Flow field assembly, end plate structure, electrolytic bath and hydrogen production system

Abstract

The utility model provides a flow field assembly, an end plate structure, an electrolytic bath and a hydrogen production system, and relates to the technical field of electrolytic baths, the flow field assembly is used for the electrolytic bath, and the flow field assembly comprises a flow field plate and a heat conduction piece arranged on at least part of the surface of the flow field plate. The heat conduction part is used for being connected with a power source so that the flow field plate can apply an electric field into the electrolytic cell and is used for guiding out heat of the electrolytic cell through the flow field plate. According to the flow field assembly, on one hand, power is supplied to the flow field plate through the heat conduction piece, the electric shock risk caused by power connection of the end plate is avoided or reduced, on the other hand, high temperature generated by electrolysis is conducted out through the heat conduction piece, the proper working temperature is maintained, and the electrolysis efficiency is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of electrolyzers, and in particular to a flow field assembly, an end plate structure, an electrolyzer, and a hydrogen production system. Background Art

[0002] As the proportion of hydrogen in the terminal energy system continues to increase, its market demand is also growing, which puts higher requirements on hydrogen production-related equipment.

[0003] Currently, most hydrogen production is done using alkaline electrolyzers, a relatively mature and dominant technology. These electrolyzers consist of end plates, bipolar plates, electrodes, diaphragms, and seals.

[0004] However, the above-mentioned electrolytic cells are usually connected to electricity through end plates, which poses a risk of electric shock during the electrolysis process and also generates a large amount of heat, affecting the electrolysis efficiency. Utility Model Content

[0005] Based on this, the present application provides a flow field assembly, an end plate structure, an electrolyzer and a hydrogen production system to solve the problem that the end plates on the existing electrolyzers have electric shock and poor heat dissipation during the electrolysis process.

[0006] In a first aspect, the present application provides a flow field assembly for an electrolytic cell, the flow field assembly comprising a flow field plate and a heat conducting member disposed on at least a portion of a surface of the flow field plate;

[0007] The heat conducting member is used to connect a power source so that the flow field plate applies an electric field to the electrolytic cell, and the heat conducting member is used to conduct heat from the electrolytic cell through the flow field plate.

[0008] In one possible implementation, the heat conducting member includes a heat conducting portion and at least two connecting portions, the heat conducting portion abuts against at least a portion of the surface of the flow field plate, and at least one connecting portion is located outside the flow field plate and is used to connect to a power source;

[0009] Each connecting portion is connected to the heat conducting portion, and the heat conducted to the heat conducting portion by the flow field plate is conducted away.

[0010] In a possible implementation, the heat conducting portion and each connecting portion independently have a first flow channel, the first flow channels are connected, and the first flow channels are used to accommodate the heat conducting fluid;

[0011] At least one connection portion is used for the inflow of heat transfer fluid, and at least one connection portion is used for the outflow of heat transfer fluid.

[0012] In a possible implementation, the heat conducting portion is curved.

[0013] In a possible implementation, both ends of the heat conducting portion are respectively connected to connecting portions.

[0014] In a possible implementation, the heat conducting element and the flow field plate are connected as one body.

[0015] In one possible implementation, an electrolysis chamber, a first flow channel, and a second flow channel are provided on a side of the flow field plate facing away from the heat conductor. The first flow channel and the second flow channel are independently connected to the electrolysis chamber. The first flow channel is used for the passage of electrolyte, and the second flow channel is located on a side facing away from the first flow channel and is used for the passage of gas generated by electrolysis.

[0016] And / or, a plurality of protrusions and a first sealing portion are further provided on a side of the flow field plate facing away from the heat conducting member, the protrusions are located in the electrolysis chamber, and the first sealing portion is arranged around the circumference of the electrolysis chamber.

[0017] In a second aspect, the present application further provides an end plate structure, comprising an end plate and any one of the flow field components provided in the first aspect arranged on the end plate.

[0018] In a possible implementation, the end plate is an insulating member.

[0019] In a possible implementation, a mounting groove is provided on one side of the end plate, and the flow field plate and the heat conducting member are embedded in the mounting groove;

[0020] The side of the heat conducting member facing away from the flow field plate abuts against the bottom of the mounting groove, and part of the heat conducting member is located outside the end plate.

[0021] In a possible implementation, an access hole communicating with the mounting groove is provided on the end plate, and the heat conducting member is inserted into the end plate through the access hole.

