CN116487515A - Apparatus and method for substrate processing - Google Patents
Apparatus and method for substrate processing Download PDFInfo
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- CN116487515A CN116487515A CN202210044948.1A CN202210044948A CN116487515A CN 116487515 A CN116487515 A CN 116487515A CN 202210044948 A CN202210044948 A CN 202210044948A CN 116487515 A CN116487515 A CN 116487515A
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- roller
- press roller
- coating
- substrate
- press
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- 239000000463 material Substances 0.000 claims abstract description 181
- 238000000576 coating method Methods 0.000 claims abstract description 113
- 239000011248 coating agent Substances 0.000 claims abstract description 112
- 238000005096 rolling process Methods 0.000 claims abstract description 50
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims description 63
- 238000003825 pressing Methods 0.000 claims description 19
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- 229910001416 lithium ion Inorganic materials 0.000 description 4
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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- 229910052744 lithium Inorganic materials 0.000 description 2
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- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- VVNXEADCOVSAER-UHFFFAOYSA-N lithium sodium Chemical compound [Li].[Na] VVNXEADCOVSAER-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- B05C1/0813—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 characterised by means for supplying liquid or other fluent material to the roller
-
- 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
- B05C1/0834—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 the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
-
- 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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface 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
- 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
-
- 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 application provides equipment and a method for processing a substrate, which can effectively process the substrate, reduce the complexity of the equipment and improve the quality of a finished product. The substrate includes a first surface and a second surface perpendicular to a thickness direction thereof, the apparatus including: a first coating device for coating the material on the first surface; the second coating device is used for coating materials on the roller surface of the first press roller, and the materials are used for forming a first film material and a second film material on the first surface and the roller surface of the first press roller respectively; the rolling device comprises a first press roller and a second press roller which are oppositely arranged, wherein the first surface faces the roller surface of the second press roller, the second surface faces away from the roller surface of the second press roller, the rolling device is used for conveying a base material between the first press roller and the second press roller, so that when the base material passes through the space between the first press roller and the second press roller, the first film is pressed on the first surface, and the second film is transferred from the roller surface of the first press roller and pressed on the second surface.
Description
Technical Field
The present application relates to the field of battery technology, and in particular, to an apparatus and method for substrate processing.
Background
Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.
Generally, a battery is composed of a plurality of battery cells, each of which includes an electrode assembly therein. The electrode assembly is composed of a positive electrode sheet and a negative electrode sheet, and generates electric energy by moving metal ions between the positive electrode sheet and the negative electrode sheet. In the manufacturing process of the pole piece, one important process is to use materials to carry out double-sided coating on a base material and roll forming, so that the pole piece is obtained. Therefore, how to effectively process the substrate to obtain the pole piece is a problem to be solved.
Disclosure of Invention
The application provides a substrate processing device and a substrate processing method, which can effectively process a substrate, reduce the complexity of the device and improve the quality of a finished product.
In a first aspect, there is provided an apparatus for processing a substrate, the substrate including a first surface and a second surface perpendicular to a thickness direction thereof, comprising:
the first coating device is used for coating a material on the first surface, and the material is used for forming a first film on the first surface;
The second coating device is used for coating the material on the roller surface of the first press roller, and the material is used for forming a second film material on the roller surface of the first press roller;
the rolling device is arranged at the downstream of the first coating device and the second coating device, the rolling device comprises a first press roller and a second press roller which are oppositely arranged, the first surface faces towards the roller surface of the second press roller, the second surface faces away from the roller surface of the second press roller, the rolling device is used for conveying the base material to the position between the first press roller and the second press roller, so that when the base material passes through the position between the first press roller and the second press roller, the first film material is adhered to the first surface and the second film material is transferred from the roller surface of the first press roller and adhered to the second surface under the pressure between the first press roller and the second press roller.
Based on the technical scheme, firstly, a first surface of a base material and a roller surface of a first compression roller are coated by a first coating device and a second coating device so as to form a first film material and a second film material on the first surface of the base material and the roller surface of the first compression roller respectively; secondly, the first membrane material and the second membrane material are respectively pressed on the first surface and the second surface through a rolling device. Specifically, the roll-in device is including first compression roller and the second compression roller that set up side by side, and the substrate is conveyed between first compression roller and the second compression roller, and wherein the first surface of substrate sets up towards the roll surface of second compression roller, and the second surface of substrate deviates from the roll surface setting of second compression roller. When the substrate passes between the first press roller and the second press roller, the first film material coated on the first surface of the substrate is pressed onto the first surface under the pressure between the first press roller and the second press roller, and the second film material coated on the roller surface of the first press roller is pressed onto the second surface of the substrate under the pressure between the first press roller and the second press roller because of the difference of the bonding force of the roller surface and the substrate to the film material. Because the first membrane material and the second membrane material are simultaneously pressed on the first surface and the second surface of the base material, repeated winding and unwinding are not needed in the whole base material treatment process, the complexity of equipment is reduced, the stress on the first surface and the second surface of the base material is uniform, the problems of cracking and the like caused by uneven stress are solved, and the quality of a finished product is improved.
In some embodiments, the rolling device is configured to transfer the substrate between the first and second rollers via the second roller, thereby simplifying the roller train configuration.
In some embodiments, the apparatus further comprises: and the first heating device is used for heating the material to form the first film material.
The first heating device can heat the material coated on the first surface of the substrate in an infrared heating mode or a hot oil medium heating mode, for example, so that the bonding particles in the material are melted, and then dry powder in the material is bonded together to form a sheet-shaped coating with poor fluidity, namely the first film material.
In some embodiments, the apparatus further comprises: and the second heating device is used for heating the material to form the second film material.
