Electrolytic cell membrane electrode clamp structure capable of being used for independent temperature control of cathode and anode

Abstract

The utility model belongs to the technical field of electrolytic bath part testing, and particularly relates to an electrolytic bath membrane electrode clamp structure capable of being used for independent temperature control of a cathode and an anode, which comprises a cathode end plate, a cathode flow field plate, an anode flow field plate and an anode end plate which are sequentially abutted and further comprises a sealing gasket sleeved outside a membrane electrode. An integral structure formed by the sealing gasket and the membrane electrode is positioned between the cathode flow field plate and the anode flow field plate; and the cathode flow field plate and the anode flow field plate are both provided with a cooling liquid flow field and an electrolyte flow field. According to the utility model, the cathode flow field plate and the anode flow field plate can be connected with different cooling liquid sources, and cooling liquid with different temperatures can be respectively input into the cathode flow field plate and the anode flow field plate, so that the temperatures of the cathode part and the anode part of the clamp structure can be independently controlled and can be kept constant; the device is simple in structure, convenient to disassemble and assemble, reliable in use and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic cell component testing, in particular to an electrolytic cell membrane electrode fixture structure which can be used for independent temperature control of anode and cathode. Background Art

[0002] As electrochemical technology continues to develop, the design and performance of electrolyzers are also constantly improving. In order to verify and optimize the performance of various components and materials in the electrolyzer, a special test fixture is required to simulate actual working conditions and perform performance tests on various components and materials.

[0003] The membrane electrode of the electrolyzer is generally tested using a test fixture with a heating rod. During the test, the heating is controlled by the heating rod, and when cooling, the heating rod itself exchanges heat with the external structure. The temperature of the anode and cathode parts of the test fixture cannot be controlled independently, and it is not suitable for testing occasions that require a temperature difference between the anode and cathode. Utility Model Content

[0004] In view of the problem that the membrane electrode test fixture of the prior art is not suitable for testing occasions where the temperature of the anode and cathode parts of the test fixture needs to be controlled separately, the purpose of the utility model is to provide an electrolytic cell membrane electrode fixture structure that can be used for separate temperature control of the anode and cathode.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An electrolytic cell membrane electrode fixture structure that can be used for independent temperature control of anode and cathode, comprising a cathode end plate, a cathode flow field plate, an anode flow field plate and an anode end plate that are abutted in sequence, and also comprising a sealing gasket sleeved on the outside of the membrane electrode, wherein the integral structure formed by the sealing gasket and the membrane electrode is located between the cathode flow field plate and the anode flow field plate;

[0007] An electrolyte flow field A is provided on one side of the anode flow field plate close to the membrane electrode, and an electrolyte input flow channel A and an electrolyte output flow channel A respectively connected to the electrolyte flow field A are also provided on one side of the anode flow field plate close to the membrane electrode. An electrolyte transmission hole A and an electrolyte transmission hole B are provided on one side of the anode flow field plate away from the membrane electrode, and the electrolyte transmission hole A is connected to the electrolyte input flow channel A, and the electrolyte transmission hole B is connected to the electrolyte output flow channel A. A coolant passage groove A is recessed on one side of the anode flow field plate away from the membrane electrode, and a coolant flow field A is formed at the middle position of the bottom surface of the coolant passage groove A. The coolant passage groove A forms a coolant input flow channel A on one side of the coolant flow field A, and the coolant passage groove A forms a coolant output flow channel A on the other side of the coolant flow field A;

[0008] An electrolyte input interface A is provided at the anode end plate corresponding to the electrolyte transmission hole A, and the electrolyte input interface A is connected to the electrolyte transmission hole A. An electrolyte output interface A is provided at the anode end plate corresponding to the electrolyte transmission hole B, and the electrolyte output interface A is connected to the electrolyte transmission hole B. A coolant input interface A is provided at the anode end plate corresponding to the coolant input flow channel A, and the coolant input interface A is connected to the coolant input flow channel A. A coolant output interface A is provided at the anode end plate corresponding to the coolant output flow channel A, and the coolant output interface A is connected to the coolant output flow channel A.

