Electrochemical battery testing device

Abstract

The utility model discloses an electrochemical battery testing device, and belongs to the technical field of electrochemical devices.The electrochemical battery testing device comprises a membrane electrode, a clamping assembly and a fastener, the clamping assembly clamps the membrane electrode from the two sides of the membrane electrode and is connected and fixed through the fastener, and the clamping assembly comprises an anode end plate and a cathode end plate; the side, facing the membrane electrode, of the anode end plate is provided with a first flow channel structure, the side, deviating from the membrane electrode, of the anode end plate is provided with a second flow channel structure, the second flow channel structure comprises a plurality of branch flow channels and a mixing cavity, the inlet end of each branch flow channel is connected with an anode medium pump, and the outlet ends of the branch flow channels communicate with the mixing cavity at the same time; the outlet end of the mixing cavity is communicated with the first runner structure; a third flow channel structure is arranged on one side, facing the membrane electrode, of the cathode end plate, and the inlet end of the third flow channel structure is connected with the cathode medium pump; the concentration of the anode side reaction medium can be adjusted in real time, and the requirements of complex test working conditions are met.

Description

Technical Field

[0001] This application relates to the field of electrochemical device technology, and more specifically, to an electrochemical battery testing device. Background Technology

[0002] An electrochemical battery is a device that converts chemical energy into electrical energy. Its working principle is based on electrochemical reactions, specifically generating current through redox reactions. Current electrochemical battery testing devices are inconvenient for real-time adjustment of the reaction medium concentration, making it difficult to meet the demands of complex testing conditions. Utility Model Content

[0003] This application aims to provide an electrochemical cell testing device, which solves the problem of inconvenient adjustment of the concentration of the reaction medium in the prior art.

[0004] An electrochemical cell testing device includes a membrane electrode, a clamping assembly, and fasteners;

[0005] The clamping assembly clamps the membrane electrode from both sides, and the clamping assembly and the membrane electrode are connected and locked together by the fasteners; the clamping assembly includes an anode plate and a cathode plate, which are disposed in close contact with both sides of the membrane electrode;

[0006] The anode end plate has a first flow channel structure on the side facing the membrane electrode, and a second flow channel structure on the side facing away from the membrane electrode. The second flow channel structure includes branch channels and a mixing chamber. Multiple branch channels are provided, and the inlet end of each branch channel is connected to an anode medium pump. The outlet ends of the multiple branch channels are simultaneously connected to the mixing chamber, and the outlet end of the mixing chamber is connected to the first flow channel structure. The cathode end plate has a third flow channel structure on the side facing the membrane electrode, and the inlet end of the third flow channel structure is connected to a cathode medium pump.

[0007] Optionally, the anode end plate has a flow channel groove and an anode cover plate for sealing the flow channel groove on the side opposite to the membrane electrode; the branch flow channel is formed in the flow channel groove, and the gap between the anode cover plate and the flow channel groove forms the mixing chamber; the anode cover plate is connected to the anode end plate.

[0008] Optionally, the anode cover plate and the anode end plate are sealed together.

[0009] Optionally, the branch channel is provided with an anti-backflow structure.

[0010] Optionally, the anode cover plate is provided with a plurality of first inlet connectors corresponding to the inlet ends of the plurality of branch flow channels, and the plurality of first inlet connectors are respectively connected to the plurality of anode medium pumps; the anode end plate is provided with a first outlet connector corresponding to the outlet end of the first flow channel structure, and the first outlet connector is connected to a first liquid guide pipe.

[0011] Optionally, a second inlet connector is provided on the cathode end plate corresponding to the inlet end of the third flow channel structure, and the second inlet connector is connected to the cathode medium pump; a second outlet connector is provided on the cathode end plate corresponding to the outlet end of the third flow channel structure, and the second outlet connector is connected to the second liquid guide pipe.

[0012] Optionally, both the anode and cathode end plates are provided with temperature measuring holes, and temperature measuring elements are installed in the temperature measuring holes. The temperature measuring elements are used to measure the real-time temperature in the first flow channel structure or the third flow channel structure.

