Spraying device and battery production line

Abstract

The utility model relates to the technical field of battery manufacturing, and provides a spraying device and a battery production line. The spraying device comprises a bottom die, the top surface of the bottom die is provided with a limiting groove, the limiting groove comprises an arc-shaped concave surface and a vertical surface connected with the arc-shaped concave surface, the arc-shaped concave surface is configured to be matched with the shape of the peripheral surface of a cylindrical battery monomer, and the vertical surface is provided with a spraying channel; the first end face is arranged corresponding to a cylindrical battery monomer and provided with a welding seam; the dip-coating piece is arranged on the vertical face, a spraying hole is formed in the dip-coating piece, the spraying hole communicates with the spraying channel, and the dip-coating piece is configured to be attached to the welding seam; and the clamping mechanism is used for clamping the cylindrical battery monomer, and the clamping mechanism is used for driving the cylindrical battery monomer to rotate around the axial direction of the cylindrical battery monomer. According to the technical scheme, the efficiency of spraying the anticorrosive paint on the welding seam of the cylindrical battery monomer can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a spraying device and a battery production line. Background Art

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

[0003] At present, battery devices are divided into hard-shell batteries, soft-pack batteries and cylindrical batteries based on their morphology. Among them, cylindrical batteries are valued due to their high volume energy density, simple structure, easy grouping and ease of standardization.

[0004] In the related art, a cylindrical battery cell has a weld at the bottom. Since the structure of the weld is relatively complex, corrosion protection at the weld is difficult and inefficient. Utility Model Content

[0005] The purpose of the present application is to provide a spraying device and a battery production line, which are used to at least improve the anti-corrosion efficiency of the bottom weld of a cylindrical battery cell. This purpose is achieved through the following technical solutions:

[0006] In the first aspect, the present application provides a spraying device, comprising: a bottom mold, a top surface of which is provided with a limiting groove, the limiting groove comprising an arcuate concave surface and a vertical surface connected to the arcuate concave surface, the arcuate concave surface is configured to adapt to the shape of the outer peripheral surface of the cylindrical battery cell, the vertical surface is provided with a spraying channel, and is configured to correspond to the first end surface of the cylindrical battery cell having a weld; a dip-coating member, arranged on the vertical surface, the dip-coating member is provided with a spraying hole, the spraying hole is connected to the spraying channel, and the dip-coating member is configured to fit the weld; a clamping mechanism, the clamping mechanism is used to clamp the cylindrical battery cell, and the clamping mechanism is used to drive the cylindrical battery cell to rotate around the axial direction of the cylindrical battery cell.

[0007] According to the spraying device provided by the present application, a limiting groove is provided on the bottom mold, the limiting groove has an arc-shaped concave surface adapted to the shape of the outer peripheral surface of the cylindrical battery cell, and a vertical surface is arranged opposite to the first end surface of the cylindrical battery cell having a weld, and a spraying channel is provided on the vertical surface, and the spraying channel is used to circulate the anti-corrosion coating. A dip-coating piece is provided on the vertical surface, and a spraying hole is provided on the dip-coating piece for spraying the weld formed on the first end surface of the cylindrical battery cell with the anti-corrosion coating. After the clamping mechanism clamps the cylindrical battery cell, the cylindrical battery cell can be moved into the limiting groove, and the weld of the cylindrical battery cell can be fit with the dip-coating piece. In addition, the clamping mechanism can also drive the cylindrical battery cell to rotate. During the rotation process, the dip-coating piece continuously sprays the anti-corrosion coating, thereby realizing continuous spraying of the anti-corrosion coating on the weld, thereby improving the efficiency of spraying the anti-corrosion coating on the weld of the cylindrical battery cell.

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

[0009] In some embodiments of the present application, the dip-coated part includes a spraying surface and a first side surface and a second side surface respectively located on opposite sides of the spraying surface, wherein the spraying surface is provided with the spraying hole, and the first side surface and the second side surface are sealing surfaces.

