CN112536194A - Double-roller coating equipment for solid energy storage electrode strip - Google Patents

Double-roller coating equipment for solid energy storage electrode strip Download PDF

Info

Publication number
CN112536194A
CN112536194A CN201910890519.4A CN201910890519A CN112536194A CN 112536194 A CN112536194 A CN 112536194A CN 201910890519 A CN201910890519 A CN 201910890519A CN 112536194 A CN112536194 A CN 112536194A
Authority
CN
China
Prior art keywords
extrusion
solid
electrode strip
energy storage
feeding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910890519.4A
Other languages
Chinese (zh)
Inventor
辛民昌
李长明
吴超
辛程勋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Original Assignee
Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Jiuhuan Xinyue New Energy Technology Co ltd filed Critical Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Priority to CN201910890519.4A priority Critical patent/CN112536194A/en
Publication of CN112536194A publication Critical patent/CN112536194A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/043—Processes of manufacture in general involving compressing or compaction
    • H01M4/0435—Rolling or calendering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a solid-state energy storage electrode strip double-roller coating device, which comprises: the unwinding mechanism is used for unwinding the electrode strip compounded with the electrode active layer; the extrusion coating device is used for extrusion coating the solid ion conductor layer on the electrode active layer to obtain a solid energy storage electrode strip; the winding mechanism is used for winding the solid energy storage electrode strip; the extrusion coating device comprises an extrusion roller set, wherein the extrusion roller set comprises two extrusion rollers with mutually parallel axes; feeding devices for feeding solid ion conductor materials are arranged on the feeding sides of the two extrusion rollers; a guide roller set used for enabling the electrode strip to pass through between the two squeezing rollers is arranged between the unreeling mechanism and the reeling mechanism. The solid energy storage electrode strip double-roll coating equipment can compound a layer of solid ion conductor layer on the electrode active layer of the electrode strip so as to enhance the binding force and the wettability between the solid ion conductor and the electrode and reduce the interface resistance between the solid ion conductor and the electrode.

