CN217573239U

CN217573239U - Pole piece processing device and battery production line

Info

Publication number: CN217573239U
Application number: CN202221690116.9U
Authority: CN
Inventors: 徐鑫
Original assignee: Sany Technology Equipment Co Ltd
Current assignee: Sany Technology Equipment Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-14
Anticipated expiration: 2032-06-30

Abstract

The utility model provides a pole piece processingequipment and battery production line, wherein, pole piece processingequipment, include: the first cutting roller comprises a first roller body and a male die, the male die comprises a plurality of first tab cutting sections and a first pole piece cutting section, and the first tab cutting sections comprise first notches suitable for forming tabs; the second cutting roller and the first cutting roller are arranged in parallel, the second cutting roller comprises a second roller body and a concave die, the concave die and the convex die are correspondingly arranged, the concave die comprises a plurality of second lug cutting sections and second lug cutting sections, the second lug cutting sections comprise second notches suitable for forming lugs, the structure can simultaneously cut the lugs and the pole pieces through the pair of first cutting roller and the second cutting roller, the pole piece production process is simplified, cutting equipment in a production line is reduced simultaneously, and equipment cost is reduced.

Description

Pole piece processing device and battery production line

Technical Field

The utility model relates to a battery production facility technical field, concretely relates to pole piece processingequipment and battery production line.

Background

In the processing of pole pieces in battery production, a pole piece material belt needs to be unreeled firstly, then a pole lug is processed on the side part of the pole piece material belt (in modes of hardware die cutting, laser cutting, roll cutting and the like), and finally the pole piece material belt is cut (mainly through hardware die cutting) so as to form the pole piece. The process needs two cutting procedures, so that the process is complex and the production equipment cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defects that the production technology of the battery pole piece among the prior art is complicated, and the production facility is with high costs to a pole piece processingequipment and battery production line are provided.

In order to solve the problem, the utility model provides a pole piece processingequipment, include: the first cutting roller comprises a first roller body and a male die, the male die comprises a plurality of first tab cutting sections and first pole piece cutting sections, the first tab cutting sections extend along the circumferential direction of the first roller body, each first tab cutting section comprises a first notch suitable for forming a tab, the plurality of first tab cutting sections are arranged at intervals along the axial direction of the first roller body, and the first pole piece cutting sections are located between two adjacent first tab cutting sections and are suitable for cutting pole pieces; the second cutting roller is arranged in parallel with the first cutting roller, the second cutting roller comprises a second roller body and a concave die, the concave die and the convex die are correspondingly arranged, the concave die comprises a plurality of second lug cutting sections and second lug cutting sections, the second lug cutting sections extend along the circumferential direction of the second roller body, the second lug cutting sections comprise second notches suitable for forming lugs, the second lug cutting sections are arranged along the axial direction of the second roller body at intervals, and the second lug cutting sections are located between two adjacent second lug cutting sections and suitable for cutting apart pole pieces.

Optionally, the first pole piece cutting section includes a first transverse cutting section and a first longitudinal cutting section, the first transverse cutting section extends along the axial direction of the first roller body, and two ends of the first transverse cutting section are respectively connected with the two first tab cutting sections, the first longitudinal cutting section extends along the circumferential direction of the first roller body, and the first longitudinal cutting section and the first transverse cutting section have an overlapping portion.

Optionally, the number of the first notches is two, and the first tab cutting section is divided into a first section and a second section, and the number of the first transverse cutting sections is two, wherein the end of one first transverse cutting section is connected with the first section of the first tab cutting section, and the end of the other first transverse cutting section is connected with the second section of the first tab cutting section.

Optionally, the first longitudinal cut segment is located in a middle portion of the first roller body.

Optionally, the second pole piece cutting segments include a second transverse cutting segment and a second longitudinal cutting segment, the second transverse cutting segment extends along the axial direction of the second roller body, and both ends of the second transverse cutting segment are respectively connected with the two second pole ear cutting segments, the second longitudinal cutting segment extends along the circumferential direction of the second roller body, and the second longitudinal cutting segment and the second transverse cutting segment have an overlapping portion.

Optionally, the number of the second notches is two, and the second tab cutting segment is divided into a first segment and a second segment, and the number of the second transverse cutting segments is two, wherein an end of one of the second transverse cutting segments is connected to the first segment of the second tab cutting segment, and an end of the other of the second transverse cutting segments is connected to the second segment of the second tab cutting segment.