[0009] An electrolyte flow field B is provided on one side of the cathode flow field plate close to the membrane electrode, and an electrolyte input flow channel B and an electrolyte output flow channel B respectively connected to the electrolyte flow field B are also provided on one side of the cathode flow field plate close to the membrane electrode. An electrolyte transmission hole C and an electrolyte transmission hole D are provided on one side of the cathode flow field plate away from the membrane electrode, and the electrolyte transmission hole C is connected to the electrolyte input flow channel B, and the electrolyte transmission hole D is connected to the electrolyte output flow channel B. A coolant passage groove B is recessed on one side of the cathode flow field plate away from the membrane electrode, and a coolant flow field B is formed at the middle position of the bottom surface of the coolant passage groove B. The coolant passage groove B forms a coolant input flow channel B on one side of the coolant flow field B, and the coolant passage groove B forms a coolant output flow channel B on the other side of the coolant flow field B.

[0010] An electrolyte input interface B is provided at a position corresponding to the electrolyte transmission hole C on the cathode end plate, and the electrolyte input interface B is connected to the electrolyte transmission hole C; an electrolyte output interface B is provided at a position corresponding to the electrolyte transmission hole D on the cathode end plate, and the electrolyte output interface B is connected to the electrolyte transmission hole D; a coolant input interface B is provided at a position corresponding to the coolant input flow channel B on the cathode end plate, and the coolant input interface B is connected to the coolant input flow channel B; a coolant output interface B is provided at a position corresponding to the coolant output flow channel B on the cathode end plate, and the coolant output interface B is connected to the coolant output flow channel B;

[0011] After the cathode end plate, cathode flow field plate, anode flow field plate and anode end plate are abutted and fixed together in sequence, the part of the membrane electrode located on one side of the sealing gasket abuts against the electrolyte flow field A, and the part of the membrane electrode located on the other side of the sealing gasket abuts against the electrolyte flow field B, and the side of the anode flow field plate close to the membrane electrode and the side of the cathode flow field plate close to the membrane electrode are pressed against the sealing gasket.

[0012] Conductive electrode ears are extended from the outer peripheral surface of the cathode flow field plate and the outer peripheral surface of the anode flow field plate.

[0013] The electrolyte input interface A, electrolyte output interface A, coolant input interface A, coolant output interface A, electrolyte input interface B, electrolyte output interface B, coolant input interface B, and coolant output interface B are all provided with external threads.

[0014] The axial centerline of the electrolyte input interface A is collinear with the axial centerline of the electrolyte input interface B, the axial centerline of the electrolyte output interface A is collinear with the axial centerline of the electrolyte output interface B, the axial centerline of the coolant input interface A is collinear with the axial centerline of the coolant input interface B, and the axial centerline of the coolant output interface A is collinear with the axial centerline of the coolant output interface B.

[0015] The axial center line of the electrolyte input interface A and the axial center line of the electrolyte output interface A are parallel to each other and on the same plane A, the axial center line of the coolant input interface A and the axial center line of the coolant output interface A are parallel to each other and on the same plane B, and the plane A intersects the plane B at a fixed angle.

[0016] The cathode end plate is fixed to the cathode flow field plate by screws, the anode end plate is fixed to the anode flow field plate by screws, and the sealing gasket is fixed to the cathode flow field plate or the anode flow field plate by screws.

[0017] The cathode end plate, cathode flow field plate, anode flow field plate and anode end plate are fixed together by a plurality of groups of bolts and nuts arranged in coordination with each other. The bolts of each group respectively pass through the anode end plate, anode flow field plate, cathode flow field plate and cathode end plate in sequence, and then are threadedly connected with the nuts of the same group. The heads of the bolts of each group respectively clamp the cathode end plate, cathode flow field plate, anode flow field plate and anode end plate together with the nuts of the same group, and the anode end plate and the cathode end plate are abutted in sequence to form a whole.

[0018] The cathode end plate, cathode flow field plate, anode flow field plate and anode end plate are sequentially abutted to form a whole with a plurality of bolt through holes on the outer periphery, each of the bolt through holes is embedded with an insulating sleeve, each of the insulating sleeves has a corresponding bolt passed through, and an insulating gasket is provided between the head of each bolt and the outer side surface of the adjacent cathode end plate or the outer side surface of the adjacent anode end plate.

[0019] The electrolyte flow field A and the electrolyte flow field B are both serpentine flow fields, interdigital flow fields, parallel flow fields or point flow fields, and the coolant flow field A and the coolant flow field B are both serpentine flow fields, interdigital flow fields, parallel flow fields or point flow fields.