[0013] Optionally, the clamping assembly further includes a first support plate, a first insulating plate, a second support plate, and a second insulating plate; the first support plate is disposed in close contact with the side of the anode end plate opposite to the membrane electrode, and the first insulating plate is disposed in close contact with the side of the first support plate opposite to the anode end plate; the second support plate is disposed in close contact with the side of the cathode end plate opposite to the membrane electrode, and the second insulating plate is disposed in close contact with the side of the second support plate opposite to the cathode end plate.

[0014] Optionally, both the first support plate and the second support plate have a boss at their bottom, and the male end plate and the female end plate are placed on the boss.

[0015] Optionally, the anode end plate and the membrane electrode are sealed together.

[0016] Beneficial effects:

[0017] The electrochemical cell testing apparatus described in this application includes a membrane electrode assembly (MEA), a clamping assembly, and fasteners. The clamping assembly clamps the MEA from both sides and fixes it in place using fasteners. The clamping assembly includes an anode end plate and a cathode end plate disposed close to both sides of the MEA. A first flow channel structure is disposed on the side of the anode end plate facing the MEA, and a second flow channel structure is disposed on the side away from the MEA. The second flow channel structure includes multiple branch channels and a mixing chamber. The inlet end of each branch channel is connected to an anode medium pump, and the outlet ends of the multiple branch channels are simultaneously connected to the mixing chamber, the outlet end of which is connected to the first flow channel structure. A third flow channel structure is disposed on the side of the cathode end plate facing the MEA, and the inlet end of the third flow channel structure is connected to a cathode medium pump. In this application, by setting the second flow channel structure, multiple branch channels can be connected to different anode medium pumps respectively, thus meeting the supply of multiple medium solutions on the anode side. Furthermore, the flow rate of each medium can be individually controlled by the corresponding anode medium pump, thereby enabling concentration adjustment and thermal management of the multiple medium solutions on the anode side, meeting the testing requirements of complex testing conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of an electrochemical battery testing apparatus according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of an electrochemical battery testing device after installation according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the anode end plate facing away from the membrane electrode in an embodiment of the electrochemical cell testing device proposed in this application;

[0022] Figure 4 This is a schematic diagram of the structure of the electrochemical battery testing device proposed in one embodiment of this application, showing the anode end plate facing the membrane electrode side.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Membrane electrode; 2. Anode end plate; 21. First flow channel structure; 22. Second flow channel structure; 221. Branch flow channel; 23. Flow channel groove; 24. Anode cover plate; 25. Socket head bolt; 26. First inlet connector; 27. First outlet connector; 3. Cathode end plate; 31. Third flow channel structure; 32. Second inlet connector; 33. Second outlet connector; 41. Temperature measuring hole; 42. Electrode tab; 51. First support plate; 52. First insulating plate; 53. Second support plate; 54. Second insulating plate; 6. Boss; 71. First sealing ring; 72. Second sealing ring; 73. Third sealing ring; 81. Locking bolt; 82. Nut. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In current electrochemical battery testing devices, a reaction medium inlet is located on the anode plate. This inlet supplies the anode reaction medium to the flow channel inside the anode plate for participation in the electrochemical reaction. However, in some complex testing conditions, the anode medium often consists of multiple media. In such cases, these media need to be mixed beforehand and then supplied through the inlet. As the experiment progresses, if the concentration of the anode solution needs to be changed, it must be prepared anew, which is not only inconvenient but also wastes the medium. Therefore, current electrochemical battery testing devices suffer from the problems of inconvenient adjustment of reaction medium concentration and difficulty in meeting the requirements of complex testing conditions.

[0027] In view of this, embodiments of this application propose an electrochemical battery testing device.

[0028] See Figure 1 An electrochemical cell testing device includes a membrane electrode 1, a clamping assembly, and fasteners;

[0029] The clamping assembly clamps the membrane electrode 1 from both sides, and the clamping assembly and the membrane electrode 1 are connected and locked together by the fasteners; the clamping assembly includes an anode plate 2 and a cathode plate 3, which are disposed close to both sides of the membrane electrode 1.

