Flattening assembly and winding equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a flattening assembly and winding equipment. The flattening assembly is used for flattening the tabs, the flattening assembly comprises a roller passing piece and a flattening piece arranged on the inlet side of the roller passing piece, the flattening piece comprises a first flattening plate and a second flattening plate which are oppositely arranged, the first flattening plate comprises a first flattening part, the second flattening plate comprises a second flattening part, and the first flattening part and the second flattening part are oppositely arranged; at least one of the first flattening part and the second flattening part is used for being in contact with the tab and flattening the tab. According to the embodiment of the invention, the roller passing piece and the flattening piece arranged on the inlet side of the roller passing piece are arranged, the flattening piece comprises the first flattening plate and the second flattening plate which are oppositely arranged, the first flattening plate comprises the first flattening part, and the second flattening plate comprises the second flattening part; therefore, the first flattening part and the second flattening part can shape the tabs from the two sides of the tabs respectively, and the flattening effect on the tabs is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a smoothing component and winding equipment. Background Art

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

[0003] During the production of batteries, the pole pieces need to be wound up. However, during the winding process, the pole ears on the pole pieces are prone to warping up, and the warped pole ears need to be smoothed out using a smoothing assembly.

[0004] The smoothing assembly includes a smoothing plate and a roller. After being smoothed by the smoothing plate, the pole piece passes into one side of the roller and the pole ear is smoothed by the smoothing plate. However, this method has a poor smoothing effect on the pole ear. Utility Model Content

[0005] In view of the above problems, the present application provides a smoothing component and a winding device, which solves the problem of poor smoothing effect of the smoothing component in the prior art.

[0006] The first aspect of the present application provides a smoothing component for smoothing a tab, the smoothing component comprising:

[0007] Roller parts; and

[0008] A smoothing member is arranged on the entrance side of the roller member, and the smoothing member includes a first smoothing plate and a second smoothing plate which are arranged opposite to each other. The first smoothing plate includes a first smoothing portion, and the second smoothing plate includes a second smoothing portion. The first smoothing portion and the second smoothing portion are arranged opposite to each other, and at least one of the first smoothing portion and the second smoothing portion is used to contact with the pole ear and smooth the pole ear.

[0009] The embodiments of the present application are provided with a roller member and a smoothing member arranged on the entrance side of the roller member, wherein the smoothing member includes a first smoothing plate and a second smoothing plate arranged opposite to each other, the first smoothing plate includes a first smoothing portion, the second smoothing plate includes a second smoothing portion, and at least one of the first smoothing portion and the second smoothing portion is used to contact with the pole ear and smooth the pole ear. The first smoothing portion and the second smoothing portion can respectively shape the pole ear from both sides of the pole ear, thereby improving the smoothing effect on the pole ear.

[0010] In some embodiments of the present application, the first smoothing plate also includes a first guide portion, which is connected to an end of the first smoothing portion away from the inlet side; the second smoothing plate also includes a second guide portion, which is connected to an end of the second smoothing portion away from the inlet side; the first guide portion and the second guide portion enclose a accommodating space, and the size of the inlet side of the accommodating space is larger than the size of the outlet side of the accommodating space.

[0011] In the embodiment of the present application, a first guide portion and a second guide portion are provided, wherein the first guide portion and the second guide portion enclose a receiving space, and the size of the inlet side of the receiving space is larger than the size of the outlet side of the receiving space, so that the pole ear can be easily moved into the receiving space, thereby facilitating the shaping of the pole ear.

[0012] In some embodiments of the present application, the first guide portion and the second guide portion are respectively arranged on both sides of the accommodating space along the first direction, at least one of the first guide portion and the second guide portion is an arc plate, and the first direction is perpendicular to the axial direction of the roller member.

[0013] In the embodiment of the present application, the first guide portion and the second guide portion are respectively arranged on both sides of the accommodating space along the first direction, and at least one of the first guide portion and the second guide portion is an arc-shaped plate, wherein the first direction is perpendicular to the axial direction of the roller member. The arc-shaped plate can reduce the probability of vertical collision with the pole ear, which is beneficial to smoothing the pole ear with severe warping.

