CN213242606U - Fuel cell and fuel cell assembly - Google Patents
Fuel cell and fuel cell assembly Download PDFInfo
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- CN213242606U CN213242606U CN202022562105.XU CN202022562105U CN213242606U CN 213242606 U CN213242606 U CN 213242606U CN 202022562105 U CN202022562105 U CN 202022562105U CN 213242606 U CN213242606 U CN 213242606U
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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
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Abstract
The utility model provides a fuel cell and a fuel cell component, relating to the battery field, wherein the fuel cell comprises an anode plate, a membrane electrode assembly and a cathode plate, and the membrane electrode assembly is arranged between the anode plate and the cathode plate; an anode transition region bulge is arranged on one surface of the anode plate facing the membrane electrode assembly, and a cathode transition region bulge is arranged on one surface of the cathode plate facing the membrane electrode assembly; in the assembled state, along the extending direction of the anode plate to the cathode plate, the projection of the anode transition region on the cathode plate is partially or completely coincided with the projection of the cathode transition region. The fuel cell assembly comprises the fuel cell. The utility model discloses alleviated the protruding unable membrane electrode frame of fixing of transition zone of negative pole and positive pole among the prior art, easily leaded to membrane electrode frame or carbon paper to invade the transition zone of one of them utmost point, thereby the pressure drop of this side of increase causes and is unfavorable for the drainage to lead to taking place the flooding, and then makes the permanent technical problem that descends of fuel cell performance.
Description
Technical Field
The utility model belongs to the technical field of the battery and specifically relates to a fuel cell and fuel cell subassembly are related to.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs) directly convert chemical energy stored in fuel gas, such as hydrogen, into electrical energy by means of an electrochemical reaction. The proton exchange membrane fuel cell generates electricity, has the characteristics of quick normal-temperature start, high energy conversion efficiency, green and pollution-free tail gas, safety and the like, and can be used for fixed power stations, mobile power stations, aviation generators, navigation generators, vehicle-mounted generators, field emergency power supplies, portable power supplies and the like.
At present, the bipolar plate of the fuel cell mainly comprises three categories, namely a graphite bipolar plate, a composite bipolar plate and a metal bipolar plate. The fuel cell bipolar plate is one of important components in a proton exchange membrane fuel cell, has the functions of introducing and distributing raw material fluid, collecting and leading out reaction tail gas and generated water, isolating different flow fields and fluids, collecting and conducting heat generated in the reaction process of the fuel cell, collecting and conducting current generated by the electrochemistry of the fuel cell and the like, and is an important component for maintaining a good working state of the fuel cell. In order to realize various functions of the bipolar plate, the bipolar plate is provided with a plurality of functional structures, which mainly comprise a fuel cell flow field (comprising a fuel gas flow field and an oxidant gas flow field), a fuel gas inlet and outlet, an oxidant gas inlet and outlet, a coolant inlet and outlet, a sealing structure and other functional structures. In order to control the deviation of the mass flow rate flowing into each flow channel within a small 5%, a transition zone is usually provided between the gas inlet and the reaction zone, which provides for a uniform distribution.
At present, the transition zone mainly has two forms, namely a non-forced diffusion form, namely non-communicated independent bulges, and a forced diffusion form, namely a communicated flow channel-like form, which can be a straight flow channel or a winding flow channel. For the non-forced diffusion type transition region, because the areas of the cathode manifold opening and the anode manifold opening are different, the sizes of the corresponding cathode diffusion region air inlets and the anode diffusion region air inlets are different, and the sizes and the angles of the cathode diffusion region air inlets and the anode diffusion region air inlets are different, the individual transition region design is usually carried out by adopting point-shaped, strip-shaped and streamline-shaped bulges so as to achieve the effect of uniformly distributing the fluid.
