Pole lug flattening device and pole piece conveying equipment
By using sliding rods and smoothing structural members in the extreme ear smoothing device to smooth the extreme ear, the problems of warping, crescent and folding during the transmission process are solved, and the finished product quality of the extreme ear is improved.
Patent Information
- Application Number
- CN202420022898.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-01-04
AI Technical Summary
In the manufacturing process of lithium batteries and energy storage battery electrodes, the electrode ears are prone to quality problems such as warping, crescent moons, and folding during transmission, which affects the quality of the finished product.
Design an extreme ear smoothing device, including a sliding rod and a smoothing structure member, the sliding rod is arranged outside the roller, and the smoothing structure member has an adjustable smoothing contact surface, a guide section and a smoothing section for use in the polarity. During the transmission of the film, smooth the pole ears to avoid warping and folding.
It effectively improves the finished product quality of the electrode sheet, and reduces the warping and folding of the electrode ears through stable and smooth smoothing operation, and improves the product yield.
Smart Images
Figure CN222312265U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of battery pole piece production, and in particular to a pole tab smoothing device and a pole piece transmission equipment. Background Art
[0002] In the manufacturing process of lithium batteries and energy storage battery pole pieces, the battery slurry is usually first coated on the current collector to form a large roll, and then the large roll is cut into single film area rolls, and finally the single film area rolls are die-cut and rolled into small rolls. After die-cutting and slitting, the positive and negative pole pieces are wound to form bare cells. However, in the die-cutting, gluing, winding and other processes, the pole pieces are easily prone to quality problems such as ear bending, crescent marks, and folding when transmitted by rollers. Utility Model Content
[0003] In view of the above problems, the present application provides a pole tab smoothing device and a pole piece transmission device, which can perform pole tab smoothing operations on pole pieces being transmitted by rollers, so as to improve the product yield of the pole pieces.
[0004] In an embodiment of the present application, a tab smoothing device is provided, comprising a sliding rod and a smoothing structure, wherein the sliding rod is arranged outside the cylinder surface of a roller, the smoothing structure is arranged on the sliding rod, and the relative position of the smoothing structure on the sliding rod is adjustable;
[0005] The smoothing structure is provided with a smoothing contact surface facing the roller, and a guide section and a smoothing section are sequentially provided on the smoothing contact surface along the conveying direction of the pole piece on the roller; the relative distance between the guide section and the pole piece gradually decreases, and a first preset gap is formed between the smoothing section and the roller surface, and the first preset gap can allow the pole ear on the pole piece to pass through.
[0006] In the embodiment scheme of the present application, by arranging the sliding rod on the outside of the drum surface of the roller, it is possible to facilitate the arrangement of the smoothing structure, and limit the relative distance between the smoothing structure and the drum surface, so that the smoothing structure can operate more stably; and by arranging the guide section and the smoothing section on the smoothing contact surface, the guide section can facilitate the orderly entry of the pole ear and improve the smoothness; the smoothing section can be used to smooth the pole ear to avoid warping, folding and other problems of the pole ear during transmission, thereby improving the molding quality of the pole ear.
[0007] In some embodiments, the height of the first preset gap is 1-2 mm greater than the thickness of the tab.
[0008] In the embodiment of the present application, by designing the interval between the first preset gap and the pole lug, the smoothing effect of the smoothing structure on the pole lug can be improved.
[0009] In some embodiments, the smoothing contact surface is located outside the pole piece, and a second preset gap is formed between the smoothing contact surface and the pole piece;
[0010] The second preset gap is between 1-2 mm.
[0011] In the embodiment of the present application, by designing the setting position of the smoothing contact surface, the smoothing structure can avoid the pole piece during application and only perform the smoothing operation on the pole ear.
[0012] In some embodiments, the smoothing structure is provided with a through hole, and the sliding rod is inserted into the through hole;
[0013] An anti-rotation structure is arranged between the smoothing structure and the sliding rod.
[0014] In the embodiment of the present application, by providing the anti-rotation structure, the smoothing structure can be more stably arranged on the sliding rod, so that the smoothing structure can maintain a distance from the cylinder surface of the roller.
