CN113102188A - Slurry double-side coating device - Google Patents
Slurry double-side coating device Download PDFInfo
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- CN113102188A CN113102188A CN202110452761.0A CN202110452761A CN113102188A CN 113102188 A CN113102188 A CN 113102188A CN 202110452761 A CN202110452761 A CN 202110452761A CN 113102188 A CN113102188 A CN 113102188A
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- 238000000576 coating method Methods 0.000 title claims abstract description 95
- 239000011248 coating agent Substances 0.000 title claims abstract description 93
- 239000002002 slurry Substances 0.000 title claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 184
- 238000003825 pressing Methods 0.000 claims abstract description 47
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 66
- 238000004804 winding Methods 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052744 lithium Inorganic materials 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 14
- 239000007787 solid Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229920002799 BoPET Polymers 0.000 description 10
- 239000012528 membrane Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000011267 electrode slurry Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 239000006258 conductive agent Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 239000006256 anode slurry Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000006257 cathode slurry Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006255 coating slurry Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a slurry double-sided coating device, which comprises a first pole coating device and a second pole coating device; the first pole coating device comprises a first feeding mechanism, a first pole pair roller rolling device is arranged at the discharge end of the first feeding mechanism, and a first feeding roller set and a second feeding roller set are respectively arranged on two sides of the first pole pair roller rolling device; the second pole coating device comprises a second feeding mechanism, a second pole pair roller pressing device is arranged on the discharge portion of the second feeding mechanism, a third feeding roller set is arranged on one side of the second pole pair roller pressing device, and the other side of the second pole pair roller pressing device is connected with the discharge end of the first pole pair roller pressing device, so that the second pole coating device and the first pole coating device are continuously arranged. The invention realizes double-sided coating, can be directly processed into an unpackaged battery core, simplifies the process, improves the production efficiency, can disperse and coat the slurry with high solid content, solves the quality problem and the cost problem of the lithium battery caused by low-viscosity coating, and is suitable for all double-sided coated slurry.
Description
Technical Field
The invention belongs to the field of lithium battery production, and relates to a coating device, in particular to a slurry double-sided coating device.
Background
Slurry coating, namely, making a positive electrode material or a negative electrode material of a lithium battery into slurry, uniformly coating and adhering the slurry on a current collector to form a lithium battery pole piece, and is an important process section for producing the lithium battery. After the slurry is coated, the positive pole piece and the negative pole piece are rolled and cut conventionally, and then wound or laminated, and then a series of procedures such as packaging, drying, liquid injection and the like are carried out, so that the lithium battery is manufactured.
The existing coating device carries out single-side coating on the anode slurry or the cathode slurry, and after the coating is finished, a lamination or winding step is needed, namely, a positive pole piece and a negative pole piece are overlapped to form a laminated structure, so that the subsequent process can be carried out. The single-side coating device can only coat one side at a time, and the coating is overlapped after the coating is finished, so that the working procedure is complicated, and the efficiency is low.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a slurry double-side coating device so as to achieve the purpose of coating slurry on double sides.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a slurry double-side coating device comprises a first pole coating device and a second pole coating device;
the first pole coating device comprises a first feeding mechanism, a first pole pair roller rolling device is arranged at one end of a discharge port of the first feeding mechanism, and a first feeding roller set and a second feeding roller set are respectively arranged at two sides of the first pole pair roller rolling device;
the second pole coating device comprises a second feeding mechanism, a second pole pair roller pressing device is arranged at one end of a discharge port of the second feeding mechanism, a third feeding roller set is arranged on one side of the second pole pair roller pressing device, and the other side of the second pole pair roller pressing device is connected with the discharge end of the first pole pair roller pressing device, so that the second pole coating device and the first pole coating device are continuously arranged along the processing direction.
As a limitation of the present invention: the first feeding roller group comprises a first unwinding mechanism and a first flattening mechanism which are sequentially connected; the second feeding roller group comprises a second unwinding mechanism and a second flattening mechanism which are sequentially connected; the third feeding roller group comprises a third unwinding mechanism and a third unwinding mechanism which are sequentially connected.
As a limitation of the present invention: first feed mechanism and second feed mechanism all include the feeder hopper and are used for carrying the feeding device of thick liquids to the feeder hopper, be provided with the scattering device who is used for breaing up thick liquids in the feeder hopper.
As a further limitation of the invention: the first feeding roller group further comprises a first functional film unwinding mechanism and a first functional film winding mechanism, wherein the first functional film unwinding mechanism discharges materials to the first flattening mechanism and receives materials from corresponding rollers in the first pole-to-roller device through the first functional film winding mechanism; the second feeding roller group further comprises a second functional film unwinding mechanism and a second functional film winding mechanism, the second functional film unwinding mechanism discharges materials to the second flattening mechanism, and the materials are collected by corresponding coating rollers in the first pole-to-roll rolling device through the second functional film winding mechanism; the third feeding roller group further comprises a third functional film unwinding mechanism and a third functional film winding mechanism, wherein the third functional film unwinding mechanism discharges materials to the third stretching mechanism, and the materials are collected by corresponding coating rollers in the second polar pair roller device through the third functional film winding mechanism.
