Pulping equipment and battery production system

Abstract

The invention provides pulping equipment and a battery production system. The pulping equipment comprises a pulping barrel and two stirring devices. The pulping barrel is provided with a containing cavity used for containing pulp. The two stirring devices are arranged in the accommodating cavity and are used for uniformly stirring the slurry. And the two stirring devices are symmetrically arranged in the accommodating cavity. The stirring device comprises a dispersing disc and a scraper. The dispersing disc rotates in the containing cavity and is used for providing the rotating speed for the slurry. The scraper is arranged close to the dispersing disc and used for providing shearing force for slurry. The dispersing disc comprises a plurality of stirring wheels arranged in the first direction, and needle-shaped structures are arranged on the stirring wheels. Wherein the first direction is the height direction of the pulping barrel. The two stirring devices are symmetrically arranged in the accommodating cavity, so that the slurry in the accommodating cavity is uniformly stirred, the stirring effect of the pulping equipment is further improved, the stirring time is shortened, and the production efficiency is improved while the quality of the slurry is ensured by the pulping equipment.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a pulping device and a production system of a battery. Background Art

[0002] A production system of a battery needs to include a pulping device for obtaining the slurry required for manufacturing battery electrodes.

[0003] Among at least two types of pulping devices in the related art, it takes at least 5 hours for one device to stir the powder into slurry; the shear force formed during the stirring process of the other device is insufficient, so that the slurry in the device cannot be fully stirred, resulting in many particles in the stirred slurry and the slurry viscosity not meeting the standard. Summary of the Invention

[0004] This application provides a pulping device and a production system of a battery, enabling the pulping device to apply a high shear force to the slurry during the stirring process, shortening the stirring duration, and improving the production efficiency while ensuring the quality of the slurry.

[0005] In a first aspect, this application provides a pulping device, which may include: a pulping barrel and two stirring devices. The pulping barrel has a receiving cavity for receiving the slurry. The two stirring devices are arranged in the receiving cavity for stirring the slurry evenly. Moreover, the two stirring devices are symmetrically arranged in the receiving cavity. The stirring device includes a dispersion disk and a scraper. The dispersion disk rotates in the receiving cavity for providing a rotational speed to the slurry. The scraper is arranged close to the dispersion disk for providing a shear force to the slurry. The dispersion disk includes a plurality of stirring wheels arranged along a first direction, and needle-like structures are arranged on the stirring wheels. Wherein, the first direction is the height direction of the pulping barrel.

[0006] The pulping device provided by the first aspect may include: a pulping barrel and two stirring devices. The pulping barrel is used for receiving the slurry to prevent the slurry from leaking. The dispersion disk in the stirring device includes a plurality of stirring wheels arranged along a first direction. The plurality of stirring wheels simultaneously provide a rotational speed to the slurry, enabling the slurry in the receiving cavity to be stirred evenly in the first direction, thereby improving the stirring effect of the pulping device. The needle-like structures on the stirring wheels are used to reduce the contact area between the stirring wheels and the slurry, thereby increasing the shear force generated by the stirring device on the slurry, and further improving the stirring effect of the pulping device. Further, the two stirring devices are symmetrically arranged in the receiving cavity, enabling the slurry in the receiving cavity to be stirred evenly, further improving the stirring effect of the pulping device and shortening the stirring duration, so that the pulping device improves the production efficiency while ensuring the quality of the slurry.

[0007] In a possible design, the stirring wheel has a cross-shaped structure. The cross-shaped structure includes four convex portions and four concave portions. Two adjacent convex portions are connected by a concave portion, and there is a first included angle between two adjacent convex portions. The needle-like structure is provided on the convex portion.

[0008] Based on the description of the above embodiments, the cross-shaped structure of the stirring wheel can enable more slurry to participate in the stirring of the dispersion disk, and increase the shearing force of the dispersion disk on the slurry, thereby ensuring the quality of the slurry and improving the production efficiency.