Description

Double-roller coating equipment for solid energy storage electrode strip
Technical Field
The invention belongs to the technical field of mechanical equipment, and particularly relates to solid-state energy storage electrode strip double-roller coating equipment.
Background
Solid state batteries are a battery technology. Unlike lithium ion batteries and lithium ion polymer batteries that are currently in widespread use, a solid-state battery is a battery that uses a solid electrode and a solid electrolyte. The traditional liquid lithium battery is also called as a rocking chair type battery by scientists visually, wherein two ends of the rocking chair are provided with the positive pole and the negative pole of the battery, and the middle part of the rocking chair is provided with electrolyte (liquid). The lithium ions run back and forth at the two ends of the rocking chair just like excellent athletes, and the charging and discharging process of the battery is completed in the movement process of the lithium ions from the positive pole to the negative pole and then to the positive pole. The principle of the solid-state battery is the same as that of the solid-state battery, but the electrolyte is solid, and the density and the structure of the solid-state battery can enable more charged ions to be gathered at one end to conduct larger current, so that the battery capacity is improved. Therefore, the solid-state battery will become smaller in volume for the same amount of power. Moreover, because the solid-state battery has no electrolyte, the sealing is easier, and when the solid-state battery is used on large-scale equipment such as automobiles, cooling pipes, electronic controls and the like do not need to be additionally arranged, so that the cost is saved, and the weight can be effectively reduced.
Although the existing solid-state battery can meet the use requirements to a certain extent, the following defects still exist:
1) the binding force between the solid-state ion conductor and the electrode is insufficient;
2) the wettability between the solid-state ion conductor and the electrode is poor;
3) the interface resistance between the solid-state ion conductor and the electrode is large.
Disclosure of Invention
In view of the above, the present invention provides a solid energy storage electrode strip dual-roll coating apparatus, which can combine a solid ion conductor layer on an electrode active layer of an electrode strip to enhance the bonding force and wettability between the solid ion conductor and an electrode, and can reduce the interfacial resistance between the solid ion conductor and the electrode active layer.
In order to achieve the purpose, the invention provides the following technical scheme:
a solid-state energy storage electrode strip twin roll coating apparatus comprising:
the unwinding mechanism is used for unwinding the electrode strip compounded with the electrode active layer;
the extrusion coating device is used for extrusion coating the solid ion conductor layer on the electrode active layer to obtain a solid energy storage electrode strip;
the winding mechanism is used for winding the prepared solid energy storage electrode strip;
the extrusion coating device comprises an extrusion roller set, wherein the extrusion roller set comprises two extrusion rollers with mutually parallel axes; feeding devices for feeding solid ion conductor materials are arranged on the feeding sides of the two extrusion rollers;
and a guide roller set used for enabling the electrode strip to pass through between the two squeezing rollers is arranged between the unwinding mechanism and the winding mechanism.
Further, a roll gap adjusting mechanism for adjusting the roll gap is arranged between the two extrusion rolls.
Further, when the electrode strip is in contact fit with one of the squeezing rollers, the feeding device comprises a feeding mechanism for feeding the solid ion conductor material on the side of the electrode strip facing the other squeezing roller.
When extrusion gaps are respectively arranged between the electrode strip and the two extrusion rollers; the feeding device comprises two feeding mechanisms which are respectively used for feeding the solid ion conductor materials on two sides of the electrode strip.
Further, when the axes of the two extrusion rollers are positioned on the same horizontal plane, the feeding side is arranged above the two extrusion rollers.
Further, when extrusion gaps are respectively arranged between the electrode strip and the two extrusion rollers; the guide rollers guide the electrode strip to pass through between the two squeezing rollers along a vertically downward direction.
Further, the guide rollers guide the electrode strip material and make the extrusion gaps between the electrode strip material and the two extrusion rollers equal, or make the difference value of the extrusion gaps between the electrode strip material and the two extrusion rollers within a set range.
Furthermore, the feeding device also comprises stirring and dispersing equipment for stirring and dispersing the solid ion conductor material, and the feeding mechanism is connected with a discharge hole of the stirring and dispersing equipment.
Furthermore, the feeding device also comprises two feeding tanks positioned above the extrusion rollers, and the discharge end of the feeding mechanism is positioned in the feeding tanks.
Further, be equipped with in the feed tank and be used for driving solid-state ion conductor material and continue follow the drive roller of the discharge gate ejection of compact of feed tank.
Further, a control area for controlling temperature and dryness is included.
Furthermore, the control area comprises an extrusion control area and a shaping control area, wherein the extrusion control area is arranged corresponding to the extrusion roller set, and the shaping control area is positioned on the discharge side of the extrusion roller set.
Further, the sizing control area comprises a plurality of sizing control subareas which are sequentially arranged along the conveying direction of the solid energy storage electrode strip.
Furthermore, a shaping roller set used for controlling the thickness of the electrode strip is arranged in the shaping control subarea, and each shaping roller set comprises two shaping rollers which are correspondingly arranged.
Further, adjacent two sets of in the design roller set, be located the upstream side two of design roller set the roll gap more than or equal to between the design roller set that is located the downstream side two the roll gap between the design roller.
The invention has the beneficial effects that:
according to the double-roller coating equipment for the solid energy storage electrode strip, the solid ion conductor material is coated on the electrode active layer of the electrode strip in an extrusion manner through the extrusion roller set, so that the binding force and the wettability between the solid ion conductor layer and the electrode strip can be effectively guaranteed, and the interface resistance between the solid ion conductor layer and the electrode active layer is reduced. When the solid-state energy storage device is used, the solid-state ion conductor layers of the adjacent solid-state energy storage electrode strips are compounded together or fused into a whole, and then the solid-state energy storage device (comprising a solid-state battery and a solid-state capacitor) can be obtained; in conclusion, the solid-state energy storage electrode strip material produced by the double-roller coating equipment for the solid-state energy storage electrode strip material can effectively simplify the production process, enhance the combination degree and the wettability between the solid-state ion conductor layer and the electrode active layer, reduce the interface resistance between the solid-state ion conductor layer and the electrode active layer and improve the ion permeability.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic structural diagram of a solid energy storage electrode strip double-roll coating device 1 in an embodiment of the invention;
fig. 2 is a schematic structural diagram of a solid energy storage electrode strip double-roll coating device in embodiment 2 of the invention.
Description of reference numerals:
1-an electrode strip; 2-solid state energy storage electrode strip;
10-an unwinding mechanism;
20-a winding mechanism;
31-a squeeze roll; 32-a feeding mechanism; 33-a guide roll; 34-a feed tank; 35-a drive roller; 41-extrusion control zone; 42-sizing a control zone; 43-sizing roller.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Example 1
Fig. 1 is a schematic structural diagram of a solid energy storage electrode strip double-roll coating device in an embodiment 1 of the invention. The solid-state energy storage electrode strip double-roller coating device comprises:
the unwinding mechanism 10 is used for unwinding the electrode strip 1 compounded with the electrode active layer;
the extrusion coating device is used for extrusion coating the solid ion conductor layer on the electrode active layer and obtaining a solid energy storage electrode strip material 2;
the winding mechanism 20 is used for winding the prepared solid energy storage electrode strip 2;
the extrusion coating device comprises an extrusion roller group, wherein the extrusion roller group comprises two extrusion rollers 31 with mutually parallel axes; feeding devices for feeding solid ion conductor materials are arranged on the feeding sides of the two extrusion rollers 31;
a guide roller set used for enabling the electrode strip 1 to pass through between the two squeezing rollers 31 is arranged between the unreeling mechanism 10 and the reeling mechanism 20, and the guide roller set comprises a plurality of guide rollers 33.
Further, a roll gap adjusting mechanism for adjusting a roll gap is arranged between the two squeezing rolls 31, and the thickness of the solid ion conductor layer extruded and coated on the electrode active layer can be controlled by adjusting the roll gap between the two squeezing rolls 31.
Further, when the electrode strip 1 is in contact fit with one of the squeeze rollers 31, i.e., a squeezing gap is provided between the electrode strip 1 and the other squeeze roller 31, the feeding device includes a feeding mechanism 32 for feeding the solid ion conductor material on the side of the electrode strip 1 facing the other squeeze roller 31. When extrusion gaps are respectively arranged between the electrode strip material 1 and the two extrusion rollers 31; the feeding device comprises two feeding mechanisms 32 which are respectively used for feeding the solid ion conductor materials on two sides of the electrode strip material 1. The electrode strip 1 of this embodiment and the two squeezing rollers 31 are respectively provided with a squeezing gap therebetween, and the two feeding mechanisms 32 are respectively located on two sides of the electrode strip 1, that is, the electrode active layers are respectively disposed on two sides of the electrode strip 1 of this embodiment.
Further, when the axes of the two extrusion rollers 31 are located on the same horizontal plane, the feeding side is located above the two extrusion rollers 31, and the solid ion conductor material is filled in the extrusion gap by using the gravity action, so that the extrusion coating effect is improved. Extrusion gaps are respectively arranged between the electrode strip material 1 and the two extrusion rollers 31; the guide roller 33 guides the electrode strip 1 to pass through between the two squeezing rollers 31 along the vertical downward direction, so that the thickness of the solid ion conductor layer compounded on the two sides of the electrode strip 1 is more uniform. Specifically, the guide roller 33 guides the electrode strip 1 so that the pressing gaps between the electrode strip 1 and the two pressing rollers 31 are equal, or so that the difference between the pressing gaps between the electrode strip 1 and the two pressing rollers 31 is within a set range. The extrusion gap between the electrode strip 1 and the two extrusion rollers 31 is equal, that is, the thicknesses of the solid ion conductor layers respectively compounded on the two sides of the electrode strip 1 are equal.
Further, the feeding device also comprises a stirring dispersion device for stirring and dispersing the solid ion conductor material, and the feeding mechanism 32 is connected with a discharge hole of the stirring dispersion device, so that the solid ion conductor material can be uniformly dispersed, and the uniformity of the solid ion conductor material is improved. The feeding device of this embodiment further includes a feeding tank 34 located above the two squeezing rollers 31, the discharge end of the feeding mechanism 32 is located in the feeding tank 34, and the feeding tank 34 serves to temporarily store the solid ion conductor material and guide the solid ion conductor material into the squeezing gap. The driving roller 35 for driving the solid ion conductor material to be continuously discharged from the discharge port of the feeding tank 34 is arranged in the feeding tank 34 of the embodiment, so that the colloidal solid ion conductor material or the slurry of the solid ion conductor material can be continuously discharged from the discharge port of the feeding tank 34, and the solid ion conductor material can be uniformly extruded and coated on the electrode strip 1.
