Slurry electrolysis apparatus and battery production system

Abstract

The application relates to a slurry electrolysis device and a battery production system. The slurry electrolysis device comprises a device body, an electrode rod and a gas supply device. The device body is provided with an electrolytic tank for accommodating slurry to be electrolyzed. At least part of the electrode rod is arranged in the electrolytic tank for electrolyzing the slurry. The gas supply device is in communication with the electrolytic tank. The gas supply device is used for introducing gas into the electrolytic tank, and the gas can ionize conductive ions in the slurry. The slurry is electrolyzed by arranging the electrode rod in the electrolytic tank to convert metal substances in the slurry into oxides and remove them. The electrolysis method can remove metal impurities to a lower content, reducing the risk of self-discharge caused by high metal impurities in the slurry. The gas supply device is arranged to introduce gas into the electrolytic tank. After the gas is introduced into the electrolytic tank, the conductive ions are ionized in the slurry to enhance the conductivity and electrolysis distribution uniformity of the slurry, thereby improving the electrolysis capacity of the slurry and further improving the electrolysis efficiency of the slurry.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to slurry electrolysis equipment and battery production systems. Background Technology

[0002] The slurry is uniformly coated onto the current collector to form an electrode sheet, which directly participates in the electrochemical reaction to store and release energy. The slurry is the foundation of electrode sheet preparation, and its composition and process directly affect the battery's performance, safety, and cost.

[0003] The presence of metallic impurities in the slurry poses a risk of self-discharge during battery operation. Theoretically, electrolysis can convert these impurities into oxides, reducing the risk of self-discharge. However, the high viscosity of the slurry leads to uneven electrolytic distribution during electrolysis, resulting in relatively low electrolysis efficiency. Utility Model Content

[0004] In view of the above problems, it is necessary to provide a slurry electrolysis device and a battery production system that improves the slurry electrolysis efficiency by filling the electrolytic cell with a gas that can ionize conductive ions.

[0005] In a first aspect, this application provides a slurry electrolysis apparatus, comprising:

[0006] The main body of the device is equipped with an electrolytic cell, which is used to hold the slurry to be electrolyzed;

[0007] Electrode rod, at least a portion of which is disposed within an electrolytic cell for electrolyzing slurry;

[0008] The gas supply device is connected to the electrolytic cell; the gas supply device is used to introduce gas into the electrolytic cell, and the gas can ionize conductive ions in the slurry.

[0009] In the technical solution of this application embodiment, an electrolytic cell is set on the main body of the device to accommodate the slurry to be electrolyzed. Electrode rods are set in the electrolytic cell to electrolyze the slurry, so as to convert the metal substances in the slurry into oxides for removal. Electrolysis can remove metal impurities to a low content, greatly reducing the risk of self-discharge caused by high metal impurity content in the slurry. Furthermore, a gas supply device is set to introduce gas into the electrolytic cell. After the gas enters the electrolytic cell, it ionizes into conductive ions in the slurry to enhance the conductivity and electrolytic distribution uniformity of the slurry, thereby improving the electrolytic capacity of the slurry and thus improving the electrolytic efficiency of the slurry.

[0010] In one embodiment, the main body of the device is provided with an air inlet that communicates with the electrolytic cell. The air inlet is located at the bottom of the electrolytic cell, and the air supply device is connected to the air inlet.

[0011] In the technical solution of this application embodiment, by setting the air inlet at the bottom of the electrolytic cell, gas is introduced into the electrolytic cell from the bottom. The gas will naturally rise in the slurry and disperse rapidly and evenly. At the same time, as the gas rises in the slurry, it will disturb the slurry, thereby improving the slurry's fluidity and thus improving the contact efficiency between the slurry and the electrode rod, which is beneficial to improving the electrolysis efficiency of the slurry.

[0012] In one embodiment, the slurry electrolysis apparatus further includes:

[0013] A pressure measuring device is installed on the main body of the device; the pressure measuring device is configured to measure the gas pressure inside the electrolytic cell.

[0014] In the technical solution of this application embodiment, a pressure measuring device is set to detect the gas pressure in the electrolytic cell and adjust the start and stop of the power pump in a timely manner to maintain the gas in the electrolytic cell at the required pressure value, thereby maintaining the concentration of conductive ions in the slurry within the required range.

[0015] In one embodiment, the pressure measuring device is located at the top of the electrolytic cell.

[0016] In the technical solution of this application embodiment, by setting it up in this way, the pressure measuring device can be located above the slurry, above the slurry liquid level, so as to accurately measure the gas pressure in the electrolytic cell.

