Coating gasket and coating equipment

Abstract

The utility model relates to the technical field of coating equipment, and provides a coating gasket and coating equipment. The coating gasket comprises a gasket main body, the gasket main body is provided with a first thinning part, and the thickness of the first thinning part is smaller than that of a main body part; the first sub-gasket is arranged on the first thinning part and is detachably connected with the first thinning part; the second sub-gasket is arranged on the gasket body, the second sub-gasket and the first sub-gasket are arranged in a spaced mode in the first direction, a first flow channel is defined between the second sub-gasket and the first sub-gasket and between the second sub-gasket and the gasket body, and the first flow channel is used for coating a to-be-coated body with slurry; wherein the first direction is perpendicular to the outflow direction of the slurry. Through the technical scheme of the invention, the manufacturing cost of the battery pole piece can be reduced, and the production efficiency during optimization adjustment and remodeling in the production process of the battery pole piece is improved.

Description

Technical Field

[0001] The present application relates to the technical field of coating equipment, and in particular to a coating gasket and coating equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Currently, in the battery production process, the battery pole pieces need to be coated with active material layers and insulating layers through coating equipment.

[0004] In the related art, coating equipment is usually provided with a coating gasket, but one coating gasket is only adapted to the coating process requirements of one battery electrode. Different battery electrodes need to have different coating gaskets when coating, resulting in waste of coating gaskets and a longer processing cycle. Utility Model Content

[0005] In view of the above problems, the purpose of this application is to provide a coating gasket and coating, so as to reduce the production cost of battery pole pieces and improve the coating efficiency when the battery pole pieces are changed. This purpose is achieved through the following technical solutions:

[0006] In the first aspect, the present application provides a coating gasket, comprising: a gasket body, the gasket body comprising a main body and a first thinning portion, the thickness of the first thinning portion being less than the thickness of the gasket body; a first sub-gasket, the first sub-gasket is arranged on the first thinning portion and is detachably connected to the first thinning portion; a second sub-gasket, the second sub-gasket is arranged on the gasket body and is spaced apart from the first sub-gasket along a first direction, and a first flow channel is defined between the second sub-gasket, the first sub-gasket and the gasket body, the first flow channel being used to apply slurry to the body to be coated; wherein the first direction is perpendicular to the outflow direction of the slurry.

[0007] In the above technical solution, the first thinning portion and the second sub-gasket are arranged on the gasket body at intervals, the thickness of the first thinning portion is less than the thickness of the main body, the first sub-gasket is arranged on the first thinning portion, and is detachably connected to the first thinning portion, wherein a first flow channel for the slurry to flow is defined between the first sub-gasket and the second sub-gasket and the gasket body, and the slurry can be applied to the body to be coated through the first flow channel. Since the size of the first flow channel required to be set for different battery poles is different, first sub-gaskets of different specifications and sizes can be pre-set to define first flow channels of different sizes between the second sub-gasket and the gasket body. In this way, when making different battery poles, it is not necessary to replace all the coating gaskets. The prepared first sub-gaskets can be replaced as needed to define first flow channels of different sizes, thereby reducing product waste, reducing the production cost of battery poles, and improving the production efficiency of optimization adjustment and changeover during the production of battery poles.

[0008] In addition, the coated gasket provided in this application may also have the following additional technical features:

[0009] In some embodiments of the present application, an edge of the first thinned portion partially protrudes in the second direction to form a first lug, and the first lug is provided with a first connecting hole, and the second direction is perpendicular to the first direction; an edge of the first sub-gasket partially protrudes in the second direction to form a second lug, and the second lug is provided with a second connecting hole connected to the first connecting hole, and the first connecting hole and the second connecting hole are used for a connecting member to pass through so as to connect the first sub-gasket and the gasket body.

[0010] In the above technical solution, by respectively arranging the first lug and the second lug on the first thinning portion and the first gasket, and respectively arranging the first connecting hole and the second connecting hole on the first lug and the second lug, when the first sub-gasket is arranged on the first thinning portion, the first sub-gasket and the first thinning portion can be connected by connecting parts such as bolts. When disassembly is required, the first sub-gasket and the first thinning portion can be separated by only removing the connecting parts, which helps to improve the installation and disassembly efficiency of the first sub-gasket.

[0011] In some embodiments of the present application, a third lug is provided on the side of the first thinning portion facing away from the second sub-gasket, the third lug is provided with a first engraved code, and the first engraved code stores data information of the gasket body; and / or, a fourth lug is provided on the side of the first sub-gasket facing away from the second sub-gasket, the fourth lug is provided with a second engraved code, and the second engraved code stores data information of the first sub-gasket.