The second heating device can heat the materials coated on the roller surface of the first compression roller in an infrared heating mode or a hot oil medium heating mode, for example, so that bonding particles in the materials are melted, and then dry powder in the materials is bonded together to form a sheet-shaped coating with poor fluidity, namely a second film material.
In some embodiments, the second heating device comprises: the heating pipes are arranged around the roller surface of the first press roller in an arc shape.
The heating pipes are distributed around the roller surface of the first press roller according to the arc shape, so that the roller surface of the first press roller is heated uniformly, the uniformity of the first film is improved, and the consistency of finished products is ensured.
In some embodiments, the first coating device comprises: the first feeding unit comprises a first blanking port; the first coating roller is arranged at the first blanking port; and the second coating roller is arranged opposite to the first coating roller, so that the material conveyed by the first blanking port is coated on the first surface when the substrate passes through the space between the first coating roller and the second coating roller.
Thus, when the material is conveyed to the first surface of the base material from the first blanking port, the material can be uniformly coated on the first surface of the base material due to the pressure between the first coating roller and the second coating roller, and the coating uniformity is ensured.
In some embodiments, the first feeding unit includes: a first baffle; the first ultrasonic plate is used for generating ultrasonic vibration so that the first blanking port uniformly conveys the materials. Because the first ultrasonic plate can generate ultrasonic vibration, materials can be uniformly output from the first blanking port, and the blanking stability is ensured.
In some embodiments, the second coating device comprises: the second feeding unit comprises a second blanking port; and the third coating roller is positioned at the second blanking port and is arranged opposite to the first pressing roller, so that the material conveyed by the second blanking port is coated on the roller surface of the first pressing roller when the first pressing roller and the third coating roller rotate relatively.
Like this, when the material is carried to the roll surface of first compression roller from the second blanking mouth, because the pressure between first compression roller and the third scribbles the roller surface at first compression roller, the material can be evenly coated, has guaranteed the homogeneity of coating.
In some embodiments, the second feeding unit includes: a second baffle; the second ultrasonic plate is used for generating ultrasonic vibration so that the second blanking port uniformly conveys the materials. Because the second ultrasonic plate can generate ultrasonic vibration, materials can be uniformly output from the second blanking port, and the blanking stability is ensured.
In some embodiments, the apparatus further comprises: an unwind roll for releasing untreated said substrate; the rolling roller is used for rolling the base material treated by the rolling device; a pull roll disposed between the first coating device and the unwind roll for providing traction for the transfer of the substrate; and the tension roller is arranged between the first coating device and the unreeling roller and is used for detecting the tension of the base material in the conveying process, and the tension is used for adjusting the rotation speed of at least one of the unreeling roller, the winding roller and the traction roller. The tension roller detects the tension of the base material in the conveying process, and the rotating speed of the unreeling roller, the wind-up roller, the traction roller and the like can be adjusted based on the tension of the base material fed back by the tension roller, so that the base material is conveyed stably, the stability of the base material coating and rolling processes is ensured, and the quality of a finished product is improved.
In some embodiments, the apparatus further comprises: and at least one pass roller arranged between the unreeling roller and the first coating device and/or between the wind-up roller and the rolling device for changing the conveying direction of the base material. The position of the pass roller can be set according to the roller system requirements, so that the structure of the equipment is optimized by changing the conveying direction of the substrate.
In a second aspect, there is provided a method of treating a substrate comprising a first surface and a second surface perpendicular to a thickness direction thereof, the method comprising:
coating a material on the first surface through a first coating device, wherein the material is used for forming a first film on the first surface;
coating the material on the roller surface of the first press roller through a second coating device, wherein the material is used for forming a second film on the roller surface of the first press roller;
the substrate is subjected to rolling treatment through a rolling device, wherein the rolling device comprises a first press roller and a second press roller which are oppositely arranged, a first surface faces towards the roller surface of the second press roller, a second surface faces away from the roller surface of the second press roller, the rolling device is used for conveying the substrate to the position between the first press roller and the second press roller, so that when the substrate passes through the position between the first press roller and the second press roller, the first film is pressed to the first surface and the second film is transferred from the roller surface of the first press roller to the second surface under the pressure between the first press roller and the second press roller.
In some embodiments, the rolling device is configured to transfer the substrate between the first and second rollers via the second roller.
In some embodiments, the method further comprises: and heating the material coated on the first surface by a first heating device to form the first film material.
In some embodiments, the method further comprises: and heating the material coated on the roller surface of the first press roller through a second heating device to form the second film material.
In some embodiments, the second heating device includes a plurality of heating pipes arranged in an arc around the roll surface of the first press roll.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the present disclosure;
Fig. 2 is a schematic structural view of a battery disclosed in an embodiment of the present application;
fig. 3 is a schematic structural view of a battery cell according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of the structure of an apparatus for substrate processing disclosed in the examples herein;
FIG. 5 is a schematic diagram of a specific implementation of the apparatus based on FIG. 4;
fig. 6 is a schematic flow chart of a method of substrate processing disclosed in an embodiment of the present application.
In the drawings, the drawings are not drawn to scale.
Detailed Description
Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the present application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.
The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.
The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.
While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Reference herein to a battery refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.
In some embodiments, the battery cells may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, to which the embodiments of the present application are not limited. Typically, the battery cells may also be referred to as cells. The battery cells may be in the shape of cylinders, flat bodies, rectangular solids, or other regular or irregular shapes. The technical scheme of the embodiment of the application can be applied to battery cells with any shape.
The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes out of the current collector coated with the positive electrode active material layer, and the current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes out of the current collector with the coated negative electrode active material layer, and the current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The separator may be made of Polypropylene (PP) or Polyethylene (PE). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.