[0030] The anode plate 2 has a first flow channel structure 21 on the side facing the membrane electrode 1, and a second flow channel structure 22 on the side away from the membrane electrode 1. The second flow channel structure 22 includes branch flow channels 221 and a mixing chamber. Multiple branch flow channels 221 are provided, and the inlet end of each branch flow channel 221 is connected to an anode medium pump. The outlet ends of multiple branch flow channels 221 are simultaneously connected to the mixing chamber, and the outlet end of the mixing chamber is connected to the first flow channel structure 21. The cathode plate 3 has a third flow channel structure 31 on the side facing the membrane electrode 1, and the inlet end of the third flow channel structure 31 is connected to a cathode medium pump.

[0031] Specifically, the clamping assembly may include a first clamping assembly and a second clamping assembly. The membrane electrode 1 is placed between the first clamping assembly and the second clamping assembly. The first clamping assembly and the second clamping assembly clamp the membrane electrode 1 from both sides, respectively. Fasteners pass through the first clamping assembly, the membrane electrode 1, and the second clamping assembly in sequence to connect and lock the three together, thereby achieving the installation and fixation of the membrane electrode 1. The first clamping assembly includes an anode end plate 2, and the second clamping assembly includes a cathode end plate 3. The anode end plate 2 and the cathode end plate 3 are respectively disposed in close contact with both sides of the membrane electrode 1.

[0032] See Figure 3 and Figure 4 A first flow channel structure 21 is provided on the side of the anode end plate 2 facing the membrane electrode 1, and a second flow channel structure 22 is provided on the side of the anode end plate 2 away from the membrane electrode 1. The second flow channel structure 22 includes multiple parallel branch flow channels 221 and a mixing chamber. The inlet ends of the multiple branch flow channels 221 are respectively connected to multiple anode medium pumps, and the outlet ends of the multiple branch flow channels 221 are simultaneously connected to the mixing chamber. The outlet end of the mixing chamber communicates with the first flow channel structure 21. The anode medium pumps can supply the reaction medium required by the anode side to the first flow channel structure 21 through the second flow channel structure 22. With the second flow channel structure 22, multiple anode medium pumps can input different media into the multiple branch flow channels 221 respectively. After the multiple media enter the mixing chamber through the different branch flow channels 221, they are mixed and then flow into the first flow channel structure 21 to participate in the electrochemical reaction. A third flow channel structure 31 is provided on the side of the cathode end plate 3 facing the membrane electrode 1. The inlet end of the third flow channel structure 31 is connected to the cathode medium pump, which can supply the reaction medium required by the cathode side to the third flow channel structure 31.

[0033] With multiple branch channels 221, the second channel structure 22 has multiple media inlets, which can meet the supply of multi-media solutions on the anode side. At the same time, the multiple media inlets are connected to different anode media pumps. The feeding rate and flow rate of each medium can be controlled individually by the corresponding anode media pump. This allows for flexible adjustment of the concentration and thermal management of the multi-media solution on the anode side according to experimental requirements, meeting the needs of complex test conditions, improving the utilization rate of the medium, and reducing waste.

[0034] As an optional implementation, in this embodiment, the number of branch channels 221 is set to three, so the second channel structure 22 has three media inlets, which can realize the supply of three different media on the anode side, including both gas-phase reaction media and liquid-phase reaction media. The anode medium pump can be a micro-liquid pump, and the cathode medium pump can be a gas-liquid pump.

[0035] Optionally, the branch channel 221 is provided with an anti-backflow structure.

[0036] Specifically, an anti-backflow structure is provided in the branch channel 221 to prevent the reaction medium from flowing back. In this embodiment, the branch channel 221 adopts the same structure as the flow channel of the Tesla valve, which can effectively prevent backflow.

