Coating system, battery production line and slurry supply method

Abstract

The invention relates to the technical field of battery production, in particular to a coating system, a battery production line and a slurry supply method. The coating system comprises a coating assembly and a slurry supply assembly, the slurry supply assembly comprises a stirring machine set, and the stirring machine set comprises at least two stirring machines; the transfer component comprises at least two transfer tanks, and each transfer tank is selectively communicated with the at least two stirring machines; the at least two transfer tanks selectively communicate with a coating assembly of the coating system, and one of the at least two transfer tanks supplies materials to the machine head and the machine tail of the coating assembly at the same time. After the stirrer conveys the slurry to the transfer tank, the slurry is simultaneously supplied to the machine head and the machine tail of the coating assembly through the transfer tank, so that the probability that the whole pole piece is scrapped due to the quality problem of the slurry on one side of the pole piece is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to a coating system, a battery production line and a slurry feeding method. BACKGROUND

[0002] The part provided in this part is only background information related to the present disclosure, which is not necessarily prior art.

[0003] In the production process of the battery, the surface of the pole piece needs to be sprayed with slurry, the machine head and the tail of the coating assembly are used to spray the two surfaces of the pole piece at the same time, and the slurry feeding assembly is used to feed the coating assembly.

[0004] In order to realize the effect of continuous spraying, a stirring machine group and a transfer component are usually used for circulating feeding, wherein the transfer component includes a plurality of transfer tanks, and the quality of the slurry on one side of the pole piece is often problematic, resulting in the entire pole piece being scrapped. SUMMARY

[0005] In view of the above problems, the present application provides a coating system, a battery production line and a slurry feeding method, which solves the problem that the entire pole piece is scrapped due to the quality problem of the slurry on one side of the pole piece.

[0006] The first aspect of the present application provides a coating system, comprising a coating assembly and a slurry feeding assembly, the slurry feeding assembly comprising a stirring machine group, the stirring machine group comprising at least two stirring machines; a transfer component, the transfer component comprising at least two transfer tanks, and each transfer tank being in selective communication with the at least two stirring machines; at least two transfer tanks are in selective communication with the coating assembly of the coating system, and one of the at least two transfer tanks simultaneously feeds the machine head and the tail of the coating assembly.

[0007] The embodiment of the present application realizes selective communication of the at least two transfer tanks with the coating assembly of the coating system, and simultaneously feeds the machine head and the tail of the coating assembly by one of the at least two transfer tanks, so that after the stirring machine group transports the slurry to the transfer tank, the machine head and the tail of the coating assembly are simultaneously fed by the transfer tank, thereby reducing the probability of scrapping the entire pole piece due to the quality problem of the slurry on one side of the pole piece.

[0008] The coating system according to the present application also has the following technical features.

[0009] In some embodiments of the present application, the slurry feeding assembly further comprises a first conveying pipeline, the first conveying pipeline being in communication with the at least two transfer tanks and the machine head, and a first pump body being arranged on the first conveying pipeline.

[0010] The embodiment of the present application can realize the spraying of one surface of the pole piece by setting the first conveying pipeline which is communicated with the at least two transfer tanks and the machine head, and setting the first pump body on the first conveying pipeline.

[0011] In some embodiments of the present application, the slurry supply assembly further comprises a second conveying pipeline which is communicated with the at least two transfer tanks and the machine tail, and the second conveying pipeline is provided with a second pump body.

[0012] The embodiment of the present application can realize the spraying of the other surface of the pole piece by setting the second conveying pipeline which is communicated with the at least two transfer tanks and the machine tail, and setting the second pump body on the second conveying pipeline.

[0013] In some embodiments of the present application, the at least two stirring machines comprise a first stirring machine and a second stirring machine; the at least two transfer tanks comprise a first transfer tank and a second transfer tank; the first stirring machine is selectively communicated with the first transfer tank and the second transfer tank; the second stirring machine is selectively communicated with the first transfer tank and the second transfer tank; and the first stirring machine and the second stirring machine supply the transfer component in turn.