[0015] In some embodiments, the cross-section of the sliding rod is circular, the sliding rod includes a first sliding rod and a second sliding rod, and the smoothing structure is provided with a first through hole and a second through hole corresponding to the first sliding rod and the second sliding rod;
[0016] Alternatively, the cross-sectional shape of the sliding rod is elliptical or polygonal, and the shape of the through hole is adapted to the cross-sectional shape of the sliding rod.
[0017] In the embodiment of the present application, when the cross-sectional shape of the sliding rod is circular, multiple sliding rods can be provided to prevent the smoothing structure from rotating; in addition, the cross-sectional shape of the sliding rod can also be set to other shapes to limit the rotation of the smoothing structure.
[0018] In some embodiments, an auxiliary sliding structure is provided between the smoothing structure and the sliding rod.
[0019] In the embodiment of the present application, by providing the auxiliary sliding structure, the position movement of the smoothing structure on the sliding rod can be facilitated, and the accuracy of position adjustment can be improved.
[0020] In some embodiments, a plurality of positioning handles are provided on the smoothing structure, and the positioning handles can be moved to contact with or be separated from the sliding rod.
[0021] In the embodiment of the present application, the positioning handle is provided to achieve mutual connection and fixation between the smoothing structure and the sliding rod.
[0022] In some embodiments, the pole lugs are disposed on both sides of the pole piece, and the smoothing structure is disposed corresponding to the pole lugs on both sides of the pole piece respectively;
[0023] The relative distance between the two smoothing structural members is greater than the width of the pole piece.
[0024] In the embodiment of the present application, the number of the smoothing structural parts is designed so that the smoothing device can be applied to more application scenarios.
[0025] In some embodiments, mounting plates are connected to both ends of the sliding rod, and the mounting plates are mounted on the roller shaft of the roller.
[0026] In the embodiment of the present application, by setting up the mounting plate and connecting the sliding rod and the roller shaft to the mounting plate, the relative distance between the sliding rod and the roller surface can be better regulated.
[0027] In addition, an embodiment of the present application also provides a pole piece transmission device, including a plurality of rollers, at least one of which is provided with the pole ear smoothing device as described above.
[0028] In the embodiment scheme of the present application, by applying the pole ear smoothing device on the pole piece transmission equipment, the pole ear on the pole piece can be smoothed during the transmission process of the pole piece to avoid quality problems such as warping and folding of the pole ear, thereby improving the product quality of the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] 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:
[0030] Figure 1 This is a schematic diagram of the structure of a tab smoothing device according to some embodiments of the present application.
[0031] Figure 2 This is a schematic diagram of the top view of the structure of the tab smoothing device in some embodiments of the present application.
[0032] Figure 3 This is a schematic side view of the structure of a tab smoothing device according to some embodiments of the present application.
[0033] Some of the reference numerals in the specific implementation manner are as follows:
[0034] 1-sliding rod, 11-first sliding rod, 12-second sliding rod;
[0035] 2-smoothing structural member, 21-smoothing contact surface, 211-guiding section, 212-smoothing section, 22-through hole, 221-first through hole, 222-second through hole, 23-positioning handle;
[0036] 3- roller, 31- roller shaft;
[0037] 4-pole piece, 41-ear;
[0038] 5-mounting plate, 51-upper mounting plate, 52-lower mounting plate. DETAILED DESCRIPTION
[0039] 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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).
[0044] 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.
[0045] At present, with the widespread application of lithium batteries and other power or energy storage batteries, the production capacity of battery cells, as an important component of batteries, has gradually increased. Bare battery cells are usually formed by winding pole pieces, and pole pieces need to go through coating, die cutting, gluing and other processes before winding. During the transmission of pole pieces, due to the influence of factors such as the roller wrap angle, the pole ears on the pole pieces are prone to warping, crescents, folding, etc., thus affecting the quality of the final finished product of the pole pieces.
[0046] In view of the above technical problems, the present embodiment mainly provides a pole tab smoothing device and a pole piece transmission device, which can perform pole tab smoothing operations on pole pieces being transmitted by rollers, so as to improve the product yield of pole pieces.
