阅读说明：本技术 一种对称式辊压机及辊压工艺 (Symmetrical roller press and rolling process ) 是由 陆郭庆 王润发 纪荣进 郑明清 陈杰 杨山 李载波 于 2019-11-29 设计创作，主要内容包括：本发明属于电池技术领域,具体涉及一种对称式辊压机,包括第一放卷辊、第一收卷辊、第一极片纠偏装置、第一极片切边装置、第一在线测厚装置、极片轧制装置、第二在线测厚装置、第二极片切边装置、第二极片纠偏装置、第二放卷辊和第二收卷辊,第一极片纠偏装置、第一极片切边装置、第一在线测厚装置、极片轧制装置、第二在线测厚装置、第二极片切边装置、第二极片纠偏装置依次对应设置,第一放卷辊与第一收卷辊并列设置,第一放卷辊、第一收卷辊均与第一极片纠偏装置对应。该辊压机能够对电池极片进行自动化地二次辊压,节省了人工成本,提高了工作效率。此外,还提供了一种该系统的辊压工艺,以提高其工作的稳定性和效率。(The invention belongs to the technical field of batteries, and particularly relates to a symmetrical roller press which comprises a first unwinding roller, a first winding roller, a first pole piece deviation correcting device, a first pole piece edge cutting device, a first online thickness measuring device, a pole piece rolling device, a second online thickness measuring device, a second pole piece edge cutting device, a second pole piece deviation correcting device, a second unwinding roller and a second winding roller, wherein the first pole piece deviation correcting device, the first pole piece edge cutting device, the first online thickness measuring device, the pole piece rolling device, the second online thickness measuring device, the second pole piece edge cutting device and the second pole piece deviation correcting device are sequentially arranged correspondingly, the first unwinding roller and the first winding roller are arranged in parallel, and the first unwinding roller and the first winding roller are both corresponding to the first pole piece deviation correcting device. The roller press can automatically perform secondary rolling on the battery pole piece, saves labor cost and improves working efficiency. In addition, a rolling process of the system is also provided, so that the working stability and efficiency of the system are improved.)

1. A symmetrical roller press is characterized in that: including first unwinding roller (1), first wind-up roll (2), first pole piece deviation correcting device (3), first pole piece side cut device (4), first on-line thickness measuring device (5), pole piece rolling device (6), second on-line thickness measuring device (7), second pole piece trimming device (8), second pole piece deviation correcting device (9), second unwinding roller (10) and second wind-up roll (11), first pole piece deviation correcting device (3) first pole piece side cut device (4) first on-line thickness measuring device (5) pole piece rolling device (6) second on-line thickness measuring device (7) second pole piece trimming device (8) second pole piece deviation correcting device (9) correspond the setting in proper order, first unwinding roller (1) with first wind-up roll (2) sets up side by side, first unwinding roller (1), First wind-up roll (2) all with first pole piece deviation correcting device (3) correspond, the second unreel roller (10) with second wind-up roller (11) set up side by side, the second unreel roller (10) second wind-up roller (11) all with second pole piece deviation correcting device (9) correspond.

2. The symmetrical roller press of claim 1, wherein: a first tension roller (12) is arranged between the first unwinding roller (1), the first winding roller (2) and the first pole piece deviation rectifying device (3).

3. The symmetrical roller press of claim 1, wherein: and a first belt splicing device (13) is arranged in the first pole piece deviation rectifying device (3).

4. The symmetrical roller press of claim 1, wherein: and a second tension roller (14) is arranged between the second unwinding roller (10), the second winding roller (11) and the second pole piece deviation rectifying device (9).

5. The symmetrical roller press of claim 1, wherein: and a second belt connecting device (15) is arranged in the second pole piece deviation rectifying device (9).

6. The symmetrical roller press of claim 1, wherein: the device is characterized by further comprising a first dust removal device (16) and a second dust removal device (17), wherein the first dust removal device (16) and the second dust removal device (17) correspond to the pole piece rolling device (6).

7. The symmetrical roller press of claim 6, wherein: the first dust removal device (16) is arranged between the first online thickness measuring device (5) and the pole piece rolling device (6).

