the existing automobile on the human health is favorably reduced, so that the manifold has a wide application development prospect.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of one embodiment of a manifold according to the present invention;
FIG. 2 is a schematic view of a second manifold element;
FIG. 3 is a schematic view of a third manifold element;
FIG. 4 is an assembly view of the first manifold member;
FIG. 5 is a schematic structural view of a fuel inlet three-way flow passage of the first manifold element;
FIG. 6 is a schematic structural view of an oxidant inlet three-way flow channel of the first manifold element;
FIG. 7 is a schematic diagram of the structure of the coolant inlet three-way flow channel of the first manifold element;
FIG. 8 is a schematic structural view of an oxidant outlet three-way flow channel of the first manifold element;
FIG. 9 is a schematic structural view of a fuel outlet three-way flow passage of the first manifold element;
FIG. 10 is a schematic structural view of the coolant outlet three-way flow channel of the first manifold element;
wherein the figures include the following reference numerals:
1-a main channel interface of an oxidant outlet three-way channel;
101-a first subchannel interface of an oxidant outlet three-way channel;
102-a second shunt channel interface of the oxidant outlet three-way channel;
2-an oxidant outlet line;
3-a main runner interface of the three-way runner of the cooling liquid outlet;
301-a first sub-channel interface of the three-way channel of the cooling liquid outlet;
302-a second shunt channel interface of the three-way channel of the cooling liquid outlet;
4-a main runner interface of the cooling liquid inlet three-way runner;
401-a first subchannel interface of a three-way channel of a cooling liquid inlet;
402-a second subchannel interface of a three-way channel of a cooling fluid inlet;
5-coolant outlet line;
6-a main channel interface of the oxidant inlet three-way channel;
601-a first subchannel interface of an oxidant inlet three-way channel;
602-a second subchannel interface of an oxidant inlet three-way channel;
7-a main channel interface of the fuel inlet three-way channel;
701-a first shunting passage interface of a fuel inlet three-way passage;
702-a second split runner interface of the fuel inlet three-way runner;
8-a first manifold element;
9-a second manifold element;
901-first diverting flow-channel of a second manifold element;
902 — a second diverting flow-channel of a second manifold element;
903 — a second diverting flow-channel of a second manifold element;
10-fuel inlet line;
11-a third manifold element;
111-a first turn flow channel of a third manifold element;
112-a second diverted flow channel of a third manifold element;
113-a third diverting flow-channel of a third manifold element;
12-a first stack;
121-oxidant inlet of first stack;
122-coolant inlet of the first stack;
123-fuel outlet of the first stack;
124-fuel inlet of the first stack;
125-coolant outlet of the first stack;
126-oxidant outlet of first stack;
13-a second stack;
131-fuel inlet of second stack;
132-coolant outlet of second stack;
133-an oxidant outlet of a second stack;
134-oxidant inlet of second stack;
135-coolant inlet of the second stack;
136-fuel outlet of second stack;
141-main flow channel interface of fuel outlet three-way flow channel;
142-a fuel reservoir;
143-a first split flow channel interface of the fuel outlet three-way flow channel;
144-a second split runner interface of the fuel outlet three-way runner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The present invention provides a manifold for a dual stack fuel cell arranged in parallel, wherein the manifold comprises a first manifold element, a second manifold element and a third manifold element, wherein,
the first manifold element is used for being arranged between the end parts of two electric piles which are arranged in parallel, the first manifold element comprises a first manifold main body, the first manifold main body is provided with three first-type three-way flow channels and three second-type three-way flow channels, each first-type three-way flow channel is provided with a main flow channel interface, a first branch flow channel interface and a second branch flow channel interface, and the first branch flow channel interface and the second branch flow channel interface of each first-type three-way flow channel are arranged on the back surface facing the two electric piles and are respectively communicated with the inner side interfaces of the two electric piles; each second three-way runner is provided with a main runner interface, a first branch runner interface and a second branch runner interface, and the first branch runner interface and the second branch runner interface of each second three-way runner are arranged on the side surface of the first manifold main body;
the second manifold element and the third manifold element are respectively arranged at the left side and the right side of the first manifold element, the second manifold element comprises a second manifold main body, the third manifold element comprises a third manifold main body, the second manifold main body and the third manifold main body are respectively provided with three turning flow channels, and each turning flow channel is provided with a first interface facing two electric stacks and a second interface facing the first manifold main body; the first port of each diverting flow channel of the second manifold element is arranged to communicate with the outside port of a first stack, and the first port of each diverting flow channel of the third manifold element is arranged to communicate with the outside port of a second stack;
the first branch runner interface of each second type of three-way runner is respectively communicated with the second interfaces of the steering runners of the second manifold element in pairs through pipelines, and the second branch runner interface of each second type of three-way runner is respectively communicated with the second interfaces of the steering runners of the third manifold element in pairs through pipelines.
