Fuel cell experimental device

Abstract

The utility model provides a fuel cell experiment device, the fuel cell experiment device comprises a first end plate and at least two temperature control assemblies, the first end plate is provided with an observation window, the temperature control assemblies are arranged on the first end plate, and the temperature control assemblies are used for generating certain temperature. And the temperature generated by the temperature control assembly is adjustable. According to the fuel cell experiment device, the at least two temperature control assemblies are arranged on the first end plate, various temperature distribution conditions can be formed in the fuel cell by adjusting the temperature generated by the temperature control assemblies, and the generation and discharge conditions of liquid water in the fuel cell can be observed through the observation window under different temperature distribution conditions, so that the experiment efficiency is improved. Therefore, the fuel cell can be fully experimented and observed.

Description

Technical Field

[0001] The utility model relates to the field of fuel cells, in particular to a fuel cell experimental device. Background Art

[0002] When a fuel cell is operating, especially at high power, a reaction inside the fuel cell generates water, which condenses into liquid water inside the fuel cell. If the liquid water is not promptly discharged from the flow channel, it will cause flooding, affecting the normal operation of the fuel cell. To obtain information about the generation and discharge of liquid water for analysis and optimization of the fuel cell, related technologies have configured the fuel cell end plates with transparent or hollow structures for visualization, allowing for internal observation of the fuel cell. However, these technologies can only observe the normal operation of the fuel cell and cannot fully test and observe the fuel cell. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a fuel cell experimental device.

[0005] The fuel cell experimental device of the embodiment of the utility model comprises:

[0006] A first end plate and a temperature control component, wherein the first end plate is provided with an observation window, the temperature control component is provided on the first end plate, and there are at least two temperature control components, the temperature control component is used to generate a certain temperature, and the temperature generated by the temperature control component is adjustable.

[0007] The fuel cell experimental device of the embodiment of the present utility model is provided with at least two temperature control components on the first end plate. By adjusting the temperature generated by the temperature control components, a variety of temperature distribution conditions can be formed inside the fuel cell. Under different temperature distribution conditions, the generation and discharge of liquid water inside the fuel cell can be observed through the observation window, thereby enabling sufficient experimentation and observation of the fuel cell.

[0008] In some embodiments, the first end plate is used to connect to the first flow field plate, and the observation window is arranged opposite to the first flow field plate, the first flow field plate has a reaction medium inlet end and a reaction medium outlet end, the portion of the first end plate opposite to the reaction medium inlet end is provided with corresponding at least two of the temperature control components, and the portion of the first end plate opposite to the reaction medium outlet end is provided with corresponding at least two of the temperature control components.

[0009] In some embodiments, there are at least two observation windows, and the observation windows are arranged in a one-to-one correspondence with the temperature control components.

[0010] In some embodiments, the temperature control component is disposed in the corresponding observation window, and at least a portion of the temperature control component located on the observation path of the observation window is configured to be transparent.

[0011] In some embodiments, the temperature control component includes a medium container and a temperature sensor. The medium container is used to supply a temperature medium with a certain temperature and is colorless and transparent. At least the portion of the medium container located on the observation path of the observation window is set to be transparent. The temperature sensor is arranged in the medium container to obtain the temperature of the medium container.

[0012] In some embodiments, the fuel cell experimental device also includes a first sealing member, the side wall surface of the medium container is provided with an annular boss extending along its circumference, the side wall surface of the observation window is provided with an annular groove extending along its circumference, the annular boss is embedded in the annular groove, the first sealing member is provided between the annular boss and the annular groove, and is annular in shape extending along the circumference of the annular boss.

[0013] In some embodiments, the first end plate is provided with an embedding groove for embedding the first flow field plate, the observation window is connected to the embedding groove, the first end plate is further provided with a connected first reaction medium inlet and a first branch channel, and a connected first reaction medium outlet and a first confluence channel, the first branch channel and the first confluence channel are both provided on the groove wall of the embedding groove, and are used to connect the multiple first flow channels of the first flow field plate between the first branch channel and the first confluence channel.

[0014] In some embodiments, the fuel cell experimental device further includes a second seal, which is annular and disposed in the embedding groove, for connecting between the first end plate and the first flow field plate, and surrounding the outer circumference of the first branch channel, the first confluence channel, and the first flow channel.