As a further limitation of the invention: the scattering device is arranged at the discharge end of the material conveying device and is any one of a rotary scattering device, a vibration scattering device and an airflow scattering device; the rotary scattering device comprises a scattering wheel and a motor for driving the scattering wheel, and the scattering wheel is any one of a hair wheel, a thorn wheel and a knife wheel; the vibration scattering device comprises a vibration source; the air flow scattering device comprises an air pipe and an air outlet connected with the air pipe, and the air flow direction of the air outlet and the discharging direction of the material conveying device are arranged at an angle.
As still further limiting the invention: and a rubberizing mechanism and a caching mechanism are sequentially arranged between the second unwinding mechanism and the second unwinding mechanism.
As still further limiting the invention: an alignment device, a steering roller, a first pole drying device, a first pole thickness detection device, a cache mechanism and a gluing mechanism are arranged between the first pole pair roller pressing device and the second pole pair roller pressing device.
As still further limiting the invention: the feed hopper is arranged vertically or parallel to the feeding direction of the corresponding pair roller pressing device.
As a further limitation of the invention: and the discharge end of the second polar pair roller pressing device is provided with an aligning device, a steering roller, a composite film drying device, a thickness shaping device, a thickness detection device and a tracking cutting device.
As a further limitation of the invention: be provided with the vibration source that makes the feeder hopper vibration on the feeder hopper, when the feeder hopper sets up perpendicularly with the pan feeding direction of corresponding pair roller roll-in device, the feeder hopper is the toper, when the feeder hopper sets up with the pan feeding direction parallel arrangement of corresponding pair roller roll-in device, the feeder hopper includes and puts into the function board that the bed of material is the acute angle with corresponding pair roller roll-in device, the function board is close to the bed of material along the pan feeding direction of pair roller roll-in device gradually, forms the inclined plane, the both sides of function board still are provided with the baffle.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the composite lithium battery paper is provided with the first pole coating device and the second pole coating device which are continuous along the processing direction, the coating of the first pole is realized through the first feeding mechanism and the first pole pair roller pressing device, the second pole slurry is coated on the back side of the first pole through the second feeding mechanism and the second pole pair roller pressing device, the double-side coating of the slurry is realized, the diaphragm of the composite lithium battery paper produced by the device is in the middle, the negative pole material and the current collector are arranged on one side of the diaphragm, and the positive pole material and the current collector are arranged on the other side of the diaphragm, so that an unpacked battery cell is formed, the winding or lamination is not needed, the working procedure is simplified, and the production efficiency is improved;
(2) the feeding mechanism comprises a feeding device and a dispersing device, wherein a double-screw conveyer in the feeding device can convey the slurry with high solid content, and a rotary dispersing device, a vibration dispersing device and a gas dispersing device in the dispersing device can effectively disperse the slurry with high solid content, so that the lithium battery slurry can be coated in a state of high viscosity (paste) and even ultrahigh viscosity (block), the possibility of the problems of layering of the slurry with low viscosity, agglomeration of active substances and a conductive agent and the like is reduced, the subsequent drying time is shortened, the energy consumption is reduced, and the efficiency is improved.
In conclusion, the invention realizes double-sided coating, can be directly processed into an unpackaged battery core, simplifies the process, improves the production efficiency, can disperse and coat the slurry with high solid content, solves the quality problem and the cost problem of the lithium battery caused by low-viscosity coating, and is suitable for all double-sided coated slurry.
Drawings
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural view of a feeding mechanism in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a feeding mechanism in embodiment 2 of the present invention;
FIG. 4 is a schematic structural view of a feeding mechanism in embodiment 3 of the present invention;
FIG. 5 is a schematic structural view of a feeding mechanism in embodiment 4 of the present invention;
FIG. 6 is a schematic structural view of a feeding mechanism in embodiment 5 of the present invention.
In the figure: 1-a first feeding mechanism, 2-a first pole-to-roll rolling device, 3-a coating roll, 4-a negative electrode current collector, 5-a diaphragm, 6-a first unreeling mechanism, 7-a first unreeling mechanism, 8-a second unreeling mechanism, 9-a second unreeling mechanism, 10-a rubberizing mechanism, 11-a caching mechanism, 12-a negative electrode film, 13-an aligning device, 14-a first functional film unreeling mechanism, 15-a first functional film reeling mechanism, 16-a PET film, 17-a second functional film unreeling mechanism, 18-a second functional film reeling mechanism, 19-absorbent paper, 20-a steering roll, 21-a first pole drying device, 22-a first pole thickness detecting device, 23-a second feeding mechanism, 24-a second pole-to-roll rolling device, 25-a third unwinding mechanism, 26-a thickness setting device, 27-a third unwinding mechanism, 28-a positive electrode current collector, 29-a composite film, 30-a third functional film unwinding mechanism, 31-a third functional film winding mechanism, 32-a composite film drying device, 33-a second electrode thickness detection device, 34-a tracking cutting device, 36-a feed hopper, 361-a functional plate, 362-an anti-splash plate, 37-a barrel, 38-a double-screw conveyor, 39-a barrel feeding port, 40-a barrel discharging head, 41-a discharging port, 42-a vibration source, 43-a scattering wheel, 44-an air pipe, 45-an air outlet, 46-a blocking roller, 47-a leveling roller and 48-a supporting roller.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the slurry double-side coating apparatus described herein is a preferred embodiment, is for the purpose of illustration and explanation only, and is not to be construed as limiting the invention.
