CN212856770U

CN212856770U - Cleaning device and coating machine of lithium battery pole piece foil

Info

Publication number: CN212856770U
Application number: CN202021366229.4U
Authority: CN
Inventors: 王冉; 梁鑫; 李华安; 方荣主; 王鹏; 刘金成
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-02
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to a lithium cell production technical field discloses a belt cleaning device and coating machine of lithium-ion battery pole piece foil. The utility model discloses a cleaning device of lithium battery pole piece foil makes the foil pass through upper cleaning roller and lower cleaning roller before the foil is coated, and upper cleaning roller and lower cleaning roller clean the surface of foil, cleans the surface of foil, reduces because of there is impurity or greasy dirt on the foil surface that cause the coated bad, has reduced manufacturing cost; in addition, after the foil is cleaned, the foil is dried in time, the cleaning liquid attached to the foil is prevented from influencing coating, and the production quality and the production efficiency are improved.

Description

Cleaning device and coating machine of lithium battery pole piece foil

Technical Field

The utility model relates to a lithium cell production technical field especially relates to a belt cleaning device and coating machine of lithium-ion battery pole piece foil.

Background

The positive electrode substrate of the lithium ion battery is an aluminum foil, the negative electrode substrate is a copper foil, and the positive electrode substrate and the negative electrode substrate are coated to form a positive electrode sheet roll and a negative electrode sheet roll which are then processed by the next working procedure. The manufacturing quality of the pole piece basically determines certain performances of the battery, and the coating of the pole piece is a very important link in the whole battery manufacturing process. The lithium ion coater used at present is to directly machine the foil material for coating without any treatment. Because there are metal impurity and greasy dirt on the foil surface in the foil in process of production, if not clean up completely when leaving the factory, can lead to thick liquids coating back because impurity or greasy dirt department surface tension is less, forms black spot or shrinkage cavity after the pole piece is dried, influences the quality of battery. Therefore, it is desirable to provide a cleaning device for lithium battery electrode plate foils to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a belt cleaning device and coating machine of lithium-ion battery pole piece foil reduces because of there is impurity or greasy dirt on the foil surface to cause the bad of coating, reduction in production cost.

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

a belt cleaning device of lithium-ion battery pole piece foil material includes:

the cleaning unit comprises an upper cleaning roller and a lower cleaning roller which are arranged up and down, a foil is arranged between the upper cleaning roller and the lower cleaning roller, and two sides of the foil are respectively contacted with the upper cleaning roller and the lower cleaning roller;

and the drying unit is arranged at the downstream of the cleaning unit and is used for drying the cleaned foil.

Preferably, the upper cleaning roller comprises an upper cleaning roller shaft and an upper cleaning sponge coated on the outer side of the upper cleaning roller shaft.

Preferably, the lower cleaning roller comprises a lower cleaning roller shaft and a lower cleaning sponge coated on the outer side of the lower cleaning roller shaft.

Preferably, the first and second electrodes are formed of a metal,

an upper cleaning liquid channel is formed in the axial direction of the upper cleaning roller shaft, and a plurality of upper immersion liquid holes are formed in the side wall of the upper cleaning liquid channel;

and a lower cleaning liquid channel is formed in the axial direction of the lower cleaning roller shaft, and a plurality of lower immersion liquid holes are formed in the side wall of the lower cleaning liquid channel.

Preferably, the lower cleaning liquid channel and the upper cleaning liquid channel are arranged on the same side, and one end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel are communicated through a return pipe, one of the other end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel is connected with a liquid supply device, and the other end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel are connected with a liquid.

Preferably, the drying unit includes:

a gas drive assembly;

a heating assembly for heating air;

the air exhaust assembly is provided with two sets of air exhaust holes which are arranged up and down and oppositely, the foil is arranged between the two sets of air exhaust holes, and the air driving assembly is used for pushing air heated by the heating assembly to the air exhaust holes to be exhausted.

Preferably, the heating assembly comprises a heating shell, and a heating wire is arranged in the heating shell.