Further, the solid-state energy storage electrode strip double-roll coating device of the embodiment further comprises a control area for controlling the temperature and the dryness. Specifically, the control area includes an extrusion control area 41 corresponding to the extrusion roller set and a shaping control area located on the discharge side of the extrusion roller set. The sizing control area of the embodiment comprises a plurality of sizing control subareas 42 which are sequentially arranged along the conveying direction of the solid energy storage electrode strip material, so that the technical purpose of subarea control can be realized. The shaping control partition 42 of the present embodiment is provided with shaping roller sets for controlling the thickness of the electrode strip 1, and each of the shaping roller sets includes two shaping rollers 43 correspondingly disposed. Specifically, in two adjacent sets of sizing roller sets, the roll gap between two sizing rollers 43 of the upstream sizing roller set is greater than or equal to the roll gap between two sizing rollers 43 of the downstream sizing roller set.
The solid-state energy storage electrode strip double-roll coating equipment of the embodiment extrudes and coats the solid-state ion conductor material on the electrode active layer of the electrode strip through the extrusion roll group, can effectively ensure the binding force and the wettability between the solid-state ion conductor layer and the electrode strip, and reduces the interface resistance between the solid-state ion conductor layer and the electrode active layer. When the solid-state energy storage device is used, the solid-state ion conductor layers of the adjacent solid-state energy storage electrode strips are compounded together or fused into a whole, and then the solid-state energy storage device (comprising a solid-state battery and a solid-state capacitor) can be obtained; in summary, the solid-state energy storage electrode strip produced by the double-roll coating device for the solid-state energy storage electrode strip of the embodiment can effectively simplify the production process, enhance the combination degree and the wettability between the solid-state ion conductor layer and the electrode active layer, reduce the interface resistance between the solid-state ion conductor layer and the electrode active layer, and improve the ion permeability.
The following describes a specific embodiment of the method for coating a solid-state energy storage electrode strip with two rollers in combination with the above solid-state energy storage electrode strip coating apparatus.
The solid-state energy storage electrode strip double-roller coating method comprises the following steps:
an extrusion coating process of extruding and forming a solid ion conductor layer on the electrode active layer of the electrode strip 1 by using an extrusion roller set;
in the extrusion coating process, the roll gap between two extrusion rollers 31 is adjusted to a set range, and solid ion conductor materials subjected to stirring dispersion treatment are added to the feeding sides of the two extrusion rollers 31; and driving the two extrusion rollers 31 to rotate, enabling the tangential velocity of the extrusion rollers 31 to be equal to the velocity of the electrode strip material 1 passing between the two extrusion rollers 31, and extruding and coating the solid ion conductor material on the electrode active layer of the electrode strip material 1 by using the extrusion rollers 31 and forming a solid ion conductor layer to obtain the solid energy storage electrode strip material 2.
Further, when the electrode active layers are disposed on the two side surfaces of the electrode strip 1 in this embodiment, extrusion gaps are respectively disposed between the electrode strip 1 and the two extrusion rollers 31, the solid ion conductor materials subjected to the stirring and dispersing treatment are respectively added into the extrusion gaps on the two sides of the electrode strip 1, and solid ion conductor layers are respectively formed on the two side surfaces of the electrode strip 1. Specifically, the same solid ion conductor material can be added to both sides of the electrode strip 1, and the solid ion conductor layers of the same solid ion conductor material are respectively extruded and formed on both sides of the electrode strip 1; or adding different solid ion conductor materials on two sides of the electrode strip material 1 respectively, and extruding and forming solid ion conductor layers of different solid ion conductor materials on two sides of the electrode strip material 1 respectively. In this embodiment, the same solid ion conductor material is added to both sides of the electrode strip 1, and the solid ion conductor layers of the same solid ion conductor material are respectively extruded and formed on both sides of the electrode strip 1.
Further, when the axes of the two extrusion rollers 31 are located on the same horizontal plane, the feeding side is located above the two extrusion rollers 31, and the solid ion conductor material is filled in the extrusion gap by using the gravity action, so that the extrusion coating effect is improved. The electrode strip 1 of the present embodiment passes between the two pressing rolls 31 in a vertically downward direction. Specifically, the extrusion gaps between the electrode strip 1 and the two extrusion rollers 31 are equal, or the difference between the extrusion gaps between the electrode strip 1 and the two extrusion rollers 31 is within a set range. The extrusion gap between the electrode strip 1 and the two extrusion rollers 31 is equal, that is, the electrode active layers on the two sides of the electrode strip 1 are respectively extrusion-coated with solid ion conductor layers with the same thickness.
Further, the method for coating a solid-state energy storage electrode strip with two rollers in this embodiment further includes a stirring and dispersing step, in which after the solid-state ion conductor material is stirred and dispersed, the solid-state ion conductor material after being stirred and dispersed is added to the feeding sides of the two squeezing rollers 31.
Further, the method for coating a solid-state energy storage electrode strip with two rollers of the embodiment further includes a shaping step, in which at least one set of shaping roller set is used to shape and roll the solid-state energy storage electrode strip 2 obtained through the extrusion coating step under the conditions of a set temperature and a set dryness, so that the thickness of the solid-state ion conductor layer reaches a set thickness.