[0009] In a possible design, the first included angle is greater than or equal to 90° and less than or equal to 100°.

[0010] Based on the description of the above embodiments, when the first included angle is greater than or equal to 90° and less than or equal to 100°, when the stirring wheel rotates, there is enough space to accommodate more slurry to participate in the stirring, and the shearing force generated by the convex portion on the slurry can be ensured to be as large as possible.

[0011] In a possible design, the top end of the convex portion is arc-shaped. The top end is the end of the convex portion close to the rotation center of the dispersion disk.

[0012] Based on the description of the above embodiments, the arc-shaped top end of the convex portion can prevent the convex portion from being easily damaged, thereby ensuring the stirring effect of the pulping equipment, that is, ensuring the quality of the slurry.

[0013] In a possible design, the length of the needle-like structure extending in the first direction is greater than or equal to 8 mm.

[0014] Based on the description of the above embodiments, the length of the needle-like structure extending in the first direction being greater than or equal to 8 mm can increase the area of the stirring device shearing the slurry, make the slurry stirring more sufficient, thereby ensuring the quality of the slurry.

[0015] In a possible design, the stirring wheel includes a first stirring wheel, a second stirring wheel, and a third stirring wheel. The first stirring wheel is close to the bottom of the pulping barrel. The third stirring wheel is far from the bottom of the pulping barrel. The second stirring wheel is arranged between the first stirring wheel and the third stirring wheel. The diameter of the first stirring wheel is greater than the diameter of the second stirring wheel. The diameter of the second stirring wheel is greater than the diameter of the third stirring wheel.

[0016] Based on the description of the above embodiments, the diameter of the first stirring wheel being greater than the diameter of the second stirring wheel, and the diameter of the second stirring wheel being greater than the diameter of the third stirring wheel can enable more slurry to participate in the stirring, thereby improving the stirring efficiency and shortening the stirring time of the pulping equipment.

[0017] In a possible design, the scraper includes a first part and a second part. The first part extends along the bottom surface of the pulping barrel. The second part extends along the side surface of the pulping barrel.

[0018] Based on the description of the above embodiments, the scraper includes a first part extending along the bottom surface of the pulping barrel and a second part extending along the side surface of the pulping barrel, ensuring that the pulp in the pulping barrel can be sheared by the scraper, thereby making the pulp stirred by the pulping equipment more uniform and ensuring the quality of the pulp.

[0019] In a possible design, there is a first distance between the first part and the bottom surface of the pulping barrel. The first distance is less than or equal to 6 mm.

[0020] Based on the description of the above embodiments, the first distance being less than or equal to 6 mm can prevent the pulp from adhering to the bottom surface of the pulping barrel and not participating in the stirring, thereby ensuring the pulping effect of the pulping equipment.

[0021] In a possible design, there is a second distance between the second part and the side surface of the pulping barrel. The second distance is less than or equal to 6 mm.

[0022] Based on the description of the above embodiments, the second distance being less than or equal to 6 mm can prevent the pulp from adhering to the side surface of the pulping barrel and not participating in the stirring, thereby ensuring the pulping effect of the pulping equipment.

[0023] In a second aspect, the present application provides a battery production system, including the pulping equipment described in any one of the above embodiments, and the pulping equipment can be used to stir the electrode material in the battery.

[0024] For the battery production system provided in the above second aspect, the beneficial effects can refer to the beneficial effects brought by the above first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of a pulping equipment in the related art.

[0027] Figure 2 For Figure 1 the top view.

[0028] Figure 3 It is a schematic structural diagram of the pulping equipment in the embodiments of the present application.

[0029] Figure 4 is the top view of Figure 3 .

[0030] Figure 5 is the enlarged view of part A in Figure 4 .

[0031] Figure 6 is the enlarged view of part B in Figure 4 .