[0014] The embodiment of the present application can realize the first stirring machine and the second stirring machine supplying the first transfer tank and the second transfer tank in turn, and realize the cyclic supply by setting the first stirring machine, the second stirring machine, the first transfer tank and the second transfer tank, and selectively communicating the first stirring machine with the first transfer tank and the second transfer tank, and selectively communicating the second stirring machine with the first transfer tank and the second transfer tank.

[0015] In some embodiments of the present application, the at least two stirring machines further comprise a third stirring machine; the at least two transfer tanks further comprise a third transfer tank and a fourth transfer tank; the third stirring machine, the second stirring machine and the first stirring machine are selectively communicated with the third transfer tank and the fourth transfer tank; and the first stirring machine, the second stirring machine and the third stirring machine supply the first transfer tank, the second transfer tank, the third transfer tank and the fourth transfer tank in turn.

[0016] The embodiment of the present application can realize the first stirring machine, the second stirring machine and the third stirring machine supplying the first transfer tank, the second transfer tank, the third transfer tank and the fourth transfer tank in turn, and can provide the slurry to the machine head and the machine tail in turn through the first transfer tank, the second transfer tank, the third transfer tank and the fourth transfer tank by setting the third stirring machine, the third transfer tank and the fourth transfer tank, and selectively communicating the third stirring machine, the second stirring machine and the first stirring machine with the third transfer tank and the fourth transfer tank; wherein the first stirring machine, the second stirring machine and the third stirring machine supply the first transfer tank, the second transfer tank, the third transfer tank and the fourth transfer tank in turn.

[0017] In some embodiments of the present application, the first transfer tank, the second transfer tank, the third transfer tank and the fourth transfer tank are each provided with a stirring paddle.

[0018] The embodiments of the present application can realize stirring of the slurry in the corresponding transfer tank through the stirring paddle in the tank, so that the slurry is more uniform.

[0019] In some embodiments of the present application, the first transfer tank, the second transfer tank, the third transfer tank and the fourth transfer tank are each provided with a monitoring device for detecting the remaining amount of the slurry.

[0020] The embodiments of the present application can realize detection of the remaining slurry in the corresponding transfer tank through the corresponding monitoring device, so as to realize uninterrupted feeding of the head and the tail.

[0021] The second aspect of the present application proposes a battery production line, which comprises the coating system mentioned in the above embodiments.

[0022] The third aspect of the present application proposes a slurry feeding method, which is realized by using the coating system mentioned above, and the slurry feeding method comprises:

[0023] controlling at least two mixers of the mixer group to provide the slurry to the transfer component in sequence;

[0024] controlling at least two transfer tanks of the transfer component to simultaneously feed the head and the tail of the coating assembly in sequence.

[0025] In some embodiments of the present application, the control of the at least two mixers of the mixer group to provide the slurry to the transfer component in sequence specifically comprises:

[0026] the at least two mixers cyclically feed the at least two transfer tanks of the transfer component in sequence.

[0027] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in

[0029] Figure 1 A schematic structural view of a coating system provided for some embodiments of the present application;

[0030] Figure 2 A schematic structural view of a coating system provided for some embodiments of the present application; Figure 1 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at A;

[0031] Figure 3 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at B; Figure 1 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at C;

[0032] Figure 4 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at D; Figure 1 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at D;

[0033] Figure 5 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at D; Figure 1 A partial enlarged schematic structural view of the coating system shown in FIG. 1 at D;

[0034] Figure 6 A flowchart of a slurry feeding method provided for some embodiments of the present application.

[0035] Reference signs are as follows:

[0036] 100, a coating system;

[0037] 10, a slurry feeding assembly;

[0038] 11, a mixer assembly; 111, a first mixer; 112, a second mixer; 113, a third mixer;

[0039] 12, a transfer component; 121, a first transfer tank; 122, a second transfer tank; 123, a third transfer tank; 124, a fourth transfer tank; 1241, a stirring paddle; 1242, a monitoring device; 125, a first output valve; 126, a second output valve; 127, a third output valve; 128, a fourth output valve;

[0040] 13, a first conveying pipeline; 131, a first pump body; 132, a first regulating valve; 133, a second regulating valve;

[0041] 14, a second conveying pipeline; 141, a second pump body; 142, a third regulating valve; 143, a fourth regulating valve;

[0042] 15, first pipeline; 151, first power pump; 152, first valve;

[0043] 16, second pipeline; 161, second power pump; 162, second valve;

[0044] 17, third pipeline; 171, third power pump; 172, third valve;

[0045] 18, fourth pipeline; 181, fourth valve; 182, fifth valve; 183, sixth valve; 184, fourth power pump;

[0046] 191, first buffer tank; 192, second buffer tank;

[0047] 20, coating assembly; 21, machine head; 22, machine tail. DETAILED DESCRIPTION

[0048] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having," and any variations thereof, as used in the specification and claims and the aforementioned description of the drawings, are intended to cover not exclusive inclusions.

