Fixing mechanism, coating device and battery production equipment

Abstract

The utility model discloses a fixing mechanism, a coating device and battery production equipment, the fixing mechanism comprises a first clamping part, a second clamping part, an elastic piece and a locking assembly, the second clamping part is arranged on one side, in the thickness direction of the fixing mechanism, of the first clamping part, and a clamping cavity is formed between the second clamping part and the first clamping part; the first clamping part has the moving freedom degree in the thickness direction relative to the second clamping part. The elastic piece is clamped between the first clamping part and the second clamping part and can generate elastic deformation in the thickness direction; the locking assembly is located on the side, away from the second clamping part, of the first clamping part and connected with the second clamping part, the locking assembly comprises an eccentric cam handle, and the eccentric cam handle has rotational freedom and is configured to be capable of driving the first clamping part and the second clamping part to move relatively through rotation; therefore, switching between a locking state and a loosening state is realized. According to the fixing mechanism, the clamped part is convenient to replace, and the processing efficiency of the battery monomers can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a fixing mechanism, a coating device and a battery production equipment. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, such as in mobile phones, laptops, electric vehicles, electric cars, electric ships, electric toy cars, electric toy ships, electric toy planes and electric tools, etc. Coating is an indispensable process in the battery production process and is also a key process that directly affects the battery's performance, such as quantity and life.

[0003] The development of battery technology must take into account multiple design factors at the same time. For example, how to improve processing efficiency during the coating process is an important research direction in the battery field. Utility Model Content

[0004] The present application provides a fixing mechanism, a coating device and a battery production equipment, which can improve processing efficiency.

[0005] In the first aspect, the present application provides a fixing mechanism for fixing a scraper, comprising a first clamping portion, a second clamping portion, an elastic member and a locking assembly, wherein the second clamping portion is arranged on one side of the first clamping portion in the thickness direction of the fixing mechanism, a clamping cavity for accommodating the scraper is formed between the first clamping portion and the second clamping portion, and the first clamping portion has a degree of freedom of movement in the thickness direction relative to the second clamping portion; the elastic member is at least partially clamped between the first clamping portion and the second clamping portion, and can produce elastic deformation in the thickness direction; the locking assembly is at least partially located on the side of the first clamping portion away from the second clamping portion and is connected to the second clamping portion, the locking assembly comprises an eccentric cam handle, the eccentric cam handle has a degree of freedom of rotation in a plane parallel to the thickness direction, and the eccentric cam handle is configured to be able to drive the first clamping portion and the second clamping portion to move relative to each other by rotation so as to switch between a locked state and a relaxed state.

[0006] In the technical solution of the embodiment of the present application, a clamping cavity for clamping a fixed scraper is formed by stacking a first clamping portion and a second clamping portion in the thickness direction, and the first clamping portion and the second clamping portion can move relative to each other in the thickness direction through an elastic member. A locking assembly including an eccentric cam handle is provided on the side of the first clamping portion away from the second clamping portion. On the basis of the connection between the handle and the second clamping portion, the first clamping portion can be driven to move in the thickness direction through the rotation of the eccentric cam handle and the elastic deformation of the elastic member, thereby switching between a locked state against the second clamping portion and a relaxed state lifted by the elastic member. As a result, the fixing mechanism isomorphism can conveniently realize state changes by rotating the eccentric cam handle, and quickly replace the scraper clamped between the two clamping portions, thereby improving the production efficiency of the battery cell.

[0007] According to some embodiments of the present application, the locking assembly includes a connecting member, a central shaft, and an eccentric cam handle, wherein the connecting member at least partially extends in the thickness direction and is connected to the second clamping portion, the central shaft is connected to an end of the connecting member away from the second clamping portion, and the eccentric cam handle is rotatably connected to the central shaft. The central shaft is connected to the second clamping portion through the connecting member, so that the eccentric cam handle rotatably connected to the central shaft can press the first clamping portion onto the second clamping portion.

[0008] According to some embodiments of the present application, the eccentric cam handle includes an eccentric cam and an extension portion, the eccentric cam is connected between the extension portion and the central axis, the eccentric cam is provided with a first through hole, the central axis is passed through the first through hole and is rotatably connected to the eccentric cam. The eccentric cam can adjust the position of the first clamping portion in the thickness direction by rotation, and the extension portion makes it easy for the handle to rotate under force.

[0009] According to some embodiments of the present application, in the locked state, the distance between the edge of the eccentric cam facing the first clamping part and the central axis of the first through hole is L1, and in the relaxed state, the distance between the edge of the eccentric cam facing the first clamping part and the central axis of the first through hole is L2; ​​1mm≤L1-L2≤3mm. In the relaxed state, the first clamping part and the second clamping part can have a suitable distance.

[0010] According to some embodiments of the present application, the central shaft includes a limiting portion and two rotating portions, the two rotating portions are respectively arranged on two opposite sides of the limiting portion in a first direction, the first direction intersects with the thickness direction, the rotating portion is passed through the first through hole, and the limiting portion is detachably connected to the connecting member, so that the force on the central shaft is more uniform, and the connection between the eccentric cam handle and the central shaft is stable.

[0011] According to some embodiments of the present application, in the second direction, the size of the limiting portion is larger than the size of the rotating portion, and the first direction, the second direction and the thickness direction are arranged to intersect each other. The wider limiting portion is connected to the connecting member to improve the connection stability.

[0012] According to some embodiments of the present application, the limiting part is provided with a second through hole extending in the thickness direction, and the connecting piece is passed through the second through hole and is threadedly connected to the central axis, so that the limiting part has good structural strength and is stably connected to the connecting piece.

[0013] According to some embodiments of the present application, the locking assembly includes a plurality of connecting members and a plurality of central axes, and the plurality of connecting members and the plurality of central axes are arranged one by one and spaced apart along a first direction, and the first direction intersects with the thickness direction. At the same time, a plurality of spaced apart connecting members and the central axes are arranged so that the clamping force of the first clamping part and the second clamping part is uniform, and the movement along the thickness direction is stable.

[0014] According to some embodiments of the present application, the eccentric cam handle includes an extension portion and a plurality of eccentric cams, the eccentric cams are connected and arranged in a one-to-one correspondence with the central axis, and the extension portion at least partially extends along the first direction and is respectively connected to the plurality of eccentric cams. The plurality of eccentric cams are connected by the extension portion having the same larger length, so as to further improve the convenience of switching between the locked state and the released state.

[0015] According to some embodiments of the present application, the locking assembly further includes a buffer pad, which is clamped between the eccentric cam handle and the first clamping portion, and the buffer pad is at least partially arranged around the connecting member, thereby reducing friction consumption when the eccentric cam handle rotates and extending the service life of the fixing mechanism.

