CN215463958U - Kneading device and manufacturing equipment of battery slurry - Google Patents

Abstract

The utility model discloses a kneading device and a manufacturing device of battery slurry, wherein the kneading device comprises a kneading tank, at least one first kneading piece, at least one second kneading piece and a first driving mechanism; the first kneading piece comprises a driving shaft and a first propeller blade, and the first propeller blade is fixedly connected to the circumferential surface of the driving shaft and is positioned in the kneading tank; the second kneading part comprises a first rotating seat and a second propeller blade, and the second propeller blade is fixedly connected to the first rotating seat and extends towards one end of the kneading tank far away from the first rotating seat; the first driving mechanism is connected with the first rotating shaft and the first rotating seat and used for driving the first propeller blade and the second propeller blade to rotate in the kneading tank; the first propeller blade and the second propeller blade rotate in opposite directions. The first kneading piece and the second kneading piece work in a matched mode, so that the kneading device is guaranteed to have enough rigidity and not to deform, and the dispersion, the kneading efficiency and the conveying efficiency of the kneading device to battery slurry are considered.

Description

Kneading device and manufacturing equipment of battery slurry

Technical Field

The application relates to the technical field of batteries, in particular to a kneading device and a battery slurry manufacturing device

Background

Batteries are used as energy supply devices commonly adopted in the field of various electronic products, and the development and the demand of the batteries in the fields of electric vehicles, energy storage and the like are rapidly increased.

In the related art, a kneading device is provided in a production line of a battery slurry in a battery manufacturing process, but the existing kneading device cannot simultaneously achieve both the kneading effect of the battery slurry and the conveying efficiency of the battery slurry.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. For this reason, the present application proposes a kneading device that can simultaneously achieve both the efficiency of kneading the battery paste and the efficiency of transporting the battery paste.

The application also provides a manufacturing device of the battery slurry with the kneading device.

The kneading device according to the embodiment of the present application includes a kneading tank, at least one first kneading member, at least one second kneading member, and a first driving mechanism: the kneading tank is provided with a powder material feeding port, a discharging port and at least one first solvent feeding port; the first kneading member comprises a driving shaft and a first screw blade, the driving shaft is arranged in the kneading tank and is parallel to the axial direction of the kneading tank, and the first screw blade is fixedly connected to the peripheral surface of the driving shaft; the second kneading piece comprises a first rotating seat and a second propeller blade, the first rotating seat is rotatably connected to one end of the kneading tank, the second propeller blade is fixedly connected to the first rotating seat and extends towards one end of the kneading tank far away from the first rotating seat, and the first propeller blade and the second propeller blade can work in a matched mode to break and knead materials; the first driving mechanism is connected with the first rotating shaft and the first rotating seat and used for driving the first rotating shaft, the first propeller blade and the second propeller blade to rotate in the kneading tank; the first propeller blade and the second propeller blade rotate in opposite directions.

The kneading device according to the embodiment of the present application has at least the following advantageous effects: through the arrangement of the driving shaft, the central shaft position of the first propeller blade is in a solid design; the second propeller blade is not provided with a driving shaft, and the center position of the second propeller blade is designed to be hollow. By adopting the structure, firstly, the central shaft position of the first kneading piece adopts a solid design, so that the first kneading piece has enough rigidity and does not deform, thereby ensuring the service life of the kneading device; moreover, the solid first kneading member increases the stirring space of the kneading device so that the battery slurry can be preferably stirred; and secondly, the central shaft position of the second kneading piece adopts a hollow design, so that the second kneading piece increases the flowing space of the slurry, and the phenomenon that the local battery slurry is excessively extruded due to the fact that the local battery slurry cannot flow is avoided, and the secondary caking of the battery slurry is avoided. In conclusion, the first kneading element and the second kneading element work cooperatively to knead the battery slurry, so that the kneading device is ensured to have enough rigidity without deformation, the dispersion, the kneading efficiency and the solid content of the battery slurry and the prevention of the reconnection of the battery slurry by the kneading device are considered, and the hollow second kneading element is ensured to ensure the conveying efficiency of the kneading device to the battery slurry.

According to some embodiments of the present application, the kneading apparatus further comprises: the first rotating seat and the first rotating shaft are both rotationally connected to the second rotating seat, and the first driving mechanism is mounted on the second rotating seat; and the second driving piece is connected with the second rotating seat and used for driving the second rotating seat to rotate, and the rotating central shaft of the second rotating seat is parallel to or coincided with the central shaft of the kneading tank.

According to some embodiments of the present application, the second rotary base rotates in a direction opposite to a rotation direction of the driving shaft so as to hinder the material from climbing toward the powder supply opening along a length direction of the driving shaft.

According to some embodiments of the application, the kneading device further comprises a third kneading element having a structure consistent with the second kneading element, the third kneading element is used for cooperating with the second kneading element to break and knead the material, and the third kneading element is not used for cooperating with the first kneading element.

According to some embodiments of the present application, the first driving mechanism includes a first driving member and a gear assembly, the gear assembly is connected between the driving shaft of the first driving member and the first kneading member and the second kneading member, and the first driving member simultaneously drives the first kneading member and the second kneading member to rotate through the gear assembly; or the first driving mechanism comprises a plurality of first driving pieces, one first driving piece is connected with one first kneading piece or one second kneading piece, and each first driving piece is used for independently driving the first kneading piece or the second kneading piece to rotate.

According to some embodiments of the present application, the frit material supply port and the at least one first solvent supply port are correspondingly arranged at the initial positions of the first propeller blade and the second propeller blade, and the discharge port is correspondingly arranged at the tail positions of the first propeller blade and the second propeller blade; the kneading gap between the first propeller blade and the second propeller blade is between 2mm and 500 mm.

According to some embodiments of the present application, the kneading tank is vertically arranged, the powder feed port is arranged at the upper end of the kneading tank, and the discharge port is arranged at the lower end of the kneading tank; the inner cavity of the lower end part of the kneading tank is a conical cavity, and the discharge port is positioned in the center of the conical cavity.

