Coating device and coating machine

Abstract

The utility model provides a coating device and a coating machine, a first coating assembly is arranged on a base, and the first coating assembly is used for coating battery slurry. The second coating assembly is arranged on the base and is spaced from the first coating assembly; the second coating assembly is used for coating ceramic adhesive slurry on the battery pole piece. The transmission assembly is arranged on the base and between the first coating assembly and the second coating assembly, and the transmission assembly is used for transmitting the battery pole piece, so that the battery pole piece is transmitted to the corresponding position of the second coating assembly from the corresponding position of the first coating assembly. After the battery pole piece is coated with the battery slurry through the first coating assembly, the battery slurry on the battery pole piece forms a stable film area due to surface tension and the like, and then the edge of the stable film area is coated with the ceramic adhesive slurry through the second coating assembly, so that the film area structure of the battery slurry is not damaged, the battery slurry and the ceramic adhesive slurry are prevented from being fused, and the stability of the battery is improved. And a stable ceramic adhesive film layer can be formed, so that various properties and preparation yield of the battery pole piece are improved.

Description

Technical Field

[0001] This application relates to the technical field of battery coating, and specifically relates to a coating device and a coater. Background Art

[0002] When the battery electrode sheet undergoes the coating process, it is necessary to coat the ceramic adhesive slurry at the edge position of the battery electrode sheet. The ceramic adhesive on the edge of the battery electrode sheet can protect the electrode sheet from damage during laser slitting or die cutting. However, in the related art, the ceramic adhesive slurry and the lithium-ion battery slurry are simultaneously extruded from the coating die head, which is likely to cause appearance defects; the part where the ceramic adhesive slurry and the lithium-ion battery slurry come into contact is mixed, and the ceramic adhesive slurry is mixed into the lithium-ion slurry coating, resulting in a decrease in energy density; moreover, the lithium-ion battery slurry is mixed into the ceramic adhesive slurry, resulting in a decline in the insulation and protection performance of the ceramic adhesive slurry; in summary, the simultaneous extrusion of the ceramic adhesive slurry and the lithium-ion battery slurry from the coating die head is likely to reduce the various performances and preparation yield of the battery electrode sheet. Summary of the Utility Model

[0003] The purpose of this application is to provide a coating device and a coater to solve the technical problem that the simultaneous extrusion of the ceramic adhesive slurry and the lithium-ion battery slurry from the coating die head is likely to reduce the various performances and preparation yield of the battery electrode sheet.

[0004] In the first aspect, this application provides a coating device, which includes:

[0005] A base;

[0006] A first coating assembly, which is arranged on the base and is used for coating the battery slurry on the battery electrode sheet;

[0007] A second coating assembly, which is arranged on the base and is spaced from the first coating assembly along a first direction, and the second coating assembly is used for coating the ceramic adhesive slurry on the battery electrode sheet; and

[0008] A transmission assembly, which is arranged on the base and between the first coating assembly and the second coating assembly, and the transmission assembly is used for transmitting the battery electrode sheet so that the battery electrode sheet is transmitted from the corresponding position of the first coating assembly to the corresponding position of the second coating assembly.

[0009] In the coating device provided by the present application, the first coating assembly is arranged on the base, and the first coating assembly is used to coat battery slurry on the battery electrode plate. The second coating assembly is arranged on the base and is spaced from the first coating assembly in the first direction. The second coating assembly is used to coat ceramic adhesive slurry on the battery electrode plate. The transmission assembly is arranged on the base and between the first coating assembly and the second coating assembly. The transmission assembly is used to transmit the battery electrode plate so that the battery electrode plate is transmitted from the corresponding position of the first coating assembly to the corresponding position of the second coating assembly. The second coating assembly is spaced from the first coating assembly. When the battery slurry is coated on the battery electrode plate, a stable film area will be formed on the battery slurry on the battery electrode plate due to surface tension and other reasons. Then, the ceramic adhesive slurry is coated on the edge of the stable film area of the battery slurry through the second coating assembly, which not only does not damage the film area structure of the battery slurry and avoids the fusion of the battery slurry and the ceramic adhesive slurry, but also can form a stable ceramic adhesive film layer, which is beneficial to improving the various performances and preparation yield of the battery electrode plate.