Preferably, the gas drive assembly comprises a blower, a blower port of which communicates with the interior of the heating housing.

Preferably, the subassembly of airing exhaust includes the exhaust pipe that the interval set up from top to bottom, the one end of exhaust pipe with the inside intercommunication of heating casing, two the exhaust pipe is all seted up the hole of airing exhaust.

A coating machine comprises the cleaning device for the lithium battery pole piece foil.

The utility model has the advantages that: before the foil is coated, the foil passes through the upper cleaning roller and the lower cleaning roller, and the upper cleaning roller and the lower cleaning roller scrub the surface of the foil to clean the surface of the foil, so that the bad coating caused by impurities or oil stains on the surface of the foil is reduced, and the production cost is reduced; in addition, after the foil is cleaned, the foil is dried in time, the cleaning liquid attached to the foil is prevented from influencing coating, and the production quality and the production efficiency are improved.

Drawings

Fig. 1 is a schematic structural diagram of a cleaning device for lithium battery pole piece foils according to an embodiment of the present invention;

fig. 2 is a top view of the cleaning device for lithium battery pole piece foil provided by the embodiment of the present invention.

In the figure:

1. a cleaning unit; 11. an upper cleaning roller; 111. an upper cleaning roll shaft; 112. cleaning sponge; 12. a lower cleaning roller; 121. a lower cleaning roll shaft; 122. lower cleaning sponge; 13. a return pipe;

2. a drying unit; 21. a gas drive assembly; 22. a heating assembly; 221. heating the housing; 222. heating wires; 23. an air exhaust assembly; 231. an exhaust duct; 232. and air exhaust holes.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

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. 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.

Because there are metal impurity and greasy dirt to adhere to on the foil surface in the production process to the foil among the prior art, if complete clean up when leaving the factory, can lead to behind the thick liquids coating because impurity or greasy dirt department surface tension is less, forms black spot or shrinkage cavity after the pole piece is dried, influences the problem of battery quality, and this embodiment provides a belt cleaning device of lithium cell foil in order to solve above-mentioned problem.

As shown in fig. 1 and 2, the cleaning device for lithium battery pole piece foil provided by this embodiment includes a cleaning unit 1 and a drying unit 2, the cleaning unit 1 includes an upper cleaning roller 11 and a lower cleaning roller 12 which are arranged up and down, the foil is placed between the upper cleaning roller 11 and the lower cleaning roller 12, and two sides of the foil are respectively in contact with the upper cleaning roller 11 and the lower cleaning roller 12. A drying unit 2 is arranged downstream of the washing unit 1, the drying unit 2 being arranged to dry the washed foil. Before the foil is coated, the foil passes through the upper cleaning roller 11 and the lower cleaning roller 12, the upper cleaning roller 11 and the lower cleaning roller 12 scrub the surface of the foil, the surface of the foil is cleaned, poor coating caused by impurities or oil stains on the surface of the foil is reduced, and the production cost is reduced; in addition, the foil is dried in time after being cleaned, so that the influence of cleaning liquid attached to the foil on coating is avoided, and the production quality and the production efficiency are improved.

In this embodiment, the upper cleaning roller 11 includes an upper cleaning roller shaft 111 and an upper cleaning sponge 112 covering the outer side of the upper cleaning roller shaft 111, the upper cleaning sponge 112 can store a certain amount of cleaning liquid, and when the upper cleaning roller 11 contacts with the foil, the upper cleaning sponge 112 scrubs the surface of the foil to achieve the cleaning effect. The upper cleaning roller 11 is mounted on the bracket and can rotate relative to the bracket.

The lower cleaning roller 12 comprises a lower cleaning roller shaft 121 and a lower cleaning sponge 122 coated on the outer side of the lower cleaning roller shaft 121, the lower cleaning sponge 122 can store a certain amount of cleaning liquid, and when the lower cleaning roller 121 is in contact with the foil, the lower cleaning sponge 122 scrubs the surface of the foil to achieve the cleaning effect. The lower wash roller 12 is mounted on the support and is rotatable relative to the support.