[0016] According to some embodiments of the present application, the fixing mechanism further includes a base, which is arranged on a side of the second clamping part away from the first clamping part and is detachably connected to the second clamping part. The two clamping parts are fixed by the base to further stabilize the position of the clamped scraper.

[0017] According to some embodiments of the embodiments of the present application, the first clamping part and the second clamping part are respectively provided with a third through hole and a fourth through hole which are arranged through the thickness direction. The connecting member passes through the third through hole and the fourth through hole and detachably connects the second clamping part to the base.

[0018] According to some embodiments of the present application, the second clamping part is provided with a receiving groove, which is recessed along the thickness direction and is provided close to one side end of the fixing mechanism in the second direction, and the second direction intersects with the thickness direction; in the locked state, the receiving groove and the surface of one side of the first clamping part facing the second clamping part are enclosed to form a clamping cavity, and the clamping cavity is used to fix the scraper. By providing a groove on the second clamping part to form the clamping cavity, it is convenient to adjust the position and size of the clamping cavity.

[0019] According to some embodiments of the present application, the second clamping part is further provided with a positioning groove, and in the second direction, the positioning groove is provided at an end opposite to the accommodating groove; the first clamping part is provided with a positioning part protruding in a direction close to the second clamping part, and the positioning part extends into the positioning groove. This assists in limiting the movement trajectory of the first clamping part relative to the second clamping part, so that the first clamping part is tilted toward one side of the positioning part, and at the same time reduces the possibility of the first clamping part and the second clamping part being displaced from each other.

[0020] According to some embodiments of the present application, in the relaxed state, the spacing between the first clamping portion and the second clamping portion along the thickness direction is smaller than the size of the positioning portion in the thickness direction, thereby reducing the possibility of the positioning portion being disengaged from the positioning groove when the first clamping portion moves away from the second clamping portion.

[0021] In a second aspect, the present application provides a coating device, comprising the fixing mechanism in any embodiment of the first aspect and a scraper, wherein the scraper is clamped between the first clamping portion and the second clamping portion and extends into the clamping cavity.

[0022] In a third aspect, the present application provides a battery production device, comprising the coating device in any embodiment of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 drawings to represent the same components. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a fixing mechanism provided in some embodiments of the present application;

[0025] Figure 2 A schematic diagram of the structure of a fixing mechanism in a relaxed state provided in some embodiments of the present application;

[0026] Figure 3 A schematic diagram of the structure of a fixing mechanism in a locked state provided in some embodiments of the present application;

[0027] Figure 4An exploded view of a fixing mechanism provided in some embodiments of the present application;

[0028] Figure 5 A schematic diagram of the structure of the central axis provided in some embodiments of the present application.

[0029] Reference numerals:

[0030] 100-fixing mechanism; 200-scraper;

[0031] 10-first clamping part; 20-second clamping part; 30-elastic member; 40-locking assembly; 50-base;

[0032] 11-third through hole; 12-positioning portion; 21-clamping cavity; 22-fourth through hole; 23-accommodating groove; 24-positioning groove; 41-eccentric cam handle; 42-connecting piece; 43-central axis; 44-buffer pad;

[0033] 411 - eccentric cam; 412 - extension portion; 413 - first through hole; 431 - limiting portion; 432 - rotating portion; 433 - second through hole;

[0034] X-first direction; Y-second direction; Z-thickness direction. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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).

[0041] 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.

[0042] 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.

[0043] In the present application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0044] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode sheet and a negative electrode sheet. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode sheet and the negative electrode sheet.

[0045] The positive electrode sheet may include a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector. As an example, the positive electrode current collector may be a metal foil or a composite current collector. As an example, the positive electrode active material layer includes a positive electrode active material. The positive electrode active material may include at least one of the following materials: a lithium-containing phosphate, a lithium transition metal oxide, and their respective modified compounds.

[0046] The negative electrode sheet may include a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector. As an example, the negative electrode current collector may be a metal foil, a foamed metal, a foamed carbon, or a composite current collector. As an example, the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based material, tin-based material, lithium titanate, etc.

[0047] Coating is to apply a thin layer of coating material in liquid or powder form on the surface of an object such as fabric, paper, metal foil or plate. Coating is an indispensable step in the manufacturing process of battery cells. In the production process of battery cells, both positive and negative electrodes are made using a coating process. Exemplarily, the positive electrode active material, conductive agent, adhesive and solvent are mixed and made into a paste-like viscous slurry, and then the paste-like viscous slurry is uniformly, continuously or intermittently coated on a substrate (such as aluminum foil) to make a positive electrode sheet.

[0048] During the coating process, the raw material to be coated can be placed in a shallow groove, and a gravure roller with a preset shape of pits on the outer circumference can be partially immersed in the raw material, and the raw material can be attached to the outer circumference of the gravure roller by rotation, and then the raw material attached to other areas outside the pits can be scraped off by a scraper. In this process, the scraper needs to keep in contact with the surface of the gravure roller to ensure that the thickness of the film formed by coating is uniform.

[0049] During the rotation of the gravure roller, the scraper has a fast wear rate because it needs to keep against the outer circumference of the gravure roller for a long time, and usually needs to be replaced after 2h-4h of continuous use. The scraper is usually detachably connected to the fixed base through fasteners such as screws. At the same time, because the size of the scraper needs to match the gravure roller, it usually has a large length dimension, and the number of fasteners required to be set during installation is also large, which makes it troublesome and laborious to replace the scraper, reducing the efficiency of coating, and thus reducing the production efficiency of battery cells.

[0050] In view of this, an embodiment of the present application provides a technical solution, which can effectively improve the efficiency of replacing the scraper by setting a quick-release assembly at the position of clamping the scraper, thereby improving the processing efficiency of the battery cell.

[0051] It can be understood that the fixing mechanism provided in the embodiment of the present application can be applied to but not limited to the production of pole pieces, and can also be used in the production of other workpieces that require a coating process.

[0052] Next, combine with Figure 1 To Attachment Figure 5 The structure of the fixing mechanism 100 will be described.

[0053] Please also read Figures 1 to 4 , Figure 1 A schematic diagram of the structure of a fixing mechanism provided in some embodiments of the present application, Figure 2 This is a schematic diagram of the structure of the fixing mechanism provided in some embodiments of the present application in a relaxed state. Figure 3 This is a schematic diagram of the structure of the fixing mechanism in a locked state provided in some embodiments of the present application. Figure 4 An exploded view of a fixing mechanism provided in some embodiments of the present application.