The terms "upper", "lower", "left", "right" and the like in the present invention are used in terms of orientation or positional relationship based on the drawings in the present specification, and are only for convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that a device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus should not be construed as limiting the contents of the present invention.
EXAMPLE 1 slurry double-side coating apparatus
In this embodiment, as shown in fig. 1 and fig. 2, the slurry double-side coating device includes a first electrode coating device and a second electrode coating device, and the first electrode coating device and the second electrode coating device are continuously disposed along the processing direction. Of course, the first pole coating device may also be used to coat the negative pole slurry, and the second pole coating device may also be used to coat the positive pole slurry.
The first pole coating device comprises a first feeding mechanism 1 used for inputting negative pole slurry to the device, a first pole pair roller rolling device 2 is arranged at one end of a discharge port of the first feeding mechanism 1, and a first feeding roller set and a second feeding roller set are respectively arranged on two sides of the first pole pair roller rolling device 2. The material that sets up on first pan feeding roller set and the second pan feeding roller set can be selected as required according to production, in this embodiment, is provided with negative pole mass flow body 4 on the first pan feeding roller set, is provided with diaphragm 5 on the second pan feeding roller set. The first feeding roller set comprises a first unwinding mechanism 6 and a first flattening mechanism 7 which are connected in sequence, and therefore, the first unwinding mechanism 6 in this embodiment is a negative current collector unwinding mechanism. The second feeding roller set comprises a second unwinding mechanism 8 and a second unwinding mechanism 9 which are connected in sequence, and therefore, the second unwinding mechanism 8 in this embodiment is a diaphragm unwinding mechanism. Further, a gluing mechanism 10 and a buffering mechanism 11 are sequentially arranged between the diaphragm unwinding mechanism and the second unwinding mechanism 9.
As shown in fig. 1, the direction of the arrow is the material conveying direction. The negative current collector 4 and the diaphragm 5 are pulled out by a corresponding unwinding mechanism, and are respectively rolled into two coating rollers 3 of a first pole-to-roll rolling device 2 after passing through a corresponding flattening mechanism, the negative slurry is smeared on the negative current collector 4 or the diaphragm 5 or between the negative current collector and the diaphragm 5 through a first feeding mechanism 1, and is tightly pressed through the rolling of the first pole-to-roll rolling device 2, so that the compounding of the diaphragm 5 and the negative slurry is completed, and the negative film 12 with a sandwich structure, of which the two sides are respectively the negative current collector 4 and the diaphragm 5, is formed. In order to correct the deviation of the composite process, an alignment device 13 is arranged at the discharge end of the first pole pair roller pressing device 2, and after the cathode film 12 is discharged, the alignment degree of the cathode film 12 is adjusted in real time through alignment detection of the alignment device 13.
Further, first pan feeding roller set still includes first function membrane unwinding mechanism 14 and first function membrane winding mechanism 15, and in this embodiment, first function membrane is PET (polyethylene terephthalate) membrane 16, and correspondingly, first function membrane unwinding mechanism 14 is PET membrane unwinding mechanism, and first function membrane winding mechanism 15 is PET membrane winding mechanism. The PET film unwinding mechanism discharges materials to the first unwinding mechanism 7, and the coating rolls 3 corresponding to the first pole pair roll rolling device 2 receive the materials through the PET film winding mechanism. The arrangement of the PET film 16 can prevent dry slurry from penetrating through the meshes of the meshed current collector and adhering to the corresponding coating roller 3, so that the first functional film unwinding mechanism 14 and the first functional film winding mechanism 15 can be omitted when the negative current collector 4 is a foil without holes.
Similarly, the second feeding roller set also includes a second functional film unwinding mechanism 17 and a second functional film winding mechanism 18, in this embodiment, the second functional film is absorbent paper 19, correspondingly, the second functional film unwinding mechanism 17 is an absorbent paper unwinding mechanism, and the second functional film winding mechanism 18 is an absorbent paper winding mechanism. The imbibing paper unwinding mechanism discharges materials to the second unwinding mechanism 9, and the materials are collected by the coating rollers 3 corresponding to the first pole pair roller rolling device 2 through the imbibing paper winding mechanism. The setting of imbibition paper 19 can absorb surplus solvent in the thick liquids to improve the efficiency of toasting.