Optionally, the second longitudinal cut segment is located in the middle of the second roller body.

Optionally, the number of the first tab cutting sections is two, and the two first tab cutting sections are respectively located at two ends of the first roller body; and/or the number of the second lug cutting sections is two, and the two second lug cutting sections are respectively positioned at two ends of the second roller body.

Optionally, an adsorption structure is arranged in the female die.

Optionally, the second roller body is of a hollow structure, the adsorption structure comprises an adsorption hole formed in the bottom wall of the female die, and an adsorption interface is arranged at the end of the second roller body.

The utility model also provides a battery production line, including foretell pole piece processingequipment.

The utility model has the advantages of it is following:

utilize the technical scheme of the utility model, first roller and the second of cutting are cut the roller and are rotated in step to make terrace die and die cut extremely the sheet material area. The pole piece material area is through the in-process of first roller and the second roller of cutting, and first utmost point ear cutting section and second utmost point ear cutting section cut the foil, and first breach and second breach form utmost point ear. Meanwhile, the first pole piece cutting section and the second pole piece cutting section cut the pole piece material belt, so that the pole piece material belt is cut into a plurality of pole pieces. Above-mentioned structure is through a pair of first roller and the second roller of cutting, can carry out utmost point ear simultaneously and cut and the pole piece cuts, has simplified pole piece production technology, reduces the cutting equipment in the production line simultaneously, and then reduction equipment cost. Consequently the technical scheme of the utility model the production technology of having solved the battery pole piece among the prior art is complicated, defect that production facility cost is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of a pole piece processing device of the present invention;

fig. 2 is a schematic view showing a structure of a first cutting roll of the pole piece processing apparatus of fig. 1;

FIG. 3 is a schematic view showing the structure of a second cutting roll of the pole piece processing apparatus of FIG. 1;

FIG. 4 shows an enlarged schematic view at A in FIG. 3; and

fig. 5 is a schematic structural diagram (hatched to the material to be cut) of the pole piece processing device in fig. 1 after cutting the pole piece material strap.

Description of reference numerals:

100. a first cutting roller; 110. a first roller body; 120. a male die; 121. a first tab cutting section; 1211. a first notch; 122. cutting a first pole piece into sections; 1221. a first transverse cutting section; 1222. a first longitudinal cut segment; 200. a second cutting roller; 210. a second roller body; 211. an adsorption interface; 220. a female die; 221. a second tab cutting segment; 2211. a second notch; 222. a second diode cutting section; 2221. a second transverse cutting section; 2222. a second longitudinal cut segment; 300. an adsorption structure; 400. a tab; 500. and (6) pole pieces.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the pole piece processing apparatus of the present embodiment includes a first cutting roller 100 and a second cutting roller 200. The specific structure of the first cutting roller 100 and the second cutting roller 200 includes:

the first cutting roller 100 includes a first roller body 110 and a punch 120, and the punch 120 includes two first tab cutting sections 121 and a first pole piece cutting section 122. The first tab cutting section 121 extends in the circumferential direction of the first roller body 110, and the first tab cutting section 121 includes a first notch 1211 adapted to form a tab 400. The two first tab cutting sections 121 are respectively located at two ends of the first roller body 110, and the first pole piece cutting section 122 is located between the two first tab cutting sections 121 and is suitable for cutting the pole piece 500.

And a second cutting roll 200 disposed in parallel with the first cutting roll 100. The second cutting roller 200 includes a second roller body 210 and a female mold 220, and the female mold 220 and the male mold 120 are disposed correspondingly. The female die 220 includes two second tab cutting sections 221 and a second tab cutting section 222, the second tab cutting sections 221 extending along the circumferential direction of the second roller body 210, the second tab cutting sections 221 including second notches 2211 adapted to form the tab 400. Two second tab cutting sections 221 are located at two ends of the second roller 210, respectively, and a second pole piece cutting section 222 is located between the two second tab cutting sections 221 and is adapted to divide the pole piece 500.