[0054] In the first aspect, the present application provides a fixing mechanism 100 for fixing a scraper 200, comprising a first clamping portion 10, a second clamping portion 20, an elastic member 30 and a locking assembly 40, wherein the second clamping portion 20 is arranged on one side of the first clamping portion 10 in the thickness direction Z of the fixing mechanism 100, and a clamping cavity 21 for accommodating the scraper 200 is formed between the first clamping portion 10 and the second clamping portion 20, and the first clamping portion 10 has a degree of freedom of movement along the thickness direction Z relative to the second clamping portion 20; the elastic member 30 is at least partially clamped in the first clamping portion 10. The locking assembly 40 is at least partially located on the side of the first clamping portion 10 away from the second clamping portion 20 and is connected to the second clamping portion 20. The locking assembly 40 includes an eccentric cam handle 41. The eccentric cam handle 41 has rotational freedom in a plane parallel to the thickness direction Z. The eccentric cam handle 41 is configured to be able to drive the first clamping portion 10 and the second clamping portion 20 to move relative to each other by rotation so as to switch between a locked state and a relaxed state.

[0055] The embodiment of the present application provides a fixing mechanism 100 , which can be applied to the coating process step in the production process of battery cells and can be used to clamp the coating scraper 200 .

[0056] Specifically, the fixing mechanism 100 includes a first clamping portion 10 and a second clamping portion 20 which are arranged opposite to each other in the thickness direction Z, and a clamping cavity 21 for clamping the scraper 200 is formed between the two clamping portions, and the two can move toward or away from each other in the thickness direction Z. The size of the gap between the two can be changed by moving in the thickness direction Z. The gap area is connected to the clamping cavity 21, so that a gap area with a certain thickness can be formed at the clamping cavity 21 by the away movement of the first clamping portion 10 and the second clamping portion 20, which is convenient for taking out or putting in the scraper 200.

[0057] Optionally, the shape and size of the clamping cavity 21 between the first clamping portion 10 and the second clamping portion 20 can be set according to the shape and size of the scraper 200 to be clamped. In the extension direction of the first clamping portion 10 and the second clamping portion 20, that is, in the first direction X, the extension size of the clamping cavity 21 can be less than or equal to the extension size of the first clamping portion 10 and the second clamping portion 20.

[0058] The fixing mechanism 100 further includes an elastic member 30, which is at least partially sandwiched between the first clamping portion 10 and the second clamping portion 20 and can apply a force to the first and second clamping portions 10 and 20 along the thickness direction Z. The elastic member 30 can be a spring or the like, so that it has a good service life and a low cost. The elastic member 30 can drive the first clamping portion 10 to move away from the second clamping portion 20, so as to form the aforementioned gap between the first and second clamping portions 10 and the second clamping portion 20, which is connected to the clamping cavity 21.

[0059] Optionally, in order to ensure uniform force on all parts of the first clamping portion 10, the fixing mechanism 100 may include a plurality of elastic members 30, which may be at least partially spaced apart along the extension direction of the first clamping portion 10 and arranged in one or more rows, so that a relatively uniform gap can be formed between the first clamping portion 10 and the second clamping portion 20.

[0060] The fixing mechanism 100 also includes a locking assembly 40, which is arranged on the side of the first clamping portion 10 away from the second clamping portion 20 and can abut against the first clamping portion 10. At the same time, the locking assembly 40 is connected to the second clamping portion 20 so that the locking assembly 40 can change the distance between the first clamping portion 10 and the second clamping portion 20 by applying a force to the first clamping portion 10.

[0061] Furthermore, the locking assembly 40 includes an eccentric cam handle 41 (hereinafter referred to as handle 41), which has rotational freedom in a plane parallel to the thickness direction Z, that is, the handle 41 can rotate so that different positions on its edge are toward the first clamping portion 10 and abut against it, so as to drive the first clamping portion 10 to move along the thickness direction Z.

[0062] Specifically, in the fixing mechanism 100, the locking assembly 40 is connected to the second clamping part 20, and the relative positions of the two in the thickness direction Z are fixed. On this basis, the handle 41 is located on the side of the first clamping part 10 away from the second clamping part 20 and abuts against the side surface of the first clamping part 10. The distance between the rotation axis of the handle 41 and the first clamping part 10 is determined by the shape of the handle 41 itself. The aforementioned distance can be changed by rotating the handle 41, so that the first clamping part 10 is pushed to move in the thickness direction Z with the change of the aforementioned distance on the basis of keeping the distance between the second clamping part 20 and the rotation axis of the handle 41 unchanged, and then switch between the locked state and the relaxed state.

[0063] In the locked state, the side with a larger distance between the edge of the handle 41 and the rotating shaft rotates to abut against the first clamping part 10, pushing the first clamping part 10 to move to abut against the second clamping part 20. In the relaxed state, the side with a smaller size between the edge of the handle 41 and the rotating shaft rotates to abut against the first clamping part 10, and the first clamping part 10 is separated from the second clamping part 20 under the action of the elastic member 30 and a gap is formed therebetween. Thus, the two states can be conveniently switched by rotating the handle 41, and the scraper 200 can be conveniently placed in or taken out of the clamping cavity 21 in the relaxed state.

[0064] In the technical solution of the embodiment of the present application, a clamping cavity 21 for clamping and fixing the scraper 200 is formed by stacking the first clamping part 10 and the second clamping part 20 in the thickness direction Z, and the first clamping part 10 and the second clamping part 20 can move relative to each other in the thickness direction Z through the elastic member 30. A locking assembly 40 including an eccentric cam handle 41 is provided on the side of the first clamping part 10 away from the second clamping part 20. On the basis of the connection between the handle 41 and the second clamping part 20, the first clamping part 10 can be driven to move along the thickness direction Z through the rotation of the eccentric cam handle 41 and the elastic deformation of the elastic member 30, so as to switch between the locked state against the second clamping part 20 and the relaxed state lifted by the elastic member 30. Therefore, the fixing mechanism 100 isomorphic to realize the state change conveniently by rotating the eccentric cam handle 41, and quickly replace the scraper 200 clamped between the two clamping parts, thereby improving the production efficiency of the battery cell.

[0065] In some optional embodiments, the locking assembly 40 includes a connecting member 42, a central shaft 43, and an eccentric cam handle 41. The connecting member 42 extends at least partially along the thickness direction Z and is connected to the second clamping portion 20. The central shaft 43 is connected to one end of the connecting member 42 that is away from the second clamping portion 20, and the eccentric cam handle 41 is rotatably connected to the central shaft 43.