[0020] An annular sealing groove A is provided on the outer peripheral position of the side surface of the cathode flow field plate close to the membrane electrode and the outer peripheral position of the side surface of the anode flow field plate close to the membrane electrode, and an annular sealing groove A is correspondingly embedded in each of the annular sealing grooves A; an annular sealing groove B is provided on the outer peripheral position of the side surface of the cathode flow field plate away from the membrane electrode and the outer peripheral position of the side surface of the anode flow field plate away from the membrane electrode, and an annular sealing groove B is correspondingly embedded in each of the annular sealing grooves B.

[0021] The advantages and positive effects of the utility model are:

[0022] The utility model can connect the cathode flow field plate and the anode flow field plate to different cooling liquid sources through the coordinated arrangement of the cathode flow field plate and the anode flow field plate, both of which have a cooling liquid flow field and an electrolyte flow field. Cooling liquids of different temperatures can be respectively input to the cathode flow field plate and the anode flow field plate, thereby realizing independent control of the temperatures of the anode and cathode parts of the fixture structure and maintaining a constant temperature. Thus, the utility model can be applied to testing occasions requiring a temperature difference between the anode and cathode. The utility model has a simple structure, is easy to assemble and disassemble, and is reliable and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the split structure of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a side of the anode flow field plate close to the membrane electrode of the utility model;

[0025] Figure 3 It is a schematic structural diagram of a side of the cathode flow field plate of the utility model which is away from the membrane electrode.

[0026] In the figure: 1 is the cathode end plate, 101 is the electrolyte input interface B, 102 is the electrolyte output interface B, 103 is the coolant input interface B, and 104 is the coolant output interface B;

[0027] 2 is the cathode flow field plate, 201 is the electrolyte transmission hole C, 202 is the electrolyte transmission hole D, 203 is the coolant passage B, 204 is the coolant flow field B, 205 is the coolant input flow channel B, and 206 is the coolant output flow channel B;

[0028] 3 is the anode flow field plate, 301 is the electrolyte flow field A, 302 is the electrolyte input flow channel A, and 303 is the electrolyte output flow channel A;

[0029] 4 is the anode end plate, 401 is the electrolyte input interface A, 402 is the electrolyte output interface A, 403 is the coolant input interface A, and 404 is the coolant output interface A;

[0030] 5 is a sealing gasket, 6 is a conductive electrode ear, 7 is a bolt, 8 is a nut, 9 is an insulating sleeve, 10 is an annular sealing wire groove A, and 11 is an annular sealing wire groove B;

[0031] 001 is the membrane electrode. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 The utility model is further described in detail.

[0033] A membrane electrode fixture structure for an electrolyzer that can be used for separate temperature control of anode and cathode, such as Figure 1-3 As shown, this embodiment includes a cathode end plate 1, a cathode flow field plate 2, an anode flow field plate 3 and an anode end plate 4 that are abutted against each other in sequence, and also includes a sealing gasket 5 that is sleeved on the outside of the membrane electrode 001. The overall structure formed by the sealing gasket 5 and the membrane electrode 001 is located between the cathode flow field plate 2 and the anode flow field plate 3.

[0034] An electrolyte flow field A301 is provided on one side of the anode flow field plate 3 close to the membrane electrode 001, and an electrolyte input flow channel A302 and an electrolyte output flow channel A303 respectively connected to the electrolyte flow field A301 are provided on one side of the anode flow field plate 3 close to the membrane electrode 001. An electrolyte transmission hole A and an electrolyte transmission hole B are provided on one side of the anode flow field plate 3 away from the membrane electrode 001, and the electrolyte transmission hole A is connected to the electrolyte input flow channel A302, and the electrolyte transmission hole B is connected to the electrolyte output flow channel A303. 303 are connected, a coolant passage groove A is recessed on one side of the anode flow field plate 3 away from the membrane electrode 001, a coolant flow field A is formed in the middle of the bottom surface of the coolant passage groove A, a coolant input flow channel A is formed in the coolant passage groove A and on one side of the coolant flow field A, a coolant output flow channel A is formed in the coolant passage groove A and on the other side of the coolant flow field A, and the coolant flow field A is respectively connected with the coolant input flow channel A and the coolant output flow channel A.