[0010] In the above technical scheme, the anti-corrosion coating can only be sprayed on the weld of the dip-coated part through the spraying surface. Since the first side surface and the second side surface arranged on both sides of the spraying surface are sealing surfaces, no anti-corrosion coating will be sprayed out from the first side surface and the second side surface, thereby reducing the risk of the area other than the weld of the first end face being sprayed with the anti-corrosion coating, improving the neatness of the weld spraying, and improving the problem that the edge area of ​​the weld of the cylindrical battery cell is easily contaminated by the anti-corrosion coating when the anti-corrosion coating is sprayed.

[0011] In some embodiments of the present application, the dip-coated part is an arc-shaped structure, and the arc-shaped structure is used to extend into the annular groove defined by the first end surface and fit with the weld.

[0012] In the above technical solution, the first end face has an annular groove, and the weld is located in the annular groove. Therefore, by setting the dip-coated part as an arc-shaped structure, when the clamping mechanism clamps the cylindrical battery cell into the limiting groove, the arc-shaped mechanism can extend into the annular groove and fit with the weld, so that the weld can be sprayed with anti-corrosion coating.

[0013] In some embodiments of the present application, there is an accommodation gap between the dip-coated part and the arc-shaped concave surface; and / or the arc-shaped concave surface is a circular arc-shaped concave surface, and the axis of the circle where the circular arc-shaped concave surface is located intersects with the top surface.

[0014] In the above technical solution, since the first end face has an annular groove, an annular boss is formed on the outer side of the annular groove. Therefore, by defining an accommodating gap between the dip-coated part and the arc-shaped concave surface, the annular boss can cooperate and extend into the accommodating gap, so that the dip-coated part can extend into the annular groove and fit with the weld, thereby realizing the spraying of anti-corrosion coating on the weld.

[0015] The arc-shaped concave surface is a circular arc-shaped concave surface, and the axis direction of the circle where the circular arc-shaped concave surface is located can form an acute angle with the top surface of the bottom mold. In this way, when the cylindrical battery cell is placed in the limiting groove, the circular arc-shaped concave surface can play a certain supporting and guiding role. The cylindrical battery cell will move toward the direction of the vertical surface under the action of gravity, thereby improving the reliability of the fit between the weld and the dip-coated part, and further helping to improve the accuracy of spraying the anti-corrosion coating at the weld position.

[0016] In some embodiments of the present application, the dip-coated member is a flexible member.

[0017] In the above technical solution, by setting the dip-coated part as a flexible part, the dip-coated part can be squeezed and deformed when it extends into the annular groove, so that the anti-corrosion coating can be evenly coated on the weld. In addition, the wear of the dip-coated part on the first end face can be reduced during the rotation of the cylindrical battery cell, which helps to improve the safety of spraying the anti-corrosion coating on the weld of the cylindrical battery cell.

[0018] In some embodiments of the present application, the number of the spray channels and the number of the spray holes are both multiple, the multiple spray holes are dispersedly arranged on the dip-coated part, and the multiple spray holes are connected to the multiple spray channels in a one-to-one correspondence.

[0019] In the above technical solution, the number of spray channels and spray holes are set to multiple and connected one by one, so that multiple spray holes can be used to simultaneously transport anti-corrosion coatings, thereby further improving the efficiency of spraying anti-corrosion coatings on welds.

[0020] In some embodiments of the present application, the clamping mechanism includes a connecting rod and a plurality of clamping claws connected to the connecting rod, the plurality of clamping claws are arranged at intervals along the circumference of the connecting rod and are used to clamp the cylindrical battery cell.

[0021] In the above technical solution, multiple clamps of the clamping mechanism are used to clamp the outer circumference of the cylindrical battery cell at the same time, so that the cylindrical battery cell can be clamped and moved into the limiting groove. The structure and principle are relatively simple and easy to implement.

[0022] In some embodiments of the present application, the clamping mechanism further includes a driving member, which is connected to the connecting rod and is used to drive the connecting rod to rotate around the axis direction of the connecting rod.