8. The symmetrical roller press of claim 6, wherein: and the second dust removal device (17) is arranged between the second online thickness measuring device (7) and the pole piece rolling device (6).

9. The symmetrical roller press of claim 1, wherein: a first pole piece caching device (18) is arranged between the first pole piece deviation rectifying device (3) and the first pole piece trimming device (4), and a second pole piece caching device (19) is arranged between the second pole piece deviation rectifying device (9) and the second pole piece trimming device (8).

10. The rolling process of the symmetrical roller press is characterized by comprising the following steps of:

s1, releasing the pole piece to be rolled by the first unwinding roller (1);

s2, the pole piece sequentially passes through a first pole piece deviation correcting device (3), a first pole piece edge cutting device (4), a first online thickness measuring device (5), a pole piece rolling device (6), a second online thickness measuring device (7), a second pole piece edge cutting device (8) and a second pole piece deviation correcting device (9) to reach a second winding roller (11);

s3, drawing the pole piece on the second winding roller (11) onto a second unwinding roller (10) to enable the second unwinding roller (10) to release the pole piece needing to be rolled;

s4, enabling the pole piece to sequentially pass through a second pole piece deviation correcting device (9), a second pole piece trimming device (8), a second online thickness measuring device (7), a pole piece rolling device (6), a first online thickness measuring device (5), a first pole piece trimming device (4) and a first pole piece deviation correcting device (3) to reach a first winding roller (2);

s5, the first winding roller (2) winds the electrode sheet so as to finish secondary rolling on the electrode.

Technical Field

The invention belongs to the technical field of batteries, and particularly relates to a symmetrical roller press and a rolling process.

Background

The lithium ion battery cell is popular in the market with the advantages of good safety, high energy density, long cycle life and the like, and the battery pole piece needs to be rolled in the production process so that the thickness of the battery pole piece is uniform.

In order to improve the performance of the battery, the anode pole piece of the battery needs to be rolled twice. In the prior art, the roller press only has a rewinding function and cannot realize secondary rolling, when the anode plate of the battery is rolled for the second time, the anode plate needs to be repeatedly rolled up and down through manual operation of workers, the production mode is long in time consumption and high in labor cost, and the development of enterprises is not facilitated.

In conclusion, the related art has defects and needs to be improved.

Disclosure of Invention

One of the objects of the present invention is: aiming at the defects of the prior art, the symmetrical roller press is provided, the battery pole piece can be automatically rolled secondarily, the labor cost is saved, and the working efficiency is improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

a symmetrical roller press comprises a first unwinding roller, a first winding roller, a first pole piece deviation correcting device, a first pole piece edge cutting device, a first online thickness measuring device, a pole piece rolling device, a second online thickness measuring device, a second pole piece edge cutting device, a second pole piece deviation correcting device, a second unwinding roller and a second winding roller, the first pole piece deviation correcting device, the first pole piece edge cutting device, the first on-line thickness measuring device, the pole piece rolling device, the second on-line thickness measuring device, the second pole piece edge cutting device and the second pole piece deviation correcting device are sequentially and correspondingly arranged, the first unwinding roller and the first winding roller are arranged in parallel, the first unwinding roller and the first winding roller correspond to the first pole piece deviation rectifying device, the second unwinding roller and the second winding roller are arranged in parallel, and the second unwinding roller and the second winding roller correspond to the second pole piece deviation rectifying device. In the work, the first unwinding roller releases a pole piece to be rolled; then the pole piece sequentially passes through a first pole piece deviation correcting device, a first pole piece edge cutting device, a first online thickness measuring device, a pole piece rolling device, a second online thickness measuring device, a second pole piece edge cutting device and a second pole piece deviation correcting device to reach a second winding roller; then, the pole piece on the second winding roller is pulled to a second unwinding roller, so that the pole piece to be rolled is released by the second unwinding roller; then the pole piece sequentially passes through a second pole piece deviation correcting device, a second pole piece edge cutting device, a second online thickness measuring device, a pole piece rolling device, a first online thickness measuring device, a first pole piece edge cutting device and a first pole piece deviation correcting device to reach a first winding roller; finally, a first winding roller winds the electrode sheet so as to finish secondary rolling on the electrode; the roller press can automatically perform secondary rolling on the battery pole piece, saves labor cost and improves working efficiency.

