CN211719713U

CN211719713U - Rolling device for full-tab battery pole piece

Info

Publication number: CN211719713U
Application number: CN201921962383.5U
Authority: CN
Inventors: 吕婷
Original assignee: Henan Xinquan Energy Technology Co ltd
Current assignee: Henan Xinquan Energy Technology Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-10-20
Anticipated expiration: 2029-11-13

Abstract

The utility model belongs to the technical field of battery processing equipment, especially, relate to a roll-in device for full utmost point ear battery pole piece for roll-in device for full utmost point ear battery pole piece includes: the first receiving and releasing mechanism comprises a first material placing disc and a first material receiving disc, the first material placing disc is used for winding one end of the pole piece, and the first material receiving disc is used for winding the other end of the pole piece; the lead belt is wound between the second discharging disc and the second receiving disc, and the width of the lead belt is greater than or equal to the width of a blank foil area on the corresponding side of the pole piece; and the rolling part comprises at least two pressing rollers which are respectively arranged on two sides of the leading belt, and the pressing rollers on the two sides press the leading belt and the pole piece tightly. The arrangement of the leading belt increases the extension rate of the pressing roller to the blank foil area, the stress of the material area is basically the same as that of the blank foil area, the extension phase difference is small, the reject ratio of product manufacturing procedures is reduced, and the product yield and the production efficiency are improved.

Description

Rolling device for full-tab battery pole piece

Technical Field

The utility model belongs to the technical field of battery processing equipment, especially, relate to a roll-in device for full utmost point ear battery pole piece.

Background

The common unipolar ear that has of lithium ion battery internal design structure, the multiple pole ear, the full utmost point ear, multiple structures such as lamination formula, full utmost point ear structural design is comparatively simple, and can make the internal resistance of battery reduce by a wide margin, it brings great promotion space to charge and discharge for big multiplying power, however, full utmost point ear battery pole piece is when the positive plate is in the roll-in, because the ductility of material district and blank foil district (leaving white region) does not use, the material district ductility is great after the pole piece roll-in, the ductility in blank foil district is less, make pole piece tension uneven, the broken piece phenomenon takes place easily, product processing procedure defective rate is great.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a roll-in device for full utmost point ear battery pole piece aims at solving the lower technical problem of the product yield of the full utmost point ear battery pole piece among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: a roll-in device for full utmost point ear battery sheet includes:

the first winding and unwinding mechanism comprises a first unwinding disc and a first receiving disc, the first unwinding disc is used for winding one end of the pole piece, and the first receiving disc is used for winding the other end of the pole piece;

the lead belt is wound between the second discharging disc and the second receiving disc, and the width of the lead belt is greater than or equal to the width of a blank foil area on the corresponding side of the pole piece;

and the rolling part comprises at least two pressing rollers which are respectively arranged on two sides of the leading belt, and the pressing rollers on the two sides press the leading belt and the pole piece tightly.

Further, the axial direction of the press roller is parallel to the width direction of the pole piece.

Further, the rolling device further comprises a frame, a first driving motor and a second driving motor, wherein the first discharging disc, the first receiving disc, the second discharging disc and the second receiving disc are respectively and rotatably arranged on the frame, the first driving motor and the second driving motor are both fixed on the frame, an output shaft of the first driving motor is connected with a rotating shaft of the first receiving disc, and an output shaft of the second driving motor is connected with a rotating shaft of the second receiving disc.

Furthermore, the rolling device also comprises at least one guide assembly, the guide assembly comprises a plurality of guide rollers arranged at intervals, the guide rollers are arranged between the first discharging disc and the first receiving disc, and the pole piece is wound between the guide rollers.

Furthermore, the quantity of compression roller is two, two the compression roller is last compression roller and lower compression roller respectively, the compression roller is located down under the last compression roller, the top of first blowing dish, the top of first receipts charging tray and the top of lower compression roller is located same horizontal plane.

Furthermore, a plurality of adjusting rollers for tensioning the leading belt are arranged between the second material placing disc and the second material receiving disc, and the leading belt is wound between the adjusting rollers.