[0035] An electrolyte input interface A401 is provided on the anode end plate 4 at a position corresponding to the electrolyte transmission hole A, and the electrolyte input interface A401 is connected to the electrolyte transmission hole A. An electrolyte output interface A402 is provided on the anode end plate 4 at a position corresponding to the electrolyte transmission hole B, and the electrolyte output interface A402 is connected to the electrolyte transmission hole B. A coolant input interface A403 is provided on the anode end plate 4 at a position corresponding to the coolant input flow channel A, and the coolant input interface A403 is connected to the coolant input flow channel A. A coolant output interface A404 is provided on the anode end plate 4 at a position corresponding to the coolant output flow channel A, and the coolant output interface A404 is connected to the coolant output flow channel A.

[0036] An electrolyte flow field B is provided on one side of the cathode flow field plate 2 close to the membrane electrode 001. An electrolyte input flow channel B and an electrolyte output flow channel B respectively connected to the electrolyte flow field B are also provided on one side of the cathode flow field plate 2 close to the membrane electrode 001. An electrolyte transmission hole C 201 and an electrolyte transmission hole D 202 are provided on one side of the cathode flow field plate 2 away from the membrane electrode 001. The electrolyte transmission hole C 201 is connected to the electrolyte input flow channel B, and the electrolyte transmission hole D 202 is connected to the electrolyte output flow channel B. A coolant passage groove B 203 is recessed on one side of the cathode flow field plate 2 away from the membrane electrode 001. A coolant flow field B 204 is formed in the middle of the bottom surface of the coolant passage groove B 203. A coolant input flow channel B 205 is formed in the coolant passage groove B 203 and on one side of the coolant flow field B 204. A coolant passage groove B 203 is provided on one side of the coolant flow field B 204. A coolant output channel B 206 is formed on the other side of 204, and the coolant flow field B 204 is connected to the coolant input channel B 205 and the coolant output channel B 206 respectively.

[0037] An electrolyte input interface B101 is provided on the cathode end plate 1 at a position corresponding to the electrolyte transmission hole C201, and the electrolyte input interface B101 is connected to the electrolyte transmission hole C201. An electrolyte output interface B102 is provided on the cathode end plate 1 at a position corresponding to the electrolyte transmission hole D202, and the electrolyte output interface B102 is connected to the electrolyte transmission hole D202. A coolant input interface B103 is provided on the cathode end plate 1 at a position corresponding to the coolant input flow channel B205, and the coolant input interface B103 is connected to the coolant input flow channel B205. A coolant output interface B104 is provided on the cathode end plate 1 at a position corresponding to the coolant output flow channel B206, and the coolant output interface B104 is connected to the coolant output flow channel B206.

[0038] In this embodiment, the cathode end plate 1 and the anode end plate 4 are manufactured in basically the same manner, both using metal materials; the cathode flow field plate 2 and the anode flow field plate 3 are manufactured in basically the same manner, both using metal materials, wherein the flow fields at various locations on the cathode flow field plate 2 and the anode flow field plate 3 can be manufactured by existing technical means such as direct machining or additive manufacturing. In this embodiment, the electrolyte flow field A 301 and the electrolyte flow field B are both serpentine flow fields, and the coolant flow field A and the coolant flow field B 204 are both parallel flow fields. Since the electrolyte flow field and the coolant flow field on each flow field plate are arranged on the front and back sides of the same metal plate, the heat conduction can be more sufficient and the control of the electrolyte fluid temperature can be more stable.

[0039] After the cathode end plate 1, the cathode flow field plate 2, the anode flow field plate 3 and the anode end plate 4 are abutted and fixed together in sequence, the portion of the membrane electrode 001 located on one side of the sealing gasket 5 abuts against the electrolyte flow field A 301, the portion of the membrane electrode 001 located on the other side of the sealing gasket 5 abuts against the electrolyte flow field B, and the side of the anode flow field plate 3 close to the membrane electrode 001 and the side of the cathode flow field plate 2 close to the membrane electrode 001 are pressed against the sealing gasket 5. The sealing gasket 5 is used to prevent the electrolyte fluids in the cathode direction and the anode direction on both sides of the sealing gasket 5 from directly mixing with each other. In this embodiment, the sealing gasket 5 can be made of rubber material.