Referring to fig. 1 and 4, the manifold of the present invention comprises a first manifold element 8, a second manifold element 9 and a third manifold element 11.
The first manifold element 8 is used for being arranged between the end parts of two electric piles arranged in parallel, the first manifold element 8 comprises a first manifold main body, the first manifold main body is provided with three first-type three-way flow channels and three second-type three-way flow channels, each first-type three-way flow channel is provided with a main flow channel interface, a first branch flow channel interface and a second branch flow channel interface, and the first branch flow channel interface and the second branch flow channel interface of each first-type three-way flow channel are arranged on the back faces of the two electric piles and are respectively communicated with the inner side interfaces of the two electric piles; each second three-way runner is provided with a main runner interface, a first branch runner interface and a second branch runner interface, and the first branch runner interface and the second branch runner interface of each second three-way runner are arranged on the side surface of the first manifold main body.
The second manifold element 9 and the third manifold element 11 are respectively arranged at the left side and the right side of the first manifold element 8, the second manifold element 9 comprises a second manifold main body, the third manifold element 11 comprises a third manifold main body, the second manifold main body and the third manifold main body are respectively provided with three turning flow channels, and each turning flow channel is provided with a first interface facing the two stacks and a second interface facing the first manifold main body; the first port of each diverting flow channel of the second manifold element 9 is arranged to communicate with the external port of the first stack 12 and the first port of each diverting flow channel of the third manifold element 11 is arranged to communicate with the external port of the second stack 13.
The first branch flow channel interface of each second type of three-way flow channel is respectively communicated with the second interfaces of the turning flow channels of the second manifold element 9 in pairs through pipelines, and the second branch flow channel interface of each second type of three-way flow channel is respectively communicated with the second interfaces of the turning flow channels of the third manifold element 11 in pairs through pipelines.
In one embodiment of the present invention, the three first three-way flow passages are an oxidant inlet three-way flow passage, a coolant inlet three-way flow passage and a fuel outlet three-way flow passage. Referring to fig. 2-4, 6-7 and 9, the first subchannel interface 601 of the oxidant inlet three-way channel is placed in communication with the oxidant inlet 121 of the first stack and the second subchannel interface 602 of the oxidant inlet three-way channel is placed in communication with the oxidant inlet 134 of the second stack. The first sub-channel interface 401 of the coolant inlet three-way channel is arranged to communicate with the coolant inlet 122 of the first stack and the second sub-channel interface 402 of the coolant inlet three-way channel is arranged to communicate with the coolant inlet 135 of the second stack. The first split flow path interface 143 of the fuel outlet three-way flow path is arranged to communicate with the fuel outlet 123 of the first stack and the second split flow path interface 144 of the fuel outlet three-way flow path is arranged to communicate with the fuel outlet 136 of the second stack.
In one embodiment of the present invention, the three second three-way flow passages are a fuel inlet three-way flow passage, a coolant outlet three-way flow passage, and an oxidant outlet three-way flow passage, respectively. Referring to fig. 1-5, 8 and 10, the first subchannel interface 701 of the fuel inlet three-way flow passage and the second subchannel interface 702 of the fuel inlet three-way flow passage communicate with the first turn flow passage 901 of the second manifold element and the first turn flow passage 111 of the third manifold element, respectively, via the fuel inlet line 10. The first diversion channel interface 301 of the coolant outlet three-way flow channel and the second diversion channel interface 302 of the coolant outlet three-way flow channel are respectively communicated with the second diversion channel 902 of the second manifold element and the second diversion channel 112 of the third manifold element through the coolant outlet pipeline 5. The first subchannel interface 101 of the oxidant outlet three-way channel and the second subchannel interface 102 of the oxidant outlet three-way channel are respectively communicated with the third diverting channel 903 of the second manifold element and the third diverting channel 113 of the third manifold element via the oxidant outlet line 2.
In one embodiment of the present invention, the first three-way flow passage and the second three-way flow passage may take any configuration known in the art, such as a T-shape or a Y-shape. As shown in fig. 5-8, the fuel inlet three-way flow path is T-shaped, and the oxidant inlet three-way flow path, the oxidant outlet three-way flow path, and the coolant inlet three-way flow path are Y-shaped.
Of course, the first three-way flow passage and the second three-way flow passage can also adopt other forms. As shown in fig. 9 to 10, the fuel outlet three-way flow passage and the coolant outlet three-way flow passage are deformed by T-shaped or Y-shaped three-way flow passages.
In one embodiment of the present invention, the fuel inlet three-way flow passage, the oxidant inlet three-way flow passage, the coolant inlet three-way flow passage, the fuel outlet three-way flow passage, and the oxidant outlet three-way flow passage are sequentially arranged in the first manifold body from top to bottom.