[0050] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0051] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0053] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0054] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0055] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0056] At present, from the development of market situation, the application of battery is more and more extensive. The battery is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0057] The battery related to the embodiments of the present application can be used in electric equipment such as vehicles, ships or aircraft, etc. The battery composed of the battery monomer, battery pack and the like related to the present application can be used.

[0058] The power consumption equipment using the battery as the power supply in the embodiments of the present application can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game machine, an electric car toy, an electric ship toy, an electric plane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0059] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above-described battery and power consumption equipment, but can also be applied to all batteries including a box body and power consumption equipment using the battery.

[0060] During the production of the battery, the surface of the pole piece needs to be sprayed with slurry, the machine head and the machine tail of the coating assembly are used to spray the two surfaces of the pole piece at the same time, and the slurry supply assembly is used to supply the coating assembly with slurry.

[0061] In order to achieve the effect of continuous spraying, a stirring machine set and a transfer component are usually used to circulate the slurry, wherein the transfer component includes a plurality of transfer tanks, and the quality of the slurry on one side of the pole piece is often problematic, resulting in the entire pole piece being scrapped.

[0062] In order to solve this problem, the present application proposes a coating system, which includes a slurry supply assembly, the slurry supply assembly includes a stirring machine set, the stirring machine set includes at least two stirring machines; a transfer component, the transfer component includes at least two transfer tanks, and each transfer tank is in selective communication with at least two stirring machines; at least two transfer tanks are in selective communication with the coating assembly of the coating system, one of the at least two transfer tanks supplies the machine head and the machine tail of the coating assembly with slurry at the same time, after the stirring machine transports the slurry to the transfer tank, the transfer tank supplies the machine head and the machine tail of the coating assembly with slurry at the same time, thereby reducing the probability of the entire pole piece being scrapped due to the quality problem of the slurry on one side of the pole piece.

[0063] The coating system in the embodiments of the present application can be used for spraying slurry, or can be installed in other scenes requiring feeding.

[0064] The structure in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0065] The first aspect of the present application proposes a coating system 100, as shown in Figures 1 to 5As shown, the coating system 100 comprises a coating assembly 20 and a slurry supply assembly 10, the slurry supply assembly 10 comprising a blender set 11 and a transfer component 12, the blender set 11 comprising at least two blenders; the transfer component 12 comprising at least two transfer tanks, and each of the at least two transfer tanks is in selective communication with the at least two blenders; the at least two transfer tanks are in selective communication with the coating assembly 20 of the coating system 100 respectively, and one of the at least two transfer tanks supplies the head 21 and the tail 22 of the coating assembly 20 simultaneously.

[0066] It can be understood that the number of the transfer tanks is usually two or more. The embodiments of the present application do not specifically limit the specific shape and size of the tank body of the transfer tank, and the person skilled in the art can make appropriate adjustments according to the actual situation. For example, the transfer tank can be a cylinder, a cuboid, a cube, an irregular column, etc.; one transfer tank can store one ton of slurry or can store 1000 cubic meters of slurry, etc. In addition, the transfer tank can include a top cover or not.

[0067] It should be noted that the embodiments of the present application set the volume of the at least two transfer tanks to be consistent, so that the slurry sprayed on the pole piece can be conveniently traced back. Of course, the volumes of the transfer tanks can also be different, and the traceability of the slurry can also be achieved.

[0068] In addition, the blender here can realize the production of the slurry. In order to realize the continuous supply of the slurry, the number of the blenders is set to at least two, and the at least two blenders can realize the cyclic supply in turn.