[0014] In some embodiments of the present application, the first guide portion and the second guide portion are both arc-shaped plates, wherein the first guide portion is tangent to the first smoothing portion, the second guide portion is tangent to the second smoothing portion, and the curvature of the arc-shaped plate is greater than or equal to 90 degrees.

[0015] In the embodiment of the present application, by setting the first guide part and the second guide part as arc-shaped plates, the probability of vertical collision between the first guide part and the second guide part and the pole ear can be reduced, and the pole ear with serious warping can be shaped from both sides of the pole ear to achieve smoothing of the pole ear. In addition, by making the first guide part tangent to the first smoothing part, the second guide part tangent to the second smoothing part, and the curvature of the arc-shaped plate greater than or equal to 90 degrees, the pole ear can smoothly enter the accommodating space and enter the space between the first smoothing part and the second smoothing part.

[0016] In some embodiments of the present application, the sizes of the first caressing plate and the second caressing plate along the second direction are both larger than the size of the pole lug, and the second direction is the axial direction of the roller member.

[0017] In the embodiment of the present application, by making the dimensions of the first smoothing plate and the second smoothing plate along the second direction larger than the dimensions of the pole lug, wherein the second direction is the axial direction of the roller, the first smoothing plate and the second smoothing plate can both shape the entire upper surface and the entire lower surface of the pole lug, so that the pole lug can obtain a better smoothing effect.

[0018] In some embodiments of the present application, the first caressing plate further includes a third guide portion, which is connected to an end of the first caressing plate away from the first guide portion and is used to guide the pole lug to contact the roller member.

[0019] In the embodiment of the present application, by providing a third guide portion connected to the end of the first caressing plate away from the first guide portion, the pole lug can be guided to contact the roller member through the third guide portion, thereby guiding the moving direction of the pole lug.

[0020] In some embodiments of the present application, the third guide portion is an arc-shaped structure, wherein the arc-shaped structure is a concave arc toward the roller member, and the arc-shaped structure is spaced apart from the roller member.

[0021] In an embodiment of the present application, an arc structure is provided in the third guide portion, wherein the arc structure is a concave arc toward the roller surface, and the arc structure is spaced apart from the roller surface. The movement of the pole ear can be guided by the third guide portion, so that the pole ear can smoothly pass through the gap between the third guide portion and the roller member.

[0022] In some embodiments of the present application, the smoothing assembly further includes a pressure roller member, which is disposed on one side of the roller member in a radial direction and is used to press the pole ear onto the roller member.

[0023] In the embodiment of the present application, by arranging a pressure roller on one side of the roller in the radial direction, the pole ear can be pressed onto the roller by the pressure roller, thereby achieving the qualitative measurement of the pole ear and reducing the probability of the pole ear curling up again after being smoothed.

[0024] In some embodiments of the present application, the pressure roller member includes a pressure roller surface, and along the axial direction of the pressure roller member, the size of the pressure roller surface is greater than or equal to the size of the pole lug.

[0025] In the embodiment of the present application, by setting a pressure roller surface, and along the axial direction of the pressure roller, the size of the pressure roller surface is greater than or equal to the size of the pole ear, the pole ear can be shaped, the smoothing effect of the pole ear is increased, and the probability of the pole ear curling up again is reduced.

[0026] The second aspect of the present application proposes a winding device, comprising the smoothing assembly mentioned in the above embodiment, and the smoothing assembly is used to smooth the tab.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[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 smoothing assembly provided in some embodiments of the present application (including a pole piece);

[0030] Figure 2 for Figure 1 The structural schematic diagram of the smoothing component shown in FIG. 1 is in a second viewing angle;

[0031] Figure 3 for Figure 1 A schematic structural diagram of a first smoothing plate of the smoothing assembly shown in ;

[0032] Figure 4 for Figure 1 A schematic structural diagram of a second smoothing plate of the smoothing assembly shown in ;

[0033] Figure 5 A partial structural schematic diagram of a winding device provided for some embodiments of the present application.

