CN114689671A - Electrochemical reaction apparatus - Google Patents

Abstract

The present disclosure provides an electrochemical reaction apparatus including: a frame; the electrochemical device is arranged on the rack and comprises a first polar plate and a second polar plate, the first polar plate is provided with a first reaction cavity, the second polar plate is provided with a second reaction cavity, and the first reaction cavity and the second reaction cavity form a reaction space of an electrochemical reaction; and the storage device comprises a storage part, the storage part is provided with a first accommodating cavity, a second accommodating cavity, a first fluid inlet and a second fluid inlet, the first accommodating cavity and the second accommodating cavity form a communicator structure and form a storage space for storing liquid required by electrolytic reaction, the first fluid inlet is communicated with the first reaction cavity and the first accommodating cavity and is configured to introduce an electrolytic product of the first polar plate into the first accommodating cavity, and the second fluid inlet is communicated with the second reaction cavity and the second accommodating cavity and is configured to introduce an electrolytic product of the second polar plate into the second accommodating cavity. The present disclosure can meet the safety requirements for the separation of different electrode products.

Description

Electrochemical reaction equipment

technical field

The present disclosure relates to the technical field of electrochemistry, and in particular, to an electrochemical reaction device.

Background technique

Electrochemical technology has an extremely wide range of applications in energy, chemical, water treatment and other industries. Electrochemical testing systems include multiple components, such as electrolytic cells, product separation systems, frames, and electrical control systems.

As the core of the electrochemical test system, the electrolytic cell is composed of multiple components with different functions to achieve uniform distribution of reactants, separation of products and electrode materials, good electrical contact of electrode components, material isolation of cathode and anode chambers, and electrolysis. Requirements such as isolation of the pool from the outside world need to be balanced and optimized for each performance requirement to achieve the best overall performance. The two electrodes of the electrolytic cell can produce products of different properties, such as the oxidation products produced by the anode and the reduction products produced by the cathode. Sealing between them is critical.

The electrolytic cells commonly used in industry are composed of at least two flat electrodes. The structural optimization of the electrolytic cell components can provide strong support for efficient production, testing, and research and development. For the needs of assembly, testing and production, the electrolytic cell needs to be easy to disassemble and assemble, easy to seal, and can easily form a good internal electrical contact to reduce the internal resistance of the electrolytic cell.

In production-oriented electrolysis technology, energy conversion efficiency is the most important technical parameter. The energy conversion efficiency of an electrolytic cell is determined by the impedance of the electrolytic cell, including the internal resistance of the electrolytic cell, catalyst activity and mass transfer impedance. For example, the PEM (proton exchange membrane, proton exchange membrane) electrolytic cell, which uses pure water as a reactant to produce hydrogen and oxygen, is an efficient electrochemical energy storage technology. The anode of the PEM electrolytic cell needs to be uniformly fed with pure water, the cathode and anode chambers often reach a certain working pressure, the electrolytic cell will reach a current density of several A/cm2 or more, and the performance of the electrolytic cell is very sensitive to assembly conditions. In the assembly of PEM electrolytic cells, reasonable structural design can facilitate production and R&D personnel to complete the assembly of low-impedance electrolytic cells and form a good seal to achieve optimal electrolytic cell performance and avoid fluid leakage. For example, alkaline electrolysis cells, which use alkaline solutions as electrolytes and reactants to generate hydrogen and oxygen, are a low-cost electrochemical energy storage technology. For example, in a chlor-alkali electrolytic cell, the anode needs to be fed with an electrolyte containing NaCl, and the cathode needs to be fed with an alkaline electrolyte, chlorine gas is generated at the anode, and hydrogen gas is generated at the cathode. Both gas products are dangerous gases and are a basic electrochemical process production industry. In these reaction cases, the mixture of cathode and anode gas products all have the possibility of explosion, and all generate dangerous gases, such as hydrogen, which are the most prone to leakage. The scale of these processes is relatively large, and the optimization of energy efficiency is crucial in production and R&D.

In the research process of electrolytic cell materials and assembly process, it is necessary to realize the selection of materials and the optimization of process conditions through suitable cell structure. According to the related art known to the inventor, the current electrolytic cell structure has problems of inconvenient assembly, poor performance repeatability, and high error rate, and the assembly of the electrolytic cell is prone to high impedance and fluid leakage, resulting in poor performance of the electrolytic cell or even Unable to operate safely. For example, when two pole plates are connected by a screw connection, due to the lack of a device for fixing the pole plates, it is usually necessary to impose constraints from both sides of the two pole plates, which leads to inconvenient operation of the test personnel and reduces the assembly efficiency of the electrolytic cell; and, Electrolytic cells assembled by personnel with different operating experience in the above manner often have differences in structure, which may lead to poor repeatability of test results.

The two electrodes of the electrolysis cell can respectively produce products of different properties, such as oxidizing gas produced by the anode and reducing gas produced by the cathode, and most of the electrode products with higher purity are required in production. Therefore, the reaction system often needs to be equipped with a gas-liquid management system to achieve product separation and purification. A good gas-liquid management system is essential for the safe and efficient operation of system equipment.

In addition, for the needs of assembly, testing and production, electrochemical reactors require precise control of reactant flow, temperature, pressure, and assembly conditions. For example, in the PEM (proton exchange membrane, proton exchange membrane) water electrolysis reaction, the anode needs to pass pure water. During the electrolysis process, the anode generates oxygen and mixes with the pure water passed in. The cathode generates hydrogen and entrains a small amount of liquid. The two The product of the electrode needs a certain separation to meet the purity requirements of the gas product; in the alkaline electrolysis water reaction system, a certain concentration of alkaline electrolyte needs to be introduced into the anode and cathode, and oxygen is generated at the anode and hydrogen is generated at the cathode, but the gas product They are all mixed with the electrolyte, which requires a gas-liquid separation system to separate purer gas products, and also needs to circulate the electrolyte back to the electrolytic cell; in the electrolysis reaction system of the chlor-alkali process, the anode needs to be fed with an electrolyte containing NaCl, and the cathode needs to be fed with an electrolyte containing NaCl. The electrolyte needs to be introduced, chlorine gas is generated at the anode, and hydrogen is generated at the cathode. The gas products are mixed with the electrolyte. A gas-liquid separation system is required to separate the purer gas products, and the electrolyte is circulated back to the electrolytic cell. In these reaction cases, the mixture of cathode and anode gas products has the possibility of explosion, so special gas-liquid management system is required to meet the safety requirements.

At present, there is a lack of suitable commercial test benches on the market, which are often built by R&D personnel. Unprofessional testing tools, unreasonable institutions and materials will lead to poor repeatability of test data and high error rates. The results were inaccurate, severely limiting technological progress.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide an electrochemical reaction device that can meet the safety requirements for the separation of different electrode products.

A first aspect of the present disclosure provides an electrochemical reaction device, comprising:

frame;

An electrochemical device, mounted on the frame, the electrochemical device includes a first electrode plate and a second electrode plate with opposite polarity to the first electrode plate, the first electrode plate is provided with a first reaction plate a cavity, the second electrode plate is provided with a second reaction cavity, and the first reaction cavity and the second reaction cavity form a reaction space for electrochemical reaction; and

a storage device, mounted on the rack, the storage device includes a storage part, the storage part has a first accommodating cavity, a second accommodating cavity, a first fluid inlet and a second fluid inlet, the first accommodating cavity A communicating device structure is formed with the second accommodating cavity and constitutes a storage space for storing the liquid required for the electrolysis reaction, and the first fluid inlet is communicated with the first reaction cavity and the first accommodating cavity, and is configured to The electrolysis product of the first electrode plate is introduced into the first accommodating cavity, and the second fluid inlet is communicated with the second reaction cavity and the second accommodating cavity, and is configured to The electrolysis product is introduced into the second holding chamber.

According to some embodiments of the present disclosure, the storage part includes a partition wall, the first accommodating cavity and the second accommodating cavity are separated by the partition wall, and the bottom of the partition wall is provided with a communication port to communicate with all the the first accommodating cavity and the second accommodating cavity.

According to some embodiments of the present disclosure, the first accommodating cavity and the second accommodating cavity are arranged side by side along a first direction, and the first accommodating cavity and the second accommodating cavity are arranged along a direction perpendicular to the first direction. Extending in the second direction, the size of the first accommodating cavity in the second direction is larger than the size of the first accommodating cavity in the first direction, and the second accommodating cavity in the second direction The size is larger than the size of the second accommodating cavity in the first direction.

According to some embodiments of the present disclosure,

The storage portion further has a fluid supply port configured to supply the liquid to the reaction space;

The electrochemical reaction apparatus further includes a fluid driving device configured to deliver the liquid stored in the storage space to the reaction space through the fluid supply port.