[0012] In the above technical solution, a first engraved code is set on the third lug on the first thinning portion. The first engraved code may be a QR code or a bar code. By scanning the first engraved code, it is convenient to query the design parameters, number, usage record, usage status and other data information of the gasket body during the coating production process, and it is convenient for later reuse.

[0013] Similarly, by setting a second engraved code on the fourth lug on the first sub-gasket, the second engraved code can also be a QR code or a barcode. By scanning the second engraved code, the design parameters, number, usage record, usage status and other data information of the first sub-gasket can be queried, so as to quickly query and replace the required first sub-gasket, and facilitate later reuse.

[0014] In some embodiments of the present application, a first stop block is formed on a partially raised side of the first sub-gasket toward the first thinning portion. The first stop block is located on a side of the first sub-gasket close to the second sub-gasket and is used to stop against an edge of the first thinning portion. The thickness of the first stop block is the same as the thickness of the main body.

[0015] In the above technical solution, by providing a first stop block on the side of the first sub-gasket facing the first thinning portion, when installing the first sub-gasket, the first stop block can be first stopped against the edge of the first thinning portion facing the first flow channel to play a role in positioning the first sub-gasket. At this time, the first connecting hole and the second connecting hole are correspondingly connected, which facilitates the connecting part to pass through the first connecting hole and the second connecting hole to connect the first sub-gasket with the first thinning portion, which helps to improve the connection efficiency between the first sub-gasket and the first thinning portion.

[0016] In some embodiments of the present application, a first boss is provided on the side of the first stop block facing the second sub-gasket, the first boss is located on the side of the first stop block away from the main body, and a first chamfer is provided on the side of the first boss away from the gasket body; a second boss is provided on the side of the second sub-gasket facing the first sub-gasket, the second boss is located on the side of the second sub-gasket away from the gasket body, and a second chamfer is provided on the side of the second boss away from the main body.

[0017] In the above technical solution, a first chamfer is provided on the side of the first boss away from the main body, and the inclination angle of the first chamfer can be set according to actual needs. A second chamfer is provided on the side of the second boss away from the main body, and the inclination angle of the second chamfer can also be set according to actual needs. In this way, when the slurry is located in the first flow channel and sprayed at a preset pressure, the slurry can be coated on the body to be coated according to a preset coating width after the first chamfer and the second chamfer, which helps to improve the coating accuracy.

[0018] In some embodiments of the present application, along the thickness direction of the gasket body, the first thinning portion has a first surface and a second surface that are oppositely arranged, and the gasket body has a third surface and a fourth surface that are oppositely arranged; wherein the first surface and the third surface are located on the same side of the thickness direction of the gasket body, and the first surface and the third surface are located in the same plane, the second surface and the fourth surface are located in different planes, and the first sub-gasket is arranged on the second surface.

[0019] In the above technical scheme, the first surface of the first thinning portion and the third surface of the gasket body are located in the same plane. Since the thickness of the first thinning portion is smaller than the thickness of the main body, the second surface of the first thinning portion and the fourth surface of the gasket body are located in different planes. Therefore, when the first sub-gasket is arranged on the first thinning portion, the sum of the thickness of the first sub-gasket and the thickness of the first thinning portion can be the same as the thickness of the main body, so that the slurry can only flow between the first sub-gasket and the second sub-gasket. The structure and principle are relatively simple and easy to implement.

[0020] In some embodiments of the present application, the gasket body is also provided with a second thinning portion, the second thinning portion and the first thinning portion are spaced apart along the first direction, and the thickness of the second thinning portion is less than the thickness of the main body; the second sub-gasket is arranged in the second thinning portion and is detachably connected to the second thinning portion.

[0021] In the above technical solution, the gasket body is provided with a second thinning portion, and the second sub-gasket is detachably connected to the second thinning portion, so that the first flow channels of different sizes can be defined by replacing the first sub-gasket or the second sub-gasket, or replacing the first sub-gasket and the second sub-gasket at the same time, thereby matching the coating process requirements of battery pole pieces of different specifications and sizes, thereby making the product more flexible to use and more adaptable.

[0022] In some embodiments of the present application, a second stop block is formed on a partially protruding side of the second sub-gasket toward the second thinning portion. The second stop block is located on the side of the second sub-gasket away from the gasket body and is used to stop against the edge of the second thinning portion. The thickness of the second stop block is the same as the thickness of the gasket body.