[0034] The reference numerals are as follows:

[0035] 100. Smooth the components;

[0036] 10. Roller member; 11. Roller surface; 12. Roller core;

[0037] 20. Smoothing member; 21. First smoothing plate; 211. First guide portion; 212. First smoothing portion; 213. Third guide portion; 214. First fixing portion; 2141. First fixing hole; 22. Second smoothing plate; 221. Second guide portion; 222. Second smoothing portion; 223. Second fixing portion; 2231. Second fixing hole; 23. Accommodating space; 24. Inlet side;

[0038] 30. Pressing roller member; 31. Pressing roller surface; 32. Pressing roller core;

[0039] 200, pole piece; 201, pole ear;

[0040] 300, winding device; 301, bracket; 302, first mounting plate; 303, second mounting plate. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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).

[0047] 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.

[0048] 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.

[0049] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., which are not limited in the embodiments of the present application. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, which are not limited in the embodiments of the present application. The structure in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0050] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0051] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0052] The electrode assembly draws out the current through the positive electrode tab and the negative electrode tab. The positive electrode tab or the negative electrode tab of the electrode assembly is connected to the electrode terminal or the adapter component of the battery cell to draw the current to the outside of the battery cell. In the production process of cylindrical batteries, winding is an indispensable process. In order to enable the winding device to produce high-speed continuous winding, the winding device is usually equipped with more than two winding needles that rotate continuously and automatically. During the continuous production process, the positive electrode separator, positive electrode sheet, negative electrode separator and negative electrode sheet of the battery are stacked and wound into a cylindrical electrode assembly in sequence, and finally a cylindrical battery is formed.

[0053] During the production process of battery cells, the pole pieces need to be wound up. However, during the winding process, the pole ears on the pole pieces are prone to warping up, and the warped pole ears need to be smoothed out using a smoothing assembly.

[0054] The smoothing assembly includes a smoothing plate and a roller. After being smoothed by the smoothing plate, the pole piece passes into one side of the roller and the pole ear is smoothed by the smoothing plate. However, this method has a poor smoothing effect on the pole ear.

[0055] Therefore, an embodiment of the present application proposes a smoothing assembly, wherein the smoothing member includes a first smoothing plate and a second smoothing plate that are relatively arranged, the first smoothing plate includes a first smoothing portion, the second smoothing plate includes a second smoothing portion, the first smoothing portion and the second smoothing portion are relatively arranged, at least one of the first smoothing portion and the second smoothing portion is used to contact the pole ear and smooth the pole ear, and the pole ear can be smoothed from both sides of the pole ear, thereby improving the smoothing effect of the pole ear.

[0056] The smoothing component in the embodiment of the present application can be used in a winding device, and can also be used in other scenarios where smoothing is required.

[0057] The structure of the smoothing component of the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0058] The first aspect of the present application provides a smoothing component 100, such as Figures 1 to 4 As shown, the smoothing assembly 100 is used to smooth the pole lug 201. The smoothing assembly 100 includes a roller member 10 and a smoothing member 20 arranged on the inlet side 24 of the roller member 10. The smoothing member 20 includes a first smoothing plate 21 and a second smoothing plate 22 arranged opposite to each other. The first smoothing plate 21 includes a first smoothing portion 212, and the second smoothing plate 22 includes a second smoothing portion 222. The first smoothing portion 212 and the second smoothing portion 222 are arranged opposite to each other. At least one of the first smoothing portion 212 and the second smoothing portion 222 is used to contact with the pole lug 201 and smooth the pole lug 201.

[0059] It should be noted that the roller member 10 is a cylindrical structure, and the roller member 10 includes a roller surface 11 and a roller core 12, wherein the roller surface 11 is rotatably arranged on the outer surface of the roller core 12, and the roller core 12 is fixed and can be fixed on other components of the winding device 300.