With the technical scheme of the embodiment, the first cutting roller 100 and the second cutting roller 200 rotate synchronously, so that the male die 120 and the female die 220 cut the polar sheet material strip. In the process that the pole piece material belt passes through the first cutting roller 100 and the second cutting roller 200, the foil is cut by the first tab cutting section 121 and the second tab cutting section 221, and tabs are formed by the first notch 1211 and the second notch 2211. Meanwhile, the first pole piece cutting section 122 and the second pole piece cutting section 222 cut the strip of pole pieces, so that the strip of pole pieces is cut into a plurality of pole pieces. The structure can simultaneously carry out tab cutting and pole piece cutting through the pair of the first cutting roller 100 and the second cutting roller 200, thereby simplifying the pole piece production process, reducing the cutting equipment in the production line and further reducing the equipment cost. Therefore, the technical scheme of the embodiment overcomes the defects of complex production process and high production equipment cost of the battery pole piece in the prior art.

Of course, in some embodiments, which are not shown, the first tab cutting section 121 may also be provided in plurality, the first tab cutting sections 121 are provided at intervals along the axial direction of the first roller body 110, and the first pole piece cutting section 122 may be located between two adjacent first tab cutting sections 121. Alternatively, the second tab cutting segments 221 may be provided in plurality, the second tab cutting segments 221 are provided at intervals along the axial direction of the second roller body 210, and the second tab cutting segment 222 may be located between two adjacent second tab cutting segments 221.

It should be noted that, in the present embodiment, the shapes of the male mold 120 and the female mold 220 are adapted, and during the rotation of the first roller body 110 and the second roller body 210, the male mold 120 is embedded into the female mold 220, so as to achieve the effect of cutting the pole piece material strip.

That is, the relative positions of the first tab cutting section 121 and the second tab cutting section 221 are the same, and the shapes are adapted. The relative positions of the first pole piece cutting section 122 and the second pole piece cutting section 222 are the same, and the shapes are adaptive. The relative positions of the first and

second gaps

1211 and 2211 are the same, and the gaps are the same in size.

Taking the structure of the first tab cutting section 121 as an example, the first tab cutting section 121 extends along the circumferential direction of the first roller body 110 and forms an annular structure. The first notch 1211 is formed on the first tab cutting section 121, so that when the pole piece material strip passes through the first tab cutting section 121, the first tab cutting section 121 and the second tab cutting section 221 cut the edge metal foil of the pole piece material strip, and the tab 400 is formed at the position of the first notch 1211 and the second notch 2211.

Because the first tab cutting sections 121 are two, and two first tab cutting sections 121 are arranged at two ends of the first roller body 110, the second tab cutting sections 221 are two, and two second tab cutting sections 221 are arranged at two ends of the second roller body 210, the first cutting roller 100 and the second cutting roller 200 can simultaneously process tabs at two sides of the pole piece material strip, and a form of double-side tab outlet is formed.

It should be noted that the first pole piece cutting section 122 and the second pole piece cutting section 222 are used for cutting and cutting the pole piece material tape, so that the pole piece material tape is formed into a multi-sheet form. And each pole piece 500 is processed to form a tab 400.

In addition, the cutters of the male mold 120 and the female mold 220 are arranged in a straight edge manner, and the male mold 120 and the female mold 220 are pressed tightly. When rotating, the second cutting roller 200 is the main drive, drives first cutting roller 100 and rotates, and then eliminates the machining error and the automatically controlled error of concave-convex mould, reduces the risk that the concave-convex mould bumps the sword.

Simultaneously, but the blade self-adaptation meshing of unsmooth mould guarantees the shearing quality when guaranteeing the blade clearance of unsmooth mould, reduces the burr of pole piece and falls the powder.

As shown in fig. 2, in the solution of the present embodiment, the first pole piece cutting segment 122 includes a first transverse cutting segment 1221 and a first longitudinal cutting segment 1222. The first transverse cut segment 1221 extends in the axial direction of the first roller body 110, and both ends of the first transverse cut segment 1221 are connected to the two first tab cut segments 121, respectively, the first longitudinal cut segment 1222 extends in the circumferential direction of the first roller body 110, and the first longitudinal cut segment 1222 and the first transverse cut segment 1221 have an overlapping portion.

Specifically, the first transverse cutting segment 1221 has an elongated structure, and the extending direction thereof is parallel to the axial direction of the first roller 110. Both ends of the first transverse cutting section 1221 are connected to the two first tab cutting sections 121. The first cross cut segment 1221 is used to sever the strip of pole pieces perpendicular to the direction of flow.

