CN211217843U

CN211217843U - Pole piece dust extraction and cut coiling equipment

Info

Publication number: CN211217843U
Application number: CN201922222120.7U
Authority: CN
Inventors: 杜帅锋; 刘海兵
Original assignee: Hengdian Group DMEGC Magnetics Co Ltd
Current assignee: Hengdian Group DMEGC Magnetics Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-08-11
Anticipated expiration: 2029-12-12

Abstract

The utility model belongs to the technical field of the lithium cell, a pole piece dust extraction and cut the coiling equipment is disclosed. This pole piece dust extraction includes: the suction nozzles are configured to adsorb dust adhered to the two side edges of the pole piece; and the vacuum generator is communicated with the suction nozzle and is used for providing vacuum adsorption force for the suction nozzle. The slitting and winding equipment comprises the pole piece dust collection device. According to the pole piece dust suction device, the suction nozzles communicated with the vacuum generator are arranged on the two side edges of the pole piece, so that dust attached to the two side edges of the pole piece can be sucked away, dust at the edges of the positive pole piece and the negative pole piece is effectively reduced, the self-discharge proportion of the battery cell is reduced, and the capacity and the circulation consistency of the battery cell are improved.

Description

Pole piece dust extraction and cut coiling equipment

Technical Field

The utility model relates to a lithium cell technical field especially relates to a pole piece dust extraction and cut the coiling equipment.

Background

Compared with the traditional lead-acid, nickel-cadmium and nickel-hydrogen batteries, the lithium battery serving as a new generation of rechargeable battery product has the characteristics of high voltage, high energy density, long cycle life, no memory effect, no pollution and the like, so that the lithium battery is widely applied to the fields of 3C products, power and energy storage. With the wider application in the field of power, the requirements on the cycle performance, the mass specific energy and the volume specific energy of the battery are higher and higher.

The cylindrical battery cell is the earliest type in the lithium battery industry, the application occasions are very wide due to the standardization of the shape of the cylindrical battery cell, the cylindrical battery cell can be used in 3C products, energy storage, electric tools, automobile power and other occasions, and the production equipment has greater advantages in automation capacity and production efficiency compared with soft packages and square aluminum shells; but it has a major disadvantage in terms of cell cycle performance compared to square aluminum shells and soft packs.

The slitting of the battery pole piece is carried out in the material area, and the phenomena of powder falling, loosening of a coating film at the slitting edge of the pole piece and the like can be generated. The powder comprises a main material and current collecting powder, and the powder is attached to the edge of the pole piece and can influence the self-discharge proportion of the battery cell, so that the capacity and the circulation consistency of the battery cell are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pole piece dust extraction can effectively reduce the dust at positive negative pole piece edge, is favorable to reducing electric core self-discharge proportion, improves electric core capacity and endless uniformity.

Another object of the utility model is to provide a divide and cut the coiling equipment, can reduce electric core self-discharge proportion, improve electric core capacity and endless uniformity.

To achieve the purpose, the utility model adopts the following technical proposal:

a pole piece dust extraction includes:

the suction nozzles are configured to adsorb dust adhered to the two side edges of the pole piece;

the vacuum generator is communicated with the suction nozzle and is used for providing vacuum adsorption force for the suction nozzle.

As the preferred technical scheme of the pole piece dust suction device, an avoiding groove is formed in the suction nozzle, the edge of the pole piece extends into the avoiding groove, and the groove wall and the groove bottom of the avoiding groove are arranged at intervals.

As the preferable technical scheme of the pole piece dust suction device, the distance between the pole piece and the groove bottom and the groove wall is 2mm-3 mm.

As the preferable technical scheme of the pole piece dust suction device, a vacuum negative pressure cavity is arranged in the suction nozzle and is communicated with the vacuum generator.

As the preferable technical scheme of the pole piece dust suction device, an adsorption port is formed in one side, facing the pole piece, of the suction nozzle, and the adsorption port is communicated with the vacuum negative pressure cavity.

As a preferable technical scheme of the pole piece dust collection device, the pole piece dust collection device further comprises a mounting support, and the suction nozzles are arranged on the mounting support in a sliding mode and can be fixed at any position on the mounting support so as to adjust the distance between the two suction nozzles.

As the preferable technical scheme of the pole piece dust collection device, one of the mounting bracket and the suction nozzle is provided with a sliding block, the other one of the mounting bracket and the suction nozzle is correspondingly provided with a sliding groove, and the sliding groove is in sliding connection with the sliding block.