[0060] In addition, if Figure 1 As shown, the first smoothing portion 212 and the second smoothing portion 222 are both arranged along the XX direction. At this time, the first smoothing portion 212 and the second smoothing portion 222 are arranged in parallel and spaced apart. The XX direction here can be a horizontal direction or an inclined direction. The XX direction is usually perpendicular or approximately perpendicular to the axial direction of the roller member 10.

[0061] The inlet side 24 is set relative to the rotation direction of the roller 10. Figure 1 In the embodiment, the roller member 10 rotates counterclockwise. At this time, the pole piece 200 enters the inlet side 24 from the right side in the XX direction.

[0062] Figure 1 The YY direction in the figure may be the height direction of the smoothing assembly 100, which is usually perpendicular or approximately perpendicular to the axial direction of the roller member 10. Figure 2 The ZZ direction in .

[0063] The embodiment of the present application is provided with a roller member 10 and a smoothing member 20 provided on the inlet side 24 of the roller member 10, wherein the smoothing member 20 includes a first smoothing plate 21 and a second smoothing plate 22 which are arranged opposite to each other, the first smoothing plate 21 includes a first smoothing portion 212, the second smoothing plate 22 includes a second smoothing portion 222, at least one of the first smoothing portion 212 and the second smoothing portion 222 is used to contact with the pole ear 201 and smooth the pole ear 201, so that the first smoothing portion 212 and the second smoothing portion 222 can respectively shape the pole ear 201 from both sides of the pole ear 201, thereby improving the smoothing effect on the pole ear 201.

[0064] Alternatively, if Figure 1 As shown, the first smoothing plate 21 also includes a first guide portion 211, which is connected to an end of the first smoothing portion 212 away from the inlet side 24; the second smoothing plate 22 also includes a second guide portion 221, which is connected to an end of the second smoothing portion 222 away from the inlet side 24; the first guide portion 211 and the second guide portion 221 enclose a accommodating space 23, and the size of the inlet side of the accommodating space 23 is larger than the size of the outlet side of the accommodating space 23.

[0065] It should be noted that the first smoothing plate 21 is an integrated structure, and the second smoothing plate 22 is also an integrated structure, that is, the first guide portion 211 and the first smoothing portion 212 are an integrated structure, and the second guide portion 221 and the second smoothing portion 222 are an integrated structure, which can facilitate the processing of the first smoothing plate 21 and the second smoothing plate 22 and simplify the production process of the smoothing assembly 100.

[0066] Here, the first guide portion 211 is located on the right side of the first smoothing portion 212 along the XX direction, and the second guide portion 221 is located on the right side of the second smoothing portion 222 along the XX direction. The pole piece 200 enters the accommodating space 23 from the right side, wherein the inlet side of the accommodating space 23 is located on the right side of the outlet side.

[0067] In this embodiment, the first guide portion 211 and the second guide portion 221 can form a trumpet-shaped structure, or a trapezoidal accommodating space 23 or an accommodating space 23 of other shapes, both of which can allow the pole piece 200 to enter the accommodating space 23 and move leftward along the XX direction.

[0068] In the embodiment of the present application, a first guide portion 211 and a second guide portion 221 are provided, wherein the first guide portion 211 and the second guide portion 221 enclose a receiving space 23, and the size of the inlet side of the receiving space 23 is larger than the size of the outlet side of the receiving space 23, so that the pole ear 201 can be conveniently moved into the receiving space 23, thereby facilitating the shaping of the pole ear 201.

[0069] Alternatively, if Figure 1 and Figure 2 As shown, the first guide portion 211 and the second guide portion 221 are respectively disposed on both sides of the accommodating space 23 along the first direction, at least one of the first guide portion 211 and the second guide portion 221 is an arc plate, and the first direction is perpendicular to the axial direction of the roller member 10 .

[0070] In the embodiment of the present application, the first guide portion 211 and the second guide portion 221 are respectively arranged on both sides of the accommodating space 23 along the first direction, and at least one of the first guide portion 211 and the second guide portion 221 is an arc-shaped plate, wherein the first direction is perpendicular to the axial direction of the roller member 10. The arc-shaped plate can reduce the probability of vertical collision with the pole ear 201, which is beneficial to smoothing the pole ear 201 that is severely warped.

