Automatic roller wiping device for lithium battery roller press

Abstract

The utility model relates to an automatic roller wiping device for a lithium battery roller press, which comprises an unwinding roller, a winding roller and supporting rollers, the unwinding roller is used for unwinding a non-woven fabric roll for roller wiping, the winding roller is used for winding non-woven fabric subjected to roller wiping, and the supporting rollers comprise an upper supporting roller and a lower supporting roller. The two rollers are located on the outer side of the circumference of the roller press roller and make close contact with the roller press roller; the automatic roller wiping device further comprises a solvent spraying device, the solvent spraying device comprises a nozzle, and the nozzle is located between the upper supporting roller and the lower supporting roller. According to the automatic roller wiping device for the lithium battery roller press, roller wiping is continuously carried out in the pole piece rolling process, manual roller wiping can be carried out without shutdown, the production efficiency is improved, meanwhile, the probability of occurrence of production accidents is reduced, and in addition, the consistency of the pole piece rolling thickness is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium ion battery technical field, concretely relates to a kind of automatic roller cleaning device for lithium battery roller press. BACKGROUND

[0002] With our country developing low carbon, environmental protection economy, lithium battery is repeatedly charged and discharged and its product itself can be recycled, and it has important application in new energy automobile, electric power storage and other industries.Lithium battery has positive pole piece, negative pole piece, diaphragm and electrolyte, and positive pole piece and negative pole piece need to be rolled by roller press after coating in lithium battery preparation process, to improve battery energy density and electrical performance.

[0003] After roller press, part of positive and negative pole powder on pole piece is bonded on roller press roller, and these powder will affect roller press thickness of pole piece on one hand, and powder particle falling in roller press process will affect self-discharge and other performance of battery on the other hand.Therefore, in the process of lithium battery pole piece roller press, roller press is often stopped after a certain time, and then manual roller cleaning is carried out, which not only seriously affects production efficiency, but also may cause injury accident to staff, and pole piece roller press thickness is also unstable. SUMMARY

[0004] The utility model aims at providing a kind of automatic roller cleaning device for lithium battery roller press, which can continuously clean roller during pole piece roller press, without stopping for personnel roller cleaning, and also ensure the stability of pole piece thickness after roller press.

[0005] The utility model solves the above-mentioned technical scheme that the technical scheme is adopted: a kind of automatic roller cleaning device for lithium battery roller press, the automatic roller cleaning device includes the unwinding roller for the unwinding non-woven fabric roll for roller cleaning, the winding roller for winding non-woven fabric after roller cleaning and support roller, the support roller includes upper support roller and lower support roller, and is located at the circumference outside of roller press roller and is in close contact with it;The automatic roller cleaning device further includes solvent spraying device, and the solvent spraying device includes nozzle, and the nozzle is located between upper support roller and lower support roller.

[0006] Preferably, the unwinding roller and winding roller are arranged in parallel and located on one side of the roller press.

[0007] Preferably, the solvent spraying device is arranged on the same side of the unwinding roller and winding roller and located between the unwinding roller and winding roller.

[0008] Preferably, the distance between the upper support roller and the lower support roller is one fifth of the outer circumference length of the roller press roller.

[0009] Preferably, the nozzle is located between the upper support roller and the lower support roller and close to the lower support roller.

[0010] More preferably, the nozzle is close to the lower supporting roller and is located at one fourth of the distance between the upper supporting roller and the lower supporting roller.

[0011] Preferably, the unwinding roller and the winding roller are respectively driven by motors, and the motors drive the unwinding roller and the winding roller to roll for controlling the advancing speed of the non-woven fabric.

[0012] More preferably, the unwinding roller and the winding roller have the same rotating speed.

[0013] Preferably, the advancing direction of the non-woven fabric is opposite to the rotating direction of the pressing roller of the roller press.

[0014] Preferably, the solvent in the solvent spraying device can be deionized water, ethanol, acetone and the like according to the difference of the positive and negative electrode materials.

[0015] Compared with the prior art, the lithium battery roller press automatic roller wiping device has the following advantages:

[0016] The lithium battery roller press automatic roller wiping device provided by the present application continuously wipes the roller during the process of rolling the pole piece, and personnel wiping of the roller is not required, so that the production efficiency is improved, the probability of production accidents is reduced, and the consistency of the thickness of the pole piece is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of the lithium battery roller press automatic roller wiping device in the embodiment of the present application.

[0018] In the figure, 1 is an unwinding roller, 2 is a winding roller, 3 is a supporting roller, 3.1 is an upper supporting roller, 3.2 is a lower supporting roller, 4 is a pressing roller of a roller press, 5 is a solvent spraying device, 5.1 is a nozzle, and 6 is a non-woven fabric. DETAILED DESCRIPTION

[0019] The present application will be further described in detail below with reference to the accompanying drawings.