[0022] In a possible implementation, the end plate is further provided with a second flow channel, a third flow channel, and a fourth flow channel, wherein the second flow channel is used for the electrolyte to pass through;

[0023] The third flow channel and the fourth flow channel are located above the second flow channel, one of the third flow channel and the fourth flow channel is used for the passage of hydrogen generated by electrolysis, and the other is used for the passage of oxygen generated by electrolysis;

[0024] And / or, a second sealing portion is provided on a side of the end plate close to the flow field plate, and the second sealing portion is arranged around a circumference of the mounting groove;

[0025] And / or, a plurality of mounting portions are further provided on the end plate, and the plurality of mounting portions surround the circumference of the second sealing portion.

[0026] In a third aspect, the present application further provides an electrolytic cell, comprising an electrolytic cell body, on which is disposed any one of the flow field components provided in the first aspect;

[0027] Alternatively, the electrolytic cell body is provided with any one of the end plate structures provided in the second aspect.

[0028] In a fourth aspect, the present application also provides a hydrogen production system, comprising the electrolyzer provided in the third aspect.

[0029] The present application provides a flow field assembly, an end plate structure, an electrolyzer and a hydrogen production system for an electrolyzer. The flow field assembly includes a flow field plate and a heat conductor. The heat conductor is arranged on at least a portion of the surface of the flow field plate and connected to a power source via the heat conductor so that the flow field plate applies an electric field to the electrolyzer, and the heat conductor is used to conduct heat from the electrolyzer through the flow field plate. On the one hand, the flow field plate is powered by the heat conductor to avoid or reduce the risk of electric shock caused by the end plate being connected to electricity. On the other hand, the high temperature generated by electrolysis is conducted away via the heat conductor to maintain a suitable operating temperature and ensure electrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 A schematic structural diagram of a flow field assembly provided in an embodiment of the present application;

[0032] Figure 2 for Figure 1 A structural diagram from another perspective;

[0033] Figure 3 A schematic structural diagram of the end plate provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the installation structure of the end plate and flow field assembly provided in an embodiment of the present application;

[0035] Figure 5 for Figure 4 A structural diagram from another perspective.

[0036] Reference numerals:

[0037] 100: flow field plate;

[0038] 110: electrolysis room;

[0039] 120: first chute;

[0040] 130: second chute;

[0041] 140: raised portion;

[0042] 150: first sealing portion;

[0043] 200: heat conducting parts;

[0044] 201: first flow channel;

[0045] 210: heat conduction part;

[0046] 220: connection part;

[0047] 300: end plate;

[0048] 301: second flow channel;

[0049] 302: third flow channel;

[0050] 303: fourth flow channel;

[0051] 310: mounting slot;

[0052] 330: second sealing portion;

[0053] 340: Installation department. DETAILED DESCRIPTION

[0054] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of methods and apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

[0055] The terms "first," "second," "third," "fourth," etc. (if any) in the specification and claims of the present application and in the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that the numbers used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or apparatus.

[0056] Currently, most electrolyzers have metal end plates, which can easily cause electric shock and short circuits when connected to the power supply. They are also heavy. Furthermore, electrolyzers generate heat during operation. Without proper temperature control, excessive temperatures can affect efficiency and create the risk of accidents.

[0057] In response to the above-mentioned problems existing in the prior art, the present application provides a flow field assembly, an end plate structure, an electrolyzer, and a hydrogen production system. The flow field assembly provided in the present application includes a flow field plate and a heat conductor. By disposing the heat conductor on at least a portion of the surface of the flow field plate and connecting the heat conductor to a power source, the flow field plate is electrically conductive. On the one hand, the heat conductor is used to supply power to the flow field plate, thereby avoiding or reducing the risk of electric shock caused by connecting the end plate to the power supply. On the other hand, the heat conductor is used to conduct away the high temperature generated by electrolysis, thereby maintaining a suitable operating temperature and ensuring electrolysis efficiency.

[0058] The following specific embodiments are used to describe the technical solution of the present application in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0059] First, refer to Figure 1-Figure 2 As shown, an embodiment of the present application provides a flow field assembly for an electrolytic cell, wherein the flow field assembly includes a flow field plate 100 and a heat conducting member 200 disposed on at least a portion of the surface of the flow field plate 100 .

[0060] The heat conducting member 200 is used to connect to a power source so that the flow field plate 100 applies an electric field to the electrolytic cell. The heat conducting member 200 is used to conduct heat from the electrolytic cell through the flow field plate 100 .