Specifically, the first longitudinal cut segment 1222 is in a ring structure, and the first longitudinal cut segment 1222 is located at the middle of the first roller body 110. The first longitudinal cutting segment 1222 is used for cutting the pole piece material belt along the circulation direction.

The pole piece material strip can be cut into a plurality of square structures by the first transverse cutting section 1221 and the first longitudinal cutting section 1222.

As shown in fig. 2, in the technical solution of this embodiment, there are two first notches 1211 and divide the first tab cutting section 121 into a first section and a second section, and there are two first transverse cutting sections 1221, wherein an end of one of the first transverse cutting sections 1221 is connected to the first section of the first tab cutting section 121, and an end of the other first transverse cutting section 1221 is connected to the second section of the first tab cutting section 121.

Specifically, the two first tab cutting sections 121 have the same structure, that is, each first tab cutting section 121 is provided with two first notches 1211. Meanwhile, two first transverse cutting sections 1221 are arranged in parallel.

With reference to fig. 2 and 5, it can be understood by those skilled in the art that the above-mentioned structure makes it possible to process four pole pieces 500 from the pole piece material strip after the first cutting roller 100 and the second cutting roller 200 rotate once.

In addition, a person skilled in the art can adaptively adjust the connection position of the first transverse cutting section 1221 and the first tab cutting section 121 and the width of the first transverse cutting section 1221 and the first longitudinal cutting section 1222 according to the size requirement of the pole piece 500.

Meanwhile, if the first roller body 110 is provided with a greater number of first notches 1211 and first transverse cutting segments 1221, a greater number of pole pieces 500 can be processed when the first cutting roller 100 and the second cutting roller 200 rotate once.

As shown in fig. 4, in the solution of the present embodiment, the second pole piece cutting section 222 includes a second transverse cutting section 2221 and a second longitudinal cutting section 2222. The second transverse cut section 2221 extends in the axial direction of the second roller body 210, and both ends of the second transverse cut section 2221 are connected to the two second tab cut sections 221, respectively. The second longitudinal cut section 2222 extends in the circumferential direction of the second roller body 210, and the second longitudinal cut section 2222 and the second transverse cut section 2221 have an overlapping portion.

As shown in fig. 4, in the solution of the present embodiment, there are two second notches 2211, and the second tab cutting segment 221 is divided into a first segment and a second segment. The second transverse cutting sections 2221 are two in number, wherein an end of one second transverse cutting section 2221 is connected to the first section of the second tab cutting section 221, and an end of the other second transverse cutting section 2221 is connected to the second section of the second tab cutting section 221.

Preferably, the second longitudinal cutting section 2222 is located at the middle of the second roller body 210.

As the structures of the male mold 120 and the female mold 220 are adapted as described above, the structure of the female mold 220 refers to the above description of the structure of the male mold 120, and will not be described again.

As shown in fig. 3 and 4, in the solution of the present embodiment, an adsorption structure 300 is disposed in the concave mold 220. The adsorption structure is used for adsorbing and discharging waste materials generated in cutting.

Specifically, as can be seen from fig. 4, the second roller 210 is a hollow structure, the suction structure 300 includes suction holes disposed on the bottom wall of the female die 220, and the end of the second roller 210 is provided with a suction interface 211. The suction interface is disposed at a rotating shaft of the second roller body 210 and is used for connecting with an external vacuum pumping device. The vacuum pumping means generates a negative pressure in the second roll body 210, and the waste can be collected and discharged through the adsorption holes. As can be seen from fig. 4, the number of the adsorption holes is multiple, and the adsorption holes are uniformly distributed on the bottom wall of the concave die 220.

As shown in fig. 5, the pole piece material tape in this embodiment is cut into a plurality of pole pieces 500 after passing through the first cutting roller 100 and the second cutting roller 200. Wherein the shaded portion is the material being cut.

In addition, the coating layer on the pole piece material belt can adopt the form of intermittent coating, and the crisscross shadow position of middle part violently indulging in also figure 5 does not coat, guarantees that the material after being cut is the metal foil to be convenient for garbage collection, and can reduce the production of processing burr.