However, in the prior art, when the transition regions of the cathode and the anode are designed separately, only the flow uniformity and the pressure drop of each electrode are generally considered, and the matching relationship between the stack assembly process and the membrane electrode assembly is not considered, so that after the stack is completed, the bulge of the transition region of the cathode and the anode cannot fix the frame of the membrane electrode, that is, the distribution region of the membrane electrode assembly, but instead uses the lug boss on the outer edge of the transition region for fixing. The fixing mode is unstable, so that the frame of the membrane electrode is easy to deform and invade into the transition area of one of the two poles due to different working pressures on the two sides of the membrane electrode assembly; once the frame of the membrane electrode or the carbon paper invades the transition area of one of the electrodes, the pressure drop of the side is increased, which is unfavorable for water drainage, thus causing flooding and further causing permanent reduction of the performance of the fuel cell.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fuel cell and fuel cell subassembly to alleviate the protruding unable membrane electrode frame of fixing of transition zone of the negative pole that exists and positive pole among the prior art, easily lead to membrane electrode frame or carbon paper to invade the transition zone of one of them utmost point, thereby increase the pressure drop of this side, thereby cause and be unfavorable for the drainage and lead to taking place the flooding, and then make the technical problem of the permanent decline of fuel cell performance.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a fuel cell, including an anode plate, a membrane electrode assembly, and a cathode plate, where the membrane electrode assembly is disposed between the anode plate and the cathode plate; an anode transition region bulge is arranged on one surface of the anode plate facing the membrane electrode assembly, and a cathode transition region bulge is arranged on one surface of the cathode plate facing the membrane electrode assembly;
in an assembly state, along the direction that the anode plate extends towards the cathode plate, the projection of the anode transition area bulge on the cathode plate is partially or completely coincided with the projection of the cathode transition area.
In an alternative embodiment, in the assembled state, in the direction in which the anode plate extends towards the cathode plate: one end of the projection of the anode transition region on the cathode plate in the length direction is superposed with the middle of the projection of the cathode transition region in the length direction; or one end of the projection of the cathode transition region on the anode plate in the length direction is superposed with the middle of the projection of the anode transition region in the length direction.
In an alternative embodiment, in the assembled state, in the direction in which the anode plate extends towards the cathode plate: the middle part of the projection of the anode transition area bulge on the cathode plate in the length direction is coincided with the middle part of the projection of the cathode transition area in the length direction.
In an alternative embodiment, the anode transition region protrusion and the cathode transition region protrusion each comprise a plurality.
In an alternative embodiment, the anode transition zone protrusions comprise circular protrusions and/or square protrusions and/or trapezoidal protrusions and/or rectangular protrusions and/or parallelogram protrusions; the cathode transition region protrusions comprise circular protrusions and/or square protrusions and/or trapezoidal protrusions and/or rectangular protrusions and/or parallelogram protrusions. Wherein "and/or" means that the anode transition region protrusions and the cathode transition region protrusions respectively comprise any one or more of the above-described corresponding protrusions.
In an alternative embodiment, the respective faces of the anode transition zone protrusions and the cathode transition zone protrusions facing the membrane electrode assembly are both planar.
In an alternative embodiment, an anode transition region outer edge protrusion is further disposed on a side of the anode plate facing the membrane electrode assembly, and a cathode transition region outer edge protrusion is further disposed on a side of the cathode plate facing the membrane electrode assembly.
In an alternative embodiment, in the direction in which the anode plate extends toward the cathode plate, the projection of the anode transition region outer edge projection on the cathode plate is partially or completely coincident with the cathode transition region outer edge projection.
In an alternative embodiment, an anode gasket is fitted between the anode plate and the membrane electrode assembly; a cathode seal is assembled between the cathode plate and the membrane electrode assembly.
In a second aspect, embodiments of the present invention provide a fuel cell assembly comprising a plurality of fuel cells as described in any one of the preceding embodiments.
The embodiment of the utility model provides a can realize following beneficial effect:
in a first aspect, an embodiment of the present invention provides a fuel cell, including an anode plate, a membrane electrode assembly, and a cathode plate, wherein the membrane electrode assembly is disposed between the anode plate and the cathode plate; an anode transition region bulge is arranged on one surface of the anode plate facing the membrane electrode assembly, and a cathode transition region bulge is arranged on one surface of the cathode plate facing the membrane electrode assembly; in the assembled state, along the extending direction of the anode plate to the cathode plate, the projection of the anode transition region on the cathode plate is partially or completely coincided with the projection of the cathode transition region.
