CN113699571A - Lithium battery copper foil surface pretreatment device capable of improving material performance - Google Patents

Lithium battery copper foil surface pretreatment device capable of improving material performance Download PDF

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Publication number
CN113699571A
CN113699571A CN202111269697.9A CN202111269697A CN113699571A CN 113699571 A CN113699571 A CN 113699571A CN 202111269697 A CN202111269697 A CN 202111269697A CN 113699571 A CN113699571 A CN 113699571A
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China
Prior art keywords
fixedly connected
copper foil
rods
bracket
rod
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Granted
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CN202111269697.9A
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Chinese (zh)
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CN113699571B (en
Inventor
洪木南
李可心
刘波
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Suzhou Ruili Iot Technology Co ltd
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Suzhou Ruili Iot Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/04—Electroplating with moving electrodes
    • C25D5/06—Brush or pad plating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers

Abstract

The invention relates to the field of lithium batteries, in particular to a lithium battery copper foil surface pretreatment device capable of improving material performance. The technical problem to be solved is as follows: the crystals of the copper foil roughened layer are easily dropped off by the impact of the solution when the second plating resist layer is formed. The technical implementation scheme of the invention is as follows: a lithium battery copper foil surface pretreatment device capable of improving material performance comprises a first mounting rack, a secondary deposition unit, a protection unit and the like; the upper surface of the first mounting rack is connected with a secondary deposition unit for plating a protective layer on the lower surface of the copper foil; and a protective unit for protecting the dendrite on the surface of the copper foil after deposition is connected in the secondary deposition unit. According to the invention, when the copper foil is coated with the protective layer, the dendritic crystals on the copper foil are protected, so that the phenomenon that the dendritic crystals fall off due to the impact of the solution when the loose dendritic crystals on the copper foil enter the coating solution is avoided, and the reduction of the adhesive force between the roughened layer and the resin caused by the falling off of the dendritic crystals is prevented.

Description

Lithium battery copper foil surface pretreatment device capable of improving material performance
Technical Field
The invention relates to the field of lithium batteries, in particular to a lithium battery copper foil surface pretreatment device capable of improving material performance.
Background
With the rapid development of new energy industries, the demand of lithium batteries is increased;
at present, the lithium ion battery has strict requirements on the working environment and performance, and has various requirements on the thickness, the oxidation resistance and the adhesion performance of the copper foil;
because the copper foil has a smooth surface, weak adhesion with resin and weak adhesion performance with the resin, and severely limits the development of lithium batteries, a layer of coarsened dendritic crystals of copper and copper oxide needs to be plated on the surface of the copper foil to increase the roughness of the surface of the copper foil, so that the adhesion between the copper foil and the resin is increased;
the coarsened layer of the dendritic crystal adhered to the surface of the copper foil is loose and easy to fall off, a protective layer needs to be plated on the coarsened layer of the copper foil to protect the dendritic crystal of the coarsened layer, and the crystal of the coarsened layer of the copper foil is easy to fall off under the impact influence of a solution when the protective layer is electroplated for the second time.
According to the above problems, there is a need to develop a surface pretreatment device for copper foil of lithium battery, which can improve material performance, to solve the above problems.
Disclosure of Invention
In order to overcome the defect that the crystal of the copper foil rough layer is easy to fall off due to the impact of a solution when the second electroplating protective layer is formed, the technical problem to be solved is as follows: the surface pretreatment device for the copper foil of the lithium battery can improve material performance.
The technical implementation scheme of the invention is as follows: a lithium battery copper foil surface pretreatment device capable of improving material performance comprises a first base, a first connecting rod and a first mounting rack; the opposite surfaces of the front first base and the rear first base are respectively connected with three first connecting rods; the upper parts of the front three first connecting rods and the upper parts of the rear three first connecting rods are connected with a first mounting frame; the device also comprises a secondary deposition unit and a protection unit; the upper surface of the first mounting rack is connected with a secondary deposition unit for plating a protective layer on the lower surface of the copper foil; and a protective unit for protecting the dendrite on the surface of the copper foil after deposition is connected in the secondary deposition unit.
More preferably, the secondary deposition unit comprises a first arch frame, a first electrolytic cell, a first support, a third connecting rod, a second support, an electric actuator, a fourth connecting rod, a first sliding rod, a U-shaped frame, a fifth connecting rod, a limiting column, a first press roller, a first electric brush and a first electrode; the upper surface of the first mounting frame is fixedly connected with three first arch frames which are arranged at equal intervals; a first electrolytic cell is arranged on the upper surfaces of the three first arch frames; the inner wall of the first electrolytic cell is connected with a first electrode used for conducting the electroplating solution; electrolyte is stored in the first electrolytic cell, and the first electrode is immersed in the electrolyte; the front inner wall and the rear inner wall of the first electrolytic cell are respectively fixedly connected with two limiting columns; the first electrolytic cell is connected with the protection unit; the upper surface of the first arch frame in the middle part is fixedly connected with a first bracket; the first electrolytic cell is positioned at the inner side of the first bracket; an electric actuator is fixedly connected to the upper surface of the first support; the upper part of the first bracket is connected with a first electric brush used for conducting electricity to the copper foil through a soft rope; the upper surfaces of the left and right first arch frames are respectively fixedly connected with a second bracket; the left side and the right side of the first bracket are fixedly connected with a second bracket through two third connecting rods; the first electrolytic cell is positioned at the inner sides of the two second brackets; the two second supports are connected with a protection unit; the upper end of the telescopic part of the electric actuator is fixedly connected with a fourth connecting rod; the lower surface of the fourth connecting rod is fixedly connected with two symmetrical first sliding rods; the electric actuator is positioned between the two first sliding rods; the lower ends of the two first sliding rods are fixedly connected with a U-shaped frame respectively; the two first sliding rods are respectively arranged in the through holes of the two first brackets in a sliding manner; the two first sliding rods are connected with the protection unit; the lower parts of the two U-shaped frames are respectively movably connected with two fifth connecting rods; the four limiting columns respectively slide in the sliding grooves of the four fifth connecting rods; a first press roller is rotatably connected between the two fifth connecting rods at the left part and between the two fifth connecting rods at the right part respectively; four spacing posts are located between two first compression rollers.