As an improvement of the symmetrical roller press, a first tension roller is arranged between the first unwinding roller, the first winding roller and the first pole piece deviation rectifying device. The structural design is beneficial to rolling the pole piece.

As an improvement of the symmetrical roller press, a first belt splicing device is arranged in the first pole piece deviation rectifying device. In practical application, when a new roll is replaced, the original roll is cut off at the joint, then the new roll is replaced, and the new roll is connected with the belt left on the rolling machine at the joint by using an adhesive tape; the structural design is beneficial to rolling the pole piece.

As an improvement of the symmetrical roller press, a second tension roller is arranged between the second unwinding roller, the second winding roller and the second pole piece deviation rectifying device. The structural design is beneficial to rolling the pole piece.

As an improvement of the symmetrical roller press, a second belt splicing device is arranged in the second pole piece deviation rectifying device. In practical application, when a new roll is replaced, the original roll is cut off at the joint, then the new roll is replaced, and the new roll is connected with the belt left on the rolling machine at the joint by using an adhesive tape; the structural design is beneficial to rolling the pole piece.

The symmetrical roller press is an improvement of the symmetrical roller press, and further comprises a first dust removal device and a second dust removal device, wherein the first dust removal device and the second dust removal device correspond to the pole piece rolling device. The structural design is beneficial to improving the rolling quality of the pole piece.

As an improvement of the symmetrical roller press, the first dust removal device is arranged between the first online thickness measuring device and the pole piece rolling device. The structural design is beneficial to improving the rolling quality of the pole piece.

As an improvement of the symmetrical roller press, the second dust removing device is arranged between the second online thickness measuring device and the pole piece rolling device. The structural design is beneficial to improving the rolling quality of the pole piece.

As an improvement of the symmetrical roller press, a first pole piece caching device is arranged between the first pole piece deviation rectifying device and the first pole piece edge cutting device, and a second pole piece caching device is arranged between the second pole piece deviation rectifying device and the second pole piece edge cutting device. The structural design is beneficial to rolling the pole piece; in practical application, the first buffer device and the second buffer device are composed of a plurality of transition rollers or other devices capable of achieving the same effect, and can be flexibly arranged according to practical conditions.

The second purpose of the invention is: aiming at the defects of the prior art, the rolling process of the symmetrical roller press is also provided to improve the working stability and efficiency of the symmetrical roller press.

In order to achieve the purpose, the invention provides a rolling process of a symmetrical roller press, which comprises the following steps:

s1, releasing the pole piece to be rolled by the first unwinding roller;

s2, the pole piece sequentially passes through the first pole piece deviation correcting device, the first pole piece edge cutting device, the first online thickness measuring device, the pole piece rolling device, the second online thickness measuring device, the second pole piece edge cutting device and the second pole piece deviation correcting device to reach a second winding roller;

s3, drawing the pole piece on the second winding roller onto a second unwinding roller to enable the second unwinding roller to release the pole piece to be rolled;

s4, enabling the pole piece to sequentially pass through a second pole piece deviation correcting device, a second pole piece edge cutting device, a second online thickness measuring device, a pole piece rolling device, a first online thickness measuring device, a first pole piece edge cutting device and a first pole piece deviation correcting device to reach a first winding roller;

and S5, the pole piece is wound by the first winding roller so as to finish secondary rolling of the electrode.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram in an embodiment of the present invention;

wherein: 1-a first unwinding roller; 2-a first wind-up roll; 3-a first pole piece deviation rectifying device; 4-a first pole piece trimming device; 5-a first online thickness measuring device; 6-a pole piece rolling device; 7-a second online thickness measuring device; 8-a second pole piece trimming device; 9-a second pole piece deviation rectifying device; 10-a second unwinding roller; 11-a second wind-up roll; 12-a first tension roll; 13-a first splicing device; 14-a second tension roller; 15-a second splicing device; 16-a first dust removal device; 17-a second dust removal device; 18-a first caching means; 19-second buffer means.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element 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.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited thereto.