The manufacturing equipment of the battery slurry according to the embodiment of the application comprises the kneading device, the continuous dispersing device and the circulation transfer device, wherein the kneading device comprises: the kneading device is used for kneading and dispersing the materials to form battery slurry; the continuous dispersing device comprises a dispersing tank, a dispersing piece and a third driving piece, wherein the dispersing tank is communicated with the kneading device so that the battery slurry in the kneading device is conveyed to the dispersing tank, the dispersing piece is arranged in the dispersing tank, and the third driving piece is connected with the dispersing piece and is used for driving the dispersing piece to rotate in the dispersing tank so that the dispersing piece can shear and disperse the kneaded battery slurry; the circulating transfer device comprises a transfer tank, a dispersing paddle, a dispersing disc and a power assembly, the transfer tank is communicated with the dispersing tank, the dispersing paddle and the dispersing disc are respectively and independently arranged in the transfer tank, the power assembly is used for driving the dispersing paddle to rotate around a first rotating central shaft so that the dispersing paddle can stir the battery slurry, and the power assembly is also used for driving the dispersing disc to rotate around a second rotating central shaft so that the dispersing disc can disperse and shear the battery slurry; the second rotating central shafts are arranged in parallel at one side of the first rotating central shaft, and the transfer tank is provided with a second solvent feeding port.

The manufacturing equipment of the battery slurry has at least the following beneficial effects: the third driving piece drives the dispersing piece to rotate in the dispersing tank, and the rotating dispersing piece breaks the battery slurry into groups and cuts the battery slurry, so that the battery slurry is further prepared. The dispersed battery slurry is conveyed to a transfer tank, the rotating dispersion paddle is used for axially and radially stirring the battery slurry, and the battery slurry spirally rotates; at the same time, the second dispersion disc is just inside the rotational trajectory of the battery paste, so that the rotating second dispersion disc just shears the spirally rotating battery paste. In conclusion, the dispersion paddle and the second dispersion disc work in a matched mode, so that the battery slurry is stirred and sheared at the same time, and the solid content of the battery slurry and the dispersion consistency of the battery slurry are guaranteed.

According to some embodiments of the present application, a gap between an outer edge of the dispersion member and an inner wall of the dispersion tank is 0.5mm to 1000 mm; the dispersing pieces and/or the dispersing discs are blade type dispersing discs or turbine type dispersing discs, and the linear speed of the outer edges of the dispersing pieces and/or the dispersing discs is 2m/s-50 m/s.

According to some embodiments of the present application, the dispersion tank and the transit tank each have a feed inlet and a discharge outlet; the battery slurry manufacturing equipment further comprises a circulating conveying device, the circulating conveying device comprises a pump, a first pipeline and a second pipeline, the first pipeline is connected between the discharge port of the dispersing tank and the feed port of the transfer tank, the second pipeline is connected between the discharge port of the transfer tank and the feed port of the dispersing tank, and the pump is used for driving the battery slurry to circulate between the dispersing tank and the transfer tank; or the dispersion tank and the transfer tank are both provided with a feed inlet and a discharge outlet, and the kneading tank is provided with a return port corresponding to the starting positions of the first propeller blade and the second propeller blade; the battery slurry manufacturing equipment further comprises a circulating conveying device, wherein the circulating conveying device comprises a pump, a three-way valve, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline, and the three-way valve is provided with a first port, a second port and a third port; the third pipeline is connected between a discharge hole of the dispersion tank and a feed inlet of the transfer tank, the fourth pipeline is connected between a discharge hole of the transfer tank and a first port of the three-way valve, the fifth pipeline is connected between a second port of the three-way valve and a feed inlet of the dispersion tank, and the sixth pipeline is connected between a third port of the three-way valve and the material return hole; the second port and the third port can be selectively closed, and when the third port is closed, the pump is used for driving the battery slurry to circulate between the circulation transfer device and the continuous dispersion device; when the second port is closed, the pump is used for driving the battery slurry to circulate among the circulation transfer device, the kneading device and the continuous dispersion device in sequence.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic view of the overall structure of a manufacturing apparatus according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a first kneading element and a second kneading element according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is a schematic cross-sectional view of a kneading apparatus of an embodiment of the present application;

FIG. 5 is a schematic view showing another cross-sectional structure of a kneading apparatus of an embodiment of the present application;

FIG. 6 is a front view of a first nip of an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of FIG. 6;

FIG. 8 is a schematic diagram of a helical trajectory of a first propeller blade in accordance with an embodiment of the present application;

FIG. 9 is a front view of a second nip of an embodiment of the present application;

FIG. 10 is a schematic cross-sectional view of FIG. 9;

FIG. 11 is a schematic view of a helical trajectory of a second propeller blade in accordance with an embodiment of the present application;

fig. 12 is a schematic structural view of a dispersion member according to an embodiment of the present application;

fig. 13 is another schematic structural view of a dispersion member according to an embodiment of the present application;

FIG. 14 is a schematic view of another structure of a dispersion member according to an embodiment of the present application;

fig. 15 is a schematic structural view of a circulation relay apparatus according to an embodiment of the present application;

fig. 16 is another schematic structural diagram of a manufacturing apparatus of battery paste according to an embodiment of the present application.

Reference numerals:

a kneading tank 100; a powder supply port 110, a tapered part 120, a discharge port 121, a first solvent supply port 130, a powder bin 140, and a screw feeder 150;

a first kneading member 200, a drive shaft 210, a first propeller blade 220;

a second kneading member 300, a first rotating base 310, a second propeller blade 320;

a third kneading member 400;

a first drive mechanism 500, a first drive member 510;

a second rotary base 600, a second driving member 610;

a continuous dispersion apparatus 700, a dispersion tank 710, a dispersion member 720, a third driving member 730;

a circulation transfer device 800, a transfer tank 810, a second solvent feed port 811, a dispersion paddle 820, a first rotation center shaft 821, a dispersion plate 830, and a second rotation center shaft 831; a power assembly 840;

a circulatory conveyance device 900, a first conduit 910, a second conduit 920, a third conduit 930, a fourth conduit 940, a fifth conduit 950, a sixth conduit 960, a three-way valve 970, a first port 971, a second port 972, a third port 973, and a pump 980.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