[0047] like Figure 1-3 As shown, a pole lug smoothing device provided according to some embodiments of the present application includes a sliding rod 1 and a smoothing structure 2, wherein the sliding rod 1 is arranged on the outer side of the drum surface of a roller 3, and the smoothing structure 2 is provided with a smoothing contact surface 21 facing the roller 3, and the pole lug 41 of the pole piece 4 passing on the roller 3 is smoothed through the smoothing contact surface 21.
[0048] In some embodiments, the smoothing structure 2 is arranged on the sliding rod 1, and the relative position of the smoothing structure 2 on the sliding rod 1 is adjustable; thereby, the setting position of the smoothing structure 2 can be adjusted according to the pole pieces 4 of different sizes, specifications, and models, thereby improving the applicability of the smoothing structure 2.
[0049] In some embodiments, Figure 3 As shown, along the conveying direction of the pole piece 4 on the roller 3, a guide section 211 and a smoothing section 212 are sequentially arranged on the smoothing contact surface 21; the relative distance between the guide section 211 and the pole piece 4 gradually decreases, and a first preset gap is formed between the smoothing section 212 and the drum surface of the roller 3, and the first preset gap can allow the pole ear 41 on the pole piece 4 to pass through.
[0050] In some embodiments, the smoothing structure 2 may be formed as an integral structure, such as by casting, 3D printing, or machining.
[0051] By arranging the sliding rod 1 on the outside of the drum surface of the roller 3, it is convenient to install the smoothing structure 2, and it is convenient to limit the relative distance between the smoothing structure 2 and the drum surface, so that the smoothing structure 2 can operate more stably; and by arranging the guide section 211 and the smoothing section 212 on the smoothing contact surface 21, wherein the guide section 211 can facilitate the orderly entry of the pole ear 41, avoid rigid contact between the smoothing structure 2 and the pole ear 41, and cause damage to the pole ear 41 or the pole piece 4, thereby improving the smoothness of the smoothing operation; the smoothing section 212 can be used to perform smoothing operations on the pole ear 41, so as to avoid warping, folding and other problems of the pole ear 41 during the transmission process, so as to improve the molding quality of the pole ear 41.
[0052] As one application example, the sliding rod 1 and the smoothing structure 2 can be arranged above the roller 3, the pole piece 4 passes through the drum surface above the roller 3, and the pole ear 41 passes through the first preset gap formed between the smoothing structure 2 and the drum surface. Figure 1-3 shown.
[0053] In some embodiments, the height of the first preset gap is 1-2 mm greater than the thickness of the tab 41. For example, when the tab 41 passes through the drum surface above the roller 3, the bottom surface of the tab 41 is in contact with the drum surface, and at this time, the distance between the smoothing section 212 and the top end surface of the tab 41 is between 1-2 mm.
[0054] By designing the interval between the first preset gap and the tab 41, the smoothing effect of the smoothing structure 2 on the tab 41 can be improved. Compared with the conventional smoothing method using a brush, the present embodiment has better fatigue resistance and a more stable and reliable smoothing effect.
[0055] As an example of one application, Figure 2 As shown, when the smoothing structure 2 is performing a smoothing operation, the smoothing contact surface 21 arranged thereon is located on the outside of the pole piece 4; at this time, contact between the smoothing contact surface 21 and the pole piece 4 can be avoided, thereby avoiding scratches or broken strips of the pole piece 4, thereby improving application reliability.
[0056] In some embodiments, a second preset gap is formed between the smoothed contact surface 21 and the pole piece 4, and the second preset gap can be set between 1-2 mm; for example, Figure 2 As shown, the second preset gap is the distance between the side of the smoothing structure 2 and the side of the pole piece 4.
[0057] By designing the setting position of the smoothing contact surface 21, the smoothing structure 2 can avoid the pole piece 4 during application, and only perform a smoothing operation on the pole ear 41, resulting in a better smoothing effect.
[0058] As one application example, a through hole 22 is provided on the smoothing structure 2, and the sliding rod 1 is inserted into the through hole 22; an anti-rotation structure is provided between the smoothing structure 2 and the sliding rod 1.