[0010] Among them, the distance D between the first coating assembly and the second coating assembly in the first direction satisfies 30 cm ≤ D ≤ 100 cm, and the transmission speed V of the transmission assembly satisfies 3 cm / s ≤ V ≤ 20 cm / s.

[0011] Among them, the second coating assembly includes:

[0012] A fixing frame, the fixing frame is arranged on the base, the fixing frame is arranged in the second direction, and the second direction is perpendicular to the first direction;

[0013] A first dispensing member, the first dispensing member is arranged on the fixing frame, and the first dispensing member is used to coat the ceramic adhesive slurry along the first edge of the battery electrode plate; and

[0014] A second dispensing member, the second dispensing member is spaced along the second direction on the fixing frame, and the second dispensing member is used to coat the ceramic adhesive slurry along the second edge of the battery electrode plate. The second edge of the battery electrode plate is arranged opposite to the first edge of the battery electrode plate in the second direction.

[0015] Among them, the fixing frame includes a sliding rod and a first fixing rod and a second fixing rod that are spaced along the second direction on the base. The sliding rod is arranged in the second direction and is respectively connected to the first fixing rod and the second fixing rod. The first dispensing member and the second dispensing member are both arranged on the sliding rod and are used to move along the sliding rod.

[0016] Among them, the first dispensing member includes a first fixing block and a first dispensing tube. The first dispensing tube is arranged in the first fixing block, and the first fixing block is slidably connected to the sliding rod;

[0017] The second glue - applying member includes a second fixing block and a second glue - applying tube. The second glue - applying tube is disposed within the second fixing block, and the second fixing block is slidably connected to the sliding rod.

[0018] Wherein, the first glue - applying member further includes a first setscrew. The first setscrew is used to pass through the first fixing block and abut against the sliding rod to fix the first fixing block on the sliding rod.

[0019] The second glue - applying member further includes a second setscrew. The second setscrew is used to pass through the second fixing block and abut against the sliding rod to fix the second fixing block on the sliding rod.

[0020] Wherein, the first glue - applying member further includes a first screw pump. The first screw pump is connected to the first glue - applying tube, and the first screw pump is used to control the flow rate of the ceramic glue slurry within the first glue - applying tube.

[0021] The second glue - applying member further includes a second screw pump. The second screw pump is connected to the second glue - applying tube, and the second screw pump is used to control the flow rate of the ceramic glue slurry within the second glue - applying tube.

[0022] Wherein, the number of the first glue - applying members is multiple, the number of the second glue - applying members is multiple, and one first glue - applying member and one second glue - applying member correspond to one battery electrode plate.

[0023] Wherein, the coating device further includes a driving assembly. The driving assembly is connected to the first glue - applying member and the second glue - applying member, and the driving assembly is used to drive at least one of the first glue - applying member and the second glue - applying member to move along the sliding rod.

[0024] In a second aspect, the present application provides a coater. The coater includes a first storage device, a second storage device, and the coating device. The first storage device is connected to the first coating assembly, and the first storage device is used to store battery slurry. The second storage device is connected to the second coating assembly, and the second storage device is used to store the ceramic glue slurry.

[0025] In the coater provided by the present application, a first coating assembly is arranged on a base. The first coating assembly is used for coating battery slurry on a battery electrode sheet. A second coating assembly is arranged on the base and is spaced from the first coating along a first direction. The second coating assembly is used for coating ceramic adhesive slurry on the battery electrode sheet. A transmission assembly is arranged on the base and between the first coating assembly and the second coating assembly. The transmission assembly is used for transmitting the battery electrode sheet so that the battery electrode sheet is transmitted from a position corresponding to the first coating assembly to a position corresponding to the second coating assembly. The second coating assembly is spaced from the first coating assembly. When the battery slurry is coated on the battery electrode sheet, the battery slurry on the battery electrode sheet will form a stable film area due to surface tension and other reasons. Then, the ceramic adhesive slurry is coated on the edge of the stable film area of the battery slurry through the second coating assembly, which not only does not damage the film area structure of the battery slurry and avoids the fusion of the battery slurry and the ceramic adhesive slurry, but also can form a stable ceramic adhesive film layer, which is beneficial to improving various performances and preparation yield of the battery electrode sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a schematic structural diagram of a coating device provided by an embodiment of the present application;

[0028] Figure 2 is a schematic side view structure of a second coating assembly provided by an embodiment of the present application Figure 1 ;

[0029] Figure 3 is a schematic structural diagram of a fixing frame provided by an embodiment of the present application;

[0030] Figure 4 is a schematic side view structure of a second coating assembly provided by an embodiment of the present application Figure 2 ;

[0031] Figure 5 is a schematic rear view structure of a second coating assembly provided by an embodiment of the present application.

