Visual device for proton exchange membrane electrolytic cell

Abstract

The utility model discloses a visualization device for a proton exchange membrane electrolytic bath, and belongs to the technical field of proton exchange membrane electrolytic baths. The proton exchange membrane electrolytic cell visualization device comprises an anode flow field plate, a membrane electrode and a cathode flow field plate which are sequentially connected in the first direction, the anode flow field plate is provided with a first hollow flow channel, the cathode flow field plate is provided with a second hollow flow channel, and the proton exchange membrane electrolytic cell visualization device further comprises an anode end plate and a cathode end plate which are provided with inlets and outlets. The inlet and the outlet are respectively communicated with the first hollow flow channel and the second hollow flow channel; the cathode end plate is attached to the anode end plate, and the anode end plate and the cathode end plate are both made of transparent materials. The first hollow flow channel and the second hollow flow channel to be observed are respectively arranged on the anode flow field plate and the cathode flow field plate which are made of transparent materials, so that the visual range is enlarged as much as possible, and the motion state of gas and liquid can be quickly and efficiently observed by utilizing the cathode end plate and the anode end plate.

Description

Technical Field

[0001] The present application belongs to the technical field of proton exchange membrane electrolyzers, and in particular, relates to a proton exchange membrane electrolyzer visualization device. Background Art

[0002] The proton exchange membrane electrolyzer is a device that uses electrical energy to decompose water into hydrogen and oxygen. The electrolyzer includes a proton exchange membrane, an anode flow field plate, and a cathode flow field plate. That is, water molecules are decomposed into hydrogen protons and hydroxide ions through the proton exchange membrane, which helps to reduce the cost of electrolysis and increase the performance of electrolysis. However, the visualization device currently used to test the flow field structure of the flow field plate cannot observe the flow field structure over a large area, making it difficult to reflect the movement state of gas and liquid in the actual electrolysis of water, affecting the design cycle and efficiency of the flow field structure. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a proton exchange membrane electrolyzer visualization device, which uses an anode flow field plate and a cathode flow field plate made of transparent material to respectively set a first hollow flow channel to be observed and a second hollow flow channel to increase the visual range as much as possible, and uses a cathode end plate and an anode end plate to realize the observation of various anode flow field plates and cathode flow field plates, which has wide adaptability and can quickly and efficiently observe the movement state of gas and liquid.

[0004] In a first aspect, the present application provides a proton exchange membrane electrolyzer visualization device, comprising an anode flow field plate, a membrane electrode and a cathode flow field plate connected in sequence along a first direction, wherein the anode flow field plate has a first hollow flow channel, and the cathode flow field plate has a second hollow flow channel. The proton exchange membrane electrolyzer visualization device also includes:

[0005] an anode end plate having an inlet and an outlet, the inlet and the outlet are respectively connected to the first hollow flow channel and the second hollow flow channel, the anode end plate is used to observe the flow direction of gas and liquid and the generation of gas through the first hollow flow channel;

[0006] The cathode end plate is bonded to the anode end plate, and the cathode end plate is used to observe the flow direction of the gas through the second hollow flow channel, wherein the anode end plate and the cathode end plate are both made of transparent materials.

[0007] According to the proton exchange membrane electrolyzer visualization device of the present application, the first hollow flow channel and the second hollow flow channel to be observed are respectively arranged on the anode flow field plate and the cathode flow field plate to increase the visual range as much as possible, and the cathode end plate and the anode end plate made of transparent material are used to observe the flow direction and movement state of the gas and liquid in the first hollow flow channel and the second hollow flow channel respectively. It is not only widely adaptable, but also can realize the fast and efficient observation of the movement state of the gas and liquid, and provide a basis for the design of the flow channels (including the first hollow flow channel and the second hollow flow channel) on the cathode flow field plate and the anode flow field plate. In addition, since only the anode end plate has an inlet and outlet, it can not only more accurately simulate the actual process of water electrolysis, but also cooperate with the bonding of the anode end plate and the cathode end plate to ensure that the structure of the entire proton exchange membrane electrolyzer visualization device is as compact as possible.

[0008] According to an embodiment of the present application, the first surface of the anode flow field plate has a water inlet and outlet area, and the water inlet and outlet area is provided with a plurality of first through holes and a plurality of first grooves arranged at intervals along the second direction, each of the first through holes is connected to the inlet and outlet, and the first grooves correspond to and are connected to the first through holes one by one;

[0009] The second surface of the anode flow field plate has a first flow field area, and the first flow field area is provided with a plurality of second grooves and a plurality of first through grooves arranged at intervals along the second direction, each of the second grooves corresponds to and is connected with the first through hole one by one, and each of the first through grooves corresponds to the second groove one by one and is connected with an end of the second groove away from the first through hole; wherein, the first hollow flow channel includes the first groove, the first through hole, the second groove and the first through groove.