[0017] In one embodiment, the electrode rod includes:

[0018] The electrode body is inserted through the main body of the device and at least partially inserted into the electrolytic cell;

[0019] A conductive porous membrane is wrapped around the outer surface of the portion of the electrode body that is inserted into the electrolytic cell.

[0020] In the technical solution of this application embodiment, a conductive porous membrane forms an ion exchange membrane. The porous features on its surface increase the contact area with the slurry, which is beneficial to improving the electrolysis efficiency of the slurry.

[0021] In one embodiment, the electrode rod includes a positive electrode rod and a negative electrode rod;

[0022] The conductive porous membrane covering the outer surface of the positive electrode body is a perfluorosulfonic acid ion exchange membrane, while the conductive porous membrane covering the outer surface of the negative electrode body is a metal oxide membrane.

[0023] In the technical solution of this application embodiment, the conductive porous membrane is configured in such a way that it performs its respective ion exchange function in the positive electrode and the negative electrode.

[0024] In one embodiment, at least the portion of the electrode body located below a preset liquid level of the slurry in the electrolytic cell is covered with a conductive porous membrane.

[0025] In the technical solution of this application embodiment, the slurry is kept in contact with the conductive porous membrane by such a configuration.

[0026] In one embodiment, the electrode rod further includes:

[0027] An insulating sleeve is fitted over the portion of the electrode rod that does not have a conductive porous membrane.

[0028] In the technical solution of this application embodiment, the insulation and protection of the electrode rod are improved by setting an insulating sleeve.

[0029] In one embodiment, the main body of the device is provided with a feed port and a discharge port that are connected to the electrolytic cell. The feed port is used to add the slurry into the electrolytic cell, and the discharge port is used to discharge the slurry from the electrolytic cell.

[0030] The feed port is located at the top of the electrolytic cell, and the discharge port is located at the bottom of the electrolytic cell.

[0031] In the technical solution of this application embodiment, the slurry is conveniently added to the electrolytic cell and the slurry in the electrolytic cell is also conveniently drained.

[0032] In one embodiment, the device body includes:

[0033] The tank body has an electrolytic cell on it and an opening that connects to the electrolytic cell.

[0034] The cover, with a sealing cap located at the opening.

[0035] In the technical solution of this application embodiment, by setting the main body of the device as a separate tank and cover, the inside of the electrolytic cell can be maintained and cleaned by opening the cover. After the cover and the tank are sealed together, the electrolytic cell forms a sealed space, which can achieve a higher gas pressure and improve the electrolysis efficiency of the slurry even under high pressure conditions.

[0036] In one embodiment, an electrode rod is disposed on the cover; and / or an air supply device is connected to the tank.

[0037] In the technical solution of this application embodiment, when assembling the slurry electrolysis device, the electrode rod can be connected to the cover first, and then the cover can be placed on the tank. The electrode rod is assembled into the electrolysis tank synchronously with the cover, which makes the installation relatively quick.

[0038] Secondly, this application provides a battery production system, including the slurry electrolysis device in the above embodiments.

[0039] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0040] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0041] Figure 1 This is a schematic diagram of the slurry electrolysis device provided in one embodiment of this application;

[0042] Figure 2 This is a schematic diagram of the structure of an electrode rod provided in one embodiment of this application.

[0043] The reference numerals in the detailed embodiments are as follows:

[0044] 1. Main body of the device; 10. Electrolytic cell; 11. Cell body; 111. Air inlet; 112. Discharge outlet; 12. Cover; 121. Feeding port;

[0045] 2. Electrode rod; 201. Positive electrode rod; 202. Negative electrode rod; 21. Electrode body; 22. Conductive porous membrane;

[0046] 3. Gas supply device; 31. Gas storage tank; 32. Gas pipeline; 33. Power pump;

[0047] 4. Pressure measuring device; 41. Instrument body; 42. Probe;

[0048] 5. Base;

[0049] 6. Power supply. Detailed Implementation

[0050] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0052] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0053] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0055] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0056] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0057] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0058] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0059] Electrode sheets are crucial components of batteries, manufactured by coating a slurry onto a current collector. The slurry uniformly disperses the active electrode materials, ensuring that electrochemical reactions occur evenly on the electrode surface. The slurry is fundamental to electrode sheet fabrication, and its composition and processing directly impact battery performance, safety, and cost.