More preferably, the protection unit comprises a limiting block, a second slide bar, a third slide bar, a sixth connecting rod, a third bracket, an elastic piece, a first transverse plate, a first guide roller, a fourth slide bar, an installation block, a winding shaft, a fourth bracket, a Y-shaped clamping block, a first rotating shaft and protection cloth; the inner bottom wall of the first electrolytic cell is fixedly connected with four limiting blocks; a second sliding rod is connected between the two second brackets at the rear part; a third sliding rod is connected between the two second brackets in the front part; the left parts of the outer surfaces of the second sliding rod and the third sliding rod are connected with a third support in a sliding manner, and the right parts of the outer surfaces of the second sliding rod and the third sliding rod are connected with a third support in a sliding manner; the lower parts of the two first sliding rods are respectively movably connected with two symmetrically arranged sixth connecting rods; the two sixth connecting rods on the left side and the two sixth connecting rods on the right side are movably connected with a third bracket respectively; the middle parts of the two third brackets are respectively connected with an elastic piece; the lower parts of the two third brackets are respectively connected with a first guide roller in a rotating way; the upper ends of the two elastic pieces are respectively connected with a first transverse plate; four corners of the lower surfaces of the two first transverse plates are fixedly connected with a fourth sliding rod respectively, the four fourth sliding rods on the left side slide in the third support on the left side, and the four fourth sliding rods on the right side slide in the third support on the right side; the lower ends of two adjacent fourth sliding rods are fixedly connected with a mounting block respectively; a winding shaft is respectively and rotatably connected between the two mounting blocks on the left side and between the two mounting blocks on the right side; protective cloth is wound on the two winding shafts; two fourth brackets are fixedly connected to the lower parts of the two third brackets respectively; the lower parts of the four fourth brackets are respectively connected with a first rotating shaft in a rotating way; a Y-shaped clamping block for limiting the mounting block is fixedly connected to each of the four first rotating shafts; the wedge-shaped part of the Y-shaped clamping block is used for driving the mounting block to move downwards; the cross rod part of the Y-shaped clamping block is used for driving the mounting block to move upwards; the pin part of the Y-shaped fixture block is used for touching the limiting block.
More preferably, the device further comprises a dehumidifying unit, the upper surface of the first mounting frame is connected with the dehumidifying unit, and the dehumidifying unit is positioned on the right side of the secondary deposition unit; the dehumidification unit comprises a first support plate, a second rotating shaft, a first rolling shaft, a heat flow component, an air duct, a second support plate, a third rotating shaft, a second rolling shaft, a fourth rotating shaft and a third rolling shaft; two first support plates are fixedly connected to the right part of the upper surface of the first mounting frame; a second rotating shaft is rotatably connected between the two first supporting plates; two symmetrical first rolling shafts are fixedly connected to the second rotating shaft; the right part of the upper surface of the first mounting frame is provided with a heat flow component, and the heat flow component is positioned at the left part of the first supporting plate; the upper part of the heat flow component is fixedly connected with an air duct for uniformly supplying air to the copper foil; two symmetrical second support plates are fixedly connected to the right part of the upper surface of the first mounting frame, and the second support plates are positioned at the left part of the heat flow component; a third rotating shaft is rotatably connected to the upper part between the two second support plates; two second rolling shafts are fixedly connected to the third rotating shaft; a fourth rotating shaft is rotatably connected to the upper part between the two second support plates and is positioned below the third rotating shaft; two third rolling shafts are fixedly connected to the fourth rotating shaft.
More preferably, a plurality of vent holes are formed on the outer circumferential surface of the air duct.
More preferably, the device further comprises a second base, a second connecting rod, a second mounting frame and a primary deposition unit; a second base is arranged on the right of each of the two first bases; the opposite surfaces of the two second bases are respectively connected with three second connecting rods; the upper parts of the front three second connecting rods and the upper parts of the rear three second connecting rods are connected with a second mounting rack; the upper surface of the second mounting rack is connected with a primary deposition unit for increasing the surface roughness of the copper foil; the primary deposition unit comprises a second arched frame, a second electrolytic cell, a second guide roller, a third guide roller, a fifth bracket, a second electric brush and a second electrode; the upper surface of the second mounting frame is fixedly connected with three second arch frames which are arranged at equal intervals; the upper surfaces of the three second arch frames are fixedly connected with a second electrolytic cell; the left part and the inner right part in the second electrolytic cell are respectively and rotatably connected with a second guide roller and a third guide roller; a second electrode for conducting electricity to the solution is arranged on the inner wall of the second electrolytic cell; a fifth bracket is fixedly connected to the upper surface of the second arch frame in the middle, and the second electrolytic cell is positioned on the inner side of the fifth bracket; the middle part of the fifth bracket is connected with a second electric brush used for conducting electricity to the copper foil through a soft rope.
More preferably, the edge flattening device further comprises an edge flattening unit, the upper surface of the second mounting frame is connected with the edge flattening unit for flattening the edges of the two sides of the copper foil material, and the edge flattening unit is positioned on the right side of the primary deposition unit; the edge flattening unit comprises a sixth support, a third support plate, a first transmission rod, a second pressing roller, a first bevel gear, a second transmission rod, a missing gear, a third transmission rod, a straight gear, a first transmission wheel, a fifth rotating shaft and a third pressing roller; a sixth support is fixedly connected to the upper surface of the second mounting frame and is positioned on the right side of the second electrolytic bath; the inner upper side of the sixth bracket is connected with two symmetrically arranged third support plates; the two third support plates are respectively and rotatably connected with a first transmission rod; the two third support plates are respectively and rotatably connected with a fifth rotating shaft; the two first transmission rods are positioned above the two fifth rotating shafts; a second press roller is fixedly connected to each of the two first transmission rods; a third press roller is fixedly connected to each of the two fifth rotating shafts; the opposite ends of the two first transmission rods are fixedly connected with a first bevel gear respectively; the upper part of the sixth bracket is rotationally connected with two symmetrical second transmission rods; the lower parts of the outer surfaces of the two second transmission rods are fixedly connected with a second bevel gear respectively; the second bevel gear is meshed with the first bevel gear; the upper part of the outer surface of the second transmission rod is fixedly connected with a gear lack; the upper part of the sixth bracket is rotatably connected with two third transmission rods, and the two third transmission rods are positioned between the two second transmission rods; the lower parts of the outer surfaces of the two third transmission rods are fixedly connected with a straight gear respectively; the two straight gears are respectively meshed with the adjacent gear lacking; and the outer surfaces of the two third transmission rods are respectively and fixedly connected with a first transmission wheel above the straight gear.
More preferably, the two second press rolls and the two third press rolls are arranged in a shape of a Chinese character 'ba'.
More preferably, the folding device further comprises a folding processing unit, wherein the upper surface of the second mounting frame is connected with the folding processing unit for unfolding the copper foil with the edge folded inwards; the edge flattening unit is connected with the edge folding processing unit, and the edge folding processing unit is positioned on the right side of the edge flattening unit; the flanging processing unit comprises a seventh bracket, a second transverse plate, a fourth guide roller, a fifth guide roller, a fourth transmission rod, a second transmission wheel, a first L-shaped supporting rod, a first limiting piece, a second L-shaped supporting rod and a second limiting piece; a seventh support is fixedly connected to the upper surface of the second mounting frame and is positioned on the right of the sixth support; the upper part of the seventh bracket is fixedly connected with two symmetrical second transverse plates; the two second transverse plates are fixedly connected with a sixth bracket; a fourth guide roller and a fifth guide roller are rotatably connected between the two second transverse plates, and the fourth guide roller is positioned on the right of the fifth guide roller; the upper part of the seventh bracket is connected with two fourth transmission rods through torsion springs; the lower parts of the two fourth transmission rods are fixedly connected with a first L-shaped supporting rod respectively; two first L supporting rods are respectively fixedly connected with a first limiting piece; the lower parts of the two fourth transmission rods are fixedly connected with a second L-shaped supporting rod respectively, and the two second L-shaped supporting rods are positioned below the adjacent first L-shaped supporting rods respectively; two second L supporting rods are respectively fixedly connected with a second limiting piece; the upper parts of the two fourth transmission rods are fixedly connected with a second transmission wheel respectively; the second driving wheel in the front is in transmission connection with the first driving wheel in the front through a belt, and the second driving wheel in the rear is in transmission connection with the first driving wheel in the rear through a belt.