[0037] Optionally, the anode end plate 2 is provided with a flow channel groove 23 and an anode cover plate 24 for closing the flow channel groove 23 on the side opposite to the membrane electrode 1; the branch flow channel 221 is formed in the flow channel groove 23, and the gap between the anode cover plate 24 and the flow channel groove 23 forms the mixing chamber; the anode cover plate 24 is connected to the anode end plate 2.

[0038] For details, see Figure 1 In this embodiment, to facilitate the processing of the flow channels, a flow channel groove 23 is provided on the side of the anode end plate 2 facing away from the membrane electrode 1, and branch flow channels 221 are formed in the flow channel groove 23. An anode cover plate 24, adapted to the size of the groove, is also provided at the opening of the corresponding flow channel groove 23. The anode cover plate 24 covers the opening of the flow channel groove 23 and is connected and fixed to the anode end plate 2, thereby achieving the closure of the flow channel groove 23. After the flow channel groove 23 is closed, the gap between the anode cover plate 24 and the flow channel groove 23 forms a mixing chamber, allowing the various media flowing out from each branch flow channel 221 to mix within the mixing chamber.

[0039] Optionally, the anode cover plate 24 and the anode end plate 2 are detachably connected. Specifically, in this embodiment, the anode cover plate 24 and the anode end plate 2 are connected and fixed using hexagon socket head cap bolts 25.

[0040] Optionally, the anode cover plate 24 and the anode end plate 2 are sealed together.

[0041] Specifically, in this embodiment, a first sealing ring 71 is provided in the flow channel groove 23. When the anode cover plate 24 is installed, the first sealing ring 71 is deformed by squeezing it to fill the connection gap between the anode cover plate 24 and the anode end plate 2, thereby achieving a sealed connection between the anode cover plate 24 and the anode end plate 2, preventing the medium solution in the second flow channel structure 22 from leaking from the gap and ensuring the safety of the experiment. To further improve the sealing performance, sealant can be used to adhere the first sealing ring 71 to the flow channel groove 23 to ensure that the first sealing ring 71 is installed firmly and reliably.

[0042] Optionally, the anode cover plate 24 is provided with a plurality of first inlet connectors 26 corresponding to the inlet ends of the plurality of branch flow channels 221, and the plurality of first inlet connectors 26 are respectively connected to the plurality of anode medium pumps; the anode end plate 2 is provided with a first outlet connector 27 corresponding to the outlet end of the first flow channel structure 21, and the first outlet connector 27 is connected to the first liquid guide pipe.

[0043] For details, see Figure 3 and Figure 2 In this embodiment, the anode cover plate 24 is provided with three first inlet connectors 26 corresponding to the inlet ends of the three branch flow channels 221. These three first inlet connectors 26 serve as inlets for the anode reaction medium and are connected to three anode medium pumps respectively. This allows for the supply of three different media to the second flow channel structure 22. After mixing in the mixing chamber of the second flow channel structure 22, the three media enter the first flow channel structure 21 and participate in the electrochemical reaction. (See also...) Figure 4 and Figure 2 The first flow channel structure 21 adopts a serpentine flow channel. A first outlet connector 27 is provided on the anode end plate 2 corresponding to the outlet end of the first flow channel structure 21. The first outlet connector 27 serves as the outlet of the anode reaction medium and is connected to the first liquid guide pipe, so that the anode medium after the electrochemical reaction can be discharged through the first liquid guide pipe.

[0044] Optionally, a second inlet connector 32 is provided on the cathode end plate 3 corresponding to the inlet end of the third flow channel structure 31, and the second inlet connector 32 is connected to the cathode medium pump; a second outlet connector 33 is provided on the cathode end plate 3 corresponding to the outlet end of the third flow channel structure 31, and the second outlet connector 33 is connected to the second liquid guide pipe.