[0060] The inventors of this application noted that metallic impurities exist in the slurry, posing a risk of self-discharge during battery operation. Theoretically, electrolysis can convert these metallic impurities into oxide forms, reducing the risk of self-discharge. However, the high viscosity of the slurry leads to uneven electrolytic distribution during electrolysis, resulting in low electrolysis efficiency. Traditional techniques typically use magnetic adsorption to remove metallic impurities from the slurry, but this method is not thorough, leaving a relatively high level of metallic impurities in the slurry.

[0061] Based on the above considerations, the inventors, after in-depth research, designed a slurry electrolysis device, including a main body and electrode rods. The main body is equipped with an electrolytic cell, within which the slurry is contained. The electrode rods convert metallic substances in the slurry into oxides for removal. Electrolysis can remove metal impurities to a low concentration, significantly reducing the risk of self-discharge caused by high levels of metal impurities in the slurry. Furthermore, by incorporating a gas supply device, gas is introduced into the electrolytic cell. Upon entering the cell, the gas ionizes into conductive ions in the slurry, enhancing the conductivity and uniformity of electrolytic distribution, thereby improving the slurry's electrolytic capacity and ultimately increasing its electrolysis efficiency.

[0062] The slurry electrolysis apparatus provided in the embodiments of this application will now be described with reference to the accompanying drawings. Figure 1 A schematic diagram of the slurry electrolysis apparatus provided in one embodiment of this application is shown; Figure 2 A schematic diagram of the structure of the electrode rod 2 provided in one embodiment of this application is shown.

[0063] This application provides a slurry electrolysis apparatus, including a main body 1, electrode rods 2, and a gas supply device 3. The main body 1 is provided with an electrolytic cell 10, which is used to contain the slurry to be electrolyzed. At least a portion of the electrode rods 2 is disposed within the electrolytic cell 10 for electrolyzing the slurry. The gas supply device 3 is connected to the electrolytic cell 10; the gas supply device 3 is used to introduce gas into the electrolytic cell 10, and the gas can ionize conductive ions in the slurry.

[0064] The slurry electrolysis apparatus provided in this application embodiment contains an electrolytic cell 10 on the main body 1 to hold the slurry to be electrolyzed. Electrode rods 2 are installed in the electrolytic cell 10 to electrolyze the slurry, converting the metal substances in the slurry into oxides for removal. This electrolysis method can remove metal impurities to a low content, greatly reducing the risk of self-discharge caused by high levels of metal impurities in the slurry. Furthermore, a gas supply device 3 is installed to introduce gas into the electrolytic cell 10. After the gas enters the electrolytic cell 10, it ionizes into conductive ions in the slurry, thereby enhancing the conductivity and uniformity of electrolytic distribution of the slurry, thus improving the electrolysis capacity and efficiency of the slurry.

[0065] Specifically, the gas supplied by the gas supply device 3 into the electrolytic cell 10 is a mixture of inert gas and ionizable gas. The inert gas is the main gas to reduce the ionization energy, while the ionizable gas acts as an additive, ionizing into conductive ions in the slurry. The ionizable gas must also have high solubility and not participate in the reaction to minimize its impact on the slurry's performance.

[0066] Optionally, the inert gas can be argon, helium, or nitrogen. The ionizable gas can be hydrogen chloride, which ionizes into hydrogen and chloride ions in the slurry. Of course, the inert and ionizable gases that can be used are not limited to these; other inert gases or other ionizable gases, such as those that ionize into fluoride ions, may be used in some other embodiments.

[0067] In some embodiments, the electrode rod 2 includes a positive electrode rod 201 and a negative electrode rod 202. The slurry electrolysis device also includes a power supply. The positive electrode rod 201 is connected to the positive terminal of the power supply, and the negative electrode rod 202 is connected to the negative terminal of the power supply, so as to supply power to the positive electrode rod 201 and the negative electrode rod 202 through the power supply.

[0068] In some embodiments, the main body 1 of the device is provided with an air inlet 111 communicating with the electrolytic cell 10. The air inlet 111 is located at the bottom end of the electrolytic cell 10, and the gas supply device 3 is connected to the air inlet 111. By setting the air inlet 111 at the bottom end of the electrolytic cell 10, gas is introduced into the electrolytic cell 10 from the bottom end. The gas will naturally rise in the slurry and disperse rapidly and evenly in the slurry. At the same time, when the gas rises in the slurry, it will disturb the slurry, thereby improving the fluidity of the slurry and thus improving the contact efficiency between the slurry and the electrode rod 2, which is beneficial to improving the electrolysis efficiency of the slurry.