[0010] According to one embodiment of the present application, the first flow field area includes a first transition zone and a first reaction zone, the second groove is arranged in the first transition zone, the first reaction zone is provided with a first receiving groove, and the first through groove is arranged at the bottom of the first receiving groove.

[0011] According to one embodiment of the present application, the first flow field area is further provided with a plurality of first reinforcement blocks, at least one of the first reinforcement blocks is arranged in the first through groove, and the thickness of the first reinforcement block along the first direction is less than the depth of the first through groove along the first direction.

[0012] According to an embodiment of the present application, the first surface of the cathode flow field plate has a gas outlet area, and the gas outlet area is provided with a plurality of second through holes and a plurality of third grooves arranged at intervals along the second direction, each of the second through holes is connected to the inlet and outlet, and the third grooves correspond to and are connected to the second through holes one by one;

[0013] The second surface of the cathode flow field plate has a second flow field area, and the second flow field area is provided with a plurality of fourth grooves and a plurality of second through grooves arranged at intervals along the second direction, each of the fourth grooves corresponds to and is connected with the second through hole one by one, and each of the second through grooves corresponds to the fourth groove one by one and is connected with an end of the fourth groove away from the second through hole; wherein, the second hollow flow channel includes the third groove, the second through hole, the fourth groove and the second through groove.

[0014] According to one embodiment of the present application, the second flow field area includes a second transition zone and a second reaction zone, the fourth groove is arranged in the second transition zone, the second reaction zone is provided with a second receiving groove, and the second through groove is arranged at the bottom of the second receiving groove.

[0015] According to one embodiment of the present application, the second flow field area is further provided with a plurality of second reinforcement blocks, at least one of the second reinforcement blocks is arranged in the second through groove, and the thickness of the second reinforcement block along the first direction is less than the depth of the second through groove along the second direction.

[0016] According to an embodiment of the present application, two water inlet and outlet areas are provided, and the two water inlet and outlet areas are arranged diagonally; and / or

[0017] There are two air outlet areas, and the two water inlet and outlet areas are arranged diagonally.

[0018] According to one embodiment of the present application, it also includes:

[0019] A first pressure contact plate, connected to the anode end plate and located at a side of the anode end plate away from the cathode end plate;

[0020] The second pressure contact plate is connected to the cathode end plate and is located on a side of the cathode end plate away from the anode end plate; wherein the surfaces of the first pressure contact plate and the second pressure contact plate along the first direction are both provided with at least one observation through hole.

[0021] According to one embodiment of the present application, it also includes:

[0022] A first seal, wherein a first seal is provided between the anode flow field plate and the anode end plate and between the anode flow field plate and the membrane electrode;

[0023] A second sealing member is provided between the cathode flow field plate and the cathode end plate and between the cathode flow field plate and the membrane electrode.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 This is one of the structural schematic diagrams of the proton exchange membrane electrolyzer visualization device provided in the embodiments of the present application;

[0027] Figure 2 This is the second structural schematic diagram of the proton exchange membrane electrolyzer visualization device provided in the embodiment of the present application;

[0028] Figure 3 It is one of the structural schematic diagrams of the anode end plate provided in the embodiment of the present application;

[0029] Figure 4 This is the second structural schematic diagram of the anode terminal plate provided in the embodiment of the present application;

[0030] Figure 5 It is one of the structural schematic diagrams of the cathode end plate provided in the embodiment of the present application;

[0031] Figure 6 This is the second structural schematic diagram of the cathode end plate provided in the embodiment of the present application;

[0032] Figure 7 This is one of the structural schematic diagrams of the anode flow field plate provided in the embodiment of the present application;

[0033] Figure 8 yes Figure 7 A partial enlarged view of the middle A;

[0034] Fig. 9 This is the second structural schematic diagram of the anode flow field plate provided in the embodiment of the present application;

[0035] Fig.10 yes Fig. 9 A partial enlarged view of point B in the middle;

[0036] Fig.11 This is one of the structural schematic diagrams of the cathode flow field plate provided in the embodiment of the present application;

[0037] Fig.12 yes Fig.11 A partial enlarged view of point C in the middle;

[0038] Fig.13 This is the second structural schematic diagram of the cathode flow field plate provided in the embodiment of the present application;

[0039] Fig.14 yes Fig.13 A partial enlarged view of point D in the middle.