[0023] In the above technical solution, after the multiple claws of the clamping mechanism clamp the cylindrical battery cell, the driving member drives the connecting rod to rotate around its circumferential direction, thereby driving the cylindrical battery cell to rotate, and then continuously spraying the anti-corrosion coating on the weld of its first end face.

[0024] In some embodiments of the present application, the spraying device further includes a feeding mechanism, which is communicated with the spraying channel and is used to transport paint into the spraying channel.

[0025] In the above technical solution, the feeding mechanism can pre-store the coating used for weld anti-corrosion, and by being connected with the spray channel and the spray hole, the anti-corrosion coating can be transported into the spray hole. When it is necessary to spray the weld with anti-corrosion coating, the anti-corrosion coating can be continuously transported, which helps to improve the efficiency of spraying the weld anti-corrosion coating.

[0026] In a second aspect, the present application provides a battery production line, comprising a spraying device as described in any one of the embodiments of the first aspect, wherein the spraying device is used to spray paint onto a weld of a cylindrical battery cell.

[0027] According to the battery production line provided in the present application, since it includes the spraying device described in any one of the embodiments of the first aspect, it has the technical effects of any of the above embodiments, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 A schematic diagram of the structure of a spraying device provided in some embodiments of the present application;

[0030] Figure 2 A schematic diagram of the structure of the base mold provided for some embodiments of the present application.

[0031] The reference numerals are as follows:

[0032] 100, spraying device; 200, cylindrical battery cell; 201, first end surface; 202, welding seam;

[0033] 10. Bottom mold; 11. Top surface; 12. Limiting groove; 121. Arc-shaped concave surface; 122. Vertical surface; 20. Clamping mechanism; 21. Connecting rod; 22. Clamping claw; 23. Driving part; 30. Dipping part; 31. Spraying hole; 40. Accommodating gap. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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).

[0040] 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.

[0041] 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.

[0042] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices 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 battery devices, the market demand is also constantly expanding.

[0043] Battery devices are divided into hard-shell batteries, soft-pack batteries and cylindrical batteries based on their shape. Among them, cylindrical batteries are valued for their advantages such as high volume energy density, simple structure, easy grouping and ease of standardization.

[0044] In the related art, a cylindrical battery cell has a weld at the bottom. Since the structure of the weld is relatively complex, spraying anti-corrosion coating at the weld is difficult and inefficient.

[0045] In order to solve the problem of great difficulty and low efficiency in spraying anti-corrosion coating on the weld at the bottom of a cylindrical battery cell, the present application designs a spraying device, which provides a bottom mold, a dipping piece and a clamping mechanism, and a limiting groove is provided on the bottom mold, the limiting groove has an arcuate concave surface and a vertical surface, the arcuate concave surface is used to adapt to the shape of the outer circumferential surface of the cylindrical battery cell, the vertical surface is used to correspond to the first end surface of the cylindrical battery cell with a weld, and the vertical surface is provided with a spraying channel, the dipping piece is provided on the vertical surface, and is configured to fit with the weld when the clamping mechanism clamps the cylindrical battery cell into the limiting groove, the dipping piece is provided with a spraying hole connected to the spraying channel, the anti-corrosion coating can be sprayed to the weld through the spraying channel and the spraying hole, and the clamping mechanism can drive the cylindrical battery cell to rotate around its axial direction to achieve continuous spraying of the weld, thereby improving the anti-corrosion efficiency of the weld.

[0046] The spraying device disclosed in the embodiment of the present application is suitable for spraying anti-corrosion coating on the welds of cylindrical battery cells, which helps to improve the efficiency of spraying anti-corrosion coating on the welds.