[0015] In some embodiments, the fuel cell experimental device also includes a first insulating plate, a first flow field plate, a membrane electrode, a second flow field plate, a current collecting plate, a second insulating plate and a second end plate, the first insulating plate, the first end plate, the first flow field plate, the membrane electrode, the second flow field plate, the current collecting plate, the second insulating plate and the second end plate are arranged in sequence, the first insulating plate is provided with an observation port corresponding to the observation window, the first end plate has a first pole, the first flow field plate has a second pole, the second pole is overlapped with the first pole, and the current collecting plate has a third pole.

[0016] In some embodiments, the second flow field plate is provided with a second reaction medium inlet, a second branch channel, multiple second flow channels, a second confluence channel and a second reaction medium outlet which are connected in sequence. The multiple second flow channels are provided on the end surface of the second flow field plate and are arranged opposite to the membrane electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a fuel cell experimental device according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of a fuel cell experimental device according to an embodiment of the present invention;

[0019] Figure 3 is a top view of the first end plate in an embodiment of the present utility model;

[0020] Figure 4 is a bottom view of the first end plate in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic structural diagram of a medium container in an embodiment of the present utility model;

[0022] Figure 6 This is a schematic structural diagram of the first flow field plate in an embodiment of the present utility model;

[0023] Figure 7 It is a partial structural diagram of a fuel cell experimental device according to an embodiment of the present utility model.

[0024] Reference numerals:

[0025] 1. First end plate; 11. Observation window; 12. Annular groove; 13. Embedded groove; 14. First reaction medium inlet; 15. First branch channel; 16. First reaction medium outlet; 17. First confluence channel; 18. First pole; 19. Positioning column;

[0026] 2. Temperature control assembly; 21. Medium container; 211. Container body; 212. Container cover; 213. Mounting hole; 214. Temperature medium inlet; 215. Temperature medium outlet; 22. Annular boss;

[0027] 3. First flow field plate; 31. First flow channel; 32. Second pole; 33. Positioning hole;

[0028] 4. First sealing member;

[0029] 5. Second sealing member;

[0030] 6. First insulating plate; 61. Observation port;

[0031] 7. Membrane electrode;

[0032] 8. Second flow field plate; 81. Second reaction medium inlet; 82. Second flow channel; 83. Second reaction medium outlet;

[0033] 9. Current collecting plate; 91. Third pole;

[0034] 10. Second insulating plate;

[0035] 20. Second end plate. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figure 1-Figure 7 As shown, the fuel cell experimental device according to the embodiment of the present invention includes a first end plate 1 and a temperature control assembly 2 .

[0038] The first end plate 1 is provided with an observation window 11 , and the temperature control assembly 2 is provided on the first end plate 1 , and there are at least two temperature control assemblies 2 . The temperature control assembly 2 is used to generate a certain temperature, and the temperature generated by the temperature control assembly 2 is adjustable.

[0039] Specifically, such as Figure 1 and Figure 2 As shown, the first end plate 1 is arranged horizontally and is provided with an observation window 11 arranged in the vertical direction. It should be noted that the first end plate 1 can be provided with a channel running through it in the vertical direction to form the observation window 11, or the portion of the first end plate 1 extending in the vertical direction can be set to be transparent to form the observation window 11, or the entire first end plate 1 can be set to be projected to form the observation window 11. The first end plate 1 is also provided with at least two temperature control components 2, which are used to generate a certain temperature, and the temperature generated by the temperature control components 2 is adjustable.

[0040] The fuel cell experimental device of the embodiment of the present utility model is provided with at least two temperature control components on the first end plate. By adjusting the temperature generated by the temperature control components, a variety of temperature distribution conditions can be formed inside the fuel cell. Under different temperature distribution conditions, the generation and discharge of liquid water inside the fuel cell can be observed through the observation window, thereby enabling sufficient experimentation and observation of the fuel cell.