[0032] Explanation of reference numerals in the drawings:

[0033] 100 - Pulping equipment;

[0034] 1 - Pulping barrel; 11 - Bottom surface; 12 - Side surface;

[0035] 2 - Stirring device; 21 - Dispersion plate; 211a - First stirring wheel; 211b - Second stirring wheel; 211c - Third stirring wheel; 2111 - Protruding part; 2112 - Recessed part; 22 - Scraper; 221 - First part; 222 - Second part; 23 - Needle - like structure; 24 - Motor;

[0036] X - First direction; Y - Second direction. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] The terms "including" and "having" and any variations thereof in the description and claims of this application and the drawings are intended to cover but not exclude other elements. The word "a" or "an" does not exclude the presence of a plurality.

[0040] Reference to "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] The term "and / or" in this document is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the associated objects before and after are in an "or" relationship.

[0042] The orientation terms appearing in the following description are all the directions shown in the figures and do not limit the specific structure of this application. For example, in the description of this application, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this application.

[0043] In addition, expressions indicating directions such as the X direction, Y direction, and Z direction used to illustrate the operation and structure of the components of this embodiment are not absolute but relative. Although these indications are appropriate when the components are in the positions shown in the figures, when these positions change, these directions should have different interpretations to correspond to the change.

[0044] In addition, terms such as "first", "second", etc. in the specification and claims of this application or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0045] In the description of this application, unless otherwise specified, the meaning of "a plurality" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).

[0046] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, the "connection" or "linkage" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a screw, bolt, or other fixing member; a physical connection may also be a detachable connection, such as a snap connection or a clamping connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. The "connection" or "linkage" of a circuit structure may refer to not only a physical connection but also an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or it may be indirectly connected through at least one intermediate element, as long as the circuit is connected, and it may also be the communication inside two elements; a signal connection may refer to not only a signal connection through a circuit but also a signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0047] The production system of the battery needs to include a pulping device for obtaining the slurry required for manufacturing the battery electrode sheet.

[0048] There are at least two types of pulping devices in the related art. One of the devices takes at least 5 hours to stir the powder into the slurry; the other device generates insufficient shear force during the stirring process, so that the slurry in the device cannot be fully stirred, resulting in a large number of particles in the stirred slurry and the viscosity of the slurry not meeting the standard.

[0049] For example, as Figures 1 - 2 shown, there is only one dispersion disc and one scraper in the pulping device in the related art. Both the dispersion disc and the scraper are arranged on one side of the pulping barrel, so that the shear force exerted on the slurry when the pulping device stirs the slurry is concentrated on one side of the pulping barrel, making it difficult to stir the slurry evenly and affecting the quality of the slurry. Specifically, the slurry produced by the above pulping device has a large number of particles and the viscosity rebounds to about 1000 mPa·s after the slurry stands. Among them, viscosity rebound refers to the phenomenon that the viscosity of a substance returns to a higher level after decreasing under certain conditions. In addition, the pulping time of the pulping device in the related art is as long as 60 min / time.

[0050] Based on this, the present application provides a pulping device 100 and a battery production system. By arranging two stirring devices 2 in the pulping device 100, the pulping device 100 can exert a higher shear force on the slurry during the stirring process, and the stirring duration is shortened, improving the production efficiency while ensuring the quality of the slurry.

[0051] The following will be combined with Figures 3 - 6Specific descriptions are provided for the pulping equipment 100 and the battery production system provided in this application.

[0052] In a first aspect, this application provides a pulping equipment 100, which may include: a pulping barrel 1 and two stirring devices 2. The pulping barrel 1 has a receiving cavity for receiving the slurry. The two stirring devices 2 are arranged in the receiving cavity for stirring the slurry evenly. Moreover, the two stirring devices 2 are symmetrically arranged in the receiving cavity. The stirring device 2 includes a dispersion disc 21 and a scraper 22. The dispersion disc 21 rotates in the receiving cavity for providing a rotational speed to the slurry. The scraper 22 is arranged close to the dispersion disc 21 for providing a shearing force to the slurry. The dispersion disc 21 includes a plurality of stirring wheels arranged along the first direction X, and needle-like structures 23 are arranged on the stirring wheels. Among them, the first direction X is the height direction of the pulping barrel 1.