[0069] Optionally, the air inlet 111 is located close to the bottom of the electrolytic cell 10 and is set on the side wall of the electrolytic cell 10. On the one hand, the air supply device 3 is connected to the air inlet 111, and on the other hand, the gas will be introduced into the bottom of the electrolytic cell 10 and flow upward from the bottom of the cell, so that the slurry at the bottom of the electrolytic cell 10 will be disturbed.

[0070] In some embodiments, the gas supply device 3 includes a gas storage tank 31, a gas delivery pipe 32, and a power pump 33. The gas storage tank 31 is used to store the gas to be input into the electrolytic cell 10 and can be configured as a high-pressure resistant gas storage tank. One end of the gas delivery pipe 32 is connected to the inlet 111, and the other end is connected to the gas storage tank 31 to deliver the gas in the gas storage tank 31 to the electrolytic cell 10 through the gas delivery pipe 32. The power pump 33 is installed on the gas delivery pipe 32 to provide power for the gas delivery. The power pump 33 is started to deliver gas into the electrolytic cell 10. When the pressure inside the electrolytic cell 10 reaches a certain pressure value, the power pump 33 is turned off to stop the delivery of gas into the electrolytic cell 10.

[0071] Optionally, a first switching valve is provided on the gas supply pipe 32 to regulate the opening and closing of the gas supply pipe 32.

[0072] In some embodiments, the slurry electrolysis apparatus further includes a pressure measuring device 4, which is disposed on the main body 1 of the apparatus and configured to measure the gas pressure inside the electrolytic cell 10. By setting the pressure measuring device 4 to detect the gas pressure inside the electrolytic cell 10, the start and stop of the power pump 33 can be adjusted in a timely manner to maintain the gas inside the electrolytic cell 10 at the required pressure value, thereby maintaining the concentration of conductive ions in the slurry within the required range.

[0073] Optionally, the pressure measuring device 4 is located at the top of the electrolytic cell 10. In this way, the pressure measuring device 4 is positioned above the slurry, above the slurry level, to accurately measure the gas pressure inside the electrolytic cell 10.

[0074] Specifically, the pressure measuring device 4 includes an instrument body 41 and a probe 42. The instrument body 41 is mounted on the device body 1, and the probe 42 is inserted into the electrolytic cell 10 to accurately measure the pressure inside the electrolytic cell 10.

[0075] In some embodiments, the main body 1 of the apparatus is provided with a feed port 121 and a discharge port 112 communicating with the electrolytic cell 10. The feed port 121 is used to add slurry into the electrolytic cell 10, and the discharge port 112 is used to discharge slurry from the electrolytic cell 10. The feed port 121 is located at the top of the electrolytic cell 10, and the discharge port 112 is located at the bottom of the electrolytic cell 10. This arrangement facilitates both adding and draining the slurry from the electrolytic cell 10.

[0076] Optionally, a second switching valve is provided at the discharge port 112, and the opening and closing of the discharge port 112 is adjusted by the second switching valve. When it is necessary to discharge the slurry in the electrolytic cell 10, the second switching valve is opened. In other cases, such as when slurry is added to the electrolytic cell 10 through the feed port 121 or when slurry electrolysis is in progress, the second switching valve is kept closed.

[0077] It is understood that the positions of the feed port 121 and the discharge port 112 are not limited to this. In other embodiments, the feed port 121 may be located at the bottom of the electrolytic cell 10, and the discharge port 112 may be located at the top of the electrolytic cell 10. Alternatively, both the feed port 121 and the discharge port 112 may be located at the top of the electrolytic cell 10, or both may be located at the bottom of the electrolytic cell 10. This allows for the input and output of slurry into the electrolytic cell 10, and there are no restrictions on the positions of the feed port 121 and the discharge port 112.

[0078] In this embodiment, the discharge port 112 and the air inlet 111 are respectively located on opposite sides of the bottom of the device body 1, at a considerable distance apart, so as to facilitate the arrangement of the air supply device 3 and the slurry collection device around the device body 1, which helps to reduce the problem of insufficient placement space.

[0079] In some embodiments, the main body 1 of the device includes a tank 11 and a cover 12. An electrolytic cell 10 is mounted on the tank 11, and an opening communicating with the electrolytic cell 10 is provided. The cover 12 seals over the opening. By configuring the main body 1 as a separate tank 11 and cover 12, maintenance and cleaning operations can be performed on the interior of the electrolytic cell 10 by opening the cover 12. After the cover 12 is sealed to the tank 11, the electrolytic cell 10 forms a sealed space, enabling the achievement of higher gas pressure and improving the electrolysis efficiency of the slurry even under high pressure conditions.