Furthermore, the number of the adjusting rollers is two, and the two adjusting rollers are symmetrically arranged on the left side and the right side of the upper pressing roller.

Further, the leader is a thin film having extensibility.

Further, the film is a polyester film.

Further, the thickness of the film is smaller than that of the coating layer of the pole piece.

The utility model has the advantages that: the utility model discloses a roll-in device for full utmost point ear battery pole piece, owing to be provided with the second jack, the winding has the area of drawing between second blowing dish in the second jack and the second receiving tray, during the roll-in, the compression roller of both sides will draw the area and compress tightly with the pole piece, thereby realize the roll-in operation, draw area reuse, and the width more than or equal to pole piece of drawing the area corresponds the width in the blank foil district of side, the roll-in-process, the setting up of drawing the area has increased the extension rate of compression roller to the blank foil district, the atress in material district and blank foil district is the same basically, the extension phase difference is less, consequently, adopt this roll-in device can avoid because of the uneven pole piece tension and the disconnected area problem that cause of the extension difference in pole piece material district and blank foil district, the defective rate of product processing procedure has been reduced, product yield and.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic diagram of a partial top view structure of a full-tab battery pole piece;

fig. 2 is a schematic side view of a rolling device for a full-tab battery pole piece according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a top view of the rolling device for the full-tab battery pole piece shown in fig. 2.

Wherein, in the figures, the respective reference numerals:

10-pole piece; 11-material area; 12-a blank foil area; 100-a first pick-and-place mechanism; 110-a first tray; 120-a first material receiving tray; 20-leading a belt; 200-a second pick and place mechanism; 210-a second emptying tray; 220-a second material receiving disc; 300-a roll press; 310-upper press roll; 320-a lower press roll; 400-a guide assembly; 410-a guide roller; 500-adjustment of the rolls.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in FIGS. 1-2, the embodiment of the utility model provides a roll-in device for full utmost point ear battery pole piece for pole piece 10 to full utmost point ear battery rolls in. As shown in fig. 1, the middle of the pole piece 10 has a paste area 11 coated with paste, and both sides of the pole piece 10 in the width direction have blank foil areas 12 not coated with paste, i.e. the metal foils on both sides of the pole piece 10 in the width direction are exposed. As shown in fig. 2 and 3, the rolling device includes a first retracting mechanism 100, a second retracting mechanism 200, a leader 20, and a roll 300. The first pick and place mechanism 100 includes a first placing tray 110 and a first receiving tray 120, and one end of the pole piece 10 is wound around the first placing tray 110, and the other end is wound around the first receiving tray 120. The second winding and unwinding mechanism 200 includes a second unwinding disc 210 and a second winding disc 220, one end of the leader 20 is wound around the second unwinding disc 210, and the other end is wound around the second winding disc 220, and the width of the leader 20 is set to be greater than or equal to the width of the blank foil area 12 on the corresponding side of the pole piece 10. The rolling part 300 comprises at least two pressing rollers, each pressing roller is respectively arranged at two sides of the leading belt 20 and at two sides of the pole piece 10, the leading belt 20 and the pole piece 10 are pressed together by the pressing rollers at the two sides, and the leading belt 20 is tightly attached to the blank foil area 12 at the two sides of the pole piece 10. That is, the pressing roller on one side is not in direct contact with the blank foil area 12 of the pole piece 10, but the blank foil area 12 of the pole piece 10 is pressed between the pressing rollers on both sides by the leader 20. Before rolling, the pole piece passes through the compression rollers on the two sides, the lead belt 20 also passes through a gap between the compression rollers on the two sides, after rolling starts, the receiving tray rotates to drive the pole piece 10 to move, the compression rollers on the two sides also rotate synchronously, the arrangement of the lead belt 20 increases the extension rate of the compression rollers to the blank foil area 12, so that the tension of the pole piece is kept consistent, the broken belt can be effectively reduced, and the yield is improved. The unreeling tension of the lead belt 20 can be set to be the same as that of the pole piece 10, and the lead belt 20 can be repeatedly used, so that the device is low in cost and can be used for a long time.