[0059] By providing the anti-rotation structure, the smoothing structure 2 can be more stably arranged on the sliding rod 1 , so that the smoothing structure 2 can maintain a distance from the cylinder surface of the roller 3 .
[0060] In some embodiments, Figure 1-3 As shown, the cross-sectional shape of the sliding rod 1 is circular, and the sliding rod 1 includes a first sliding rod 11 and a second sliding rod 12. The smoothing structure 2 is provided with a first through hole 221 and a second through hole 222 corresponding to the first sliding rod 11 and the second sliding rod 12. The first sliding rod 11 and the second sliding rod 12 are respectively inserted into the first through hole 221 and the second through hole 222.
[0061] By setting the first slide bar 11 and the second slide bar 12, and setting the corresponding first through hole 221 and the second through hole 222 on the smoothing structure 2, after the first slide bar 11 and the second slide bar 12 are respectively passed through the first through hole 221 and the second through hole 222, the anti-rotation structure can be formed to prevent the smoothing structure 2 from rotating, thereby improving the stability of the smoothing structure 2 in application, and the accuracy of adjusting the position can be higher.
[0062] In some embodiments, the cross-sectional shape of the sliding rod 1 can also be set to be elliptical or polygonal, and in this case, the shape of the through hole 22 is adapted to the cross-sectional shape of the sliding rod 1. By setting the cross-sectional shape to be elliptical or polygonal, the sliding rod 1 and the smoothing structure 2 can be prevented from rotating relative to each other, thereby forming the anti-rotation structure.
[0063] In some embodiments, when the cross-sectional shapes of the sliding rod 1 and the through hole 22 are elliptical or polygonal, the number of the sliding rods 1 can be set to one or more.
[0064] As one application example, an auxiliary sliding structure is provided between the smoothing structure 2 and the sliding rod 1; the auxiliary sliding structure can facilitate the movement of the smoothing structure 2 on the sliding rod 1 and improve the accuracy of position adjustment.
[0065] In some embodiments, the auxiliary sliding structure includes a plurality of balls, which are embedded in the through hole 22 and partially protrude to contact the surface of the sliding rod 1 .
[0066] In some embodiments, the auxiliary sliding structure can also be set as a linear bearing. In this case, the linear bearing is set between the sliding rod 1 and the through hole 22; for example, the linear bearing is fixed in the through hole 22, and then the sliding rod 1 is inserted into the linear bearing.
[0067] In some embodiments, the auxiliary sliding structure and the sliding rod 1 are arranged in a one-to-one correspondence.
[0068] As an example of one application, Figure 1-3 As shown, a plurality of positioning handles 23 are provided on the smoothing structure 2 , and the positioning handles 23 can be moved to contact with or be separated from the sliding rod 1 .
[0069] In some embodiments, the positioning handle 23 can be configured as a hand-tightened bolt, the positioning handle 23 is threadedly connected to the smoothing structure 2, and the positioning handle 23 can extend into the through hole 22 to form abutting contact or contact separation with the sliding rod 1.
[0070] In some embodiments, the positioning handle 23 and the sliding rod 1 are arranged in a one-to-one correspondence.
[0071] The positioning handle 23 can be used to realize the mutual connection and fixation between the smoothing structure 2 and the sliding rod 1, which is simpler and more convenient in operation.
[0072] As an application example, the number of the smoothing structures 2 corresponds to the number of the pole ears 41 passing over the roller 3 .
[0073] For example, in the case where a pole ear 41 is provided on one side of the pole piece 4, the number of the smoothing structure 2 may be one.
[0074] In the case where pole ears 41 are provided on both sides of the pole piece 4, two smoothing structures 2 are provided, and are respectively located on both sides of the pole piece 4, corresponding to the pole ears 41; and the relative distance between the two smoothing structures 2 is greater than the width of the pole piece 4.
[0075] When a plurality of pole pieces 4 pass through the roller 3 at the same time, the number of the smoothing structures 2 can be increased accordingly.
[0076] By designing the number of the smoothing structural members 2, the entire tab smoothing device can be applied to more application scenarios.