[0053] The pulping barrel 1 includes a receiving cavity composed of a bottom surface 11 and a side surface 12, enabling the pulping barrel 1 to be used for receiving the slurry. Among them, the side surface 12 and the bottom surface 11 are used to prevent the slurry from leaking out. This application does not make specific limitations on the shape of the pulping barrel 1. Exemplarily, as Figure 1 shown, the pulping barrel 1 can be a cylindrical barrel-shaped structure.

[0054] Furthermore, the slurry is stirred in the pulping barrel 1, and the acting force generated by the stirring will act on the pulping barrel 1. Based on this, the material of the pulping barrel 1 can have relatively high structural strength to prevent the pulping barrel 1 from being damaged due to the above-mentioned acting force.

[0055] The dispersion disc 21 is a structure for crushing, stirring, and grinding objects. Among them, the above-mentioned objects can be liquids, emulsions, or solid-liquid mixtures. For example: The dispersion disc 21 can stir the slurry, and the above-mentioned slurry is used for making battery electrodes. The dispersion disc 21 is generally made of corrosion-resistant materials such as stainless steel to adapt to different working environments and materials.

[0056] The dispersion disc 21 can include one or more stirring wheels. The stirring wheels rotate at a high speed in the above-mentioned receiving cavity to provide a rotational speed to the slurry, thereby playing a role in stirring and dispersing the slurry. Specifically, the center of the stirring wheel is connected to a rotating shaft, and the rotating shaft is connected to the output shaft of the motor 24, enabling the motor 24 to drive the stirring wheel to rotate. Among them, the centers of a plurality of stirring wheels are connected to one rotating shaft, enabling the plurality of stirring wheels to rotate coaxially. That is, a plurality of stirring wheels can be driven by one motor 24.

[0057] Exemplarily, as Figure 3 shown, the dispersion disc 21 in this application can include a plurality of stirring wheels arranged along the first direction X. The plurality of stirring wheels simultaneously provide a rotational speed to the slurry, so that the slurry in the receiving cavity can be stirred evenly in the first direction X, thereby improving the stirring effect of the pulping equipment 100. Among them, as Figure 3As shown, the first direction X is the height direction of the pulping barrel 1.

[0058] Among them, the stirring wheel can be a flat plate structure. The edge of the flat plate structure usually has serrations or teeth of other shapes, which are used to increase the contact points between the stirring wheel and the pulp, so as to generate a shearing force on the pulp by the stirring wheel, and then improve the stirring effect of the pulping equipment 100. Exemplarily, as Figure 3 shown, needle-like structures 23 can be provided on the stirring wheel. The needle-like structures 23 have a smaller volume compared to the serrations or teeth of other shapes, so that the contact area between the needle-like structures 23 and the pulp is smaller, increasing the shearing force and impact force generated by the stirring wheel on the pulp, thereby further improving the stirring effect of the pulping equipment 100.

[0059] The scraper 22 is a long strip structure arranged in the accommodating cavity. The scraper 22 has a certain width and thickness, enabling the scraper 22 to apply a shearing force to the pulp during the pulp stirring process. The scraper 22 is generally made of wear-resistant materials such as stainless steel and high-chromium alloy to adapt to different working environments and material characteristics.

[0060] Furthermore, a dispersing disk 21 and a scraper 22 can form a stirring device 2. The scraper 22 is arranged on one side close to the dispersing disk 21, so that the pulp rotating at a high speed with the dispersing disk 21 impacts on the scraper 22 at the closest distance, that is, the pulp impacts on the scraper 22 at the highest rotational speed, to increase the shearing force of the scraper 22 on the pulp, thereby further improving the stirring effect of the pulping equipment 100.