The rolling device for the full-tab battery pole piece provided by the embodiment is provided with the second collecting and releasing mechanism 200, the lead belt 20 is wound between the second material placing disc 210 and the second material receiving disc 220 in the second collecting and releasing mechanism 200, and during rolling, the lead belt 20 and the pole piece 10 are tightly pressed by the compression rollers on two sides, so that rolling operation is realized, the lead belt 20 can be recycled, the width of the lead belt 20 is greater than or equal to the width of the blank foil area 12 on the corresponding side of the pole piece 10, in the rolling process, the extension rate of the compression rollers to the blank foil area 12 is increased by the arrangement of the lead belt 20, the material area 11 and the blank foil area 12 are basically the same in stress, and the extension phase difference is small, so that the problems of pole piece tension and belt breakage caused by different extensions of the pole piece material area 11 and the blank foil area 12 can be avoided by adopting the rolling device, the reject ratio of a product manufacturing process is reduced, and the product.

In one embodiment, as shown in fig. 2 and 3, the axial direction of the pressing roller is parallel to the width direction of the pole piece 10. When two compression rollers are arranged, the compression rollers can be arranged in the middle between the first material placing tray 110 and the first material receiving tray 120, namely, the first material placing tray 110 and the first material receiving tray 120 are symmetrically arranged on two sides of the surface passing through the axial center lines of the two compression rollers, and the first material placing tray 110 and the first material receiving tray 120 are horizontally arranged and located at the same horizontal height position.

In an embodiment, the rolling device further includes a frame, and a first driving motor and a second driving motor (not shown), the first material placing tray 110, the first material receiving tray 120, the second material placing tray 210, and the second material receiving tray 220 are respectively disposed on the frame, the first driving motor and the second driving motor are fixed on the frame, an output shaft of the first driving motor is connected to a rotating shaft of the first material receiving tray 120, and an output shaft of the second driving motor is connected to a rotating shaft of the second material receiving tray. The specific rack can comprise a bottom plate and two fixing plates vertically fixed on the bottom plate, the two fixing plates are arranged in parallel at intervals, respective rotating shafts of the first material placing disc 110, the first material receiving disc 120, the second material placing disc 210 and the second material receiving disc 220 are respectively and rotatably installed on the fixing plates on two sides through bearings, and the first driving motor and the second driving motor are both fixed on one of the fixing plates.

In an embodiment, the rolling device further includes at least one guiding assembly 400, the guiding assembly 400 includes a plurality of guiding rollers 410 disposed at intervals, the plurality of guiding rollers 410 are disposed between the first material placing tray 110 and the first material receiving tray 120, and the pole piece 10 is wound between the guiding rollers 410.

In one embodiment, as shown in fig. 2 and 3, the axis direction of the pressing roller is arranged parallel to the width direction of the pole piece 10, each guide assembly 400 includes three guide rollers 410, the top surfaces of two of the three guide shafts are displaced by the same height as the top surface of the first baiting disk 110, and the two guide rollers 410 are symmetrically arranged with respect to the middle guide roller 410.

In an embodiment, the number of the pressing rollers is two, the two pressing rollers are an upper pressing roller 310 and a lower pressing roller 320, the lower pressing roller 320 is located right below the upper pressing roller 310, the top end of the first discharging tray 110, the top end of the first receiving tray 120 and the top end of the lower pressing roller 320 are located on the same horizontal plane, and the top ends of the two guiding rollers 410 in the guiding assemblies 400 on both sides and the top end of the lower pressing roller 320 are located on the same horizontal plane. A third driving motor can be arranged on the frame, an output shaft of the third driving motor is connected with a rotating shaft of the upper press roller 310, and the upper press roller 310 is in transmission connection with the lower press roller 320 through a transmission part, such as a belt; the upper pressure roller 310 rotates in the opposite direction to the lower pressure roller 320, and as shown in fig. 2, the upper pressure roller 310 rotates counterclockwise and the lower pressure roller 320 rotates clockwise.