More preferably, the two first limiting members and the two second limiting members are both shaped like a bull horn.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, when the copper foil is coated with the protective layer, the dendritic crystals on the copper foil are protected, so that the phenomenon that the dendritic crystals fall off due to the impact of the solution when the loose dendritic crystals on the copper foil enter the coating solution is avoided, and the reduction of the adhesive force between the roughened layer and the resin caused by the falling off of the dendritic crystals is prevented;
2. according to the invention, the secondary deposition unit is arranged to protect the dendrite deposited on the surface of the copper foil, so that the phenomenon of falling off of the loose dendrite on the surface of the copper foil is effectively avoided, and the adhesive force between the coarsening layer of the copper foil and the resin is enhanced;
3. according to the invention, the protective unit is arranged to protect the dendrite deposited on the surface of the copper foil, so that the phenomenon that the dendrite falls off due to the fact that the solution scours the surface of the copper foil when the dendrite loose on the surface of the copper foil enters the protective layer plating solution is avoided;
4. according to the invention, the edge flattening unit is arranged to flatten the copper foil material with two uneven side edges, so that the phenomenon that dendritic crystals are excessively deposited on uneven parts of the copper foil material when the copper foil material is deposited is avoided;
5. according to the invention, the edge folding processing unit is arranged, so that the copper foil material with the edge part folded inwards is unfolded, and the condition that the inward folded position of the copper foil material cannot be plated with crystal particles is avoided.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of a copper foil surface pretreatment device for a lithium battery according to the present invention for improving material properties;
FIG. 2 is a schematic perspective view of a second embodiment of the copper foil surface pretreatment device for lithium batteries according to the present invention for improving material properties;
FIG. 3 is a front view of the copper foil surface pretreatment device for lithium battery capable of improving material performance according to the present invention;
FIG. 4 is a schematic view of the assembly structure of the copper foil surface pretreatment device for lithium battery capable of improving material performance according to the present invention;
FIG. 5 is a schematic perspective view of a secondary deposition unit of the device for pretreating the copper foil surface of a lithium battery according to the present invention to improve material properties;
FIG. 6 is a schematic perspective view of a protection unit of the device for pretreating the copper foil surface of a lithium battery according to the present invention, wherein the protection unit is capable of improving material properties;
FIG. 7 is a schematic perspective view of a protection unit region of the device for pretreating the copper foil surface of a lithium battery according to the present invention, wherein the protection unit region is capable of improving material performance;
FIG. 8 is a schematic perspective view of a dehumidifying unit of the device for pretreating copper foil surface of lithium battery according to the present invention to improve material properties;
FIG. 9 is a schematic perspective view of a primary deposition unit of the device for pretreating the copper foil surface of a lithium battery according to the present invention to improve material properties;
FIG. 10 is a schematic view of a combined three-dimensional structure of a folding processing unit and an edge flattening unit of the device for pretreating the surface of the copper foil of the lithium battery, which can improve the material performance;
FIG. 11 is a schematic perspective view of an edge leveling unit of the device for pretreating the copper foil surface of a lithium battery according to the present invention to improve material properties;
fig. 12 is a schematic perspective view of a flanging processing unit area of the lithium battery copper foil surface pretreatment device capable of improving material performance.
In the reference symbols: 1-a first base, 2-a first connecting rod, 3-a first mounting frame, 4-a second base, 5-a second connecting rod, 6-a second mounting frame, 101-a first arch, 102-a first electrolytic cell, 103-a first support, 104-a third connecting rod, 105-a second support, 106-an electric actuator, 107-a fourth connecting rod, 108-a first sliding rod, 109-a U-shaped frame, 1010-a fifth connecting rod, 1011-a limiting column, 1012-a first press roller, 1013-a first brush, 1014-a first electrode, 103 a-a through hole, 1010 a-a sliding chute, 201-a limiting block, 202-a second sliding rod, 203-a third sliding rod, 204-a sixth connecting rod, 205-a third support, 206-an elastic element, 207-a first transverse plate, 208-a first guide roller, 209-a fourth slide bar, 2010-a mounting block, 2011-a winding shaft, 2012-a fourth bracket, 2013-a Y-shaped fixture block, 2014-a first rotating shaft, 2015-a protective cloth, 2013 a-a wedge part, 2013 b-a transverse rod part, 2013 c-a pin part, 301-a first support plate, 302-a second rotating shaft, 303-a first rolling shaft, 304-a heat flow component, 305-an air duct, 306-a second support plate, 307-a third rotating shaft, 308-a second rolling shaft, 309-a fourth rotating shaft, 3010-a third rolling shaft, 401-a second arch frame, 402-a second electrolytic cell, 403-a second guide roller, 404-a third guide roller, 405-a fifth bracket, 406-a second electrolytic cell, 403-a second electrode, 501-a sixth bracket, 502-third support plate, 503-first transmission rod, 504-second press roller, 505-first bevel gear, 506-second bevel gear, 507-second transmission rod, 508-missing gear, 509-third transmission rod, 5010-spur gear, 5011-first transmission wheel, 5012-fifth rotating shaft, 5013-third press roller, 601-seventh support, 602-second transverse plate, 603-fourth guide roller, 604-fifth guide roller, 605-fourth transmission rod, 606-second transmission wheel, 607-first L support rod, 608-first limiting piece, 609-second L support rod, 6010-second limiting piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, the electric actuator 106 is an electric push rod, the elastic member 206 is a spring, and the heat flow assembly 304 is a hot air blower.
Example 1
A lithium battery copper foil surface pretreatment device capable of improving material performance is shown in figures 1-3 and comprises a first base 1, a first connecting rod 2, a first mounting rack 3, a secondary deposition unit and a protection unit; the opposite surfaces of the front and the back first bases 1 are respectively connected with three first connecting rods 2; the upper parts of the front three first connecting rods 2 and the upper parts of the rear three first connecting rods 2 are connected with a first mounting rack 3; the upper surface of the first mounting rack 3 is connected with a secondary deposition unit; and a protection unit is connected in the secondary deposition unit.
Before the device for pretreating the surface of the copper foil of the lithium battery, which can improve the material performance, is used, a first mounting rack 3 is placed on a horizontal position through a first connecting rod 2 and a first base 1, vibration buffering is carried out between the first mounting rack 3 and the first base 1 through the first connecting rod 2, then an operator injects a protective layer plating solution into a secondary deposition unit, then the copper foil with dendritic crystals deposited on the lower surface is guided into the secondary deposition unit through peripheral traction equipment, the secondary deposition unit plates a protective layer on the surface of the copper foil, and meanwhile, when the copper foil is immersed into the protective layer plating solution, the dendritic crystals on the lower surface of the copper foil are protected through a protection unit, so that the phenomenon that the loose dendritic crystals on the lower surface of the copper foil fall off due to the impact of the solution when entering the solution is avoided; according to the invention, when the copper foil is coated with the protective layer, the dendritic crystals on the copper foil are protected, so that the phenomenon that the dendritic crystals fall off due to the impact of the solution when the loose dendritic crystals on the copper foil enter the coating solution is avoided, and the reduction of the adhesive force between the roughened layer and the resin caused by the falling off of the dendritic crystals is prevented.