[0023] In the above technical solution, by arranging a second stop block on the side of the second sub-gasket facing the second thinning portion, when installing the second sub-gasket, the second stop block can be first stopped against the edge of the second thinning portion to play a role in positioning the second sub-gasket, facilitating the connection between the second sub-gasket and the second thinning portion, and helping to improve the connection efficiency between the second sub-gasket and the second thinning portion.

[0024] In some embodiments of the present application, the number of the first thinning portions is two, and the two first thinning portions are respectively arranged on opposite sides of the second sub-gasket; the number of the first sub-gaskets is two, and the two first sub-gaskets are respectively arranged on the two first thinning portions, and are respectively detachably connected to the two first thinning portions; wherein, the first flow channel is defined between one of the two first sub-gaskets and the second sub-gasket, and the second flow channel is defined between the other one and the second sub-gasket and the main body.

[0025] In the above technical scheme, two first thinning portions are arranged on the gasket body, and the two first thinning portions are respectively located on the opposite sides of the second sub-gasket, and each first thinning portion is provided with a first sub-gasket. The two first sub-gaskets are respectively defined with a first flow channel and a second flow channel between the second sub-gasket, and the first flow channel and the second flow channel are both used for supplying slurry to be coated on the body to be coated, and since the two first sub-gaskets are respectively detachably connected to the two first thinning portions, first flow channels or second flow channels of different sizes can be defined by replacing first sub-gaskets of different specifications, thereby realizing the coating process requirements of battery pole pieces of different specifications and sizes being met.

[0026] In some embodiments of the present application, the main body, the first thinning portion and the second thinning portion are all provided with a third connecting hole, the first sub-gasket and the second sub-gasket are provided with a fourth connecting hole connected to the third connecting hole, and the third connecting hole and the fourth connecting hole are used for fasteners to pass through so as to install the coating gasket on the coating equipment.

[0027] In the above technical solution, when the coating gasket is in the installation position of the coating equipment, fasteners are used to pass through the third connecting hole and the fourth connecting hole respectively, which not only facilitates the fixed installation of the coating gasket on the coating equipment, but also improves the installation accuracy of the first sub-gasket, the second sub-gasket and the gasket body, and improves the reliability of the connection between the first sub-gasket, the second sub-gasket and the gasket body.

[0028] In a second aspect, the present application provides a coating device, comprising: an upper mold; a lower mold; and a coating gasket as described in any one of the embodiments of the first aspect, wherein the coating gasket is arranged between the upper mold and the lower mold.

[0029] The coating device provided in the present application includes the coating gasket described in any one of the embodiments of the first aspect, and thus has the technical effects of any of the above embodiments, which will not be described in detail herein.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 A schematic diagram of the exploded structure of a coating gasket provided in some embodiments of the present application;

[0033] Figure 2 A schematic diagram of the exploded structure of another coating gasket provided in some embodiments of the present application;

[0034] Figure 3 for Figure 2 The schematic diagram of the assembly structure of the coating gasket shown;

[0035] Figure 4 for Figure 3 The enlarged structural diagram of the middle A part;

[0036] Figure 5 A schematic diagram of the exploded structure of a coating device provided in some embodiments of the present application;

[0037] in, Figures 1 to 3 The direction of the X-axis of the central coordinate system represents the first direction, the direction of the Y-axis represents the second direction, and the direction of the Z-axis represents the thickness direction of the coating gasket.

[0038] The reference numerals are as follows:

[0039] 1000. Coating equipment;

[0040] 100, coating gasket; 200, upper mold; 300, lower mold;

[0041] 10. Gasket body; 20. First sub-gasket; 30. Second sub-gasket;

[0042] 11. First thinning portion; 12. Second thinning portion; 13. Third connecting hole; 14. Main body; 111. First lug; 112. Third lug; 21. Second lug; 22. Fourth lug; 23. First stop block; 231. Boss; 2311. First chamfer; 24. Fourth connecting hole. DETAILED DESCRIPTION

[0043] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0045] 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 "multiple" is more than two, unless otherwise clearly and specifically defined.

[0046] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0049] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0052] During the battery production process, the battery electrodes need to be coated with active material layers and insulating layers through coating equipment.