[0045] Specifically, a second inlet connector 32 is provided on the cathode end plate 3 at the inlet end corresponding to the third flow channel structure 31. The second inlet connector 32 serves as the inlet for the cathode reaction medium and is connected to the cathode medium pump, enabling the supply of the cathode reaction medium to the third flow channel structure 31. The third flow channel structure 31 also adopts a serpentine flow channel. A second outlet connector 33 is provided on the cathode end plate 3 at the outlet end corresponding to the third flow channel structure 31. The second outlet connector 33 serves as the outlet for the cathode reaction medium and is connected to the second liquid guide pipe. The cathode medium after the electrochemical reaction can be discharged through the second liquid guide pipe.

[0046] Optionally, both the anode plate 2 and the cathode plate 3 are provided with temperature measuring holes 41, and temperature measuring elements are installed in the temperature measuring holes 41. The temperature measuring elements are used to measure the real-time temperature in the first flow channel structure 21 or the third flow channel structure 31.

[0047] For details, see Figure 2 Each of the anode plate 2 and cathode plate 3 is provided with a temperature measuring hole 41. A temperature measuring element can be inserted into the temperature measuring hole 41 to measure the real-time temperature of the first flow channel structure 21 in the anode plate 2 or the real-time temperature of the third flow channel structure 31 in the cathode plate 3. This allows for convenient adjustment of the electrolytic cell temperature by controlling the flow rate of the anode medium. Normally, a faster medium flow rate carries away more heat, causing the electrolytic cell temperature to drop. If the measured current temperature of the electrolytic cell is too low, the medium flow rate can be appropriately slowed down by the anode medium pump to reduce heat loss. Conversely, if the measured current temperature of the electrolytic cell is too high, the medium flow rate can be appropriately increased, thereby achieving real-time control of the electrolytic cell temperature. As an optional implementation, a thermocouple can be used as the temperature measuring element.

[0048] Optionally, the clamping assembly further includes a first support plate 51, a first insulating plate 52, a second support plate 53, and a second insulating plate 54; the first support plate 51 is disposed in close contact with the side of the anode end plate 2 facing away from the membrane electrode 1, and the first insulating plate 52 is disposed in close contact with the side of the first support plate 51 facing away from the anode end plate 2; the second support plate 53 is disposed in close contact with the side of the cathode end plate 3 facing away from the membrane electrode 1, and the second insulating plate 54 is disposed in close contact with the side of the second support plate 53 facing away from the cathode end plate 3.

[0049] For details, see Figure 1The first support assembly also includes a first support plate 51 and a first insulating plate 52. The first support plate 51 is closely attached to the side of the anode end plate 2 away from the membrane electrode 1, and the first insulating plate 52 is closely attached to the side of the first support plate 51 away from the anode end plate 2. Both the first support plate 51 and the first insulating plate 52 adopt a rectangular frame structure. The hollow area of ​​the frame structure can provide clearance for the installation of the first inlet connector 26 and the first outlet connector 27, which facilitates the connection of the anode medium pump and the first liquid guide pipe.

[0050] The second support assembly also includes a second support plate 53 and a second insulating plate 54. The second support plate 53 is disposed close to the side of the cathode end plate 3 facing away from the membrane electrode 1, and the second insulating plate 54 is disposed close to the side of the second support plate 53 facing away from the cathode end plate 3. The second support plate 53 and the second insulating plate 54 also adopt a rectangular frame structure. The hollow area of ​​the frame structure can provide clearance for the installation of the second inlet connector 32 and the second outlet connector 33, facilitating the connection of the cathode medium pump and the second liquid guide pipe.

[0051] Optionally, both the bottom of the first support plate 51 and the second support plate 53 are provided with protrusions 6, and the male end plate 2 and the female end plate 3 are placed on the protrusions 6.

[0052] See Figure 2 Both the first support plate 51 and the second support plate 53 have protrusions 6 at their bottoms. During installation, the anode plate 2 and the cathode plate 3 are placed on the protrusions 6. By setting the protrusions 6, the bottoms of the anode plate 2 and the cathode plate 3 can be raised, so that the anode plate 2 and the cathode plate 3 are suspended in the air. This avoids the anode plate 2 and the cathode plate 3 from directly contacting the experimental table surface, and prevents the leakage of the medium in extreme cases from causing the anode medium and the cathode medium to contact the table surface and undergo an electrochemical reaction, resulting in a short circuit. This improves the safety of the experiment.