According to some embodiments of the present disclosure, the liquid is water, the fluid supply port is in communication with the second accommodating cavity, the second fluid inlet is disposed on the top of the second accommodating cavity, and the second fluid The inlet is configured to introduce the electrolysis product of the second electrode plate and the liquid returned from the reaction space to the storage space into the second receiving chamber, and the first fluid inlet is configured to transfer the The electrolysis product of the first electrode plate and the liquid returned from the reaction space to the storage space are introduced into the first accommodating chamber.

According to some embodiments of the present disclosure, the electrochemical reaction device further includes:

a motor, in driving connection with the fluid drive device, configured to provide the fluid drive device with the power required to deliver the liquid; and

A motor control module, in signal connection with the motor, is configured to send control signals to the motor for adjusting the steering and rotational speed of the motor.

According to some embodiments of the present disclosure, the first fluid inlet is provided on the upper portion of the first accommodating cavity, and the second fluid inlet is provided on the top of the second accommodating cavity.

According to some embodiments of the present disclosure, the storage device includes a plurality of the storage parts, the first accommodating cavity and the second accommodating cavity of each of the storage parts are arranged side by side along a first direction, each of the The storage parts are arranged side by side along the first direction.

According to some embodiments of the present disclosure, the storage device includes a storage device body and a top cover. The top cover is disposed on the top of the storage device body, and the top cover is shared by a plurality of the storage parts.

According to some embodiments of the present disclosure, the storage device further includes:

a first exhaust device, connected to the first containment chamber, configured to exhaust gaseous electrolysis products of the first electrode plate stored in the first containment chamber; and

A second exhaust device, connected to the second accommodating chamber, is configured to exhaust gaseous electrolysis products of the second electrode plate stored in the second accommodating chamber.

According to some embodiments of the present disclosure, the first exhaust device includes a first exhaust pipe with one end connected to a top end of the first accommodating cavity and a first cooling device disposed on the first exhaust pipe, the The first cooling device is configured to cool the fluid in the first exhaust pipe, the second exhaust device includes a second exhaust pipe with one end connected to the top end of the second accommodating cavity and a second exhaust pipe disposed on the second exhaust a second cooling device on the pipe, the second cooling device being configured to cool the fluid within the second exhaust pipe.

According to some embodiments of the present disclosure, the storage device further includes a sampling device in communication with at least one of the first containing chamber and the second containing chamber and configured to be discharged into the storage space of the liquid to obtain a test sample of the liquid.

According to some embodiments of the present disclosure, the sampling device includes a sampling tube connected to the bottom end of the first accommodating cavity and a sampling valve disposed on the sampling tube, the sampling valve being configured to control the sampling tube on and off.

According to some embodiments of the present disclosure, the storage device further includes a liquid level control device disposed on the storage portion, and the storage portion further has at least one of the first accommodating cavity and the second accommodating cavity. a third fluid inlet in communication, the liquid level control device is configured to detect the liquid level of the liquid in the storage space, when the liquid level of the liquid in the storage space is lower than a preset liquid level The liquid is replenished into the storage space through the third fluid inlet at times.

According to some embodiments of the present disclosure, the electrochemical reaction device further includes:

a temperature detection device configured to detect the temperature of the liquid in the storage space;

a heating device configured to heat the liquid within the storage space; and

A temperature control module, which is signally connected to the temperature detection device and the heating device, and is configured to send control to the heating device to heat the liquid when the temperature of the liquid in the storage space is lower than a preset temperature signal until the liquid reaches the preset temperature.

According to some embodiments of the present disclosure, the storage part further has a first connection structure and a second connection structure, the first connection structure is configured to install the temperature detection device on the storage part, the first connection structure is Two connection structures are configured to install the heating device on the storage part, the second connection structure is arranged at the bottom of the storage space, and the first connection structure is arranged above the second connection structure .

According to some embodiments of the present disclosure, comprising a plurality of the electrochemical devices arranged on the rack at intervals, the storage device comprises a plurality of the storage parts, and the storage spaces of the plurality of the storage parts are connected to The reaction spaces of the plurality of electrochemical devices are connected in one-to-one correspondence.

According to some embodiments of the present disclosure, the electrochemical reaction device further includes:

a power supply, comprising a plurality of power supply units arranged in a one-to-one correspondence with a plurality of the electrochemical devices, and the power supply units are electrically connected to the first electrode plate and the second electrode plate; and

The internal resistance testing device includes a plurality of internal resistance testing units arranged in a one-to-one correspondence with a plurality of the electrochemical devices, and the internal resistance testing units are configured to detect the internal resistance of the electrochemical devices during an electrochemical reaction.

According to some embodiments of the present disclosure, the electrochemical device further includes:

fixed part; and

A plurality of first connecting pieces are connected with the fixing part, and the plurality of first connecting pieces are configured to fix and install the first pole plate and the second pole plate on the fixing part, so that the The first reaction chamber and the second reaction chamber form the reaction space.

According to some embodiments of the present disclosure, the electrochemical device further includes a mount, the fixing portion is mounted on the mount, the mount is provided with at least one first fluid port in communication with the reaction space, The at least one first fluid port is configured to conduct fluid into or out of the reaction space.

According to some embodiments of the present disclosure, the fixing portion is provided with a first limiting structure, the mounting seat is provided with a second limiting structure, and the fixing portion is connected with the second limiting structure through the first limiting structure. The positioning structure is mounted on the mounting seat to limit the position of the reaction space relative to the at least one first fluid port by limiting the position of the fixing portion relative to the mounting seat.

According to some embodiments of the present disclosure, the first limiting structure and the second limiting structure are concave-convex matching structures.

According to some embodiments of the present disclosure,

The plurality of first connectors are connected to the fixing portion through the first pole plate and the second pole plate in sequence;

The first limiting structure includes a groove penetrating the fixing portion, the second limiting structure includes a boss matched with the groove, and the at least one first fluid port is provided on the boss. The end face, the end face of the second electrode plate close to the side of the mounting seat is provided with at least one second fluid port connected with the at least one first fluid port in a one-to-one correspondence, and the at least one second fluid port is connected with the at least one first fluid port. The reaction spaces are connected.

According to some embodiments of the present disclosure, each of the first fluid ports is in contact with the corresponding second fluid port, and the electrochemical device further includes a device disposed on each of the first fluid ports and the corresponding second fluid port. sealing element between the second fluid ports.

According to some embodiments of the present disclosure,

The first connecting piece includes a threaded connecting piece, and the fixing portion is provided with a plurality of first threaded connecting holes corresponding to the plurality of first connecting pieces;

The first limiting structure includes a groove penetrating the fixing portion, the second limiting structure includes a boss matched with the groove, the groove is a rectangular through groove, and the boss is a rectangular parallelepiped Structure, the plurality of first threaded connection holes are distributed on both sides of the width direction of the groove to avoid the groove.

According to some embodiments of the present disclosure,

The first electrode plate is provided with a plurality of first through holes corresponding to the plurality of first threaded connection holes for penetrating the first connector, and the first reaction cavity forms a square distribution area, The first through holes are arranged around the distribution area of the first reaction chamber and form a square distribution area to avoid the first reaction chamber. The distribution area of the first reaction chamber is connected to the first through-hole. The distribution area of the holes is arranged at an angle;

The second electrode plate is provided with a plurality of second through holes corresponding to the plurality of first threaded connection holes for penetrating the first connecting piece, and the second reaction chamber forms a square distribution area, The second through holes are arranged around the distribution area of the second reaction chamber and form a square distribution area to avoid the second reaction chamber. The distribution area of the second reaction chamber is connected to the second through-hole. The distribution areas of the holes are arranged at an angle.

According to some embodiments of the present disclosure, the electrochemical device further includes an electrolyte membrane installed between the first reaction chamber and the second reaction chamber.

According to some embodiments of the present disclosure,

The electrolyte membrane is a proton exchange membrane;

The storage portion further has a fluid supply port configured to supply water to the reaction space;

The first fluid port includes a first liquid inlet and a first liquid outlet, the first liquid inlet is connected with the second fluid inlet, and the first liquid outlet is connected with the fluid supply port, The second fluid port includes a second liquid inlet and a second liquid outlet in communication with the second reaction chamber, the second liquid inlet in communication with the first liquid outlet and configured to transport water into the second reaction chamber, the second liquid outlet communicates with the first liquid inlet and is configured to conduct water and oxygen out of the second reaction chamber;

The first plate is provided with a third fluid port in communication with the first reaction chamber, and the third fluid port is configured to conduct hydrogen gas out of the first reaction chamber.

According to some embodiments of the present disclosure, the electrochemical device further includes a draft tube, a first end of the draft tube is connected to the third fluid port, and a second end of the draft tube is connected to the first fluid port. A fluid inlet connection.

According to some embodiments of the present disclosure, the electrochemical device further includes a second connecting member configured to fixedly mount the fixing portion on the mounting seat.