In the embodiment of the present invention, the anode transition region protrusion and the cathode transition region protrusion are arranged, and the assembly state is made, and the direction extending from the anode plate to the cathode plate is followed, the projection of the anode transition region protrusion on the cathode plate coincides with the projection part of the cathode transition region or coincides completely, so that in the assembly state, the same part of the membrane electrode frame of the membrane electrode assembly is supported and fixed by the anode transition region protrusion and the cathode transition region protrusion, and the situation that the membrane electrode frame or the carbon paper covering the transition region of the membrane electrode assembly is deformed and invades into one of the electrode transition regions due to different working pressures at two sides of the membrane electrode assembly is reduced; and the technical problems that the transition region bulge of the cathode and the anode in the prior art cannot fix the frame of the membrane electrode, the frame of the membrane electrode or carbon paper easily invades the transition region of one electrode, the pressure drop of the side is increased, and the water flooding caused by unfavorable drainage is caused, so that the performance of the fuel cell is permanently reduced are solved.
A second aspect of embodiments of the present invention further provides a fuel cell assembly comprising a plurality of fuel cells as provided in the first aspect; because the embodiment of the utility model provides a fuel cell assembly includes the fuel cell that the first aspect provided, therefore, the embodiment of the utility model provides a fuel cell assembly can reach all beneficial effects that the fuel cell that the first aspect provided can reach.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a membrane electrode assembly in a fuel cell according to an embodiment of the present invention;
fig. 2 is an exploded view of a first assembly structure of an anode plate, a membrane electrode assembly and a cathode plate in a fuel cell according to an embodiment of the present invention;
fig. 3 is a schematic view showing a state where a projection of the anode transition region protrusion on the cathode plate coincides with a projection of the cathode transition region protrusion in a direction in which the anode plate extends toward the cathode plate in the fuel cell shown in fig. 2 in an assembled state;
fig. 4 is a schematic view showing another state where the projection of the anode transition region protrusion on the cathode plate coincides with the cathode transition region protrusion in the direction in which the anode plate extends toward the cathode plate in the assembled state of the fuel cell shown in fig. 2;
fig. 5 is a schematic view showing a state where a projection of the anode transition region protrusion on the cathode plate and a further projection of the cathode transition region protrusion coincide with each other in a direction in which the anode plate extends toward the cathode plate in the fuel cell shown in fig. 2 in an assembled state;
fig. 6 is a top view of a second assembly structure of an anode plate, a membrane electrode assembly and a cathode plate in a fuel cell according to an embodiment of the present invention, along a direction from the anode plate to the cathode plate;
FIG. 7 is a cross-sectional front view of a transition zone portion of the fuel cell shown in FIG. 6;
fig. 8 is a partial structure enlarged view of a portion a in fig. 7.
Icon: 1-an anode plate; 11-the anode transition zone is convex; 101-oxidant manifold port; 102-coolant manifold ports; 103-fuel gas manifold port; 104-active area ridge; 2-a membrane electrode assembly; 20-membrane electrode frame; 3-a cathode plate; 31-cathode transition zone raised; 41-anode sealing gasket; 42-cathode gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
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, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "middle", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed when in use, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example one
The present embodiment provides a fuel cell, taking the direction extending from the top to the bottom as the direction extending from the anode plate to the cathode plate, referring to fig. 1 and fig. 2, the fuel cell includes an anode plate 1, a membrane electrode assembly 2, and a cathode plate 3, the membrane electrode assembly 2 is disposed between the anode plate 1 and the cathode plate 3; an anode transition region bulge 11 is arranged on one surface of the anode plate 1 facing the membrane electrode assembly 2, and a cathode transition region bulge 31 is arranged on one surface of the cathode plate 3 facing the membrane electrode assembly 2; in the assembled state, the projection of the anode transition region protrusion 11 on the cathode plate 3 partially or completely coincides with the cathode transition region protrusion 31 in the direction in which the anode plate 1 extends toward the cathode plate 3.
In this embodiment, by providing the anode transition region protrusion 11 and the cathode transition region protrusion 31, and making the projection of the anode transition region protrusion 11 on the cathode plate 3 partially or completely coincide with the cathode transition region protrusion 31 along the direction from the anode plate 1 to the cathode plate 3 in the assembled state, the same part of the membrane electrode frame 20 of the membrane electrode assembly 2 can be supported and fixed by the anode transition region protrusion 11 and the cathode transition region protrusion 31 in the assembled state, so as to reduce the situation that the membrane electrode frame 20 or the carbon paper covering the transition region of the membrane electrode assembly 2 deforms and invades into one of the electrode transition regions due to different working pressures at two sides of the membrane electrode assembly 2; and the technical problems that the membrane electrode frame 20 cannot be fixed by the transition region bulge of the cathode and the anode in the prior art, the membrane electrode frame 20 or carbon paper easily invades the transition region of one of the electrodes, the pressure drop of the side is increased, and flooding is caused due to unfavorable drainage, so that the performance of the fuel cell is permanently reduced are solved.