[0069] The embodiments of the present application realize the selective communication of the at least two transfer tanks with the coating assembly 20 of the coating system 100 respectively, and realize the simultaneous supply of one of the at least two transfer tanks to the head 21 and the tail 22 of the coating assembly 20, so that after the blender set 11 transports the slurry to the transfer tank, the transfer tank supplies the head 21 and the tail 22 of the coating assembly 20 simultaneously, thereby reducing the probability of the entire pole piece being scrapped due to the quality problem of the slurry of one side of the pole piece.

[0070] Usually, the blenders supply the head 21 and the tail 22 through different transfer tanks respectively, when it is found that the slurry of a certain blender has a problem, it is difficult to accurately trace back to the pole piece using the batch of slurry, and it is easy to cause the scrapping due to the quality problem of the slurry of one side of the pole piece. In addition, after the spraying is completed, the excess slurry of the head 21 or the tail 22 of the coating assembly 20 also needs to be scrapped when the pole piece is collected or cut.

[0071] In the embodiment of the present application, the at least two mixers and the transfer tank are selectively communicated, so that the slurry can be sequentially provided to the transfer tank by the at least two mixers in a certain order, thereby quickly tracing back to the problematic pole piece, quickly and accurately locating the battery cell using the batch of slurry, and reducing the probability of the problematic defective product flowing into the next process.

[0072] In addition, the embodiment of the present application can reduce the case that the weight difference of the slurry is too large when the slurry is respectively supplied to the head 21 and the tail 22, and reduce the waste of the slurry.

[0073] Optionally, as shown in Figure 1 The slurry supply assembly 10 further includes a first conveying pipeline 13, the first conveying pipeline 13 communicates the at least two transfer tanks and the head 21, and the first conveying pipeline 13 is provided with a first pump body 131.

[0074] The first pump body 131 here is a component capable of providing flow power of the slurry, such as a screw pump, wherein the screw pump is a positive displacement rotor pump, which sucks and discharges liquid by the volume change of the sealed cavity formed by the screw and the liner, and of course, the first pump body 131 here can also adopt other power components.

[0075] The embodiment of the present application can convey the slurry in the at least two transfer tanks to the head 21 through the first conveying pipeline 13 to realize the spraying on one surface of the pole piece by setting the first conveying pipeline 13 communicating the at least two transfer tanks and the head 21, and setting the first pump body 131 on the first conveying pipeline 13.

[0076] Optionally, as shown in Figure 1 The slurry supply assembly 10 further includes a second conveying pipeline 14, the second conveying pipeline 14 communicates the at least two transfer tanks and the tail 22, and the second conveying pipeline 14 is provided with a second pump body 141.

[0077] The second pump body 141 here is a component capable of providing flow power of the slurry, such as a screw pump, wherein the screw pump is a positive displacement rotor pump, which sucks and discharges liquid by the volume change of the sealed cavity formed by the screw and the liner, and of course, the second pump body 141 here can also adopt other power components.

[0078] The embodiment of the present application can convey the slurry in the at least two transfer tanks to the tail 22 through the second conveying pipeline 14 to realize the spraying on the other surface of the pole piece by setting the second conveying pipeline 14 communicating the at least two transfer tanks and the tail 22, and setting the second pump body 141 on the second conveying pipeline 14.

[0079] Optionally, as shown in Figure 1 andFigure 2 As shown, at least two mixers include a first mixer 111 and a second mixer 112; at least two transfer tanks include a first transfer tank 121 and a second transfer tank 122. The first mixer 111 is selectively connected to the first transfer tank 121 and the second transfer tank 122, and the second mixer 112 is selectively connected to the first transfer tank 121 and the second transfer tank 122. The first mixer 111 and the second mixer 112 sequentially feed materials to the transfer component 12.

[0080] The first mixer 111 and the first transfer tank 121 and the second transfer tank 122 are selectively connected. The selective connection between the second mixer 112 and the first transfer tank 121 and the second transfer tank 122 means that only one mixer supplies material to the first transfer tank 121 and the second transfer tank 122 at a time. For example, the first mixer 111 supplies material to the first transfer tank 121 and the second transfer tank 122 first. When the slurry in the first mixer 111 is used up, the second mixer 112 is used to supply material to the first transfer tank 121 and the second transfer tank 122.