In the electrochemical reaction device provided by the present disclosure, the first accommodating cavity and the second accommodating cavity of the storage device form a communication connector structure, and in a state in which a certain volume of liquid is stored in the first accommodating cavity and the second accommodating cavity, the first accommodating cavity Balanced with the liquid level of the liquid in the second accommodating cavity and forming a liquid seal, two mutually disconnected spaces are formed above the liquid level of the first accommodating cavity and above the liquid level of the second accommodating cavity. When the electrolysis products of the first electrode plate and the second electrode plate both contain gas, during the electrolysis reaction process, the gaseous electrolysis products of the first electrode plate and the second electrode plate enter into two mutually disconnected spaces respectively, which can prevent different Mixing of the gaseous electrolysis products of the electrodes, for example in the electrolysis of water, prevents the mixing of hydrogen and oxygen, thereby reducing the risk of explosion. Moreover, the above structure also facilitates the collection or sampling of gaseous electrolysis products of different electrodes.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the attached image:

FIG. 1 is a schematic structural diagram of an electrochemical reaction device according to some embodiments of the disclosure.

FIG. 2 is a schematic structural diagram of a storage device according to some embodiments of the disclosure.

FIG. 3 is a schematic cross-sectional structural diagram of the storage device shown in FIG. 2 .

4 is a schematic control diagram of a temperature control module and a motor control module of an electrochemical reaction device according to some embodiments of the disclosure.

FIG. 5 is a schematic structural diagram of an electrochemical device according to some embodiments of the disclosure.

FIG. 6 is a schematic diagram of an exploded structure of the electrochemical device shown in FIG. 5 .

FIG. 7 is a schematic structural diagram of the first electrode plate of the electrochemical device shown in FIG. 5 .

FIG. 8 is a schematic structural diagram of the second electrode plate of the electrochemical device shown in FIG. 5 .

FIG. 9 is a schematic structural diagram of the fixing part and the mounting seat of the electrochemical device shown in FIG. 1 in an assembled state.

In Figures 1 to 9, the reference numerals respectively represent:

1. Rack; 11. Observation port;

2. Electrochemical device; 21. First plate; 211, First reaction chamber; 212, Third fluid port; 213, First protrusion; 214, First connection hole; 215, First through hole; 22 221, the second reaction chamber; 222, the first flow channel; 223, the second flow channel; 224, the second protrusion; 225, the second connection hole; 226, the second through hole; 23, Fixed part; 231, groove; 232, first threaded connection hole; 233, second threaded connection hole; 24, first connection piece; 25, guide seat; 251, boss; 252, first liquid outlet; 253, the first liquid inlet; 254, the third through hole; 26, the guide pipe; 27, the third connecting piece;

3. Storage device; 31. Storage device body; 311, First accommodating cavity; 312, Second accommodating cavity; 313, Fluid supply port; 314, Second fluid inlet; 315, First fluid outlet; 316, Second fluid outlet; 317, third fluid outlet; 318, first fluid inlet; 319, third fluid inlet; 310, communication port; 32, first exhaust device; 33, second exhaust device; 34, sampling device; 35 36, the second connection structure; 37, the top cover; X, the first direction; Z, the second direction; Y, the third direction; S, the partition wall;

4. Internal resistance test device;

51. Temperature detection device; 52. Heating device;

61. Fluid drive device; 62. Motor;

7. Control device; 71. Temperature control module; 72. Motor control module.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses in any way. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, these techniques, methods, and devices should be considered part of the authorized description. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special Therefore, it cannot be construed as a limitation on the protection scope of the present disclosure.

In the description of the present disclosure, it should be understood that orientations such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" indicate the orientation Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and these orientations do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as a limitation on the protection scope of the present disclosure; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

As shown in FIGS. 1 to 9 , some embodiments of the present disclosure provide an electrochemical reaction apparatus including a rack 1 , an electrochemical device 2 and a storage device 3 . The electrochemical reaction device can be used as a test device or as a production device.

The electrochemical device 2 is mounted on the rack 1 . The electrochemical device 2 includes a first electrode plate 21 and a second electrode plate 22 with opposite polarity to the first electrode plate 21. The first electrode plate 21 is provided with a first reaction chamber 211, and the second electrode plate 22 is provided with a second reaction chamber 211. The cavity 221, the first reaction cavity 211 and the second reaction cavity 221 form a reaction space for electrochemical reaction.

The reaction rate of the electrochemical reaction is usually slow. In order to improve the test efficiency or production efficiency, the electrochemical reaction equipment can include multiple electrochemical devices 2, and the multiple electrochemical devices 2 can simultaneously perform multiple sets of electrochemical tests with the same or different test parameters. respond without interfering with each other.

According to different usage requirements, the electrochemical device 2 can be used as different types of electrochemical reactors. For example, the electrochemical device may be one of the following devices: a proton exchange membrane water electrolysis device, an alkaline water electrolysis device, a chlor-alkali electrolysis cell, a fuel cell, a flow battery.

The storage device 3 is installed on the rack 1 . The storage device 3 includes a storage part, the storage part has a first accommodating cavity 311, a second accommodating cavity 312, a first fluid inlet 318 and a second fluid inlet 314, the first accommodating cavity 311 and the second accommodating cavity 312 form a communication connector structure and are connected to each other. The storage space for storing the liquid required for the electrolysis reaction is formed, and the first fluid inlet 318 communicates with the first reaction chamber 211 and the first accommodating cavity 311, and is configured to introduce the electrolysis product of the first electrode plate 21 into the first accommodating cavity 311, The second fluid inlet 314 communicates with the second reaction chamber 221 and the second accommodating chamber 312 , and is configured to introduce the electrolysis product of the second electrode plate 22 into the second accommodating chamber 312 .

For example, when conducting a PEM water electrolysis test, the first electrode plate can be a cathode plate, the second electrode plate can be an anode plate, the first fluid inlet can be used to introduce the electrolysis product hydrogen of the cathode, and the second fluid inlet can be used to introduce the electrolysis product of the anode. product oxygen.

For another example, when conducting an electrolytic NaCl solution test, the first electrode plate can be a cathode plate, the second electrode plate can be an anode plate, the first fluid inlet can be used to introduce the electrolysis product hydrogen of the cathode, and the second fluid inlet can be used to introduce the anode. Electrolysis product chlorine.

Of course, in the case where the electrolysis product of the electrode and the liquid required for the electrolysis reaction are mixed with each other, the first fluid inlet 318 is not limited to the electrolysis product introduced into the first electrode plate 21, and the second fluid inlet 314 is not limited to the introduction of the second electrode plate 22. The electrolysis product, the first fluid inlet 318 and the second fluid inlet 314 can also be used to direct the liquid required for the electrolysis reaction into the storage space.

In the electrochemical reaction device provided in the embodiment of the present disclosure, the first accommodating cavity and the second accommodating cavity of the storage device form a communication connector structure, and in a state in which a certain volume of liquid is stored in the first accommodating cavity and the second accommodating cavity, the first accommodating cavity and the second accommodating cavity store a certain volume of liquid. The accommodating cavity is balanced with the liquid level of the liquid in the second accommodating cavity and forms a liquid seal, and two mutually disconnected spaces are formed above the liquid level of the first accommodating cavity and the liquid level of the second accommodating cavity. When the electrolysis products of the first electrode plate and the second electrode plate both contain gas, during the electrolysis reaction process, the gaseous electrolysis products of the first electrode plate and the second electrode plate enter into two mutually disconnected spaces respectively, which can prevent different Mixing of the gaseous electrolysis products of the electrodes, for example in the electrolysis of water, prevents the mixing of hydrogen and oxygen, thereby reducing the risk of explosion. Moreover, the above structure also facilitates the collection or sampling of gaseous electrolysis products of different electrodes.

In some embodiments, as shown in FIG. 3 , the storage part includes a partition wall S, the first accommodating cavity 311 and the second accommodating cavity 312 are separated by the partition wall S, and the bottom of the partition wall S is provided with a communication port 310 to communicate with the first accommodating cavity 311 and the second accommodating cavity 312 An accommodating cavity 311 and a second accommodating cavity 312 .

In this embodiment, when the liquid level of the liquid in the storage space is higher than the top edge of the communication port 310 , two mutually different liquid levels can be formed above the liquid level of the first accommodating cavity and the liquid level of the second accommodating cavity. connected space. That is to say, by arranging the communication port 310 at the bottom of the partition wall, with the progress of the electrolysis reaction and the consumption of the liquid, even if there is less liquid remaining in the storage space, the liquid can still be stored in the first accommodating cavity and the second accommodating cavity. A liquid seal is formed, which continuously acts to prevent the mixing of gaseous electrolysis products of different electrodes. Moreover, compared with opening the communication ports on the bottom surfaces of the first accommodating cavity and the second accommodating cavity, in this embodiment, the communication port 310 is opened on the partition wall, which is simpler and more reliable in structure.