[0071] Alternatively, if Figure 1 , Figure 3 and Figure 4 As shown, the first guide portion 211 and the second guide portion 221 are both arc-shaped plates, wherein the first guide portion 211 is tangent to the first smoothing portion 212, the second guide portion 221 is tangent to the second smoothing portion 222, and the curvature of the arc-shaped plate is greater than or equal to 90 degrees.

[0072] It should be noted that the first guide portion 211 is tangent to the first smoothing portion 212, and the second guide portion 221 is tangent to the second smoothing portion 222. Therefore, the maximum opening of the accommodating space 23 between the first guide portion 211 and the second guide portion 221 is the state where the curvature of the first guide portion 211 is 90 degrees and the curvature of the second guide portion 221 is 90 degrees. Therefore, in order to save materials, the curvatures of the first guide portion 211 and the second guide portion 221 can be set to 90 degrees. Of course, it is also feasible to choose 95 degrees or other angles.

[0073] It should be noted that the curvature of the curved plate here can also be less than 90 degrees, such as 80 degrees or other angles, which can also play a guiding role.

[0074] In addition, the first guide portion 211 and the second guide portion 221 are symmetrically disposed on both sides of the accommodating space 23 , and ends of the first guide portion 211 and the second guide portion 221 are in a flush state.

[0075] The embodiment of the present application can reduce the probability of vertical collision between the first guide portion 211 and the second guide portion 221 and the pole ear 201 by configuring the first guide portion 211 and the second guide portion 221 as arc-shaped plates, and can reshape the pole ear 201 that is severely warped from both sides of the pole ear 201 to smooth the pole ear 201.

[0076] In addition, by making the first guide portion 211 tangent to the first smoothing portion 212 , the second guide portion 221 tangent to the second smoothing portion 222 , and the curvature of the arc plate is greater than or equal to 90 degrees, the tab 201 can smoothly enter the accommodating space 23 and enter the space between the first smoothing portion 212 and the second smoothing portion 222 .

[0077] Optionally, the dimensions of the first and second smoothing plates 21 and 22 along the second direction are both larger than the dimensions of the pole tab 201, and the second direction is the axial direction of the roller member 10. In other words, the dimensions of the first and second smoothing plates 21 and 22 along the ZZ direction are both larger than the dimensions of the pole tab 201 along the ZZ direction, so that the first and second smoothing plates 21 and 22 can respectively smooth the entire upper and lower surfaces of the pole tab 201, wherein the upper and lower surfaces are respectively two surfaces of the pole tab 201 along the YY direction, and are the surfaces that need to be smoothed.

[0078] Specifically, the size of the first caressing plate 21 along the ZZ direction is 4 mm or more than that of the tab 201 , that is, both ends of the first caressing plate 21 along the ZZ direction protrude 2 mm or about 2 mm from the end of the tab 201 .

[0079] In the embodiment of the present application, by making the dimensions of the first smoothing plate 21 and the second smoothing plate 22 along the second direction larger than the dimension of the pole lug 201, wherein the second direction is the axial direction of the roller member 10, the first smoothing plate 21 and the second smoothing plate 22 can both shape the entire upper surface and the entire lower surface of the pole lug 201, so that the pole lug 201 can obtain a better smoothing effect.

[0080] Alternatively, if Figure 1 and Figure 3 As shown, the first caressing plate 21 further includes a third guide portion 213 , which is connected to an end of the first caressing plate 21 away from the first guide portion 211 and is used to guide the pole lug 201 to contact the roller member 10 .

[0081] The third guide portion 213 here may be an arc-shaped plate structure or a flat plate structure to guide the pole tab 201 onto the surface of the roller 10 .

[0082] In the embodiment of the present application, by providing a third guide portion 213 connected to the end of the first smoothing plate 21 away from the first guide portion 211 , the pole tab 201 can be guided to contact the roller member 10 through the third guide portion 213 , thereby guiding the moving direction of the pole tab 201 .