[0032] Reference Signs Description:

[0033] Coating device 100, base 10, first coating assembly 20, second coating assembly 30, fixing frame 31, sliding rod 311, first fixing rod 312, second fixing rod 313, first dispensing member 32, first fixing block 321, first dispensing tube 322, first setscrew 323, second dispensing member 33, second fixing block 331, second dispensing tube 332, second setscrew 333, transmission assembly 40, battery electrode plate 50. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] In this specification, for convenience, terms indicating orientation or positional relationship such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are used to describe the positional relationship of the constituent elements with reference to the accompanying drawings. This is only for the convenience of describing this specification and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present disclosure. The positional relationship of the constituent elements changes appropriately according to the direction of the described constituent elements. Therefore, it is not limited to the terms described in this specification, and can be replaced appropriately according to the situation.

[0037] In this specification, unless otherwise clearly defined and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate member, or the internal communication of two elements. For those of ordinary skill in the art, the meanings of the above terms in the present disclosure can be understood according to the situation.

[0038] When the battery electrode is undergoing the coating process, it is necessary to coat the ceramic adhesive paste at the edge position of the battery electrode. The ceramic adhesive on the edge of the battery electrode can protect the electrode from damage during laser slitting or die cutting. However, in the related art, the ceramic adhesive paste and the lithium-ion battery paste are simultaneously extruded from the coating die head, which easily causes appearance defects; the contact part between the ceramic adhesive paste and the lithium-ion battery paste is mixed, and the ceramic adhesive paste is mixed into the lithium-ion paste coating film, resulting in a decrease in energy density; and the lithium-ion battery paste is mixed into the ceramic adhesive paste, resulting in a decrease in the insulation and protection performance of the ceramic adhesive paste. In summary, simultaneously extruding the ceramic adhesive paste and the lithium-ion battery paste from the coating die head easily reduces the various properties and preparation yield of the battery electrode.

[0039] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a coating device provided by an embodiment of the present application. The purpose of the present application is to provide a coating device 100 to solve the technical problem that simultaneously extruding the ceramic adhesive paste and the lithium-ion battery paste from the coating die head easily reduces the various properties and preparation yield of the battery electrode.

[0040] The coating device 100 includes a base 10, a first coating assembly 20, a second coating assembly 30, and a transmission assembly 40. The first coating assembly 20 is disposed on the base 10, and the first coating assembly 20 is used to coat the battery paste on the battery electrode 50. The second coating assembly 30 is disposed on the base 10 and is spaced from the first coating along the first direction X. The second coating assembly 30 is used to coat the ceramic adhesive paste on the battery electrode 50. The transmission assembly 40 is disposed on the base 10 and between the first coating assembly 20 and the second coating assembly 30. The transmission assembly 40 is used to transmit the battery electrode 50 so that the battery electrode 50 is transmitted from the corresponding position of the first coating assembly 20 to the corresponding position of the second coating assembly 30.

[0041] The coating device 100 of the present application includes the base 10, wherein the base 10 is made of a rigid material. Optionally, the material of the base 10 includes, but is not limited to, rigid materials such as metals and high-performance plastics. The present application does not limit this. The base 10 is disposed on a horizontal plane, and the base 10 is parallel to the horizontal plane to improve the coating stability and coating effect of the coating device 100.

[0042] The coating device 100 of the present application further includes the first coating assembly 20, and the first coating assembly 20 is used to coat the ceramic adhesive paste on the battery electrode 50. Optionally, in this embodiment, the coating method of the battery paste includes, but is not limited to, slit extrusion coating, and the first coating assembly 20 includes, but is not limited to, extrusion coating structural members such as extrusion die heads.

[0043] The coating device 100 of the present application further includes the second coating assembly 30, and the second coating assembly 30 is used to coat the ceramic adhesive paste on the edge of the battery electrode sheet 50. Coating the ceramic adhesive paste on the edge of the battery electrode sheet 50 can reduce burrs during laser slitting or die cutting, which is beneficial to reducing the risk of internal short circuit of the battery, and the ceramic adhesive edge can play an insulating role to prevent internal short circuit of the battery.