As shown in FIG. 3 , the partition wall may be integrally formed with other cavity walls forming the first and second accommodating cavities. In order to facilitate the processing of the communication port 310, the partition wall can also be formed separately from other cavity walls forming the first accommodating cavity and the second accommodating cavity and then connected to the other cavity walls.

In some embodiments, the first accommodating cavity 311 and the second accommodating cavity 312 are arranged side by side along the first direction X, and the first accommodating cavity 311 and the second accommodating cavity 312 extend along the second direction Z perpendicular to the first direction. The size of the first accommodating cavity 311 in the second direction Z is larger than the size of the first accommodating cavity 311 in the first direction X, and the size of the second accommodating cavity 312 in the second direction Z is larger than the size of the second accommodating cavity 312 in the first direction Dimensions on X.

For example, in the embodiments shown in FIGS. 2 and 3 , the first accommodating cavity and the second accommodating cavity are in the form of a rectangular parallelepiped, the first direction X corresponds to the length direction of the first accommodating cavity and the second accommodating cavity, and the second direction Z Corresponding to the height direction of the first accommodating cavity and the second accommodating cavity, the third direction Y corresponds to the width direction of the first accommodating cavity and the second accommodating cavity, in the use state of the storage device, the liquid level of the liquid is perpendicular to the second accommodating cavity. direction Z. In some unillustrated embodiments, the first accommodating cavity and the second accommodating cavity may also have a prismatic or cylindrical structure.

In this embodiment, on the basis that the bottom of the partition wall is provided with the communication port 310, the size of the first accommodating cavity 311 in the second direction Z is larger than the size of the first accommodating cavity 311 in the first direction X, and The size of the second accommodating cavity 312 in the second direction Z is larger than the size of the second accommodating cavity 312 in the first direction X, the bottom area of the first accommodating cavity and the second accommodating cavity are smaller and the height is larger, even if the storage There is less liquid remaining in the space, and the liquid in the storage space can also maintain a certain liquid level to form a liquid seal.

In some embodiments, as shown in FIGS. 2 to 4 , the storage portion further has a fluid supply port 313 configured to supply liquid to the reaction space. The storage device also includes a fluid drive device 61 configured to deliver the liquid stored in the storage space to the reaction space through the fluid supply port 313 .

The fluid drive device 61 may be a pump, such as a peristaltic pump. In the embodiment shown in FIG. 2 and FIG. 3 , when the fluid supply port 313 is provided at the top of the first accommodating cavity 311 , the storage device may further include a delivery pipe extending to the bottom of the storage space for discharging the liquid.

For the electrolysis reaction that takes place in some electrochemical devices provided with an electrolyte membrane, it is only necessary to supply liquid to one of the first reaction chamber and the second reaction chamber and form a liquid circulation, while the liquid may pass through the electrolyte membrane from one electrode during the electrolysis reaction. Penetrates to the other electrode, causing additional loss of fluid. For example, in the PEM water electrolysis test, it is only necessary to supply water as a liquid to the anode of the electrolysis cell to form a water cycle, the anode generates oxygen and protons, and the protons pass through the proton exchange membrane to the cathode and generate hydrogen. A portion of the water will pass through the proton exchange membrane to the cathode, causing additional loss of water. After the electrolysis reaction has been carried out for a period of time, the anode of the electrolysis cell may not be able to continue the electrolysis reaction due to lack of water.

In some embodiments, as shown in FIGS. 2 and 3 , the liquid is water, the fluid supply port 313 communicates with the second accommodating cavity 312 , the second fluid inlet 314 is disposed on the top of the second accommodating cavity 312 , and the second fluid inlet 314 is configured to introduce the electrolysis product of the second electrode plate 22 and the liquid returning from the reaction space to the storage space to the second accommodating cavity 312, and the first fluid inlet 318 is configured to transfer the electrolysis product of the first electrode plate 21 and the liquid from the reaction space. The liquid returning from the space to the storage space is introduced into the first accommodating cavity 311 .

In this embodiment, the storage device supplies water to the anode of the electrolytic cell through the fluid supply port 313 , and the oxygen generated by the anode and the water returned in the liquid circulation are introduced into the second accommodating chamber 312 through the second fluid inlet 314 . The oxygen and water in the medium are separated from gas and liquid, and the hydrogen generated by the cathode and the water permeating from the anode to the cathode are introduced into the first holding chamber 311 through the first fluid inlet 318, and the hydrogen and water are separated in the first holding chamber 311. . Since the first accommodating cavity and the second accommodating cavity form a connector structure, the water permeating from the anode to the cathode can be used for the electrolysis reaction again, reducing the extra loss of the liquid, and the electrolysis reaction in the electrochemical device 2 can last for a long time. No need to refill the storage space.

In some embodiments, as shown in FIG. 4 , the electrochemical reaction apparatus further includes a motor 62 and a motor control module 72 . The motor 62 is drivingly connected to the fluid drive device 61 and is configured to provide the fluid drive device 61 with the power required to deliver the liquid. The motor control module 72 is in signal connection with the motor 62 and is configured to send control signals to the motor 62 that adjust the steering and rotational speed of the motor 62 . The motor control module 72 can adjust the delivery speed of the liquid by adjusting the rotational speed of the motor 62 .

In some embodiments, as shown in FIGS. 2 and 3 , the first fluid inlet 318 is provided on the upper portion of the first accommodating cavity 311 , and the second fluid inlet 314 is provided on the top of the second accommodating cavity 312 .

In order to introduce the gaseous electrolysis product into the storage space more smoothly, the first fluid inlet and the second fluid inlet need to be provided at positions above the liquid level of the liquid. In this embodiment, by arranging the first fluid inlet on the upper part of the first accommodating cavity and the second fluid inlet on the top of the second accommodating cavity, a larger space can be reserved for the first accommodating cavity and the second accommodating cavity The space for accommodating liquid is beneficial to prolong the operation time of the storage part and reduce the frequency of replenishing liquid into the storage space.

For an electrochemical reaction device including a plurality of electrochemical devices 2, in order to respectively introduce the electrolysis products of the plurality of electrochemical devices 2 and supply the liquid required for the electrolysis reaction to the plurality of electrochemical devices 2, the storage device 3 can accordingly Includes multiple storage units.

In some embodiments, the storage device 3 includes a plurality of storage parts, the first accommodating cavity 311 and the second accommodating cavity 312 of each storage part are arranged side by side along the first direction X, and each storage part is arranged side by side along the first direction X.

Correspondingly, the fluid inlets or the fluid outlets with the same function in the plurality of storage parts can be arranged on the same side of the storage parts along the first direction, and connected with the fluid pipeline. For example, in the embodiments shown in FIGS. 2 and 3 , the first accommodating cavities 311 and the second accommodating cavities 312 of the plurality of storage parts may be arranged along the first direction X at intervals. The plurality of first fluid inlets 318 are arranged on the front side of each storage part along the first direction X, and the plurality of second fluid inlets 314 and the plurality of fluid supply ports 313 are arranged on the upper side of each storage part along the first direction X.

In this embodiment, the arrangement of the first accommodating cavity and the second accommodating cavity of each storage part and the arrangement of each storage part enable the multiple storage parts to have a high degree of integration in space, which is helpful for saving test sites , and the fluid pipelines correspondingly connected to the storage spaces of the plurality of storage parts can form a concise and standardized structure layout, which is beneficial to improve the efficiency of the operator to install or disassemble the fluid pipelines.

In some embodiments, the storage device 3 includes a storage device body 31 and a top cover 37 , the first accommodating cavity 311 and the second accommodating cavity 312 of each storage part are provided in the storage device body 31 , and the top cover 37 is provided in the storage device At the top of the main body 31 , a top cover 37 is shared by a plurality of storage parts. After the test, the top cover 37 is removed from the main body 31 of the storage device, and the storage space of each storage part can be cleaned. The material of the storage device body and the top cover can be a material that is not easy to introduce impurities into the liquid in the storage space, such as resin.

In this embodiment, the storage spaces of the multiple storage parts are integrated on the storage device body 31 and the multiple storage parts share the top cover 37 , which is convenient to improve the efficiency of disassembling and cleaning the storage device.

In some embodiments, as shown in FIGS. 2 and 3 , the storage device further includes a first exhaust device 32 and a second exhaust device 33 . The first exhaust device 32 is connected to the first accommodating chamber 311 and is configured to exhaust the gaseous electrolysis products of the first electrode plate 21 stored in the first accommodating chamber 311 . The second exhaust device 33 is connected to the second accommodating chamber 312 and is configured to exhaust the gaseous electrolysis products of the second electrode plate 22 stored in the second accommodating chamber 312 .