According to the present application, disclosed is a kneading apparatus, referring to fig. 1 to 3, comprising a kneading tank 100, at least one first kneading member 200, at least one second kneading member 300, and a first driving mechanism 500, wherein the kneading tank 100 is provided with a powder feed port 110, a discharge port 121, and at least one first solvent feed port 130; the first kneading member 200 includes a driving shaft 210 and a first screw blade 220, the driving shaft 210 is disposed in the kneading tank 100 and is disposed in parallel with the axial direction of the kneading tank 100, the first screw blade 220 is fixedly connected to the circumferential surface of the driving shaft 210, and in a specific embodiment, the first screw blade 220 is integrally formed with the driving shaft 210; the second kneading element 300 comprises a first rotating base 310 and a second propeller blade 320, the first rotating base 310 is rotatably connected to one end of the kneading tank 100, the second propeller blade 320 is fixedly connected to the first rotating base 310 and extends towards one end of the kneading tank 100 far away from the first rotating base 310, and the first propeller blade 220 and the second propeller blade 320 can work in cooperation to break and knead the battery slurry; the first driving mechanism 500 is connected with the driving shaft 210 and is used for driving the driving shaft 210 and the first propeller blades 220 to synchronously rotate in the kneading tank 100; the first driving mechanism 500 is further connected with the first rotating base 310, and is used for driving the second propeller blades 320 to rotate in the kneading tank 100; the first propeller blade 220 and the second propeller blade 320 rotate in opposite directions so that the first propeller blade 220 and the second propeller blade 320 can cooperate; the powder material inlet 110 and the first solvent inlet 130 are correspondingly disposed at the initial positions of the first propeller blade 220 and the second propeller blade 320, and the material outlet 121 is correspondingly disposed at the tail positions of the first propeller blade 220 and the second propeller blade 320.

In the manufacturing process of the battery slurry, the kneading device in the scheme can be used for kneading the battery slurry, and the kneading device can provide larger shearing force, viscous force, friction force and the like, so that the battery powder can be quickly soaked and broken into balls under the action of the kneading device, the dispersion of the slurry is promoted, and the solid content in the subsequent battery slurry is ensured.

Specifically, under the action of the first driving mechanism 500, the first driving mechanism 500 drives the driving shaft 210 to rotate, and the driving shaft 210 drives the first propeller blades 220 to continuously rotate in the kneading tank 100; similarly, the first driving mechanism 500 drives the first rotating base 310 to rotate, the first rotating base 310 drives the second propeller blade 320 to continuously rotate in the kneading tank 100, and the first propeller blade 220 and the second propeller blade 320 rotate oppositely and work cooperatively; meanwhile, since the powder supply port 110 and the at least one first solvent supply port 130 are correspondingly disposed at the initial positions of the first propeller blade 220 and the second propeller blade 320, the battery powder is conveyed from the powder supply port 110 to the initial positions of the first propeller blade 220 and the second propeller blade 320, and the solvent is conveyed from the first solvent supply port 130 to the initial positions of the first propeller blade 220 and the second propeller blade 320, so that the solvent wets the battery powder. After that, the material, i.e. the wetted battery powder, moves towards the discharge opening 121 under the action of the first propeller blade 220 and the second propeller blade 320; in the material conveying process, the first propeller blade 220 and the second propeller blade 320 work in a matching mode, so that the wetted battery powder is broken into lumps and kneaded, and further preliminary battery slurry is obtained, and therefore the solid content in the battery slurry is guaranteed; meanwhile, in the process of kneading the battery slurry by the first propeller blade 220 and the second propeller blade 320, the first propeller blade 220 and the second propeller blade 320 also play a role in rapidly fusing the solvent and the battery powder.

It should be noted that, a kneading gap exists between the first screw blade 220 of the first kneading member 200 and the second screw blade 320 of the second kneading member 300, so that during the rotation of the first kneading member 200 and the second kneading member 300, the battery slurry passes through the kneading gap under the action of the first screw blade 220 and the second screw blade 320, thereby kneading the battery slurry; further, if a kneading gap having a sufficiently small size is also present between the first screw blade 220 of the first kneading member 200 and the second screw blade 320 of the second kneading member 300 and the side wall of the kneading tank 100, the kneading gap can also complete the kneading of the battery slurry.

Also, referring to fig. 2, by the arrangement of the driving shaft 210, the central axis position of the first propeller blade 220 is of a solid design; the second propeller blade 320 is not designed as a driving shaft, and the center position of the second propeller blade 320 is designed to be hollow. By adopting the above structure, firstly, the central axis position of the first kneading element 200 adopts a solid design, so that the first kneading element 200 has sufficient rigidity without deformation, thereby ensuring the service life of the kneading device; also, the solid first kneading member 200 increases the stirring space of the kneading apparatus so that the battery slurry can be preferably stirred; secondly, the central axis of the second kneading member 300 is designed to be hollow, so that the second kneading member 300 increases the flowing space of the slurry, and prevents the local battery slurry from being excessively extruded due to the incapability of flowing, thereby preventing the secondary agglomeration of the battery slurry. In summary, the first kneading element 200 and the second kneading element 300 work cooperatively to knead the battery paste, so that the kneading device is ensured to have enough rigidity without deformation, the dispersion and the kneading efficiency of the battery paste and the prevention of the rejoining of the battery paste are both considered, and the hollow second kneading element 300 ensures the conveying efficiency of the kneading device for the battery paste.

In some embodiments, there is one first kneading element 200, there are a plurality of second kneading elements 300, and a plurality of second kneading elements 300 are arranged side by side around the first kneading element 200, such that the second propeller blades 320 of a plurality of second kneading elements 300 are all working in cooperation with the first propeller blades 220 of one first kneading element 200. For example, as shown in fig. 4, the second kneading member 300 has two, and the second screw blades 320 of the two second kneading members 300 cooperate with the first screw blades 220 of one first kneading member 200 to disperse, break up, knead, etc. the battery slurry.

In other embodiments, instead of the embodiment shown in fig. 4, the positions of the first kneading elements 200 and the second kneading elements 300 can be interchanged, that is, the first kneading elements 200 have a plurality, the second kneading elements 300 have one (not shown), and a plurality of first kneading elements 200 are arranged side by side around the second kneading elements 300, so that the first propeller blades 220 of a plurality of first kneading elements 200 are all cooperated with the second propeller blades 320 of one second kneading element 300; for example, two first kneaders 200 and one second kneader 300 are used, and the first screw blades 220 of the two first kneaders 200 and the second screw blades 320 of the one second kneader 300 cooperate to disperse, break up, knead, etc. the battery slurry.