[0047] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a spraying device provided in some embodiments of the present application; Figure 2 The schematic diagram of the structure of the bottom mold provided in some embodiments of the present application. The embodiment of the present application provides a spraying device 100, including: a bottom mold 10, a dipping member 30 and a clamping mechanism 20. Among them, the top surface 11 of the bottom mold 10 is provided with a limiting groove 12, the limiting groove 12 includes an arcuate concave surface 121 and a vertical surface 122 connected to the arcuate concave surface 121, the arcuate concave surface 121 is configured to adapt to the shape of the outer peripheral surface of the cylindrical battery cell 200, the vertical surface 122 is provided with a spraying channel, and is configured to be arranged corresponding to the first end surface 201 of the cylindrical battery cell 200 having a weld 202; the dip-coating part 30 is arranged on the vertical surface 122, the dip-coating part 30 is provided with a spraying hole 31, the spraying hole 31 is connected to the spraying channel, and the dip-coating part 30 is configured to fit with the weld 202; the clamping mechanism 20 is used to clamp the cylindrical battery cell 200, and the clamping mechanism 20 is used to drive the cylindrical battery cell 200 to rotate around the axial direction of the cylindrical battery cell 200.

[0048] Exemplarily, the bottom mold 10 is a boss structure, and the top surface 11 of the bottom mold 10 is a plane.

[0049] For example, the arc-shaped concave surface 121 is formed by cutting a portion of the top surface 11 of the bottom mold 10 using a milling process. The vertical surface 122 may be a vertical surface perpendicular to the top surface 11 .

[0050] Exemplarily, the dip-coated member 30 is disposed on the vertical surface 122 and protrudes from the vertical surface 122 . The dip-coated member 30 may be a complete arc-shaped structure adapted to the weld 202 , or may be a semi-arc-shaped structure.

[0051] Exemplarily, the clamping mechanism 20 may have a plurality of jaws 22, and the plurality of jaws 22 cooperate to clamp the cylindrical battery cell 200. Alternatively, the clamping mechanism 20 may also have a plurality of arc-shaped clamping plates, and the plurality of arc-shaped clamping plates cooperate to clamp the cylindrical battery cell 200. According to the spraying device 100 provided in the present application, a limiting groove 12 is provided on the bottom mold 10, and the limiting groove 12 has an arc-shaped concave surface 121 adapted to the shape of the outer peripheral surface of the cylindrical battery cell 200, and a vertical surface 122 arranged opposite to the first end surface 201 of the cylindrical battery cell 200 having a weld 202, and a spraying channel is provided on the vertical surface 122, and the spraying channel is used to circulate the coating used for corrosion protection of the weld 202, and a dip coating part 30 is provided on the dip coating part 30, and a weld 202 formed on the first end surface 201 of the cylindrical battery cell 200 is formed. 202 is a spray hole 31 for spraying anti-corrosion paint. After the clamping mechanism 20 clamps the cylindrical battery cell 200, the cylindrical battery cell 200 can be moved into the limiting groove 12, and the weld 202 of the cylindrical battery cell 200 is fit with the dip-coated part 30. In addition, the clamping mechanism 20 can also drive the cylindrical battery cell 200 to rotate. During the rotation, the dip-coated part 30 continuously sprays the anti-corrosion paint, thereby continuously spraying the anti-corrosion paint on the weld 202, thereby improving the efficiency of spraying the anti-corrosion paint on the weld 202 of the cylindrical battery cell 200.

[0052] According to some embodiments of the present application, the dip-coated part 30 includes a spraying surface and a first side surface and a second side surface respectively located on opposite sides of the spraying surface, wherein the spraying surface is provided with a spraying hole 31, and the first side surface and the second side surface are sealing surfaces.

[0053] In this embodiment, the spraying surface is a surface of the dip-coated member 30 parallel to the vertical surface 122. The first side surface and the second side surface are connected to opposite sides of the spraying surface and are both arranged to intersect with the spraying surface. The first side surface and the second side surface can form a sealing surface by applying a sealant.

[0054] The spray hole 31 penetrates through the dip coating member 30 and is connected to the spray channel.