[0061] The flow field plate 100 in this embodiment is also called a monopolar plate (can be an anode plate or a cathode plate), which serves as the anode or cathode of the electrolytic cell, and has a metal plate-shaped, block-shaped or other structure, and can be annular in shape.

[0062] The heat conducting member 200 in this embodiment is used for conducting heat and electricity and can be a metal member, such as a copper member, an aluminum member, etc. The heat conducting member 200 can be in a curved, plate-like, sheet-like, or hollow structure and can be connected to at least a portion of the surface of the flow field plate 100 by welding, snap-on screwing, or the like. For example, when the heat conducting member 200 is a hollow structure, a heat conducting fluid can be passed through it to remove heat and achieve cooling. When the heat conducting member 200 is a solid structure, an external heat sink can be connected to remove heat from the heat conducting member 200, which can also achieve cooling.

[0063] Specifically, if Figure 4 As shown, after the flow field assembly is mounted on the end plate 300, during the electrolysis process, power can be supplied to the flow field plate 100 via the heat conductor 200. In this case, the end plate 300 can be made of a non-metallic insulating material, significantly reducing the risk of electric shock or short circuits. Furthermore, the heat conductor 200 can dissipate the high temperature inside the electrolytic cell, thereby maintaining a suitable operating temperature within the cell and ensuring electrolysis efficiency.

[0064] It can be understood that, compared with the structure of the existing electrolytic cell using metal end plates, the application of the flow field assembly in this embodiment can power the flow field plate 100 through the heat conductor 200, avoid or reduce the risk of electric shock caused by the end plate 300 being connected to the power supply, and conduct the high temperature generated by electrolysis through the heat conductor 200, maintain a suitable working temperature, and ensure electrolysis efficiency.

[0065] In addition, the end plate 300 is made of non-metallic material, and together with the non-metallic bipolar plate, it forms an electrolytic cell, which can greatly reduce the overall weight of the entire electrolytic cell.

[0066] Therefore, the flow field assembly provided in the embodiment of the present application includes a flow field plate 100 and a heat conductor 200. The heat conductor 200 is set on at least a portion of the surface of the flow field plate 100, and the heat conductor 200 is used to connect a power source so that the flow field plate 100 applies an electric field to the electrolytic cell, and the heat conductor 200 is used to conduct the heat of the electrolytic cell through the flow field plate 100. On the one hand, the flow field plate 100 is powered by the heat conductor 200 to avoid or reduce the risk of electric shock caused by the end plate 300 being connected to the power supply. On the other hand, the high temperature generated by the electrolysis is conducted out through the heat conductor 200 to maintain a suitable working temperature and ensure the electrolysis efficiency.

[0067] In one possible design, the heat conducting member 200 includes a heat conducting portion 210 and at least two connecting portions 220 . The heat conducting portion 210 abuts against at least a portion of the surface of the flow field plate 100 . At least one connecting portion 220 is located outside the flow field plate 100 for connecting to a power source.

[0068] Each connecting portion 220 is in communication with the heat conducting portion 210 to dissipate heat conducted from the flow field plate 100 to the heat conducting portion 210 .

[0069] Set it up like this, Figure 1 、 Figure 4 As shown, heat can be conducted through the heat conducting portion 210 in contact with the flow field plate 100 , and the two connecting portions 220 can extend to the outside of the end plate 300 , serving both electrical connection and heat conduction. Usually, only one of the connecting portions 220 is required to be connected to the electricity.

[0070] Among them, the heat conducting part 210 can be a plate-shaped, curved, circuitous, snake-shaped or other structure, and the connecting part 220 can be a plate-shaped, rod-shaped, strip-shaped, sheet-shaped or other structure, which can be combined with the heat conducting part 210 into one body, that is, each connecting part 220 is connected to the heat conducting part 210. The specific shape of the heat conducting part 210, as well as the specific number, shape, position, etc. of the connecting part 220 can be determined according to actual needs and are not specifically limited in this embodiment.

[0071] Furthermore, in this embodiment, the heat conducting portion 210 and each connecting portion 220 each independently have a first flow channel 201 , and each first flow channel 201 is connected to each other. The first flow channel 201 is used to accommodate a heat conducting fluid.

[0072] At least one connection portion 220 is used for the heat transfer fluid to flow in, and at least one connection portion 220 is used for the heat transfer fluid to flow out.