[0044] The coating device 100 of the present application further includes a transmission assembly 40. The battery electrode sheet 50 is arranged on the transmission assembly 40, and the transmission assembly 40 is used to transmit the battery electrode sheet 50 and transmit the battery electrode sheet 50 from the corresponding position of the first coating assembly 20 to the corresponding position of the second coating assembly 30. It should be noted that in this embodiment, the battery electrode sheet 50 first passes through the first coating assembly 20 and then through the second coating assembly 30. In other words, the battery electrode sheet 50 is first coated with battery paste and then coated with ceramic adhesive paste during the coating process.

[0045] In this embodiment, the transmission assembly 40 includes a plurality of transmission rollers, and the battery electrode sheet 50 is arranged on the transmission rollers for transmission. It should be noted that in this embodiment, the length of the battery electrode sheet 50 along the first direction X is greater than the distance between two adjacent transmission rollers, so that the battery electrode sheet 50 can be transmitted on the transmission assembly 40. Optionally, in other embodiments, the transmission assembly 40 may also include a conveyor belt, and the conveyor belt is used to transmit the battery electrode sheet 50. The present application does not limit this.

[0046] The second coating assembly 30 and the first coating assembly 20 are arranged at intervals along the first direction X. When the battery electrode sheet 50 is coated with battery paste, the battery electrode sheet 50 needs to be transmitted on the transmission device. During the transmission process, due to surface tension, temperature, time, etc. of the battery paste on the battery electrode sheet 50, a stable film area will be formed on the battery paste on the battery electrode sheet 50. After the battery paste on the battery electrode sheet 50 forms a stable film area, the battery electrode sheet 50 then passes through the second coating assembly 30, and the ceramic adhesive paste is coated on the stable film area of the battery paste on the battery electrode sheet 50. At this time, the ceramic adhesive paste and the battery paste will not be overly mixed, ensuring the energy density of the battery paste; and the ceramic adhesive paste will not be mixed into the battery paste, which is beneficial to improving the insulation and protection performance of the ceramic adhesive paste. Setting the first coating assembly 20 and the second coating assembly 30 and coating the ceramic adhesive paste and the battery paste separately can also avoid problems such as defects in the appearance of the battery electrode sheet 50, which is beneficial to improving various performances and preparation yield of the battery electrode sheet 50.

[0047] In the coating device 100 provided by the present application, the first coating assembly 20 is disposed on the base 10, and the first coating assembly 20 is used for coating battery paste on the battery electrode sheet 50. The second coating assembly 30 is disposed on the base 10 and is spaced from the first coating along the first direction X. The second coating assembly 30 is used for coating ceramic adhesive paste on the battery electrode sheet 50. The transmission assembly 40 is disposed on the base 10 and between the first coating assembly 20 and the second coating assembly 30. The transmission assembly 40 is used for transmitting the battery electrode sheet 50 so that the battery electrode sheet 50 is transmitted from the corresponding position of the first coating assembly 20 to the corresponding position of the second coating assembly 30. The second coating assembly 30 is spaced from the first coating assembly 20. When the battery paste is coated on the battery electrode sheet 50, a stable film area will be formed on the battery paste on the battery electrode sheet 50 due to surface tension and other reasons. Then, the ceramic adhesive paste is coated on the edge of the stable film area of the battery paste through the second coating assembly 30, which neither destroys the film area structure of the battery paste and avoids the fusion of the battery paste and the ceramic adhesive paste, nor can form a stable ceramic adhesive film layer, which is beneficial to improving the various performances and preparation yield of the battery electrode sheet 50.

[0048] It should be noted that if the distance D between the first coating assembly 20 and the second coating assembly 30 along the first direction X is greater than 100 cm, it may cause the viscosity of the battery paste on the battery electrode sheet 50 to be relatively low, and the ceramic adhesive paste cannot effectively adhere to the battery paste; if the distance D between the first coating assembly 20 and the second coating assembly 30 along the first direction X is less than 30 cm, it may cause the battery paste on the battery electrode sheet 50 not to form a stable film area.