[0055] The coated part 30 can only be sprayed with anti-corrosion paint on the weld 202 through the spraying surface. Since the first side surface and the second side surface arranged on both sides of the spraying surface are sealing surfaces, no anti-corrosion paint will be sprayed out from the first side surface and the second side surface, thereby reducing the risk of the first end surface 201 other than the weld 202 being sprayed with anti-corrosion paint, improving the neatness of the spraying of the weld 202, and improving the problem that the edge area of ​​the weld 202 of the cylindrical battery cell 200 is easily contaminated by the anti-corrosion paint when spraying the anti-corrosion paint.

[0056] According to some embodiments of the present application, the dip-coated member 30 is an arc-shaped structure, which is used to extend into the annular groove defined by the first end face 201 and fit with the weld 202 .

[0057] In this embodiment, the first end surface 201 has an annular groove, and the weld 202 is located in the annular groove. The dip-coated member 30 may be a boss structure in an arc shape.

[0058] By setting the coating member 30 as an arc structure, the arc structure is adapted to the shape of the annular groove. When the clamping mechanism 20 clamps the cylindrical battery cell 200 into the limiting groove 12, the arc structure can extend into the annular groove and fit with the weld 202, so that the weld 202 can be sprayed with anti-corrosion coating.

[0059] See also Figure 2 According to some embodiments of the present application, an accommodation gap 40 is provided between the dip-coated member 30 and the arc-shaped concave surface 121 .

[0060] Since the first end face 201 has an annular groove, an annular boss is formed on the outer side of the annular groove. Therefore, by defining a receiving gap 40 between the dip-coated part 30 and the arc-shaped concave surface 121, the annular boss can cooperate and extend into the receiving gap 40, so that the dip-coated part 30 can extend into the annular groove and fit with the weld 202, thereby realizing the spraying of anti-corrosion paint on the weld 202.

[0061] In some embodiments of the present application, a shielding surface is defined between the side of the dip-coated member 30 facing away from the arc-shaped groove and the vertical surface 122 , and the shielding surface is used to shield the area inside the annular groove.

[0062] According to some embodiments of the present application, the arc-shaped concave surface 121 is a circular arc-shaped concave surface 121 , and the axis of the circle where the circular arc-shaped concave surface 121 is located intersects with the top surface 11 .

[0063] Exemplarily, the angle between the axis of the circle where the arc-shaped concave surface 121 is located and the top surface 11 is an acute angle, for example, it can be an angle of 30° or 45°.

[0064] The arc-shaped concave surface 121 is a circular arc-shaped concave surface 121, and the axial direction of the circular arc-shaped concave surface 121 can form an acute angle with the top surface 11 of the bottom mold 10. In this way, when the cylindrical battery cell 200 is placed in the limiting groove 12, the circular arc-shaped concave surface 121 can play a certain supporting and guiding role. The cylindrical battery cell 200 will move toward the direction of the vertical surface 122 under the action of gravity, thereby improving the reliability of the fit between the weld 202 and the dip-coated part 30, and further helping to improve the accuracy of spraying the anti-corrosion coating at the position of the weld 202.

[0065] According to some embodiments of the present application, the dip-coated member 30 is a flexible member.

[0066] For example, the dip-coated member 30 may be a sponge, which has a porous structure and helps to improve the uniformity of the anti-corrosion coating spraying at the weld 202. Alternatively, the dip-coated member 30 may be a rubber member or a silicone member.

[0067] By setting the dip-coated member 30 as a flexible member, the dip-coated member 30 can be squeezed and deformed when it extends into the annular groove, so that the anti-corrosion coating can be evenly coated on the weld 202, and the wear of the dip-coated member 30 on the first end face 201 can be reduced during the rotation of the cylindrical battery cell 200, which helps to improve the safety of spraying the anti-corrosion coating on the weld 202 of the cylindrical battery cell 200.

[0068] See also Figure 2 According to some embodiments of the present application, the number of spray channels and spray holes 31 is multiple, the multiple spray holes 31 are dispersedly arranged on the dip coating part 30, and the multiple spray holes 31 are connected to the multiple spray channels one by one.

[0069] Exemplarily, the number of the spraying channels and the spraying holes 31 may be four, five, six or more.