[0066] The locking assembly 40 may include a connecting member 42 for connecting with the second clamping portion 20 , a central shaft 43 as a rotation axis of the eccentric cam handle 41 , and the eccentric cam handle 41 connected to the central shaft 43 .

[0067] The connecting member 42 may at least partially extend along the thickness direction Z and pass through the first clamping portion 10, and may be used to limit the moving direction of the first clamping portion 10 at the same time. The connecting member 42 may be connected to the central axis 43 by a detachable connection method such as threaded connection, crimping, clamping, fastener connection, etc., so as to facilitate disassembly and assembly. The end of the connecting member 42 away from the central axis 43 may extend to the second clamping portion 20 and be connected and fixed thereto, so that the relative position between the central axis 43 and the second clamping portion 20 in the thickness direction Z is fixed, so that the handle 41 can apply a force to the first clamping portion 10 by rotating and cause it to displace relative to the second clamping portion 20.

[0068] The center axis 43 is connected to the connecting piece 42 and is used for rotational connection with the handle 41. The center axis 43 can fix its position in the thickness direction Z through the connecting piece 42, and enable the handle 41 to have a stable rotation center axis 43, so that it is convenient to adjust the downward stroke and the clamping force of the first clamping part 10 by adjusting the shape of the handle 41.

[0069] Optionally, similar to the elastic member 30 in the fixing mechanism 100, a plurality of connecting members 42 and central axes 43 may be provided, and at least partially arranged at intervals in the extension direction of the first clamping portion 10 and the second clamping portion 20, so that the clamping force formed is uniform and reliable.

[0070] The central shaft 43 is arranged to be connected to the second clamping part 20 through the connecting member 42, so that the eccentric cam handle 41 rotatably connected to the central shaft 43 can easily drive the first clamping part 10 to move relative to the second clamping part 20 through its own rotation.

[0071] In some optional embodiments, the eccentric cam handle 41 includes an eccentric cam 411 and an extension portion 412, the eccentric cam 411 is connected between the extension portion 412 and the central shaft 43, the eccentric cam 411 is provided with a first through hole 413, the central shaft 43 is passed through the first through hole 413 and is rotatably connected to the eccentric cam 411.

[0072] In the locking assembly 40, the eccentric cam handle 41 may further include an eccentric cam 411 for driving the first clamping portion 10 to move and an extension portion 412 for facilitating the rotation of the eccentric cam 411. The two are interconnected and may be fixedly connected or integrally arranged to have good structural strength.

[0073] Optionally, the outer contour of the eccentric cam 411 may be circular or elliptical, etc., so that the handle 41 is easy to rotate and can smoothly press down the first clamping part 10. At the same time, the eccentric cam 411 may be provided with a first through hole 413 for rotational connection.

[0074] On this basis, in embodiments where the eccentric cam 411 is in an elliptical shape with an outer contour having an unequal distance between it and its own center axis 43, the center axis 43 of the first through hole 413 and the center axis 43 of the eccentric cam 411 itself may coincide with each other; in embodiments where the eccentric cam 411 is circular, the center axis 43 of the first through hole 413 and the center axis 43 of the eccentric cam 411 itself are staggered with each other to achieve the movement of the first clamping portion 10 by driving it to move through rotation.

[0075] Optionally, the eccentric cam 411 may be circular, and the first through hole 413 may be a circular hole staggered from the central axis 43, so that the handle 41 as a whole is easy to process.

[0076] At the position where the eccentric cam 411 contacts the first clamping part 10, the first clamping part 10 may be provided with a groove of a certain depth to accommodate part of the eccentric cam 411. The depth of the groove may be less than the minimum spacing between the center shaft 43 and the edge of the eccentric cam 411 to reduce the possibility of contact between the center shaft 43 and the first clamping part 10. By providing the groove and partially disposing the eccentric cam 411 in the groove, the extension dimension of the fixing mechanism 100 in the thickness direction Z can be reduced without affecting the rotation of the handle 41, thereby reducing the required space.

[0077] The extension portion 412 is connected to the eccentric cam 411, and is used to extend the torque when the handle 41 is turned, so as to reduce the force required when switching between the loose state and the locked state, thereby improving the practicality of the fixing mechanism 100. The connection position of the extension portion 412 and the eccentric cam 411 can be set according to the shape of the eccentric cam 411 and the position of the first through hole 413, so that the extension portion 412 is located at a position that is convenient for operation when switching the state.

[0078] In some optional embodiments, in the locked state, the distance between the edge of the eccentric cam 411 facing the first clamping portion 10 and the center axis 43 of the first through hole 413 is L1, and in the relaxed state, the distance between the edge of the eccentric cam 411 facing the first clamping portion 10 and the center axis 43 of the first through hole 413 is L2; ​​1mm≤L1-L2≤3mm.

[0079] The eccentric cam 411 is provided with a first through hole 413 for rotationally connecting with the central axis 43. The central axis 43 of the first through hole 413 deviates from the central axis 43 of the eccentric cam 411 as a whole to form an eccentric structure, so that the handle 41 can adjust the position of the first clamping part 10 in the thickness direction Z by rotation.

[0080] On this basis, the size between the edge of the eccentric cam 411 and the central axis 43 of the first through hole 413 is further defined. Along the thickness direction Z, in the locked state, the distance between the edge of the eccentric cam 411 facing the first clamping portion 10 and the central axis 43 of the first through hole 413 is recorded as L1.

[0081] Specifically, the spacing here refers to: an auxiliary straight line passing through the central axis 43 of the first through hole 413 along the thickness direction Z, the auxiliary straight line forms a first intersection with the edge of the eccentric cam 411, and the spacing between the first intersection and the central axis 43 of the first through hole 413 is L1.

[0082] Similarly, the distance between the edge of the eccentric cam 411 facing the first clamping part 10 and the central axis 43 of the first through hole 413 in the relaxed state is recorded as L2. Then the difference between L1 and L2 is 1mm-3mm, for example, it can be any one of 1mm, 1.5mm, 2mm, 2.5mm, 3mm or between any two of them. Therefore, when switching between the locked state and the relaxed state, the stroke of the first clamping part 10 moving relative to the second clamping part 20 along the thickness direction Z corresponds to the same difference between L1 and L2, that is, the stroke of the first clamping part 10 is 1mm-3mm. It can be further expressed that in the relaxed state, the thickness of the gap between the first clamping part 10 and the second clamping part 20 is 1mm-3mm.