As the preferable technical scheme of the pole piece dust collection device, the pole piece dust collection device further comprises a dust collection pipe, and the dust collection pipe is connected between the suction nozzle and the vacuum generator.

As the preferable technical scheme of the pole piece dust collection device, the pole piece dust collection device further comprises an air pipe and a dust collector, wherein one end of the air pipe is connected with the vacuum generator, and the other end of the air pipe is connected with the dust collector.

A slitting and winding device comprises the pole piece dust suction device.

Compared with the prior art, the utility model discloses an advantage and beneficial effect lie in:

the utility model provides a pole piece dust suction device, which comprises at least one group of suction nozzle and a vacuum generator, wherein each group of suction nozzle comprises two suction nozzles which are respectively positioned at two opposite side edges of a pole piece, and the suction nozzles are used for absorbing dust adhered to the two side edges of the pole piece; the vacuum generator is communicated with the suction nozzle and used for providing vacuum adsorption force for the suction nozzle. According to the pole piece dust suction device, the suction nozzles communicated with the vacuum generator are arranged on the two side edges of the pole piece, so that dust attached to the two side edges of the pole piece can be sucked away, dust at the edges of the positive pole piece and the negative pole piece is effectively reduced, the self-discharge proportion of the battery cell is reduced, and the capacity and the circulation consistency of the battery cell are improved.

The utility model provides a cut the coiling equipment, including foretell pole piece dust extraction, should cut the coiling equipment and can reduce electric core from the discharge ratio, improve electric core capacity and endless uniformity.

Drawings

FIG. 1 is a top view of a pole piece dust collector according to an embodiment of the present invention;

FIG. 2 is a side view of a pole piece dust collector according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a pole piece dust collector according to an embodiment of the present invention;

fig. 4 is a rear view of the pole piece dust collector provided in the embodiment of the present invention.

The figures are labeled as follows:

1. a suction nozzle; 11. an avoidance groove; 2. a vacuum generator; 3. mounting a bracket; 31. a strip-shaped groove; 4. a dust collection pipe; 5. an air tube; 6. a connecting member;

100. and (6) pole pieces.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; 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 in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly but via another feature. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment discloses a pole piece dust collection device, as shown in fig. 1 to 4, the pole piece dust collection device mainly comprises at least one group of suction nozzles 1 and a vacuum generator 2, wherein each group of suction nozzles 1 comprises two suction nozzles 1 respectively positioned at two opposite side edges of a pole piece 100, and the suction nozzles 1 are configured to adsorb dust adhered to the two side edges of the pole piece 100; the vacuum generator 2 is communicated with the suction nozzle 1 and is used for providing vacuum suction force for the suction nozzle 1.

According to the pole piece dust collection device, the suction nozzles 1 communicated with the vacuum generator 2 are arranged on the two side edges of the pole piece 100, so that dust attached to the two side edges of the pole piece 100 can be sucked away, dust on the edges of the positive pole piece 100 and the negative pole piece 100 is effectively reduced, the self-discharge proportion of an electric core is reduced, and the capacity and the circulation consistency of the electric core are improved.

The pole piece dust suction device is used for non-contact dust suction, namely, the pole piece 100 penetrates through the suction nozzle 1 but is not in contact with the suction nozzle 1. An avoiding groove 11 is formed in the suction nozzle 1, and the edge of the pole piece 100 extends into the avoiding groove 11 and is arranged at intervals with the groove wall and the groove bottom of the avoiding groove 11. Optionally, the distance between the pole piece 100 and the groove bottom and the groove wall is 2mm-3 mm. Under this structure, the edge of pole piece 100 is located in avoidance groove 11, has realized non-contact dust absorption.

Further, a vacuum negative pressure cavity is arranged in the suction nozzle 1 and is communicated with the vacuum generator 2. Furthermore, an adsorption port is formed on one side of the suction nozzle 1 facing the pole piece 100, and the adsorption port is communicated with the vacuum negative pressure cavity. The negative pressure generated by the vacuum generator 2 acts on the adsorption port through the vacuum negative pressure cavity to suck away the dust attached to the edge of the pole piece 100.

In order to improve the universality of the pole piece dust collection device and adapt to pole pieces 100 with different specifications and sizes, the pole piece dust collection device further comprises a mounting support 3, and the suction nozzle 1 is arranged on the mounting support 3 in a sliding mode and can be fixed at any position on the mounting support 3. The interval between the suction nozzles 1 can be adjusted according to the width of the pole piece 100 so as to realize the dust removal effect on the pole pieces 100 with different widths.