[0041] In some embodiments, the first end plate 1 is used to connect to the first flow field plate 3, and the observation window 11 is arranged opposite to the first flow field plate 3. The first flow field plate 3 has a reaction medium inlet end and a reaction medium outlet end. The portion of the first end plate 1 opposite to the reaction medium inlet end is provided with corresponding at least two temperature control components 2, and the portion of the first end plate 1 opposite to the reaction medium outlet end is provided with corresponding at least two temperature control components 2.

[0042] like Figure 2 As shown, the bottom of the first end plate 1 is connected to the horizontally arranged first flow field plate 3 , and the observation window 11 is arranged opposite to the first flow field plate 3 so that the first flow field plate 3 can be observed through the observation window 11 .

[0043] The first flow field plate 3 has a reaction medium inlet end and a reaction medium outlet end arranged opposite to each other in the left and right directions. The reaction medium flows from the reaction medium inlet end to the reaction medium outlet end. Preferably, the left end of the first flow field plate 3 is the reaction medium inlet end, and the right end is the reaction medium outlet end.

[0044] At least two corresponding temperature control assemblies 2 are provided at the portion of the first end plate 1 opposite the reaction medium inlet. Specifically, at least two, preferably two, temperature control assemblies 2 are provided at the left end of the first end plate 1, spaced apart in the front-to-back direction. The temperature distribution at the reaction medium inlet is adjusted by the two temperature control assemblies 2.

[0045] At least two corresponding temperature control assemblies 2 are provided at the portion of the first end plate 1 opposite the reaction medium outlet. Specifically, at least two, preferably two, temperature control assemblies 2 are provided at the left end of the first end plate 1, spaced apart in the front-to-back direction. The temperature distribution at the reaction medium outlet is adjusted by the two temperature control assemblies 2.

[0046] Different temperature distributions can be formed by adjusting the temperatures of the four temperature control components 2 , so as to observe the generation and discharge of liquid water on the first flow field plate 3 under different temperature distributions.

[0047] Specifically, the temperature control component 2 located on the front left side is marked as the first temperature control component 2, the temperature control component 2 located on the rear left side is marked as the second temperature control component 2, the temperature control component 2 located on the front right side is marked as the third temperature control component 2, and the temperature control component 2 located on the rear right side is marked as the fourth temperature control component 2.

[0048] When the temperature of the first temperature control component 2 is the same as that of the second temperature control component 2, the temperature of the third temperature control component 2 is the same as that of the fourth temperature control component 2, and the temperature of the first temperature control component 2 is greater than or less than that of the third temperature control component 2, the generation and discharge of liquid water when there is a temperature difference between the reaction medium inlet end and the reaction medium outlet end can be observed.

[0049] When the temperature of the first temperature control component 2 is the same as that of the third temperature control component 2, the temperature of the second temperature control component 2 is the same as that of the fourth temperature control component 2, and the temperature of the first temperature control component 2 is greater than or less than that of the second temperature control component 2, the generation and discharge of liquid water when the temperature distribution at the inlet end of the reaction medium and the temperature distribution at the outlet end of the reaction medium are uneven can be observed.

[0050] When the temperatures of any two of the first temperature control component 2, the second temperature control component 2, the third temperature control component 2 and the fourth temperature control component 2 have a temperature difference, the generation and discharge of liquid water when the overall temperature distribution in the reaction active area of ​​the first flow field plate 3 is uneven can be observed.

[0051] It is understandable that the temperature distribution formed by the four temperature control components 2 is not limited to the above three situations.

[0052] It can be understood that the temperature control components are not limited to being arranged relative to the reaction medium inlet end and the reaction medium outlet end, and the temperature control components arranged relative to the reaction medium inlet end and the reaction medium outlet end are not limited to two. In other embodiments, the position and number of the temperature control components are set according to the reaction active area of ​​the first flow field plate. For example, the area between the reaction medium inlet end and the reaction medium outlet end is also provided with a relatively arranged temperature control component. There can be three or more temperature control components.

[0053] In some embodiments, there are at least two observation windows 11 , and the observation windows 11 are arranged in a one-to-one correspondence with the temperature control components 2 .

[0054] like Figure 1-Figure 4 As shown, the first end plate 1 is provided with four observation windows 11, and the four observation windows 11 are arranged in one-to-one correspondence with the four temperature control components 2, so that the area where the first flow field plate 3 and the corresponding temperature control component 2 are relatively arranged can be observed through the observation windows 11, so as to obtain the liquid water generation and discharge conditions of the relatively arranged area under the influence of the temperature of the corresponding temperature control component 2, and perform comparison.