In some embodiments, as shown in fig. 5, the kneading apparatus further comprises a third kneading element 400 having a structure identical to that of the second kneading element 300, the third kneading element 400 is juxtaposed on one side of the second kneading element 300, and the third kneading element 400 is only cooperated with the second kneading element 300 and is not cooperated with the first kneading element 200. Through the setting of third kneading part 400, when improving the efficiency of kneading the device, can avoid local battery thick liquids because unable flow and by excessive extrusion, and then lead to battery thick liquids secondary caking.

For the analysis of the first and second kneaders 200 and 300, as shown in fig. 2, the first and second kneaders 200 and 300 are both double-wing helical surfaces, and may be single-wing helical surfaces or other multi-wing helical surfaces. A front view of the first nip 200, as shown in FIG. 6, a cross-sectional view of the first nip 200, as shown in FIG. 7; as shown in fig. 9, a front view of the second nip 300, and as shown in fig. 10, a cross-sectional view of the second nip 300. Further, as shown in fig. 8 and 11, the first propeller blade 220 of the first kneading member 200 and the second propeller blade 320 of the second kneading member 300 may be rotated left or right, but the first propeller blade 220 and the second propeller blade 320 are rotated oppositely; as shown in fig. 8, the first propeller blade 220 rotates left, the pitch angle of the first propeller blade 220 is α 1, and the pitch of the first propeller blade 220 is H1; as shown in fig. 11, the second propeller blade 320 is rotated to the right, the pitch angle of the second propeller blade 320 is α 2, and the pitch of the second propeller blade 320 is H2. According to the processing difficulty and the like, the two screw pitches are both 5mm to 2000 mm. .

Further, the sizes of the helix angle alpha 1 and the helix angle alpha 2 are between 1 degree and 89 degrees, generally, the smaller the helix angle is, the more obvious the vortex formed in the axial section is, and the better the kneading effect is; when considering machining, equipment space, loads, etc., the magnitudes of the helix angles α 1 and α 2 are generally selected to be between 20 ° and 50 °, the magnitude relationship between α 1 and α 2: tan α 1 ═ itan α 2, where i is the ratio of the autorotation speeds of the hollow and solid propellers.

In some embodiments, referring to fig. 2, there is a certain clearance between the first propeller blade 220 and the second propeller blade 320, and if the clearance is too small, there is a risk of interference and wear of the equipment; if the gap is too large, the kneading effect is deteriorated; therefore, in the present embodiment, the gap between the first propeller blade 220 and the second propeller blade 320 is selected to be between 2mm and 500mm, which not only reduces the risk of abrasion, but also ensures the kneading effect.

Moreover, the first propeller blade 220 and the second propeller blade 320 both have a certain axial length, the longer the length is, the longer the battery slurry stays in the kneading tank 100, and the better the kneading effect is, but the cost of equipment, factory buildings and the like needs to be considered comprehensively, in the scheme of the application, the axial length of the first propeller blade 220 and the axial length of the second propeller blade 320 are selected to be between 0.1m and 8 m.

In addition, the tails of the first and second screw blades 220 and 320 have a certain clearance, which is selected to be between 2mm and 500mm, from the corresponding end of the kneading pot 100.

Further, the rotation speeds of the first propeller blade 220 and the second propeller blade 320 may be the same, or may be set according to a certain ratio, that is, the speed ratio of the first propeller blade 220 to the second propeller blade 320 is between 0.1 and 200, and the load and the stirring effect of the device need to be integrated.

Regarding the design of the first driving mechanism 500, in some embodiments, the first driving mechanism 500 includes a first driving member 510 and a gear assembly (not shown), the first driving member 510 is a motor, and the gear assembly is connected between the driving shaft 210 of the motor and the first kneading member 200, the second kneading member 300, and the third kneading member 400, so that the motor simultaneously drives the first kneading member 200, the second kneading member 300, and the third kneading member 400 to rotate through the gear assembly, thereby breaking and kneading the battery slurry. The gear assembly is composed of a plurality of gears which are engaged with each other, at least one gear is fixedly connected to a driving shaft of the motor, at least one gear is fixedly connected to the first kneading member 200, at least one gear is fixedly connected to the second kneading member 300, at least one gear is fixedly connected to the third kneading member 400, and the plurality of gears are engaged with each other, thereby realizing the transmission of the rotating force. Of course, the kneading apparatus only adopts the structure in fig. 1, the kneading apparatus does not have the third kneading element 400, and there is no corresponding gear fixedly mounted on the third kneading element 400.

In other embodiments, as shown in fig. 1, instead of using one first driving member 510, the first driving mechanism 500 includes a plurality of first driving members 510, the first driving members 510 are motors, and the number of the motors is just the same as the total number of the first kneading member 200, the second kneading member 300, and the third kneading member 400, so that each motor is connected to the corresponding kneading member, i.e., the first kneading member 200, the second kneading member 300, and the third kneading member 400, so as to drive the corresponding kneading members to rotate independently. Of course, the kneading device adopts the kneading mechanism in fig. 1, the kneading device does not have the third kneading element 400, and no corresponding motor is connected with the third kneading element 400.

In addition, it should be noted that, if the number of the motors is plural, but less than the total number of the kneading elements, the motors are flexibly arranged according to the actual requirement of the kneading device, so that the corresponding motor drives the corresponding number of the kneading elements, and can drive one kneading element or drive a plurality of kneading elements.

In order to further improve the kneading effect of the kneading device on the battery paste, in some embodiments, referring to fig. 1, the kneading device further includes a second rotary base 600 and a second driving member 610, the second rotary base 600 is rotatably connected to one end of the kneading tank 100, the first driving member 510 is fixedly mounted on the second rotary base 600, and the first rotary base 310 and the driving shaft 210 are both rotatably connected to the second rotary base 600; meanwhile, the second driving member 610 is fixedly installed at an end of the kneading tank 100, the second driving member 610 is a motor, and a driving shaft 210 of the motor is connected to the second rotating base 600 for driving the second rotating base 600 to rotate.