[0061] Furthermore, in order to further improve the production efficiency and ensure the pulp quality, the pulping equipment 100 provided in this application may include two stirring devices 2.

[0062] Among them, the above two stirring devices 2 are symmetrically arranged in the accommodating cavity. Exemplarily, as Figure 4 shown, with the center point of the bottom surface 11 of the pulping barrel 1 as the center of symmetry, the two stirring devices 2 are centrosymmetric structures and are respectively arranged on both sides of the accommodating cavity along the second direction Y. The two stirring devices 2 stir simultaneously, so that the pulp in the accommodating cavity can be stirred evenly in the second direction Y, thereby improving the stirring effect of the pulping equipment 100. Among them, as Figure 3 and Figure 4 shown, the second direction Y is the width direction of the pulping barrel 1.

[0063] Furthermore, compared with one stirring device 2, two stirring devices 2 stirring the same barrel of pulp simultaneously can greatly shorten the stirring time, thereby improving the production efficiency of the pulping equipment 100.

[0064] Specifically, for the pulp stirred by the above pulping equipment 100, the viscosity rebound after standing is ≤280 mPa·s, and the fineness of the pulp is stable without large particles.

[0065] In addition, the pulping time of the above pulping equipment 100 is only 30 min / time, which greatly improves the production efficiency.

[0066] Furthermore, the above pulping equipment 100 has low energy consumption. Compared with the existing pulping equipment 100 on the market, the energy consumption is reduced by 19% year-on-year. Specifically, the power of the relevant pulping equipment 100 is 197 KW / H, and the power of the pulping equipment 100 in this application is 357 KW / H.

[0067] In summary, the pulping equipment 100 provided in the first aspect embodiment of this application may include: a pulping barrel 1 and two stirring devices 2. The pulping barrel 1 is used to hold the pulp to prevent the pulp from leaking. The dispersion disk 21 in the stirring device 2 includes a plurality of stirring wheels arranged along the first direction X. The plurality of stirring wheels simultaneously provide a rotational speed to the pulp, so that the pulp in the accommodation cavity can be stirred evenly in the first direction X, thereby improving the stirring effect of the pulping equipment 100. The needle-like structure 23 on the stirring wheel is used to reduce the contact area between the stirring wheel and the pulp, thereby increasing the shear force generated by the stirring device 2 on the pulp, and further improving the stirring effect of the pulping equipment 100. Furthermore, the two stirring devices 2 are symmetrically arranged in the accommodation cavity, so that the pulp in the accommodation cavity is stirred evenly, further improving the stirring effect of the pulping equipment 100 and shortening the stirring duration, so that the pulping equipment 100 improves the production efficiency while ensuring the quality of the pulp.

[0068] Furthermore, this application does not specifically limit the shape of the stirring wheel. For example, the stirring wheel can be circular, oval or cross-shaped.

[0069] To further improve the shear force exerted by the pulping equipment 100 on the pulp and the stirring efficiency of the pulping equipment 100, preferably, as Figure 4 shown, the stirring wheel is a cross-shaped structure. The cross-shaped structure includes four protruding parts 2111 and four concave parts 2112. Two adjacent protruding parts 2111 are connected by a concave part 2112, and there is a first included angle between two adjacent protruding parts 2111. The needle-like structure 23 is arranged on the protruding part 2111.

[0070] Among them, when the cross-shaped stirring wheel rotates, the existence of the first included angle can make the pulp in the accommodation cavity fill the above four concave parts 2112, so that more pulp can participate in the stirring of the dispersion disk 21, improving the stirring effect of the pulping equipment 100 and ensuring the quality of the pulp.

[0071] In addition, compared with the circular stirring wheel, the contact area between the four protruding parts 2111 and the slurry is smaller, which increases the shearing force of the dispersion disc 21 on the slurry, thereby improving the stirring efficiency.