[0053] In the related art, coating equipment is usually provided with a coating gasket, but one coating gasket is only adapted to the coating process requirements of one battery electrode. Different battery electrodes need to have different coating gaskets when coating, resulting in waste of coating gaskets and a longer processing cycle.

[0054] In order to solve the problem that a coating gasket cannot adapt to the process coating requirements of battery pole pieces of different specifications and sizes, the present application designs a coating gasket. By setting the coating gasket as a split structure, the coating gasket includes a gasket body, a first sub-gasket and a second sub-gasket. The gasket body includes a main body and a first thinning portion. The thickness of the first thinning portion is less than the thickness of the main body. The first sub-gasket is arranged in the first thinning portion and is detachably connected to the first thinning portion through a detachable connection. A first flow channel is defined between the first sub-gasket, the second sub-gasket and the gasket body. The first flow channel is used to apply the slurry to the body to be coated. In this way, when different battery pole pieces need to be coated, the size of the first flow channel can be adjusted by replacing the first sub-gasket, so as to adapt to the coating process requirements of different battery pole pieces. The prepared first sub-gasket can be replaced as needed, which helps to reduce the production cost of the battery pole pieces and improve the production efficiency of optimization adjustment and change of type during the production of the battery pole pieces.

[0055] The coating gasket 100 disclosed in the embodiment of the present application is used to be installed in a coating device, so as to cooperate with an upper mold and a lower mold of the coating device to coat the slurry on the object to be coated.

[0056] See also Figure 1 , Figure 1 A schematic diagram of the decomposed structure of a coating gasket provided for some embodiments of the present application. The embodiment of the present application provides a coating gasket 100, including a gasket body 10, a first sub-gasket 20 and a second sub-gasket 30. Among them, the gasket body 10 includes a main body 14 and a first thinning portion 11, and the thickness of the first thinning portion 11 is less than the thickness of the main body 14; the first sub-gasket 20 is arranged on the first thinning portion 11 and is detachably connected to the first thinning portion 11; the second sub-gasket 30 is arranged on the gasket body 10, and is spaced apart from the first sub-gasket 20 along the first direction, and a first flow channel is defined between the second sub-gasket 30 and the first sub-gasket 20 and the gasket body 10, and the first flow channel is used to apply the slurry to the body to be coated; wherein the first direction is perpendicular to the outflow direction of the slurry.

[0057] Exemplarily, the first thinning portion 11 is formed by milling a groove on a surface in the thickness direction of the end of the gasket body 10. That is, the first thinning portion 11 can be formed by cutting a required groove on a surface in the thickness direction of the end of the gasket body 10 by a specific tool.

[0058] Exemplarily, the second subgasket 30 may be integrally connected to the gasket body 10 , or may be detachably connected to the gasket body 10 .

[0059] Exemplarily, the body to be coated may be a current collector, which may be a copper foil, a nickel foil or an aluminum foil, etc., which has the function of conducting electrons and carrying the slurry.

[0060] By arranging the first thinning portion 11 and the second sub-gasket 30 on the gasket body 10 at intervals, the thickness of the first thinning portion 11 is less than the thickness of the main body 14, and the first sub-gasket 20 is arranged on the first thinning portion 11 and is detachably connected to the first thinning portion 11, wherein a first flow channel for the slurry to flow is defined between the first sub-gasket 20 and the second sub-gasket 30 and the gasket body 10, and the slurry can be applied to the body to be coated through the first flow channel. Since the size of the first flow channel required to be set for different battery poles is different, first sub-gaskets 20 of different specifications and sizes can be pre-arranged to define first flow channels of different sizes between the second sub-gasket 30 and the gasket body 10. In this way, when making different battery poles, it is not necessary to replace all the coating gaskets 100. Only the first sub-gasket 20 needs to be replaced to define first flow channels of different sizes, thereby reducing product waste, reducing the production cost of battery poles, and improving the production efficiency of battery poles.

[0061] For the convenience of explanation, the first direction may be defined as the extending direction of the gasket body 10 .

[0062] See also Figure 2 and Figure 3 , Figure 2 A schematic diagram of the exploded structure of another coating gasket provided in some embodiments of the present application, Figure 3 for Figure 2 The schematic diagram of the assembly structure of the coated gasket shown. According to some embodiments of the present application, the edge of the first thinned portion 11 partially protrudes in the second direction to form a first lug 111, the first lug 111 is provided with a first connection hole, and the second direction is perpendicular to the first direction; the edge of the first sub-gasket 20 partially protrudes in the second direction to form a second lug 21, the second lug 21 is provided with a second connection hole connected to the first connection hole, and the first connection hole and the second connection hole are used for the connection member to pass through, so as to connect the first sub-gasket 20 and the gasket body 10.