[0080] To improve the sealing between the cover 12 and the groove 11, a sealing ring is sandwiched between the cover 12 and the groove 11. The sealing ring can be made of polytetrafluoroethylene, or other materials, as long as a good sealing effect can be achieved.

[0081] Alternatively, the tank 11 and the cover 12 may be made of metal and be able to withstand pressures up to 15 MPa.

[0082] Optionally, the inner surfaces of the tank body 11 and the cover 12 facing the electrolytic cell 10 are insulated to reduce the impact on the electrolytic reaction. Specifically, the inner surfaces of the tank body 11 and the cover 12 are provided with a polytetrafluoroethylene layer.

[0083] In some embodiments, the slurry electrolysis device further includes a base 5, on which a tank 11 is disposed to facilitate the installation of the device body 1. Specifically, the tank 11 is fixed to the base 5 by fasteners such as bolts or screws to securely install the device body 1, thereby improving the stability of the slurry electrolysis device during operation.

[0084] In some embodiments, the cover 12 is disposed on the top of the tank 11, the electrode rod 2 is disposed on the cover 12, and / or the gas supply device 3 is connected to the tank 11. When assembling the slurry electrolysis device, the electrode rod 2 can be connected to the cover 12 first, and then the cover 12 can be placed on the tank 11. The electrode rod 2 is assembled into the electrolysis cell 10 simultaneously with the cover 12, which makes the installation relatively quick.

[0085] Optionally, the electrode rod 2 is vertically arranged on the cover 12 and extends vertically inside the electrolytic cell 10. The gas input into the electrolytic cell 10 flows vertically upward, which can maintain a large contact range with the electrode rod 2.

[0086] In some embodiments, the electrode rod 2 is sealed to the cover 12. The cover 12 has a mounting hole, the electrode rod 2 is disposed within the mounting hole, and sealant is applied between the electrode rod 2 and the wall of the mounting hole for fixation and sealing. Optionally, a threaded sleeve can be threaded into the mounting hole to connect the electrode rod 2 to the threaded sleeve, thereby improving the installation stability of the electrode rod 2.

[0087] In some embodiments, the electrode rod 2 includes an electrode body 21 and a conductive porous membrane 22. The electrode body 21 is inserted through the device body 1 and at least partially inserted into the electrolytic cell 10. The conductive porous membrane 22 covers the outer surface of the portion of the electrode body 21 inserted into the electrolytic cell 10. The conductive porous membrane 22 forms an ion exchange membrane, and its porous surface increases the contact area with the slurry, which is beneficial to improving the electrolysis efficiency of the slurry.

[0088] In some embodiments, the electrode rod 2 includes a positive electrode rod 201 and a negative electrode rod 202; the conductive porous membrane 22 covering the outer surface of the electrode body 21 of the positive electrode rod 201 is constructed as a perfluorosulfonic acid ion exchange membrane, and the conductive porous membrane 22 covering the outer surface of the electrode body 21 of the negative electrode rod 202 is constructed as a metal oxide membrane. This arrangement allows the conductive porous membrane 22 to perform its respective ion exchange function in both the positive electrode rod 201 and the negative electrode rod 202.

[0089] Optionally, the aforementioned metal oxide film can be made of aluminum oxide, or other metal oxide materials.

[0090] Specifically, the electrode body 21 in the positive electrode 201 can be made of tungsten or platinum-iridium alloy, while the electrode body 21 in the negative electrode 202 can be made of graphite. Optionally, the electrode body 21 of the negative electrode 202 can be cylindrical, which is beneficial to improving its discharge uniformity.

[0091] In some embodiments, at least the portion of the electrode body 21 located below a preset liquid level of the slurry in the electrolytic cell 10 is covered with a conductive porous membrane 22 so that the slurry and the conductive porous membrane 22 remain in contact.

[0092] Optionally, the upper end of the conductive porous membrane 22 is higher than the preset liquid level of the slurry, so that the slurry can always be in contact with the conductive porous membrane 22 of the electrode rod 2, and will not be higher than the conductive porous membrane 22.

[0093] In some embodiments, the electrode rod 2 further includes an insulating sleeve, which is fitted over the portion of the electrode rod 2 not covered by the conductive porous membrane 22. By providing the insulating sleeve, the insulation and protection of the electrode rod 2 are improved.