[0055] It is understandable that the observation windows are not limited to being set in a one-to-one correspondence with the temperature control components. In other embodiments, all temperature control components are set in correspondence with the same observation window, or each observation window is set in correspondence with at least two temperature control components.

[0056] In some embodiments, the temperature control component 2 is disposed in the corresponding observation window 11 , and at least a portion of the temperature control component 2 located on the observation path of the observation window 11 is configured to be transparent.

[0057] like Figure 1-Figure 4 As shown, the first end plate 1 is provided with a channel running through it in the vertical direction to form an observation window 11, and the temperature control components 2 are provided in the observation window 11 one by one. The observation path of the observation window 11 is in the up and down direction, and at least part or all of the temperature control components 2 in the up and down direction are set to be transparent, so that the generation and discharge of liquid water in the first flow field plate 3 can be observed through the transparent part of the temperature control component 2.

[0058] Providing the temperature control component 2 in the observation window 11 can reduce the difficulty of processing, installing and sealing the fuel cell experimental device.

[0059] It is understandable that the temperature control component is not limited to being located in the observation window. In other embodiments, the temperature control component is embedded in the bottom surface of the first end plate and arranged side by side with the corresponding observation window. In this case, a transparent plate is provided in the observation window to close the observation window.

[0060] In some embodiments, the temperature control component 2 includes a medium container 21 and a temperature sensor. The medium container 21 is used to supply a temperature medium with a certain temperature and is colorless and transparent. At least the portion of the medium container 21 located on the observation path of the observation window 11 is set to be transparent. The temperature sensor is provided in the medium container 21 to obtain the temperature of the medium container 21.

[0061] like Figure 1-Figure 5 As shown, the temperature control component 2 includes a medium container 21 and a temperature sensor (not shown in the figure). The medium container 21 is arranged in the corresponding observation window 11. The medium container 21 is used to supply a temperature medium with a certain temperature and is colorless and transparent. At least part or all of the medium container 21 along the upper and lower directions is set to be transparent, so that the generation and discharge of liquid water in the first flow field plate 3 can be observed through the transparent part of the medium container 21 and the colorless and transparent temperature medium.

[0062] A temperature sensor is provided on the wall of the medium container 21, and the temperature sensor is used to obtain the temperature of the medium container 21. The temperature sensor is preferably a thermocouple.

[0063] Specifically, such as Figure 5 As shown, the medium container 21 includes a container body 211 and a container cover 212. The container body 211 fits within the corresponding observation window 11. Preferably, the cross-sections of the observation window 11 and the container body 211 are both rectangular. The container body 211 has an inner cavity with an opening at the top for accommodating a colorless and transparent temperature medium. The top surface of the container body 211 is provided with a plurality of mounting holes 213, which are arranged at intervals around the inner cavity of the container body 211. Temperature sensors are disposed in corresponding mounting holes 213 to obtain the temperature of the medium container 21.

[0064] The container cover 212 is detachably connected to the top of the container body 211, preferably connected by bolts and bonded, so as to close and open the opening at the top of the container body 211. The container cover 212 is provided with a temperature medium inlet 214 and a temperature medium outlet 215 connected to the inner cavity of the container body 211. The temperature medium inlet 214 and the temperature medium outlet 215 are connected to the temperature medium supply equipment through pipelines. After the temperature medium is heated or cooled to a specified temperature in the temperature medium supply equipment, it is supplied into the inner cavity of the container body 211 through the temperature medium inlet 214, and then discharged from the temperature medium outlet 215 and refluxed to the temperature medium supply equipment, and the temperature medium is circulated, thereby ensuring that the medium container 21 is always maintained at the specified temperature.

[0065] The temperature sensor is electrically connected to the terminal and the temperature medium supply device. The temperature sensor feeds back the acquired temperature to the terminal for further display and recording. At the same time, the temperature medium supply device is adjusted according to the fed-back temperature, so that the temperature medium supply device heats or cools the temperature medium to the specified temperature and can adjust the temperature of the temperature medium.