[0070] The number of spray channels and spray holes 31 is set to be multiple and connected one by one, so that multiple spray holes 31 can be used to simultaneously transport anti-corrosion coatings, thereby further improving the efficiency of spraying anti-corrosion coatings on the weld 202.

[0071] See also Figure 1 According to some embodiments of the present application, the clamping mechanism 20 includes a connecting rod 21 and a plurality of clamping jaws 22 connected to the connecting rod 21 . The plurality of clamping jaws 22 are arranged at intervals along the circumference of the connecting rod 21 and are used to clamp the cylindrical battery cell 200 .

[0072] Exemplarily, there are three clamping jaws 22. Each clamping jaw 22 may include a connecting portion and a clamping portion, one end of the connecting portion is fixedly connected to the connecting rod 21 and is arranged at an angle with the axis of the connecting rod 21, and the clamping portion is rotatably connected to the other end of the connecting portion, for example, the clamping portion and the connecting portion are both provided with axial holes, studs are inserted into the two axial holes to realize rotatable connection between the clamping portion and the connecting portion, and then the clamping portion is rotated to a preset angle and connected to the bolt through a nut, thereby fixing the position of the clamping portion.

[0073] The outer circumferential surface of the cylindrical battery cell 200 is clamped by multiple clamps of the clamping mechanism 20 at the same time, so that the cylindrical battery cell 200 can be clamped and moved into the limiting groove 12. The structure and principle are relatively simple and easy to implement.

[0074] See also Figure 1 According to some embodiments of the present application, the clamping mechanism 20 further includes a driving member 23 , which is connected to the connecting rod 21 and is used to drive the connecting rod 21 to rotate around the axis direction of the connecting rod 21 .

[0075] Exemplarily, the driving member 23 may be an electric motor or a motor. A driving shaft of the electric motor or the motor is fixedly connected to one end of the connecting rod 21.

[0076] After the multiple claws 22 of the clamping mechanism 20 clamp the cylindrical battery cell 200, the driving member 23 drives the connecting rod 21 to rotate around its circumferential direction, thereby driving the cylindrical battery cell 200 to rotate, and then continuously spraying the weld 202 on its first end face 201 with the coating used for weld corrosion protection.

[0077] According to some embodiments of the present application, the spraying device 100 further includes a feeding mechanism, which is connected to the spraying channel and is used to transport paint into the spraying channel.

[0078] In this embodiment, the feeding mechanism may have a first accommodating chamber, in which the coating for weld corrosion protection is stored. The first accommodating chamber is connected to the spraying channel through a pipeline, and the first pumping member provides conveying power.

[0079] In addition, the feeding mechanism may further include a second accommodating chamber, in which a cleaning solvent is stored. The second accommodating chamber may be connected to the spraying channel through a pipeline, and a conveying power may be provided by a second pumping member.

[0080] The feeding mechanism can store the anti-corrosion coating for the weld in advance, and by being connected with the spray channel and the spray hole 31, the anti-corrosion coating can be transported into the spray hole 31. When the anti-corrosion coating needs to be sprayed on the weld 202, the anti-corrosion coating can be continuously transported, which helps to improve the efficiency of spraying the anti-corrosion coating on the weld 202.

[0081] According to some embodiments of the present application, see Figure 1 and Figure 2 The present application provides a spraying device 100, including a bottom mold 10, a dip coating member 30 and a clamping mechanism 20. The top surface 11 of the bottom mold 10 is provided with a limiting groove 12, the limiting groove 12 includes an arc-shaped concave surface 121 and a vertical surface 122 connected to the arc-shaped concave surface 121, the arc-shaped concave surface 121 is configured to be adapted to the shape of the outer peripheral surface of the cylindrical battery cell 200, and the vertical surface 122 is provided with a spraying channel and is configured to be arranged corresponding to the first end surface 201 of the cylindrical battery cell 200 having a weld 202. The dip-coated member 30 is arranged on the vertical surface 122 and protrudes from the vertical surface 122. The dip-coated member 30 includes a sponge body in an arc shape. The side of the sponge body facing away from the vertical surface 122 is a spraying surface, and the opposite two sides adjacent to the spraying surface are sealing surfaces. The spraying surface is provided with a spraying hole 31 connected to the spraying channel, and the spraying surface of the dip-coated member 30 is configured to fit with the weld 202; the clamping mechanism 20 includes a connecting rod 21, a driving member 23 and a plurality of clamping jaws 22, the driving member 23 is connected to one end of the connecting rod 21, and the plurality of clamping jaws 22 are connected to the other end of the connecting rod 21, and are arranged at intervals along the circumference of the connecting rod 21, for cooperatively clamping the cylindrical battery cell 200, and the driving member 23 is used to drive the cylindrical battery cell 200 to rotate around the axial direction of the cylindrical battery cell 200.

