CN214505544U - Battery pole piece preparation device - Google Patents
Battery pole piece preparation device Download PDFInfo
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- CN214505544U CN214505544U CN202120235106.5U CN202120235106U CN214505544U CN 214505544 U CN214505544 U CN 214505544U CN 202120235106 U CN202120235106 U CN 202120235106U CN 214505544 U CN214505544 U CN 214505544U
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- pole piece
- conveyor belt
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- battery pole
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- 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
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Abstract
The application provides a battery pole piece preparation facilities, the device includes: the conveying device comprises a winding device, an unwinding device and a conveying belt connected with the winding device and the unwinding device; an adhesive layer disposed on the conveyor belt; and the compression roller is positioned in the middle of the conveyor belt. The battery pole piece preparation device is provided with the adhesion layer for adhering the pole piece to the conveying belt, so that the situation that the rolling is influenced by the movement of the pole piece in the rolling process can be avoided.
Description
Related application
The divisional application is the divisional application of the original application. The application date of the original application is 26/5/2020, the application number of the original application is 2020209136949, and the name of the original application is a battery pole piece preparation device.
Technical Field
The application relates to the technical field of lithium batteries, in particular to a battery pole piece preparation device.
Background
Currently, with government policy enforcement and environmental requirements, electric vehicles have been widely used using lithium ion batteries as power sources.
In some technologies for preparing lithium batteries, a way of dividing a pole piece into strips and then rolling the strips is adopted, but the ductility of a foil material and a material area of the pole piece is different, so that the edges of the foil material and the pole piece are wrinkled during rolling, and even when high compaction is performed, the pulling of the foil material and the foil material under tension can cause belt breakage, so that the compaction density of the lithium ion battery is low, and the energy density is limited.
Therefore, it is necessary to develop a new lithium battery pole piece preparation device to improve compaction and improve the energy density of the lithium battery.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery pole piece preparation facilities can improve the compaction to some lithium battery pole pieces appear the fold easily when the roll-in at present and even the broken tape leads to compaction density on the low side, the restricted problem of energy density, this application provides a battery pole piece preparation facilities to improve the compaction, thereby improve battery energy density.
One aspect of the present application provides a battery pole piece preparation facilities, includes: the feeding device comprises a first bearing plate and a first conveying belt arranged on the first bearing plate, wherein a plurality of first pipelines are arranged on the first bearing plate along the rolling direction, and a plurality of first air suction holes communicated with the plurality of first pipelines are formed in the first conveying belt; the discharging device is connected with the feeding device and comprises a second bearing plate and a second conveying belt arranged on the second bearing plate, wherein a plurality of second pipelines are arranged on the second bearing plate along the rolling direction, and a plurality of second air suction holes communicated with the plurality of second pipelines are formed in the second conveying belt; and the compression roller is positioned at the joint of the feeding device and the discharging device.
In some embodiments of the present application, the pressure roller comprises a heat and pressure roller.
In some embodiments of the present application, the side of the connecting portion between the feeding device and the discharging device, on which no pole piece is placed, is configured as a circular arc.
In some embodiments of the present application, the number of first conduits does not extend to a portion where the feeding device and the discharging device are connected.
In some embodiments of the present application, the battery pole piece preparation apparatus further includes a suction pump connected to the plurality of first pipes and the plurality of second pipes.
Another aspect of the present application provides a battery pole piece preparation apparatus, including: the conveying device comprises a winding device, an unwinding device and a conveying belt connected with the winding device and the unwinding device; an adhesive layer disposed on the conveyor belt; and the compression roller is positioned in the middle of the conveyor belt.
In some embodiments of the present application, the pressure roller comprises a heat and pressure roller.
In some embodiments of the present application, the material of the adhesion layer comprises glue.
The application battery pole piece preparation facilities roll-in again after cutting into the monolithic with the pole piece earlier, monolithic pole piece can not have tension at the transmission in-process, can not have the problem of disconnected area to utmost point ear has cut, can not produce the problem of fold, thereby can improve the compaction and improve battery energy density, thereby be provided with the structure of adsorbing the pole piece on the conveyer belt on the battery pole piece preparation facilities, can avoid the pole piece to remove and influence the roll-in at the roll-in-process.
Drawings
The following drawings describe in detail exemplary embodiments disclosed in the present application. Wherein like reference numerals represent similar structures throughout the several views of the drawings. Those of ordinary skill in the art will understand that the present embodiments are non-limiting, exemplary embodiments, and that the accompanying drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of the present application, as other embodiments may equally accomplish the utility model intent of the present application. It should be understood that the drawings are not to scale. Wherein:
FIG. 1 is a schematic structural view of an apparatus for manufacturing a battery electrode sheet according to some embodiments of the present disclosure;
FIG. 2 is a top view of an apparatus for making a battery pole piece according to some embodiments of the present disclosure;
FIG. 3 is a cross-sectional view and a close-up view of a device for making a battery pole piece according to some embodiments of the present disclosure;
FIG. 4 is a top view of the infeed and outfeed devices in some embodiments of the present application;
FIG. 5 is a schematic structural diagram of an apparatus for manufacturing a battery electrode sheet according to another embodiment of the present disclosure;
FIG. 6 is a top view of an apparatus for making a battery pole piece according to further embodiments of the present disclosure;
FIG. 7 is a cross-sectional view and a partially enlarged view of an apparatus for manufacturing a battery pole piece according to further embodiments of the present disclosure;
fig. 8 is a flow chart of a method of making a battery pole piece according to some embodiments of the present disclosure.
Detailed Description
The following description is presented to enable any person skilled in the art to make and use the present disclosure, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present application. Thus, the present application is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.
The technical solution of the present invention will be described in detail with reference to the following embodiments and accompanying drawings.
Fig. 1 is a schematic structural diagram of a battery pole piece manufacturing apparatus according to some embodiments of the present disclosure. Fig. 2 is a top view of an apparatus for making a battery pole piece according to some embodiments of the present disclosure.
An embodiment of the present application provides a battery pole piece preparation apparatus, referring to fig. 1 and fig. 2, the battery pole piece preparation apparatus includes: the device comprises a feeding device 4, a discharging device 5 connected with the feeding device 4, and a press roller 3 positioned at the joint of the feeding device 4 and the discharging device 5.
The cut pole pieces 2 can be fed into the press roll 3 by the feeding device 4, the press roll 3 can compact the pole pieces 2, the pole pieces 2 continue to move in the rolling direction while being rolled, and after moving to the discharging device 5, the discharging device 5 conveys the compacted pole pieces 2 to a subsequent process, for example, the pole pieces 2 to a receiving mechanism or a laminating mechanism. The feeding device 4 and the discharging device 5 can adsorb the pole piece 2, so that the pole piece 2 is prevented from moving due to stress in the rolling process to influence rolling.
In some embodiments of the present application, the pressing roller 3 includes a hot pressing roller, and the hot pressing roller can heat the pole piece 2 during rolling, so that the pole piece can be rolled more easily.
The battery pole piece preparation device is described in detail below with reference to fig. 3 and 4.
FIG. 3 is a cross-sectional view and a close-up view of a device for manufacturing a battery pole piece according to some embodiments of the present disclosure. Referring to fig. 3, the side of the connecting portion of the feeding device 4 and the discharging device 5, on which the pole pieces 2 are not placed, is configured to be circular arc-shaped. Since the contour of the press roller 3 is circular, and the feeding device 4 and the discharging device 5 have a certain thickness, in order to enable the press roller 3 to be capable of pressing the two surfaces of the pole piece 2, the side of the connecting part of the feeding device 4 and the discharging device 5, on which the pole piece 2 is not placed, is set to be circular arc-shaped. The radian of the arc can be set according to the size of the press roller 3 as long as two press rollers of the press roller 3 can simultaneously roll the pole piece 2.
With continued reference to fig. 3, it should be noted that the feeding device 4 and the discharging device 5 are not physically directly connected, and it should be understood that the term "the feeding device 4 and the discharging device 5 are connected" as used herein refers to a logically connected relationship, and the feeding device 4 and the discharging device 5 are respectively used for conveying the pole piece 2 to the pressing roller 3 and receiving the pole piece 2 from the pressing roller 3, which can be said to be logically connected relationship.
With continued reference to fig. 3, the feeding device 4 conveys the pole piece 2 to the press roller 3, a part of the pole piece 2 leaves the feeding device 4 and enters the press roller 3, and the feeding device 4 and the press roller 3 continue to move until a part of the pole piece 2 leaves the press roller 3 and contacts the discharging device 5, and the discharging device 5 receives the pole piece 2 and then conveys the pole piece 2 to the next process. Since the pole pieces 2 are cut single pole pieces, and have small size and are easy to move in the conveying process, especially when being rolled, the feeding device 4 and the discharging device 5 are provided with mechanisms for adsorbing the pole pieces 2, and the adsorbing mechanisms will be described in detail later.
FIG. 4 is a top view of the infeed and outfeed devices in some embodiments of the present application.
Referring to fig. 4, the feeding device 4 includes a first bearing plate 41 and a first conveyor belt disposed on the first bearing plate 41, wherein a plurality of first pipelines 411 are disposed on the first bearing plate 41 along a rolling direction, and a plurality of first air suction holes communicated with the plurality of first pipelines 411 are disposed on the first conveyor belt.
Since the first conveyor belt is sleeved on the first carrier plate 41, the first conveyor belt is not shown in the figure. The first bearing plate 41 is further provided with a transmission device, and the first conveyor belt can advance towards the rolling direction under the driving of the transmission device, so as to drive the pole piece 2 on the first conveyor belt to advance.
The battery pole piece preparation device can further comprise an air pump, the air pump is connected with the first pipelines 411, when the battery pole piece preparation device works, the air pump pumps air to enable the first pipelines 411 to be in a vacuum state, the first pipelines 411 are connected with the first air suction holes in the first conveyor belt, and the vacuum state enables the pole pieces 2 covering the first air suction holes to be adsorbed and not easy to move.
The size of the adsorption force can be well controlled by controlling the air exhaust power of the air exhaust pump, the use is very convenient, the pole piece 2 is adsorbed through the first air suction hole, the influence on the pole piece 2 is extremely low, and the pole piece 2 cannot be damaged.
In some embodiments of the present application, the first pipes 411 do not extend to the portion where the feeding device 4 and the discharging device 5 are connected, so as to avoid that the pole piece 2 is difficult to separate from the feeding device 4 and enter the pressing roller 3 due to the adsorption force, and even the pole piece 2 is damaged due to the adsorption force and the rolling pull of the pressing roller 3.
With reference to fig. 4, the discharging device 5 includes a second bearing plate 51 and a second conveyor belt disposed on the second bearing plate 51, wherein a plurality of second pipelines 511 are disposed on the second bearing plate 51 along the rolling direction, and a plurality of second suction holes communicated with the plurality of second pipelines 511 are disposed on the second conveyor belt.
The second conveyor belt is not shown in the figure because it is sleeved on the second carrier plate 51. The second bearing plate 51 is further provided with a transmission device, and the second conveyor belt can advance towards the rolling direction under the driving of the transmission device, so as to drive the pole piece 2 on the second conveyor belt to advance.
The battery pole piece preparation device can further comprise an air pump, the air pump is connected with the second pipelines 511, when the battery pole piece preparation device works, the air pump pumps air to enable the second pipelines 511 to be in a vacuum state, the second pipelines 511 are connected with the second air suction holes in the second conveyor belt, and the vacuum state enables the pole pieces 2 covering the second air suction holes to be adsorbed and not easy to move. In particular, when the pole piece 2 is moved from the pressure roller 3 toward the discharge device 5, the suction force can assist the pole piece 2 in moving to the discharge device 5.
A battery pole piece preparation facilities, adsorb the pole piece on the conveyer belt through the adsorption mechanism who sets up on feed arrangement and discharging device, can avoid the pole piece to remove and influence the roll-in at the roll-in-process.
An embodiment of the present application further provides another battery pole piece manufacturing apparatus, referring to fig. 5 and fig. 6, where fig. 5 and fig. 6 are a schematic structural diagram and a top view of the battery pole piece manufacturing apparatus in another embodiment of the present application, respectively, where the battery pole piece apparatus includes: the conveying device comprises a winding device, an unwinding device and a conveying belt 1 connected with the winding device and the unwinding device; an adhesive layer disposed on the conveyor belt 1; and the pressing roller 3 is positioned in the middle of the conveyor belt 1.
The cut pole pieces 2 can be fed into the press roller 3 by the conveying device, the press roller 3 can compact the pole pieces 2, the pole pieces 2 continue to move in the rolling direction while being rolled, and after compaction, the pole pieces are conveyed to a subsequent process by the conveying device, for example, the pole pieces 2 are conveyed to a material receiving mechanism or a laminating mechanism. The transmission device can adhere the pole piece 2 to the conveyor belt 1, so that the pole piece 2 is prevented from moving due to stress in the rolling process to influence rolling.
The winding device and the unwinding device are respectively arranged at two ends of the conveying belt 1, and the winding device and the unwinding device can enable the conveying belt 1 to advance towards the rolling direction, so that the pole piece 2 on the conveying belt 1 is driven to advance. It should be noted that, for the sake of brevity, the winding device and the unwinding device are not shown in the drawings.
The thickness of the conveyor belt 1 is small, and the press roller 3 can well roll both sides of the pole piece 2. Because the pole piece 2 is a single pole piece which is cut, the size is small, the pole piece is easy to move in the conveying process, and particularly when the pole piece is rolled, an adhesive layer for absorbing the pole piece 2 is further arranged on the conveying belt 1.
Since the adhesive layer is provided on the surface of the conveyor belt 1, it is not shown in the figure. The adhesion layer can adhere to the pole piece 2 on the conveyor belt 1, so that the pole piece 2 is prevented from moving due to stress in the rolling process to influence rolling. The viscosity of the adhesion layer can be set according to the size of the pole piece, the pressure degree of the roller and the like, and the adhesion layer is ensured not to be too large so that the pole piece 2 cannot be separated from the conveyor belt 1, and even the electrode slurry on the electrode 2 falls off.
In some embodiments of the present application, the material of the adhesion layer comprises glue.
In some embodiments of the present application, the pressing roller 3 includes a hot pressing roller, and the hot pressing roller can heat the pole piece 2 during rolling, so that the pole piece can be rolled more easily.
The battery pole piece preparation device is described in detail below with reference to fig. 7. FIG. 7 is a sectional view and a partially enlarged view of an apparatus for manufacturing a battery pole piece according to further embodiments of the present disclosure.
Referring to fig. 7, the pole piece 2 can be adhered to the conveyor belt 1 only by adding an adhesion layer on the conveyor belt of the conventional rolling device, so that the pole piece 2 is prevented from moving due to stress during the rolling process and the rolling is prevented from being influenced. The battery pole piece preparation device only needs to simply process the conventional rolling device, and is simple to manufacture and good in effect.
According to the battery pole piece preparation device, the pole piece is adsorbed on the conveying belt through the adhesion layer arranged on the conveying belt, and the situation that the rolling is influenced by the fact that the pole piece moves in the rolling process can be avoided.
An embodiment of the present application further provides a method for manufacturing a battery pole piece, referring to fig. 8, where fig. 8 is a flowchart of the method for manufacturing a battery pole piece in some embodiments of the present application, and the method includes:
step S110: providing an electrode current collector coated with the electrode slurry;
step S120: cutting the electrode current collector into single pole pieces;
step S130: and compacting the pole piece and the electrode slurry on the pole piece.
The preparation method of the battery pole piece is described in detail below.
Step S110, providing an electrode current collector coated with the electrode slurry.
In the embodiments described herein, the electrode paste may be a positive electrode paste or a negative electrode paste. When the electrode slurry is positive electrode slurry, the electrode current collector is a positive electrode current collector, and the positive electrode slurry and the positive electrode current collector are used for manufacturing a positive electrode piece; when the electrode slurry is negative electrode slurry, the electrode current collector is a negative electrode current collector, and the negative electrode slurry and the negative electrode current collector are used for manufacturing a negative electrode piece.
The electrode paste may include an active material, a conductive agent, a binder, a solvent, and the like. The electrode current collector may include metal fibers, carbon black-based fibers, conductive metal compound fibers, conductive polymer-type fibers, and the like.
And step S120, cutting the electrode current collector into single pole pieces. The cutting method may be a conventional method, and is not described herein. The size of the single pole piece can be set according to the requirement. The single pole piece comprises a pole ear.
Step S130, the electrode pole piece and the electrode slurry on the electrode pole piece are compacted by using the battery pole piece preparation device.
The pole piece is a cut single pole piece, so the size is small, the pole piece is easy to move in the conveying process, and particularly when the pole piece is rolled, the single pole piece needs to be rolled by using the battery pole piece preparation device. The pole piece is adsorbed on the conveying belt through the adhesion layer or the adsorption mechanism, so that the influence on rolling due to the movement of the pole piece in the rolling process can be avoided.
In the conventional technology for preparing the lithium battery, a rolling mode is adopted after the pole pieces are divided into strips, but the foils and material areas of the pole pieces have different malleability, so that the edges of the foils and the pole pieces are folded during rolling, even when high compaction is performed, the strips can be broken due to the fact that the foils and the foils are pulled under tension, the compaction density of the lithium battery is low, and the energy density is limited. In the preparation method of the battery pole piece, the pole piece is cut into single pieces and then rolled, the single piece of the pole piece does not have tension or broken strips in the transmission process, the pole lug is cut, the problem of wrinkles is avoided, and compaction can be improved, so that the energy density of the battery is improved
The application battery pole piece preparation facilities roll-in again after cutting into the monolithic with the pole piece earlier, monolithic pole piece can not have tension at the transmission in-process, can not have the problem of disconnected area to utmost point ear has cut, can not produce the problem of fold, thereby can improve the compaction and improve battery energy density, thereby be provided with the structure of adsorbing the pole piece on the conveyer belt on the battery pole piece preparation facilities, can avoid the pole piece to remove and influence the roll-in at the roll-in-process.
In view of the above, it will be apparent to those skilled in the art upon reading the present application that the foregoing application content may be presented by way of example only, and may not be limiting. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, modifications, and variations are intended to be within the spirit and scope of the exemplary embodiments of this application.
It is to be understood that the term "and/or" as used herein in this embodiment includes any and all combinations of one or more of the associated listed items. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present.
Similarly, it will be understood that when an element such as a layer, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, the term "directly" means that there are no intervening elements. It will be further understood that the terms "comprises," "comprising," "includes" or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It will be further understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element in some embodiments may be termed a second element in other embodiments without departing from the teachings of the present application. The same reference numerals or the same reference characters denote the same elements throughout the specification.
Further, the present specification describes example embodiments with reference to idealized example cross-sectional and/or plan and/or perspective views. Accordingly, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, example embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have rounded or curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of exemplary embodiments.
Claims (4)
1. A battery pole piece preparation device is characterized by comprising:
the conveying device comprises a winding device, an unwinding device and a conveying belt connected with the winding device and the unwinding device;
an adhesive layer disposed on the conveyor belt;
and the compression roller is positioned in the middle of the conveyor belt.
2. The manufacturing apparatus of claim 1, wherein the pressure roller comprises a heat and pressure roller.
3. The manufacturing apparatus of claim 1, wherein the material of the adhesive layer comprises glue.
4. The manufacturing apparatus as set forth in claim 1, wherein said winding device and said unwinding device are respectively provided at both ends of said conveyor belt, said winding device and said unwinding device being provided so as to advance said conveyor belt in a rolling direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120235106.5U CN214505544U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913694.9U CN212392268U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
| CN202120235106.5U CN214505544U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020913694.9U Division CN212392268U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
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| CN214505544U true CN214505544U (en) | 2021-10-26 |
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| CN202020913694.9U Active CN212392268U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
| CN202120235106.5U Active CN214505544U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
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| CN202020913694.9U Active CN212392268U (en) | 2020-05-26 | 2020-05-26 | Battery pole piece preparation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477836A (en) * | 2020-05-26 | 2020-07-31 | 苏州凌威新能源科技有限公司 | Preparation method and device of battery pole piece |
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2020
- 2020-05-26 CN CN202020913694.9U patent/CN212392268U/en active Active
- 2020-05-26 CN CN202120235106.5U patent/CN214505544U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477836A (en) * | 2020-05-26 | 2020-07-31 | 苏州凌威新能源科技有限公司 | Preparation method and device of battery pole piece |
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| CN212392268U (en) | 2021-01-22 |
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