[0053] Optionally, the anode plate 2 and the membrane electrode 1 are sealed together, and the cathode plate 3 and the membrane electrode 1 are sealed together.

[0054] Specifically, a sealing groove is provided on the side of the anode plate 2 facing the membrane electrode 1, and a second sealing ring 72 is installed in the sealing groove. During installation, the second sealing ring 72 is deformed by squeezing and tightly filled into the connection gap between the anode plate 2 and the membrane electrode 1, which can achieve a sealed fit between the anode plate 2 and the membrane electrode 1, preventing the medium solution in the first flow channel structure 21 from leaking out of the connection gap between the anode plate 2 and the membrane electrode 1, and ensuring the safety of the experiment. Similarly, a sealing groove is also provided on the side of the cathode plate 3 facing the membrane electrode 1, and a second sealing ring 72 is installed in the sealing groove, which can achieve a sealed fit between the cathode plate 3 and the membrane electrode 1, preventing the medium solution in the third flow channel structure 31 from leaking out. To further improve the sealing performance, sealant can be used to attach the second sealing ring 72 and the third sealing ring 73 to their respective installation sealing grooves to ensure a firm and reliable installation.

[0055] Optionally, tabs 42 are provided on both the anode plate 2 and the cathode plate 3, and voltage can be easily applied for testing through the two tabs 42.

[0056] Optionally, in this embodiment, the fastener includes multiple locking bolts 81 and multiple nuts 82 that cooperate with the locking bolts 81. The locking bolts 81 are provided with an insulating layer. During installation, the membrane electrode 1 to be tested is first placed between the anode end plate 2 and the cathode end plate 3. Then, the locking bolts 81 are used to pass through the first insulating plate 52, the first support plate 51, the anode end plate 2, the membrane electrode 1, the cathode end plate 3, the second support plate 53, and the second insulating plate 54 in sequence, and the entire device is locked and fixed with the nuts 82.

[0057] The electrochemical cell testing device provided in this embodiment, during use, involves fastening the membrane electrode 1 to the clamping assembly with fasteners. A DC power supply is connected to the tabs 42 of the anode plate 2 and cathode plate 3. The first inlet connector 26 on the anode plate 2 is connected to a micro-liquid pump, and the first outlet connector 27 is connected to a first liquid guide tube. The second inlet connector 32 on the cathode plate 3 is connected to a gas-liquid pump, and the second outlet connector 33 is connected to a second liquid guide tube. A thermocouple is inserted into the temperature measuring hole 41. During testing, the micro-liquid pump and the gas-liquid pump are turned on for a period of time to ensure the membrane electrode 1 is sufficiently moistened. Then, a voltage is applied to the two tabs 42 of the anode plate 2 and cathode plate 3 for testing. The current temperature of the electrolytic cell can be measured in real time using the thermocouple. During the test, the flow rate of the micro-liquid pump can be adjusted at any time to change the concentration of the reaction medium on the anode side and the temperature of the electrolytic cell. After the test, the applied voltage is first disconnected, then the micro-liquid pump and the gas-liquid pump are stopped, and inert gas is introduced for purging. Finally, the clamping assembly is disassembled, and the membrane electrode 1 is removed.

[0058] The electrochemical cell testing device provided in this embodiment can be applied to the fields of organic electrosynthesis and wastewater treatment, and is not limited to the types of organic matter used. In the field of organic electrosynthesis, organic matter is selectively oxidized to generate high-value-added products, such as those used in the synthesis of adiponitrile.

[0059]

[0060] In the field of wastewater treatment, organic matter is directly oxidized and decomposed on the anode surface, which can treat cyanide-containing wastewater, dye wastewater, drug residues, etc.