A signal transmission assembly may also be included in the housing of the battery. The signal transmission assembly may be used to transmit signals such as voltage and/or temperature of the battery cells. The signal transmission assembly may include a bus member for making electrical connection between the plurality of battery cells, such as parallel, series, or series-parallel. The bus member may realize electrical connection between the battery cells by connecting electrode terminals of the battery cells. In some embodiments, the bus member may be fixed to the electrode terminals of the battery cells by welding. The bus component transmits the voltage of the battery cells, and a plurality of battery cells can obtain higher voltage after being connected in series, and correspondingly, the electric connection formed by the bus component can also be called as high-voltage connection.
In addition to the buss component, the signal transmission assembly may also include a sensing device for sensing the condition of the battery cells, e.g., the sensing device may be used to measure and transmit sensing signals of the temperature, state of charge, etc. of the battery cells. In embodiments of the present application, the electrical connection components within the battery may include a bussing component and/or a sensing device.
The bus member and the sensing device may be encapsulated in an insulating layer to form a signal transmission assembly. Accordingly, the signal transmission assembly may be used to transmit the voltage and/or sensing signals of the battery cells. The signal transmission assembly has no insulating layer at the connection with the electrode terminals of the battery cells, i.e., the insulating layer has openings therein so as to be connected with the electrode terminals of the battery cells.
The development of battery technology is to consider various design factors, such as energy density, cycle life, discharge capacity, charge-discharge rate, safety, and other performance parameters. These factors are related to the quality of the tab of the electrode assembly in the battery cell, and thus, optimization of the manufacturing process of the tab is required.
In view of this, the present application provides a technical solution, first, coating a first surface of a substrate and a roll surface of a first press roll by a first coating device and a second coating device to form a first film material and a second film material on the first surface of the substrate and the roll surface of the first press roll, respectively; secondly, when the base material is conveyed between the first press roller and the second press roller, the first film material is pressed on the first surface by the pressure between the first press roller and the second press roller, and the roller surface of the second film material with the first press roller is transferred and pressed on the second surface. Because the first membrane material and the second membrane material are simultaneously pressed on the first surface and the second surface of the base material, repeated winding and unwinding are not needed in the whole pole piece manufacturing process, the complexity of equipment is reduced, the stress on the first surface and the second surface of the pole piece is uniform, the problems of cracking and the like caused by uneven stress are solved, and the quality of a finished product is improved.
The technical solution described in the embodiments of the present application is applicable to various devices using batteries, for example, mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, spacecraft, and the like, and for example, spacecraft includes airplanes, rockets, space shuttles, spacecraft, and the like.
It should be understood that the technical solutions described in the embodiments of the present application are not limited to the above-described devices, but may be applied to all devices using batteries, but for simplicity of description, the following embodiments are described by taking an electric vehicle as an example.
For example, as shown in fig. 1, a schematic structural diagram of a vehicle 1 according to an embodiment of the present application, the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 may be provided with a motor 40, a controller 30 and a battery 10, the controller 30 being arranged to control the battery 10 to supply power to the motor 40. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, e.g. the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, e.g. for start-up, navigation and operational power requirements of the vehicle 1. In another embodiment of the present application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.
To meet different power usage requirements, the battery 10 may include a plurality of battery cells. The battery cells can be connected in series, parallel or series-parallel, and the series-parallel refers to the mixture of series connection and parallel connection. The battery may also be referred to as a battery pack. In some embodiments, a plurality of battery cells may be connected in series, parallel, or series-parallel to form a battery module, and then connected in series, parallel, or series-parallel to form the battery 10. That is, a plurality of battery cells may directly constitute the battery 10, or may constitute a battery module before the battery 10 is constituted by the battery module.
For example, as shown in fig. 2, which is a schematic structural view of a battery 10 according to an embodiment of the present application, the battery 10 may include at least one battery module 200. The battery module 200 includes a plurality of battery cells 20. The battery 10 may further include a case 11, in which the case 11 has a hollow structure, and the plurality of battery cells 20 are accommodated in the case 11. As shown in fig. 2, the case 11 may include two parts, which are referred to herein as a first case portion 111 (upper case) and a second case portion 112 (lower case), respectively, and the first case portion 111 and the second case portion 112 are fastened together. The shape of the first and second case parts 111 and 112 may be determined according to the shape of the combination of the plurality of battery cells 20, and at least one of the first and second case parts 111 and 112 may have one opening. For example, as shown in fig. 2, each of the first case portion 111 and the second case portion 112 may be a hollow rectangular parallelepiped and each have only one face as an opening face, the opening of the first case portion 111 and the opening of the second case portion 112 are disposed opposite to each other, and the first case portion 111 and the second case portion 112 are fastened to each other to form the case 11 having a closed chamber. As another example, unlike the one shown in fig. 2, only one of the first and second case parts 111 and 112 may be a hollow rectangular parallelepiped having an opening, and the other may be a plate-like shape to cover the opening. For example, here, the second case portion 112 is a hollow rectangular parallelepiped and only one face is an opening face, and the first case portion 111 is a plate-like shape, and then the first case portion 111 is covered at the opening of the second case portion 112 to form a case 11 having a closed chamber that can be used to house a plurality of battery cells 20. The plurality of battery cells 20 are connected in parallel or in series-parallel, and then are placed in the box 11 formed by buckling the first box 111 and the second box 112.
In some embodiments, the battery 10 may further include other structures, which are not described in detail herein. For example, the battery 10 may further include a bus member for making electrical connection between the plurality of battery cells 20. Specifically, the bus member may realize electrical connection between the battery cells 20 by connecting electrode terminals of the battery cells 20. In some embodiments, the bus member may be fixed to the electrode terminals of the battery cells 20 by welding. The electric power of the plurality of battery cells 20 may be further led out through the case 11 by the conductive mechanism. The conductive mechanism may also belong to the bus bar member.