[0072] Furthermore, the needle-like structure 23 is arranged on the protruding part 2111, which enables the needle-like structure 23 to come into contact with the slurry preferentially, thereby giving full play to the shearing force of the needle-like structure 23 on the slurry. Specifically, one needle-like structure 23 can be arranged on each protruding part 2111.

[0073] In summary, the cruciform structure of the stirring wheel allows more slurry to participate in the stirring of the dispersion disc 21 and increases the shearing force of the dispersion disc 21 on the slurry, thereby ensuring the quality of the slurry and improving the production efficiency.

[0074] Furthermore, in order to ensure the stirring effect of the pulping device 100 and enable the pulping device 100 to have sufficient shearing force on the slurry, the present application can further limit the above-mentioned first included angle.

[0075] In some embodiments, the first included angle is greater than or equal to 90° and less than or equal to 100°.

[0076] Specifically, the angle of the first included angle can be 90°, 93°, 98° or 100°.

[0077] According to the description of the above embodiments, when the first included angle is greater than or equal to 90° and less than or equal to 100°, when the stirring wheel rotates, there is enough space to accommodate more slurry to participate in the stirring, and it can also ensure that the shearing force generated by the protruding part 2111 on the slurry is as large as possible.

[0078] Furthermore, the present application can also limit the structure of the protruding part 2111. For example, in some embodiments, as Figure 4 shown, the top end of the protruding part 2111 is arc-shaped. The top end is the end of the protruding part 2111 close to the rotation center of the dispersion disc 21.

[0079] When the stirring wheel rotates at a high speed in the accommodating cavity, the protruding part 2111 provides a large shearing force for the slurry, causing the protruding part 2111 to bear a large pressure, thereby damaging the protruding part 2111 and affecting the stirring effect of the pulping device 100. Based on this, setting the top end of the protruding part 2111 to be arc-shaped can make the protruding part 2111 not easily damaged, thereby ensuring the stirring effect of the pulping device 100.

[0080] Similarly, as Figure 4 shown, the concave part 2112 for connecting the protruding part 2111 can also be arc-shaped.

[0081] According to the description of the above embodiments, the top of the convex portion 2111 being arc-shaped can prevent the convex portion 2111 from being easily damaged, thereby ensuring the stirring effect of the pulping device 100, that is, ensuring the quality of the pulp.

[0082] Furthermore, the present application can further define the needle-like structure 23 in the stirring wheel.

[0083] Among them, in some embodiments, the length of the needle-like structure 23 extending along the first direction X is greater than or equal to 8 mm.

[0084] The longer the length of the needle-like structure 23 extending along the first direction X, the larger the contact area between the needle-like structure 23 and the pulp, that is, the area for shearing the pulp is increased, making the pulp stirring more sufficient and ensuring the quality of the pulp. Specifically, the length of the needle-like structure 23 extending along the first direction X can be greater than or equal to 8 mm. For example, the length of the extension along the first direction X can be 8 mm, 12 mm, or 15 mm.

[0085] According to the description of the above embodiments, the length of the needle-like structure 23 extending along the first direction X being greater than or equal to 8 mm can increase the area for shearing the pulp by the stirring device 2, making the pulp stirring more sufficient, thereby ensuring the quality of the pulp.

[0086] Furthermore, the present application can further define the diameter of the stirring wheel.

[0087] The diameters of the plurality of stirring wheels arranged along the first direction X can be different. Specifically, the diameter of the stirring wheel arranged at the bottommost part is the largest, and the diameters of the remaining stirring wheels decrease in sequence along the first direction X. Here, taking the example of three stirring wheels arranged in the dispersion disc 21, the following is a specific description of this solution.