[0063] It can be understood that the second direction is the width direction of the gasket body 10, which is parallel to the direction in which the slurry flows out from the first flow channel.

[0064] Exemplarily, the first lug 111 and the second lug 21 are protrusions protruding from one side in the width direction of the gasket body 10 .

[0065] Illustratively, the connecting member may be a bolt or a pin, etc.

[0066] By respectively arranging the first lug 111 and the second lug 21 on the first thinning portion 11 and the first gasket, and respectively arranging the first connecting hole and the second connecting hole on the first lug 111 and the second lug 21, when the first sub-gasket 20 is arranged on the first thinning portion 11, the first sub-gasket 20 and the first thinning portion 11 can be connected by connecting parts such as bolts. When disassembly is required, the first sub-gasket 20 and the first thinning portion 11 can be separated by removing the connecting parts, which helps to improve the installation and disassembly efficiency of the first sub-gasket 20.

[0067] See also Figure 2 According to some embodiments of the present application, a third lug 112 is provided on the side of the first thinning portion 11 facing away from the second sub-gasket 30, and the third lug 112 is provided with a first engraved code, and the first engraved code stores data information of the gasket body 10; and / or, a fourth lug 22 is provided on the side of the first sub-gasket 20 facing away from the second sub-gasket 30, and the fourth lug 22 is provided with a second engraved code, and the second engraved code stores data information of the first sub-gasket 20.

[0068] Exemplarily, the third lug 112 and the fourth lug 22 are staggered.

[0069] Exemplarily, the first engraved code or the second engraved code can be a QR code or a barcode, the first engraved code stores data information such as design parameters, number, usage records and usage status of the gasket body 10, and the second engraved code stores data information such as design parameters, number, usage records and usage status of the first sub-gasket 20.

[0070] By setting a first engraved code on the third lug 112 on the first thinning portion 11 and scanning the first engraved code, it is convenient to query the design parameters, number, usage record, usage status and other data information of the gasket body 10 during the coating production process, and facilitate subsequent reuse.

[0071] Similarly, by setting a second code on the fourth lug 22 on the first sub-gasket 20, the second code can also be a QR code or a bar code. By scanning the second code, it is convenient to query the design parameters, number, usage record, usage status and other data information of the first sub-gasket 20 during the coating production process, so as to quickly query and replace the required first sub-gasket 20, and facilitate later reuse.

[0072] According to some embodiments of the present application, a first stop block 23 is formed on a partially protruding side of the first sub-gasket 20 toward the first thinning portion 11. The first stop block 23 is located on a side of the first sub-gasket 20 close to the second sub-gasket 30 and is used to stop against the edge of the first thinning portion 11. The thickness of the first stop block 23 is the same as the thickness of the main body 14.

[0073] Exemplarily, the first thinning portion 11 has a first connecting plate and a second connecting plate connected to the first connecting plate, the first connecting plate and the second connecting plate have the same thickness, and the extension direction of the first connecting plate is the same as the extension direction of the gasket body 10, the extension direction of the second connecting plate is perpendicular to the extension direction of the first connecting plate, and the second connecting plate and the second sub-gasket 30 both protrude on the same side of the width direction of the gasket body 10.

[0074] Exemplarily, the first sub-gasket 20 also has a first thinned area formed by milling grooves, and the sum of the thickness of the first thinned area and the thickness of the first thinned portion 11 is equal to the thickness of the main body 14. The first stopper 23 is formed on one side of the first thinned area.

[0075] By setting a first stop block 23 on the side of the first sub-gasket 20 facing the first thinning portion 11, when installing the first sub-gasket 20, the first stop block 23 can be first stopped against the edge of the first thinning portion 11 facing the first flow channel to position the first sub-gasket 20. At this time, the first connecting hole and the second connecting hole are correspondingly connected, which facilitates the connecting part to pass through the first connecting hole and the second connecting hole to connect the first sub-gasket 20 with the first thinning portion 11, which helps to improve the connection efficiency between the first sub-gasket 20 and the first thinning portion 11.