[0083] Optionally, continue to refer to Figure 1 As shown, the third guide portion 213 is an arc-shaped structure, wherein the arc-shaped structure is a concave arc toward the roller member 10 , and the arc-shaped structure is spaced apart from the roller member 10 .

[0084] In the embodiment of the present application, the third guide portion 213 is provided with an arc structure, wherein the arc structure is a concave arc toward the roller surface 11, and the arc structure is spaced apart from the roller surface 11. The movement of the pole ear 201 can be guided by the third guide portion 213, so that the pole ear 201 can smoothly pass through the gap between the third guide portion 213 and the roller member 10.

[0085] Alternatively, if Figure 1 As shown, the smoothing assembly 100 further includes a pressing roller 30, which is disposed on one side of the roller 10 in the radial direction and is used to press the pole ear 201 onto the roller 10. Figure 1 In the embodiment, the pressure roller member 30 and the roller member 10 are arranged side by side, and the pressure roller member 30 is located on the left side of the roller member 10 along the XX direction, so that when the pole ear 201 passes through the surface of the roller member 10, the pressure roller member 30 presses the pole ear 201 on the circumferential side of the roller member 10. The circumferential side of the roller member 10 is also the roller surface 11.

[0086] In the embodiment of the present application, by setting a pressure roller member 30 on one side of the roller member 10 in the radial direction, the pole lug 201 can be pressed onto the roller member 10 by the pressure roller member 30 to achieve shaping of the pole lug 201 and reduce the probability of the pole lug 201 curling up again after being smoothed.

[0087] Alternatively, if Figure 1 and Figure 2 As shown, the roller member 30 includes a roller surface 31. Along the axial direction of the roller member 30, the size of the roller surface 31 is greater than or equal to the size of the pole lug 201. The roller surface 31 is a rotatable structure, and the rotation direction of the roller surface 31 is opposite to the rotation direction of the roller surface 11. Through the rotation of the roller surface 31 and the roller surface 11, the pole lug 201 is pressed on the surface of the roller surface 11.

[0088] Specifically, both ends of the roller surface 31 along the axial direction of the roller member 30 protrude from the end of the pole lug 201 by 1 mm or more, and do not contact the coating area of ​​the pole piece 200, and will not affect the coating.

[0089] Optionally, the pressure roller member 30 further includes a pressure roller core 32 , and the pressure roller surface 31 is rotatably disposed on the circumferential outer side of the pressure roller core 32 , wherein the pressure roller core 32 is also a fixed structure.

[0090] In the embodiment of the present application, by setting a pressure roller surface 31, and along the axial direction of the pressure roller member 30, the size of the pressure roller surface 31 is greater than or equal to the size of the pole lug 201, so that the pole lug 201 can be shaped, the smoothing effect of the pole lug 201 is increased, and the probability of the pole lug 201 curling up again is reduced.

[0091] It should be noted that, in order to achieve fixed installation of the first smoothing plate 21, the first smoothing plate 21 also includes a first fixing portion 214, and a first fixing hole 2141 is provided on the first fixing portion 214. The first fixing portion 214 can be fixed to the winding device 300 by passing through the first fixing hole 2141 with a screw or other connecting member to achieve the installation of the first smoothing plate 21.

[0092] The first fixing portion 214 here can be a plate-like structure, perpendicular to the first smoothing portion 212, or can be set as an L-shaped plate-like structure, wherein a portion extends along the width direction of the first smoothing portion 212 and another portion is perpendicular to the first smoothing portion 212. Figure 2 In the embodiment, the first fixing portion 214 is an L-shaped structure.

[0093] The number of the first fixing holes 2141 can be one or more. Figure 2 In the embodiment, the number of the first fixing holes 2141 is two.