Example 2
On the basis of embodiment 1, according to fig. 1 and fig. 4-7, the secondary deposition unit comprises a first arc 101, a first electrolytic cell 102, a first bracket 103, a third connecting rod 104, a second bracket 105, an electric actuator 106, a fourth connecting rod 107, a first sliding rod 108, a U-shaped bracket 109, a fifth connecting rod 1010, a limiting column 1011, a first pressure roller 1012, a first brush 1013 and a first electrode 1014; the upper surface of the first mounting frame 3 is fixedly connected with three first arch frames 101 which are arranged at equal intervals; a first electrolytic cell 102 is arranged on the upper surfaces of the three first arch frames 101; a first electrode 1014 for conducting electricity to the electroplating solution is connected to the inner wall of the first electrolytic cell 102; the first electrolytic cell 102 has an electrolyte therein, and the first electrode 1014 is immersed in the electrolyte; two limit columns 1011 are fixedly connected to the front inner wall and the rear inner wall of the first electrolytic cell 102 respectively; the first electrolytic cell 102 is connected with a protection unit; a first support 103 is welded on the upper surface of the first arch frame 101 in the middle; the first electrolytic cell 102 is located inside the first support 103; an electric actuator 106 is fixedly connected to the upper surface of the first bracket 103; a first brush 1013 for conducting electricity to the copper foil is connected to the upper part of the first bracket 103 through a flexible cord; the upper surfaces of the left and right first arch frames 101 are respectively fixedly connected with a second bracket 105; the left side and the right side of the first bracket 103 are fixedly connected with a second bracket 105 through two third connecting rods 104; the first electrolytic cell 102 is located inside the two second brackets 105; a protection unit is connected between the two second brackets 105; a fourth connecting rod 107 is fixedly connected to the upper end of the telescopic part of the electric actuator 106; the lower surface of the fourth connecting rod 107 is welded with two symmetrical first sliding rods 108; the electric actuator 106 is located between the two first slide bars 108; the lower ends of the two first sliding rods 108 are respectively welded with a U-shaped frame 109; the two first sliding bars 108 are respectively arranged in the through holes 103a of the two first brackets 103 in a sliding manner; two first slide bars 108 are connected to the guard unit; the lower parts of the two U-shaped frames 109 are respectively movably connected with two fifth connecting rods 1010; the four limit columns 1011 respectively slide in the sliding grooves 1010a of the four fifth connecting rods 1010; a first press roller 1012 is rotatably connected between the two fifth connecting rods 1010 at the left part and between the two fifth connecting rods 1010 at the right part; four restraint posts 1011 are located between the two first rollers 1012.
When an operator guides the copper foil subjected to primary electrodeposition to pass through the lower parts of the two first press rollers 1012 through an external traction device, then the electric actuator 106 starts to extend, the electric actuator 106 drives the fourth connecting rod 107 to drive the two first slide rods 108 to move upwards, then the two first slide rods 108 drive the two U-shaped frames 109 to move upwards, the two U-shaped frames 109 respectively drive the two fifth connecting rods 1010 to move upwards, the four sliding chutes 1010a in the middle of the four fifth connecting rods 1010 move under the limit of the four limit columns 1011, the two fifth connecting rods 1010 on the left side and the fifth connecting rod 1010 on the right side respectively drive the first press rollers 1012 to move downwards, the two first press rollers 1012 press the copper foil downwards to enable the copper foil to be in an inverted open frustum pyramid shape, meanwhile, the first electric brush 1013 contacts the upper surface of the copper foil, the first electric brush 1013 conducts electricity to the copper foil after being electrified, and the first electrode 1014 is plated in a plating solution of the first electrolytic cell 102, the first electrode 1014 is electrified to coat the plating solution, so that a protective layer is coated on the copper foil, the phenomenon that loose dendritic crystals on the copper foil fall off from the copper foil can be effectively avoided, after the protective layer of the copper foil is coated, the electric actuator 106 starts to contract, so that the two fifth connecting rods 1010 on the left and the two fifth connecting rods 1010 on the right respectively drive the first press roller 1012 to move upwards, the copper foil returns to the horizontal position, and the treated part of the copper foil can be transferred out.
The protection unit comprises a limiting block 201, a second sliding rod 202, a third sliding rod 203, a sixth connecting rod 204, a third bracket 205, an elastic piece 206, a first transverse plate 207, a first guide roller 208, a fourth sliding rod 209, a mounting block 2010, a winding shaft 2011, a fourth bracket 2012, a Y-shaped fixture block 2013, a first rotating shaft 2014 and a protection cloth 2015; the inner bottom wall of the first electrolytic cell 102 is fixedly connected with four limiting blocks 201; a second sliding rod 202 is connected between the two second brackets 105 at the rear part; a third sliding rod 203 is connected between the two second brackets 105 in the front part; a third bracket 205 is connected to the left part of the outer surfaces of the second sliding rod 202 and the third sliding rod 203 in a sliding manner, and a third bracket 205 is connected to the right part of the outer surfaces of the second sliding rod 202 and the third sliding rod 203 in a sliding manner; the lower parts of the two first sliding rods 108 are respectively movably connected with two symmetrically arranged sixth connecting rods 204; the two sixth connecting rods 204 on the left and the two sixth connecting rods 204 on the right are respectively movably connected with a third bracket 205; the middle parts of the two third brackets 205 are respectively connected with an elastic part 206; the lower parts of the two third brackets 205 are respectively connected with a first guide roller 208 in a rotating way; the upper ends of the two elastic pieces 206 are respectively connected with a first transverse plate 207; four corners of the lower surfaces of the two first transverse plates 207 are respectively fixedly connected with a fourth slide bar 209, the four fourth slide bars 209 at the left side slide in the third support 205 at the left side, and the four fourth slide bars 209 at the right side slide in the third support 205 at the right side; the lower ends of two adjacent fourth sliding rods 209 are fixedly connected with a mounting block 2010 respectively; a winding shaft 2011 is respectively connected between the two mounting blocks 2010 on the left and between the two mounting blocks 2010 on the right in a rotating manner; protective cloth 2015 is wound on the two winding shafts 2011; two fourth brackets 2012 are respectively fixedly connected to the lower parts of the two third brackets 205; the lower parts of the four fourth brackets 2012 are respectively connected with a first rotating shaft 2014 in a rotating way; a Y-shaped fixture block 2013 for limiting the mounting block 2010 is fixedly connected to each of the four first rotating shafts 2014; the wedge-shaped part 2013a of the Y-shaped fixture block 2013 is used for driving the mounting block 2010 to move downwards; the cross rod part 2013b of the Y-shaped fixture block 2013 is used for driving the mounting block 2010 to move upwards; the pin part 2013c of the Y-shaped fixture block 2013 is used for touching the limiting block 201.
The middle parts of the wedge-shaped part 2013a and the cross rod part 2013b of the Y-shaped fixture block 2013 are provided with empty grooves.