[0083] By adjusting the eccentric size of the eccentric cam 411, the stroke of the first clamping part 10 and the size of the gap that can be formed between the two clamping parts can be adjusted accordingly, so that in the relaxed state, there can be an appropriate distance between the first clamping part 10 and the second clamping part 20, which facilitates the placement or removal of the scraper 200 into the clamping cavity 21, thereby improving the applicability of the fixing mechanism 100.

[0084] See also Figure 5 , Figure 5 A schematic diagram of the structure of the central axis provided in some embodiments of the present application. In some optional embodiments, the central axis 43 includes a limiting portion 431 and two rotating portions 432, the two rotating portions 432 are respectively arranged on opposite sides of the limiting portion 431 in the first direction X, the first direction X intersects with the thickness direction Z, the rotating portion 432 is penetrated by the first through hole 413, and the limiting portion 431 is detachably connected to the connecting member 42.

[0085] The central axis 43 may include a limiting portion 431 and two rotating portions 432 arranged on both sides of the limiting portion 431 in the first direction X. The rotating portion 432 is used to connect with the eccentric cam 411 so that the eccentric cam 411 has rotational freedom, and the limiting portion 431 is used to connect with the connecting member 42 so that the handle 41 can be connected to the second clamping portion 20 through the connecting member 42.

[0086] Specifically, the rotating portion 432 may be a cylindrical structure protruding from both sides of the limiting portion 431, and is used to form a rotating shaft. Correspondingly, the eccentric cam 411 is provided with a first through hole 413, and the rotating portion 432 is inserted into the first through hole 413. In the embodiment where the central shaft 43 includes two rotating portions 432, the two rotating portions 432 may be rotatably connected to the eccentric cam 411, that is, the eccentric cam 411 may include two substructures. By connecting the two rotating portions 432 to the eccentric cam 411, the stability of the connection can be improved, and the handle 41 is not easy to slip off the central shaft 43 during the process of rotating and applying a force. At the same time, the force on the central shaft 43 can be more uniform, thereby improving the reliability of the locking assembly 40.

[0087] Optionally, the limiting portion 431 and the connecting member 42 may be connected in a detachable manner such as by snap connection, crimping, fastener connection, threaded connection, etc., so that the locking assembly 40 as a whole is easy to assemble, disassemble and maintain.

[0088] In some optional embodiments, in the second direction Y, the size of the limiting portion 431 is greater than the size of the rotating portion 432 , and the first direction X, the second direction Y, and the thickness direction Z are arranged to intersect in pairs.

[0089] In an embodiment where the central axis 43 includes a limiting portion 431 and a rotating portion 432, the width of the limiting portion 431 may be greater than the width of the rotating portion 432, that is, the extension dimension of the limiting portion 431 in the second direction Y may be greater than the diameter of the rotating portion 432, so that the limiting portion 431 protrudes from the rotating portion 432 on at least one of the two relative sides along the second direction Y.

[0090] Optionally, the limiting portion 431 and the rotating portion 432 are projected along the thickness direction Z, and the orthographic projection of the limiting portion 431 can be symmetrically arranged with respect to the orthographic projection of the central axis 43 of the rotating portion 432, so that the limiting portion 431 protrudes uniformly from the rotating portion 432 on both opposite sides in the second direction Y, thereby further making the central axis 43 evenly stressed.

[0091] The limiting portion 431 in the central shaft 43 is used for connection and fixation with the connecting member 42. By providing a wider limiting portion 431, the structural strength of the central shaft 43 and the connection stability with the connecting member 42 can be improved, thereby improving the reliability of the fixing mechanism 100.

[0092] In some optional embodiments, the limiting portion 431 is provided with a second through hole 433 extending along the thickness direction Z, and the connecting member 42 is passed through the second through hole 433 and is threadedly connected to the central axis 43 .

[0093] In an embodiment in which a limiting portion 431 is provided on the central axis 43, the limiting portion 431 may be provided with a second through hole 433 extending along the thickness direction Z. The second through hole 433 may be a circular hole and a thread is provided on at least a portion of the hole wall. By also providing a thread in a corresponding area of ​​the connecting member 42 and passing it through the second through hole 433, the connecting member 42 can be threadedly connected to the central axis 43 to facilitate installation and ensure a stable connection.

[0094] It can be understood that the second through hole 433 can be selected as a hole that penetrates along the thickness direction Z, so as to adjust the height position of the center axis 43 on the connecting member 42 by rotating one of the connecting member 42 and the center axis 43, thereby adjusting the downward movement stroke of the first clamping portion 10 when switching to the locking state.

[0095] Alternatively, the second through hole 433 may be replaced by a threaded blind hole that does not penetrate the limiting portion 431, the opening of the blind hole is located on the side facing the first clamping portion 10, and is recessed along the thickness direction Z. In this embodiment, the connecting member 42 may be provided with threads at the end, and extend into the hole to be threadedly connected with the central shaft 43.

[0096] By providing the second through hole 433 in the limiting portion 431 with a larger width, the central axis 43 can have good structural strength and be stably connected to the connecting member 42 .

[0097] In some optional embodiments, the locking assembly 40 includes a plurality of connecting members 42 and a plurality of central axes 43 , and the plurality of connecting members 42 and the plurality of central axes 43 are arranged one by one and spaced apart along a first direction X, and the first direction X intersects with the thickness direction Z.

[0098] Optionally, the locking assembly 40 may include a plurality of connecting members 42 and a plurality of central shafts 43. To facilitate installation of the central shafts 43, each central shaft 43 may have a shorter length and be connected and arranged one-to-one with the connecting member 42. The plurality of central shafts 43 and the connecting members 42 may be arranged at intervals along the extension direction of the first clamping portion 10, that is, the first direction X, so that a force is uniformly applied to the first clamping portion 10 at all locations during compression.

[0099] Optionally, each connecting member 42 can have the same size and structure, each central axis 43 can have the same size and structure, and the connecting members 42 and the central axis 43 can be arranged at equal intervals in the first direction X, so as to further improve the uniformity of the clamping force while facilitating the processing of the fixing mechanism 100.

[0100] By simultaneously providing a plurality of spaced-apart connecting members 42 and a central axis 43 , the clamping force of the first clamping portion 10 and the second clamping portion 20 can be uniform and the clamping strength can be reliable, and the movement trajectory of the first clamping portion 10 along the thickness direction Z can be stabilized.

[0101] In some optional embodiments, the eccentric cam handle 41 includes an extension portion 412 and multiple eccentric cams 411, the eccentric cams 411 are connected to the central axis 43 in a one-to-one correspondence, and the extension portion 412 at least partially extends along the first direction X and is respectively connected to the multiple eccentric cams 411.