This embodiment still provides a battery production line, including foretell pole piece processingequipment.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims

1. A pole piece processing device is characterized by comprising:

a first cutting roll (100), wherein the first cutting roll (100) comprises a first roll body (110) and a male die (120), the male die (120) comprises a plurality of first tab cutting sections (121) and a first pole piece cutting section (122), the first tab cutting sections (121) extend along the circumferential direction of the first roll body, the first tab cutting sections (121) comprise first notches (1211) suitable for forming tabs (400), the plurality of first tab cutting sections (121) are arranged at intervals along the axial direction of the first roll body (110), and the first pole piece cutting section (122) is positioned between two adjacent first tab cutting sections (121) and is suitable for cutting pole pieces (500);

second cutting roller (200), with first cutting roller (100) parallel arrangement, second cutting roller (200) includes second roll body (210) and die (220), die (220) with terrace die (120) correspond the setting, die (220) include a plurality of second polar ear cutting section (221) and second polar piece cutting section (222), second polar ear cutting section (221) are followed the circumference of second roll body (210) extends, second polar ear cutting section (221) are including being suitable for forming second breach (2211) of utmost point ear (400), and are a plurality of second polar ear cutting section (221) are followed the axial interval of second roll body (210) sets up, second polar piece cutting section (222) are located adjacent between the second polar ear cutting section (221) and are suitable for cutting apart pole piece (500).

2. The pole piece processing device according to claim 1, wherein the first pole piece cutting section (122) comprises a first transverse cutting section (1221) and a first longitudinal cutting section (1222), the first transverse cutting section (1221) extends along an axial direction of the first roller body (110), both ends of the first transverse cutting section (1221) are respectively connected with the two first tab cutting sections (121), the first longitudinal cutting section (1222) extends along a circumferential direction of the first roller body (110), and the first longitudinal cutting section (1222) and the first transverse cutting section (1221) have an overlapping portion.

3. The pole piece processing device according to claim 2, characterized in that the first notches (1211) are two and divide the first tab cutting section (121) into a first section and a second section, and the first transverse cutting sections (1221) are two, wherein the end of one of the first transverse cutting sections (1221) is connected to the first section of the first tab cutting section (121) and the end of the other first transverse cutting section (1221) is connected to the second section of the first tab cutting section (121).

4. The pole piece processing apparatus of claim 2, wherein the first longitudinal cut (1222) is located in the middle of the first roller body (110).

5. The pole piece processing device according to claim 1, wherein the second pole piece cutting section (222) comprises a second transverse cutting section (2221) and a second longitudinal cutting section (2222), the second transverse cutting section (2221) extends along the axial direction of the second roller body (210), and both ends of the second transverse cutting section (2221) are respectively connected with the two second pole ear cutting sections (221), the second longitudinal cutting section (2222) extends along the circumferential direction of the second roller body (210), and the second longitudinal cutting section (2222) and the second transverse cutting section (2221) have an overlapping portion.

6. The pole piece processing device of claim 5, wherein the second notches (2211) are two and divide the second tab cutting segment (221) into a first segment and a second segment, and the second transverse cutting segments (2221) are two, wherein the end of one of the second transverse cutting segments (2221) is connected with the first segment of the second tab cutting segment (221), and the end of the other of the second transverse cutting segments (2221) is connected with the second segment of the second tab cutting segment (221).

7. The pole piece processing device according to claim 5, wherein the second longitudinal cutting section (2222) is located in the middle of the second roller body (210).

8. The pole piece processing device according to any one of claims 1 to 7, wherein the number of the first tab cutting sections (121) is two, and the two first tab cutting sections (121) are respectively located at two ends of the first roller body (110); and/or the number of the second lug cutting sections (221) is two, and the two second lug cutting sections (221) are respectively positioned at two ends of the second roller body (210).

9. The pole piece processing device according to any one of claims 1 to 7, characterized in that an adsorption structure (300) is arranged in the female die (220).

10. The pole piece processing device according to claim 9, wherein the second roller body (210) is a hollow structure, the suction structure (300) comprises a suction hole formed in a bottom wall of the female die (220), and a suction interface (211) is formed at an end of the second roller body (210).

11. A battery production line, characterized by comprising a pole piece processing apparatus according to any one of claims 1 to 10.