[0066] The temperature sensor can be disassembled and assembled through the mounting hole 213 after the container cover 212 is opened, or a through hole corresponding to and connected to the mounting hole 213 can be provided in the container cover 212 to disassemble and assemble the temperature sensor through the through hole. It is preferred to provide a through hole in the container cover 212.

[0067] The container body 211 and the container cover 212 can be set to be transparent as a whole, or the container cover 212 and the bottom of the container body 211 can be transparent. Preferably, the container body 211 and the container cover 212 are set to be transparent as a whole. The temperature medium is preferably water.

[0068] It is understandable that, in other embodiments, the temperature sensor may also be disposed in the inner cavity of the container body 211 .

[0069] It is understood that the structure of the temperature control component is not limited to Figure 5 In the structure shown, in other embodiments, the temperature control component is an electric heating device, such as a heating plate or a heating wire.

[0070] In some embodiments, the fuel cell experimental device of the embodiment of the present invention also includes a first seal 4, the side wall surface of the medium container 21 is provided with an annular boss 22 extending along its circumference, and the side wall surface of the observation window 11 is provided with an annular groove 12 extending along its circumference. The annular boss 22 is embedded in the annular groove 12, and the first seal 4 is arranged between the annular boss 22 and the annular groove 12, and is a ring extending along the circumference of the annular boss 22.

[0071] like Figure 3 and Figure 5 As shown, the side wall surface of the top end of the container body 211 is provided with an annular boss 22 extending along its circumference, the top surface of the annular boss 22 is flush with the top surface of the container body 211, and the container cover 212 is also provided on the top surface of the annular boss 22 and the top surface of the container body 211.

[0072] The side wall surface of the top end of the observation window 11 is provided with an annular groove 12 extending along its circumference. The first seal 4 is fitted in the lower end surface of the annular groove 12. The annular boss 22 is embedded in the annular groove 12 and abuts against the first seal 4. In other words, the first seal 4 abuts between the lower end surface of the annular boss 22 and the lower end surface of the annular groove 12.

[0073] Preferably, the annular boss 22 , the annular groove 12 and the first sealing member 4 are all rectangular ring-shaped.

[0074] The first sealing member 4 seals and connects the observation window 11 to the temperature control assembly 2 to prevent the reaction medium from leaking between the observation window 11 and the temperature control assembly 2 .

[0075] In some embodiments, the fuel cell experimental device of the present invention further includes a first insulating plate 6 , which is disposed at one end of the first end plate 1 away from the first flow field plate 3 , and has an observation port 61 corresponding to the observation window 11 .

[0076] like Figure 1 and Figure 2 As shown, the first insulating plate 6 is stacked on top of the first flow field plate 3 and covers the first flow field plate 3. The first insulating plate 6 is provided with an observation port 61 which is arranged in a one-to-one correspondence with and connected to the observation window 11. Preferably, the entire or top of the container cover 212 is provided in the observation port 61, and the top surface of the container cover 212 is not higher than the top surface of the first insulating plate 6.

[0077] In some embodiments, the first end plate 1 is provided with an embedding groove 13 for embedding the first flow field plate 3, and the observation window 11 is connected to the embedding groove 13. The first end plate 1 is also provided with a connected first reaction medium inlet 14 and a first branch channel 15, as well as a connected first reaction medium outlet 16 and a first confluence channel 17. The first branch channel 15 and the first confluence channel 17 are both provided on the groove wall surface of the embedding groove 13, and are used to connect the multiple first flow channels 31 of the first flow field plate 3 between the first branch channel 15 and the first confluence channel 17.

[0078] like Figure 2 、 Figure 4 and Figure 6 As shown, the bottom surface of the first end plate 1 is provided with a recess 13, and the first flow field plate 3 is recessed in the recess 13. Preferably, the bottom surface of the first flow field plate 3 is flush with the bottom surface of the first end plate 1. An observation window 11 extends to the upper end surface of the recess 13 and communicates with the recess 13. The top surface of the first flow field plate 3 is provided with a plurality of first flow channels 31. The first flow channels 31 extend in the left-right direction and are arranged sequentially in the front-to-back direction. Thus, the first flow channels 31 of the first flow field plate 3 can be observed through the observation window 11 to obtain information on the generation and discharge of liquid water.