As an example, as shown in fig. 3, which is a schematic structural view of a battery cell 20 according to an embodiment of the present application, the battery cell 20 includes one or more electrode assemblies 22, a case 211, and an end cap 212. The housing 211 and the end cap 212 form a shell or battery compartment 21. The walls of the housing 211 and the end caps 212 are referred to as the walls of the battery cells 20, wherein for a rectangular parallelepiped type battery cell 20, the walls of the housing 211 include a bottom wall and four side walls. The case 211 is determined according to the shape of the combined one or more electrode assemblies 22, for example, the case 211 may be a hollow rectangular parallelepiped or square or cylindrical body, and one face of the case 211 has an opening so that one or more electrode assemblies 22 may be placed in the case 211. For example, when the housing 211 is a hollow rectangular parallelepiped or square, one of the planes of the housing 211 is an opening surface, i.e., the plane has no wall body so that the inside and outside of the housing 211 communicate. When the housing 211 may be a hollow cylinder, the end surface of the housing 211 is an open surface, i.e., the end surface has no wall body so that the inside and outside of the housing 211 communicate. End cap 212 covers the opening and is connected to housing 211 to form a closed cavity in which electrode assembly 22 is placed. The housing 211 is filled with an electrolyte, such as an electrolyte solution.
The battery cell 20 may further include two electrode terminals 214, and the two electrode terminals 214 may be disposed on the end cap 212. The end cap 212 is generally in the shape of a flat plate, and two electrode terminals 214 are fixed to the flat plate surface of the end cap 212, the two electrode terminals 214 being a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. One connection member 23, or also referred to as a current collecting member 23, is provided for each electrode terminal 214, which is located between the end cap 212 and the electrode assembly 22, for making electrical connection between the electrode assembly 22 and the electrode terminal 214.
As shown in fig. 3, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarities of the first tab 221a and the second tab 222a are opposite. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal through one connection member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to the other electrode terminal through the other connection member 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab through one connection member 23, and the negative electrode terminal 214b is connected to the negative electrode tab through the other connection member 23.
In the battery cell 20, the electrode assemblies 22 may be provided in a single unit, or in a plurality, depending on the actual use requirements, for example, as shown in fig. 3, 4 individual electrode assemblies 22 are provided in the battery cell 20.
A pressure release mechanism 213 may also be provided on the battery cell 20. The pressure release mechanism 213 is used to actuate to release the internal pressure or temperature of the battery cell 20 when the internal pressure or temperature reaches a threshold.
The pressure relief mechanism 213 may be any of a variety of possible pressure relief structures, and embodiments of the present application are not limited in this regard. For example, the pressure release mechanism 213 may be a temperature-sensitive pressure release mechanism configured to be able to melt when the internal temperature of the battery cell 20 provided with the pressure release mechanism 213 reaches a threshold value; and/or the pressure relief mechanism 213 may be a pressure sensitive pressure relief mechanism configured to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.
It should be understood that the battery 10 in the embodiment of the present application includes a plurality of battery cells 20 that may be arranged and disposed in any direction within the case 11. For example, taking a rectangular parallelepiped shape of the battery cells 20 as shown in fig. 3 as an example, as shown in fig. 2, a plurality of battery cells 20 may be mounted in the case 11 in a vertical direction as shown in fig. 3 such that the end caps 212 of the plurality of battery cells 20 after mounting face the upper case 111 and the bottom wall of the case 211 of the battery cell 20 faces the lower case 112. For another example, unlike fig. 2, a plurality of battery cells 20 as shown in fig. 3 may be laterally disposed in the case 11.
As described above, the electrode assembly 22 is composed of the positive electrode sheet, the negative electrode sheet, and the separator. The surfaces of the positive plate and the negative plate are coated with active material layers. In the process of manufacturing the electrode sheet, an important process is to coat the active material on both sides of the substrate and roll-press the substrate to form the positive electrode sheet or the negative electrode sheet.
Fig. 4 shows an apparatus 30 for substrate processing in accordance with an embodiment of the present application. The substrate 40 is, for example, a substrate of a pole piece for manufacturing the pole piece. The substrate 40 includes a first surface 41 and a second surface 42 perpendicular to the thickness direction thereof. As shown in fig. 4, the apparatus 30 includes a first coating device 31, a second coating device 32, and a rolling device 33.
The first coating device 31 is used for coating the first surface 41 with a material 50, and the material 50 is used for forming a first film 51 on the first surface 41. The second coating device 32 is used for coating the material 50 on the roll surface of the first press roll 331, and the material 50 is used for forming the second film 52 on the roll surface of the first press roll.
The rolling device 33 is disposed downstream of the first coating device 31 and the second coating device 32, the rolling device 33 includes a first press roller 331 and a second press roller 332 disposed opposite to each other, the first surface 41 is disposed toward the roller surface of the second press roller 332, and the second surface 42 of the substrate is disposed away from the roller surface of the second press roller 332.
The roll press device 33 is used for conveying the substrate 40 between the first press roll 331 and the second press roll 332, pressing the first film 51 to the first surface under the pressure between the first press roll 331 and the second press roll 332, and transferring the second film 52 from the roll surface of the first press roll 331 and pressing the second film to the second surface 332 when the substrate 40 passes between the first press roll 331 and the second press roll 332.
As shown in fig. 4, first, a material for forming a first film material 51 and a second film material 52 on the first surface 41 of the base material 40 and the roll surface of the first press roll 331 is coated on the first surface 41 of the base material 40 and the roll surface of the first press roll 331, respectively, by the first coating device 31 and the second coating device 32; next, the first film 51 and the second film 52 are pressed onto the first surface 41 and the second surface 42, respectively, by the rolling device 33. In the present application, the first film 51 and the second film 52 are pressed onto two surfaces of the substrate 40 under the action of the rolling device 33.