When an operator guides the copper foil to the lower part of the two first compression rollers 1012 and the copper foil is positioned above the protective cloth 2015 through an external traction device, the two first sliding rods 108 are controlled to move upwards, the two first compression rollers 1012 press the copper foil downwards, so that the lower surface of the copper foil is attached to the upper surface of the protective cloth 2015, the two first sliding rods 108 drive the four sixth connecting rods 204 to move upwards while moving upwards, the two sixth connecting rods 204 on the left side and the two sixth connecting rods 204 on the right side drive the two third supports 205 to move oppositely, meanwhile, the copper foil drives the protective cloth 2015 to move downwards while being pressed downwards, meanwhile, a part of the protective cloth 2015 is discharged by the winding shaft 2011, the lower surface of the protective cloth 2015 which is attached to the protective cloth 2015, the protective cloth 2015 plays a role in protecting a dendritic crystal on the lower surface of the copper foil, and the phenomenon that loose dendritic crystals are washed and fall off by the coating liquid when entering the copper foil is avoided, when the two third brackets 205 continue to move towards each other, the pin portions 2013c of the four Y-shaped fixture blocks 2013 contact the four limiting blocks 201, the pin portions 2013c of the Y-shaped fixture blocks 2013 move upwards along the wedge-shaped surfaces of the limiting blocks 201, the Y-shaped fixture blocks 2013 start to rotate around the first rotating shaft 2014, the wedge portions 2013a are inserted into the space above the mounting blocks 2010 and pass through the two sides of the fourth sliding rods 209, so that the mounting blocks 2010 are pressed downwards, each two mounting blocks 2010 drive one winding shaft 2011 to move downwards, the two winding shafts 2011 drive the protective cloth 2015 to move downwards, the protective cloth 2015 is separated from the lower surface of the copper foil, the protective layer is coated on the copper foil under the matching of the first electric brushes 1013 in the first electrolytic cell 102 and the first electrodes 1014, further, when the mounting blocks 2010 move downwards, the two fourth sliding rods 209 are driven to slide and guide in the third brackets 205, and at the same time, every four fourth transverse plates 209 are driven to move downwards, first diaphragm 207 compresses elastic component 206, after the cladding of the protective layer to the copper foil is accomplished, electric actuator 106 begins to contract, realize that two third supports 205 reset, Y-shaped fixture block 2013 breaks away from the limiting displacement of stopper 201 simultaneously, at this moment, elastic component 206 begins to reply, through two mounting blocks 2010 of four fourth slide bar 209 transmission up the motion reset, two rolling shafts 2011 begin to carry out the rolling to protection cloth 2015, until stretching protection cloth 2015 up to the level, operating personnel can shift out the copper foil that has handled.
Example 3
On the basis of the embodiment 2, as shown in fig. 1 and 8, the device further comprises a dehumidifying unit, wherein the dehumidifying unit is connected to the upper surface of the first mounting frame 3 and is positioned on the right side of the secondary deposition unit; the dehumidifying unit comprises a first support plate 301, a second rotating shaft 302, a first roller 303, a heat flow component 304, an air duct 305, a second support plate 306, a third rotating shaft 307, a second roller 308, a fourth rotating shaft 309 and a third roller 3010; two first supporting plates 301 are fixedly connected to the right part of the upper surface of the first mounting rack 3; a second rotating shaft 302 is rotatably connected between the two first supporting plates 301; two symmetrical first rollers 303 are fixedly connected to the second rotating shaft 302; the right part of the upper surface of the first mounting rack 3 is provided with a heat flow assembly 304, and the heat flow assembly 304 is positioned at the left part of the first supporting plate 301; the upper part of the heat flow component 304 is fixedly connected with an air duct 305 for uniformly supplying air to the copper foil; two symmetrical second support plates 306 are fixedly connected to the right part of the upper surface of the first mounting frame 3, and the second support plates 306 are positioned at the left part of the heat flow component 304; a third rotating shaft 307 is rotatably connected between the two second support plates 306; two second rollers 308 are fixedly connected to the third rotating shaft 307; a fourth rotating shaft 309 is rotatably connected between the two second support plates 306 at the upper part, and the fourth rotating shaft 309 is positioned below the third rotating shaft 307; two third rollers 3010 are fixed to the fourth shaft 309.
A plurality of ventilation holes are formed in the outer circumferential surface of the air duct 305.
The copper foil after electro-deposition is guided by an external traction device to pass over the two first rollers 303 and pass between the two second rollers 308 and the two third rollers 3010, at the moment, the heat flow assembly 304 starts to operate, the heat flow assembly 304 blows hot air to the air cylinder 305, the hot air is uniformly dispersed on the surface of the copper foil through a plurality of vent hole structures arranged on the air cylinder 305, moisture on the surface of the copper foil is dried, meanwhile, the hot air blows the middle part of the copper foil, the copper foil is in an upwards-convex curved surface, excessive moisture is not dried in time and flows towards two sides of the copper foil, the moisture is completely absorbed under the matching of the two second rollers 308 and the two third rollers 3010, and then a protective layer is plated on the copper foil; the copper foil between the two first rollers 303 is in a suspended state, the copper foil between the two second rollers 308 is in a suspended state, and the copper foil between the two third rollers 3010 is in a suspended state, so that excessive loss of dendrites on the copper foil can be prevented.
Example 4
On the basis of embodiment 3, as shown in fig. 1 and 9, the device further comprises a second base 4, a second connecting rod 5, a second mounting frame 6 and a primary deposition unit; a second base 4 is respectively arranged on the right of the two first bases 1; the opposite surfaces of the two second bases 4 are respectively connected with three second connecting rods 5; the upper parts of the front three second connecting rods 5 and the upper parts of the rear three second connecting rods 5 are connected with a second mounting rack 6; the upper surface of the second mounting rack 6 is connected with a primary deposition unit for increasing the surface roughness of the copper foil; the primary deposition unit comprises a second arched frame 401, a second electrolytic cell 402, a second guide roller 403, a third guide roller 404, a fifth bracket 405, a second brush 406 and a second electrode 407; the upper surface of the second mounting frame 6 is fixedly connected with three second arch frames 401 which are arranged at equal intervals; the upper surfaces of the three second arch frames 401 are fixedly connected with a second electrolytic cell 402; the left part and the right part inside the second electrolytic cell 402 are respectively connected with a second guide roller 403 and a third guide roller 404 in a rotating way; a second electrode 407 for conducting electricity to the solution is arranged on the inner wall of the second electrolytic cell 402; a fifth bracket 405 is fixedly connected to the upper surface of the second arch frame 401 at the middle part, and the second electrolytic cell 402 is positioned at the inner side of the fifth bracket 405; a second brush 406 for conducting electricity to the copper foil is connected to the middle of the fifth bracket 405 through a flexible cord.
An operator guides the copper foil to the lower parts of the second guide roller 403 and the third guide roller 404 in the second electrolytic cell 402, the lower surface of the copper foil is contacted with the surface of the solution in the second electrolytic cell 402, the second brush 406 is contacted with the surface of the copper foil, the second brush 406 and the second electrode 407 are electrified and act on the electrodeposition solution in the second electrolytic cell 402, a layer of loose dendritic crystals is deposited on the lower surface of the copper foil, the area of the lower surface of the copper foil is effectively increased, the adhesion between the copper foil and resin is stronger, and the protective layer is plated by matching with the dendritic crystals of the copper foil.