[0079] A first flow branch channel 15 and a first flow converging channel 17 are provided on the upper end surface of the embedding groove 13 . The first flow branch channel 15 and the first flow converging channel 17 both extend in the front-to-back direction and are arranged at intervals in the left-to-right direction.

[0080] The first branch channel 15 is located at the left end of the embedded groove 13, and the first branch channel 15 is located above the left ends of the multiple first channels 31 and is connected. The first confluence channel 17 is located at the right end of the embedded groove 13, and the first confluence channel 17 is located above the right ends of the multiple first channels 31 and is connected.

[0081] The left end surface of the embedding groove 13 is provided with two first reaction medium inlets 14 spaced apart in the front-to-back direction. The first reaction medium inlets 14 extend in the left-right direction to the left end surface of the first branch channel 15 and communicate with the first branch channel 15 .

[0082] The right end surface of the embedding groove 13 is provided with two first reaction medium outlets 16 spaced apart in the front-to-back direction. The first reaction medium outlets 16 extend in the left-right direction to the right end surface of the first confluence 17 and communicate with the first confluence 17 .

[0083] The reaction medium enters the first branch channel 15 from the first reaction medium inlet 14 , is branched into a plurality of first flow channels 31 through the first branch channel 15 , then converges at the first converging channel 17 , and is finally discharged from the first reaction medium outlet 16 .

[0084] Embedding the first flow field plate 3 in the bottom of the first end plate 1 can facilitate the installation and sealing of the first flow field plate 3 and the temperature control assembly 2, while ensuring that the generation and discharge of liquid water can be observed.

[0085] Furthermore, the first flow field plate 3 is provided with a plurality of positioning holes 33 arranged at intervals along its circumference, and the upper end surface of the embedding groove 13 is provided with a plurality of positioning posts 19 arranged at intervals along its circumference. The plurality of positioning posts 19 are inserted into the plurality of positioning holes 33 one by one to fix the position of the first flow field plate 3 and ensure the press-fitting effect.

[0086] It can be understood that the first flow field plate is not limited to being embedded in the bottom of the first end plate. In other embodiments, the first end plate and the first flow field plate are stacked from top to bottom.

[0087] In some embodiments, the fuel cell experimental device of the embodiment of the present invention also includes a second seal 5, which is annular and is arranged in the embedding groove 13, for connecting between the first end plate 1 and the first flow field plate 3, and surrounding the outer periphery of the first branch channel 15, the first confluence channel 17 and the first flow channel 31.

[0088] like Figure 2 and Figure 4 As shown, a second sealing member 5 is provided in the embedded groove 13. The second sealing member 5 is connected between the upper end surface of the embedded groove 13 and the upper end surface of the first flow field plate 3. The second sealing member 5 surrounds the outer periphery of the first branch channel 15, the first confluence channel 17, and all the first flow channels 31. The second sealing member 5 is preferably in the shape of a rectangular ring.

[0089] Preferably, a rectangular annular groove is provided on the upper end surface of the embedding groove 13, and the rectangular annular groove includes two first groove sections extending in the left-right direction and two second groove sections extending in the front-back direction. The second sealing member 5 seals the two first groove sections, so that the two second groove sections form a first branch channel 15 and a first confluence channel 17.

[0090] The second sealing member 5 seals and connects the first end plate 1 and the first flow field plate 3 to prevent leakage of the reaction medium.

[0091] It is understood that the first flow diversion channel and the first flow confluence channel are not limited to being formed by rectangular annular grooves. In other embodiments, the first flow diversion channel and the first flow confluence channel are independently provided. The first flow diversion channel and the first flow confluence channel are not limited to being provided on the upper end surface of the embedded groove. In other embodiments, the first flow diversion channel and the first flow confluence channel are provided on the sidewall surface of the embedded groove.

[0092] In some embodiments, the first end plate 1 has a first pole 18 , and the first flow field plate 3 has a second pole 32 . The second pole 32 overlaps the first pole 18 .