[0088] Exemplarily, as Figure 3 and Figure 4 shown, the stirring wheels include a first stirring wheel 211a, a second stirring wheel 211b, and a third stirring wheel 211c. The first stirring wheel 211a is close to the bottom of the pulping barrel 1. The third stirring wheel 211c is far from the bottom of the pulping barrel 1. The second stirring wheel 211b is arranged between the first stirring wheel 211a and the third stirring wheel 211c. The diameter of the first stirring wheel 211a is greater than the diameter of the second stirring wheel 211b. The diameter of the second stirring wheel 211b is greater than the diameter of the third stirring wheel 211c.

[0089] According to Figure 1It can be seen that, when viewed from the side 12 of the pulping barrel 1, the edges of the first stirring wheel 211a, the second stirring wheel 211b, and the third stirring wheel 211c are connected in a straight line. There is an angle between this straight line and the side 12 of the pulping barrel 1, and there is also an angle between this straight line and the bottom surface 11 of the pulping barrel 1, so that more pulp is filled in this angle and participates in the stirring of the dispersing disc 21 together, thereby improving the stirring efficiency and shortening the stirring time.

[0090] According to the description of the above embodiments, the diameter of the first stirring wheel 211a is larger than that of the second stirring wheel 211b, and the diameter of the second stirring wheel 211b is larger than that of the third stirring wheel 211c, which can enable more pulp to participate in the stirring, thereby improving the stirring efficiency and shortening the stirring time of the pulping equipment 100.

[0091] Furthermore, to make the pulp stirred by the pulping equipment 100 more uniform, the structure of the scraper 22 can be further defined in this application.

[0092] In some embodiments, as Figure 4 shown, the scraper 22 includes a first part 221 and a second part 222. The first part 221 extends along the bottom surface 11 of the pulping barrel 1. The second part 222 extends along the side 12 of the pulping barrel 1.

[0093] Among them, the first part 221 extending along the bottom surface 11 of the pulping barrel 1 is used to provide a shearing force for the pulp at the bottom of the pulping barrel 1.

[0094] Among them, the second part 222 extending along the side 12 of the pulping barrel 1 is used to provide a shearing force for the pulp on the side 12 of the pulping barrel 1.

[0095] The scraper 22 includes a first part 221 and a second part 222, enabling the scraper 22 to simultaneously provide a shearing force for the pulp at the bottom and on the side 12 of the pulping barrel 1, so as to ensure that all the pulp in the pulping barrel 1 can be sheared by the scraper 22, making the pulp stirred by the pulping equipment 100 more uniform and ensuring the quality of the pulp.

[0096] Specifically, the larger the size of the first part 221, the more pulp it can provide a shearing force for, thereby improving the stirring efficiency. However, it should be noted that the size of the first part 221 should be smaller than the height of the pulping barrel 1.

[0097] Similarly, the larger the size of the second part 222, the more pulp it can provide a shearing force for, thereby improving the stirring efficiency. However, it should be noted that the size of the second part 222 should be smaller than half of the width of the pulping barrel 1.

[0098] According to the description of the above embodiments, the scraper 22 includes a first part 221 extending along the bottom surface 11 of the pulping barrel 1 and a second part 222 extending along the side surface 12 of the pulping barrel 1, ensuring that the pulp in the pulping barrel 1 can be sheared by the scraper 22, so that the pulp stirred by the pulping device 100 is more uniform and the quality of the pulp is ensured.

[0099] Further, in some embodiments, there is a first distance between the first part 221 and the bottom surface 11 of the pulping barrel 1. The first distance is less than or equal to 6 mm.

[0100] The small first distance between the first part 221 and the bottom surface 11 of the pulping barrel 1 can prevent the pulp from adhering to the bottom surface 11 of the pulping barrel 1 and being unable to participate in stirring, thus ensuring the pulping effect of the pulping device 100. Specifically, the first distance can be less than or equal to 6 mm. For example, the first distance can be 2 mm, 4 mm or 6 mm.