Example 5
On the basis of the embodiment 4, as shown in fig. 1 and fig. 10 to 12, the edge flattening device further comprises an edge flattening unit, wherein the edge flattening unit is connected to the upper surface of the second mounting frame 6 and is used for flattening two side edges of the copper foil material, and the edge flattening unit is positioned on the right side of the primary deposition unit; the edge flattening unit comprises a sixth bracket 501, a third support plate 502, a first transmission rod 503, a second pressing roller 504, a first bevel gear 505, a second bevel gear 506, a second transmission rod 507, a missing gear 508, a third transmission rod 509, a straight gear 5010, a first transmission wheel 5011, a fifth rotating shaft 5012 and a third pressing roller 5013; a sixth bracket 501 is fixedly connected to the upper surface of the second mounting frame 6, and the sixth bracket 501 is positioned at the right side of the second electrolytic cell 402; two third support plates 502 which are symmetrically arranged are connected to the inner upper side of the sixth support 501; a first transmission rod 503 is rotatably connected to each of the two third support plates 502; the two third support plates 502 are respectively and rotatably connected with a fifth rotating shaft 5012; the two first transmission rods 503 are located above the two fifth rotating shafts 5012; two second pressing rollers 504 are fixedly connected to the two first transmission rods 503 respectively; a third compression roller 5013 is fixedly connected to each of the two fifth rotating shafts 5012; opposite ends of the two first driving rods 503 are fixedly connected with a first bevel gear 505 respectively; the upper part of the sixth bracket 501 is rotatably connected with two symmetrical second transmission rods 507; the lower parts of the outer surfaces of the two second transmission rods 507 are fixedly connected with a second bevel gear 506 respectively; the second bevel gear 506 is meshed with the first bevel gear 505; the upper part of the outer surface of the second transmission rod 507 is fixedly connected with a gear-lacking wheel 508; two third transmission rods 509 are rotatably connected to the upper part of the sixth bracket 501, and the two third transmission rods 509 are located between the two second transmission rods 507; the lower parts of the outer surfaces of the two third transmission rods 509 are fixedly connected with straight gears 5010 respectively; the two straight gears 5010 are respectively meshed with the adjacent missing gears 508; the outer surfaces of the two third transmission rods 509 are respectively fixedly connected with a first transmission wheel 5011 above the spur gear 5010.
Both the two second press rollers 504 and the two third press rollers 5013 are arranged in a shape of a Chinese character 'ba'.
The copper foil material is well preserved: when the operator guides the copper foil between the two second press rollers 504 and the third press roller 5013, the surface of the copper foil is stuck between the two second press rollers 504 and the third press roller 5013, and since the surface of the copper foil is smooth, the two second press rollers 504 and the third press roller 5013 do not rotate.
The copper foil material has partial defects: when the copper foil raw material is produced and transported, the edge parts of two sides of the copper foil generate buckling deformation, an operator guides the copper foil raw material to pass between the two second pressing rollers 504 and the third pressing roller 5013, the two tilted parts of the copper foil contact the two second pressing rollers 504 and the third pressing roller 5013, the two second pressing rollers 504 and the third pressing roller 5013 which are arranged in a splayed shape flatten the edges of two sides of the copper foil, the copper foil expands from the middle to two sides, when the two second pressing rollers 504 and the third pressing roller 5013 flatten the copper foil, the two second pressing rollers 504 and the third pressing roller 5013 start to rotate, the second pressing roller 504 drives the first transmission rod 503 to drive the first bevel gear 505 to rotate, the first bevel gear 505 drives the second transmission rod 506 to rotate, the second transmission rod 507 drives the missing gear 508 to rotate, when the missing gear 508 is meshed with the straight gear 5010, the missing gear 508 drives the straight gear 5010 to drive the third transmission rod 509 to rotate, the third transmission rod 509 drives the first transmission wheel 5011 to rotate, and when the missing gear 508 does not engage with the spur gear 5010, the spur gear 5010 does not rotate.
The upper surface of the second mounting rack 6 is connected with a folding processing unit for unfolding copper foil with the edge folded inwards; the edge flattening unit is connected with the edge folding processing unit, and the edge folding processing unit is positioned on the right side of the edge flattening unit; the flanging processing unit comprises a seventh bracket 601, a second transverse plate 602, a fourth guide roller 603, a fifth guide roller 604, a fourth transmission rod 605, a second transmission wheel 606, a first L-shaped support rod 607, a first limiting piece 608, a second L-shaped support rod 609 and a second limiting piece 6010; a seventh bracket 601 is fixedly connected to the upper surface of the second mounting bracket 6, and the seventh bracket 601 is positioned on the right of the sixth bracket 501; two symmetrical second transverse plates 602 are fixedly connected to the upper part of the seventh bracket 601; the two second transverse plates 602 are fixedly connected with the sixth bracket 501; a fourth guide roller 603 and a fifth guide roller 604 are rotatably connected between the two second transverse plates 602, and the fourth guide roller 603 is positioned at the right of the fifth guide roller 604; the upper part of the seventh bracket 601 is connected with two fourth transmission rods 605 through torsion springs; the lower parts of the two fourth transmission rods 605 are fixedly connected with a first L-shaped support rod 607 respectively; each of the two first L-shaped support rods 607 is fixedly connected with a first limiting member 608; the lower parts of the two fourth driving rods 605 are respectively fixedly connected with a second L-shaped supporting rod 609, and the two second L-shaped supporting rods 609 are respectively positioned below the adjacent first L-shaped supporting rods 607; each of the two second L struts 609 is fixedly connected with a second limiting member 6010; the upper parts of the two fourth transmission rods 605 are respectively fixedly connected with a second transmission wheel 606; the front second transmission wheel 606 is in transmission connection with the front first transmission wheel 5011 through a belt, and the rear second transmission wheel 606 is in transmission connection with the rear first transmission wheel 5011 through a belt.
The two first limiting members 608 and the two second limiting members 6010 are both shaped like a horn.
The copper foil material is well preserved: the operator guides the copper foil to the upper side of the fourth guide roller 603 and the fifth guide roller 604, the surface of the copper foil is flat and smooth, and the first limiting member 608 and the second limiting member 6010 do not generate acting force on the copper foil.
The copper foil material has partial defects: when the copper foil raw material is produced and transported, the edge portions of two sides of the copper foil are folded and deformed, an operator guides the copper foil to the positions above the fourth guide roller 603 and the fifth guide roller 604 and passes through the space between the first limiting member 608 and the second limiting member 6010, the uneven portions drive the two second press rollers 504 and the third press roller 5013 to rotate, when the missing gear 508 is not meshed with the spur gear 5010, the two first driving wheels 5011 drive the two second driving wheels 606 to rotate, the second driving wheels 606 drive the fourth driving rod 605 to simultaneously drive the first L-shaped support rod 607 and the second L-shaped support rod 609 to rotate, the first L-shaped support rod 607 drives the first limiting member 608 to rotate, the second L-shaped support rod 609 drives the second limiting member 6010 to rotate, the two first limiting members 608 and the second limiting member 0 rotate in the directions close to each other, when the missing gear 601508 is not meshed with the spur gear 5010, the two fourth driving rods 605 start to be opened and reset under the action of the torsion spring, meanwhile, the first limiting member 608 and the second limiting member 6010 rotate in the direction away from each other, the inward-folded deformed portion of the copper foil is unfolded by the bull-horn-shaped structure, and then the unfolded portion is flattened by the two second pressing rollers 504 and the third pressing roller 5013.