[0093] like Figures 1-6 As shown, the rear end face of the first end plate 1 is provided with a protruding first pole 18, and the rear end face of the first flow field plate 3 is provided with a protruding second pole 32. The second pole 32 extends from the embedded groove 13 to the rear end face of the first end plate 1 and overlaps the lower end of the first pole 18. The rear end face of the first insulating plate 6 is provided with a protrusion that overlaps and covers the upper end of the first pole 18. The first pole 18 and the second pole 32 are used to connect to the copper busbar respectively.

[0094] In some embodiments, the fuel cell experimental device of the embodiment of the present invention also includes a first flow field plate 3, a membrane electrode 7, a second flow field plate 8, a current collecting plate 9, a second insulating plate 10 and a second end plate 20. The first insulating plate 6, the first end plate 1, the first flow field plate 3, the membrane electrode 7, the second flow field plate 8, the current collecting plate 9, the second insulating plate 10 and the second end plate 20 are arranged in sequence, and the current collecting plate 9 has a third pole 91.

[0095] like Figure 1 、 Figure 2 and Figure 7 As shown, the first insulating plate 6 is stacked on the upper end of the first end plate 1, the first flow field plate 3 is embedded in the bottom of the first end plate 1, and the first end plate 1 with the first flow field plate 3 embedded is stacked together on the membrane electrode 7. The membrane electrode 7, the second flow field plate 8, the current collecting plate 9, the second insulating plate 10 and the second end plate 20 are stacked in sequence. The rear end face of the current collecting plate 9 is provided with a third pole 91 for connecting the copper busbar.

[0096] Furthermore, the first insulating plate 6, the first end plate 1, the membrane electrode 7, the second flow field plate 8, the current collecting plate 9, the second insulating plate 10 and the second end plate 20 are connected in sequence in the up and down directions by connectors that are preferably bolts. There are multiple connectors that are preferably bolts, and the multiple connectors that are preferably bolts are arranged at intervals along the circumference of the first insulating plate 6.

[0097] It is understood that the structure of the fuel cell experimental device is not limited to Figure 1 and Figure 2 In the structure shown in FIG. 1 , in other embodiments, a first flow field plate 3 , a first end plate 1 and a first insulating plate 6 are respectively provided at both ends of the membrane electrode 7 .

[0098] In some embodiments, the second flow field plate 8 is provided with a second reaction medium inlet 81, a second branch channel, multiple second flow channels 82, a second confluence channel and a second reaction medium outlet 83 which are connected in sequence. The multiple second flow channels 82 are provided on the end face of the second flow field plate 8 and are arranged opposite to the membrane electrode 7.

[0099] like Figure 7 As shown, the top surface of the second flow field plate 8 is provided with a second branch channel, a plurality of second flow channels 82 and a second confluence channel connected in sequence from left to right, wherein the second flow channel 82 extends in the left-right direction, and the plurality of second flow channels 82 are arranged in sequence in the front-to-back direction and connected in parallel between the second branch channel and the second confluence channel, and the second flow channel 82 is arranged opposite to the membrane electrode 7.

[0100] The left end face of the second flow field plate 8 is provided with a second reaction medium inlet 81 connected to the second branch channel, and the second reaction medium inlets 81 are preferably at least two arranged at intervals along the front-to-back direction. The right end face of the second flow field plate 8 is provided with a second reaction medium outlet 83 connected to the second confluence channel, and the second reaction medium outlet 83 are preferably at least two arranged at intervals along the front-to-back direction.

[0101] The reaction gas enters the second branch channel through the second reaction medium inlet 81, is branched into multiple second flow channels 82 through the second branch channel, and then converges into the second converging channel and is discharged through the second reaction medium outlet 83. It should be noted that the reaction media flowing through the first flow field plate 3 and the second flow field plate 8 are different.

[0102] The fuel cell experimental device of the embodiment of the present utility model is used to observe the generation and discharge of liquid water therein, especially the generation and discharge of liquid water in the first flow field plate 3. On the one hand, the structure of the first flow field plate 3 can be optimized according to the obtained conditions to obtain the optimal flow channel structure. On the other hand, the operating temperature parameter range of the fuel cell can be optimized according to the obtained conditions to avoid flooding.