Specifically, because the arrangement space of the kneading elements is limited, a large gap exists between the inner side wall of the kneading tank 100 and the kneading elements (e.g., the upper region and the lower region of the kneading tank in the cross-sectional view of fig. 2) in some places along the circumferential direction of the kneading tank 100, and the gap is also referred to as a dead angle region, and the gap causes the kneading elements not to knead the battery slurry in the gap, thereby causing poor kneading effect of the battery slurry. Through adopting above-mentioned scheme, second driving piece 610 drive second rotates seat 600 and rotates, and second rotates seat 600 and drives to knead between fingers piece and first paddle and revolve around the center pin of kneading jar 100 for it can be between this dead angle to knead between the pieces, thereby can knead between the battery thick liquids at this dead angle, and then further improves the effect of kneading device to battery thick liquids, and the solid content of battery thick liquids obtains guaranteeing.

Regarding the design of the kneading tank 100, in some embodiments, referring to fig. 1, the kneading tank 100 is vertically disposed, the powder feed port 110 is disposed at the top of the kneading tank 100, the discharge port 121 is disposed at the lower end of the kneading tank 100, and the first and second screw blades 220 and 320 are vertically disposed inside the kneading tank 100; the kneading tank 100 adopts the structure, and the battery slurry can better pass through a kneading piece under the action of gravity; in addition, the battery powder can slide from the powder supply 110 to the initial positions of the first propeller blade 220 and the second propeller blade 320 by the self gravity, and the problem of accumulation of the battery powder is avoided.

In some embodiments, the end of the kneading tank 100 away from the powder supply port 110 is a tapered portion 120, i.e., the lower end of the kneading tank 100, the inner cavity of the tapered portion 120 is a tapered cavity, the discharge port 121 is disposed at the center of the tapered portion 120, and the discharge port 121 communicates with the center of the tapered cavity. Specifically, after the battery slurry is kneaded, the kneaded material is finally conveyed into the tapered cavity, and the discharge opening 121 is arranged at the center of the top of the tapered cavity, so that the battery slurry close to the side wall of the tapered cavity can flow to the discharge opening 121 along the side wall of the tapered cavity, and the battery slurry after being kneaded is prevented from being accumulated at the corner of the end of the kneading tank 100.

In order to achieve the gradual wetting of the powder and the reduction of the agglomerate size of the powder, in some embodiments, the first solvent feed port 130 has a plurality of ports (not shown in the figure), the plurality of first solvent feed ports 130 are separately provided on the sidewall of the kneading tank 100 in the circumferential direction of the kneading tank 100, and at least one first solvent feed port 130 is located at the starting position of the first and second screw blades 220 and 320. Specifically, in the process of kneading the battery slurry, the material is from powder feed inlet 110 to the in-process of bin outlet 121, and in the battery powder was added gradually to the solvent from a plurality of first solvent charge inlets 130 to replace adding a large amount of solvents from a first solvent charge inlet 130, so reduced the cluster size of battery, and then improved the broken cluster of kneading device to the battery slurry, knead the effect.

In some embodiments, during rotation of the drive shaft 210, a climbing rod effect exists between the battery paste and the drive shaft 210 due to the viscous fluid of the battery paste. Based on the above problem, the rotation direction of the second rotating base 600 is opposite to the rotation direction of the driving shaft 210, that is, the second rotating base 600 rotates forward and the driving shaft 210 rotates backward, so that the driving shaft 210 can press down the battery paste, and the pole climbing effect of the battery paste is improved.

In some embodiments, the kneading apparatus further comprises a powder bin 140, the powder bin 140 is vertically disposed right above the kneading tank 100, and a lower port of the powder bin 140 communicates with the powder feed port 110, so that an operator can feed a large amount of battery powder into the powder bin 140 from the top of the powder bin 140, and the battery powder continuously flows into the kneading tank 100 from the lower port of the powder bin 140, thereby achieving continuous feeding in the kneading tank 100.

In some embodiments, the kneading apparatus further includes a screw feeder 150, the screw feeder 150 is horizontally disposed below the kneading tank 100, and the discharge port 121 is connected to a side wall of the screw feeder 150, so that the kneaded battery slurry is conveyed to the screw feeder 150. Thereafter, the kneaded battery paste is conveyed to the next processing station by the screw feeder 150, and the battery paste is subjected to the next processing.

According to the application, disclosed is a battery slurry manufacturing device, referring to fig. 1, comprising the kneading device, a continuous dispersion device 700 and a circulation transfer device 800, wherein the kneading device, the continuous dispersion device 700 and the circulation transfer device 800 are sequentially communicated, so that the kneading device quickly wets, breaks and kneads battery powder to form preliminary battery slurry; the primary battery slurry is conveyed to a continuous dispersing device 700, and the continuous dispersing device 700 further breaks up and shears the battery slurry to ensure the consistency of the dispersion of the battery slurry; the dispersed battery slurry is conveyed to the circulation transfer device 800, and the circulation transfer device 800 stirs and shears the battery slurry, so that the circulation transfer device 800 ensures the consistency of the dispersion of the battery slurry in the transfer tank 810 and ensures the solid content of the slurry.

Specifically, the continuous dispersion apparatus 700 includes a dispersion tank 710, a dispersion member 720, and a third driving member 730, and the dispersion tank 710 is communicated with the discharge port of the screw feeder 150, so that the kneading device can supply the kneaded battery slurry to the dispersion tank 710. Dispersing member 720 sets up in dispersing tank 710, and third driving member 730 fixed mounting is in dispersing tank 710's top, the drive shaft of third driving member 730 and dispersing member 720's axis of rotation fixed connection, so, third driving member 730 drive dispersing member 720 rotates in dispersing tank 710, and pivoted dispersing member 720 breaks group, cuts battery thick liquids to further preparation battery thick liquids.