The present application is described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A lithium battery copper foil surface pretreatment device capable of improving material performance comprises a first base (1), a first connecting rod (2) and a first mounting rack (3); the opposite surfaces of the front and the back first bases (1) are respectively connected with three first connecting rods (2); the upper parts of the front three first connecting rods (2) and the upper parts of the rear three first connecting rods (2) are connected with a first mounting frame (3); the device is characterized by also comprising a secondary deposition unit and a protection unit; the upper surface of the first mounting rack (3) is connected with a secondary deposition unit for plating a protective layer on the lower surface of the copper foil; and a protective unit for protecting the dendrite on the surface of the copper foil after deposition is connected in the secondary deposition unit.
2. The copper foil surface pretreatment device for lithium batteries capable of improving material properties according to claim 1, wherein the secondary deposition unit comprises a first arch (101), a first electrolytic cell (102), a first bracket (103), a third connecting rod (104), a second bracket (105), an electric actuator (106), a fourth connecting rod (107), a first slide bar (108), a U-shaped bracket (109), a fifth connecting rod (1010), a limiting column (1011), a first pressure roller (1012), a first brush (1013) and a first electrode (1014); the upper surface of the first mounting rack (3) is fixedly connected with three first arch frames (101) which are arranged at equal intervals; a first electrolytic cell (102) is arranged on the upper surfaces of the three first arch frames (101); the inner wall of the first electrolytic cell (102) is connected with a first electrode (1014) used for conducting electricity to the electroplating solution; an electrolyte is stored in the first electrolytic cell (102), and the first electrode (1014) is immersed in the electrolyte; the front inner wall and the rear inner wall of the first electrolytic cell (102) are respectively fixedly connected with two limiting columns (1011); the first electrolytic cell (102) is connected with the protection unit; the upper surface of the first arch frame (101) in the middle part is fixedly connected with a first bracket (103); the first electrolytic cell (102) is positioned inside the first bracket (103); an electric actuator (106) is fixedly connected to the upper surface of the first bracket (103); the upper part of the first bracket (103) is connected with a first electric brush (1013) used for conducting electricity to the copper foil through a soft rope; the upper surfaces of the left and right first arch frames (101) are respectively fixedly connected with a second bracket (105); the left side and the right side of the first bracket (103) are fixedly connected with a second bracket (105) through two third connecting rods (104); the first electrolytic cell (102) is positioned inside the two second brackets (105); a protection unit is connected between the two second brackets (105); a fourth connecting rod (107) is fixedly connected to the upper end of the telescopic part of the electric actuator (106); two symmetrical first sliding rods (108) are fixedly connected to the lower surface of the fourth connecting rod (107); the electric actuator (106) is positioned between the two first slide bars (108); the lower ends of the two first sliding rods (108) are respectively fixedly connected with a U-shaped frame (109); the two first sliding rods (108) are respectively arranged in the through holes (103 a) of the two first brackets (103) in a sliding manner; two first sliding bars (108) are connected with the protection unit; the lower parts of the two U-shaped frames (109) are respectively movably connected with two fifth connecting rods (1010); the four limiting columns (1011) respectively slide in the sliding grooves (1010 a) of the four fifth connecting rods (1010); a first press roller (1012) is rotatably connected between the two fifth connecting rods (1010) at the left part and between the two fifth connecting rods (1010) at the right part respectively; four limiting columns (1011) are positioned between the two first press rollers (1012).
3. The device for pretreating the surface of copper foil of a lithium battery capable of improving material performance according to claim 2, wherein the protection unit comprises a limiting block (201), a second sliding rod (202), a third sliding rod (203), a sixth connecting rod (204), a third bracket (205), an elastic piece (206), a first transverse plate (207), a first guide roller (208), a fourth sliding rod (209), a mounting block (2010), a winding shaft (2011), a fourth bracket (2012), a Y-shaped fixture block (2013), a first rotating shaft (2014) and a protective cloth (2015); the inner bottom wall of the first electrolytic cell (102) is fixedly connected with four limiting blocks (201); a second sliding rod (202) is connected between the two second brackets (105) at the rear part; a third sliding rod (203) is connected in front between the two second brackets (105); a third bracket (205) is connected to the left parts of the outer surfaces of the second sliding rod (202) and the third sliding rod (203) in a sliding manner, and a third bracket (205) is connected to the right parts of the outer surfaces of the second sliding rod (202) and the third sliding rod (203) in a sliding manner; the lower parts of the two first sliding rods (108) are respectively movably connected with two symmetrically arranged sixth connecting rods (204); the two sixth connecting rods (204) on the left side and the two sixth connecting rods (204) on the right side are respectively movably connected with a third bracket (205); the middle parts of the two third brackets (205) are respectively connected with an elastic piece (206); the lower parts of the two third brackets (205) are respectively connected with a first guide roller (208) in a rotating way; the upper ends of the two elastic pieces (206) are respectively connected with a first transverse plate (207); four corners of the lower surfaces of the two first transverse plates (207) are fixedly connected with a fourth sliding rod (209), the four fourth sliding rods (209) on the left side slide in the third support (205) on the left side, and the four fourth sliding rods (209) on the right side slide in the third support (205) on the right side; the lower ends of two adjacent fourth sliding rods (209) are fixedly connected with a mounting block (2010) respectively; a winding shaft (2011) is respectively connected between the two mounting blocks (2010) on the left and between the two mounting blocks (2010) on the right in a rotating manner; protective cloth (2015) is wound on the two winding shafts (2011); two fourth brackets (2012) are respectively fixedly connected to the lower parts of the two third brackets (205); the lower parts of the four fourth brackets (2012) are respectively and rotatably connected with a first rotating shaft (2014); a Y-shaped fixture block (2013) for limiting the mounting block (2010) is fixedly connected to each of the four first rotating shafts (2014); the wedge-shaped part (2013 a) of the Y-shaped fixture block (2013) is used for driving the mounting block (2010) to move downwards; the transverse rod part (2013 b) of the Y-shaped clamping block (2013) is used for driving the mounting block (2010) to move upwards; the pin part (2013 c) of the Y-shaped fixture block (2013) is used for touching the limiting block (201).
4. The surface pretreatment device for copper foil of lithium battery according to claim 3, further comprising a dehumidifying unit, wherein the dehumidifying unit is connected to the upper surface of the first mounting frame (3), and the dehumidifying unit is located at the right of the secondary deposition unit; the dehumidifying unit comprises a first support plate (301), a second rotating shaft (302), a first rolling shaft (303), a heat flow component (304), an air duct (305), a second support plate (306), a third rotating shaft (307), a second rolling shaft (308), a fourth rotating shaft (309) and a third rolling shaft (3010); two first support plates (301) are fixedly connected to the right part of the upper surface of the first mounting frame (3); a second rotating shaft (302) is rotatably connected between the two first support plates (301); two symmetrical first rollers (303) are fixedly connected to the second rotating shaft (302); a heat flow component (304) is arranged on the right part of the upper surface of the first mounting frame (3), and the heat flow component (304) is positioned on the left part of the first support plate (301); the upper part of the heat flow component (304) is fixedly connected with an air duct (305) for uniformly blowing air to the copper foil; two symmetrical second support plates (306) are fixedly connected to the right part of the upper surface of the first mounting frame (3), and the second support plates (306) are located on the left part of the heat flow component (304); a third rotating shaft (307) is rotatably connected to the upper part between the two second support plates (306); two second rollers (308) are fixedly connected to the third rotating shaft (307); a fourth rotating shaft (309) is rotatably connected to the upper part between the two second support plates (306), and the fourth rotating shaft (309) is positioned below the third rotating shaft (307); two third rollers (3010) are fixed on the fourth rotating shaft (309).