[0040] Reference numerals:

[0041] 100, anode flow field plate; 101, third avoidance groove; 102, fourth avoidance groove; 103, avoidance port;

[0042] 110, water inlet and outlet area; 111, first through hole; 112, first groove; 113, first wiring area;

[0043] 120, first flow field area; 121, first transition area; 1211, second groove; 122, first reaction area; 1221, bottom of first accommodating groove; 1222, first through groove; 1223, first reinforcing block;

[0044] 200, membrane electrode; 210, anode porous transport layer; 220, proton exchange membrane; 230, cathode gas diffusion layer;

[0045] 300, cathode flow field plate; 301, fifth avoidance groove; 302, sixth avoidance groove;

[0046] 310, air outlet area; 311, second through hole; 312, third groove; 313, second wiring area;

[0047] 320, second flow field area; 321, second transition area; 3211, fourth groove; 322, second reaction area; 3221, bottom of second accommodating groove; 3222, second through groove; 3223, second reinforcing block;

[0048] 400, anode end plate; 401, liquid inlet; 402, gas and liquid outlet; 403, gas outlet; 404, first avoidance groove; 405, first weight reduction groove; 410, third positioning through hole;

[0049] 500, cathode end plate; 501, second avoidance groove; 502, second weight reduction groove; 510, fourth positioning through hole;

[0050] 601, observation through hole; 610, first pressure contact plate; 611, first positioning through hole; 620, second pressure contact plate; 621, second positioning through hole;

[0051] 710, first sealing member; 720, second sealing member. DETAILED DESCRIPTION

[0052] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0053] Reference below Figure 1-Figure 14 A proton exchange membrane electrolyzer visualization device provided in an embodiment of the present application is described, wherein the proton exchange membrane electrolyzer visualization device comprises an anode flow field plate 100, a membrane electrode 200, and a cathode flow field plate 300 sequentially connected along a first direction.

[0054] The anode flow field plate 100 has a first hollow flow channel. It can be understood that after the liquid (such as water) flows into the first hollow flow channel, it reacts with the membrane electrode 200 to form oxygen and hydrogen protons. The material of the anode flow field plate 100 includes but is not limited to titanium and stainless steel, as long as the anode flow field plate 100 has conductive properties. It should be noted that the size and thickness of the anode flow field plate 100 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0055] The cathode flow field plate 300 has a second hollow channel. It is understood that hydrogen protons flow through the membrane electrode 200 and flow into the second hollow channel to react and form hydrogen. The material of the cathode flow field plate 300 includes but is not limited to titanium and stainless steel, as long as the cathode flow field plate 300 has conductive properties.

[0056] It should be noted that the size and thickness of the cathode flow field plate 300 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this. The membrane electrode 200 includes a proton exchange membrane 220 and an anode porous transport layer 210 and a cathode gas diffusion layer 230 respectively arranged on both sides of the proton exchange membrane 220 along a first direction. That is, after water flows into the first hollow flow channel, oxygen is precipitated from the anode porous transport layer 210, and hydrogen protons pass through the proton exchange membrane 220 and precipitate hydrogen from the cathode gas diffusion layer 230.

[0057] In order to facilitate observation of the flow directions of gas and liquid in the first hollow channel and the second hollow channel respectively, the proton exchange membrane electrolyzer visualization device also includes an anode end plate 400 and a cathode end plate 500 connected to each other, and the anode end plate 400 and the cathode end plate 500 are both made of transparent materials.

[0058] The anode end plate 400 has an inlet and an outlet, which are respectively connected to the first hollow channel and the second hollow channel, and the anode end plate 400 is provided with a first avoidance groove 404 for accommodating the anode flow field plate 100, and the anode end plate 400 is used to observe the flow direction of gas and liquid and the generation of gas through the first hollow channel. The anode end plate 400 is made of a transparent insulating material with a certain strength so that the movement state of the liquid and gas on the anode flow field plate 100 can be clearly observed, and the anode end plate 400 includes but is not limited to a glass plate or an acrylic plate.

[0059] In this embodiment, the anode end plate 400 is provided with a first avoidance groove 404 for accommodating the anode flow field plate 100. It should be noted that the size and shape of the first avoidance groove 404 can be designed according to the anode flow field plate 100, and this embodiment does not impose any specific limitation on this.