Furthermore, the position of the upper cleaning roller 11 or the lower cleaning roller 12 is adjustable, so that the gap between the upper cleaning roller 11 and the lower cleaning roller 12 can be adjusted, two sides of the foil can be well contacted with the upper cleaning roller 11 and the lower cleaning roller 12, and the cleaning effect is improved.

In this embodiment, an upper cleaning liquid channel is formed along the axial direction of the upper cleaning roller shaft 111, a plurality of soaking holes are formed in the side wall of the upper cleaning liquid channel, and the cleaning liquid flowing into the upper cleaning liquid channel is soaked into the upper cleaning sponge 112 through the soaking holes.

The lower cleaning liquid channel is formed in the axial direction of the lower cleaning roller shaft 121, the side wall of the lower cleaning liquid channel is provided with a plurality of lower soaking holes, and the cleaning liquid flowing into the lower cleaning liquid channel is soaked into the lower cleaning sponge 122 through the soaking holes.

Furthermore, one end part of the lower cleaning liquid channel and one end part of the upper cleaning liquid channel, which are arranged on the same side, are communicated through a return pipe 13, one of the other end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel is connected with a liquid supply device, and the other end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel are connected with a liquid recovery device. In this embodiment, the other end of the upper cleaning liquid channel is set as a liquid inlet, the other end of the lower cleaning liquid channel is set as a liquid outlet, the liquid supply device supplies cleaning liquid to enter the upper cleaning liquid channel through the liquid inlet, part of the cleaning liquid infiltrates into the upper cleaning sponge 112 through the liquid immersion hole, part of the cleaning liquid flows into the lower cleaning liquid channel through the return pipe 13, and infiltrates into the lower cleaning sponge 122 through the liquid immersion hole, and redundant cleaning liquid flows into the liquid recovery device through the liquid outlet, so that the accumulation of the cleaning liquid on the foil due to too much cleaning liquid on the lower cleaning sponge 122 is avoided. The liquid reflux equipment can be a recovery barrel, the recovered cleaning liquid is not used any more, and the recovered cleaning liquid can also be circulated into the liquid supply equipment for reutilization. The structure can simultaneously supply cleaning liquid to the upper cleaning roller 11 and the lower cleaning roller 12, and has simple structure and low equipment cost.

In other embodiments, two ends of the upper cleaning liquid channel and the lower cleaning liquid channel are respectively provided as a liquid inlet and a liquid outlet, so as to realize that the upper cleaning roller 11 and the lower cleaning roller 12 are respectively supplied with cleaning liquid.

The drying unit 2 is used for drying the washed foil, so that the influence of cleaning liquid attached to the foil on coating is avoided, and the production quality and the production efficiency are improved. In the present embodiment, the drying unit 2 includes a gas driving assembly 21, a heating assembly 22, and a ventilating assembly 23. Heating element 22 is used for the heated air, and the subassembly of airing exhaust 23 has two sets of holes 232 of airing exhaust of relative setting from top to bottom, and the foil is arranged in between two sets of holes 232 of airing exhaust, and gas drive assembly 21 is used for propelling movement to the hole 232 of airing exhaust with the air that heating element 22 heated and discharges, and the wind that hole 232 of airing exhaust discharged is used for drying the foil.

Further, the heating assembly 22 includes a heating shell 221, a heating wire 222 is disposed in the heating shell 221, and the heating wire 222 is used for heating air in the shell 221, so that the structure is simple, the heating effect is good, and the equipment cost is low.

The gas driving assembly 21 includes a blower, a blower port of which communicates with the inside of the heating housing 221, and which pushes the air heated in the heating housing 221 to the air discharge hole 232 to be discharged.

The exhaust assembly 23 comprises exhaust pipes 231 arranged at upper and lower intervals, one ends of the exhaust pipes 231 are communicated with the interior of the heating shell 221, and exhaust holes 232 are formed in the two exhaust pipes 231. The blower pushes the heated air into the exhaust duct 231 and then exhausts the heated air through the exhaust hole 232. In this embodiment, the cross-section of the exhaust pipes 231 is rectangular, the two exhaust pipes 231 are arranged at intervals up and down, the lower surface of the exhaust pipe 231 arranged above is provided with the exhaust hole 232, and the upper surface of the exhaust pipe 231 arranged below is provided with the exhaust hole 232.