[0049] Therefore, in this embodiment, the distance D between the first coating assembly 20 and the second coating assembly 30 along the first direction X satisfies: 30 cm ≤ D ≤ 100 cm, which can not only ensure that the viscosity of the ceramic paste is not relatively low, but also ensure that the battery paste on the battery electrode sheet 50 can form a stable film area. Optionally, the distance D between the first coating assembly 20 and the second coating assembly 30 along the first direction X can be 30 cm, or 35 cm, or 40 cm, or 45 cm, or 50 cm, or 55 cm, or 60 cm, or 65 cm, or 70 cm, or 75 cm, or 80 cm, or 85 cm, or 90 cm, or 95 cm, or 100 cm, or other values within 30 cm - 100 cm. The present application does not limit this.

[0050] It should be noted that if the transmission speed V of the transmission component 40 is less than 3 cm / s, it may cause the viscosity of the battery slurry on the battery electrode sheet 50 to be relatively low, and the ceramic adhesive slurry cannot effectively adhere to the battery slurry; if the transmission speed V of the transmission component 40 is greater than 20 cm / s, it may cause the battery slurry on the battery electrode sheet 50 not to form a stable film area.

[0051] Therefore, in this embodiment, the transmission speed V of the transmission component 40 satisfies 3 cm / s ≤ V ≤ 20 cm / s, which can not only ensure that the viscosity of the ceramic slurry is not too low, but also ensure that the battery slurry on the battery electrode sheet 50 can form a stable film area. Optionally, the transmission speed V of the transmission component 40 can be 3 cm / s, or 4 cm / s, or 5 cm / s, or 6 cm / s, or 7 cm / s, or 8 cm / s, or 9 cm / s, or 10 cm / s, or 11 cm / s, or 12 cm / s, or 13 cm / s, or 14 cm / s, or 15 cm / s, or 16 cm / s, or 17 cm / s, or 18 cm / s, or 19 cm / s, or 20 cm / s, or other values within 3 cm / s - 20 cm / s, and the present application does not limit this.

[0052] It should be noted that if the time interval t between the time when the battery electrode sheet 50 is coated with the battery slurry and the time when the battery electrode sheet 50 is coated with the ceramic adhesive slurry is greater than 10 s, it may cause the viscosity of the battery slurry on the battery electrode sheet 50 to be relatively low, and the ceramic adhesive slurry cannot effectively adhere to the battery slurry; if the time interval t between the time when the battery electrode sheet 50 is coated with the battery slurry and the time when the battery electrode sheet 50 is coated with the ceramic adhesive slurry is less than 5 s, it may cause the battery slurry on the battery electrode sheet 50 not to form a stable film area.

[0053] Therefore, in this embodiment, the time interval t between the time when the battery electrode sheet 50 is coated with the battery slurry and the time when the battery electrode sheet 50 is coated with the ceramic adhesive slurry satisfies: 5 s ≤ t ≤ 10 s, which can not only ensure that the viscosity of the ceramic slurry is not too low, but also ensure that the battery slurry on the battery electrode sheet 50 can form a stable film area. Optionally, the time interval t between the time when the battery electrode sheet 50 is coated with the battery slurry and the time when the battery electrode sheet 50 is coated with the ceramic adhesive slurry can be 5 s, or 6 s, or 7 s, or 8 s, or 9 s, or 10 s, or other times within 5 s - 10 s, and the present application does not limit this.

[0054] It should be noted that in other embodiments, the range of the spacing D between the first coating assembly 20 and the second coating assembly 30 along the first direction X, the range of the transmission speed V of the transmission assembly 40, the time for the battery electrode 50 to be coated with the battery paste, and the time interval t between the time when the battery electrode 50 is coated with the ceramic adhesive paste can also be adjusted according to the coating thickness of the battery paste required on the battery electrode 50, and should not be construed as a limitation to this application.

[0055] Please refer to Figure 2 , Figure 2 which is a schematic side structure of a second coating assembly provided by an embodiment of this application. Figure 1 . In one embodiment, the second coating assembly 30 includes a fixing frame 31, a first dispensing member 32, and a second dispensing member 33. The fixing frame 31 is disposed on the base 10, the fixing frame 31 is arranged along the second direction Y, and the second direction Y is perpendicular to the first direction X. The first dispensing member 32 is disposed on the fixing frame 31, and the first dispensing member 32 is used to coat the ceramic adhesive paste along the first edge of the battery electrode 50. The second dispensing member 33 is spaced along the second direction Y on the fixing frame 31, and the second dispensing member 33 is used to coat the ceramic adhesive paste along the second edge of the battery electrode 50, and the second edge of the battery electrode 50 is arranged opposite to the first edge of the battery electrode 50 along the second direction Y.