After the cathode film 12 is discharged, the alignment degree of the cathode film 12 is adjusted in real time through the alignment detection of the alignment device 13. The aligned anode film 12 is turned by a turning roll 20 so that the side thereof having the separator 5 faces upward for the subsequent application of the cathode paste. The turned negative electrode film 12 is subjected to surface drying by a first electrode drying device 21, thickness detection by a first electrode thickness detection device 22, a certain tension of the negative electrode film is kept by a buffer mechanism 11, and surface rubberizing is performed by a rubberizing mechanism 10.
The second pole coating device comprises a second feeding mechanism 23 used for inputting the anode slurry into the device, and a second pole pair roller pressing device 24 is arranged at one end of a discharge hole of the second feeding mechanism 23. The other side of the second polar pair roller pressing device 24 is connected with the discharge end of the first polar pair roller pressing device 2, namely the treated negative electrode film 12 is used as a feeding material of the second polar pair roller pressing device 24 and is coated on the coating roller 3 on one side of the second polar pair roller pressing device 24, so that the second polar coating device and the first polar coating device are continuously arranged along the processing direction. The other side of the second polar pair roller rolling device 24 is provided with a third feeding roller set, and the third feeding roller set comprises a third unreeling mechanism 25 and a third unreeling mechanism 27 which are connected in sequence. The material that sets up on the third pan feeding roller set can be selected as required according to production, and in this embodiment, be provided with anodal mass flow body 28 on the third pan feeding roller set, consequently, third unwinding mechanism 25 in this embodiment is anodal mass flow body unwinding mechanism.
As shown in fig. 1 (the arrow direction in the figure is the material conveying direction), the positive current collector 28 is pulled out by the positive current collector unwinding mechanism, passes through the third flattening mechanism 27, and is respectively wound with the negative electrode film 12 onto the two coating rollers 3 of the second polar pair roller pressing device 24, because the negative electrode film 12 turns around by the turning roller 20, the diaphragm side of the negative electrode film 12 faces upwards, the positive electrode slurry is coated on the other side of the negative electrode current collector 4 of the diaphragm 5 by the second feeding mechanism 23, and is pressed tightly by the second polar pair roller pressing device 24, so that the compounding of the negative electrode film 12 and the positive electrode slurry is completed, and the composite film 29 with the sandwich structure of "negative electrode slurry-diaphragm-positive electrode slurry-positive electrode current collector" is formed. In order to correct the deviation of the composite process, an alignment device 13 is arranged at the discharge end of the second polar pair roller pressing device 24, and after the composite film 29 is discharged, the alignment degree of the composite film 29 is adjusted in real time through alignment detection of the alignment device 13.
Further, the third feeding roller set further includes a third functional film unwinding mechanism 30 and a third functional film winding mechanism 31. In this embodiment, the third functional film is a PET film 16, the corresponding third functional film unwinding mechanism 30 is a PET film unwinding mechanism, and the third functional film winding mechanism 31 is a PET film winding mechanism. The PET film unwinding mechanism 30 discharges the material to the third stretching mechanism 27, and the material is collected by the coating roll 3 in the second polar pair roll rolling device 24 through the PET film winding mechanism. The arrangement of the PET film can prevent dry slurry from penetrating through the meshes of the mesh-shaped current collector and adhering to the corresponding coating roller 3, so that when the positive current collector 28 is a foil without holes, the third functional film unwinding mechanism 30 and the third functional film winding mechanism 31 may not be used.
As shown in fig. 1 (the arrow direction in the figure is the material conveying direction), after the composite film 29 is discharged, the alignment degree of the composite film 29 is adjusted in real time through the alignment detection of the alignment device 13. After the alignment of the composite film 29, the turning of the turning roll 20, the surface drying by the composite film drying device 32, the shaping by the thickness shaping device 26, and the thickness detection by the second pole thickness detection device 33 are completed, in order to improve the precision of the composite film 29, the surface drying, the thickness shaping and the thickness detection can be repeated once or many times, in this embodiment, the composite film 29 is turned and then subjected to the surface drying, the thickness shaping and the thickness detection twice. After the above steps are completed, the film is laminated by the tracking and cutting device 34 to be made into composite lithium battery paper with different lengths for use, and at this time, an unpackaged battery core is formed.
The coating device in the embodiment uniformly coats the slurry through the double-roller rolling device, and the mode has higher requirements on the physical state of the slurry, such as lower kinematic viscosity, better self-leveling property, better adhesive property and the like of the slurry. The slurry mainly comprises a positive electrode material or a negative electrode material of the lithium battery, a conductive agent, a bonding agent, a solvent and the like, so that in order to enable the slurry to meet the physical property requirement of the coating process on the slurry, a large amount of solvent is required to be added into the slurry to reduce the viscosity in the mixing and stirring process of the slurry, and the purpose of meeting the coating process is achieved. However, the slurry with low viscosity is easy to separate layers, active substances and conductive agents are easy to agglomerate, the internal resistance of the lithium battery is increased, all solvents are required to be baked out in subsequent drying, and a series of cost problems such as high energy consumption and solvent recovery are caused during drying.