Specifically, the rolling device 33 includes a first press roller 331 and a second press roller 332 disposed side by side, and the substrate 40 is transferred between the first press roller 331 and the second press roller 332, wherein the first surface 41 of the substrate 40 is disposed toward the roller surface of the second press roller 332, and the second surface 42 of the substrate 40 is disposed away from the roller surface of the second press roller 332, or the second surface 42 is disposed toward the roller surface of the first press roller 331. The first film 51 on the first surface 41 of the substrate 40 is pressed against the first surface 41 under the pressure between the first press roller 331 and the second press roller 332 as the substrate 40 passes between the first press roller 331 and the second press roller 332, and the second film 52 on the roll surface of the first press roller 331 is pressed against the second surface 42 of the substrate 40 under the pressure between the first press roller 331 and the second press roller 332 because of the difference in adhesion of the roll surface 52 and the substrate 40 to the film, and the second film 52 on the roll surface of the first press roller 331 is transferred to the second surface 42 of the substrate 40 as the substrate 40 passes between the first press roller 331 and the second press roller 332. Because the first film 51 and the second film 52 are simultaneously pressed onto the first surface 41 and the second surface 42 of the substrate 40, the double-sided simultaneous rolling of the substrate 40 is realized, repeated winding and unwinding are not needed in the whole substrate processing process, the complexity of the equipment 30 is reduced, and the stress of the first surface 41 and the second surface 42 of the substrate 40 is uniform, so that the problems of cracking and the like caused by uneven stress are reduced, and the quality of a finished product is improved.
In some embodiments, the rolling device 33 is used to transfer the substrate 40 between the first press roller 331 and the second press roller 332 through the second press roller 332, thereby simplifying the structure of the roller system and making the structure of the apparatus 30 more compact.
The larger the diameter of the first roller 331, the more material the roller surface can cover, and thus, in some implementations, the diameter of the first roller 331 can be greater than the diameter of the second roller 332.
In some embodiments, the apparatus 30 further comprises a first heating device 34, the first heating device 34 being configured to heat the material 50 to form a first film 51.
The first heating device 34 may be disposed between the first coating device 31 and the rolling device 33 so as to heat the material 50 coated on the first surface 41; alternatively, the first heating device 34 may be disposed inside the first coating device 34, for example, in the first feeding unit 311 of the first coating device 34, so that the first feeding unit 311 directly outputs the heated material 50, and in this case, the first feeding unit 311 may further include a stirring element or the like.
The first heating device 34 may heat the material 50, for example, by infrared heating or by heating with a hot oil medium. In some embodiments, the first heating device 34 may include a plurality of heating tubes 341, the plurality of heating tubes 341 being configured to heat the material 50.
As shown in fig. 4, the material 50 is coated on the first surface 41 of the substrate 40 as it passes through the first coating device 31. The material 50 may be, for example, a dry powder, in which viscous particles are doped. When the material 50 is transferred from the first coating device 31 to the first heating device 34, the first heating device 34 heats the material 50 coated on the first surface 41 of the substrate 40 to melt the adhesive particles doped in the material 50, so that the dry powder in the material 50 can be adhered together through the adhesive particles to form a sheet-like coating layer with poor flowability, i.e., the first film material 51.
In some embodiments, the apparatus 30 further comprises a second heating device 35 for heating the material 50 to form a second film 52.
The second heating device 35 is located at the outer circumference of the first press roller 331, and is used for heating the material 50 coated on the roller surface of the first press roller 331. The second heating means 35 may heat the material 50, for example, by infrared heating or by heating with a hot oil medium. In some embodiments, the second heating device 35 includes a plurality of heating pipes 351, and the plurality of heating pipes 351 are arranged in an arc shape around the roll surface of the first pressing roll 331. When the plurality of heating pipes 351 are arranged around the roller surface of the first press roller according to an arc shape, the roller surface of the first press roller 331 is heated uniformly, so that uniformity of the formed first film material 51 is improved, and uniformity of a finished product is ensured.
As shown in fig. 4, the material 50 is coated on the roll surface of the first press roll 331 as the substrate 40 passes through the second coating apparatus 32. When the material 50 is transferred to the second heating device 35 along with the rotation of the first press roller 331, the second heating device 35 heats the material 50 coated on the roller surface of the first press roller 331, so that the adhesive particles doped in the material 50 are melted, and the dry powder in the material 50 can be adhered together through the adhesive particles, so as to form a sheet-shaped coating layer with poor flowability, namely, the second film 52.
It can be seen that for the first surface 41 of the substrate 40, the material 50 is coated on the first surface 41 after passing through the first coating device 31; next, the substrate 40 is conveyed to the first heating device 34, the material coated on the first surface 41 forms a first film 51 on the first surface 41 under the heating of the first heating device 34, and the first surface 41 of the substrate 40 is disposed towards the roller surface of the second pressing roller 332; when the substrate 40 passes between the first press roller 331 and the second press roller 332 through the second press roller 332, the first film 51 is pressed to the first surface 41 by the pressure between the first press roller 331 and the second press roller 332. It will be appreciated that the material 50 is only applied or pre-pressed on the first surface 41 of the substrate 40 before the substrate 40 reaches the rolling device 33, and the material 50 is firmly pressed on the first surface 41 after the substrate 40 passes through the rolling device 33, so as to obtain a finished product with quality meeting the requirement.
For the second surface 41 of the substrate 40, after passing through the second coating device 32, the material 50 is coated on the roller surface of the first press roller 331, and a second film 52 is formed on the roller surface of the first press roller 331 under the heating of the second heating device 34, and the second surface 42 of the substrate 40 is disposed towards the roller surface of the first press roller 331; then, as the first press roller 331 rotates, the second film 52 on the roller surface of the first press roller 331 is transferred between the first press roller 331 and the second press roller 332, and the second film 52 is pressed against the second surface 42 of the base material 40 by the pressure between the first press roller 331 and the second press roller 332. It will be appreciated that the material 50 is only smeared or pre-pressed on the roll surface of the first press roller 331 before the second film 52 reaches between the first press roller 331 and the second press roller 332, and after the second film 52 passes between the first press roller 331 and the second press roller 332, due to the difference between the adhesion force of the roll surface and the substrate to the material 50, when the substrate 40 and the second film 52 pass between the first press roller 331 and the second press roller 332 simultaneously, the material 50 is transferred from the roll surface of the first press roller 331 to the second surface 42 of the substrate 40, and the second film 52 is firmly pressed on the second surface 42 under the pressure between the first press roller 331 and the second press roller 332, so as to obtain a finished product with quality meeting the requirement.
In some embodiments, as shown in fig. 4, the first coating device 31 includes a first feeding unit 311, a first coating roller 312, and a second coating roller 313. The first feeding unit 311 includes a first blanking port 3113. The first applicator roll 312 is disposed at the first blanking port 3113. The second applicator roll 313 is positioned opposite the first applicator roll 312 to apply the material 50 delivered by the first blanking port 3113 to the first surface 41 of the substrate 40 as the substrate 40 passes between the first applicator roll 312 and the second applicator roll 313.
Thus, when the material 50 is fed from the first discharge port 3113 to the first surface 41 of the substrate 40, the material 50 is uniformly coated on the first surface 41 of the substrate 40 due to the pressure between the first coating roller 312 and the second coating roller 313, ensuring uniformity of coating.
It should be understood that the second coating roller 313 may be replaced by a plate or the like, and coating of the substrate 40 may be performed, which is not limited in this application. However, the use of the second applicator roll 313 and the opposing placement of the second applicator roll 313 and the first applicator roll 312 may allow for symmetrical loading of the substrate 40 as compared to a flat plate. And the transfer path of the substrate 40 is more flexible when the second coating roller 313 is used.
As shown in fig. 4, the first feeding unit 311 may include, for example, a first baffle 3111 and a first ultrasonic plate 3112. Wherein a first blanking port 3113 is formed between the first ultrasonic plate 3112 and the first baffle 3111. The first ultrasonic plate 3113 is configured to generate ultrasonic vibrations so that the first discharge port 3113 uniformly conveys the material 50. Since the first ultrasonic plate 3111 can generate ultrasonic vibration, the discharging amount can be controlled, so that the material 50 is uniformly output from the first discharging port 3113, and the discharging stability is ensured.
The first baffle 3111 and the first ultrasonic plate 3112 may store the material 50 in a receiving space formed therein. For example, the caliber of the accommodating space facing the direction of the first blanking port 3113 may be from large to small, so as to facilitate blanking.
The end surface of the first ultrasonic plate 3112 facing the first blanking port 3113 may be an inclined surface, for example an inclined surface having an angle of 45 °, which may also be referred to as first ultrasonic blade 3112 due to its shape like a blade.
In some embodiments, as shown in fig. 4, the second coating device 32 includes a second feeding unit 321 and a third coating roller 322. Wherein the second feeding unit 321 includes a second blanking port 3213. The third coating roller 322 is located at the second blanking port 3213 and is disposed opposite to the first press roller 331, so that the material 50 conveyed by the second blanking port 3213 is coated on the roller surface of the first press roller 331 when the first press roller 331 and the third coating roller 322 rotate relatively.
Thus, when the material 50 is conveyed from the second blanking port 3213 to the roll surface of the first press roll 331, the material 50 is uniformly coated on the roll surface of the first press roll 331 due to the pressure between the first press roll 331 and the third coating roll 322, thereby ensuring the uniformity of coating.
In fact, during the coating process, the first press roller 331 also acts as a coating roller, cooperating with the third coating roller 322, to apply the material 50 on the roller surface of the first press roller 331. That is, when coating the roll surface of the first press roll 331, the first press roll 331 functions as a coating roll, and may, together with the third coating roll 322, smooth the material 50 on the first surface 41 of the substrate 40; while the first press roller 331 functions as a press roller in the process of thereafter rolling the base material 40, the base material 40 is double-sided rolled together with the second press roller 332.
It should be appreciated that in some embodiments, the pressure between the first applicator roller 312 and the second applicator roller 313, and the pressure between the third applicator roller 322 and the first pressure roller 331, is less than the pressure between the first pressure roller 331 and the second pressure roller 332. Because the coating roller is used for coating materials on the surface of the substrate, the required pressure is small, namely light pressure is needed, and the coating roller mainly is used for trowelling the materials. The press roller is used for transferring and pressing or bonding the film material on the surface of the substrate, and the required pressure is high, namely heavy pressure, so that the film material is firmly formed on the surface of the substrate, and the finished substrate such as a pole piece is obtained.
The positional relationship among the third coating roller 322, the first pressing roller 331, and the second pressing roller 332 is not limited in the embodiment of the present application. For example, as shown in fig. 4, the centers of the third coating roller 322, the first pressing roller 331 and the second pressing roller 332 may be located on a straight line, so as to facilitate arrangement, and enable full use of the roller surface of the first pressing roller 331, so that a larger area, such as half of the area, on the roller surface may be used to carry materials.
As shown in fig. 4, the second feeding unit 321 may include, for example, a second baffle 3211 and a second ultrasonic plate 3212. Wherein, a second blanking port 3213 is formed between the second baffle 3211 and the second ultrasonic plate 3212. The second ultrasonic plate 3212 is configured to generate ultrasonic vibration so that the second discharge port 3213 uniformly conveys the material. Because the second ultrasonic plate 3212 can generate ultrasonic vibration, the blanking amount can be controlled, so that the material 50 is uniformly output from the second blanking port 3213, and the blanking stability is ensured.
The second baffle 3211 and the second ultrasonic plate 3212 may form an accommodating space in which the material 50 may be stored. For example, the caliber of the accommodating space is from large to small along the direction towards the second blanking port 3213, thereby facilitating blanking.
The end surface of the second ultrasonic plate 3212 facing the second blanking port 3213 may be an inclined surface, for example an inclined surface having an angle of 45 °, which may also be referred to as a second ultrasonic blade 3212 due to its shape like a blade.
In some embodiments, as shown in fig. 5, the apparatus 30 may also include other rollers to form a complete roller train.
For example, as shown in fig. 5, the apparatus 30 further includes an unwind roller 61 and a wind-up roller 62, wherein the unwind roller 61 is used to release the untreated substrate 40 and the wind-up roller 62 is used to wind up the substrate 40 after being treated by the rolling device 33.
As another example, as shown in fig. 5, the apparatus 30 further includes a pull roll 70, the pull roll 70 being disposed between the first coating device 31 and the unwind roll 61 for providing traction to the transport of the substrate 40.
As another example, as shown in fig. 5, the apparatus 30 further includes a tension roller 80, and the tension roller 80 is disposed between the first coating device 31 and the unreeling roller 61 for detecting the tension of the substrate 40 during the transfer. The tension may be used to adjust the rotational speed of at least one of unwind roll 61, wind-up roll 62, pull roll 70.
The tension of the base material 40 in the conveying process is detected by the tension roller 80, and parameters such as the rotation speed of the unreeling roller 61, the reeling roller 62, the traction roller 70 and the like can be adjusted based on the tension fed back by the tension roller 80, so that the base material 40 is conveyed stably, the stability of the coating and rolling processes of the base material 40 is ensured, and the quality of a finished product is improved.
In some embodiments, as shown in fig. 5, the apparatus 30 further comprises at least one over-roll 90, disposed between the unwind roll 61 and the first coating device 31 and/or between the wind-up roll 62 and the rolling device 33. The over roller 90 serves to change the conveying direction of the base material 40. The position of the over-rollers 90 may be set according to the roll train requirements to optimize the configuration of the apparatus 30 by changing the direction of conveyance of the substrate 40.
The number and location of the pass rollers 90 are not limited in this application. Fig. 5 shows an example in which two passing rollers 90 are provided between the unwinding roller 61 and the first coating device 31, and two passing rollers 90 are provided between the winding roller 62 and the rolling device 33.
The apparatus 30 for substrate processing according to embodiments of the present application is described above. The method 100 of substrate processing in accordance with embodiments of the present application will now be described, with reference to the foregoing embodiments for parts that are not described in detail.
Fig. 6 illustrates a method 100 of substrate processing according to an embodiment of the present application. The substrate 40 includes a first surface and a second surface perpendicular to the thickness direction thereof. As shown in fig. 6, the method 100 includes some or all of the following steps.
In step 110, the material 50 is applied to the first surface 41 by the first coating device 31, and the material 50 is used to form a first film 51 on the first surface 41.
In step 120, the material 50 is applied by the second coating device 32 to the roll surface of the first press roll 331, and the material 50 is used to form the second film 52 on the roll surface of the first press roll 331.
In step 130, the substrate 40 is subjected to a roll-pressing process by the roll-pressing device 33. Wherein the rolling device 33 includes a first press roller 331 and a second press roller 332 disposed opposite to each other, the first surface 41 is disposed towards the roller surface of the second press roller 332, the second surface 42 of the substrate 40 is disposed away from the roller surface of the second press roller 332, the rolling device 33 is configured to convey the substrate 40 between the first press roller 331 and the second press roller 332, press the first film 51 to the first surface 41 under the pressure between the first press roller 331 and the second press roller 332 when the substrate 40 passes between the first press roller 331 and the second press roller 332, and transfer the second film 52 from the roller surface of the first press roller 331 to the second surface 42.
Based on the method 100, first, the first surface 41 of the substrate 40 and the roll surface of the first press roll 331 are coated by the first coating device 31 and the second coating device 32 to form a first film material 51 and a second film material 52 on the first surface 41 of the substrate 40 and the roll surface of the first press roll 331, respectively; next, the first film 51 and the second film 52 are pressed onto the first surface 41 and the second surface 42, respectively, by the rolling device 33. Specifically, the rolling device 33 includes a first press roller 331 and a second press roller 332 arranged side by side, and the substrate 40 is conveyed between the first press roller 331 and the second press roller 332, wherein the first surface 41 of the substrate 40 is disposed toward the roller surface of the second press roller 332, and the second surface 42 of the substrate 40 is disposed away from the roller surface of the second press roller 332. When the substrate 40 passes between the first press roller 331 and the second press roller 332, the first film 51 previously coated on the first surface 41 of the substrate 40 is pressed onto the first surface 41 under the pressure between the first press roller 331 and the second press roller 332, and the second film 52 previously coated on the roll surface of the first press roller 331 is pressed onto the second surface 42 of the substrate 40 under the pressure between the first press roller 331 and the second press roller 332 because of the difference in adhesion force of the roll surface and the substrate 40 to the film, the second film 52 on the roll surface of the first press roller 331 is transferred to the second surface 42 of the substrate 40 when the substrate 40 passes between the first press roller 331 and the second press roller 332. Because the first film 51 and the second film 52 are simultaneously pressed onto the first surface 41 and the second surface 42 of the substrate 40, repeated winding and unwinding are not needed in the whole substrate treatment process, the complexity of the device 30 is reduced, the stress of the first surface 41 and the second surface 42 of the substrate 40 is uniform, the problems of cracking and the like caused by uneven stress are reduced, and the quality of a finished product is improved.
In some embodiments, the rolling device 33 is configured to transfer the substrate 40 between the first press roller 331 and the second press roller 332 via the second press roller 332.
In some embodiments, the method 100 further comprises: the material 50 coated on the first surface 41 is heated by the first heating device 34 to form a first film 51.
In some embodiments, the method 100 further comprises: the material 50 coated on the roll surface of the first press roll 331 is heated by the second heating device 35 to form a second film 52.
In some embodiments, the second heating device 35 includes a plurality of heating pipes 351 arranged in an arc shape around the roll surface of the first pressing roll 331.
The present application has been described with reference to the preferred embodiments, but various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (14)
1. An apparatus for processing a substrate, the substrate comprising a first surface and a second surface perpendicular to a thickness direction thereof, the apparatus comprising:
The first coating device is used for coating a material on the first surface, and the material is used for forming a first film on the first surface;
the second coating device is used for coating the material on the roller surface of the first press roller, and the material is used for forming a second film material on the roller surface of the first press roller;
the rolling device is arranged at the downstream of the first coating device and the second coating device, the rolling device comprises a first press roller and a second press roller which are oppositely arranged, the first surface faces towards the roller surface of the second press roller, the second surface faces away from the roller surface of the second press roller, the rolling device is used for conveying the base material to the position between the first press roller and the second press roller, when the base material passes through the position between the first press roller and the second press roller, the first film material is pressed to the first surface and the second film material is transferred from the roller surface of the first press roller and pressed to the second surface under the pressure between the first press roller and the second press roller.
2. The apparatus of claim 1, wherein the rolling device is configured to transfer the substrate between the first and second rollers via the second roller.
3. The apparatus according to claim 1 or 2, characterized in that the apparatus further comprises:
and the first heating device is used for heating the material to form the first film material.
4. A device according to any one of claims 1 to 3, characterized in that the device further comprises:
and the second heating device is used for heating the material to form the second film material.
5. The apparatus of claim 4, wherein the second heating means comprises:
the heating pipes are arranged around the roller surface of the first press roller in an arc shape.
6. The apparatus according to any one of claims 1 to 5, wherein the first coating device comprises:
the first feeding unit comprises a first blanking port;
the first coating roller is arranged at the first blanking port;
and the second coating roller is arranged opposite to the first coating roller, so that the material conveyed by the first blanking port is coated on the first surface when the substrate passes through the space between the first coating roller and the second coating roller.
7. The apparatus of claim 6, wherein the first feeding unit comprises:
a first baffle;
The first ultrasonic plate is used for generating ultrasonic vibration so that the first blanking port uniformly conveys the materials.
8. The apparatus according to any one of claims 1 to 7, wherein the second coating device comprises:
the second feeding unit comprises a second blanking port;
and the third coating roller is positioned at the second blanking port and is arranged opposite to the first pressing roller, so that the material conveyed by the second blanking port is coated on the roller surface of the first pressing roller when the first pressing roller and the third coating roller rotate relatively.
9. The apparatus of claim 8, wherein the second feeding unit comprises:
a second baffle;
the second ultrasonic plate is used for generating ultrasonic vibration so that the second blanking port uniformly conveys the materials.
10. The apparatus according to any one of claims 1 to 9, characterized in that the apparatus further comprises:
an unwind roll for releasing untreated said substrate;
the rolling roller is used for rolling the base material treated by the rolling device;
A pull roll disposed between the first coating device and the unwind roll for providing traction for the transfer of the substrate;
and the tension roller is arranged between the first coating device and the unreeling roller and is used for detecting the tension of the base material in the conveying process, and the tension is used for adjusting the rotation speed of at least one of the unreeling roller, the winding roller and the traction roller.
11. A method of treating a substrate, wherein the substrate comprises a first surface and a second surface perpendicular to a thickness direction thereof, the method comprising:
coating a material on the first surface through a first coating device, wherein the material is used for forming a first film on the first surface;
coating the material on the roller surface of the first press roller through a second coating device, wherein the material is used for forming a second film on the roller surface of the first press roller;
the substrate is subjected to rolling treatment through a rolling device, wherein the rolling device comprises a first press roller and a second press roller which are oppositely arranged, a first surface faces towards the roller surface of the second press roller, a second surface faces away from the roller surface of the second press roller, the rolling device is used for conveying the substrate to the position between the first press roller and the second press roller, so that when the substrate passes through the position between the first press roller and the second press roller, the first film is pressed to the first surface and the second film is transferred from the roller surface of the first press roller to the second surface under the pressure between the first press roller and the second press roller.
12. The method of claim 11, wherein the rolling device is configured to transfer the substrate between the first and second rollers via the second roller.
13. The method according to claim 11 or 12, characterized in that the method further comprises:
and heating the material coated on the first surface by a first heating device to form the first film material.
14. The method according to any one of claims 11 to 13, further comprising:
and heating the material coated on the roller surface of the first press roller through a second heating device to form the second film material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044948.1A CN116487515A (en) | 2022-01-14 | 2022-01-14 | Apparatus and method for substrate processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044948.1A CN116487515A (en) | 2022-01-14 | 2022-01-14 | Apparatus and method for substrate processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116487515A true CN116487515A (en) | 2023-07-25 |
Family
ID=87212499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210044948.1A Pending CN116487515A (en) | 2022-01-14 | 2022-01-14 | Apparatus and method for substrate processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116487515A (en) |
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2022
- 2022-01-14 CN CN202210044948.1A patent/CN116487515A/en active Pending
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