[0020] As shown in Fig. 1, the structural schematic view of the lithium battery roller press automatic roller wiping device in the embodiment of the present application. Figure 1

[0021] ​The application discloses an automatic roller wiping device for a lithium battery roller press, which comprises an unwinding roller 1 for unwinding a non-woven fabric 6 roll, a winding roller 2 for winding the non-woven fabric 6 after wiping, and a supporting roller 3, wherein the unwinding roller 1 and the winding roller 2 are respectively driven by motors, the motors drive the unwinding roller 1 and the winding roller 2 to roll (the rotating speeds of the unwinding roller 1 and the winding roller 2 are the same) for controlling the advancing speed of the non-woven fabric, the unwinding roller 1 and the winding roller 2 are arranged in parallel and located on one side of the roller press, and the supporting roller 3 comprises an upper supporting roller 3.1 and a lower supporting roller 3.2, which are respectively located outside the circumferences of the press rollers 4 of the roller press and closely contact with the press rollers 4, the distance between the upper supporting roller 3.1 and the lower supporting roller 3.2 is one fifth of the outer circumferential length of the press rollers 4 of the roller press, and the distance between the upper supporting roller 3.1 and the lower supporting roller 3.2 is controlled so that the length of the non-woven fabric contacting with the press rollers 4 of the roller press is one fifth of the length of the press rollers 4, and the contact area of the length can completely wipe the press rollers 4 of the roller press.

[0022] The automatic roller wiping device further comprises a solvent spraying device 5, the solvent spraying device 5 comprises a nozzle 5.1, the nozzle 5.1 is located between the upper supporting roller 3.1 and the lower supporting roller 3.2, the solvent spraying device 5 is arranged on the same side of the unwinding roller 1 and the winding roller 2 and located between the unwinding roller 1 and the winding roller 2, and the nozzle 5.1 is located between the upper supporting roller 3.1 and the lower supporting roller 3.2 and close to the lower supporting roller 3.2, in particular, the nozzle 5.1 is close to the lower supporting roller 3.2 and located at one fourth of the distance between the upper supporting roller 3.1 and the lower supporting roller 3.2, and the position of the nozzle 5.1 is arranged in this way, so that the powder on the press rollers 4 of the roller press can be wiped clean while keeping the press rollers 4 of the roller press dry (the remaining three fourths of the non-woven fabric 6 away from the upper supporting roller 3.1 can wipe the solvent and dirt clean).

[0023] In addition, the advancing direction of the non-woven fabric 6 is opposite to the rotating direction of the press rollers 4 of the roller press, and in this embodiment, the press rollers 4 of the roller press rotate counterclockwise, so the advancing direction of the non-woven fabric 6 is from top to bottom. The non-woven fabric 6 passes through the unwinding roller 1, the upper supporting roller 3.1, the lower supporting roller 3.2 and is finally wound by the winding roller 2, and in the advancing process of the non-woven fabric 6, the solvent spraying device 5 sprays solvent through the nozzle 5.1 to further wipe the powder on the press rollers 4 of the roller press clean.

[0024] In addition to the above-mentioned embodiment, the utility model also includes other implementation manners, and any technical scheme formed by equivalent transformation or equivalent replacement should fall within the protection scope of the utility model claim.

Claims

1. An automatic roll wiping device for a lithium battery roll press, characterized by: The automatic wiping roller device comprises a unwinding roller (1) for unwinding the non-woven fabric (6) roll, a winding roller (2) for winding the non-woven fabric (6) after wiping, and a supporting roller (3), wherein the supporting roller (3) comprises an upper supporting roller (3.1) and a lower supporting roller (3.2), which are respectively located outside the circumference of the roller press roller (4) and in close contact with the roller press roller (4); the automatic wiping roller device further comprises a solvent spraying device (5), wherein the solvent spraying device (5) comprises a nozzle (5.1), and the nozzle (5.1) is located between the upper supporting roller (3.1) and the lower supporting roller (3.2).

2. The automatic roll wiping device for a lithium battery roll press according to claim 1, characterized in that: The unwinding roller (1) and the winding roller (2) are arranged in parallel and located on one side of the roller press.

3. The automatic roll cleaning device for a lithium battery roll press according to claim 1, characterized in that: The solvent spraying device (5) is arranged on the same side of the unwinding roller (1) and the winding roller (2) and located between the unwinding roller (1) and the winding roller (2).

4. The automatic roll cleaning device for a lithium battery roll press according to claim 1, characterized in that: The distance between the upper supporting roller (3.1) and the lower supporting roller (3.2) is one fifth of the outer circumference of the roller press roller (4).

5. The automatic roll cleaning device for a lithium battery roll press according to claim 1, characterized in that: The nozzle (5.1) is located between the upper supporting roller (3.1) and the lower supporting roller (3.2) and close to the lower supporting roller (3.2).

6. The automatic roll cleaning device for a lithium battery roll press according to claim 5, characterized in that: The nozzle (5.1) is close to the lower supporting roller (3.2) and located at one fourth of the distance between the upper supporting roller (3.1) and the lower supporting roller (3.2).

7. The automatic roll cleaning device for a lithium battery roll press according to claim 1, characterized in that: The unwinding roller (1) and the winding roller (2) are respectively driven by a motor.

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