[0081] The embodiments of this application, by setting up a first mixer 111, a second mixer 112, a first transfer tank 121, and a second transfer tank 122, and selectively connecting the first mixer 111, the first transfer tank 121, and the second transfer tank 122, and selectively connecting the second mixer 112, the first transfer tank 121, and the second transfer tank 122, can achieve the first mixer 111 and the second mixer 112 to sequentially supply materials to the first transfer tank 121 and the second transfer tank 122, thereby realizing cyclic material supply.

[0082] Optionally, such as Figure 1 and Figure 2 As shown, at least two mixers also include a third mixer 113; at least two transfer tanks also include a third transfer tank 123 and a fourth transfer tank 124, wherein the third mixer 113, the second mixer 112 and the first mixer 111 are selectively connected to the third transfer tank 123 and the fourth transfer tank 124 respectively; wherein the first mixer 111, the second mixer 112 and the third mixer 113 sequentially supply materials to the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124.

[0083] The third mixer 113, the second mixer 112 and the first mixer 111 are selectively communicated with the third transfer tank 123 and the fourth transfer tank 124 respectively, which means that only one of the mixers supplies the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 at a time. For example, the first mixer 111 supplies the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 first, and then the second mixer 112 supplies the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 when the first mixer 111 is empty, and then the third mixer 113 supplies the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 when the second mixer 112 is empty.

[0084] The third mixer 113, the third transfer tank 123 and the fourth transfer tank 124 are provided, and the third mixer 113, the second mixer 112 and the first mixer 111 are selectively communicated with the third transfer tank 123 and the fourth transfer tank 124 respectively, and the first mixer 111, the second mixer 112 and the third mixer 113 supply the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 in turn, so that the first mixer 111, the second mixer 112 and the third mixer 113 supply the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 in turn, and the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 supply the head 21 and the tail 22 in turn.

[0085] Optionally, as shown in Figure 1 and Figure 3 , the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 are each provided with a stirring paddle.

[0086] Correspondingly, in order to realize the rotation of the stirring paddle 1241, a motor or other power member can be used for driving, which is a common structure and will not be described here.

[0087] The third mixer 113, the third transfer tank 123 and the fourth transfer tank 124 are provided, and the third mixer 113, the second mixer 112 and the first mixer 111 are selectively communicated with the third transfer tank 123 and the fourth transfer tank 124 respectively, and the first mixer 111, the second mixer 112 and the third mixer 113 supply the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 in turn, so that the first mixer 111, the second mixer 112 and the third mixer 113 supply the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 in turn, and the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 supply the head 21 and the tail 22 in turn.

[0088] Optionally, as shown in Figure 1 and Figure 3 , the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 are each provided with a stirring paddle.

[0089] The monitoring device 1242 here can be a weight detector or a depth detector, both of which can detect the remaining amount of slurry and timely switch other transfer tanks for feeding to realize uninterrupted feeding.

[0090] The embodiments of the present application can detect the remaining slurry in the corresponding transfer tank through the corresponding monitoring device 1242, thereby realizing uninterrupted feeding of the head 21 and the tail 22.

[0091] The structure of the slurry feeding assembly 10 in the present application will be described in detail below with reference to the accompanying drawings.

[0092] Optionally, the first agitator 111 and the transfer component 12 are provided with a first pipeline 15 and a fourth pipeline 18, the first pipeline 15 and the fourth pipeline 18 are selectively connected, the second agitator 112 and the transfer component 12 are provided with a second pipeline 16 and a fourth pipeline 18, the second pipeline 16 and the fourth pipeline 18 are selectively connected, and the third agitator 113 and the transfer component 12 are provided with a third pipeline 17 and a fourth pipeline 18, the third pipeline 17 and the fourth pipeline 18 are selectively connected, that is, the slurry in the first agitator 111 enters the transfer component 12 through the first pipeline 15 and the fourth pipeline 18, the slurry in the second agitator 112 enters the transfer component 12 through the second pipeline 16 and the fourth pipeline 18, and the slurry in the third agitator 113 enters the transfer component 12 through the third pipeline 17 and the fourth pipeline 18.