[0040] The electrolyte input interface A 401 is used to connect to an external electrolyte source A for inputting electrolyte to the anode flow field plate 3 through a pipeline, and the electrolyte output interface A 402 is used to connect the pipeline to export the electrolyte fluid in the anode flow field plate 3. The electrolyte fluid from the electrolyte source A enters the electrolyte input channel A 302 from the electrolyte input interface A 401 and the electrolyte transmission hole A in sequence, then enters the electrolyte flow field A 301 to react with the membrane electrode 001, and then flows out of the anode flow field plate 3 from the electrolyte output channel A 303, the electrolyte transmission hole B and the electrolyte output interface A 402 in sequence. Similarly, the electrolyte input interface B 101 is used to connect to an external electrolyte source B for inputting electrolyte to the cathode flow field plate 2 through a pipeline, and the electrolyte output interface B 102 is used to connect the pipeline to export the electrolyte fluid in the cathode flow field plate 2. The electrolyte fluid from the electrolyte source B sequentially enters the electrolyte input flow channel B from the electrolyte input interface B 101 and the electrolyte transmission hole C 201, then enters the electrolyte flow field B to react with the membrane electrode 001, and then sequentially flows out of the cathode flow field plate 2 from the electrolyte output flow channel B, the electrolyte transmission hole D 202 and the electrolyte output interface B 102. The settings of the external electrolyte source A and the electrolyte source B in this embodiment are both prior art.

[0041] The coolant input interface A 403 is used to connect to an external coolant source A for inputting coolant to the anode flow field plate 3 through a pipeline, and the coolant output interface A 404 is used to connect the pipeline to derive the coolant in the anode flow field plate 3. The coolant from the coolant source A enters the coolant input channel A from the coolant input interface A 403, then enters the coolant flow field A from the coolant input channel A, then flows from the coolant flow field A into the coolant output channel A, and finally flows out of the anode flow field plate 3 from the coolant output interface A404. Similarly, the coolant input interface B 103 is used to connect to an external coolant source B for inputting coolant to the cathode flow field plate 2 through a pipeline, and the coolant output interface B 104 is used to connect the pipeline to derive the coolant in the cathode flow field plate 2. The coolant from the coolant source B enters the coolant input channel B 205 from the coolant input interface B 103, then enters the coolant flow field B 204 from the coolant input channel B 205, then flows from the coolant flow field B 204 into the coolant output channel B 206, and finally flows out of the cathode flow field plate 2 from the coolant output interface B 104. By inputting coolant into the anode flow field plate 3 and the cathode flow field plate 2, respectively, the temperature of the positive and negative poles of the fixture structure can be adjusted to suit the test conditions. The settings of the external coolant source A and the coolant source B in this embodiment are both prior art, and the temperature, pressure, and flow rate of the output coolant can be controlled separately. The output coolant can be a cooling and heating medium such as water, ethylene glycol, heat transfer oil, and a mixture thereof; the coolant source A and the coolant source B are configured to output coolants of different temperatures respectively, so that the temperature of the positive and negative poles of the fixture structure can be controlled separately, so that it can be applied to test occasions where a temperature difference between the positive and negative poles is required.

[0042] Specifically, in this embodiment, conductive electrode ears 6 are extended from the outer peripheral surface of the cathode flow field plate 2 and the outer peripheral surface of the anode flow field plate 3 to facilitate the connection of external wires to energize and test the membrane electrode 001.

[0043] Specifically, in this embodiment, the electrolyte input interface A401, the electrolyte output interface A402, the coolant input interface A403, the coolant output interface A404, the electrolyte input interface B101, the electrolyte output interface B102, the coolant input interface B103, and the coolant output interface B104 are all provided with external threads for easy connection to external pipelines.

[0044] Specifically, in this embodiment, the axial centerline of the electrolyte input interface A 401 is collinear with the axial centerline of the electrolyte input interface B 101, the axial centerline of the electrolyte output interface A 402 is collinear with the axial centerline of the electrolyte output interface B 102, the axial centerline of the coolant input interface A 403 is collinear with the axial centerline of the coolant input interface B 103, the axial centerline of the coolant output interface A 404 is collinear with the axial centerline of the coolant output interface B 104, the axial centerline of the electrolyte input interface A 401 and the axial centerline of the electrolyte output interface A 402 are parallel to each other and on the same plane A, the axial centerline of the coolant input interface A 403 and the axial centerline of the coolant output interface A 404 are parallel to each other and on the same plane B, and plane A intersects plane B at a fixed angle. The processing and setting are easy, and it is convenient for users to connect external pipes. And the coolant can fully flow through the cathode flow field plate 2 or the anode flow field plate 3 and perform heat exchange.