In one embodiment, a plurality of adjusting rollers 500 are disposed between the second discharging tray 210 and the second receiving tray 220, the adjusting rollers 500 are used for tensioning the leader 20, the leader 20 is wound between the adjusting rollers 500, and the leader 20 is wound between the second discharging tray 210 and the second receiving tray 220 by the adjusting rollers 500. After the rolling is started, the unreeling tension of the leading belt 20 and the unreeling tension of the pole piece 10 are set to be the same, and the reeling tensions at the tail parts of the leading belt and the pole piece can be adjusted according to actual conditions, namely the reeling is kept tidy.

In one embodiment, as shown in fig. 2, two adjusting rollers 500 are provided, the two adjusting rollers 500 are symmetrically arranged on the left and right sides of the upper pressing roller 310, the position of the horizontal plane passing through the bottom ends of the two adjusting rollers 500 is higher than the position of the horizontal plane passing through the top end of the upper pressing roller 310, and the included angle between the leader 20 between the left adjusting roller 500 and the upper pressing roller 310 and the horizontal plane may be set to be equal to the included angle between the leader 20 between the right adjusting roller 500 and the upper pressing roller 310 and the horizontal plane.

In one embodiment, the leader 20 is a thin film having extensibility, and the thin film is closely attached to the pole piece 10 when being rolled. The film may be a polyester film or a thermoplastic polyurethane film.

In one embodiment, the leader 20 is a polyester film, which has a certain ductility, is colorless and transparent, and can visually observe the appearance effect of each part of the pole piece during the rolling process, and the polyester film has the advantages of excellent mechanical properties, high rigidity, hardness and toughness, and low cost.

In one embodiment, the thickness of the film is set to be less than the thickness of the coating layer of the electrode sheet 10, so that the material area 11 and the blank foil area 12 are substantially uniformly stressed by the pressing roller during rolling. In one embodiment, the thickness of the leader 20 can be set to be 50 μm to 80 μm, for example, a mylar or the like, and when the leader 20 is rolled, the leader can effectively transmit pressure and can not damage the flexible film easily, and the thickness of the leader 20 can be specifically set according to the thickness of the coating corresponding to the pole piece 10.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a roll-in device for full utmost point ear battery pole piece which characterized in that: the method comprises the following steps:

2. The rolling device for the full-tab battery pole piece according to claim 1, characterized in that: and the axial direction of the compression roller is parallel to the width direction of the pole piece.

3. The rolling device for the full-tab battery pole piece according to claim 1, characterized in that: the rolling device further comprises a rack, a first driving motor and a second driving motor, wherein the first discharging disc, the first receiving disc, the second discharging disc and the second receiving disc are respectively rotatably arranged on the rack, the first driving motor and the second driving motor are both fixed on the rack, an output shaft of the first driving motor is connected with a rotating shaft of the first receiving disc, and an output shaft of the second driving motor is connected with a rotating shaft of the second receiving disc.

4. The rolling device for the full-tab battery pole piece according to claim 1, characterized in that: the rolling device further comprises at least one guide assembly, the guide assembly comprises a plurality of guide rollers arranged at intervals, the guide rollers are arranged between the first material placing disc and the first material receiving disc, and the pole piece is wound between the guide rollers.

5. The rolling device for the full-tab battery pole piece according to claim 1, characterized in that: the quantity of compression roller is two, two the compression roller is last compression roller and lower compression roller respectively, the compression roller is located down under the last compression roller, the top of first blowing dish the top of first receiving tray with the top of compression roller is located same horizontal plane down.

6. The rolling device for the full-tab battery pole piece according to claim 5, wherein: a plurality of adjusting rollers for tensioning the leading belt are arranged between the second material placing disc and the second material receiving disc, and the leading belt is wound between the adjusting rollers.

7. The rolling device for the full-tab battery pole piece according to claim 6, wherein: the number of the adjusting rollers is two, and the two adjusting rollers are symmetrically arranged on the left side and the right side of the upper pressing roller.

8. The rolling device for the full-tab battery pole piece according to any one of claims 1 to 7, characterized in that: the leader is a thin film having extensibility.

9. The rolling device for full-tab battery pole pieces according to claim 8, wherein: the film is a polyester film.

10. The rolling device for full-tab battery pole pieces according to claim 8, wherein: the thickness of the film is smaller than that of the coating layer of the pole piece.