[0093] The first pipeline 15 is provided with a first power pump 151 and a first valve 152, the second pipeline 16 is provided with a second power pump 161 and a second valve 162, the third pipeline 17 is provided with a third power pump 171 and a third valve 172, and the fourth pipeline 18 can be connected with the first pipeline 15, the second pipeline 16 and the third pipeline 17, thereby realizing the conveying of the slurry from the agitator set 11 to the transfer component 12.

[0094] Correspondingly, the fourth pipeline 18 is further provided with a fourth valve 181 and a fifth valve 182, wherein the fourth valve 181 and the fifth valve 182 are both arranged on the pipeline between the agitator set 11 and the transfer component 12, the fourth valve 181 is used to control the connection or disconnection of the fourth pipeline 18, and the fifth valve 182 is used to realize the effect of air inlet and increase the amount of gas entering the fourth pipeline 18.

[0095] Optionally, the fourth pipeline 18 is further provided with a sixth valve 183 and a fourth power pump 184, wherein the fourth power pump 184 and the sixth valve 183 are respectively arranged at positions where the slurry cannot flow, that is, the left side of the fourth pipeline 18 in the middle. Figure 1 The remaining slurry in the fourth pipeline 18 can be cleaned by putting a ball and moving the ball.

[0096] Optionally, the slurry supply assembly 10 further comprises a first buffer tank 191 and a second buffer tank 192, wherein the first buffer tank 191 is arranged near the machine head 21, and the second buffer tank 192 is arranged near the machine tail 22, and the slurry in the transfer component 12 flows into the first buffer tank 191 and the second buffer tank 192 respectively to realize spraying of the slurry.

[0097] Optionally, the output end of the first transfer tank 121 is provided with a first output valve 125, the output state of the first transfer tank 121 can be controlled, the output end of the second transfer tank 122 is provided with a second output valve 126, the output state of the second transfer tank 122 can be controlled, the output end of the third transfer tank 123 is provided with a third output valve 127, the output state of the third transfer tank 123 can be controlled, and the output end of the fourth transfer tank 124 is provided with a fourth output valve 128, the output state of the fourth transfer tank 124 can be controlled.

[0098] The output valve here can be a pneumatic control valve, or other control valves can be used to switch the output state of the transfer tank.

[0099] Optionally, the first conveying pipeline 13 is provided with a first adjusting valve 132 and a second adjusting valve 133, wherein the second adjusting valve 133 is arranged at the input end of the first buffer tank 191, and can adjust the speed of the slurry entering the first buffer tank 191, and the first adjusting valve 132 can adjust the connection or disconnection of the first conveying pipeline 13.

[0100] Similarly, the second conveying pipeline 14 is provided with a third adjusting valve 142 and a fourth adjusting valve 143, wherein the fourth adjusting valve 143 is arranged at the input end of the second buffer tank 192, and can adjust the speed of the slurry entering the second buffer tank 192, and the third adjusting valve 142 can adjust the connection or disconnection of the third conveying pipeline.

[0101] It should be noted that since the same transfer tank simultaneously supplies the machine head 21 and the machine tail 22, the scrap amount of the slurry can be reduced, and the slurry at the joint and the slurry at the machine head 21 will not be uneven.

[0102] The slurry supply method will be described in a more specific manner below.

[0103] Assuming that the capacity of the first mixer 111 and the second mixer 112 is 100 cubic meters, and the capacity of each transfer tank is 25 cubic meters, the first mixer 111 delivers the slurry to the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124, and then the second mixer 112 delivers the slurry to the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124.

[0104] The first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 sequentially deliver the slurry to the first buffer tank 191 and the second buffer tank 192, and deliver the slurry to the head 21 and the tail 22 of the coating assembly 20, that is, the first transfer tank 121 delivers the slurry in the tank first, and then the second transfer tank 122 is used for feeding, when the second transfer tank 122 delivers the slurry in the tank, the third transfer tank 123 is used for feeding, and when the third transfer tank 123 delivers the slurry in the tank, the fourth transfer tank 124 is used for feeding.

[0105] It should be emphasized that there is some slurry in the first pipeline 15, the second pipeline 16, the third pipeline 17 and the fourth pipeline 18, and when determining the batch of slurry on the pole piece, the weight of the slurry filling the first pipeline 15, the second pipeline 16, the third pipeline 17 and the fourth pipeline 18 needs to be considered.