According to different gaseous electrolysis products, the first exhaust device 32 and the second exhaust device 33 can be connected with a gas collection device to collect gaseous electrolysis products, or can be directly connected to the external environment to directly collect gaseous electrolysis products The first exhaust device 32 and the second exhaust device 33 can also be connected to the gas treatment device, for example, the implementation shown in FIG. 2 and FIG. 3 For example, in the water electrolysis test, the first exhaust device 32 can be connected to a microreactor catalyzed by Pt or Pd, so as to reduce the safety risk brought by hydrogen.

In some embodiments, the first exhaust device 32 includes a first exhaust pipe with one end connected to the top of the first accommodating cavity 311 and a first cooling device disposed on the first exhaust pipe, the first cooling device is configured In order to cool the fluid in the first exhaust pipe, the second exhaust device 33 includes a second exhaust pipe with one end connected to the top of the second accommodating cavity 312 and a second cooling device disposed on the second exhaust pipe. The cooling device is configured to cool the fluid within the second exhaust pipe. For example, in the embodiments shown in FIGS. 2 and 3 , one end of the first exhaust pipe may be connected to the first fluid outlet 315 on the top surface of the first accommodating cavity 311 , and one end of the second exhaust pipe may be connected to The second fluid outlet 316 on the top surface of the second accommodating cavity 312 .

In this embodiment, the first exhaust pipe is connected to the top of the first accommodating cavity, and the second exhaust pipe is connected to the top of the second accommodating cavity, which facilitates the smooth discharge of gaseous electrolysis products out of the storage device. The fluid to be cooled can be a gaseous electrolysis product or a liquid vapor. The first cooling device can cool the fluid flowing through the first exhaust pipe, the second cooling device can cool the fluid flowing through the second exhaust pipe, and the condensed liquid can pass along the first exhaust pipe and the second exhaust pipe. The second exhaust pipe returns to the storage space. The material of the first exhaust pipe and the second exhaust pipe can be a material that is not easy to introduce impurities into the liquid in the storage space, such as titanium alloy.

In some embodiments, as shown in FIGS. 1 and 2 , the storage device 3 further includes a sampling device 34 that communicates with at least one of the first accommodating cavity 311 and the second accommodating cavity 312 and is configured to discharge the storage liquid in the space to obtain a test sample of the liquid.

Setting the sampling device 34 can not only obtain liquid test samples at any time during the operation of the electrochemical reaction equipment to monitor and analyze the liquid, but also discharge the remaining liquid when the storage space needs to be cleaned.

In some embodiments, in order to further facilitate sampling and drainage, the sampling device 34 includes a sampling tube connected to the bottom end of the first accommodating cavity 311 and a sampling valve disposed on the sampling tube, and the sampling valve is configured to control the flow of the sampling tube. break. For example, in the embodiments shown in FIGS. 2 and 3 , one end of the sampling tube may be connected to the third fluid outlet 317 on the bottom surface of the first accommodating cavity 311 .

In some embodiments, as shown in FIG. 3 , the storage device 3 further includes a liquid level control device disposed on the storage part, and the storage part further has a liquid level control device that communicates with at least one of the first accommodating cavity 311 and the second accommodating cavity 312 . The third fluid inlet 319, the liquid level control device is configured to detect the liquid level of the liquid in the storage space, and replenish the storage space through the third fluid inlet 319 when the liquid level of the liquid in the storage space is lower than the preset liquid level liquid.

The preset liquid level can be determined according to the position of the communication port 310, so that the first accommodating cavity and the second accommodating cavity can always form a liquid seal to prevent the gaseous electrolysis products of different electrodes from mixing, so as to facilitate the storage device and the electrochemical reaction equipment to continue. runs stably.

In order to facilitate the test personnel to observe the change of the liquid level in the storage space during the test, the storage device body 31 can also be made partially or completely transparent, and an observation port 11 is provided at a corresponding position on the rack 1 .

In some embodiments, as shown in FIG. 4 , the electrochemical reaction apparatus further includes a temperature detection device 51 , a heating device 52 and a temperature control module 71 . The temperature detection device 51 is configured to detect the temperature of the liquid in the storage space. The heating device 52 is configured to heat the liquid within the storage space. The temperature control module 71 is signally connected to the temperature detection device 51 and the heating device 52, and is configured to send a control signal to heat the liquid to the heating device 52 when the temperature of the liquid in the storage space is lower than the preset temperature until the liquid reaches the preset temperature.

In this embodiment, the temperature detection device and the heating device can be arranged at the bottom of the first accommodating cavity or the bottom of the second accommodating cavity, so that the temperature detection device and the heating device can still work normally when there is less liquid in the storage space .

When the storage device 3 includes multiple storage parts, the preset temperature of the liquid in each storage part can be set to different values, so as to explore the influence of the temperature of different liquids on the electrolysis reaction.

For the PEM electrolyzed water test, the reaction temperature in the electrolytic cell is generally in the range of 20°C to 100°C. At this time, the temperature detection device 51 can use a Pt100 temperature sensor with higher sensitivity within this temperature range to improve the control accuracy.

In some embodiments, as shown in FIG. 3 , the storage part further has a first connection structure 35 and a second connection structure 36 , the first connection structure 35 is configured to install the temperature detection device 51 on the storage part, and the second connection structure 35 is configured to install the temperature detection device 51 on the storage part. The structure 36 is configured to install the heating device 52 on the storage part, the second connection structure 36 is arranged at the bottom of the storage space, and the first connection structure 35 is arranged above the second connection structure 36 .

In this embodiment, the heating device 52 is installed at the bottom of the storage space and below the temperature detection device 51 . Since the hot and cold liquids will generate convection during the heating process, the above structure is conducive to the heating device 52 to sufficiently and uniformly heat the liquid in the storage space, and the detection result of the temperature detection device 51 is also more conducive to reflect the overall temperature of the liquid in the storage space, thereby increasing the temperature. detection accuracy.

In some embodiments, the temperature control module and the motor driving module described above may be implemented as a general-purpose processor, a programmable logic controller (PLC for short), a digital signal for performing the functions described in the present disclosure Processor (Digital Signal Processor, referred to as: DSP), Application Specific Integrated Circuit (referred to as: ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, referred to as: FPGA) or other programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.

In some embodiments, as shown in FIG. 1 , the electrochemical reaction equipment includes a plurality of electrochemical devices 2 arranged at intervals on the rack 1 , the storage device 3 includes a plurality of storage parts, and the storage spaces of the plurality of storage parts are connected with the plurality of storage parts. The reaction spaces of the electrochemical devices 2 are connected in one-to-one correspondence.

For example, in the embodiment shown in FIG. 1 , the electrochemical reaction device includes four electrochemical devices 2 , and the four electrochemical devices 2 are arranged in a square on the rack 1 . Correspondingly, the storage device 3 includes four storage parts, the first accommodating cavity 311 and the second accommodating cavity 312 of each storage part are arranged side by side along the first direction X, and the four storage parts are arranged side by side along the first direction X. In some not-shown embodiments, the electrochemical reaction device may further include more or less electrochemical devices 2 , for example, including six, eight, twelve electrochemical devices 2 .

As shown in FIG. 4 , when the storage device 3 includes multiple storage parts, in order to control the temperature of the liquid in the multiple storage parts, the electrochemical reaction device may include multiple temperature detection devices 51 , multiple heating devices 52 , and multiple Temperature control module 71 ; in order to realize the control of the conveying speed of the liquid in the plurality of storage parts, the electrochemical reaction device may include a plurality of fluid driving devices 61 , a plurality of motors 62 and a plurality of motor control modules 72 .

The temperature control module 71 and the motor control module 72 can be provided independently of each other; as shown in FIG. 4 , the temperature control module 71 and the motor control module 72 can also be integrated on the same control device 7 . In order to meet the processing and storage requirements of a large number of temperature control modules 71 and a plurality of motor control modules 72, the control device 7 can use a 32-bit ARM processor and a 64MB SRAM (Static Random-Access Memory). memory).

In some embodiments, the electrochemical reaction device further includes a power source and an internal resistance testing device 4 . The power supply includes a plurality of power supply units arranged in a one-to-one correspondence with the plurality of electrochemical devices 2 , and the power supply units are electrically connected to the first electrode plate 21 and the second electrode plate 22 . The internal resistance testing device 4 includes a plurality of internal resistance testing units arranged in a one-to-one correspondence with the plurality of electrochemical devices 2 , and the internal resistance testing units are configured to detect the internal resistance of the electrochemical devices 2 during the electrochemical reaction.

In this embodiment, the power supply can be a multi-channel DC power supply, and each channel of the multi-channel DC power supply is used as a power supply unit, and the internal resistance testing device 4 can use a multi-channel internal resistance tester, and each channel of the multi-channel internal resistance tester can be used as a power supply unit. as an internal resistance test unit. The above arrangement is beneficial to make the electrochemical reaction device compact and easy to use.