[0056] Optionally, in this embodiment, the number of the first dispensing members 32 is one, the number of the second dispensing members 33 is one, and one first dispensing member 32 and one second dispensing member 33 respectively correspond to the first edge and the second edge of one battery electrode 50. In other embodiments, the number of the first dispensing members 32 can also be multiple, the number of the second dispensing members 33 can be multiple, and one first dispensing member 32 and one second dispensing member 33 correspond to one battery electrode 50. For example, the number of the first dispensing members 32 can be 2, the number of the second dispensing members 33 can be 2, and the number of the battery electrodes 50 is also 2. And the two first dispensing members 32 respectively correspond to the first edges of the two battery electrodes 50, and the two second dispensing members 33 respectively correspond to the second edges of the two battery electrodes 50. In other words, one first dispensing member 32 and one second dispensing member 33 form a pair of dispensing members, and a pair of dispensing members corresponds to one battery electrode 50. The number of pairs of the dispensing members corresponds to the number of the battery electrodes 50. This application does not limit the number of the first dispensing members 32 and the number of the second dispensing members 33, and should not be construed as a limitation to this application.

[0057] Please refer toFigure 2 and Figure 3 , Figure 3 Figure 3 is a schematic structural view of a fixing bracket provided by an embodiment of the present application. In one embodiment, the fixing bracket 31 includes a sliding rod 311, a first fixing rod 312 and a second fixing rod 313 that are arranged on the base 10 at intervals along the second direction Y. The sliding rod 311 is arranged along the second direction Y and is respectively connected to the first fixing rod 312 and the second fixing rod 313. The first dispensing member 32 and the second dispensing member 33 are both arranged on the sliding rod 311 and are used to move along the sliding rod 311.

[0058] The first fixing rod 312 and the second fixing rod 313 are arranged on the base 10 and are fixedly connected to the base 10. Optionally, the manner in which the first fixing rod 312 and the second fixing rod 313 are fixedly connected to the base 10 includes, but is not limited to, threaded connection or other fixing means.

[0059] The sliding rod 311 is arranged at one end of the first fixing rod 312 and the second fixing rod 313 away from the base, and the sliding rod 311 is respectively connected to the first fixing rod 312 and the second fixing rod 313. The first dispensing member 32 and the second dispensing member 33 are both arranged on the sliding rod 311 and are used to move along the sliding rod 311, so that the first dispensing member 32 and the second dispensing member 33 can move according to different specifications and models of the battery electrode plate 50 to align with the first edge and the second edge of the battery electrode plate 50, and apply ceramic glue slurry corresponding to the first edge and the second edge of the battery electrode plate 50, so that the coating device 100 can meet the coating requirements of battery electrode plates 50 of multiple models and sizes, and improve the functionality and practicality of the coating device 100.

[0060] Please refer to Figure 2 , Figure 4 and Figure 5 , Figure 4 Figure 4 is a schematic side view of a second coating assembly provided by an embodiment of the present application Figure 2 , Figure 5 Figure 5 is a schematic rear view of a second coating assembly provided by an embodiment of the present application. In one embodiment, the first dispensing member 32 includes a first fixing block 321 and a first dispensing tube 322. The first dispensing tube 322 is arranged inside the first fixing block 321, and the first fixing block 321 is slidably connected to the sliding rod 311.

[0061] The second dispensing member 33 includes a second fixing block 331 and a second dispensing tube 332. The second dispensing tube 332 is arranged inside the second fixing block 331, and the second fixing block 331 is slidably connected to the sliding rod 311.

[0062] It should be noted that, in this embodiment, the first coating assembly 20 is arranged on the side of the first fixed block 321 away from the first dispensing tube 322. Similarly, the first coating assembly 20 is arranged on the side of the second fixed block 331 away from the second dispensing tube 332, so that when the battery electrode 50 moves from the first coating assembly 20 to the second coating assembly 30, even if the battery electrode 50 slightly interferes with the first dispensing tube 322 and the second dispensing tube 332, it will not affect the movement of the battery electrode 50 or the coating operation of the first dispensing tube 322 and the second dispensing tube 332. In other words, please refer to Figure 2 , the moving direction of the battery electrode 50 is along the first direction X. Optionally, in other embodiments, the first coating assembly 20 may also be disposed on a side of the first dispensing tube 322 away from the first fixing block 321 , and the present application does not limit this.