[0101] According to the description of the above embodiments, the first distance being less than or equal to 6 mm can prevent the pulp from adhering to the bottom surface 11 of the pulping barrel 1 and being unable to participate in stirring, thus ensuring the pulping effect of the pulping device 100.

[0102] Further, as Figure 5 and Figure 6 shown, in some embodiments, there is a second distance between the second part 222 and the side surface 12 of the pulping barrel 1. The second distance is less than or equal to 6 mm.

[0103] The small second distance between the second part 222 and the side surface 12 of the pulping barrel 1 can prevent the pulp from adhering to the side surface 12 of the pulping barrel 1 and being unable to participate in stirring, thus ensuring the pulping effect of the pulping device 100. Specifically, the second distance can be less than or equal to 6 mm. For example, the second distance can be 2 mm, 4 mm or 6 mm.

[0104] According to the description of the above embodiments, the second distance being less than or equal to 6 mm can prevent the pulp from adhering to the side surface 12 of the pulping barrel 1 and being unable to participate in stirring, thus ensuring the pulping effect of the pulping device 100.

[0105] In a second aspect, the present application provides a battery production system, including the pulping device described in any one of the above embodiments. The pulping device can be used to stir the electrode material in the battery. This pulping device can make the components in the electrode material stirred more evenly, thereby improving the quality of the electrode material.

[0106] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0107] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pulping device, characterized in that: include: pulping barrel and two stirring devices; The pulping barrel has a containing cavity for containing pulp; The two stirring devices are arranged in the containing chamber and are used to stir the slurry evenly; Furthermore, two stirring devices are symmetrically arranged in the accommodating chamber; The stirring device comprises a dispersion disk and a scraper, wherein the dispersion disk is used to provide a rotation speed for the slurry; The scraper is arranged close to the dispersion disk and is used to provide shear force to the slurry; The dispersion disk comprises a plurality of stirring wheels arranged along a first direction, and the stirring wheels are provided with needle-shaped structures; Wherein, the first direction is the height direction of the pulping barrel.

2. The pulping equipment according to claim 1, characterized in that: The stirring wheel is a cross-shaped structure; The cross-shaped structure includes four raised portions and four recessed portions; Two adjacent protrusions are connected via a recess; and there is a first angle between two adjacent protrusions; The needle-like structure is arranged on the protrusion.

3. The pulping equipment according to claim 2, characterized in that: There is a first angle between the protruding portion and the recessed portion.

4. The pulping equipment according to any one of claims 3, characterized in that: The first angle is greater than or equal to 90°; Furthermore, the first angle is less than or equal to 180°.

5. The pulping equipment according to claim 2, characterized in that: The needle-like structure extends along the first direction for a length greater than or equal to 8 mm.

6. The pulping equipment according to any one of claims 1 to 5, characterized in that: The stirring wheels include a first stirring wheel, a second stirring wheel and a third stirring wheel; The first stirring wheel is close to the bottom of the pulping barrel; The third stirring wheel is away from the bottom of the pulping barrel; The second stirring wheel is arranged between the first stirring wheel and the third stirring wheel; The diameter of the first stirring wheel is greater than the diameter of the second stirring wheel; The diameter of the second stirring wheel is greater than the diameter of the third stirring wheel.

7. The pulping equipment according to claim 1, characterized in that: The scraper includes a first part and a second part; The first part is extended along the bottom surface of the pulping barrel; The second portion is extended along the side of the pulping barrel.

8. The pulping equipment according to claim 7, characterized in that: There is a first distance between the first portion and the bottom of the pulping barrel, and the first distance is less than or equal to 6 mm.

9. The pulping equipment according to claim 7 or 8, characterized in that: There is a second distance between the second portion and the side wall of the pulping barrel, and the second distance is less than or equal to 6 mm.

10. A battery production system, comprising the pulping device according to any one of claims 1 to 9, wherein the pulping device is used for stirring electrode materials in the battery.

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