[0094] Similarly, in order to achieve fixed installation of the second smoothing plate 22, the second smoothing plate 22 also includes a second fixing portion 223, and a second fixing hole 2231 is provided on the second fixing portion 223. The second fixing portion 223 can be fixed to the winding device 300 by passing through the second fixing hole 2231 with a connecting piece such as a screw, so as to achieve the installation of the second smoothing plate 22.

[0095] The number of the second fixing holes 2231 can be one or more. Figure 3 In the embodiment, the number of the second fixing holes 2231 is two.

[0096] When the pole piece 200 enters the smoothing assembly 100, it first enters the accommodation space 23 between the first guide portion 211 and the second guide portion 221, and then enters between the pressure roller member 30 and the roller member 10 as the roller member 10 rotates. In this way, the first guide portion 211, the second guide portion 221 and the pressure roller member 30 can respectively have a pre-guiding and guiding effect on the pole tab 201, which can more effectively prevent the pole tab 201 on the pole piece 200 from wrinkling, making the pole tab 201 smoother.

[0097] The second aspect of the present application proposes a winding device 300, such as Figure 5 As shown, it includes the smoothing assembly 100 mentioned in the above embodiment, and the smoothing assembly 100 is used to smooth the tab 201.

[0098] It should be noted that Figure 5 It is a partial structural diagram of the winding device 300. The winding device 300 also includes components such as a winding needle, which are common components in the prior art and will not be described in detail in this application.

[0099] In order to realize the installation and fixation of the first caressing plate 21 and the second mounting plate 303, the winding device 300 further includes a bracket 301, a first mounting plate 302 and a second mounting plate 303, wherein the bracket 301 is connected to the second mounting plate 303, and the pressure roller core 32 of the pressure roller member 30 is fixed on the first mounting plate 302. The pressure roller core 32 is installed on the first mounting plate 302, and both the first caressing plate 21 and the second caressing plate 22 can be installed on the first mounting plate 302.

[0100] There are two first mounting plates 302 and two second mounting plates 303, wherein the first mounting plates 302 are symmetrically arranged on the roller core 12 and located on both axial sides of the roller surface 11. The second mounting plates 303 are symmetrically arranged on the pressure roller core 32 and located on both axial sides of the pressure roller surface 31.

[0101] It is understandable that the winding device 300 is a relatively complex structure, and the first mounting plate 302 and the bracket 301 can be fixed on other components of the winding device 300. Considering that this is irrelevant to the improvement points of the present application, it will not be introduced here.

[0102] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0103] An embodiment of the present application provides a smoothing assembly 100 for smoothing a pole lug 201. The smoothing assembly 100 includes a roller member 10 and a smoothing member 20 disposed on an inlet side 24 of the roller member 10. The smoothing member 20 includes a first smoothing plate 21 and a second smoothing plate 22 that are relatively arranged. The first smoothing plate 21 includes a first smoothing portion 212, and the second smoothing plate 22 includes a second smoothing portion 222. The first smoothing portion 212 and the second smoothing portion 222 are relatively arranged. At least one of the first smoothing portion 212 and the second smoothing portion 222 is used to contact with the pole lug 201 and smooth the pole lug 201.

[0104] Furthermore, the first smoothing plate 21 further includes a first guide portion 211, and the first guide portion 211 is connected to an end of the first smoothing portion 212 away from the inlet side 24;

[0105] The second smoothing plate 22 further includes a second guide portion 221, and the second guide portion 221 is connected to an end of the second smoothing portion 222 away from the inlet side 24;

[0106] The first guide portion 211 and the second guide portion 221 enclose an accommodation space 23 , and a size of an inlet side of the accommodation space 23 is greater than a size of an outlet side of the accommodation space 23 .

[0107] Furthermore, the first guide portion 211 and the second guide portion 221 are respectively disposed on both sides of the accommodating space 23 along the first direction, at least one of the first guide portion 211 and the second guide portion 221 is an arc plate, and the first direction is perpendicular to the axial direction of the roller member 10 .

[0108] Furthermore, the first guide portion 211 and the second guide portion 221 are both arc-shaped plates, wherein the first guide portion 211 is tangent to the first smoothing portion 212, the second guide portion 221 is tangent to the second smoothing portion 222, and the curvature of the arc-shaped plate is greater than or equal to 90 degrees.