Further, the solid ion conductor material is adopted but not limited toGel, oxide, sulfide and organic polymer or a mixture of at least two of them. Specifically, the gel is an electrolyte composed of three components of a macromolecular compound, a metal salt and/or a solvent, and is prepared by adopting one or a mixture of at least two of but not limited to poly-base derivative-acid or alkali or metal salt, poly-base derivative-metal salt-organic solvent and poly-base derivative-metal salt-organic solvent; oxides include, but are not limited to, the sodium super-ionic conductor type-LiTi2form-Li14Zn(GeO4)4And derivatives thereof and garnet-type-Li7La3Zr2O12And derivatives thereof; sulfides such as Li10GeP2S12、Li2S-P2S5And their derivatives, halides, hydrides and lithium phosphorus oxynitrides; the organic polymer is prepared from one or a mixture of at least two of poly-base derivative-metal salt, poly-base derivative-metal salt and poly-base derivative-metal salt. Of course, if necessary, an adhesive for adjusting the viscosity may be provided in the solid ion conductor material, which will not be described in detail.
Example 2
Fig. 2 is a schematic structural diagram of a solid energy storage electrode strip double-roll coating device in embodiment 2 of the invention. The solid-state energy storage electrode strip double-roller coating device comprises:
the unwinding mechanism 10 is used for unwinding the electrode strip 1 compounded with the electrode active layer;
the extrusion coating device is used for extrusion coating the solid ion conductor layer on the electrode active layer and obtaining a solid energy storage electrode strip material 2;
the winding mechanism 20 is used for winding the prepared solid energy storage electrode strip 2;
the extrusion coating device comprises an extrusion roller group, wherein the extrusion roller group comprises two extrusion rollers 31 with mutually parallel axes; feeding devices for feeding solid ion conductor materials are arranged on the feeding sides of the two extrusion rollers 31;
a guide roller set used for enabling the electrode strip 1 to pass through between the two squeezing rollers 31 is arranged between the unreeling mechanism 10 and the reeling mechanism 20, and the guide roller set comprises a plurality of guide rollers 33.
Further, a roll gap adjusting mechanism for adjusting a roll gap is arranged between the two squeezing rolls 31, and the thickness of the solid ion conductor layer extruded and coated on the electrode active layer can be controlled by adjusting the roll gap between the two squeezing rolls 31.
Further, when the electrode strip 1 is in contact fit with one of the squeeze rollers 31, i.e., a squeezing gap is provided between the electrode strip 1 and the other squeeze roller 31, the feeding device includes a feeding mechanism 32 for feeding the solid ion conductor material on the side of the electrode strip 1 facing the other squeeze roller 31. When extrusion gaps are respectively arranged between the electrode strip material 1 and the two extrusion rollers 31; the feeding device comprises two feeding mechanisms 32 which are respectively used for feeding the solid ion conductor materials on two sides of the electrode strip material 1. The electrode strip 1 of the present embodiment is in contact fit with one of the squeeze rollers 31, and a squeezing gap is provided between the electrode strip 1 and the other squeeze roller 31, that is, when the electrode active layer is provided on only one side of the electrode strip 1 of the present embodiment, the solid ion conductor layer is squeeze-coated on the electrode active layer, and when the electrode active layers are provided on both sides of the electrode strip 1, the solid ion conductor layer can be respectively squeeze-coated on the two electrode active layers by using two squeeze-coating processes, which is not repeated.
Further, when the axes of the two extrusion rollers 31 are located on the same horizontal plane, the feeding side is located above the two extrusion rollers 31, and the solid ion conductor material is filled in the extrusion gap by using the gravity action, so that the extrusion coating effect is improved.
Other embodiments of the present embodiment are the same as embodiment 1, and are not described in detail.
The following describes a specific embodiment of the method for coating a solid-state energy storage electrode strip with two rollers in combination with the above solid-state energy storage electrode strip coating apparatus.
The solid-state energy storage electrode strip double-roller coating method comprises the following steps:
an extrusion coating process of extruding and forming a solid ion conductor layer on the electrode active layer of the electrode strip 1 by using an extrusion roller set;
in the extrusion coating process, the roll gap between two extrusion rollers 31 is adjusted to a set range, and solid ion conductor materials subjected to stirring dispersion treatment are added to the feeding sides of the two extrusion rollers 31; and driving the two extrusion rollers 31 to rotate, enabling the tangential velocity of the extrusion rollers 31 to be equal to the velocity of the electrode strip material 1 passing between the two extrusion rollers 31, and extruding and coating the solid ion conductor material on the electrode active layer of the electrode strip material 1 by using the extrusion rollers 31 and forming a solid ion conductor layer to obtain the solid energy storage electrode strip material 2.
Further, the electrode strip 1 of the present embodiment is compounded with the electrode active layer only on one side, the distance between the side of the electrode strip 1 not compounded with the electrode active layer and one of the squeeze rollers 31 is zero, and a squeeze gap is provided between the side compounded with the electrode active layer and the other squeeze roller 31. And adding the solid ion conductor material subjected to stirring and dispersion treatment into the extrusion gap, and forming a solid ion conductor layer on the electrode active layer. Of course, when the electrode active layers are combined on both side surfaces of the electrode strip 1, the distance between one side of the electrode strip 1 and one of the squeeze rollers 31 may also be zero, a squeeze gap is provided between the other side of the electrode strip 1 and the other squeeze roller 31, a solid ion conductor layer is squeeze-coated on one side of the electrode strip 1, and through two squeeze-coating processes, the solid ion conductor layer may be respectively squeeze-coated on both sides of the electrode strip 1, which will not be described again.
Further, when the axes of the two extrusion rollers 31 are located on the same horizontal plane, the feeding side is located above the two extrusion rollers 31, and the solid ion conductor material is filled in the extrusion gap by using the gravity action, so that the extrusion coating effect is improved.
Other embodiments of the present embodiment are the same as embodiment 1, and are not described in detail.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (14)