[0073] In this way, if Figure 1 As shown, there are two connecting parts 220. The low-temperature heat-conducting fluid can flow into the first flow channel 201 from one connecting part 220. When passing through the heat-conducting part 210, it absorbs the heat transferred from the flow field plate 100 and becomes a high-temperature fluid. Then it flows out from the other connecting part 220, thereby playing the role of conducting away the internal high temperature.

[0074] When there are multiple connection portions 220, at least one connection portion 220 is used for the inflow of heat transfer fluid, and at least one connection portion 220 is used for the outflow of heat transfer fluid. Furthermore, all of the connection portions 220 are connected to the heat transfer portion 210. On the one hand, by selecting a few connection portions 220 for the inflow of heat transfer fluid and the remaining connection portions 220 for the outflow of heat transfer fluid, the total flow area is increased while the volume remains unchanged, thereby improving the heat transfer effect. On the other hand, two of the connection portions 220 can be flexibly selected for electrical or thermal connections to meet flexible installation and layout requirements. In this case, the unselected connection portions 220 need to be sealed.

[0075] The heat transfer fluid can be air, coolant, or any other insulating fluid capable of transferring heat. The heat transfer fluid can be selected based on actual needs and is not specifically limited in this embodiment. Furthermore, the heat transferred by the heat transfer fluid can also be used in certain heating systems.

[0076] Furthermore, in this embodiment, the heat conducting portion 210 is curved. Figure 2 As shown, the contact area between the heat conducting portion 210 and the flow field plate 100 can be increased, thereby extending the path of the heat conducting fluid flowing through the first flow channel 201 and improving the heat conduction effect, while also controlling the overall weight of the heat conducting member 200 .

[0077] Of course, the heat conducting portion 210 may also have a winding or serpentine shape, etc. structure, which can be determined according to actual needs and is not too limited in this embodiment.

[0078] Furthermore, in this embodiment, both ends of the heat conducting portion 210 are connected to connecting portions 220 respectively.

[0079] Specifically, if Figure 1As shown, one connecting portion 220 is connected to one end above the heat conducting portion 210, and the other connecting portion 220 is connected to the other end below the heat conducting portion 210. This facilitates layout. Of course, the two connecting portions 220 can also be arranged on the same side of the heat conducting portion 210 or at other locations on the heat conducting portion 210. This is not limited in this embodiment.

[0080] In some embodiments, the heat conductor 200 is integrally connected to the flow field plate 100. This arrangement can ensure the structural stability of the entire flow field assembly. For example, the heat conductor 200 and the flow field plate 100 can be integrated into a structure by welding, die-casting, or other methods, thereby making the connection between the two more stable and reliable.

[0081] In some embodiments, an electrolysis chamber 110, a first flow trough 120, and a second flow trough 130 are provided on the side of the flow field plate 100 facing away from the heat conductor 200. The first flow trough 120 and the second flow trough 130 are each independently connected to the electrolysis chamber 110. The first flow trough 120 is used for the passage of electrolyte, and the second flow trough 130 is located on the side facing away from the first flow trough 120 and is used for the passage of gas generated by electrolysis.

[0082] And / or, a plurality of protrusions 140 and a first sealing portion 150 are further provided on the side of the flow field plate 100 facing away from the heat conducting member 200 . The protrusions 140 are located in the electrolysis chamber 110 , and the first sealing portion 150 is arranged around the circumference of the electrolysis chamber 110 .

[0083] Specifically, if Figure 1 As shown, the electrolysis chamber 110 is a trough opened on the side of the flow field plate 100, and densely distributed protrusions 140, i.e., nipples, are provided in the trough. They are roughly cylindrical, conical or conical structures, or can be strip-shaped protrusion structures, so that flow channels are formed between the protrusions 140.

[0084] The flow field plate 100 is also provided with a first flow channel 120 and a second flow channel 130 which are in communication with the electrolysis chamber 110. These may be open grooves, notches, etc. When the flow field plate 100 is placed upright, the first flow channel 120 is located on the lower side to facilitate the passage of the electrolyte into the electrolysis chamber 110. The second flow channel 130 is located above the first flow channel 120 and is used for the passage of gas generated by electrolysis.