Optionally, one of the mounting bracket 3 and the suction nozzle 1 is provided with a sliding block, the other one is correspondingly provided with a sliding groove, the sliding groove is connected with the sliding block in a sliding manner, and the sliding structure is simple and easy to process. Preferably, in this embodiment, the cross section of the mounting bracket 3 is a U-shaped sliding slot structure, and includes a bottom plate and a limiting plate vertically connected to two opposite sides of the bottom plate, the opening of the mounting bracket 3 faces one side of the suction nozzle 1, and the suction nozzle 1 is slidably disposed in the U-shaped sliding slot structure. As an implementation mode, the suction nozzle 1 is in a cubic structure, and two opposite side surfaces of the suction nozzle 1 are respectively abutted against two limiting plates of the U-shaped sliding chute structure, so that the suction nozzle 1 can flexibly slide on the mounting bracket 3.

Further, a connecting hole is formed in the suction nozzle 1, a strip-shaped groove 31 is formed in the mounting bracket 3, and the connecting piece 6 is slidably arranged in the strip-shaped groove 31 and connected to the connecting hole to fix the suction nozzle 1 on the mounting bracket 3. Preferably, the connection hole is a threaded hole, the connecting member 6 is a screw, the head of the screw is pressed against the surface of the mounting bracket 3, and the stud of the screw is connected in the connection hole in a threaded manner. In order to facilitate the fixation of the suction nozzle 1 and improve the installation convenience and the universality, the suction nozzle 1 is provided with connecting holes on the two opposite side surfaces of the avoiding groove 11. The number of the connecting holes on each surface can be one, two or more, and the embodiment is preferably two.

In the present embodiment, the pole piece dust collector further comprises a dust suction pipe 4, an air pipe 5 and a dust collector (not shown in the figure), wherein the dust suction pipe 4 is connected between the suction nozzle 1 and the vacuum generator 2. One end of the air pipe 5 is connected with the vacuum generator 2, and the other end is connected with the dust collector.

According to the pole piece dust suction device provided by the embodiment, continuous negative pressure generated by the vacuum generator 2 is acted on the vacuum negative pressure cavity in the suction nozzle 1 through the dust suction pipe 4, and then dust adhered to the edges of two sides of the pole piece 100 is sucked away from the suction port; and then sucked into the dust collector through the air pipe 5.

This embodiment still provides a cutting take-up equipment, and this cutting take-up equipment includes foretell pole piece dust extraction.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. 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. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a pole piece dust extraction which characterized in that includes:

the suction nozzles (1) in each group comprise two suction nozzles (1) respectively positioned on two opposite side edges of one pole piece (100), and the suction nozzles (1) are configured to adsorb dust adhered to the two side edges of the pole piece (100);

the vacuum generator (2) is communicated with the suction nozzle (1) and is used for providing vacuum adsorption force for the suction nozzle (1).

2. The pole piece dust suction device according to claim 1, wherein an avoiding groove (11) is formed in the suction nozzle (1), and the edge of the pole piece (100) extends into the avoiding groove (11) and is spaced from the groove wall and the groove bottom of the avoiding groove (11).

3. The pole piece dust extraction of claim 2, wherein the spacing between the pole piece (100) and the slot bottom and slot wall is 2mm-3 mm.

4. The pole piece dust extraction device of claim 1, wherein a vacuum suction chamber is provided in the suction nozzle (1), said vacuum suction chamber being in communication with the vacuum generator (2).

5. The pole piece dust extraction of claim 4, characterized in that, the suction nozzle (1) is provided with an adsorption port on one side facing the pole piece (100), and the adsorption port is communicated with the vacuum negative pressure cavity.

6. The pole piece dust extraction of claim 1, further comprising a mounting bracket (3), wherein the suction nozzle (1) is slidably disposed on the mounting bracket (3) and can be fixed at any position on the mounting bracket (3) to adjust the distance between the two suction nozzles (1).

7. The pole piece dust extraction device of claim 6, wherein one of the mounting bracket (3) and the suction nozzle (1) is provided with a slide block, the other is correspondingly provided with a slide groove, and the slide groove is connected with the slide block in a sliding manner.

8. The pole piece suction device according to claim 1, further comprising a suction duct (4), said suction duct (4) being connected between said suction nozzle (1) and said vacuum generator (2).

9. The pole piece dust extraction of claim 1, further comprising an air pipe (5) and a dust collector, wherein one end of the air pipe (5) is connected to the vacuum generator (2), and the other end is connected to the dust collector.

10. A slitting and winding machine comprising a pole piece suction device according to any one of claims 1 to 9.