[0076] See also Figures 2 to 4 , Figure 4 for Figure 3 Enlarged structural diagram of the middle A portion. According to some embodiments of the present application, a first boss 231 is provided on the side of the first stop block 23 facing the second sub-gasket 30, the first boss 231 is located on the side of the first stop block 23 away from the main body 14, and a first chamfer 2311 is provided on the side of the first boss 231 away from the gasket body 10; a second boss is provided on the side of the second sub-gasket 30 facing the first sub-gasket 20, the second boss is located on the side of the second sub-gasket 30 away from the main body 14, and a second chamfer is provided on the side of the second boss away from the gasket body 10.

[0077] By setting a first chamfer 2311 on the side of the first boss 231 away from the main body 14, the inclination angle of the first chamfer 2311 can be set according to actual needs, and setting a second chamfer on the side of the second boss away from the main body 14, the inclination angle of the second chamfer can also be set according to actual needs. In this way, when the slurry is located in the first flow channel and sprayed at a preset pressure, the slurry can be coated on the body to be coated according to a preset coating width after passing through the first chamfer 2311 and the second chamfer, which helps to improve the coating accuracy.

[0078] According to some embodiments of the present application, along the thickness direction of the gasket body 10, the first thinning portion 11 has a first surface and a second surface that are relatively arranged, and the gasket body 10 has a third surface and a fourth surface that are relatively arranged; wherein the first surface and the third surface are located on the same side of the thickness direction of the gasket body 10, and the first surface and the third surface are located in the same plane, and the second surface and the fourth surface are located in different planes.

[0079] Specifically, the first subgasket 20 is disposed on the second surface.

[0080] The first surface of the first thinning portion 11 and the third surface of the gasket body 10 are located in the same plane. Since the thickness of the first thinning portion 11 is less than the thickness of the main body 14, the second surface of the first thinning portion 11 and the fourth surface of the gasket body 10 are located in different planes. Therefore, when the first sub-gasket 20 is arranged on the first thinning portion 11, the sum of the thickness of the first sub-gasket 20 and the thickness of the first thinning portion 11 can be the same as the thickness of the gasket body 10, so that the slurry can only flow between the first sub-gasket 20 and the second sub-gasket 30. The structure and principle are relatively simple and easy to implement.

[0081] See also Figure 2 and Figure 3 According to some embodiments of the present application, the gasket body 10 is also provided with a second thinning portion 12, the second thinning portion 12 and the first thinning portion 11 are spaced apart along the first direction, and the thickness of the second thinning portion 12 is less than the thickness of the main body 14; the second sub-gasket 30 is provided in the second thinning portion 12 and is detachably connected to the second thinning portion 12.

[0082] Exemplarily, the second thinning portion 12 is formed by milling a groove on one surface of the end of the gasket body 10 in the thickness direction. That is, the second thinning portion 12 can be formed by cutting a required groove on one surface of the end of the gasket body 10 in the thickness direction by a specific tool. The first gasket and the second gasket are respectively arranged on the same side of the second thinning portion 12 and the first thinning portion 11 in the thickness direction of the gasket body 10.

[0083] Exemplarily, a fifth lug is partially protruded from one side of the second thinned portion 12 along the second direction, and the second sub-gasket 30 is provided with a sixth lug corresponding to the fifth lug, and the fifth lug and the sixth lug are detachably connected via a connector.

[0084] Exemplarily, the second sub-gasket 30 also has a second thinned area formed by milling grooves, and the sum of the thickness of the second thinned area and the thickness of the second thinned portion 12 is equal to the thickness of the main body 14. The second stopper 23 is formed on a side of the second thinned area away from the main body 14.

[0085] The gasket body 10 is provided with a second thinning portion 12, and the second sub-gasket 30 is detachably connected to the second thinning portion 12, so that the first sub-gasket 20 or the second sub-gasket 30 can be replaced, or the first sub-gasket 20 and the second sub-gasket 30 can be replaced at the same time to define first flow channels of different sizes, thereby matching the coating process requirements of battery pole pieces of different specifications and sizes, thereby making the product more flexible to use and more adaptable.

[0086] According to some embodiments of the present application, a second stop block is formed on a partially protruding side of the second sub-gasket 30 toward the second thinning portion 12. The second stop block is located on the side of the second sub-gasket 30 away from the gasket body 10 and is used to stop against the edge of the second thinning portion 12. The thickness of the second stop block is the same as the thickness of the gasket body 10.

[0087] By setting a second stop block on the side of the second sub-gasket 30 facing the second thinning portion 12, when installing the second sub-gasket 30, the second stop block can be first stopped against the edge of the second thinning portion 12 to position the second sub-gasket 30, which facilitates the connection between the second sub-gasket 30 and the second thinning portion 12 and helps to improve the connection efficiency between the second sub-gasket 30 and the second thinning portion 12.