In other embodiments, the drying unit 2 may have other structures, such as a plurality of air nozzles disposed above and below, through which heated air is ejected, etc., and will not be described in detail herein.

The embodiment also provides a coating machine which comprises the cleaning device for the lithium battery pole piece foil. Before the pole piece foil coating, the metal impurities and the oil stains attached to the surface of the foil are cleaned, and the problem that the quality of a battery is influenced due to the fact that after slurry coating, due to the fact that the surface tension of the impurities or the oil stains is small, black spots or shrinkage cavities are formed after the pole piece is dried is avoided.

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 belt cleaning device of lithium-ion battery pole piece foil which characterized in that includes:

the cleaning device comprises a cleaning unit (1), wherein the cleaning unit (1) comprises an upper cleaning roller (11) and a lower cleaning roller (12) which are arranged up and down, a foil is arranged between the upper cleaning roller (11) and the lower cleaning roller (12), and two sides of the foil are respectively contacted with the upper cleaning roller (11) and the lower cleaning roller (12);

and the drying unit (2) is arranged at the downstream of the cleaning unit (1), and the drying unit (2) is used for drying the cleaned foil.

2. The cleaning device for the lithium battery pole piece foil as recited in claim 1, wherein the upper cleaning roller (11) comprises an upper cleaning roller shaft (111) and an upper cleaning sponge (112) coated outside the upper cleaning roller shaft (111).

3. The cleaning device for the lithium battery pole piece foil as recited in claim 2, wherein the lower cleaning roller (12) comprises a lower cleaning roller shaft (121) and a lower cleaning sponge (122) coated outside the lower cleaning roller shaft (121).

4. The cleaning device for lithium battery pole piece foil according to claim 3,

an upper cleaning liquid channel is formed in the axial direction of the upper cleaning roller shaft (111), and a plurality of upper immersion liquid holes are formed in the side wall of the upper cleaning liquid channel;

a lower cleaning liquid channel is formed in the axial direction of the lower cleaning roller shaft (121), and a plurality of lower immersion liquid holes are formed in the side wall of the lower cleaning liquid channel.

5. The device for cleaning the lithium battery pole piece foil according to claim 4, wherein one end part of the lower cleaning liquid channel and one end part of the upper cleaning liquid channel, which are positioned on the same side, are communicated through a return pipe (13), one of the other end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel is connected with a liquid supply device, and the other end of the upper cleaning liquid channel and the other end of the lower cleaning liquid channel are connected with a liquid recovery device.

6. The washing device of lithium battery pole piece foil as claimed in claim 1, wherein the drying unit (2) comprises:

a gas drive assembly (21);

a heating assembly (22) for heating air;

the exhaust assembly (23), the exhaust assembly (23) has two sets of upper and lower just relative exhaust hole (232) that set up, the foil is arranged in two sets of between the exhaust hole (232), gas drive assembly (21) are used for with the air propelling movement of heating element (22) heating extremely exhaust hole (232) are discharged.

7. The cleaning device for the lithium battery pole piece foil as recited in claim 6, wherein the heating assembly (22) comprises a heating shell (221), and a heating wire (222) is arranged in the heating shell (221).

8. The cleaning device for lithium battery pole piece foils according to claim 7, wherein the gas driving assembly (21) comprises a blower, and a blower port of the blower is communicated with the inside of the heating shell (221).

9. The cleaning device for the lithium battery pole piece foil as recited in claim 7, wherein the exhaust assembly (23) comprises exhaust pipes (231) arranged at an interval from top to bottom, one end of each exhaust pipe (231) is communicated with the inside of the heating shell (221), and the exhaust holes (232) are formed in both the exhaust pipes (231).

10. A coater comprising the cleaning apparatus for lithium battery electrode sheet foil according to any one of claims 1 to 9.