[0060] It should be noted that the inlet and outlet include a liquid inlet 401, a gas-liquid outlet 402 and at least one gas outlet 403. It is understandable that the liquid inlet 401 is used to flow in liquid (water) so that the liquid flows to the first hollow channel through the liquid inlet 401; the gas-liquid outlet 402 is used to flow out gas (oxygen) and liquid so that the gas-liquid mixture after the reaction with the membrane electrode 200 flows out; the gas outlet 403 is used to flow out gas (hydrogen) so that the gas formed after the reaction with the membrane electrode 200 flows out. It should be noted that the distribution of the liquid inlet 401, the gas-liquid outlet 402 and the gas outlet 403 can be adjusted according to the specific shapes of the first hollow channel and the second hollow channel, and this embodiment does not impose specific restrictions on this.

[0061] In this embodiment, two air outlets 403 are provided, and the liquid inlet 401 and the air-liquid outlet 402 are diagonally arranged. The two air outlets 403 are diagonally arranged, and the air outlet 403 is connected to the second hollow flow channel. The liquid inlet 401 and the air-liquid outlet 402 are both connected to the first hollow flow channel. It should be noted that since the cathode end plate 500 is not provided with an outlet for hydrogen flow outflow, only the anode end plate 400 is provided with an outlet 403, and the projection contours of the anode flow field plate 100 and the cathode flow field plate 300 along the first direction coincide with each other, the anode flow field plate 100 is provided with a avoidance port 103 corresponding to the outlet, and the avoidance port 103 is not connected to the first hollow flow channel. Therefore, when the hydrogen protons react with the membrane electrode 200 to produce hydrogen, the projection part of the second hollow flow channel along the first direction coincides with the avoidance port 103, that is, the hydrogen flows out from the second hollow flow channel through the avoidance port 103 and then from the outlet 403, so as to realize the connection between the outlet 403 and the second hollow flow channel.

[0062] The cathode end plate 500 and the anode end plate 400 are bonded, and the cathode end plate 500 is used to observe the flow direction of the gas through the second hollow flow channel. The cathode end plate 500 is made of a transparent insulating material with a certain strength so that the movement state of the gas on the cathode flow field plate 300 can be clearly observed. The cathode end plate 500 includes but is not limited to a glass plate or an acrylic plate. The connection method between the anode end plate 400 and the cathode end plate 500 includes but is not limited to a threaded connection.

[0063] In this embodiment, the cathode end plate 500 is provided with a second avoidance groove 501 for accommodating the cathode flow field plate 300. It should be noted that the size and shape of the second avoidance groove 501 can be designed according to the cathode flow field plate 300, and this embodiment does not impose any specific restrictions on this.

[0064] It should be noted that, since the cathode end plate 500 and the anode end plate 400 are bonded, that is, the first avoidance groove 404 is opened on the side of the anode end plate 400 close to the cathode end plate 500, and the second avoidance groove 501 is opened on the side of the cathode end plate 500 close to the anode end plate 400, when the two are bonded, the first avoidance groove 404 and the second avoidance groove 501 are spliced ​​to form a accommodating space, and the accommodating space is used to accommodate the anode flow field plate 100, the membrane electrode 200 and the cathode flow field plate 300 to ensure that the three are closely attached to improve the electrolysis effect.

[0065] It can be understood that by respectively setting the first hollow flow channel and the second hollow flow channel to be observed on the anode flow field plate 100 and the cathode flow field plate 300 to increase the visible range as much as possible, and using the cathode end plate 500 and the anode end plate 400 to respectively observe the flow direction and movement state of the gas and liquid in the first hollow flow channel and the second hollow flow channel, it is not only widely adaptable, but also can realize the fast and efficient observation of the movement state of the gas and liquid, and provide a basis for the design of the flow channels (including the first hollow flow channel and the second hollow flow channel) on the cathode flow field plate 300 and the anode flow field plate 100. In addition, since only the anode end plate 400 has an inlet and outlet, it can not only more accurately simulate the actual process of water electrolysis, but also cooperate with the bonding of the anode end plate 400 and the cathode end plate 500 to ensure that the structure of the visualization device of the entire proton exchange membrane electrolyzer is as compact as possible.

[0066] According to the proton exchange membrane electrolyzer visualization device provided in the embodiment of the present application, a first hollow flow channel to be observed and a second hollow flow channel to be observed are respectively provided on the anode flow field plate 100 and the cathode flow field plate 300 to maximize the visible range, and a cathode end plate 500 and an anode end plate 400 made of transparent material are used to realize observation of various anode flow field plates 100 and cathode flow field plates 300. The device has wide adaptability and can quickly and efficiently observe the movement state of gas and liquid.