Further, referring to fig. 12 to 14, the dispersing member 720 is a dispersing plate, the dispersing plate is a blade type dispersing plate or a turbine type dispersing plate, and the linear velocity of the dispersing plate is between 2m/s and 50 m/s; meanwhile, the continuous dispersion device 700 is a small-cavity online dispersion device, the volume of the dispersion tank 710 is 1 liter to 100 liters, and the gap between the outer edge of the dispersion plate 830 and the inner wall of the dispersion tank 710 is 0.5mm to 1000 mm. Therefore, in the process that the dispersing piece 720 rotates in the dispersing tank 710, the battery slurry can be sheared and dispersed in the dispersing tank 710 strongly, uniformly and without dead angles, and the dispersing effect is good.

It should be noted that the third driving member 730 is a motor.

The circulation transfer device 800 includes a transfer tank 810, a dispersing paddle 820, a dispersing plate 830, and a power assembly 840, wherein the transfer tank 810 is in communication with the dispersing tank 710, such that the dispersing tank 710 delivers the agglomerated and sheared battery slurry to the transfer tank 810. The dispersing paddle 820 and the dispersing disc 830 are respectively and independently arranged on the inner side of the transfer tank 810 and are vertically arranged, the power assembly 840 is fixedly arranged at the top of the transfer tank 810, the power assembly 840 is connected with a first rotating central shaft 821 of the dispersing paddle 820, so that the power assembly 840 drives the dispersing paddle 820 to rotate around the first rotating central shaft 821, the first rotating central shaft 821 drives the dispersing paddle 820 to rotate, the rotating dispersing paddle 820 is used for stirring the battery slurry, and the first rotating central shaft 821 is parallel to or coincident with the central shaft of the transfer tank 810; similarly, the power assembly 840 is further connected to the second rotating central shaft 831 of the dispersing plate 830, so that the power assembly 840 drives the second rotating central shaft 831 to rotate, the second rotating central shaft 831 drives the dispersing plate 830 to rotate around the second rotating central shaft 831, the rotating dispersing plate 830 breaks the battery slurry into lumps and shears, and the second rotating central shaft 831 is disposed in parallel on one side of the first rotating central shaft 821.

Further, as shown in fig. 1, a second solvent feed port 811 is provided at an upper portion of a sidewall of the relay tank 810, a solvent is fed into the relay tank 810 from the second solvent feed port 811, and the relay tank 810 feeds the solvent into the dispersion tank 710 so that a sufficient amount of the solvent is contained in the kneaded battery paste to facilitate dispersion of the battery paste by the dispersion member 720.

Specifically, the dispersed battery slurry is conveyed to a transfer tank 810, the rotating dispersion paddle 820 axially and radially stirs the battery slurry, and the battery slurry spirally rotates; meanwhile, the dispersion plate 830 is just located within the rotation trajectory of the battery paste, and thus, the rotating dispersion plate 830 just shears the spirally rotating battery paste. In summary, the dispersing paddle 820 and the dispersing plate 830 work together, so that the battery slurry is stirred and sheared at the same time, and the solid content of the battery slurry and the dispersion consistency of the battery slurry are ensured.

In addition, dispersion paddle 820 has realized the high-speed rotation of battery thick liquids, and battery thick liquids can be fast through dispersion impeller 830 to improve dispersion impeller 830 and to battery thick liquids's dispersion efficiency.

In some embodiments, depending on the dispersion paddle 820, the helical spin of the battery slurry is distributed outside or inside the dispersion paddle 820 during rotation of the dispersion paddle 820. In a specific embodiment, referring to fig. 15, the gap between the outer sidewall of the dispersing paddle 820 and the inner sidewall of the dispersing tank 710 is small, and the battery paste moves inside the dispersing paddle 820, and at this time, the dispersing plate 830 is located inside the dispersing paddle 820, so that the battery paste can be sheared. In another embodiment, referring to fig. 1, the outer side wall of the dispersing paddle 820 and the side wall of the dispersion tank 710 have a sufficiently large gap therebetween, and the battery paste moves outside the dispersing paddle 820, and at this time, the dispersing plate 830 is located outside the dispersing paddle 820 so that the battery paste can be sheared.

Further, the power assembly 840 may be a motor, and the driving shaft 210 of the motor is connected to a gear assembly (not shown), one gear of the gear assembly is connected to the first rotating central shaft 821, and one gear of the gear assembly is connected to the second rotating central shaft 831, so that the motor drives both the first rotating central shaft 821 and the second rotating central shaft 831, and the motor drives the dispersing blades 820 and the dispersing plate 830 to rotate.

Alternatively, the power assembly 840 may employ a plurality of motors, such as three motors, wherein the driving shaft 210 of one motor is connected to the first rotating central shaft 821, such that the motor drives the dispersing blades 820 to rotate; the other two motors are respectively connected to the two second rotating central shafts 831, and the two motors respectively drive the two second rotating central shafts 831 to rotate, thereby driving the corresponding dispersing disks 830 to rotate.

In some embodiments, the transfer tank 810 is sized for capacity. In addition, the dispersion plate 830 is a blade type dispersion plate 830 or a turbine type dispersion plate 830, and the linear velocity of the outer edge of the dispersion plate 830 is m/s-m/s, so that the battery slurry in the transit tank 810 is better dispersed.

In some embodiments, referring to fig. 1, the apparatus for manufacturing battery paste further includes a circulation conveying device 900, the circulation conveying device 900 includes a pump 980, a first pipe 910 and a second pipe 920, and the dispersion tank 710 and the transfer tank 810 each have a feed inlet and a discharge outlet; specifically, the first pipe 910 is connected between the discharge port of the dispersion tank 710 and the feed port of the transfer tank 810, and the pump 980 is connected to the first pipe 910, so that the battery slurry in the dispersion tank 710 can be conveyed to the transfer tank 810 through the first pipe 910 under the action of the pump 980, and the dispersion paddle 820 and the dispersion plate 830 in the transfer tank 810 stir and disperse the battery slurry. The second pipe 920 is connected between the discharge port of the transfer tank 810 and the feed port of the dispersion tank 710, and a pump 980 is connected to the second pipe 920, so that the battery slurry in the transfer tank 810 is conveyed to the dispersion tank 710 through the second pipe 920 under the action of the pump 980, thereby realizing the circulating dispersion of the battery slurry.