[0102] In the same eccentric cam handle 41, multiple eccentric cams 411 may be provided at the same time, and these eccentric cams 411 may be connected to the same extension portion 412. Corresponding to the aforementioned multiple connecting members 42 and multiple central shafts 43, the fixing mechanism 100 may include multiple eccentric cams 411, and these eccentric cams 411 may be connected and provided correspondingly to the central shaft 43 one by one, so that the pressing force received by each part of the first clamping portion 10 is uniform.

[0103] It can be understood that in the embodiment where the central shaft 43 includes two rotating parts 432, the two rotating parts 432 can be optionally both sleeved in the eccentric cam 411, that is, each eccentric cam 411 can include two sub-parts spaced apart from each other, and the two sub-parts are respectively connected to the two rotating parts 432.

[0104] Multiple eccentric cams 411 can be connected to the same extension portion 412, and the extension portion 412 can have a certain extension dimension in the first direction X, so that it can be simultaneously connected to multiple eccentric cams 411 that are spaced apart. Optionally, the fixing mechanism 100 can include only one extension portion 412, and each eccentric cam 411 is connected to the extension portion 412 to form an eccentric cam handle 41 whose extension dimension in the first direction X is close to that of the first clamping portion 10 and the second clamping portion 20, so as to further speed up the speed of replacing the scraper 200.

[0105] Alternatively, the fixing mechanism 100 may include a plurality of eccentric cam handles 41 arranged along the first direction X, each handle 41 being provided with an extension portion 412 and a plurality of eccentric cams 411. By providing a plurality of handles 41, the handles 41 can be easily processed and installed, and the force required for switching states can be reduced, so that the fixing mechanism 100 is easy to operate.

[0106] In some optional embodiments, the locking assembly 40 further includes a buffer pad 44 , which is clamped between the eccentric cam handle 41 and the first clamping portion 10 , and the buffer pad 44 is at least partially disposed around the connecting member 42 .

[0107] The locking assembly 40 of the fixing mechanism 100 includes a handle 41, which can rotate and push the first clamping portion 10 and the second clamping portion 20 to abut against and press each other to fix the scraper 200 in the clamping cavity 21. On this basis, the locking assembly 40 can also include a buffer pad 44, which is clamped between the handle 41 and the first clamping portion 10 to provide a function of reducing friction damage.

[0108] The buffer pad 44 may be made of rubber, hard plastic or resin, and may be arranged around the connecting member 42 so that the handle 41 does not directly contact the first clamping portion 10. The first clamping portion 10 may be provided with a groove of a corresponding shape for accommodating the buffer pad 44, so as to reduce the possibility of friction and displacement of the buffer pad 44.

[0109] By providing a buffer pad 44 between the handle 41 and the first clamping portion 10 , the friction consumption when the eccentric cam handle 41 rotates can be reduced, and the possibility of collision between metal parts with higher hardness can be reduced, thereby extending the service life of the fixing mechanism 100 .

[0110] In some optional embodiments, the fixing mechanism 100 further includes a base 50 , which is disposed on a side of the second clamping portion 20 away from the first clamping portion 10 and is detachably connected to the second clamping portion 20 .

[0111] Optionally, the fixing mechanism 100 may further include a base 50, which may be disposed on a side of the second clamping portion 20 away from the first clamping portion 10 and used to connect and fix the second clamping portion 20. The base 50 may be detachably connected to the second clamping portion 20 by means of snap connection, crimping, fastener connection, etc., so that the fixing mechanism 100 is easy to install.

[0112] Alternatively, the base 50 may be an independently arranged support structure, for example, a support frame composed of a plurality of rod-shaped structures. Alternatively, the base 50 may be a part of a structure shared with other mechanisms or devices, so as to integrate the fixing mechanism 100 with other components in the coating device to improve space utilization. A side surface of the base 50 facing the second clamping portion 20 may be arranged in a conformal manner with the second clamping portion 20, and staggered with the opening of the clamping cavity 21 to reduce the possibility of interference with the insertion or removal of the scraper 200.

[0113] By providing the base 50 to fix the two clamping parts, the position of the clamped scraper 200 can be further stabilized.

[0114] In some optional embodiments, the first clamping portion 10 and the second clamping portion 20 are respectively provided with a third through hole 11 and a fourth through hole 22 penetrating along the thickness direction Z, and the connecting member 42 passes through the third through hole 11 and the fourth through hole 22, and detachably connects the second clamping portion 20 to the base 50.

[0115] In the embodiment with the base 50, the connection and fixation between the second clamping part 20 and the base 50 and the connection and fixation between the handle 41 and the second clamping part 20 can be achieved by the connecting member 42 and the plurality of through holes. Optionally, the first clamping part 10 and the second clamping part 20 can be respectively provided with a third through hole 11 and a fourth through hole 22 that penetrate along the thickness direction Z and are correspondingly arranged in the direction, and the connecting member 42 is simultaneously penetrated in the aforementioned two through holes. The connecting member 42 can be a bolt, and the third through hole 11 and the fourth through hole 22 can be circular holes.

[0116] Exemplarily, the fourth through hole 22 can have the same or similar apertures at various locations, and the connecting piece 42 is threadedly connected to the base 50 through end threads, and is crimped to the second clamping portion 20 through its own step structure, that is, the connecting piece 42 includes a first section and a second section having a diameter larger than the first section, and the first section is located in the fourth through hole 22, and the interface between the two sections is crimped to a side surface of the second clamping portion 20 facing the first clamping portion 10, so as to realize a detachable connection between the second clamping portion 20 and the base 50.

[0117] Further, in the first clamping part 10, the third through hole 11 can be used to accommodate at least part of the second section, and the aperture of the third through hole 11 can be greater than or equal to the aperture of the fourth through hole 22. At the same time, the connecting member 42 is protruded from the first clamping part 10 in a direction away from the second clamping part 20 to be connected with the central shaft 43, so that the eccentric cam handle 41 can abut against the first clamping part 10. By passing the connecting member 42 through the third through hole 11 of the first clamping part 10, the moving direction of the first clamping part 10 can be limited, so that it can move along the thickness direction Z in the relaxed state, so as to switch between states.

[0118] By providing through holes on both the first clamping portion 10 and the second clamping portion 20 , multiple connection relationships can be formed through the same connecting member 42 , saving installation space, and at the same time making the handle 41 and the central axis 43 more stable during the rotation process.