In order to solve the above problem, the present embodiment improves the feeding mechanism, so that the slurry double-side coating apparatus in the present embodiment can perform coating of the high-solid-content slurry. As shown in fig. 2, which is a schematic diagram of the internal structure of the first feeding mechanism 1 and the second feeding mechanism 23 (the arrow direction in the figure is the material moving direction and the device moving direction), since the first feeding mechanism 1 and the second feeding mechanism 23 have the same structure, the internal structure of only one of the feeding mechanisms (hereinafter referred to as a feeding mechanism) will be described. It should be noted that, in this embodiment, for simplicity of expression, the first feeding mechanism 1 and the second feeding mechanism 23 adopt the same structure, and in practical applications, the first feeding mechanism 1 and the second feeding mechanism 23 may be any one of the structures in this embodiment or other embodiments as required, and the following is the same.
The feeding mechanism includes feeder hopper 36 and the feeding device that is used for carrying thick liquids to feeder hopper 36, feeding device includes barrel 37, the defeated material screw means that sets up in barrel 37 is used for driving the motor of defeated material screw means, in this embodiment, defeated material screw means is twin screw conveyor 38, of course, defeated material screw means also can be for other structures that can carry high solid content material such as auger, be provided with barrel feed inlet 39 and barrel stub bar 40 on barrel 37, barrel stub bar 40 stretches into in feeder hopper 36, to the feed hopper 36 feed. The feeding hopper 36 is arranged perpendicular to the feeding direction of the corresponding pair of roller pressing devices, that is, the feeding hopper 36 in this embodiment is arranged perpendicular to the feeding layer of the corresponding pair of roller pressing devices, the feeding hopper 36 is of a conical structure, the lower end of the conical structure is a discharging port 41 of the feeding mechanism, in this embodiment, an opening of the discharging port 41 faces a gap formed between two coating rollers 3 of the corresponding pair of roller pressing devices, and of course, an opening of the discharging port 41 may also face above any coating roller 3 of the corresponding pair of roller pressing devices. In order to make the slurry more uniform, the discharge port 41 may be provided with a structure having a sieving function, such as a mesh or a bar hole, and of course, the discharge port 41 may also be an open structure. Further, in order to make the slurry more uniform and dispersed, a vibration source 42 for vibrating the feed hopper is provided on the feed hopper 36, and the vibration source 42 may be any one of common vibration devices such as a pneumatic vibrator, an electric vibration table, and a pressure point crystal vibration head.
A scattering device for scattering the slurry is arranged in the feed hopper 36, the scattering device in this embodiment is a rotary scattering device, the rotary scattering device comprises a scattering wheel 43 and a motor for driving the scattering wheel, the scattering wheel 43 is arranged towards the discharge head 40 of the cylinder, and the scattering wheel 43 can be any one of a hair wheel, a thorn wheel and a knife wheel.
The high solid content slurry enters the cylinder 37 from the cylinder feed inlet 39, is conveyed to the cylinder discharge head 40 by the double screw conveyor 38, is scattered by the scattering wheel 43, falls on the inner wall of the feed hopper 36, is vibrated by the feed hopper 36, and finally flows out of the discharge outlet 41 to enter the corresponding double-roller rolling device. The slurry flowing out of the discharge port 41 is uniform in texture and high in density consistency, and the formed composite lithium battery paper is excellent in performance.
When the embodiment is used, the cathode slurry with high solid content is placed into the material conveying device of the first feeding mechanism 1, the slurry is conveyed by the material conveying device, enters the feeding hopper 36, is scattered by the scattering device and falls onto the first pole pair roller rolling device 2, compounding of the negative electrode slurry, the negative electrode current collector 4 and the diaphragm 5 is completed through a first pole pair roller rolling device 2 to form a negative electrode film 12, after the negative electrode film 12 is aligned, turned, dried, subjected to thickness detection, cached and glued, and coating the positive electrode slurry by a second feeding mechanism, forming a composite film 29 by a second polar pair roller pressing device 24, and forming the composite lithium battery paper with a sandwich structure of 'negative electrode current collector-negative electrode slurry-diaphragm-positive electrode slurry-positive electrode current collector' after aligning, turning, drying, thickness shaping, thickness detection, tracking and cutting the composite film 29.
EXAMPLE 2 slurry double-side coating apparatus
This embodiment is a slurry double-side coating device as shown in fig. 3 (the arrow direction in the figure is the material moving direction and the device moving direction), and the structure of this embodiment is substantially the same as that of embodiment 1, except for the structure of the first feeding mechanism 1 and the second feeding mechanism 23. In the embodiment, the first feeding mechanism 1 is the same as the second feeding mechanism 23, and for the sake of simplifying the description, only the internal structure of one of the feeding mechanisms will be described, and the first feeding mechanism 1 and the second feeding mechanism 23 will be collectively referred to as a feeding mechanism, which is the same below.