[0109] Furthermore, the dimensions of the first and second caressing plates 21 and 22 along the second direction are both larger than the dimensions of the pole lug 201 , and the second direction is the axial direction of the roller member 10 .

[0110] Furthermore, the first caressing plate 21 further includes a third guide portion 213 , which is connected to an end of the first caressing plate 21 away from the first guide portion 211 and is used to guide the pole tab 201 to contact the roller member 10 .

[0111] Furthermore, the third guide portion 213 is an arc-shaped structure, wherein the arc-shaped structure is a concave arc toward the roller member 10 , and the arc-shaped structure is spaced apart from the roller member 10 .

[0112] Furthermore, the smoothing assembly 100 further includes a pressure roller member 30 , which is disposed on one side of the roller member 10 in the radial direction and is used to press the pole lug 201 onto the roller member 10 .

[0113] Furthermore, the pressure roller member 30 includes a pressure roller surface 31 . Along the axial direction of the pressure roller member 30 , the size of the pressure roller surface 31 is greater than or equal to the size of the pole lug 201 .

[0114] 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 smoothing component for smoothing a tab, characterized in that: The smoothing component comprises: Roller parts; and A smoothing member is arranged on the entrance side of the roller member, and the smoothing member includes a first smoothing plate and a second smoothing plate which are arranged opposite to each other, the first smoothing plate includes a first smoothing portion, the second smoothing plate includes a second smoothing portion, the first smoothing portion and the second smoothing portion are arranged opposite to each other, and at least one of the first smoothing portion and the second smoothing portion is used to contact with the pole ear and smooth the pole ear.

2. The smoothing assembly according to claim 1, characterized in that: The first smoothing plate further comprises a first guide portion, the first guide portion being connected to an end of the first smoothing portion away from the inlet side; The second smoothing plate further includes a second guide portion, the second guide portion being connected to an end of the second smoothing portion away from the inlet side; The first guide portion and the second guide portion enclose a containing space, and a size of an inlet side of the containing space is larger than a size of an outlet side of the containing space.

3. The smoothing assembly according to claim 2, characterized in that: The first guide portion and the second guide portion are respectively arranged at two sides of the accommodating space along a first direction, at least one of the first guide portion and the second guide portion is an arc-shaped plate, and the first direction is perpendicular to the axial direction of the roller member.

4. The smoothing assembly according to claim 3, characterized in that: The first guide portion and the second guide portion are both arc-shaped plates, wherein the first guide portion is tangent to the first smoothing portion, the second guide portion is tangent to the second smoothing portion, and the curvature of the arc-shaped plate is greater than or equal to 90 degrees.

5. The smoothing assembly according to claim 2, characterized in that: The dimensions of the first and second caressing plates along a second direction are both larger than the dimensions of the pole lugs, and the second direction is the axial direction of the roller member.

6. The smoothing assembly according to claim 2, characterized in that: The first caressing plate also includes: A third guide portion is connected to an end of the first caressing plate away from the first guide portion and is used for guiding the pole lug to contact the roller member.

7. The smoothing assembly according to claim 6, characterized in that The third guide portion is an arc-shaped structure, wherein the arc-shaped structure is a concave arc toward the roller member, and the arc-shaped structure is spaced apart from the roller member.

8. The smoothing assembly according to any one of claims 1 to 7, characterized in that: The smoothing assembly further comprises a pressure roller member, which is arranged on one side of the roller member in the radial direction and is used for pressing the pole ear onto the roller member.

9. The smoothing assembly according to claim 8, characterized in that The pressure roller member comprises a pressure roller surface, and along the axial direction of the pressure roller member, the size of the pressure roller surface is greater than or equal to the size of the pole lug.

10. A winding device, characterized in that: It comprises a smoothing assembly as claimed in any one of claims 1 to 9, wherein the smoothing assembly is used for smoothing the tab.

Images