1. A solid-state energy storage electrode strip double-roller coating device is characterized in that: the method comprises the following steps:
the unwinding mechanism is used for unwinding the electrode strip compounded with the electrode active layer;
the extrusion coating device is used for extrusion coating the solid ion conductor layer on the electrode active layer to obtain a solid energy storage electrode strip;
the winding mechanism is used for winding the prepared solid energy storage electrode strip;
the extrusion coating device comprises an extrusion roller set, wherein the extrusion roller set comprises two extrusion rollers with mutually parallel axes; feeding devices for feeding solid ion conductor materials are arranged on the feeding sides of the two extrusion rollers;
and a guide roller set used for enabling the electrode strip to pass through between the two squeezing rollers is arranged between the unwinding mechanism and the winding mechanism.
2. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 1, wherein:
and a roll gap adjusting mechanism for adjusting the roll gap is arranged between the two extrusion rolls.
3. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 1, wherein:
when the electrode strips are in contact fit with one of the squeezing rollers, the feeding device comprises a feeding mechanism for feeding the solid ion conductor material on the side of the electrode strips facing the other squeezing roller.
When extrusion gaps are respectively arranged between the electrode strip and the two extrusion rollers; the feeding device comprises two feeding mechanisms which are respectively used for feeding the solid ion conductor materials on two sides of the electrode strip.
4. The apparatus of claim 3, wherein:
when the axes of the two extrusion rollers are positioned on the same horizontal plane, the feeding side is arranged above the two extrusion rollers.
5. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 4, wherein: when extrusion gaps are respectively arranged between the electrode strip and the two extrusion rollers; the guide rollers guide the electrode strip to pass through between the two squeezing rollers along a vertically downward direction.
6. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 5, wherein: the guide rollers guide the electrode strip material, and enable the extrusion gaps between the electrode strip material and the two extrusion rollers to be equal, or enable the difference value of the extrusion gaps between the electrode strip material and the two extrusion rollers to be within a set range.
7. The apparatus of claim 3, wherein:
the feeding device also comprises stirring and dispersing equipment for stirring and dispersing the solid ion conductor material, and the feeding mechanism is connected with a discharge hole of the stirring and dispersing equipment.
8. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 7, wherein:
the feeding device further comprises two feeding grooves arranged above the extrusion rollers, and the discharge end of the feeding mechanism is arranged in the feeding grooves.
9. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 8, wherein:
and a driving roller for driving the solid ion conductor material to continuously discharge from the discharge hole of the feeding tank is arranged in the feeding tank.
10. Solid-state energy storage electrode strip twin-roll coating apparatus according to any one of claims 1 to 9, characterized in that:
and a control section for controlling the temperature and dryness.
11. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 10, wherein:
the control area comprises an extrusion control area and a shaping control area, wherein the extrusion control area is arranged corresponding to the extrusion roller set, and the shaping control area is positioned on the discharge side of the extrusion roller set.
12. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 11, wherein:
the shaping control area comprises a plurality of shaping control subareas which are sequentially arranged along the conveying direction of the solid energy storage electrode strip.
13. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 12, wherein:
and a shaping roller set for controlling the thickness of the electrode strip is arranged in the shaping control subarea, and each shaping roller set comprises two shaping rollers which are correspondingly arranged.
14. The apparatus for twin roll coating of solid state energy storage electrode ribbon of claim 13, wherein:
adjacent two sets of in the design roller set, be located the upstream side two of design roller set roll gap more than or equal to between the design roller set that is located the downstream side two roll gap between the design roller.
CN201910890519.4A 2019-09-20 2019-09-20 Double-roller coating equipment for solid energy storage electrode strip Pending CN112536194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910890519.4A CN112536194A (en) 2019-09-20 2019-09-20 Double-roller coating equipment for solid energy storage electrode strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910890519.4A CN112536194A (en) 2019-09-20 2019-09-20 Double-roller coating equipment for solid energy storage electrode strip