In one embodiment of the invention, referring to fig. 1 and 4, the first manifold body further comprises a boss extending towards the third manifold element 11, the coolant outlet three-way flow channel being provided on the boss. Thereby, the volume of the first manifold body can be reduced.
In one embodiment of the present invention, referring to fig. 1 and 4, the primary channel interface 7 of the fuel inlet three-way channel, the primary channel interface 6 of the oxidant inlet three-way channel, the primary channel interface 4 of the coolant inlet three-way channel, the primary channel interface 3 of the coolant outlet three-way channel, and the primary channel interface 1 of the oxidant outlet three-way channel are disposed on the front side of the first manifold body facing away from the two stacks.
In one embodiment of the invention, referring to fig. 4, the primary flow channel interface 141 of the fuel outlet three-way flow channel is provided on the side of the first manifold body facing the second or third manifold element 9, 11.
In one embodiment of the present invention, a fuel reservoir 142 is provided below the main flow channel interface 141 of the fuel outlet three-way flow channel. The fuel water reservoir 142 is used to store water in the stack and then is periodically drained, for example, through a tail drain valve. In addition, excess fuel from the primary flow channel interface 141 of the fuel outlet three-way flow channel can be returned to the stack.
In one embodiment of the invention, the first manifold body leaves behind said fuel inlet three-way flow channel a passage for the passage of the piping connecting the first sub-flow channel interface 301 of the coolant outlet three-way flow channel and the first turn flow channel 901 of the second manifold element.
As shown in fig. 1, the dual stack fuel cell of the present invention includes two stacks arranged in parallel and a manifold.
In one embodiment of the invention, the first manifold element 8, the second manifold element 9 and the third manifold element 11 are mounted to the end plates of the two stacks via bolts.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Manifold for a dual stack fuel cell arranged in parallel, characterized in that the manifold comprises a first manifold element (8), a second manifold element (9) and a third manifold element (11), wherein,
the first manifold element (8) is arranged between the ends of two electric piles arranged in parallel, the first manifold element (8) comprises a first manifold main body, the first manifold main body is provided with three first-type three-way flow channels and three second-type three-way flow channels, each first-type three-way flow channel is provided with a main flow channel interface, a first branch flow channel interface and a second branch flow channel interface, and the first branch flow channel interface and the second branch flow channel interface of each first-type three-way flow channel are arranged on the back surface facing the two electric piles and are respectively communicated with the inner side interfaces of the two electric piles; each second three-way runner is provided with a main runner interface, a first branch runner interface and a second branch runner interface, and the first branch runner interface and the second branch runner interface of each second three-way runner are arranged on the side surface of the first manifold main body;
the second manifold element (9) and the third manifold element (11) are respectively arranged at the left side and the right side of the first manifold element (8), the second manifold element (9) comprises a second manifold main body, the third manifold element (11) comprises a third manifold main body, the second manifold main body and the third manifold main body are respectively provided with three turning flow channels, and each turning flow channel is provided with a first interface facing two electric piles and a second interface facing the first manifold main body; the first port of each diverting flow channel of the second manifold element (9) is arranged to communicate with the outside port of a first stack (12), and the first port of each diverting flow channel of the third manifold element (11) is arranged to communicate with the outside port of a second stack (13);
the first branch flow channel interface of each second type of three-way flow channel is respectively communicated with the second interfaces of the turning flow channels of the second manifold element (9) in pairs through pipelines, and the second branch flow channel interface of each second type of three-way flow channel is respectively communicated with the second interfaces of the turning flow channels of the third manifold element (11) in pairs through pipelines.
2. The manifold of claim 1, wherein the three first three-way flow channels are an oxidant inlet three-way flow channel, a coolant inlet three-way flow channel, and a fuel outlet three-way flow channel; a first subchannel interface (601) of the oxidant inlet three-way channel is arranged to communicate with the oxidant inlet (121) of a first stack, and a second subchannel interface (602) of the oxidant inlet three-way channel is arranged to communicate with the oxidant inlet (134) of a second stack; a first shunt channel interface (401) of the cooling liquid inlet three-way flow channel is arranged to be communicated with a cooling liquid inlet (122) of a first electric pile, and a second shunt channel interface (402) of the cooling liquid inlet three-way flow channel is arranged to be communicated with a cooling liquid inlet (135) of a second electric pile; a first sub-flowpath interface (143) of the fuel outlet three-way flowpath is configured to communicate with a fuel outlet (123) of a first stack and a second sub-flowpath interface (144) of the fuel outlet three-way flowpath is configured to communicate with a fuel outlet (136) of a second stack.