[0085] In addition, a first sealing portion 150, such as a sealing line, a sealing ring, etc., is provided on the flow field plate 100 on the side of the electrolysis chamber 110, so that the electrolyte can only enter the electrolysis chamber 110 from the first flow channel 120, and at the same time, the gas generated by electrolysis can only flow out from the second flow channel 130 for easy collection.

[0086] The specific types, sizes, and positions of the electrolysis chamber 110 , the first flow channel 120 , the second flow channel 130 , the protrusion 140 , and the first sealing portion 150 may be determined according to actual needs and are not specifically limited in this embodiment.

[0087] Second, as Figure 3-Figure 5 As shown, an embodiment of the present application further provides an end plate structure, including an end plate 300 and a flow field assembly provided by any of the above embodiments and arranged on the end plate 300 .

[0088] The structure of the flow field assembly has been described in detail in the above embodiments and will not be described again here.

[0089] The end plate structure provided in the embodiment of the present application is configured with a flow field assembly, which includes a flow field plate 100 and a heat conductor 200. The heat conductor 200 is set on at least a portion of the surface of the flow field plate 100, and the heat conductor 200 is used to connect a power source so that the flow field plate 100 applies an electric field to the electrolytic cell, and the heat conductor 200 is used to extract the heat of the electrolytic cell through the flow field plate 100. On the one hand, the flow field plate 100 is powered by the heat conductor 200 to avoid or reduce the risk of electric shock caused by the end plate 300 being connected to the power supply. On the other hand, the high temperature generated by electrolysis is extracted through the heat conductor 200 to maintain a suitable working temperature and ensure the electrolysis efficiency.

[0090] Furthermore, in this embodiment, the end plate 300 is an insulating member.

[0091] This reduces the risk of electric shock during operation. For example, the end plate 300 can be made of an engineering plastic material such as polytetrafluoroethylene, polycarbonate, polyoxymethylene, polyamide, or reinforced polysulfone. For example, the flow field assembly can be integrally formed with the end plate 300 through injection molding. The flow field assembly can serve as the skeleton of the end plate 300, enhancing the overall structural strength to a certain extent.

[0092] Furthermore, in this embodiment, a mounting groove 310 is defined on one side of the end plate 300 , and the flow field plate 100 and the heat conducting member 200 are embedded in the mounting groove 310 .

[0093] The side of the heat conducting member 200 facing away from the flow field plate 100 abuts against the bottom of the mounting groove 310 , and a portion of the heat conducting member 200 is located outside the end plate 300 .

[0094] Specifically, if Figure 3 As shown, the mounting groove 310 can be a sink, and its shape and size match the circumference of the flow field plate 100. For example, the end plate 300 is made of plastic. The flow field plate 100 and the heat conductor 200 can be placed in a mold in advance, and then injection molding is performed to combine the flow field plate 100, the heat conductor 200 and the end plate 300 into one body, thereby ensuring the overall strength.

[0095] Part of the heat conducting member 200 passes through the end plate 300 to facilitate heat conduction and electrical connection. The position and size of the heat conducting member 200 passing through the end plate 300 can be determined according to actual needs and are not specifically limited in this embodiment.

[0096] Furthermore, in this embodiment, an access hole 320 communicating with the mounting groove 310 is provided on the end plate 300 , and the heat conducting member 200 is inserted into the end plate 300 through the access hole 320 .

[0097] Specifically, if Figure 3 As shown, the mounting groove 310 is located on the end face of the end plate 300, and the access hole 320 is opened on the side wall of the end plate 300, which is connected to the mounting groove 310. Part of the heat conducting member 200 passes through the access hole 320, that is, the connecting portion 220 passes through the access hole 320, so as to facilitate electrical connection or heat conduction.

[0098] For example, the heat conducting member 200 has connecting portions 220 on both sides. Since the flow field plate 100 and the heat conducting member 200 are both metal parts, the flow field plate 100 and the heat conducting member 200 can be pre-molded into an integral body. The integrated flow field plate 100 and heat conducting member 200 are then placed in a mold. The mold cavity matches the shape of the end plate 300 and the two connecting portions 220. Through injection molding, the two connecting portions 220 are inserted into the end plate 300 through the access holes 320, and the flow field plate 100, the heat conducting member 200, and the end plate 300 are combined into an integral body. The specific size and position of the access holes 320 can be determined based on the connecting portions 220 and are not specifically limited in this embodiment.

[0099] Furthermore, in this embodiment, a second flow channel 301 , a third flow channel 302 and a fourth flow channel 303 are further provided on the end plate 300 , and the second flow channel 301 is used for the passage of electrolyte.

[0100] The third flow channel 302 and the fourth flow channel 303 are located on a side away from the second flow channel 301 . One of the third flow channel 302 and the fourth flow channel 303 is used for the passage of hydrogen generated by electrolysis, and the other is used for the passage of oxygen generated by electrolysis.

[0101] And / or, a second sealing portion 330 is provided on a side of the end plate 300 close to the flow field plate 100 , and the second sealing portion 330 is disposed around a circumference of the mounting groove 310 .

[0102] And / or, a plurality of mounting portions 340 are further provided on the end plate 300 , and the plurality of mounting portions 340 surround the circumference of the second sealing portion 330 .

[0103] Specifically, if Figure 3As shown, the end plate 300 is also provided with a second flow channel 301, a third flow channel 302, and a fourth flow channel 303. When the end plate 300 is placed upright, the second flow channel 301 is located on the side below the end plate 300 and is connected to the first flow channel 120, facilitating the centralized supply of electrolyte. The third flow channel 302 and the fourth flow channel 303 are located above the second flow channel 301. The third flow channel 302 is connected to the flow channel above a portion of the bipolar plate to collect hydrogen or oxygen. The fourth flow channel 303 is connected to the flow channel above another portion of the bipolar plate and another second flow channel 130 to collect oxygen or hydrogen. Here, the specific gas collected in the third flow channel 302 and the fourth flow channel 303 depends on the positive and negative pole orientation when the power is connected.

[0104] Moreover, a second sealing portion 330 is provided on the side of the end plate 300 close to the flow field plate 100, which can be a sealing line, a sealing ring, etc., so that the electrolyte can only flow from the second flow channel 301 into the first flow channel 120, and the gas in the second flow channel 130 can only flow into the third flow channel 302 or the fourth flow channel 303, thereby playing a sealing role and preventing leakage.

[0105] In addition, a plurality of mounting portions 340 , such as through holes and open slots, are provided on the peripheral side of the end plate 300 to facilitate the passage of screws, so as to connect the two end plates 300 and the bipolar plates in series to form an electrolytic cell, which is convenient for installation and fixation.

[0106] The specific types, sizes, positions, etc. of the second flow channel 301 , the third flow channel 302 , the fourth flow channel 303 , the second sealing portion 330 and the mounting portion 340 may be determined according to actual needs and are not specifically limited in this embodiment.

[0107] In a third aspect, an embodiment of the present application further provides an electrolytic cell, comprising an electrolytic cell body, on which is provided a flow field assembly or an end plate structure provided in any of the above embodiments.

[0108] The electrolytic cell provided in the embodiment of the present application is configured by preparing the above-mentioned flow field assembly or end plate structure, wherein the flow field assembly includes a flow field plate 100 and a heat conductor 200. The heat conductor 200 is set on at least a portion of the surface of the flow field plate 100, and the heat conductor 200 is used to connect a power source so that the flow field plate 100 applies an electric field to the electrolytic cell, and the heat conductor 200 is used to conduct heat from the electrolytic cell through the flow field plate 100. On the one hand, the flow field plate 100 is powered by the heat conductor 200 to avoid or reduce the risk of electric shock caused by the power connection of the end plate 300. On the other hand, the high temperature generated by electrolysis is conducted away by the heat conductor 200 to maintain a suitable working temperature and ensure electrolysis efficiency.

[0109] In a fourth aspect, an embodiment of the present application further provides a hydrogen production system, comprising the electrolyzer provided in any of the above embodiments.

[0110] The hydrogen production system provided in an embodiment of the present application includes an electrolyzer, which is configured by the above-mentioned flow field assembly or end plate structure, wherein the flow field assembly includes a flow field plate 100 and a heat conductor 200. The heat conductor 200 is set on at least a portion of the surface of the flow field plate 100, and the heat conductor 200 is connected to a power source so that the flow field plate 100 applies an electric field to the electrolyzer, and the heat conductor 200 is used to conduct heat from the electrolyzer through the flow field plate 100. On the one hand, the flow field plate 100 is powered by the heat conductor 200 to avoid or reduce the risk of electric shock caused by the end plate 300 being connected to electricity. On the other hand, the high temperature generated by electrolysis is conducted away by the heat conductor 200 to maintain a suitable operating temperature and ensure electrolysis efficiency.

[0111] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present application are indicated by the claims.