[0094] Optionally, the insulating sleeve may be made of high-temperature silicone or other insulating and pressure-resistant materials.

[0095] The slurry electrolysis apparatus provided in this embodiment first introduces slurry into the electrolysis cell 10 through the feed port 121 to a preset liquid level. Then, gas is introduced into the electrolysis cell 10 through the gas supply device 3 to bring the gas pressure inside the electrolysis cell 10 to a preset pressure. After that, the power supply 6 is turned on to start electrolysis. After electrolysis is completed, the power supply 6 is turned off, the discharge port 112 is opened, and the electrolyzed slurry in the electrolysis cell 10 is discharged and collected.

[0096] During electrolysis, the pressure inside the electrolytic cell 10 can be set to 0.1~5MPa, but is generally set to 1.5~2.0MPa. The electrolysis time generally lasts 1~1.5 hours.

[0097] It should be noted that the preset pressure and electrolysis time during electrolysis need to be set specifically according to the viscosity of the slurry, and these parameters can be accurately measured through experiments.

[0098] This application also provides a battery production system, including the slurry electrolysis device provided in any of the above embodiments.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A slurry electrolysis device, characterized in that, include: The main body of the device (1) is provided with an electrolytic cell (10), which is used to contain the slurry to be electrolyzed; Electrode rod (2), at least a portion of which is disposed in the electrolytic cell (10) for electrolyzing the slurry; A gas supply device (3) is connected to the electrolytic cell (10); the gas supply device (3) is used to introduce gas into the electrolytic cell (10), and the gas can ionize conductive ions in the slurry.

2. The slurry electrolysis apparatus according to claim 1, characterized in that, The main body (1) of the device is provided with an air inlet (111) that communicates with the electrolytic cell (10). The air inlet (111) is located at the bottom end of the electrolytic cell (10), and the gas supply device (3) is connected to the air inlet (111).

3. The slurry electrolysis apparatus according to claim 1, characterized in that, The slurry electrolysis device further includes: A pressure measuring device (4) is disposed on the main body (1) of the device; the pressure measuring device (4) is configured to measure the gas pressure inside the electrolytic cell (10).

4. The slurry electrolysis apparatus according to claim 3, characterized in that, The pressure measuring device (4) is located at the top of the electrolytic cell (10).

5. The slurry electrolysis apparatus according to claim 1, characterized in that, The electrode rod (2) includes: The electrode body (21) is inserted through the main body of the device (1) and at least partially inserted into the electrolytic cell (10); A conductive porous membrane (22) is wrapped around the outer surface of the portion of the electrode body (21) inserted into the electrolytic cell (10).

6. The slurry electrolysis apparatus according to claim 5, characterized in that, The electrode rod (2) includes a positive electrode rod (201) and a negative electrode rod (202). The conductive porous membrane (22) covering the outer surface of the electrode body (21) of the positive electrode (201) is a perfluorosulfonic acid ion exchange membrane, and the conductive porous membrane (22) covering the outer surface of the electrode body (21) of the negative electrode (202) is a metal oxide membrane.

7. The slurry electrolysis apparatus according to claim 5, characterized in that, The conductive porous membrane (22) is wrapped around at least the portion of the electrode body (21) located below the preset liquid level of the slurry in the electrolytic cell (10).

8. The slurry electrolysis apparatus according to claim 5, characterized in that, The electrode rod (2) also includes: An insulating sleeve is fitted onto the portion of the electrode rod (2) where the conductive porous membrane (22) is not located.

9. The slurry electrolysis apparatus according to any one of claims 1 to 8, characterized in that, The main body (1) of the device is provided with a feed port (121) and a discharge port (112) that are connected to the electrolytic cell (10). The feed port (121) is used to add the slurry into the electrolytic cell (10), and the discharge port (112) is used to discharge the slurry from the electrolytic cell (10). The feed port (121) is located at the top of the electrolytic cell (10), and the discharge port (112) is located at the bottom of the electrolytic cell (10).

10. The slurry electrolysis apparatus according to any one of claims 1 to 8, characterized in that, The main body of the device (1) includes: The tank (11) is provided with the electrolytic cell (10) and has an opening that communicates with the electrolytic cell (10); Cover (12), a sealing cover is provided at the opening.

11. The slurry electrolysis apparatus according to claim 10, characterized in that, The electrode rod (2) is disposed on the cover (12); and / or the gas supply device (3) is connected to the tank (11).

12. A battery production system, characterized in that, Includes the slurry electrolysis apparatus as described in any one of claims 1 to 11.

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