[0063] Please refer to Figure 2 , Figure 4 and Figure 5 In one embodiment, the first dispensing member 32 further includes a first top screw 323 , and the first top screw 323 is used to penetrate the first fixing block 321 and abut against the sliding rod 311 to fix the first fixing block 321 on the sliding rod 311 .

[0064] The second dispensing member 33 further includes a second top screw 333 , which is used to penetrate the second fixing block 331 and abut against the sliding rod 311 , so as to fix the second fixing block 331 on the sliding rod 311 .

[0065] In this embodiment, the first top screw 323 is a screw member, and the first fixing block 321 is provided with a penetrating internal thread structure, the first top screw 323 penetrates the internal thread structure of the first fixing block 321 and is threadedly connected, the first fixing block 321 is used to abut the sliding rod 311, and limit and lock the first fixing block 321 on the sliding rod 311 to prevent the first fixing block 321 from moving or rotating relative to the sliding rod 311.

[0066] In this embodiment, the second top screw 333 is a screw member, and the second fixing block 331 is provided with a penetrating internal thread structure. The second top screw 333 penetrates the internal thread structure of the second fixing block 331 and is threadedly connected. The second fixing block 331 is used to abut the sliding rod 311 and limit and lock the second fixing block 331 on the sliding rod 311 to prevent the second fixing block 331 from moving or rotating relative to the sliding rod 311.

[0067] In one embodiment, the first dispensing member 32 further includes a first screw pump (not shown), the first screw pump is connected to the first dispensing tube 322, and the first screw pump is used to control the flow rate of the ceramic adhesive slurry in the first dispensing tube 322. The first screw pump can stably push the ceramic adhesive slurry so that the ceramic adhesive slurry on the first edge of the battery electrode sheet 50 forms a stable coating width and coating thickness.

[0068] The second dispensing member 33 further includes a second screw pump, the second screw pump is connected to the second dispensing tube 332, and the second screw pump is used to control the flow rate of the ceramic adhesive slurry in the second dispensing tube 332. The second screw pump can stably push the ceramic adhesive slurry so that the ceramic adhesive slurry on the second edge of the battery electrode sheet 50 forms a stable coating width and coating thickness.

[0069] In one embodiment, the coating device 100 further includes a driving assembly (not shown), the driving assembly is connected to the first dispensing member 32 and the second dispensing member 33, and the driving assembly is used to drive at least one of the first dispensing member 32 and the second dispensing member 33 to move along the sliding rod 311.

[0070] The driving assembly is used to drive at least one of the first dispensing member 32 and the second dispensing member 33 to reciprocate along the second direction Y, so that the first dispensing member 32 and the second dispensing member 33 can move according to different specifications and models of the battery electrode sheet 50 to align the first edge and the second edge of the battery electrode sheet 50, and coat the ceramic adhesive slurry corresponding to the first edge and the second edge of the battery electrode sheet 50, so that the coating device 100 can meet the coating requirements of battery electrode sheets 50 of multiple models and sizes, and improve the functionality and practicality of the coating device 100.

[0071] The present application also provides a coater, the coater includes a first storage device, a second storage device and the coating device 100, the first storage device is connected to the first coating assembly 20, and the first storage device is used to store the battery slurry, the second storage device is connected to the second coating assembly 30, and the second storage device is used to store the ceramic adhesive slurry.

[0072] In the coater provided by the present application, the first coating assembly 20 is disposed on the base 10, and the first coating assembly 20 is used to coat battery paste on the battery electrode plate 50. The second coating assembly 30 is disposed on the base 10 and is spaced from the first coating assembly along the first direction X. The second coating assembly 30 is used to coat ceramic adhesive paste on the battery electrode plate 50. The transmission assembly 40 is disposed on the base 10 and between the first coating assembly 20 and the second coating assembly 30. The transmission assembly 40 is used to transmit the battery electrode plate 50 so that the battery electrode plate 50 is transmitted from the corresponding position of the first coating assembly 20 to the corresponding position of the second coating assembly 30. The second coating assembly 30 is spaced from the first coating assembly 20. When the battery paste is coated on the battery electrode plate 50, a stable film area will be formed on the battery paste due to surface tension and other reasons. Then, the ceramic adhesive paste is coated on the edge of the stable film area of the battery paste through the second coating assembly 30, which not only does not damage the film area structure of the battery paste, avoids the fusion of the battery paste and the ceramic adhesive paste, but also can form a stable ceramic adhesive film layer, which is beneficial to improving the various performances and preparation yield of the battery electrode plate 50.