The manufacturing equipment of the battery slurry comprises a feeding stage and a circulating stage in the working process. During the feeding stage, the powder and a portion of the solvent are continuously fed into the kneading device, kneaded and dispersed by the kneading device to form a preliminary battery slurry, and the battery slurry is transferred to the continuous dispersion device 700. Meanwhile, the other part of the solvent is continuously added into the circulating transfer device 800 and is added into the continuous dispersing device 700 through the circulating transfer device 800. The battery slurry primarily kneaded by the kneading device is strongly dispersed in the continuous dispersing device 700 together with the solvent added by the circulating transfer device 800, and then the strongly dispersed battery slurry enters the circulating transfer device 800 and is further stirred and dispersed in the circulating transfer device 800; then, the battery slurry is circulated between the circulation relay apparatus 800 and the continuous dispersion apparatus 700, and the number of circulation is not limited until the end of charging. In the charging stage, the flow direction of the solvent charged into the continuous dispersion apparatus 700 through the circulation relay apparatus 800 coincides with the flow direction of the battery paste. In the circulation stage, both the powder feed port and the second solvent feed port 811 are closed, and the battery slurry is circulated more than once between the continuous dispersion device 700 and the circulation relay device 800. Therefore, the solid content of the battery slurry is ensured, and the energy consumption of battery slurry processing equipment is reduced; and the battery slurry adopts a circulating treatment mode, so that the overhigh temperature rise caused by long-time stirring of the slurry in a single device can be avoided, the solid content of the slurry can be improved, the processing efficiency of the slurry is improved, and the use amount of NMP (N-methyl pyrrolidone) in the production of the battery slurry and the energy consumption of coating equipment can be reduced due to the increase of the solid content of the slurry, so that the production cost of the battery can be reduced.

In another embodiment, in place of the above circulation conveying device 900, referring to fig. 16, in some embodiments, the circulation conveying device 900 further includes a pump 980, a three-way valve 970, a third pipeline 930, a fourth pipeline 940, a fifth pipeline 950, and a sixth pipeline 960, the dispersion tank 710 and the transit tank 810 each have a feed inlet and a discharge outlet, and the kneading tank 100 is provided with a return inlet corresponding to the positions of the first propeller blade 220 and the second propeller blade 230. Specifically, a third pipe 930 is connected between the feed inlet of the transfer tank 810 and the discharge outlet of the dispersion tank 710, and a pump 980 is connected to the third pipe 930, so that the battery slurry in the dispersion tank 710 is conveyed to the transfer tank 810 through the third pipe 930, and the dispersion paddle 820 and the dispersion plate 830 in the transfer tank 810 stir and disperse the battery slurry; the three-way valve 970 has a first port 971, a second port 972 and a third port 973, one end of a fourth pipeline 940 is communicated with the discharge hole of the transfer tank 810, the other end of the fourth pipeline 940 is communicated with the first port 971 of the three-way valve 970, a fifth pipeline 950 is connected between the second port 972 of the three-way valve 970 and the feed inlet of the dispersion tank 710, a pump 980 is connected to the fifth pipeline 950, a sixth pipeline 960 is connected between the return port and the third port 973 of the three-way valve 970, and a pump 980 is connected to the sixth pipeline 960. Wherein the second port 972 and the third port 973 are selectively closed, and the pump 980 is used for driving the battery slurry to circulate between the circulation transfer device 800 and the continuous dispersion device 700, or the pump 980 is used for driving the battery slurry to circulate between the circulation transfer device 800, the kneading device and the continuous dispersion device 700 in sequence.

Specifically, the manufacturing equipment of the battery slurry comprises a feeding stage and a circulating stage in the working process. In the charging stage, the powder and part of the solvent are continuously charged into the kneading device, the kneading device performs preliminary wetting, breaking, kneading, dispersing and the like on the battery powder, so as to obtain preliminary battery slurry, and the preliminary battery slurry is conveyed to the dispersing tank 710; synchronously, another part of the solvent is continuously added into the circulating transfer device 800, the second port 972 of the three-way valve 970 is in an open state, the third port 973 is in a closed state, and the solvent in the transfer tank 810 sequentially passes through the fourth pipeline 940 and the fifth pipeline 950 under the action of the corresponding pump 980, so that the solvent in the transfer tank 810 is conveyed to the dispersion tank 710; at this time, the battery paste kneaded by the kneading device is strongly dispersed together with the solvent in the continuous dispersion device 700, and then the strongly dispersed battery paste enters the circulation transfer device 800, and is further stirred and dispersed in the circulation transfer device 800; then, the battery slurry is circulated between the circulation relay apparatus 800 and the continuous dispersion apparatus 700, and the number of circulation is not limited until the end of charging. In addition, the flow direction of the solvent added to the continuous dispersion apparatus 700 through the circulation relay apparatus 800 coincides with the flow direction of the battery paste. In the circulation stage, the second port 972 of the three-way valve 970 is in a closed state, the third port 973 is in an open state, both the powder feed port and the second solvent feed port 811 are closed, and the battery slurry is circulated among the circulation transfer device 800, the kneading device, and the continuous dispersion device 700 in sequence. Thereby ensuring the dispersion consistency of the battery slurry and the solid content of the battery slurry.

It should be noted that, in the process of charging the battery powder, the battery slurry circulates between the dispersion tank 710 and the transfer tank 810 through the third pipeline 930, the fourth pipeline 940 and the fifth pipeline 950, so that the solid content of the battery slurry is ensured, and the energy consumption of the battery slurry processing equipment is reduced; and the battery slurry adopts a circulating treatment mode, so that the overhigh temperature rise caused by long-time stirring of the slurry in a single device can be avoided, the solid content of the slurry can be improved, the processing efficiency of the slurry is improved, and the use amount of NMP (N-methyl pyrrolidone) in the production of the battery slurry and the energy consumption of coating equipment can be reduced due to the increase of the solid content of the slurry, so that the production cost of the battery can be reduced.