[0119] In some optional embodiments, the second clamping portion 20 is provided with a receiving groove 23, which is recessed along the thickness direction Z and is arranged close to one side end of the fixing mechanism 100 in the second direction Y, and the second direction Y intersects with the thickness direction Z; in the locked state, the receiving groove 23 and the side surface of the first clamping portion 10 facing the second clamping portion 20 form a clamping cavity 21, and the clamping cavity 21 is used to fix the scraper 200.

[0120] Optionally, the second clamping portion 20 may be provided with a accommodating groove 23, which is arranged near one end of the second clamping portion 20 in the second direction Y, and may have a side wall only on one side in the second direction Y, and the other side is directly connected to the external space, so that after the first clamping portion 10 and the second clamping portion 20 are abutted and pressed, a clamping cavity 21 with an opening in the second direction Y can be formed, thereby accommodating part of the structure of the scraper 200.

[0121] Optionally, the opening of the receiving groove 23 may be located on one side surface of the second clamping portion 20 facing the first clamping portion 10, and the receiving groove 23 may be recessed along the thickness direction Z, and the recessed depth may be slightly greater than the thickness of the scraper 200, so that the scraper 200 can be clamped. The shape and size of the receiving groove 23 may be designed according to the shape and size of the scraper 200 to be clamped, so that the two can be arranged in accordance with the shape, which is convenient for clamping and fixing.

[0122] Optionally, in order to make the clamping and fixing of the scraper 200 more reliable, a flexible pad, such as a rubber pad, can be provided on the bottom wall of the accommodating groove 23 and / or in the area corresponding to the first clamping portion 10 and the accommodating groove 23 to increase the friction and stabilize the position of the scraper 200.

[0123] By providing a groove on the second clamping portion 20 to form the clamping cavity 21 , it is possible to adjust the position and size of the clamping cavity 21 and to maintain the position of the scraper 200 stable during the pressing process of the first clamping portion 10 .

[0124] In some optional embodiments, the second clamping portion 20 is further provided with a positioning groove 24, and in the second direction Y, the positioning groove 24 is arranged at an end opposite to the accommodating groove 23; the first clamping portion 10 is protruding along a direction close to the second clamping portion 20 and provided with a positioning portion 12, and the positioning portion 12 extends into the positioning groove 24.

[0125] Optionally, the second clamping portion 20 may also be provided with a positioning groove 24, which may be located at an end of the fixing mechanism 100 away from the scraper 200, that is, in the second direction Y, the fixing groove and the aforementioned accommodating groove 23 are respectively provided near the two opposite ends of the second clamping portion 20. The positioning groove 24 may be provided in connection with the end near it, that is, only one side has a side wall in the second direction Y, and the other side is connected to the external space, or the positioning groove 24 may be provided at intervals from the side end so that it has two opposite side walls in the second direction Y.

[0126] Corresponding to the positioning groove 24, the first clamping portion 10 is provided with a positioning portion 12, which protrudes toward the side close to the second clamping portion 20 and corresponds to the positioning groove 24 in the thickness direction Z. The shape of the positioning portion 12 can match the shape of the positioning groove 24, and the cross-sectional area of ​​the positioning portion 12 is smaller than the cross-sectional area of ​​the positioning groove 24 and can extend into the positioning groove 24.

[0127] Optionally, the positioning groove 24 may be rectangular, circular, trapezoidal or polygonal, etc. The positioning groove 24 is recessed along the thickness direction Z, and its cross-sectional area may gradually increase in the direction close to the first clamping portion 10, or keep the cross-sectional area the same at all locations, so that the positioning portion 12 can extend into the groove.

[0128] Optionally, along the extension direction of the first clamping portion 10 and the second clamping portion 20, that is, along the first direction X, the positioning groove 24 and the positioning portion 12 can extend continuously, or the positioning groove 24 can include a plurality of spaced-apart sub-grooves, and the positioning portion 12 can be correspondingly arranged as a plurality of mutually spaced-apart sub-portions and extend into the plurality of sub-grooves respectively.

[0129] In the relaxed state, the first clamping portion 10 is lifted up by the elastic member 30 and can abut against the handle 41. Therefore, when switching from the relaxed state to the locked state, the handle 41 rotates and presses down the first clamping portion 10 and generates friction with the first clamping portion 10, thereby easily generating friction force on the first clamping portion 10 along the second direction Y. Therefore, by providing the positioning portion 12 and the positioning groove 24, the movement trajectory of the first clamping portion 10 relative to the second clamping portion 20 can be limited, reducing the possibility of mutual misalignment of the two in the second direction Y during the state switching process, thereby improving the clamping stability of the scraper 200.

[0130] At the same time, by setting the positioning portion 12, the weight of the first clamping portion 10 at the side end can be increased, and the groove wall of the positioning groove 24 can provide a certain force to the first clamping portion 10, so that the first clamping portion 10 is not easy to tilt toward the side where the accommodating groove 23 is located after being lifted by the elastic member 30, that is, the side where the scraper 200 is placed remains open and has an accommodating space, thereby making it more convenient to put in or take out the clamped scraper 200.

[0131] In some optional embodiments, in the relaxed state, the distance between the first clamping portion 10 and the second clamping portion 20 along the thickness direction Z is smaller than the dimension of the positioning portion 12 in the thickness direction Z.

[0132] In an embodiment in which a positioning portion 12 and a positioning groove 24 are provided, the distance between the first clamping portion 10 and the second clamping portion 20 in a relaxed state can be made smaller than the extension dimension of the positioning portion 12 in the thickness direction Z, that is, after the first clamping portion 10 pops up, the positioning portion 12 still maintains a structure in which it partially extends into the positioning groove 24, thereby further improving the relative position stability between the first clamping portion 10 and the second clamping portion 20 and reducing the possibility of the positioning portion 12 being detached from the positioning groove 24 when the first clamping portion 10 moves in a direction away from the second clamping portion 20.

[0133] In a second aspect, the present application provides a coating device, comprising the fixing mechanism 100 and a scraper 200 in any embodiment of the first aspect, wherein the scraper 200 is clamped between the first clamping portion 10 and the second clamping portion 20 and extends into the clamping cavity 21 .

[0134] In a third aspect, the present application provides a battery production device, comprising the coating device in any embodiment of the second aspect.

[0135] The coating device and battery production equipment provided in the embodiments of the present application have all the beneficial effects of the fixing mechanism 100 in any of the embodiments of the first aspect mentioned above. For details, please refer to the specific description of the fixing mechanism 100 in the above embodiments, and this embodiment will not be repeated here.