[0061] The electrochemical cell testing device provided in this application can supply different reaction media on the anode side, including both gaseous and liquid phases. The concentration of the anode reaction media and the real-time temperature of the electrolyzer can be adjusted at any time according to the experiment, thereby improving the utilization rate of the reaction media and ensuring the safety of the experiment. It can be applied in electrochemical fields including but not limited to water electrolysis for hydrogen production, CO2 reduction testing, organic electrosynthesis, wastewater treatment, and electrochemical sensors, replacing traditional H-type electrolyzers and PEM (Proton Exchange Membrane) electrolyzers.

[0062] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not preclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0064] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. An electrochemical cell testing apparatus, characterized by, include: Membrane electrodes, clamping components, and fasteners; The clamping assembly clamps the membrane electrode from both sides, and the clamping assembly and the membrane electrode are connected and locked together by the fasteners; the clamping assembly includes an anode plate and a cathode plate, which are disposed in close contact with both sides of the membrane electrode; The anode end plate has a first flow channel structure on the side facing the membrane electrode, and a second flow channel structure on the side facing away from the membrane electrode. The second flow channel structure includes branch flow channels and a mixing chamber. Multiple branch flow channels are provided, and the inlet end of each branch flow channel is connected to an anode medium pump. The outlet ends of multiple branch flow channels are simultaneously connected to the mixing chamber, and the outlet end of the mixing chamber is connected to the first flow channel structure. The cathode end plate is provided with a third flow channel structure on the side facing the membrane electrode, and the inlet end of the third flow channel structure is connected to the cathode dielectric pump.

2. The electrochemical cell testing device according to claim 1, characterized in that: The anode end plate has a flow channel groove and an anode cover plate for sealing the flow channel groove on the side opposite to the membrane electrode; the branch flow channel is formed in the flow channel groove, and the gap between the anode cover plate and the flow channel groove forms the mixing chamber; the anode cover plate is connected to the anode end plate.

3. The electrochemical cell testing device according to claim 2, characterized in that: The anode cover plate and the anode end plate are sealed together.

4. The electrochemical cell testing device according to claim 1 or 2, characterized in that: The branch flow channel is equipped with an anti-backflow structure.

5. The electrochemical cell testing device according to claim 2, characterized in that: The anode cover plate is provided with a plurality of first inlet connectors corresponding to the inlet ends of the plurality of branch channels, and the plurality of first inlet connectors are respectively connected to the plurality of anode medium pumps; The anode plate is provided with a first outlet connector at the outlet end corresponding to the first flow channel structure, and the first outlet connector is connected to the first liquid guide tube.

6. The electrochemical cell testing device according to claim 1, characterized in that: A second inlet connector is provided on the cathode end plate corresponding to the inlet end of the third flow channel structure, and the second inlet connector is connected to the cathode medium pump. A second outlet connector is provided on the cathode end plate corresponding to the outlet end of the third flow channel structure, and the second outlet connector is connected to the second liquid guide tube.

7. The electrochemical cell testing device according to claim 1, characterized in that: Temperature measuring holes are provided on both the anode and cathode end plates, and temperature measuring elements are installed in the temperature measuring holes. The temperature measuring elements are used to measure the real-time temperature in the first flow channel structure or the third flow channel structure.

8. The electrochemical cell testing device according to claim 1, characterized in that: The clamping assembly further includes a first support plate, a first insulating plate, a second support plate, and a second insulating plate; The first support plate is closely arranged on the side of the anode end plate away from the membrane electrode, and the first insulating plate is closely arranged on the side of the first support plate away from the anode end plate. The second support plate is closely arranged on the side of the cathode end plate away from the membrane electrode, and the second insulating plate is closely arranged on the side of the second support plate away from the cathode end plate.

9. The electrochemical cell testing device according to claim 8, wherein: The first support plate and the bottom of the second support plate are provided with bosses, and the anode end plate and the cathode end plate are placed on the bosses.

10. The electrochemical cell testing device according to claim 1, wherein: The anode end plate and the membrane electrode are sealingly fitted, and the cathode end plate and the membrane electrode are sealingly fitted.

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