[0067] In some embodiments, Figure 1 , Figure 3 and Figure 5 As shown, a first weight-reducing groove 405 is provided on one side of the anode end plate 400 away from the cathode end plate 500, and a second weight-reducing groove 502 is provided on one side of the cathode end plate 500 away from the anode end plate 400, so as to reduce the amount of materials used as much as possible and reduce the manufacturing cost. It should be noted that the size, shape and number of the first weight-reducing groove 405 and the second weight-reducing groove 502 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0068] In some embodiments, Figure 1 and Figure 2As shown, the visualization device of the proton exchange membrane electrolyzer also includes a first pressure contact plate 610 and a second pressure contact plate 620. The first pressure contact plate 610 is connected to the anode end plate 400 and is located on the side of the anode end plate 400 away from the cathode end plate 500; the second pressure contact plate 620 is connected to the cathode end plate 500 and is located on the side of the cathode end plate 500 away from the anode end plate 400; wherein, the surfaces of the first pressure contact plate 610 and the second pressure contact plate 620 along the first direction are both provided with at least one observation through hole 601. It can be understood that the number, size and distribution of the observation through holes 601 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this. The materials of the first pressure contact plate 610 and the second pressure contact plate 620 include but are not limited to stainless steel, titanium alloy, plastic, etc.

[0069] In some embodiments, Figures 1 to 6 As shown, the first pressure contact plate 610 is provided with at least one first positioning through hole 611, the second pressure contact plate 620 is provided with at least one second positioning through hole 621, the anode terminal plate 400 is provided with a third positioning through hole 410, the cathode terminal plate 500 is provided with a fourth positioning through hole 510, and the positioning member is sequentially passed through the first positioning through hole 611, the third positioning through hole 410 and the fourth positioning through hole 510, so as to achieve accurate positioning between the first pressure contact plate 610, the anode terminal plate 400, the cathode terminal plate 500 and the second pressure contact plate 620 for stable installation. It should be noted that the number, distribution and shape of the first positioning through hole 611, the second positioning through hole 621, the third positioning through hole 410 and the fourth positioning through hole 510 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0070] In some embodiments, the proton exchange membrane electrolyzer visualization device further includes a plurality of fixings, one end of which passes through the first pressure contact plate 610, the anode end plate 400, and the cathode end plate 500 in sequence and is threadedly connected to the second pressure contact plate 620. The fixings include but are not limited to screws and bolts. It should be noted that the number and distribution of the fixings can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0071] In addition, since the first pressure contact plate 610 and the second pressure contact plate 620 are in most direct contact with the fixing part, they are subjected to the greatest force, which can ensure a close fit while reducing the force on the anode end plate 400 and the cathode end plate 500, thereby extending the service life of the anode end plate 400 and the cathode end plate 500.

[0072] In some embodiments, Figure 1 and Figure 2As shown, the proton exchange membrane electrolyzer visualization device also includes a first seal 710 and a second seal 720. The first seal 710 is provided between the anode flow field plate 100 and the anode end plate 400, and between the anode flow field plate 100 and the membrane electrode 200; the second seal 720 is provided between the cathode flow field plate 300 and the cathode end plate 500, and between the cathode flow field plate 300 and the membrane electrode 200.

[0073] It can be understood that by providing the first seal 710 on both sides of the anode flow field plate 100 along the first direction and the second seal 720 on both sides of the cathode flow field plate 300 along the first direction, the sealing performance of the entire proton exchange membrane electrolyzer visualization device is improved to avoid the possibility of leakage.

[0074] In some embodiments, Figures 7 to 10 As shown, the first surface of the anode flow field plate 100 has an inlet and outlet water area 110, and the inlet and outlet water area 110 is provided with a plurality of first through holes 111 and a plurality of first grooves 112 arranged at intervals along the second direction, each first through hole 111 is connected to the inlet and outlet, and the first grooves 112 and the first through holes 111 correspond to each other and are connected; the second surface of the anode flow field plate 100 has a first flow field area 120, and the first flow field area 120 is provided with a plurality of second grooves 1211 and a plurality of first through grooves 1222 arranged at intervals along the second direction, each second groove 1211 corresponds to each other and is connected to the first through hole 111, and each first through groove 1222 corresponds to the second groove 1211 one by one and is connected to the end of the second groove 1211 away from the first through hole 111; wherein, the first hollow flow channel includes the first groove 112, the first through hole 111, the second groove 1211 and the first through groove 1222.

[0075] It should be noted that the first surface of the anode flow field plate 100 is close to the anode end plate 400 , and the second surface of the anode flow field plate 100 is close to the cathode flow field plate 300 .