In some embodiments, the electrochemical device 2 further includes a fixing part 23 and a plurality of first connecting parts 24 . The plurality of first connectors 24 are connected to the fixing portion 23 . The plurality of first connectors 24 are configured to fix the first electrode plate 21 and the second electrode plate 22 on the fixing portion 23 , so that the first reaction chamber 211 and the second reaction chamber 221 form a reaction space.

In this embodiment, the electrochemical device adopts the connection method in which the fixed part is connected with a plurality of first connectors instead of the connection method in which the plurality of connectors are respectively connected with a plurality of corresponding matching parts one by one, and the plurality of first connectors only need to be connected The first reaction chamber and the second reaction chamber can form a reaction space for electrochemical reaction by being connected with the fixing part. In the process of connecting the first connecting piece with the fixing part, the fixing part can face the first plate in the assembly direction. It is not easy to cause misalignment between the first electrode plate, the second electrode plate and the fixed part, and the operator does not need to impose constraints from both sides of the assembly direction at the same time, which is beneficial to improve the assembly efficiency of the electrochemical device. . In addition, under the constraint of the fixed part, the electrochemical devices assembled by testers with different operating experience are less structurally different, which is conducive to improving the assembly consistency of the electrochemical devices, reducing the influence of irrelevant variables on the test, and improving the Repeatability of test results.

In some embodiments, the electrochemical device 2 further includes a mounting seat, the fixing portion 23 is mounted on the mounting seat, the mounting seat is provided with at least one first fluid port communicating with the reaction space, and the at least one first fluid port is configured to connect Fluids are introduced into or out of the reaction space.

The mount may be a separate component, such as the flow guide 25 shown in FIGS. 5 , 6 and 9 . The guide seat 25 can be connected to the frame 1 through the third connecting piece 27 . The mounting base can also be integrally formed with the frame 1 as part of the frame 1 shown in FIG. 1 .

The fluid introduced into or led out of the reaction space by the first fluid port can be liquid, gas, or a gas-liquid mixture; the fluid introduced into or led out of the reaction space by the first fluid port can be the liquid in the primary battery or the electrolytic cell, or it can be It is the reactant of the electrode reaction that occurs on one of the electrodes, it can also be the product of the electrode reaction that occurs on one of the electrodes, it can also be the mixture of the reactant and the liquid of the electrode reaction that occurs on one of the electrodes, or it can be A mixture of the product of an electrode reaction that occurs at one of the electrodes and a liquid.

That is to say, the function of the first fluid port provided on the mounting seat may be to introduce or export liquid into the reaction space, and may also be to introduce reactants or products of electrochemical reaction into the reaction space. The number of first fluid ports and the flow direction of the fluid in each of the first fluid ports may be set according to electrochemical reactions occurring in the electrochemical device.

In this embodiment, the mounting seat is provided with a first fluid port, and by installing the fixing portion on the mounting seat, a fluid channel that communicates with the reaction space can be formed, especially when the electrochemical reaction equipment includes a plurality of electrochemical devices It can reduce the external fluid pipeline of the electrochemical device, make the fluid pipeline have a more concise arrangement, which is beneficial to improve the disassembly and assembly efficiency of the electrochemical device and the electrochemical reaction equipment, and is also conducive to the connection between the electrochemical device and the fluid pipeline. It has a high degree of integration in space, thus saving the test site.

In some embodiments, the fixing portion 23 is provided with a first limiting structure, the mounting seat is provided with a second limiting structure, and the fixing portion 23 is mounted on the mounting seat through the first limiting structure and the second limiting structure, so as to pass the first limiting structure and the second limiting structure. The position of the fixing portion 23 relative to the mounting seat is restricted, and the position of the reaction space relative to the at least one first fluid port is restricted.

In some embodiments, the first limiting structure and the second limiting structure are concave-convex matching structures. For example, one of the first limiting structure and the second limiting structure may include a groove, and the other may include a boss.

In some embodiments, as shown in FIG. 5 , FIG. 6 and FIG. 9 , a plurality of first connecting members 24 are connected to the fixing portion 23 through the first electrode plate 21 and the second electrode plate 22 in sequence. The first limiting structure includes a groove 231 penetrating the fixing portion 23 , and the second limiting structure includes a boss that cooperates with the groove 231 , such as a boss 251 provided on the guide seat 25 . At least one first fluid port is provided on the end face of the boss, and the end face of the second pole plate 22 on the side close to the mounting seat is provided with at least one second fluid port connected with the at least one first fluid port in a one-to-one correspondence, at least one first fluid port. The second fluid port communicates with the reaction space.

In this embodiment, the groove 231 is used as a through groove penetrating the fixing portion 23 to form a space for avoiding the boss. After the fixing portion is installed on the mounting seat, the first fluid port provided on the end face of the boss and the first fluid port provided on the second The second fluid port on the end face of the side of the diode plate 22 close to the mounting seat can form a connection relationship to form a fluid channel communicating with the reaction space, so that the electrochemical device has higher disassembly and assembly efficiency.

In some embodiments, each first fluid port is in contact with a corresponding second fluid port, and the electrochemical device further includes a sealing element disposed between each first fluid port and the corresponding second fluid port.

In this embodiment, when the fixing portion 23 is installed on the mounting seat through the first limiting structure and the second limiting structure, the first fluid port and the corresponding second fluid port can be tightly fitted through the seal, which is beneficial to Reduce fluid leakage during use, thereby optimizing the performance of electrochemical devices.

In some unillustrated embodiments, the connection between each first fluid port and the corresponding second fluid port may also be in the form of a quick connector or the like.

In some embodiments, as shown in FIG. 5 , FIG. 6 and FIG. 9 , the first connection member 24 includes a threaded connection member, and the fixing portion 23 is provided with a plurality of first threaded connection holes corresponding to the plurality of first connection members 24 232 ; the first limiting structure includes a groove 231 extending through the fixing portion 23 , and the second limiting structure includes a boss that cooperates with the groove 231 , such as a boss 251 provided on the guide seat 25 . The groove 231 is a rectangular through groove, the boss has a rectangular parallelepiped structure, and a plurality of first threaded connection holes 232 are distributed on both sides of the groove 231 in the width direction to avoid the groove 231 .

In this embodiment, when the first connecting member 24 is a threaded connecting member, during the assembly or disassembly process, the first pole plate, the second pole plate and the fixing portion may tend to rotate relative to each other. The rectangular groove 231 that penetrates the fixing portion 23 and the boss 251 having a rectangular parallelepiped structure can restrain the relative rotation of the first pole plate, the second pole plate and the fixing portion by restricting the rotation of the fixing portion relative to the mounting seat. , thereby further improving the disassembly and assembly efficiency of the electrochemical device. The provision of the rectangular groove 231 penetrating the fixing portion 23 and the boss 251 having a rectangular parallelepiped structure also facilitates that the plurality of first threaded connection holes 232 are evenly and reasonably arranged in the remaining space of the fixing portion 23 .

In some embodiments, as shown in FIGS. 7 and 8 , the first electrode plate 21 is provided with a plurality of first through holes 215 corresponding to the plurality of first threaded connection holes 232 for penetrating the first connecting member 24 , the first reaction chamber 211 forms a square distribution area, and the first through holes 215 are arranged around the distribution area of the first reaction chamber 211 and form a square distribution area to avoid the first reaction chamber 211, the first reaction chamber 211 The distribution area and the distribution area of the first through holes 215 are arranged at an included angle; the second pole plate 22 is provided with a plurality of second through holes 232 corresponding to the plurality of first threaded connection holes 232 for passing through the first connecting piece 24 . The hole 226, the second reaction chamber 221 forms a square distribution area, the second through holes 226 are arranged around the distribution area of the second reaction chamber 221 and form a square distribution area to avoid the second reaction chamber 221, the second reaction chamber The distribution area of 221 and the distribution area of the second through holes 226 are arranged at an angle.

In this embodiment, the first reaction chamber 211 and the second reaction chamber 221 may be arranged as tortuous and closely arranged flow channels, so as to improve the test efficiency by increasing the contact area of the reactants. On the premise that the distribution area of the first reaction chamber and the distribution area of the second reaction chamber are constant, the distribution area of the first reaction chamber 211 and the distribution area of the first through hole 215 are arranged at an angle, and the The distribution area of the second reaction chamber 221 and the distribution area of the second through hole 226 are arranged at an angle, which can make the first electrode plate and the second electrode plate have a smaller size, which is more conducive to integrating a plurality of electrochemical devices 2 in on an electrochemical reaction device. The size of the included angle may be 30°˜60°, for example, 45°. Disposing the first through holes 215 around the distribution area of the first reaction chamber 211 and disposing the second through holes 226 around the distribution area of the second reaction chamber 221 is also conducive to rational utilization of the remaining space on the plate.

In some embodiments, the electrochemical device 2 further includes an electrolyte membrane, and the electrolyte membrane is installed between the first reaction chamber 211 and the second reaction chamber 221 .