In this embodiment, in an assembled state, along a direction in which the anode plate 1 extends to the cathode plate 3, a projection of the anode transition region protrusion 11 on the cathode plate 3 is partially or completely overlapped with the cathode transition region protrusion 31, wherein the following forms mainly exist under the condition of partial overlapping:
first, with reference to fig. 3, in the assembled state, in the direction in which the anode plate 1 extends towards the cathode plate 3: one end of the projection of the anode transition region bulge 11 on the cathode plate 3 in the length direction is superposed with the middle of the cathode transition region bulge 31 in the length direction;
secondly, referring to fig. 4, one end of the cathode transition region protrusion 31 in the length direction of the projection on the anode plate 1 coincides with the middle of the anode transition region protrusion 11 in the length direction.
Third, with reference to fig. 5, in the assembled state, in the direction in which the anode plate 1 extends towards the cathode plate 3: the middle of the projection of the anode transition region protrusion 11 on the cathode plate 3 in the length direction coincides with the middle of the cathode transition region protrusion 31 in the length direction.
In the case of all coincidence, as shown in fig. 6 to 8, the anode transition region protrusion 11 and the cathode transition region protrusion 31 are both non-shaped circular protrusions, and in this case, of course, the anode transition region protrusion 11 and the cathode transition region protrusion 31 may also be both non-shaped positive direction protrusions or the like which are easily coincided.
In this embodiment, each of the anode transition region protrusions 11 and the cathode transition region protrusions 31 includes a plurality of protrusions, and the specific shapes of the plurality of anode transition region protrusions 11 and the plurality of cathode transition region protrusions 31 are not limited, for example, but not limited to, the anode transition region protrusions 11 include circular protrusions and/or square protrusions and/or trapezoidal protrusions and/or rectangular protrusions and/or parallelogram protrusions; the cathode transition zone protrusions 31 comprise circular protrusions and/or square protrusions and/or trapezoidal protrusions and/or rectangular protrusions and/or parallelogram protrusions. Where "and/or" means that the anode transition region protrusion 11 and the cathode transition region protrusion 31 respectively include any one or more of the above-described corresponding protrusions.
Preferably, the respective surfaces of the anode transition region protrusion 11 and the cathode transition region protrusion 31 facing the membrane electrode assembly 2 are both flat surfaces, so that the supporting force of the anode transition region protrusion 11 and the cathode transition region protrusion 31 on the membrane electrode frame 20 of the membrane electrode assembly 2 can be improved.
In addition, in a more preferred embodiment of the present embodiment, an anode transition region outer edge protrusion is further disposed on a surface of the anode plate 1 facing the membrane electrode assembly 2, and the anode transition region outer edge protrusion is located at an outer edge portion of the transition region of the anode plate 1; and a cathode transition region outer edge bulge is further arranged on one surface of the cathode plate 3 facing the membrane electrode assembly 2 and is positioned at the outer edge part of the transition region of the cathode plate 3. Therefore, the membrane electrode frame 20 can be supported by the anode transition region outer edge bulge, the cathode transition region outer edge bulge, the anode transition region bulge 11 and the cathode transition region bulge 31 together, so that the stability of the membrane electrode frame 20 is fully ensured, and the stable operation of the fuel cell is facilitated.
To further increase the stability of the fuel cell after fixation, it is further preferred that, in the assembled state, in the direction in which the anode plate 1 extends towards the cathode plate 3, the projection of the outer edge projection of the anode transition region onto the cathode plate 3 partially or completely coincides with the outer edge projection of the cathode transition region.
In addition, referring to fig. 2 and 8, an anode gasket 41 is assembled between the anode plate 1 and the membrane electrode assembly 2, so that an independent anode reaction chamber is formed between the anode plate 1, the anode gasket 41 and the membrane electrode assembly 2; a cathode gasket 42 is fitted between the cathode plate 3 and the membrane electrode assembly 2, so that an independent cathode reaction chamber is formed between the cathode plate 3, the anode gasket 41 and the membrane electrode assembly 2.