[0045] Specifically, in this embodiment, the cathode end plate 1 is fixed to the cathode flow field plate 2 by screws, the anode end plate 4 is fixed to the anode flow field plate 3 by screws, and the sealing gasket 5 is fixed to the cathode flow field plate 2 or the anode flow field plate 3 by screws, so as to facilitate the subsequent integral fixing of the cathode end plate 1, the cathode flow field plate 2, the anode flow field plate 3 and the anode end plate 4. In this embodiment, the cathode end plate 1, the cathode flow field plate 2, the anode flow field plate 3 and the anode end plate 4 are fixed together by four groups of bolts 7 and nuts 8 that are arranged in coordination, and the bolts 7 of each group respectively pass through the anode end plate 4, the anode flow field plate 3, the cathode flow field plate 2 and the cathode end plate 1 in sequence, and then are threadedly connected with the nuts 8 of the same group, and the heads of the bolts 7 of each group are respectively clamped with the nuts 8 of the same group to form an integral body after the cathode end plate 1, the cathode flow field plate 2, the anode flow field plate 3 and the anode end plate 4 are abutted in sequence. When the bolts 7 and 8 used are made of metal materials to ensure reliable clamping force, four bolt through holes are opened on the outer periphery of the whole formed by the cathode end plate 1, the cathode flow field plate 2, the anode flow field plate 3 and the anode end plate 4 being abutted in sequence, and each bolt through hole is embedded with an insulating sleeve 9, and a bolt 7 is correspondingly inserted in each insulating sleeve 9, and an insulating gasket is provided between the head of each bolt 7 and the outer side surface of the adjacent anode end plate 4. In this embodiment, the insulating sleeve 9 and the insulating gasket can be made of insulating materials such as bakelite, nylon, PEek, and PVDF. Through the provision of the insulating sleeve 9 and the insulating gasket, the direct contact and conduction between the bolts 7 and the bolts 8 used and the whole formed by the cathode end plate 1, the cathode flow field plate 2, the anode flow field plate 3 and the anode end plate 4 being abutted in sequence can be avoided, so as to reduce the corrosion of the fixture structure and ensure the accuracy of the membrane electrode durability test.

[0046] Specifically, in this embodiment, an annular sealing groove A10 is provided on the peripheral position of the side surface of the cathode flow field plate 2 close to the membrane electrode and the annular sealing groove A10 is provided on the peripheral position of the side surface of the anode flow field plate 3 close to the membrane electrode, and an annular sealing line A is correspondingly embedded in each annular sealing groove A. An annular sealing groove B11 is provided on the peripheral position of the side surface of the cathode flow field plate 2 away from the membrane electrode and the annular sealing groove B11 is provided on the peripheral position of the side surface of the anode flow field plate 3 away from the membrane electrode, and an annular sealing line B is correspondingly embedded in each annular sealing groove B, which are respectively used to form reliable seals between the cathode end plate 1 and the cathode flow field plate 2, between the cathode flow field plate 2 and the sealing gasket 5, between the sealing gasket 5 and the anode flow field plate 3, and between the anode flow field plate 3 and the anode end plate 4, so as to prevent the electrolyte fluid or coolant from leaking from the gaps in the clamp structure.