[0082] According to some embodiments of the present application, the present application further provides a battery production line, comprising a spraying device 100 as in any one of the above embodiments, the spraying device 100 is used to spray paint onto the weld 202 of the cylindrical battery cell 200 .

[0083] According to the battery production line provided in the present application, since it includes the spraying device 100 of any one of the embodiments of the first aspect, it has the technical effects of any of the above embodiments, which will not be repeated here.

[0084] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A spraying device, characterized in that: include: A bottom mold, wherein a limiting groove is provided on the top surface of the bottom mold, wherein the limiting groove includes an arc-shaped concave surface and a vertical surface connected to the arc-shaped concave surface, wherein the arc-shaped concave surface is configured to be adapted to the shape of the outer peripheral surface of the cylindrical battery cell, and the vertical surface is provided with a spraying channel and is configured to be arranged corresponding to the first end surface of the cylindrical battery cell having a weld; A dip-coated part is arranged on the vertical surface, the dip-coated part is provided with a spraying hole, the spraying hole is communicated with the spraying channel, and the dip-coated part is configured to be fitted with the weld; A clamping mechanism is used to clamp the cylindrical battery cell, and the clamping mechanism is used to drive the cylindrical battery cell to rotate around the axial direction of the cylindrical battery cell.

2. The spraying device according to claim 1, characterized in that: The dip-coated part comprises a spraying surface and a first side surface and a second side surface respectively located at two opposite sides of the spraying surface, wherein the spraying surface is provided with the spraying hole, and the first side surface and the second side surface are sealing surfaces.

3. The spraying device according to claim 1 or 2, characterized in that: The dip-coated part is an arc-shaped structure, and the arc-shaped structure is used to extend into the annular groove defined by the first end surface and fit with the weld.

4. The spraying device according to claim 1 or 2, characterized in that: There is an accommodation gap between the dip-coating member and the arc-shaped concave surface; And / or, the arc-shaped concave surface is a circular arc-shaped concave surface, and the axis of the circle where the circular arc-shaped concave surface is located intersects with the top surface.

5. The spraying device according to claim 1 or 2, characterized in that: The dip-coated part is a flexible part.

6. The spraying device according to claim 1 or 2, characterized in that: The number of the spraying channels and the number of the spraying holes are both multiple, the multiple spraying holes are dispersedly arranged on the dip-coated part, and the multiple spraying holes are connected to the multiple spraying channels in a one-to-one correspondence.

7. The spraying device according to claim 1 or 2, characterized in that: The clamping mechanism comprises a connecting rod and a plurality of clamping claws connected to the connecting rod. The plurality of clamping claws are arranged at intervals along the circumference of the connecting rod and are used to clamp the cylindrical battery cell.

8. The spraying device according to claim 7, characterized in that: The clamping mechanism also includes a driving member, which is connected to the connecting rod and is used to drive the connecting rod to rotate around the axis direction of the connecting rod.

9. The spraying device according to claim 1 or 2, characterized in that: The spraying device also includes a feeding mechanism, which is communicated with the spraying channel and is used to transport paint into the spraying channel.

10. A battery production line, characterized in that: It comprises a spraying device as described in any one of claims 1 to 9, wherein the spraying device is used to spray paint onto the weld of a cylindrical battery cell.

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