[0088] According to some embodiments of the present application, the number of the first thinning portions 11 is two, and the two first thinning portions 11 are respectively arranged on opposite sides of the second sub-gasket 30; the number of the first sub-gaskets 20 is two, and the two first sub-gaskets 20 are respectively arranged on the two first thinning portions 11, and are respectively detachably connected to the two first thinning portions 11; wherein, a first flow channel is defined between one of the two first sub-gaskets 20 and the second sub-gasket 30, and a second flow channel is defined between the other one and the second sub-gasket 30 and the main body 14.

[0089] It can be understood that the second sub-gasket 30 is provided with first bosses 231 on both sides facing the two first sub-gaskets 20 , and each first boss 231 is provided with a second chamfer.

[0090] By arranging two first thinning portions 11 on the gasket body 10, the two first thinning portions 11 are respectively located on the opposite sides of the second sub-gasket 30, and each first thinning portion 11 is provided with a first sub-gasket 20. The two first sub-gaskets 20 are respectively defined with a first flow channel and a second flow channel between the second sub-gasket 30. The first flow channel and the second flow channel are both used for supplying slurry to be coated on the body to be coated. Since the two first sub-gaskets 20 are respectively detachably connected to the two first thinning portions 11, first flow channels or second flow channels of different sizes can be defined by replacing first sub-gaskets 20 of different specifications, thereby achieving the coating process requirements of battery pole pieces of different specifications and sizes.

[0091] In other embodiments, there are more than two first sub-gaskets 20 and more than one second sub-gaskets 30. It is understandable that the specific number of the first sub-gaskets 20 and the second sub-gaskets 30 can be increased or decreased according to the number of coating areas during coating.

[0092] See also Figure 2 According to some embodiments of the present application, the main body 14, the first thinning portion 11 and the second thinning portion 12 are all provided with a third connecting hole 13, and the first sub-gasket 20 and the second sub-gasket 30 are provided with a fourth connecting hole 24 connected to the third connecting hole 13, and the third connecting hole 13 and the fourth connecting hole 24 are used for fasteners to pass through so as to install the coating gasket 100 on the coating equipment.

[0093] When the coating gasket 100 is at the installation position of the coating equipment, fasteners are used to pass through the third connecting hole 13 and the fourth connecting hole 24 respectively, which not only facilitates the fixing and installation of the coating gasket 100 on the coating equipment to improve the installation efficiency, but also improves the installation accuracy of the first sub-gasket 20, the second sub-gasket 30 and the gasket body 10, and improves the reliability of the connection between the first sub-gasket 20, the second sub-gasket 30 and the gasket body 10.

[0094] According to some embodiments of the present application, see Figure 2 and Figure 3 The present application provides a coating gasket 100, comprising a gasket body 10, two first sub-gaskets 20 and a second sub-gasket 30. The gasket body 10 comprises a main body 14, two first thinning portions 11 and a second thinning portion 12, the two first thinning portions 11 are respectively arranged at the two ends of the main body 14, and are located on both sides of the second thinning portion 12, and each first thinning portion 11 is spaced apart from the second thinning portion 12 along the first direction. The thickness of the first thinning portion 11 and the second thinning portion 12 is less than the thickness of the main body 14. The two first sub-gaskets 20 are respectively arranged at the two first thinning portions 11, and are detachably connected to the first thinning portions 11. The second sub-gasket 30 is arranged at the second thinning portion 12, and is detachably connected to the second thinning portion 12. The second sub-gasket 30 defines a first flow channel and a second flow channel between the two first sub-gaskets 20 and the main body 14, and the first flow channel and the second flow channel are used to apply the slurry to the object to be coated; wherein the first direction is perpendicular to the outflow direction of the slurry. Through the technical solution of the present application, the production cost of the battery pole piece can be reduced and the coating efficiency when the battery pole piece is changed can be improved.

[0095] According to some embodiments of this application, see Figure 5 , Figure 5The present application also provides a coating device, comprising an upper die 200, a lower die 300 and a coating gasket 100 of any one of the above embodiments, wherein the coating gasket 100 is disposed between the upper die 200 and the lower die 300.