[0136] The embodiment of the present application provides a fixing mechanism 100 for fixing a scraper 200, comprising a first clamping portion 10, a second clamping portion 20, an elastic member 30 and a locking assembly 40, wherein the second clamping portion 20 is arranged on one side of the first clamping portion 10 in the thickness direction Z of the fixing mechanism 100, a clamping cavity 21 for accommodating the scraper 200 is formed between the first clamping portion 10 and the second clamping portion 20, and the first clamping portion 10 has a degree of freedom of movement along the thickness direction Z relative to the second clamping portion 20; the elastic member 30 is at least partially clamped in the first clamping portion The locking assembly 40 is at least partially located on the side of the first clamping portion 10 away from the second clamping portion 20 and is connected to the second clamping portion 20. The locking assembly 40 includes an eccentric cam handle 41. The eccentric cam handle 41 has rotational freedom in a plane parallel to the thickness direction Z. The eccentric cam handle 41 is configured to be able to drive the first clamping portion 10 and the second clamping portion 20 to move relative to each other by rotation so as to switch between a locked state and a relaxed state.

[0137] The locking assembly 40 includes a connecting member 42, a central shaft 43, and an eccentric cam handle 41. The connecting member 42 at least partially extends along the thickness direction Z and is connected to the second clamping portion 20. The central shaft 43 is connected to one end of the connecting member 42 away from the second clamping portion 20. The eccentric cam handle 41 is rotatably connected to the central shaft 43. The eccentric cam handle 41 includes an eccentric cam 411 and an extension portion 412. The eccentric cam 411 is connected between the extension portion 412 and the central shaft 43. The eccentric cam 411 is provided with a first through hole 413. The central shaft 43 is passed through the first through hole 413 and is rotatably connected to the eccentric cam 411.

[0138] 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 fixing mechanism for fixing a scraper, characterized in that: include: a first clamping portion; A second clamping portion is arranged on one side of the first clamping portion in the thickness direction of the fixing mechanism, a clamping cavity for accommodating the scraper is formed between the first clamping portion and the second clamping portion, and the first clamping portion has a degree of freedom of movement along the thickness direction relative to the second clamping portion; an elastic member, at least partially sandwiched between the first clamping portion and the second clamping portion, and capable of generating elastic deformation in the thickness direction; A locking assembly is at least partially located on a side of the first clamping portion away from the second clamping portion and is connected to the second clamping portion. The locking assembly includes an eccentric cam handle, which has rotational freedom in a plane parallel to the thickness direction. The eccentric cam handle is configured to be able to drive the first clamping portion and the second clamping portion to move relative to each other by rotation so as to switch between a locked state and a relaxed state.

2. The fixing mechanism according to claim 1, characterized in that: The locking assembly also includes a connecting member and a central axis. The connecting member at least partially extends along the thickness direction and is connected to the second clamping portion. The central axis is connected to an end of the connecting member away from the second clamping portion. The eccentric cam handle is rotatably connected to the central axis.

3. The fixing mechanism according to claim 2, characterized in that: The eccentric cam handle includes an eccentric cam and an extension portion, the eccentric cam is connected between the extension portion and the central shaft, the eccentric cam is provided with a first through hole, the central shaft is passed through the first through hole and is rotatably connected to the eccentric cam.

4. The fixing mechanism according to claim 3, characterized in that: In the locked state, the distance between the edge of the eccentric cam facing the first clamping portion and the central axis of the first through hole is L1, and in the relaxed state, the distance between the edge of the eccentric cam facing the first clamping portion and the central axis of the first through hole is L2; 1mm≤L1-L2≤3mm.

5. The fixing mechanism according to claim 3, characterized in that: The central axis includes a limiting portion and two rotating portions, wherein the two rotating portions are respectively arranged on opposite sides of the limiting portion in a first direction, wherein the first direction intersects with the thickness direction, and the rotating portion is passed through the first through hole, and the limiting portion is detachably connected to the connecting member.

6. The fixing mechanism according to claim 5, characterized in that: In the second direction, the size of the limiting portion is greater than the size of the rotating portion, and the first direction, the second direction and the thickness direction are arranged to intersect each other.

7. The fixing mechanism according to claim 5, characterized in that: The limiting portion is provided with a second through hole extending along the thickness direction, and the connecting member is penetrated through the second through hole and is threadedly connected to the central axis.

8. The fixing mechanism according to claim 3, characterized in that: The locking assembly includes a plurality of the connecting members and a plurality of the central axes, and the plurality of the connecting members and the plurality of the central axes are arranged one by one and spaced apart along a first direction, and the first direction intersects with the thickness direction.

9. The fixing mechanism according to claim 8, characterized in that: The eccentric cam handle includes an extension portion and a plurality of eccentric cams. The eccentric cams are connected to the central axis in a one-to-one correspondence. The extension portion at least partially extends along the first direction and is respectively connected to the plurality of eccentric cams.

10. The fixing mechanism according to claim 2, characterized in that: The locking assembly further includes a buffer pad, which is clamped between the eccentric cam handle and the first clamping portion, and the buffer pad is at least partially arranged around the connecting member.

11. The fixing mechanism according to claim 2, characterized in that: The fixing mechanism further includes a base, which is disposed on a side of the second clamping portion away from the first clamping portion and is detachably connected to the second clamping portion.

12. The fixing mechanism according to claim 11, characterized in that: The first clamping portion and the second clamping portion are respectively provided with a third through hole and a fourth through hole which are arranged to penetrate along the thickness direction. The connecting member passes through the third through hole and the fourth through hole and detachably connects the second clamping portion to the base.

13. The fixing mechanism according to claim 1, characterized in that: The second clamping portion is provided with a receiving groove, the receiving groove is recessed along the thickness direction and is provided close to one side end of the fixing mechanism in the second direction, and the second direction intersects with the thickness direction; In the locked state, the accommodating groove and a side surface of the first clamping portion facing the second clamping portion are combined to form the clamping cavity, and the clamping cavity is used to fix the scraper.

14. The fixing mechanism according to claim 13, characterized in that: The second clamping portion is further provided with a positioning groove, and in the second direction, the positioning groove is provided at an end opposite to the accommodating groove; The first clamping portion is provided with a positioning portion protruding in a direction close to the second clamping portion, and the positioning portion extends into the positioning groove.

15. The fixing mechanism according to claim 14, characterized in that: In the relaxed state, a distance between the first clamping portion and the second clamping portion along the thickness direction is smaller than a dimension of the positioning portion in the thickness direction.

16. A coating device, characterized in that: include: The fixing mechanism according to any one of claims 1 to 15; The scraper is clamped between the first clamping part and the second clamping part and extends into the clamping cavity.

17. A battery production device, characterized in that: Comprising the coating device as claimed in claim 16.

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