[0106] The coating assembly 20 here can be a common device such as a coating machine, which sprays the slurry on both surfaces of the pole piece.

[0107] The two transfer tanks of the slurry supply assembly 10 here are selectively communicated with the coating assembly 20, so that the coating assembly 20 can be sequentially fed by at least two transfer tanks.

[0108] The second aspect of the present application provides a battery production line, which includes the coating system 100 mentioned in the above embodiments.

[0109] The battery production line here includes a plurality of devices, such as winding devices and welding devices, for realizing the flow production of the battery.

[0110] The third aspect of the present application provides a slurry feeding method, as shown in Figure 6 The slurry feeding method is realized by using the coating system 100 mentioned above, and includes the following steps:

[0111] S61, controlling at least two mixers of the mixer group 11 to sequentially provide slurry to the transfer component 12;

[0112] S62, control at least two transfer tanks of the transfer component 12 to supply slurry to the head 21 and the tail 22 of the coating assembly 20 in turn.

[0113] Optionally, the at least two mixers of the mixer assembly 11 supply slurry to the transfer component 12 in turn, specifically including controlling the at least two mixers to supply slurry to the at least two transfer tanks of the transfer component 12 in turn.

[0114] The process of the at least two mixers supplying slurry to the at least two transfer tanks of the transfer component 12 in turn will be described in detail below in combination with the structure of the slurry supply assembly 10.

[0115] When the first transfer tank 121 reaches the predetermined weight, the first mixer 111 is controlled to supply slurry to the second transfer tank 122, and when the second transfer tank 122 reaches the predetermined weight, the first mixer 111 is controlled to supply slurry to the third transfer tank 123, and when the third transfer tank 123 reaches the predetermined weight, the first mixer 111 is controlled to supply slurry to the fourth transfer tank 124.

[0116] Wherein, the first mixer 111 supplies slurry to the first transfer tank 121 by starting the first power pump 151 and the first valve 152, the fourth valve 181, the fifth valve 182 and the input valve of the first transfer tank 121, and the slurry is transported from the first mixer 111 to the first transfer tank 121, and when the first transfer tank 121 reaches the predetermined weight, the input valve of the first transfer tank 121 is disconnected, the input valve of the second transfer tank 122 is started, and the slurry in the first mixer 111 is transported to the second transfer tank 122, and the similar control method is used to transport the slurry in the first mixer 111 to the third transfer tank 123 and the fourth transfer tank 124 in turn.

[0117] Similarly, when the slurry in the first mixer 111 is insufficient, the second mixer 112 supplies slurry to the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 in turn, which facilitates the traceability of the slurry sprayed on the pole piece.

[0118] The first transfer tank 121 supplies slurry to the first buffer tank 191 and the second buffer tank 192 at the same time, and when the slurry in the first transfer tank 121 is insufficient, the second transfer tank 122 supplies slurry to the first buffer tank 191 and the second buffer tank 192 at the same time, and when the slurry in the second transfer tank 122 is insufficient, the third transfer tank 123 supplies slurry to the first buffer tank 191 and the second buffer tank 192 at the same time, and when the slurry in the third transfer tank 123 is insufficient, the fourth transfer tank 124 supplies slurry to the first buffer tank 191 and the second buffer tank 192 at the same time, realizing the use of the four transfer tanks in turn.

[0119] The four transfer tanks are in parallel, and only one is used during spraying, so that the slurry used by the head 21 and tail 22 of the coating assembly 20 is of the same quality, reducing the risk of uneven slurry in the head 21 and tail 22.

[0120] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described.