[0096] The coating device provided in the present application includes the coating gasket 100 described in any one of the embodiments of the first aspect, and thus has the technical effects of any of the above embodiments, which will not be described in detail herein.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A coated gasket, characterized in that: include: A gasket body, the gasket body comprising a main body portion and a first thinned portion, the thickness of the first thinned portion being smaller than the thickness of the main body portion; A first sub-gasket, the first sub-gasket is arranged on the first thinned portion and is detachably connected to the first thinned portion; A second sub-gasket, the second sub-gasket is arranged on the gasket body and is spaced apart from the first sub-gasket along a first direction, and a first flow channel is defined between the second sub-gasket, the first sub-gasket and the gasket body, and the first flow channel is used to apply the slurry to the object to be coated; Wherein, the first direction is perpendicular to the outflow direction of the slurry.

2. The coated gasket according to claim 1, characterized in that: The edge of the first thinned portion partially protrudes in a second direction to form a first lug, the first lug is provided with a first connecting hole, and the second direction is perpendicular to the first direction; The edge of the first subgasket partially protrudes toward the second direction to form a second lug, and the second lug is provided with a second connecting hole connected to the first connecting hole. The first connecting hole and the second connecting hole are used for a connecting member to pass through to connect the first subgasket and the gasket body.

3. The coated gasket according to claim 2, characterized in that: A third lug is provided on a side of the first thinned portion facing away from the second sub-gasket, and the third lug is provided with a first engraved code, and the first engraved code stores data information of the gasket body; And / or, a fourth lug is provided on a side of the first subgasket facing away from the second subgasket, the fourth lug is provided with a second engraved code, and the second engraved code stores data information of the first subgasket.

4. The coated gasket according to any one of claims 1 to 3, characterized in that: A first stop block is formed on a partially raised side of the first sub-gasket toward the first thinning portion. The first stop block is located on a side of the first sub-gasket close to the second sub-gasket and is used to stop against an edge of the first thinning portion. The thickness of the first stop block is the same as the thickness of the main body.

5. The coated gasket according to claim 4, characterized in that: A first boss is provided on a side of the first stop block facing the second sub-gasket, the first boss is located on a side of the first stop block away from the gasket body, and a first chamfer is provided on a side of the first boss away from the main body; A second boss is provided on a side of the second subgasket facing the first subgasket, the second boss is located on a side of the second subgasket away from the main body, and a second chamfer is provided on a side of the second boss away from the main body.

6. The coated gasket according to any one of claims 1 to 3, characterized in that: Along the thickness direction of the gasket body, the first thinned portion has a first surface and a second surface that are oppositely disposed, and the gasket body has a third surface and a fourth surface that are oppositely disposed; The first surface and the third surface are located on the same side of the gasket body in the thickness direction, and the first surface and the third surface are located in the same plane, the second surface and the fourth surface are located in different planes, and the first sub-gasket is arranged on the second surface.

7. The coated gasket according to any one of claims 1 to 3, characterized in that: The gasket body is further provided with a second thinning portion, the second thinning portion and the first thinning portion are spaced apart along the first direction, and the thickness of the second thinning portion is smaller than the thickness of the main body; The second sub-gasket is arranged on the second thinned portion and is detachably connected to the second thinned portion.

8. The coated gasket according to claim 7, characterized in that: The second sub-gasket is partially protruded on one side toward the second thinning portion to form a second stop block, the second stop block is located on the side of the second sub-gasket away from the gasket body, and is used to stop against the edge of the second thinning portion, and the thickness of the second stop block is the same as the thickness of the gasket body.

9. The coated gasket according to any one of claims 1 to 3, characterized in that: The number of the first thinning portions is two, and the two first thinning portions are respectively arranged on two opposite sides of the second sub-gasket; The number of the first sub-gaskets is two, and the two first sub-gaskets are respectively arranged on the two first thinning portions, and are respectively detachably connected to the two first thinning portions; The first flow channel is defined between one of the two first sub-gaskets and the second sub-gasket, and the second flow channel is defined between the other one of the two first sub-gaskets and the second sub-gasket and the main body.

10. The coated gasket according to claim 7, characterized in that: The main body, the first thinning portion and the second thinning portion are all provided with a third connecting hole, the first sub-gasket and the second sub-gasket are provided with a fourth connecting hole connected to the third connecting hole, and the third connecting hole and the fourth connecting hole are used for fasteners to pass through so as to install the coating gasket on the coating equipment.

11. A coating device, characterized in that: include: upper mold; Lower mold; and The coated gasket as described in any one of claims 1-10, wherein the coated gasket is arranged between the upper mold and the lower mold.

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