[0073] In the present application, the mention of "embodiment" or "embodiment mode" means that the specific features, structures or characteristics described in combination with the embodiment may be included in at least one embodiment of the present application. The appearance of the above phrases in various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in each embodiment of the present application can be combined arbitrarily without contradiction to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application.

[0074] The above are some embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. A coating device, characterized in that, The coating device includes: a base; a first coating assembly, which is arranged on the base and is used for coating battery slurry on the battery electrode plate; a second coating assembly, which is arranged on the base and is spaced from the first coating assembly in a first direction, and the second coating assembly is used for coating ceramic glue slurry on the battery electrode plate; and a transmission assembly, which is arranged on the base and between the first coating assembly and the second coating assembly, and the transmission assembly is used for transmitting the battery electrode plate so that the battery electrode plate is transmitted from the corresponding position of the first coating assembly to the corresponding position of the second coating assembly.

2. The coating device according to claim 1, wherein The distance D between the first coating assembly and the second coating assembly in the first direction satisfies 30 cm ≤ D ≤ 100 cm, and the transmission speed V of the transmission assembly satisfies 3 cm / s ≤ V ≤ 20 cm / s.

3. The coating device according to claim 1, characterized in that, The second coating assembly includes: a fixing frame, which is arranged on the base and is arranged in a second direction perpendicular to the first direction; a first glue dispensing member, which is arranged on the fixing frame and is used for coating the ceramic glue slurry along the first edge of the battery electrode plate; and a second glue dispensing member, which is spaced along the second direction on the fixing frame and is used for coating the ceramic glue slurry along the second edge of the battery electrode plate, and the second edge of the battery electrode plate is arranged opposite to the first edge of the battery electrode plate in the second direction.

4. The coating device according to claim 3, characterized in that, The fixing frame includes a sliding rod, a first fixing rod and a second fixing rod which are arranged on the base at intervals along the second direction. The sliding rod is arranged in the second direction and is respectively connected to the first fixing rod and the second fixing rod. The first glue dispensing member and the second glue dispensing member are both arranged on the sliding rod and are used for moving along the sliding rod.

5. The coating device according to claim 4, characterized in that, The first glue dispensing member includes a first fixing block and a first glue dispensing tube. The first glue dispensing tube is arranged in the first fixing block, and the first fixing block is slidably connected to the sliding rod; The second glue dispensing member includes a second fixing block and a second glue dispensing tube. The second glue dispensing tube is arranged in the second fixing block, and the second fixing block is slidably connected to the sliding rod.

6. The coating device according to claim 5, characterized in that, The first glue dispensing member further includes a first setscrew, which is used for passing through the first fixing block and abutting against the sliding rod to fix the first fixing block on the sliding rod; The second glue dispensing member further includes a second setscrew, which is used for passing through the second fixing block and abutting against the sliding rod to fix the second fixing block on the sliding rod.

7. The coating device according to claim 5, characterized in that, The first glue dispensing member further includes a first screw pump, which is communicated with the first glue dispensing tube, and the first screw pump is used for controlling the flow rate of the ceramic glue slurry in the first glue dispensing tube; The second glue dispensing member further includes a second screw pump, which is communicated with the second glue dispensing tube, and the second screw pump is used for controlling the flow rate of the ceramic glue slurry in the second glue dispensing tube.

8. The coating device according to claim 3, characterized in that, The number of the first glue dispensing members is multiple, the number of the second glue dispensing members is multiple, and one first glue dispensing member and one second glue dispensing member correspond to one battery electrode plate.

9. The coating device according to claim 4, wherein, The coating device further includes a driving assembly, the driving assembly is connected to the first glue dispensing member and the second glue dispensing member, and the driving assembly is configured to drive at least one of the first glue dispensing member and the second glue dispensing member to move along the sliding rod.

10. A coater, characterized in that, The coater includes a first storage device, a second storage device, and the coating device according to any one of claims 1-9. The first storage device is communicated with the first coating assembly, and the first storage device is used for storing battery slurry. The second storage device is communicated with the second coating assembly, and the second storage device is used for storing the ceramic glue slurry.

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