[0103] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0104] Furthermore, the terms "first" and "second" are used solely for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0105] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0106] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0107] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0108] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fuel cell experimental device, characterized in that: include: A first end plate (1) and a temperature control component (2), wherein the first end plate (1) is provided with an observation window (11), the temperature control component (2) is provided on the first end plate (1), and there are at least two temperature control components (2), the temperature control components (2) are used to generate a certain temperature, and the temperature generated by the temperature control components (2) is adjustable.

2. The fuel cell experimental device according to claim 1, characterized in that: The first end plate (1) is used to connect to the first flow field plate (3), and the observation window (11) is arranged opposite to the first flow field plate (3). The first flow field plate (3) has a reaction medium inlet end and a reaction medium outlet end. The portion of the first end plate (1) arranged opposite to the reaction medium inlet end is provided with corresponding at least two of the temperature control components (2), and the portion of the first end plate (1) arranged opposite to the reaction medium outlet end is provided with corresponding at least two of the temperature control components (2).

3. The fuel cell experimental device according to claim 1, characterized in that: There are at least two observation windows (11), and the observation windows (11) are arranged in a one-to-one correspondence with the temperature control components (2).

4. The fuel cell experimental device according to claim 3, characterized in that: The temperature control component (2) is arranged in the corresponding observation window (11), and at least the portion of the temperature control component (2) located on the observation path of the observation window (11) is configured to be transparent.

5. The fuel cell experimental device according to claim 4, characterized in that: The temperature control component (2) comprises a medium container (21) and a temperature sensor. The medium container (21) is used to supply a temperature medium having a certain temperature and being colorless and transparent. At least a portion of the medium container (21) located on the observation path of the observation window (11) is configured to be transparent. The temperature sensor is provided in the medium container (21) to obtain the temperature of the medium container (21).

6. The fuel cell experimental device according to claim 5, characterized in that: The invention also includes a first sealing member (4), wherein the side wall surface of the medium container (21) is provided with an annular boss (22) extending along the circumference thereof, and the side wall surface of the observation window (11) is provided with an annular groove (12) extending along the circumference thereof, and the annular boss (22) is embedded in the annular groove (12). The first sealing member (4) is provided between the annular boss (22) and the annular groove (12) and is annular and extends along the circumference of the annular boss (22).

7. The fuel cell experimental device according to any one of claims 1 to 6, characterized in that: The first end plate (1) is provided with an embedding groove (13) for embedding the first flow field plate (3), and the observation window (11) is connected to the embedding groove (13). The first end plate (1) is also provided with a first reaction medium inlet (14) and a first branch channel (15) that are connected, and a first reaction medium outlet (16) and a first confluence channel (17) that are connected. The first branch channel (15) and the first confluence channel (17) are both provided on the groove wall surface of the embedding groove (13) and are used to connect the multiple first flow channels (31) of the first flow field plate (3) between the first branch channel (15) and the first confluence channel (17).

8. The fuel cell experimental device according to claim 7, characterized in that: The second sealing member (5) is annular and is arranged in the embedding groove (13), and is used to be connected between the first end plate (1) and the first flow field plate (3), and surrounds the outer periphery of the first branch channel (15), the first confluence channel (17) and the first flow channel (31).

9. The fuel cell experimental device according to claim 7, characterized in that: The invention also includes a first insulating plate (6), a first flow field plate (3), a membrane electrode (7), a second flow field plate (8), a current collecting plate (9), a second insulating plate (10) and a second end plate (20); the first insulating plate (6), the first end plate (1), the first flow field plate (3), the membrane electrode (7), the second flow field plate (8), the current collecting plate (9), the second insulating plate (10) and the second end plate (20) are arranged in sequence; the first insulating plate (6) is provided with an observation port (61) arranged corresponding to the observation window (11); the first end plate (1) has a first pole (18); the first flow field plate (3) has a second pole (32); the second pole (32) is overlapped with the first pole (18); and the current collecting plate (9) has a third pole (91).

10. The fuel cell experimental device according to claim 9, characterized in that: The second flow field plate (8) is provided with a second reaction medium inlet (81), a second branch channel, a plurality of second flow channels (82), a second confluence channel and a second reaction medium outlet (83) which are connected in sequence. The plurality of second flow channels (82) are provided on the end surface of the second flow field plate (8) and are arranged opposite to the membrane electrode (7).

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