[0076] For ease of understanding, the “first direction” refers to the width direction of the anode flow field plate 100 , and the “second direction” refers to the height direction of the anode flow field plate 100 .

[0077] It can be understood that the first through hole 111 is connected to the inlet and outlet, so that the inlet and outlet are connected to the first hollow flow channel, and the first groove 112 and the second groove 1211 are used to guide the flow direction of the fluid (including at least one of gas and liquid), and the fluid is made to flow in the first through groove 1222 so as to be observed through the anode end plate 400. It should be noted that the shape and structure of the first through groove 1222 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0078] In some embodiments, Figure 7and Fig. 9 As shown, the first and second surfaces of the anode flow field plate 100 are both provided with third avoidance grooves 101 for avoiding the corresponding first seal 710 , and the water inlet and outlet areas 110 and the first flow field area 120 are respectively arranged at the bottom of the corresponding third avoidance grooves 101 .

[0079] In this embodiment, Fig. 9 As shown, a fourth avoidance groove 102 is further provided on the periphery of the second surface of the anode flow field plate 100 to avoid a short circuit between the anode flow field plate 100 and the cathode flow field plate 300 during the electrolysis of water.

[0080] In some embodiments, Fig. 9 As shown, the first flow field area 120 includes a first transition area 121 and a first reaction area 122, the second groove 1211 is arranged in the first transition area 121, the first reaction area 122 is provided with a first receiving groove, and the first through groove 1222 is arranged at the groove bottom 1221 of the first receiving groove.

[0081] It can be understood that the first receiving groove is used to accommodate the anode porous transport layer 210 to ensure that one side of the anode porous transport layer 210 along the first direction is tightly fitted with the groove bottom 1221 of the first receiving groove, ensuring that the fluid fully reacts with the anode porous transport layer 210 when flowing in the first through groove 1222.

[0082] In some embodiments, in order to reduce the resistance of the fluid when it flows, at least the bottom 1221 of the first receiving groove is plated.

[0083] In some embodiments, considering that the liquid inlet 401 and the gas-liquid outlet 402 are arranged diagonally on the anode end plate 400, as shown in FIG. Figure 7 As shown, two water inlet and outlet areas 110 are provided, and the two water inlet and outlet areas 110 are arranged diagonally.

[0084] Similarly, if Fig. 9 As shown, two first transition zones 121 are provided, and the two first transition zones 121 are arranged diagonally, and the first transition zones 121 correspond to the water inlet and outlet zones 110 one by one.

[0085] It can be understood that the fluid flows into one of the first grooves 112 through the liquid inlet 401, flows from the corresponding first through hole 111 through the corresponding second groove 1211 and the first through groove 1222, and then flows out of another first through hole 111 from another second groove 1211, and finally flows out from the gas-liquid outlet 402 through another first groove 112.

[0086] In some embodiments, Fig. 9 and Fig.10As shown, the first reaction zone 122 of the first flow field area 120 is also provided with a plurality of first reinforcing blocks 1223, at least one of which is provided in the first through groove 1222, and the thickness of the first reinforcing block 1223 along the first direction is less than the depth of the first through groove 1222 along the first direction, so as to ensure that the distance between two adjacent first through grooves 1222 is always consistent, play a supporting role, and ensure that the fluid is evenly distributed in all the first channels. It should be noted that the number, shape and size of the first reinforcing blocks 1223 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0087] It can be understood that the thickness of the first reinforcement block 1223 along the first direction is less than the depth of the first through groove 1222 along the first direction, so that the fluid can flow between the first reinforcement block 1223 and the anode porous transmission layer 210 to ensure the normal flow of the fluid in the first through groove 1222.

[0088] In some embodiments, Figure 7 As shown, the first surface of the anode flow field plate 100 is provided with a first wiring area 113 protruding along the second direction, which is used to connect an external power source to realize water electrolysis by energizing the anode flow field plate 100. It should be noted that the shape and size of the first wiring area 113 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0089] In some embodiments, Figures 11 to 14 As shown, the first surface of the cathode flow field plate 300 has an outlet area 310, and the outlet area 310 is provided with a plurality of second through holes 311 and a plurality of third grooves 312 arranged at intervals along the second direction, each second through hole 311 is connected to the inlet and outlet, and the third grooves 312 and the second through holes 311 correspond one-to-one and are connected; the second surface of the cathode flow field plate 300 has a second flow field area 320, and the second flow field area 320 is provided with a plurality of fourth grooves 3211 and a plurality of second through grooves 3222 arranged at intervals along the second direction, each fourth groove 3211 corresponds one-to-one and is connected with the second through hole 311, each second through groove 3222 corresponds one-to-one with the fourth groove 3211 and is connected with an end of the fourth groove 3211 away from the second through hole 311; wherein the second hollow flow channel includes the third groove 312, the second through hole 311, the fourth groove 3211 and the second through groove 3222.