In some embodiments, the electrolyte membrane is a proton exchange membrane when used as a reactor for a PEM water electrolysis test. The reservoir also has a fluid supply port 313 configured to supply water to the reaction space. The first fluid port includes a first liquid inlet and a first liquid outlet. The first liquid inlet is connected to the second fluid inlet 314, the first liquid outlet is connected to the fluid supply port 313, and the second fluid port is connected to the second fluid inlet 314. The reaction chamber 221 communicates with a second liquid inlet and a second liquid outlet. The second liquid inlet communicates with the first liquid outlet and is configured to introduce water into the second reaction chamber 221. The second liquid outlet is connected to the first liquid outlet. The liquid inlet communicates and is configured to conduct water and oxygen out of the second reaction chamber 221 . The first polar plate 21 is provided with a third fluid port 212 that communicates with the first reaction chamber 211 , and the third fluid port 212 is configured to conduct hydrogen gas out of the first reaction chamber 211 .

In this embodiment, for an electrochemical device with an electrolyte membrane such as a proton exchange membrane, the first electrode plate, the proton exchange membrane, and the second electrode are assembled by using the connection method in which the above-mentioned fixing portion is connected to a plurality of first connectors. The three plates are not prone to dislocation, which is beneficial to further improve the assembly efficiency of the electrochemical device. In addition, under the constraint of the fixed part, the more components in the electrochemical device, the better it is to reduce the structural difference of the electrochemical device assembled by the experimenters with different operating experience and improve the assembly consistency of the electrochemical device. This improves the reproducibility of test results.

In some embodiments, as shown in FIGS. 5 and 6 , the electrochemical device 2 further includes a guide tube 26 , the first end of the guide tube 26 is connected to the third fluid port 212 , and the second end of the guide tube 26 is connected to the third fluid port 212 . Connected to the first fluid inlet 318 .

When assembling the electrochemical device, the other end of the draft tube 26 may be connected to a storage device or product for the product. For example, when the electrochemical device is used as the reactor of the PEM water electrolysis test, the other end of the guide tube 26 can be connected with the hydrogen collection device.

As shown in FIG. 5 to FIG. 9 , when the electrochemical device is used as a reactor for the PEM water electrolysis test, the second electrode plate 22 corresponds to the anode of the electrolytic cell, and the second electrode plate 22 is provided with a second protrusion for connecting with a power source. The outlet 224 and the second connection hole 225, during the electrolysis process, water is the reactant of the anode reaction, oxygen and protons are the products of the anode reaction, and the water in the storage device 3 is used as the electrolyte and the cooling medium. 312 is introduced into the second reaction chamber 221 through the fluid supply port 313, the first liquid outlet 252 on the guide seat 25, the second liquid inlet and the first flow channel 222, and is passed through the second flow channel 223 together with the oxygen generated by the anode. The second liquid outlet, the first liquid inlet 253 and the second fluid inlet 314 on the guide base 25 are led into the second accommodating cavity 312; the first electrode plate 21 corresponds to the cathode of the electrolytic cell, and the second electrode plate 22 is provided with There is a first protrusion 213 and a first connection hole 214 for connecting with a power source. During the electrolysis process, protons enter the first reaction chamber 211 through the proton exchange membrane, and hydrogen is the product of the cathode reaction, and the hydrogen flows from the third fluid port 212 , the guide tube 26 and the first fluid inlet 318 are introduced into the first accommodating cavity 311 . Since a small amount of water leaks to the first reaction chamber 211 through the proton exchange membrane during the electrolysis process, the small amount of water that leaks into the first reaction chamber 211 is also passed through the third fluid port 212 , the guide tube 26 and the first fluid inlet 318 Introduced into the first accommodating cavity 311 .

In order to make the installation relationship between the fixing portion and the mounting seat more firm and reliable, in some embodiments, the electrochemical device 2 further includes a second connecting member, and the second connecting member is configured to fix the fixing portion 23 on the mounting seat. .

The second connector may be a threaded connector. For example, in the embodiments shown in FIG. 6 and FIG. The connecting holes 233 are connected to fix the fixing portion 23 on the guide seat 25 . In some not-shown embodiments, the second connecting member may also be a magnetic connecting member respectively disposed on the fixing portion and the mounting base.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand: Modifications to the disclosed specific embodiments or equivalent replacement of some technical features shall all be included in the scope of the technical solutions claimed in the present disclosure.

Claims (30)