Claims

1. A membrane electrode fixture structure for an electrolyzer that can be used for independent temperature control of anode and cathode, characterized in that: It comprises a cathode end plate (1), a cathode flow field plate (2), an anode flow field plate (3) and an anode end plate (4) which are abutted in sequence, and also comprises a sealing gasket (5) sleeved on the outside of the membrane electrode, wherein the integral structure formed by the sealing gasket (5) and the membrane electrode is located between the cathode flow field plate (2) and the anode flow field plate (3); An electrolyte flow field A (301) is provided on one side of the anode flow field plate (3) close to the membrane electrode, and an electrolyte input flow channel A (302) and an electrolyte output flow channel A (303) respectively connected to the electrolyte flow field A (301) are also provided on one side of the anode flow field plate (3) close to the membrane electrode. An electrolyte transmission hole A and an electrolyte transmission hole B are provided on one side of the anode flow field plate (3) away from the membrane electrode, and the electrolyte transmission hole A is connected to the electrolyte input flow channel A (302), and the electrolyte transmission hole B is connected to the electrolyte output flow channel A (303). A cooling liquid passage groove A is recessed on one side of the anode flow field plate (3) away from the membrane electrode, and a cooling liquid flow field A is formed at the middle position of the bottom surface of the cooling liquid passage groove A. The cooling liquid passage groove A forms a cooling liquid input flow channel A on one side of the cooling liquid flow field A, and the cooling liquid passage groove A forms a cooling liquid output flow channel A on the other side of the cooling liquid flow field A. An electrolyte input interface A (401) is provided on the anode end plate (4) at a position corresponding to the electrolyte transmission hole A, and the electrolyte input interface A (401) is connected to the electrolyte transmission hole A. An electrolyte output interface A (402) is provided on the anode end plate (4) at a position corresponding to the electrolyte transmission hole B, and the electrolyte output interface A (402) is connected to the electrolyte transmission hole B. A coolant input interface A (403) is provided on the anode end plate (4) at a position corresponding to the coolant input flow channel A, and the coolant input interface A (403) is connected to the coolant input flow channel A. A coolant output interface A (404) is provided on the anode end plate (4) at a position corresponding to the coolant output flow channel A, and the coolant output interface A (404) is connected to the coolant output flow channel A. An electrolyte flow field B is provided on one side of the cathode flow field plate (2) close to the membrane electrode, and an electrolyte input flow channel B and an electrolyte output flow channel B respectively connected to the electrolyte flow field B are provided on one side of the cathode flow field plate (2) close to the membrane electrode. An electrolyte transmission hole C (201) and an electrolyte transmission hole D (202) are provided on one side of the cathode flow field plate (2) away from the membrane electrode, and the electrolyte transmission hole C (201) is connected to the electrolyte input flow channel B, and the electrolyte transmission hole D (202) is connected to the electrolyte flow field B. The electrolyte output flow channel B is connected, a cooling liquid passage groove B (203) is concavely provided on a side surface of the cathode flow field plate (2) away from the membrane electrode, a cooling liquid flow field B (204) is formed at the middle position of the bottom surface of the cooling liquid passage groove B (203), a cooling liquid input flow channel B (205) is formed in the cooling liquid passage groove B (203) and on one side of the cooling liquid flow field B (204), and a cooling liquid output flow channel B (206) is formed in the cooling liquid passage groove B (203) and on the other side of the cooling liquid flow field B (204); An electrolyte input interface B (101) is provided on the cathode end plate (1) at a position corresponding to the electrolyte transmission hole C (201), and the electrolyte input interface B (101) is connected to the electrolyte transmission hole C (201); an electrolyte output interface B (102) is provided on the cathode end plate (1) at a position corresponding to the electrolyte transmission hole D (202), and the electrolyte output interface B (102) is connected to the electrolyte transmission hole D (202); a coolant input interface B (103) is provided on the cathode end plate (1) at a position corresponding to the coolant input flow channel B (205), and the coolant input interface B (103) is connected to the coolant input flow channel B (205); a coolant output interface B (104) is provided on the cathode end plate (1) at a position corresponding to the coolant output flow channel B (206), and the coolant output interface B (104) is connected to the coolant output flow channel B (206); After the cathode end plate (1), cathode flow field plate (2), anode flow field plate (3) and anode end plate (4) are sequentially abutted and fixed together, the portion of the membrane electrode located on one side of the sealing gasket (5) abuts against the electrolyte flow field A (301), and the portion of the membrane electrode located on the other side of the sealing gasket (5) abuts against the electrolyte flow field B, and the side surface of the anode flow field plate (3) close to the membrane electrode and the side surface of the cathode flow field plate (2) close to the membrane electrode are pressed against the sealing gasket (5).

2. The electrolytic cell membrane electrode fixture structure that can be used for independent temperature control of anode and cathode according to claim 1 is characterized in that: Conductive electrode ears (6) are extended from the outer peripheral surface of the cathode flow field plate (2) and the outer peripheral surface of the anode flow field plate (3).