After the charging of the battery powder is completed, the second port 972 of the three-way valve 970 is closed, the third port 973 of the three-way valve 970 is opened, the battery slurry in the transfer tank 810 is conveyed into the kneading tank 100 through the fourth pipeline 940 and the sixth pipeline 960, the kneading member rapidly breaks the mass and disperses the battery slurry, and then the kneaded battery slurry is conveyed into the dispersing tank 710 to disperse the battery slurry, so that the battery slurry circulates among the kneading device, the continuous dispersing device 700 and the circulating transfer device 800.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims (10)

1. A kneading apparatus, characterized by comprising:

the kneading tank is provided with a powder feeding port, a discharging port and at least one first solvent feeding port;

at least one first kneading member including a drive shaft provided in the kneading tank and arranged in parallel with an axial direction of the kneading tank, and a first propeller blade fixedly connected to a circumferential surface of the drive shaft;

the second kneading piece comprises a first rotating seat and a second screw blade, the first rotating seat is rotatably connected to one end of the kneading tank, the second screw blade is fixedly connected to the first rotating seat and extends towards one end of the kneading tank far away from the first rotating seat, and the first screw blade and the second screw blade can work in a matched mode to break and knead materials; and

the first driving mechanism is connected with the first rotating shaft and the first rotating seat and is used for driving the first rotating shaft, the first propeller blade and the second propeller blade to rotate in the kneading tank; the first propeller blade and the second propeller blade rotate in opposite directions.

2. The kneading apparatus as recited in claim 1, further comprising:

the second rotating seat is rotatably connected to one end of the kneading tank, the first rotating seat and the first rotating shaft are both rotatably connected to the second rotating seat, and the first driving mechanism is mounted on the second rotating seat;

and the second driving piece is connected with the second rotating seat and used for driving the second rotating seat to rotate, and the rotating central shaft of the second rotating seat is parallel to or coincided with the central shaft of the kneading tank.

3. Kneading device according to claim 2, characterized in that the direction of rotation of the second rotary holder is opposite to the direction of rotation of the drive shaft.

4. The kneading apparatus of claim 1 further comprising a third kneading element structurally identical to the second kneading element for cooperating with the second kneading element.

5. The kneading apparatus according to claim 1, wherein the first driving mechanism comprises a first driving member and a gear assembly connected between the driving shaft of the first driving member and the first and second kneading members, the first driving member simultaneously driving the first and second kneading members to rotate via the gear assembly; alternatively, the first and second electrodes may be,

the first driving mechanism comprises a plurality of first driving pieces, one first driving piece is connected with one first kneading piece or one second kneading piece, and each first driving piece is used for independently driving the first kneading piece or the second kneading piece to rotate.

6. The kneading device according to claim 1, wherein the powder supply port is provided at a starting position of the first screw blade and the second screw blade in correspondence with at least one first solvent supply port, and the discharge port is provided at a trailing position of the first screw blade and the second screw blade in correspondence with each other; the kneading gap between the first propeller blade and the second propeller blade is between 2mm and 500 mm.

7. The kneading apparatus according to claim 1, wherein the kneading tank is disposed vertically, the powder feed port is provided at an upper end portion of the kneading tank, and the discharge port is provided at a lower end portion of the kneading tank; the inner cavity of the lower end part of the kneading tank is a conical cavity, and the discharge port is positioned in the center of the conical cavity.

8. The preparation equipment of battery thick liquids, its characterized in that includes:

the kneading apparatus according to any one of claims 1 to 7, which is used for kneading and dispersing materials to form a battery slurry;

the continuous dispersing device comprises a dispersing tank, a dispersing piece and a third driving piece, wherein the dispersing tank is communicated with the kneading device so as to convey the battery slurry in the kneading device to the dispersing tank, the dispersing piece is arranged in the dispersing tank, and the third driving piece is connected with the dispersing piece and is used for driving the dispersing piece to rotate in the dispersing tank so as to enable the dispersing piece to shear and disperse the kneaded battery slurry; and

the circulating transfer device comprises a transfer tank, a dispersing paddle, a dispersing disc and a power assembly, wherein the transfer tank is communicated with the dispersing tank, the dispersing paddle and the dispersing disc are respectively and independently arranged in the transfer tank, the power assembly is used for driving the dispersing paddle to rotate around a first rotating central shaft so that the dispersing paddle can stir the battery slurry, and the power assembly is also used for driving the dispersing disc to rotate around a second rotating central shaft so that the dispersing disc can disperse and shear the battery slurry; the second rotating central shafts are arranged in parallel at one side of the first rotating central shaft, and the transfer tank is provided with a second solvent feeding port.

9. The apparatus for manufacturing battery paste according to claim 8, wherein a gap between an outer edge of the dispersion member and an inner wall of the dispersion tank is 0.5mm to 1000 mm; the dispersing pieces and/or the dispersing discs are blade type dispersing discs or turbine type dispersing discs, and the linear speed of the outer edges of the dispersing pieces and/or the dispersing discs is 2m/s-50 m/s.

10. The apparatus for manufacturing battery paste according to claim 8, wherein the dispersion tank and the transit tank each have a feed inlet and a discharge outlet; the battery slurry manufacturing equipment further comprises a circulating conveying device, the circulating conveying device comprises a pump, a first pipeline and a second pipeline, the first pipeline is connected between the discharge port of the dispersing tank and the feed port of the transfer tank, the second pipeline is connected between the discharge port of the transfer tank and the feed port of the dispersing tank, and the pump is used for driving the battery slurry to circulate between the dispersing tank and the transfer tank; alternatively, the first and second electrodes may be,

the dispersion tank and the transfer tank are respectively provided with a feed inlet and a discharge outlet, and the kneading tank is provided with a return port corresponding to the starting positions of the first propeller blade and the second propeller blade; the battery slurry manufacturing equipment further comprises a circulating conveying device, wherein the circulating conveying device comprises a pump, a three-way valve, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline, and the three-way valve is provided with a first port, a second port and a third port; the third pipeline is connected between a discharge hole of the dispersion tank and a feed inlet of the transfer tank, the fourth pipeline is connected between a discharge hole of the transfer tank and a first port of the three-way valve, the fifth pipeline is connected between a second port of the three-way valve and a feed inlet of the dispersion tank, and the sixth pipeline is connected between a third port of the three-way valve and the material return hole; the second port and the third port can be selectively closed, and when the third port is closed, the pump is used for driving the battery slurry to circulate between the circulation transfer device and the continuous dispersion device; when the second port is closed, the pump is used for driving the battery slurry to circulate among the circulation transfer device, the kneading device and the continuous dispersion device in sequence.

Images