1. an electrochemical reaction device, is characterized in that, comprises: rack(1); An electrochemical device (2) mounted on the frame (1), the electrochemical device (2) comprising a first electrode plate (21) and a second electrode plate (21) having a polarity opposite to the first electrode plate (21) A diode plate (22), the first electrode plate (21) is provided with a first reaction chamber (211), the second electrode plate (22) is provided with a second reaction chamber (221), the first reaction chamber (221) is provided The cavity (211) and the second reaction cavity (221) form a reaction space for electrochemical reaction; and A storage device (3) is installed on the rack (1), the storage device (3) includes a storage part, and the storage part has a first accommodating cavity (311), a second accommodating cavity (312), a first accommodating cavity (312), a A fluid inlet (318) and a second fluid inlet (314), the first accommodating cavity (311) and the second accommodating cavity (312) form a connector structure and constitute a storage space for storing the liquid required for the electrolysis reaction , the first fluid inlet (318) communicates with the first reaction chamber (211) and the first accommodating chamber (311), and is configured to introduce the electrolysis product of the first electrode plate (21) into the The first accommodating cavity (311), the second fluid inlet (314) communicates with the second reaction cavity (221) and the second accommodating cavity (312), and is configured to connect the second polar plate The electrolysis product of (22) is introduced into the second accommodation chamber (312). 2. The electrochemical reaction device according to claim 1, characterized in that, the storage part comprises a partition wall (S), through which the first accommodating cavity (311) and the second accommodating cavity (312) pass. The partition wall (S) is separated, and a communication port (310) is provided at the bottom of the partition wall (S) to communicate with the first accommodating cavity (311) and the second accommodating cavity (312). 3. The electrochemical reaction device according to claim 2, wherein the first accommodating cavity (311) and the second accommodating cavity (312) are arranged side by side along a first direction (X), and the An accommodating cavity (311) and the second accommodating cavity (312) extend along a second direction (Z) perpendicular to the first direction, and the first accommodating cavity (311) is in the second direction (Z) ) is larger than the size of the first accommodating cavity (311) in the first direction (X), and the size of the second accommodating cavity (312) in the second direction (Z) is larger than all The size of the second accommodating cavity (312) in the first direction (X). 4. The electrochemical reaction device according to claim 1, characterized in that, The storage part further has a fluid supply port (313) configured to supply the liquid to the reaction space; The electrochemical reaction apparatus further includes a fluid driving device (61) configured to deliver the liquid stored in the storage space to the reaction through the fluid supply port (313) space. 5. The electrochemical reaction device according to claim 4, wherein the liquid is water, the fluid supply port (313) communicates with the second accommodating cavity (312), and the second fluid inlet (314) is arranged at the top of the second accommodating cavity (312), and the second fluid inlet (314) is configured to introduce the fluid of the second polar plate (22) into the second accommodating cavity (312). The electrolysis product and the liquid returned from the reaction space to the storage space, the first fluid inlet (318) is configured to transfer the electrolysis product of the first plate (21) and the liquid from the reaction space The liquid returning to the storage space is introduced into the first accommodating cavity (311). 6. The electrochemical reaction device of claim 4, further comprising: a motor (62), in driving connection with the fluid drive device (61), configured to provide the fluid drive device (61) with the power required to deliver the liquid; and A motor control module (72), in signal connection with the motor (62), is configured to send control signals to the motor (62) for adjusting the steering and rotational speed of the motor (62). 7. The electrochemical reaction device according to claim 1, characterized in that, the first fluid inlet (318) is disposed on the upper part of the first accommodating cavity (311), and the second fluid inlet (314) It is arranged on the top of the second accommodating cavity (312). 8. The electrochemical reaction apparatus according to claim 1, characterized in that, the storage device (3) comprises a plurality of the storage parts, the first accommodating cavity (311) of each of the storage parts and the The second accommodating chambers (312) are arranged side by side along the first direction (X), and the storage parts are arranged side by side along the first direction (X). 9 . The electrochemical reaction device according to claim 8 , wherein the storage device ( 3 ) comprises a storage device body ( 31 ) and a top cover ( 37 ), and the first storage part of each storage part has the first storage part. 10 . Both the cavity (311) and the second accommodating cavity (312) are arranged in the storage device body (31), the top cover (37) is arranged at the top of the storage device body (31), and a plurality of The storage part shares the top cover (37). 10. The electrochemical reaction device according to any one of claims 1 to 9, wherein the storage device (3) further comprises: A first exhaust device (32), connected to the first accommodating chamber (311), configured to exhaust the gaseous electrolysis of the first electrode plate (21) stored in the first accommodating chamber (311) product; and A second exhaust device (33), connected to the second accommodating chamber (312), is configured to exhaust the gaseous electrolysis of the second electrode plate (22) stored in the second accommodating chamber (312) product. 11. The electrochemical reaction device according to claim 10, characterized in that, the first exhaust device (32) comprises a first exhaust pipe whose one end is connected to the top end of the first accommodating cavity (311), and a first exhaust pipe arranged in the A first cooling device on the first exhaust pipe, the first cooling device is configured to cool the fluid in the first exhaust pipe, and the second exhaust device (33) includes one end connected to the second exhaust pipe A second exhaust pipe at the top of the accommodating cavity (312) and a second cooling device disposed on the second exhaust pipe, the second cooling device being configured to cool the fluid in the second exhaust pipe. 12. The electrochemical reaction device according to any one of claims 1 to 9, characterized in that, the storage device (3) further comprises a sampling device (34), the sampling device (34) and the first A accommodating cavity (311) communicates with at least one of the second accommodating cavities (312), and is configured to discharge the liquid in the storage space to obtain a test sample of the liquid. 13. The electrochemical reaction apparatus according to claim 12, characterized in that, the sampling device (34) comprises a sampling tube connected to the bottom end of the first accommodating cavity (311) and disposed on the sampling tube The sampling valve is configured to control the on-off of the sampling pipe. 14. The electrochemical reaction device according to any one of claims 1 to 9, wherein the storage device (3) further comprises a liquid level control device arranged on the storage part, the storage part There is also a third fluid inlet (319) in communication with at least one of the first containment chamber (311) and the second containment chamber (312), and the liquid level control device is configured to detect the storage space When the liquid level of the liquid in the storage space is lower than a preset liquid level, the liquid is supplemented into the storage space through the third fluid inlet (319). 15. The electrochemical reaction device according to any one of claims 1 to 9, characterized in that, further comprising: a temperature detection device (51) configured to detect the temperature of the liquid in the storage space; a heating device (52) configured to heat the liquid within the storage space; and A temperature control module (71), which is signally connected to the temperature detection device (51) and the heating device (52), and is configured to send a signal to the storage space when the temperature of the liquid in the storage space is lower than a preset temperature The heating device (52) sends a control signal to heat the liquid until the liquid reaches the preset temperature. 16. The electrochemical reaction device according to claim 15, wherein the storage part further has a first connection structure (35) and a second connection structure (36), the first connection structure (35) being It is configured to install the temperature detection device (51) on the storage part, the second connection structure (36) is configured to install the heating device (52) on the storage part, and the first connecting structure (36) is configured to install the heating device (52) on the storage part. Two connection structures (36) are arranged at the bottom of the storage space, and the first connection structure (35) is arranged above the second connection structure (36). 17. The electrochemical reaction device according to claim 1, characterized in that it comprises a plurality of the electrochemical devices (2) arranged at intervals on the rack (1), and the storage device (3) comprises A plurality of the storage parts, and the storage spaces of the storage parts are in one-to-one correspondence with the reaction spaces of the electrochemical devices (2). 18. The electrochemical reaction device of claim 17, further comprising: A power supply, comprising a plurality of power supply units arranged in a one-to-one correspondence with a plurality of the electrochemical devices (2), the power supply units being electrically connected to the first electrode plate (21) and the second electrode plate (22) ;and An internal resistance testing device (4), comprising a plurality of internal resistance testing units arranged in a one-to-one correspondence with a plurality of the electrochemical devices (2), the internal resistance testing units being configured to detect the electrical resistance during the electrochemical reaction process. Internal resistance of chemical device (2). 19. The electrochemical reaction device according to claim 1, wherein the electrochemical device (2) further comprises: a fixed portion (23); and A plurality of first connecting pieces (24) are connected to the fixing portion (23), and the plurality of first connecting pieces (24) are configured to connect the first pole plate (21) and the second pole The plate (22) is fixedly mounted on the fixing part (23), so that the first reaction chamber (211) and the second reaction chamber (221) form the reaction space. 20. The electrochemical reaction device according to claim 19, characterized in that, the electrochemical device (2) further comprises a mounting seat, the fixing portion (23) is mounted on the mounting seat, and the mounting seat At least one first fluid port is provided in communication with the reaction space, the at least one first fluid port being configured to conduct fluid into or out of the reaction space. 21. The electrochemical reaction device according to claim 20, characterized in that, the fixing portion (23) is provided with a first limiting structure, the mounting seat is provided with a second limiting structure, and the fixing portion (23) is provided with a first limiting structure. 23) The first limiting structure and the second limiting structure are mounted on the mounting seat, so as to limit the reaction space by limiting the position of the fixing portion (23) relative to the mounting seat relative to the position of the at least one first fluid port. 22 . The electrochemical reaction device of claim 21 , wherein the first limiting structure and the second limiting structure are concave-convex matching structures. 23 . 23. The electrochemical reaction device of claim 22, wherein The plurality of first connectors (24) are connected to the fixing portion (23) through the first pole plate (21) and the second pole plate (22) in sequence; The first limiting structure includes a groove (231) penetrating the fixing portion (23), the second limiting structure includes a boss matched with the groove (231), and the at least one first limiting structure The fluid port is arranged on the end face of the boss, and the end face of the side of the second pole plate (22) close to the mounting seat is provided with at least one second fluid port connected to the at least one first fluid port in a one-to-one correspondence. A fluid port, the at least one second fluid port communicates with the reaction space. 24. The electrochemical reaction device of claim 23, wherein each of the first fluid ports is in contact with the corresponding second fluid port, the electrochemical device further comprising: a sealing element between the first fluid port and the corresponding second fluid port. 25. The electrochemical reaction device of claim 22, wherein The first connector (24) includes a threaded connector, and the fixing portion (23) is provided with a plurality of first threaded connection holes (232) corresponding to the plurality of first connectors (24); The first limiting structure includes a groove (231) penetrating the fixing portion (23), the second limiting structure includes a boss matched with the groove (231), and the groove (231) ) is a rectangular through groove, the boss has a rectangular parallelepiped structure, and the plurality of first threaded connection holes (232) are distributed on both sides of the groove (231) in the width direction to avoid the groove (231) . 26. The electrochemical reaction device of claim 25, wherein The first pole plate (21) is provided with a plurality of first through holes (215) corresponding to the plurality of first threaded connection holes (232) for penetrating the first connecting piece (24), The first reaction chamber (211) forms a square distribution area, and the first through holes (215) are arranged around the distribution area of the first reaction chamber (211) and form a square distribution area to avoid the the first reaction chamber (211), the distribution area of the first reaction chamber (211) and the distribution area of the first through holes (215) are arranged at an angle; The second pole plate (22) is provided with a plurality of second through holes (226) corresponding to the plurality of first threaded connection holes (232) for penetrating the first connecting piece (24), The second reaction chamber (221) forms a square distribution area, and the second through holes (226) are arranged around the distribution area of the second reaction chamber (221) and form a square distribution area to avoid the The second reaction chamber (221) is disposed at an angle between the distribution area of the second reaction chamber (221) and the distribution area of the second through holes (226). 27. The electrochemical reaction device according to claim 23, wherein the electrochemical device (2) further comprises an electrolyte membrane, and the electrolyte membrane is installed in the first reaction chamber (211) and the second reaction chamber (211) between the two reaction chambers (221). 28. The electrochemical reaction device of claim 27, wherein: The electrolyte membrane is a proton exchange membrane; The storage part further has a fluid supply port (313) configured to supply water to the reaction space; The first fluid port includes a first liquid inlet and a first liquid outlet, the first liquid inlet is connected to the second fluid inlet (314), and the first liquid outlet is connected to the fluid supply The port (313) is connected, the second fluid port includes a second liquid inlet and a second liquid outlet communicated with the second reaction chamber (221), and the second liquid inlet is connected to the first outlet. A liquid port communicates with and is configured to conduct water into the second reaction chamber (221), the second liquid outlet communicates with the first liquid inlet and is configured to conduct water and oxygen out of the second reaction chamber cavity (221); The first polar plate (21) is provided with a third fluid port (212) communicating with the first reaction chamber (211), and the third fluid port (212) is configured to lead hydrogen gas out of the first reaction chamber (211). A reaction chamber (211). 29. The electrochemical reaction device according to claim 28, wherein the electrochemical device (2) further comprises a guide tube (26), the first end of the guide tube (26) being connected to the A third fluid port (212) is connected, and the second end of the guide tube (26) is connected to the first fluid inlet (318). 30. The electrochemical reaction apparatus according to claim 19, characterized in that the electrochemical device (2) further comprises a second connecting member, the second connecting member being configured to connect the fixing portion (23) fixedly mounted on the mounting seat.

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