The feeding device and the hopper 36 of the feeding mechanism of this embodiment have the same structure as that of embodiment 1, except that the opening of the discharge port 41 of this embodiment is directed to the upper side of the right coating roll 3 of the corresponding counter-roll rolling device, and the scattering device of the hopper 36 is a vibration scattering device. The vibration scattering device comprises a vibration source 42, the vibration source 42 is arranged at the discharge end of the material conveying device, and the vibration direction of the vibration source 42 is perpendicular to the discharge direction of the material conveying device, so that the slurry with high solid content output by the material conveying device is uniformly cut under the vibration of the vibration source 42, and the dispersion effect is achieved. The vibration source 42 may be any one of conventional vibration devices such as a pneumatic vibrator, an electric vibration table, a piezoelectric crystal vibration head, and the like.
The application method of this embodiment is substantially the same as that of embodiment 1, except that the slurry with high solid content of this embodiment is placed into a material conveying device, conveyed by the material conveying device, enters a feed hopper 36, is broken up by a vibration breaking device, and then falls onto a corresponding pair roller rolling device.
EXAMPLE 3 slurry double-side coating apparatus
This embodiment is a slurry double-side coating device as shown in fig. 4 (the arrow direction in the figure is the material moving direction and the device moving direction), and the structure of this embodiment is substantially the same as that of embodiment 1, except for the structure of the feeding mechanism.
The feeding device and the hopper 36 of the feeding mechanism of this embodiment have the same structure as that of embodiment 1, except that the opening of the discharge port 41 of this embodiment is directed to the upper side of the left coating roll 3 of the corresponding counter-roll rolling device, and the scattering device in the hopper 36 is an air flow scattering device. The airflow scattering device comprises an air pipe 44, an air source is connected to the upper end of the air pipe 44 (the air source part is omitted in the drawing for clearer expression), an air outlet 45 is connected to the lower end of the air pipe 44, the airflow direction of the air outlet 45 and the discharging direction of the material conveying device are arranged in an angle mode, high-solid-content slurry output by the material conveying device can be cut uniformly under the high-pressure air of the air outlet 45, and accordingly the dispersing effect is achieved. Further, in order to make the cutting effect better, the air flow direction of the air outlet 45 is perpendicular to the discharging direction of the material conveying device in this embodiment.
The present embodiment is substantially the same as the application method of embodiment 1, except that the slurry with high solid content in the present embodiment is placed into a material conveying device, conveyed by the material conveying device, enters a feeding hopper 36, is broken up by an air flow breaking device, and then falls onto a first pole pair roller pressing device.
EXAMPLE 4 slurry double-side coating apparatus
This embodiment is a slurry double-side coating device as shown in fig. 5 (the arrow direction in the figure is the material moving direction and the device moving direction), and the structure of this embodiment is substantially the same as that of embodiment 1, except for the structure of the feeding mechanism.
The structure of the feeding device of the feeding mechanism of this embodiment is the same as that of embodiment 1, except for the structure and the arrangement position of the feed hopper 36. The feeding hopper 36 is parallel to the feeding direction of the corresponding pair of roller pressing devices in this embodiment, the feeding hopper 36 is a box structure, the right side of the box structure is the discharging port 41 of the feeding mechanism, and the opening of the discharging port 41 faces the upper side of the left coating roller 3 of the corresponding roller pressing device in this embodiment. A scattering device for scattering the slurry is provided in the hopper 36, the structure of the scattering device in this embodiment is the same as that in embodiment 1, a resist roller 46 for preventing the slurry from scattering upward after being scattered is further provided in the hopper for rotating the scattering device, and the rotation of the resist roller 46 is driven by a motor. In order to ensure the smoothness of the slurry at the discharge port 41, a smoothing roller 47 is further arranged at the discharge port 41, and the rotation of the smoothing roller 47 is driven by a motor. In order to smooth the operation, support rollers 48 are provided below the leveling rollers 47 and the hopper 36 to provide support for the leveling rollers 47 and the hopper 36.
The application method of this embodiment is substantially the same as that of embodiment 1, except that the slurry with high solid content in this embodiment is placed into a material delivery device, transported by the material delivery device, enters a feed hopper 36, is scattered by a rotating scattering device and blocked by a blocking roller 46, falls onto a corresponding roll-to-roll pressing and placing material layer, and is input into a corresponding roll-to-roll pressing device after being rotated and leveled by a leveling roller 47.
EXAMPLE 5 slurry double-side coating apparatus
This embodiment is a slurry double-side coating device as shown in fig. 6 (the arrow direction in the figure is the material moving direction and the device moving direction), and the structure of this embodiment is substantially the same as that of embodiment 1, except for the structure of the feeding mechanism.