[0121] The first aspect of the present application provides a coating system 100, which comprises a coating assembly 20 and a slurry supply assembly 10, the slurry supply assembly 10 comprising a mixer set 11, the mixer set 11 comprising at least two mixers; a transfer component 12, the transfer component 12 comprising at least two transfer tanks, and each transfer tank being in selective communication with the at least two mixers; the at least two transfer tanks being in selective communication with the coating assembly 20 of the coating system 100 respectively, and one of the at least two transfer tanks supplying slurry to the head 21 and tail 22 of the coating assembly 20 simultaneously. Further, the slurry supply assembly 10 further comprises a first conveying pipeline 13, the first conveying pipeline 13 being in communication with the at least two transfer tanks and the head 21, and the first conveying pipeline 13 being provided with a first pump body 131. Further, the slurry supply assembly 10 further comprises a second conveying pipeline 14, the second conveying pipeline 14 being in communication with the at least two transfer tanks and the tail 22, and the second conveying pipeline 14 being provided with a second pump body 141. Further, the at least two mixers comprise a first mixer 111 and a second mixer 112; the at least two transfer tanks comprise a first transfer tank 121 and a second transfer tank 122, the first mixer 111 being in selective communication with the first transfer tank 121 and the second transfer tank 122, the second mixer 112 being in selective communication with the first transfer tank 121 and the second transfer tank 122, and the first mixer 111 and the second mixer 112 supplying slurry to the transfer component 12 in sequence. Further, the at least two mixers further comprise a third mixer 113; the at least two transfer tanks further comprise a third transfer tank 123 and a fourth transfer tank 124, the third mixer 113, the second mixer 112 and the first mixer 111 being in selective communication with the third transfer tank 123 and the fourth transfer tank 124 respectively; wherein the first mixer 111, the second mixer 112 and the third mixer 113 supply slurry to the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 in sequence. Further, each of the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 is provided with a stirring slurry. Further, the first transfer tank 121, the second transfer tank 122, the third transfer tank 123 and the fourth transfer tank 124 are respectively provided with monitoring devices 1242 for detecting the remaining amount of slurry.

[0122] The above description is only preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A coating system, comprising a coating assembly and a slurry supply assembly, characterized in that, The slurry supply assembly includes: A mixing unit, wherein the mixing unit comprises at least two mixers; A transfer unit comprising at least two transfer tanks, each of the transfer tanks being selectively connected to the at least two mixers; The at least two transfer tanks are selectively connected to the coating component of the coating system, and one of the at least two transfer tanks simultaneously supplies material to the head and tail of the coating component.

2. The coating system as described in claim 1, characterized in that, The slurry supply assembly also includes: A first conveying pipeline is provided, which connects the at least two transfer tanks and the machine head, and a first pump body is provided on the first conveying pipeline.

3. The coating system as described in claim 1 or 2, characterized in that, The slurry supply assembly also includes: A second conveying pipeline is provided, which connects the at least two transfer tanks and the tail section of the machine, and a second pump body is provided on the second conveying pipeline.

4. The coating system as described in claim 1, characterized in that, The at least two mixers include a first mixer and a second mixer; The at least two transfer tanks include a first transfer tank and a second transfer tank. The first mixer is selectively connected to the first transfer tank and the second transfer tank, and the second mixer is selectively connected to the first transfer tank and the second transfer tank. The first mixer and the second mixer sequentially supply materials to the transfer components.

5. The coating system as described in claim 4, characterized in that, The at least two mixers also include a third mixer; The at least two transfer tanks also include a third transfer tank and a fourth transfer tank, and the third mixer, the second mixer and the first mixer are selectively connected to the third transfer tank and the fourth transfer tank; The first mixer, the second mixer, and the third mixer each sequentially supply materials to the first transfer tank, the second transfer tank, the third transfer tank, and the fourth transfer tank.

6. The coating system as described in claim 5, characterized in that, The first transfer tank, the second transfer tank, the third transfer tank, and the fourth transfer tank are all equipped with a stirring paddle.

7. The coating system as described in claim 5, characterized in that, The first transfer tank, the second transfer tank, the third transfer tank, and the fourth transfer tank are each equipped with a monitoring device to detect the remaining amount of slurry.

8. A battery production line, characterized in that, Includes the coating system as described in any one of claims 1 to 7.

9. A method for feeding slurry, characterized in that, The coating system as described in any one of claims 1 to 7 is used, wherein the slurry feeding method comprises: At least two mixers in the control unit sequentially supply slurry to the intermediate transfer unit; At least two transfer tanks controlling the transfer components sequentially supply material to the head and tail of the coating assembly simultaneously.

10. The slurry feeding method as described in claim 9, characterized in that, The control of at least two mixers in the mixing unit to sequentially supply slurry to the intermediate unit specifically includes: Control at least two mixers to sequentially feed material to at least two transfer tanks of the transfer unit.

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