5. The surface pretreatment device for copper foil of lithium battery capable of improving material property as claimed in claim 4, wherein a plurality of ventilation holes are formed on the outer circumferential surface of the air duct (305).
6. The surface pretreatment device for copper foil of lithium battery capable of improving material property according to claim 5, further comprising a second base (4), a second connecting rod (5), a second mounting frame (6) and a primary deposition unit; a second base (4) is respectively arranged on the right of the two first bases (1); the opposite surfaces of the two second bases (4) are respectively connected with three second connecting rods (5); the upper parts of the front three second connecting rods (5) and the upper parts of the rear three second connecting rods (5) are connected with a second mounting rack (6); the upper surface of the second mounting rack (6) is connected with a primary deposition unit for increasing the surface roughness of the copper foil; the primary deposition unit comprises a second arched frame (401), a second electrolytic cell (402), a second guide roller (403), a third guide roller (404), a fifth bracket (405), a second brush (406) and a second electrode (407); the upper surface of the second mounting rack (6) is fixedly connected with three second arch frames (401) which are arranged at equal intervals; the upper surfaces of the three second arch frames (401) are fixedly connected with a second electrolytic cell (402); the left part and the right part in the second electrolytic cell (402) are respectively connected with a second guide roller (403) and a third guide roller (404) in a rotating way; a second electrode (407) for conducting electricity to the solution is arranged on the inner wall of the second electrolytic cell (402); a fifth bracket (405) is fixedly connected to the upper surface of the second arch frame (401) in the middle, and the second electrolytic cell (402) is positioned on the inner side of the fifth bracket (405); and a second electric brush (406) used for conducting electricity to the copper foil is connected to the middle part of the fifth bracket (405) through a soft rope.
7. The surface pretreatment device for copper foil of lithium battery capable of improving material property according to claim 6, further comprising an edge flattening unit, wherein the edge flattening unit for flattening both side edges of the copper foil material is connected to the upper surface of the second mounting frame (6), and the edge flattening unit is located at the right of the primary deposition unit; the edge flattening unit comprises a sixth support (501), a third support plate (502), a first transmission rod (503), a second pressing roller (504), a first bevel gear (505), a second bevel gear (506), a second transmission rod (507), a missing gear (508), a third transmission rod (509), a straight gear (5010), a first transmission wheel (5011), a fifth rotating shaft (5012) and a third pressing roller (5013); a sixth support (501) is fixedly connected to the upper surface of the second mounting frame (6), and the sixth support (501) is positioned on the right side of the second electrolytic cell (402); two third support plates (502) which are symmetrically arranged are connected to the inner upper side of the sixth support (501); a first transmission rod (503) is respectively connected to the two third support plates (502) in a rotating way; a fifth rotating shaft (5012) is rotatably connected to each of the two third support plates (502); the two first transmission rods (503) are positioned above the two fifth rotating shafts (5012); two second press rollers (504) are fixedly connected to the two first transmission rods (503) respectively; a third press roller (5013) is fixedly connected to each of the two fifth rotating shafts (5012); opposite ends of the two first transmission rods (503) are fixedly connected with a first bevel gear (505) respectively; the upper part of the sixth bracket (501) is rotationally connected with two symmetrical second transmission rods (507); the lower parts of the outer surfaces of the two second transmission rods (507) are fixedly connected with a second bevel gear (506) respectively; the second bevel gear (506) is meshed with the first bevel gear (505); the upper part of the outer surface of the second transmission rod (507) is fixedly connected with a gear lack (508); two third transmission rods (509) are rotatably connected to the upper part of the sixth bracket (501), and the two third transmission rods (509) are positioned between the two second transmission rods (507); the lower parts of the outer surfaces of the two third transmission rods (509) are fixedly connected with a straight gear (5010) respectively; the two straight gears (5010) are respectively meshed with the adjacent missing gears (508); the outer surfaces of the two third transmission rods (509) are positioned above the straight gears (5010) and are respectively fixedly connected with a first transmission wheel (5011).
8. The surface pretreatment device for copper foil of lithium battery capable of improving material property according to claim 7, wherein the two second press rolls (504) and the two third press rolls (5013) are arranged in a figure of "eight".
9. The surface pretreatment device for the copper foil of the lithium battery capable of improving the material property as claimed in claim 8, further comprising a folding processing unit, wherein the upper surface of the second mounting frame (6) is connected with a folding processing unit for unfolding the copper foil with the edge folded inwards; the edge flattening unit is connected with the edge folding processing unit, and the edge folding processing unit is positioned on the right side of the edge flattening unit; the flanging processing unit comprises a seventh bracket (601), a second transverse plate (602), a fourth guide roller (603), a fifth guide roller (604), a fourth transmission rod (605), a second transmission wheel (606), a first L-shaped support rod (607), a first limiting piece (608), a second L-shaped support rod (609) and a second limiting piece (6010); a seventh support (601) is fixedly connected to the upper surface of the second mounting frame (6), and the seventh support (601) is positioned on the right of the sixth support (501); two symmetrical second transverse plates (602) are fixedly connected to the upper part of the seventh bracket (601); the two second transverse plates (602) are fixedly connected with a sixth bracket (501); a fourth guide roller (603) and a fifth guide roller (604) are rotatably connected between the two second transverse plates (602), and the fourth guide roller (603) is positioned on the right of the fifth guide roller (604); the upper part of the seventh bracket (601) is connected with two fourth transmission rods (605) through torsion springs; the lower parts of the two fourth transmission rods (605) are fixedly connected with a first L-shaped supporting rod (607) respectively; two first L-shaped support rods (607) are respectively fixedly connected with a first limiting piece (608); the lower parts of the two fourth transmission rods (605) are fixedly connected with a second L-shaped supporting rod (609), and the two second L-shaped supporting rods (609) are respectively positioned below the adjacent first L-shaped supporting rods (607); two second L supporting rods (609) are fixedly connected with a second limiting piece (6010) respectively; the upper parts of the two fourth transmission rods (605) are respectively fixedly connected with a second transmission wheel (606); the second driving wheel (606) in front is in transmission connection with the first driving wheel (5011) in front through a belt, and the second driving wheel (606) in rear is in transmission connection with the first driving wheel (5011) in rear through a belt.
10. The surface pretreatment device for copper foil of lithium battery according to claim 9, wherein the two first position-limiting members (608) and the two second position-limiting members (6010) are each shaped like a cow horn.
CN202111269697.9A 2021-10-29 2021-10-29 Lithium battery copper foil surface pretreatment device capable of improving material performance Active CN113699571B (en)

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