The structure of the feeding device of the feeding mechanism of this embodiment is the same as that of embodiment 1, except for the structure and the arrangement position of the feed hopper 36. The feeding hopper 36 is parallel to the feeding direction of the corresponding pair roller pressing device in this embodiment, a scattering device for scattering the slurry is provided in the feeding hopper, and the structure of the scattering device in this embodiment is the same as that in embodiment 1, and is a rotary scattering device.
The feeding hopper 36 comprises a function board 361 forming an acute angle with a corresponding double-roller pressing device material inlet layer, the function board 361 is gradually close to the material inlet layer along the material inlet direction of the double-roller pressing device to form an inclined surface with a floating function, the lower edge of the function board 361 has a certain distance with the corresponding double-roller pressing device material inlet layer, the floating thickness of the slurry is controlled by controlling the distance, in order to enable the floating to be more uniform and enable the scattered slurry to be continuously coated, a vibration source 42 is arranged on the function board 361 and can enable the scattered slurry attached to the function board 361 to vibrate and fall down, and the vibration source 42 can be any one of common vibration devices such as a pneumatic vibrator, an electric vibration table and a pressure point crystal vibration head. In addition, baffles are arranged on two sides of the functional board 361, and the baffles can keep the width of the slurry consistent. Further, a splash guard 362 is disposed on the functional board 361 toward the feeding device to prevent the slurry from splashing toward the feeding device under the action of the scattering device.
The application method of this embodiment is substantially the same as that of embodiment 1, except that the slurry with high solid content in this embodiment is placed into a material conveying device, conveyed by the material conveying device, enters a feed hopper 36, is scattered by a rotary scattering device, falls onto a corresponding pair of roller pressing devices, is placed on a material layer, is leveled by a function board 361, and is input into the corresponding pair of roller pressing devices.
Claims (10)
1. A two-sided coating unit of thick liquids which characterized in that: comprises a first pole coating device and a second pole coating device;
the first pole coating device comprises a first feeding mechanism, a first pole pair roller rolling device is arranged at one end of a discharge port of the first feeding mechanism, and a first feeding roller set and a second feeding roller set are respectively arranged at two sides of the first pole pair roller rolling device;
the second pole coating device comprises a second feeding mechanism, a second pole pair roller pressing device is arranged at one end of a discharge port of the second feeding mechanism, a third feeding roller set is arranged on one side of the second pole pair roller pressing device, and the other side of the second pole pair roller pressing device is connected with the discharge end of the first pole pair roller pressing device, so that the second pole coating device and the first pole coating device are continuously arranged along the processing direction.
2. The apparatus for coating both sides of slurry according to claim 1, characterized in that: the first feeding roller group comprises a first unwinding mechanism and a first flattening mechanism which are sequentially connected; the second feeding roller group comprises a second unwinding mechanism and a second flattening mechanism which are sequentially connected; the third feeding roller group comprises a third unwinding mechanism and a third unwinding mechanism which are sequentially connected.
3. The apparatus for coating both sides of slurry according to claim 2, characterized in that: the first feeding roller group further comprises a first functional film unwinding mechanism and a first functional film winding mechanism, wherein the first functional film unwinding mechanism discharges materials to the first flattening mechanism and receives materials from corresponding rollers in the first pole-to-roller device through the first functional film winding mechanism; the second feeding roller group further comprises a second functional film unwinding mechanism and a second functional film winding mechanism, the second functional film unwinding mechanism discharges materials to the second flattening mechanism, and the materials are collected by corresponding coating rollers in the first pole-to-roll rolling device through the second functional film winding mechanism; the third feeding roller group further comprises a third functional film unwinding mechanism and a third functional film winding mechanism, wherein the third functional film unwinding mechanism discharges materials to the third stretching mechanism, and the materials are collected by corresponding coating rollers in the second polar pair roller device through the third functional film winding mechanism.
4. The apparatus for coating both sides of slurry according to claim 3, characterized in that: and a rubberizing mechanism and a caching mechanism are sequentially arranged between the second unwinding mechanism and the second unwinding mechanism.
5. The apparatus for coating both sides of slurry according to claim 3, characterized in that: an alignment device, a steering roller, a first pole drying device, a first pole thickness detection device, a cache mechanism and a gluing mechanism are arranged between the first pole pair roller pressing device and the second pole pair roller pressing device.
6. The apparatus for coating both sides of slurry according to claim 5, characterized in that: and the discharge end of the second polar pair roller pressing device is provided with an aligning device, a steering roller, a composite film drying device, a thickness shaping device, a thickness detection device and a tracking cutting device.
7. The slurry double-side coating device according to any one of claims 1 to 6, characterized in that: first feed mechanism and second feed mechanism all include the feeder hopper and are used for carrying the feeding device of thick liquids to the feeder hopper, be provided with the scattering device who is used for breaing up thick liquids in the feeder hopper.