3. The electrolytic cell membrane electrode fixture structure that can be used for independent temperature control of anode and cathode according to claim 1 is characterized in that: The electrolyte input interface A (401), the electrolyte output interface A (402), the coolant input interface A (403), the coolant output interface A (404), the electrolyte input interface B (101), the electrolyte output interface B (102), the coolant input interface B (103), and the coolant output interface B (104) are all provided with external threads.

4. The electrolytic cell membrane electrode fixture structure for independent temperature control of anode and cathode according to claim 1, characterized in that: The axial centerline of the electrolyte input interface A (401) is collinear with the axial centerline of the electrolyte input interface B (101), the axial centerline of the electrolyte output interface A (402) is collinear with the axial centerline of the electrolyte output interface B (102), the axial centerline of the coolant input interface A (403) is collinear with the axial centerline of the coolant input interface B (103), and the axial centerline of the coolant output interface A (404) is collinear with the axial centerline of the coolant output interface B (104).

5. The electrolytic cell membrane electrode fixture structure that can be used for independent temperature control of anode and cathode according to claim 4 is characterized in that: The axial center line of the electrolyte input interface A (401) and the axial center line of the electrolyte output interface A (402) are parallel to each other and on the same plane A, the axial center line of the coolant input interface A (403) and the axial center line of the coolant output interface A (404) are parallel to each other and on the same plane B, and the plane A intersects the plane B at a fixed angle.

6. The electrolytic cell membrane electrode fixture structure for independent temperature control of anode and cathode according to claim 1, characterized in that: The cathode end plate (1) and the cathode flow field plate (2) are fixed by screws, the anode end plate (4) and the anode flow field plate (3) are fixed by screws, and the sealing gasket (5) is fixed to the cathode flow field plate (2) or the anode flow field plate (3) by screws.

7. The electrolytic cell membrane electrode fixture structure for independent temperature control of anode and cathode according to claim 1, characterized in that: The cathode end plate (1), cathode flow field plate (2), anode flow field plate (3) and anode end plate (4) are fixed together by a plurality of groups of bolts (7) and nuts (8) arranged in coordination with each other. The bolts (7) of each group respectively pass through the anode end plate (4), anode flow field plate (3), cathode flow field plate (2) and cathode end plate (1) in sequence, and are then threadedly connected with the nuts (8) of the same group. The heads of the bolts (7) of each group respectively clamp the cathode end plate (1), cathode flow field plate (2), anode flow field plate (3) and anode end plate (4) in sequence with the nuts (8) of the same group to form a whole.

8. The electrolytic cell membrane electrode fixture structure that can be used for independent temperature control of anode and cathode according to claim 7 is characterized in that: The cathode end plate (1), the cathode flow field plate (2), the anode flow field plate (3) and the anode end plate (4) are sequentially abutted to form a whole with a plurality of bolt through holes on the outer periphery, each of the bolt through holes is embedded with an insulating sleeve (9), each of the insulating sleeves (9) is correspondingly penetrated with a bolt (7), and an insulating gasket is provided between the head of each bolt (7) and the outer side surface of the adjacent cathode end plate (1) or the outer side surface of the adjacent anode end plate (4).

9. The electrolytic cell membrane electrode fixture structure for independent temperature control of anode and cathode according to claim 1, characterized in that: The electrolyte flow field A (301) and the electrolyte flow field B are both serpentine flow fields, interdigitated flow fields, parallel flow fields or point flow fields, and the coolant flow field A and the coolant flow field B (204) are both serpentine flow fields, interdigitated flow fields, parallel flow fields or point flow fields.

10. The electrolytic cell membrane electrode fixture structure for independent temperature control of anode and cathode according to claim 1, characterized in that: An annular sealing wire groove A (10) is provided at the peripheral position on the side surface of the cathode flow field plate (2) close to the membrane electrode and an annular sealing wire groove A (10) is provided at the peripheral position on the side surface of the anode flow field plate (3) close to the membrane electrode, and an annular sealing wire A is correspondingly embedded in each of the annular sealing wire grooves A; an annular sealing wire groove B (11) is provided at the peripheral position on the side surface of the cathode flow field plate (2) away from the membrane electrode and an annular sealing wire groove B (11) is provided at the peripheral position on the side surface of the anode flow field plate (3) away from the membrane electrode, and an annular sealing wire groove B (11) is correspondingly embedded in each of the annular sealing wire grooves B.

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