[0077] As an example of one application, Figure 1 , 3 As shown, mounting plates 5 are connected to both ends of the sliding rod 1 , and the mounting plates 5 are mounted on the roller shaft 31 of the roller 3 .
[0078] In some embodiments, the sliding rod 1 is penetrated through the mounting plate 5 and fixed by fasteners.
[0079] In some embodiments, the mounting plate 5 includes an upper mounting plate 51 and a lower mounting plate 52; the sliding rod 1 is fixedly arranged on the upper mounting plate 51, and the upper mounting plate 51 and the lower mounting plate 52 are assembled and connected to achieve installation on the roller shaft 31 of the roller 3.
[0080] By setting the mounting plate 5 and connecting the sliding rod 1 and the roller shaft 31 to the mounting plate 5 , the relative distance between the sliding rod 1 and the surface of the roller 3 can be better regulated.
[0081] In addition, this embodiment also provides a pole piece transmission device, which includes a plurality of rollers 3, and at least one of the rollers 3 is provided with the pole ear smoothing device as described above.
[0082] In some embodiments, the pole piece transmission equipment may be a pole piece winding equipment, a pole piece die cutting equipment, a pole ear gluing equipment, etc.
[0083] By applying the pole ear smoothing device on the pole piece transmission equipment, the pole ear 41 on the pole piece 4 can be smoothed during the transmission process of the pole piece 4 to avoid quality problems such as warping and folding of the pole ear 41, thereby improving the product quality of the pole piece 4.
[0084] 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 tab smoothing device, characterized in that: It comprises a sliding rod and a smoothing structure, wherein the sliding rod is arranged outside the cylinder surface of the roller, the smoothing structure is arranged on the sliding rod, and the relative position of the smoothing structure on the sliding rod is adjustable; The smoothing structure is provided with a smoothing contact surface facing the roller, and a guide section and a smoothing section are sequentially provided on the smoothing contact surface along the conveying direction of the pole piece on the roller; the relative distance between the guide section and the pole piece gradually decreases, and a first preset gap is formed between the smoothing section and the roller surface, and the first preset gap can allow the pole ear on the pole piece to pass through.
2. The tab smoothing device according to claim 1, characterized in that: The height of the first preset gap is 1-2 mm greater than the thickness of the tab.
3. The tab smoothing device according to claim 1 or 2, characterized in that: The smoothing contact surface is located on the outer side of the pole piece, and a second preset gap is formed between the smoothing contact surface and the pole piece; The second preset gap is between 1-2 mm.
4. The tab smoothing device according to claim 1, characterized in that: The smoothing structure is provided with a through hole, and the sliding rod is inserted into the through hole; An anti-rotation structure is arranged between the smoothing structure and the sliding rod.
5. The tab smoothing device according to claim 4, characterized in that: The cross-section of the sliding rod is circular, the sliding rod comprises a first sliding rod and a second sliding rod, and the smoothing structure is provided with a first through hole and a second through hole corresponding to the first sliding rod and the second sliding rod; Alternatively, the cross-sectional shape of the sliding rod is elliptical or polygonal, and the shape of the through hole is adapted to the cross-sectional shape of the sliding rod.
6. The tab smoothing device according to claim 4 or 5, characterized in that: An auxiliary sliding structure is arranged between the smoothing structure and the sliding rod.
7. The tab smoothing device according to claim 6, characterized in that: The smoothing structure is provided with a plurality of positioning handles, and the positioning handles can be moved to contact with or be separated from the sliding rod.
8. The tab smoothing device according to claim 1 or 7, characterized in that: The pole lugs are arranged on both sides of the pole piece, and the smoothing structural members are arranged corresponding to the pole lugs on both sides of the pole piece respectively; The relative distance between the two smoothing structural members is greater than the width of the pole piece.
9. The tab smoothing device according to claim 8, characterized in that: Both ends of the sliding rod are connected with mounting plates, and the mounting plates are mounted on the roller shaft of the roller.
10. A pole piece transmission device, characterized in that: It comprises a plurality of rollers, at least one of which is provided with a tab smoothing device as claimed in any one of claims 1 to 9.