8. The apparatus for coating both sides of slurry according to claim 7, characterized in that: the scattering device is arranged at the discharge end of the material conveying device and is any one of a rotary scattering device, a vibration scattering device and an airflow scattering device; the rotary scattering device comprises a scattering wheel and a motor for driving the scattering wheel, and the scattering wheel is any one of a hair wheel, a thorn wheel and a knife wheel; the vibration scattering device comprises a vibration source; the air flow scattering device comprises an air pipe and an air outlet connected with the air pipe, and the air flow direction of the air outlet and the discharging direction of the material conveying device are arranged at an angle.
9. The apparatus for coating both sides of slurry according to claim 8, characterized in that: the feed hopper is arranged vertically or parallel to the feeding direction of the corresponding pair roller pressing device.
10. The apparatus for coating both sides of slurry according to claim 9, characterized in that: be provided with the vibration source that makes the feeder hopper vibration on the feeder hopper, when the feeder hopper sets up perpendicularly with the pan feeding direction of corresponding pair roller roll-in device, the feeder hopper is the toper, when the feeder hopper sets up with the pan feeding direction parallel arrangement of corresponding pair roller roll-in device, the feeder hopper includes and puts into the function board that the bed of material is the acute angle with corresponding pair roller roll-in device, the function board is close to the bed of material along the pan feeding direction of pair roller roll-in device gradually, forms the inclined plane, the both sides of function board still are provided with the baffle.
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| CN202110452761.0A CN113102188A (en) | 2021-04-26 | 2021-04-26 | Slurry double-side coating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169158A1 (en) * | 2022-03-09 | 2023-09-14 | 宁德时代新能源科技股份有限公司 | Feeding device and base material processing apparatus |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030215710A1 (en) * | 2002-03-07 | 2003-11-20 | Paul-Andre Lavoie | Positive electrode films for alkali metal polymer batteries and method for making same |
| US20060016549A1 (en) * | 2004-07-26 | 2006-01-26 | Regis Gagnon | Process and apparatus for laminating components of an electrochemical cell |
| KR101704636B1 (en) * | 2016-08-25 | 2017-02-09 | 한국기계연구원 | Ink-coating device for preventing contamination of coating head, and apparatus for coating conductive film including the device |
| CN206168511U (en) * | 2016-11-08 | 2017-05-17 | 四川什邡市星天丰科技有限公司 | A machine is broken up to air -flowing type for packing among level calcium sulfate preparation technology |
| CN109351793A (en) * | 2018-12-03 | 2019-02-19 | 恩力能源科技有限公司 | Battery pole piece extrusion device and battery pole piece manufacturing system |
| CN208878965U (en) * | 2018-09-03 | 2019-05-21 | 台州钱江新能源研究院有限公司 | Porous substrate apparatus for coating |
| CN210700857U (en) * | 2019-09-20 | 2020-06-09 | 般若涅利（北京）装备技术有限公司 | Lithium ion battery pole piece coating machine |
| CN113102159A (en) * | 2021-04-26 | 2021-07-13 | 般若涅利（北京）装备技术有限公司 | High-viscosity battery slurry rotary scattering feeding device, coating device and coating method |
| CN214766608U (en) * | 2021-04-26 | 2021-11-19 | 般若涅利（北京）装备技术有限公司 | Slurry double-side coating device |
-
2021
- 2021-04-26 CN CN202110452761.0A patent/CN113102188A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030215710A1 (en) * | 2002-03-07 | 2003-11-20 | Paul-Andre Lavoie | Positive electrode films for alkali metal polymer batteries and method for making same |
| US20060016549A1 (en) * | 2004-07-26 | 2006-01-26 | Regis Gagnon | Process and apparatus for laminating components of an electrochemical cell |
| KR101704636B1 (en) * | 2016-08-25 | 2017-02-09 | 한국기계연구원 | Ink-coating device for preventing contamination of coating head, and apparatus for coating conductive film including the device |
| CN206168511U (en) * | 2016-11-08 | 2017-05-17 | 四川什邡市星天丰科技有限公司 | A machine is broken up to air -flowing type for packing among level calcium sulfate preparation technology |
| CN208878965U (en) * | 2018-09-03 | 2019-05-21 | 台州钱江新能源研究院有限公司 | Porous substrate apparatus for coating |
| CN109351793A (en) * | 2018-12-03 | 2019-02-19 | 恩力能源科技有限公司 | Battery pole piece extrusion device and battery pole piece manufacturing system |
| CN210700857U (en) * | 2019-09-20 | 2020-06-09 | 般若涅利（北京）装备技术有限公司 | Lithium ion battery pole piece coating machine |
| CN113102159A (en) * | 2021-04-26 | 2021-07-13 | 般若涅利（北京）装备技术有限公司 | High-viscosity battery slurry rotary scattering feeding device, coating device and coating method |
| CN214766608U (en) * | 2021-04-26 | 2021-11-19 | 般若涅利（北京）装备技术有限公司 | Slurry double-side coating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169158A1 (en) * | 2022-03-09 | 2023-09-14 | 宁德时代新能源科技股份有限公司 | Feeding device and base material processing apparatus |
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