3. The manifold of claim 2, wherein the three second three-way flow channels are a fuel inlet three-way flow channel, a coolant outlet three-way flow channel, and an oxidant outlet three-way flow channel, respectively; a first branch flow channel interface (701) of the fuel inlet three-way flow channel and a second branch flow channel interface (702) of the fuel inlet three-way flow channel are respectively communicated with a first steering flow channel (901) of a second manifold element and a first steering flow channel (111) of a third manifold element through a fuel inlet pipeline (10); and a first subchannel interface (301) of the cooling liquid outlet three-way runner and a second subchannel interface (302) of the cooling liquid outlet three-way runner are respectively communicated with a second diversion runner (902) of the second manifold element and a second diversion runner (112) of the third manifold element through a cooling liquid outlet pipeline (5), and a first subchannel interface (101) of the oxidant outlet three-way runner and a second subchannel interface (102) of the oxidant outlet three-way runner are respectively communicated with a third diversion runner (903) of the second manifold element and a third diversion runner (113) of the third manifold element through an oxidant outlet pipeline (2).
4. The manifold of claim 3, wherein the fuel inlet three-way flow channel, the oxidant inlet three-way flow channel, the coolant inlet three-way flow channel, the fuel outlet three-way flow channel, and the oxidant outlet three-way flow channel are arranged in the first manifold body in sequence from top to bottom; the first manifold body further comprises a protrusion extending towards the third manifold element (11), the coolant outlet three-way flow channel being provided on the protrusion.
5. A manifold according to claim 4, characterized in that the main channel connection (7) of the fuel inlet three-way channel, the main channel connection (6) of the oxidant inlet three-way channel, the main channel connection (4) of the coolant inlet three-way channel, the main channel connection (3) of the coolant outlet three-way channel and the main channel connection (1) of the oxidant outlet three-way channel are arranged on the front side of the first manifold body facing away from the two cell stacks.
6. A manifold according to claim 5, wherein a primary channel interface (141) of a fuel outlet three-way flow channel is provided on the side of the first manifold body facing the second manifold element (9) or the third manifold element (11).
7. A manifold according to claim 6, wherein a fuel reservoir (142) is provided below the primary flow path interface (141) of the fuel outlet tee flow path.
8. A manifold according to claim 7, wherein the first manifold body is provided with a passage behind the fuel inlet three-way flow channel for passing therethrough a conduit connecting the first sub-flow channel interface (301) of the coolant outlet three-way flow channel and the first diverting flow channel (901) of the second manifold element.
9. A dual stack fuel cell comprising two stacks arranged in parallel and the manifold of any one of claims 1 to 8.
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| CN202010030951.9A CN113113637B (en) | 2020-01-13 | 2020-01-13 | Manifold for a parallel arrangement of dual stack fuel cells and dual stack fuel cell |
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| CN114464837B (en) * | 2021-10-08 | 2024-01-16 | 东风汽车集团股份有限公司 | Fuel cell system and assembly process |
| CN114497622B (en) * | 2021-10-08 | 2024-01-16 | 东风汽车集团股份有限公司 | Fuel cell system |
| CN114464863B (en) * | 2021-10-08 | 2023-12-19 | 东风汽车集团股份有限公司 | Distribution manifold and fuel cell |
| CN114725425B (en) * | 2022-04-08 | 2023-11-21 | 北京氢沄新能源科技有限公司 | Fuel cell engine intake manifold and fuel cell engine |
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| CN205319240U (en) * | 2015-12-29 | 2016-06-15 | 新源动力股份有限公司 | Manifolding for fuel cell |
| JP2016171072A (en) * | 2015-03-12 | 2016-09-23 | 日本碍子株式会社 | Stack structure of fuel battery |
| CN108417875A (en) * | 2018-02-09 | 2018-08-17 | 广东国鸿氢能科技有限公司 | Distributing manifold and fuel cell pile group |
| CN109273751A (en) * | 2017-07-18 | 2019-01-25 | 通用电气公司 | Fuel-cell stack assembly |
| CN110277569A (en) * | 2019-06-13 | 2019-09-24 | 苏州奥加华新能源有限公司 | A kind of fuel cell stack with central manifold |
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| US6875535B2 (en) * | 2002-04-15 | 2005-04-05 | Hydrogenics Corporation | Manifold for a fuel cell system |
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| JP2016171072A (en) * | 2015-03-12 | 2016-09-23 | 日本碍子株式会社 | Stack structure of fuel battery |
| CN205319240U (en) * | 2015-12-29 | 2016-06-15 | 新源动力股份有限公司 | Manifolding for fuel cell |
| CN109273751A (en) * | 2017-07-18 | 2019-01-25 | 通用电气公司 | Fuel-cell stack assembly |
| CN108417875A (en) * | 2018-02-09 | 2018-08-17 | 广东国鸿氢能科技有限公司 | Distributing manifold and fuel cell pile group |
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