[0112] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A flow field assembly for an electrolytic cell, characterized in that: It comprises a flow field plate (100) and a heat conducting member (200) arranged on at least a portion of the surface of the flow field plate (100); The heat conducting member (200) is used to connect to a power source so that the flow field plate (100) applies an electric field to the electrolytic cell, and the heat conducting member (200) is used to conduct heat from the electrolytic cell through the flow field plate (100).

2. The flow field assembly according to claim 1, characterized in that The heat conducting member (200) comprises a heat conducting portion (210) and at least two connecting portions (220), wherein the heat conducting portion (210) abuts against at least a portion of the surface of the flow field plate (100), and at least one of the connecting portions (220) is located outside the flow field plate (100) and is used for connecting to the power source; Each of the connecting portions (220) is in communication with the heat conducting portion (210) to conduct heat conducted from the flow field plate (100) to the heat conducting portion (210).

3. The flow field assembly according to claim 2, characterized in that The heat conducting portion (210) and each of the connecting portions (220) each independently have a first flow channel (201), each of the first flow channels (201) is connected, and the first flow channels (201) are used to accommodate a heat conducting fluid; At least one of the connection parts (220) is used for the heat transfer fluid to flow in, and at least one of the connection parts (220) is used for the heat transfer fluid to flow out.

4. The flow field assembly according to claim 3, characterized in that The heat conducting portion (210) is curved.

5. The flow field assembly according to claim 4, characterized in that: Both ends of the heat conducting portion (210) are respectively connected to the connecting portions (220).

6. The flow field assembly according to claim 1, characterized in that The heat conducting member (200) and the flow field plate (100) are connected as one body.

7. The flow field assembly according to any one of claims 1 to 6, characterized in that: An electrolysis chamber (110), a first flow channel (120), and a second flow channel (130) are provided on a side of the flow field plate (100) away from the heat conducting member (200). The first flow channel (120) and the second flow channel (130) are independently connected to the electrolysis chamber (110). The first flow channel (120) is used for the electrolyte to pass through. The second flow channel (130) is located on a side away from the first flow channel (120) and is used for the gas generated by electrolysis to pass through. And / or, a plurality of protrusions (140) and a first sealing portion (150) are further provided on the side of the flow field plate (100) facing away from the heat conducting member (200), the protrusions (140) are located in the electrolysis chamber (110), and the first sealing portion (150) is arranged around the circumference of the electrolysis chamber (110).

8. An end plate structure, characterized in that: The invention comprises an end plate (300) and a flow field assembly according to any one of claims 1 to 7, which is arranged on the end plate (300).

9. The end plate structure according to claim 8, characterized in that: The end plate (300) is an insulating member.

10. The end plate structure according to claim 8, characterized in that: A mounting groove (310) is provided on one side of the end plate (300), and the flow field plate (100) and the heat conducting member (200) are embedded in the mounting groove (310); The side of the heat conducting member (200) facing away from the flow field plate (100) abuts against the bottom of the mounting groove (310), and a portion of the heat conducting member (200) is located outside the end plate (300).

11. The end plate structure according to claim 10, characterized in that: The end plate (300) is provided with an access hole (320) communicating with the mounting groove (310), and the heat conducting member (200) is inserted into the end plate (300) through the access hole (320).

12. The end plate structure according to claim 10, characterized in that: The end plate (300) is further provided with a second flow channel (301), a third flow channel (302) and a fourth flow channel (303), wherein the second flow channel (301) is used for the passage of electrolyte; The third flow channel (302) and the fourth flow channel (303) are located on a side away from the second flow channel (301), one of the third flow channel (302) and the fourth flow channel (303) is used for the passage of hydrogen generated by electrolysis, and the other is used for the passage of oxygen generated by electrolysis; And / or, a second sealing portion (330) is provided on a side of the end plate (300) close to the flow field plate (100), and the second sealing portion (330) is arranged around the circumference of the installation groove (310); And / or, a plurality of mounting portions (340) are further provided on the end plate (300), and the plurality of mounting portions (340) surround the circumference of the second sealing portion (330).

13. An electrolytic cell, characterized in that: comprising an electrolytic cell body, on which the flow field assembly according to any one of claims 1 to 7 is provided; Alternatively, the electrolytic cell body is provided with an end plate structure as described in any one of claims 8 to 12.

14. A hydrogen production system, characterized in that: Comprising the electrolytic cell of claim 13.

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