[0090] It should be noted that the first surface of the cathode flow field plate 300 is close to the cathode end plate 500 , and the second surface of the cathode flow field plate 300 is close to the anode flow field plate 100 .

[0091] It can be understood that the second through hole 311 is connected to the inlet and outlet, so that the inlet and outlet are connected to the second hollow flow channel, and the third groove 312 and the fourth groove 3211 are used to guide the flow direction of the gas, and the gas is made to flow in the second through groove 3222 so as to be observed through the cathode end plate 500. It should be noted that the shape and structure of the second through groove 3222 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0092] In some embodiments, Fig.11 and Fig.13 As shown, the first and second surfaces of the cathode flow field plate 300 are both provided with fifth avoidance grooves 301 for avoiding the corresponding second sealing member 720 , and the gas outlet area 310 and the second flow field area 320 are respectively arranged at the bottom of the corresponding fifth avoidance grooves 301 .

[0093] In this embodiment, Fig.13 As shown, a sixth avoidance groove 302 is further provided on the periphery of the second surface of the cathode flow field plate 300 to avoid a short circuit between the anode flow field plate 100 and the cathode flow field plate 300 during the electrolysis of water.

[0094] In some embodiments, Fig.13 As shown, the second flow field area 320 includes a second transition area 321 and a second reaction area 322, the fourth groove 3211 is arranged in the second transition area 321, the second reaction area 322 is provided with a second receiving groove, and the second through groove 3222 is arranged at the groove bottom 3221 of the second receiving groove.

[0095] It can be understood that the second receiving groove is used to accommodate the cathode gas diffusion layer 230 to ensure that one side of the cathode gas diffusion layer 230 along the first direction is tightly fitted with the groove bottom 3221 of the second receiving groove, ensuring that the gas fully reacts with the cathode gas diffusion layer 230 when flowing in the second through groove 3222.

[0096] In some embodiments, in order to reduce the resistance when the gas flows, at least the bottom 3221 of the second receiving groove is plated.

[0097] In some embodiments, considering that the two gas outlets 403 are arranged diagonally on the anode end plate 400, as shown in FIG. Fig.11 As shown, two gas outlet areas 310 are provided, and the two gas outlet areas 310 are arranged diagonally.

[0098] Similarly, if Fig.13 As shown, two second transition zones 321 are provided, and the two second transition zones 321 are arranged diagonally, and the second transition zones 321 correspond to the gas outlet zones 310 one by one.

[0099] It can be understood that the gas flows into one of the third grooves 312 through the liquid inlet 401, flows from the corresponding second through hole 311 through the corresponding fourth groove 3211 and the second through groove 3222, and then flows out of another second through hole 311 from another fourth groove 3211, and finally flows out from the gas outlet 403 through another third groove 312.

[0100] In some embodiments, Fig.13 and Fig.14 As shown, the second reaction zone 322 of the second flow field area 320 is also provided with a plurality of second reinforcing blocks 3223, at least one second reinforcing block 3223 is arranged in the second through groove 3222, and the thickness of the second reinforcing block 3223 along the first direction is less than the depth of the second through groove 3222 along the second direction, so as to ensure that the distance between two adjacent second through grooves 3222 is always consistent, play a supporting role, and ensure that the gas is evenly distributed in all the second channels. It should be noted that the number, shape and size of the second reinforcing blocks 3223 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0101] It is understandable that the thickness of the second reinforcement block 3223 along the first direction is less than the depth of the second through groove 3222 along the first direction, so that the gas can flow between the second reinforcement block 3223 and the cathode gas diffusion layer 230 to ensure the normal flow of gas in the second through groove 3222.

[0102] In some embodiments, Fig.11 As shown, the first surface of the cathode flow field plate 300 is provided with a second wiring area 313 protruding along the second direction, which is used for external power supply to realize water electrolysis by energizing the cathode flow field plate 300. It should be noted that the shape and size of the second wiring area 313 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0103] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0104] In the description of the present application, 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 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 application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0105] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0106] In the description of the present application, “plurality” means two or more.

[0107] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0108] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means 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 application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0110] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A proton exchange membrane electrolyzer visualization device, comprising an anode flow field plate, a membrane electrode and a cathode flow field plate connected in sequence along a first direction, characterized in that: The anode flow field plate has a first hollow flow channel, the cathode flow field plate has a second hollow flow channel, and the proton exchange membrane electrolyzer visualization device further includes: an anode end plate having an inlet and an outlet, the inlet and the outlet are respectively connected to the first hollow flow channel and the second hollow flow channel, the anode end plate is used to observe the flow direction of gas and liquid and the generation of gas through the first hollow flow channel; The cathode end plate is bonded to the anode end plate, and the cathode end plate is used to observe the flow direction of the gas through the second hollow flow channel, wherein the anode end plate and the cathode end plate are both made of transparent materials.

2. The proton exchange membrane electrolyzer visualization device according to claim 1, characterized in that: The first surface of the anode flow field plate has a water inlet and outlet area, and the water inlet and outlet area is provided with a plurality of first through holes and a plurality of first grooves arranged at intervals along the second direction, each of the first through holes is connected to the inlet and outlet, and the first grooves correspond to and are connected to the first through holes one by one; The second surface of the anode flow field plate has a first flow field area, and the first flow field area is provided with a plurality of second grooves and a plurality of first through grooves arranged at intervals along the second direction, each of the second grooves corresponds to and is connected with the first through hole one by one, and each of the first through grooves corresponds to the second groove one by one and is connected with an end of the second groove away from the first through hole; wherein, the first hollow flow channel includes the first groove, the first through hole, the second groove and the first through groove.

3. The proton exchange membrane electrolyzer visualization device according to claim 2, characterized in that: The first flow field area includes a first transition area and a first reaction area, the second groove is arranged in the first transition area, the first reaction area is provided with a first containing groove, and the first through groove is arranged at the bottom of the first containing groove.

4. The proton exchange membrane electrolyzer visualization device according to claim 2, characterized in that: The first flow field area is further provided with a plurality of first reinforcement blocks, at least one of which is arranged in the first through groove, and the thickness of the first reinforcement block along the first direction is smaller than the depth of the first through groove along the first direction.

5. The proton exchange membrane electrolyzer visualization device according to claim 2, characterized in that: The first surface of the cathode flow field plate has a gas outlet area, and the gas outlet area is provided with a plurality of second through holes and a plurality of third grooves arranged at intervals along the second direction, each of the second through holes is connected to the inlet and outlet, and the third grooves correspond to and are connected to the second through holes one by one; The second surface of the cathode flow field plate has a second flow field area, and the second flow field area is provided with a plurality of fourth grooves and a plurality of second through grooves arranged at intervals along the second direction, each of the fourth grooves corresponds to and is connected with the second through hole one by one, and each of the second through grooves corresponds to the fourth groove one by one and is connected with an end of the fourth groove away from the second through hole; wherein, the second hollow flow channel includes the third groove, the second through hole, the fourth groove and the second through groove.

6. The proton exchange membrane electrolyzer visualization device according to claim 5, characterized in that: The second flow field area includes a second transition area and a second reaction area, the fourth groove is arranged in the second transition area, the second reaction area is provided with a second containing groove, and the second through groove is arranged at the groove bottom of the second containing groove.

7. The proton exchange membrane electrolyzer visualization device according to claim 5, characterized in that: The second flow field area is further provided with a plurality of second reinforcement blocks, at least one of which is arranged in the second through groove, and the thickness of the second reinforcement block along the first direction is smaller than the depth of the second through groove along the second direction.

8. The proton exchange membrane electrolyzer visualization device according to claim 5, characterized in that: There are two water inlet and outlet areas, and the two water inlet and outlet areas are arranged diagonally; and / or There are two air outlet areas, and the two water inlet and outlet areas are arranged diagonally.

9. The proton exchange membrane electrolyzer visualization device according to any one of claims 1 to 8, characterized in that: Also includes: A first pressure contact plate, connected to the anode end plate and located at a side of the anode end plate away from the cathode end plate; The second pressure contact plate is connected to the cathode end plate and is located on a side of the cathode end plate away from the anode end plate; wherein the surfaces of the first pressure contact plate and the second pressure contact plate along the first direction are both provided with at least one observation through hole.

10. The proton exchange membrane electrolyzer visualization device according to any one of claims 1 to 7, characterized in that: Also includes: A first seal, wherein a first seal is provided between the anode flow field plate and the anode end plate and between the anode flow field plate and the membrane electrode; A second sealing member is provided between the cathode flow field plate and the cathode end plate and between the cathode flow field plate and the membrane electrode.

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