In addition, as shown in fig. 6, taking the anode plate 1 as an example, the anode plate 1 and the cathode plate 3 are provided with an oxidant manifold port 101, a coolant manifold port 102, a fuel gas manifold port 103, and an activation area ridge 104; the membrane electrode assembly 2 is provided with a proton exchange membrane coated with a catalyst for the operation of the fuel cell.
Example two
The present example provides a fuel cell assembly including a fuel cell provided in any one of the optional implementations of the first example.
Since the fuel cell assembly provided by the present embodiment includes the fuel cell described in the first embodiment, the fuel cell assembly provided by the present embodiment can achieve all the advantages that can be achieved by the fuel cell in the first embodiment, and the specific structure and the achieved effects thereof can be obtained with reference to each optional or preferred embodiment in the first embodiment.
Finally, it should be noted that: the embodiments in the present description are all described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts among the embodiments can be referred to each other; the above embodiments in the present specification are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A fuel cell is characterized by comprising an anode plate (1), a membrane electrode assembly (2) and a cathode plate (3), wherein the membrane electrode assembly (2) is arranged between the anode plate (1) and the cathode plate (3); an anode transition region bulge (11) is arranged on one surface of the anode plate (1) facing the membrane electrode assembly (2), and a cathode transition region bulge (31) is arranged on one surface of the cathode plate (3) facing the membrane electrode assembly (2);
in the assembled state, along the direction that the anode plate (1) extends to the cathode plate (3), the projection of the anode transition region protrusion (11) on the cathode plate (3) is partially or completely coincided with the cathode transition region protrusion (31).
2. A fuel cell according to claim 1, characterized in that, in the assembled state, in the direction in which the anode plate (1) extends towards the cathode plate (3):
one end of the anode transition region bulge (11) in the length direction of the projection on the cathode plate (3) is superposed with the middle part of the cathode transition region bulge (31) in the length direction;
or one end of the projection of the cathode transition region bulge (31) on the anode plate (1) in the length direction is superposed with the middle of the anode transition region bulge (11) in the length direction.
3. A fuel cell according to claim 1, characterized in that, in the assembled state, in the direction in which the anode plate (1) extends towards the cathode plate (3):
the middle part of the projection of the anode transition region bulge (11) on the cathode plate (3) in the length direction is superposed with the middle part of the cathode transition region bulge (31) in the length direction.
4. A fuel cell according to any one of claims 1-3, characterized in that the anode transition zone protrusion (11) and the cathode transition zone protrusion (31) each comprise a plurality.
5. The fuel cell according to any one of claims 1 to 3,
the anode transition region bulges (11) comprise round bulges and/or square bulges and/or trapezoidal bulges and/or rectangular bulges and/or parallelogram bulges;
the cathode transition zone protrusions (31) comprise circular protrusions and/or square protrusions and/or trapezoidal protrusions and/or rectangular protrusions and/or parallelogram protrusions.
6. A fuel cell according to any one of claims 1-3, characterized in that the respective faces of the anode transition zone protrusions (11) and the cathode transition zone protrusions (31) facing the membrane electrode assembly (2) are both planar.
7. The fuel cell according to claim 1, wherein an anode transition region outer edge projection is further provided on a face of the anode plate (1) facing the membrane electrode assembly (2), and a cathode transition region outer edge projection is further provided on a face of the cathode plate (3) facing the membrane electrode assembly (2).
8. A fuel cell according to claim 7, characterized in that, in the assembled state, the projection of the anode transition region outer edge projection onto the cathode plate (3) coincides partially or completely with the cathode transition region outer edge projection in the direction in which the anode plate (1) extends towards the cathode plate (3).
9. A fuel cell according to claim 1, wherein an anode gasket (41) is fitted between the anode plate (1) and the membrane electrode assembly (2); a cathode seal (42) is fitted between the cathode plate (3) and the membrane electrode assembly (2).
10. A fuel cell assembly comprising a plurality of fuel cells according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022562105.XU CN213242606U (en) | 2020-11-06 | 2020-11-06 | Fuel cell and fuel cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022562105.XU CN213242606U (en) | 2020-11-06 | 2020-11-06 | Fuel cell and fuel cell assembly |
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| Publication Number | Publication Date |
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| CN213242606U true CN213242606U (en) | 2021-05-18 |
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| CN202022562105.XU Active CN213242606U (en) | 2020-11-06 | 2020-11-06 | Fuel cell and fuel cell assembly |
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| CN (1) | CN213242606U (en) |
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