Publications (1)

Publication Number Publication Date
CN112536194A true CN112536194A (en) 2021-03-23

Family

ID=75012210

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910890519.4A Pending CN112536194A (en) 2019-09-20 2019-09-20 Double-roller coating equipment for solid energy storage electrode strip

Country Status (1)

Country Link
CN (1) CN112536194A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115475734A (en) * 2022-09-29 2022-12-16 王晓霞 Waterproof coiled material and processing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115475734A (en) * 2022-09-29 2022-12-16 王晓霞 Waterproof coiled material and processing method thereof

Similar Documents

Publication Publication Date Title
EP3907800A1 (en) Negative electrode sheet, preparation method thereof and lithium ion battery containing the same
KR100763090B1 (en) Method for producing lithium ion secondary battery
CN102723211B (en) A kind of high-performance super capacitor and manufacturing process thereof
CN112802987B (en) Method for preparing electrode slice by dry rolling
KR101679662B1 (en) An electrode with enhanced electrode conductivity for electrochemical device and a method for manufacturing the same
JP2015207523A (en) Manufacturing method of electrode plate of lithium ion secondary battery and manufacturing device therefor
CN112536194A (en) Double-roller coating equipment for solid energy storage electrode strip
CN210692701U (en) Solid-state battery and production equipment thereof
CN117253991A (en) Electrode slice, dry preparation equipment and dry preparation method thereof
CN210675786U (en) Double-roller coating equipment for solid energy storage electrode strip
CN210429958U (en) Double-roller composite production equipment for solid energy storage device
CN112542558A (en) Double-roller coating method for solid energy storage electrode strip
CN207398276U (en) A kind of two-sided benefit lithium device of lithium ion battery negative electrode
CN103208639A (en) Anti-deformation zinc bromine flow battery plate and preparation method thereof
CN116995195A (en) Composite pole piece, preparation method thereof and lithium ion battery
CN201823673U (en) Lithium ion battery pole piece coating equipment
KR101910222B1 (en) A multi-layered separator having high heat resistance property for a secondary battery
CN217062155U (en) Composite pole piece preparation device, composite pole piece and all-solid-state battery
WO2021043297A1 (en) Solid-state battery and manufacturing method and manufacturing apparatus thereof
CN210167435U (en) Double-roller extrusion coating production equipment for energy storage electrode
CN112542560B (en) Double-roller extrusion coating production method of energy storage electrode
CN113492091A (en) Double-sided multi-roller coating production method of energy storage electrode
CN112542561A (en) Double-roller composite production equipment for solid energy storage device
CN112542559A (en) Double-roller extrusion coating production equipment for energy storage electrode
CN211700480U (en) Composite production device of solid-state energy storage equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination