CN216173685U - Coating device - Google Patents
Coating device Download PDFInfo
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- CN216173685U CN216173685U CN202122667235.4U CN202122667235U CN216173685U CN 216173685 U CN216173685 U CN 216173685U CN 202122667235 U CN202122667235 U CN 202122667235U CN 216173685 U CN216173685 U CN 216173685U
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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 utility model relates to the technical field of lithium ion battery manufacturing, and discloses a coating device which comprises a die head assembly and an air knife assembly, wherein the die head assembly is configured to respectively coat a first slurry and a second slurry on a workpiece to be coated so as to respectively form a first area and a second area; the air knife assembly comprises an air knife body, the air outlet end of the air knife body faces the workpiece to be coated, and the air knife assembly is configured to blow the first slurry and/or the second slurry on the workpiece to be coated so as to adjust the position of the first area and/or the second area. This coating device can be through the relative position of the first thick liquids of air knife subassembly adjustment and second thick liquids to make the clearance between first region and the second region reach and predetermine the clearance, can conveniently realize the adjustment in the clearance between first region and the second region, shorten the debugging time, improve debugging efficiency, guarantee coating quality and reduce cost.
Description
Technical Field
The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a coating device.
Background
In the production process of the lithium ion battery pole piece, the edge of the positive electrode slurry coating area needs to be coated with insulating slurry so as to avoid internal short circuit caused by the contact of a positive electrode tab and a negative electrode slurry material area after the winding/lamination of a battery core, thereby improving the safety performance of the battery. In the prior art, there are two ways to apply the insulating paste and the anode paste, the first way is to apply the anode paste and the insulating paste through one die at the same time, and the second way is to apply the anode paste and the insulating paste through two dies respectively. No matter which kind of mode is adopted for coating, all need consider the clearance problem between positive pole thick liquids and the insulating thick liquids during the coating to according to the kind adjustment clearance size of positive pole thick liquids and insulating thick liquids, among the prior art, the clearance adjustment operation between positive pole thick liquids and the insulating thick liquids is complicated, and the debugging time is long, makes coating efficiency hang down, and manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a coating device which can conveniently and quickly adjust the gap between two kinds of sizing agents, improve the coating efficiency and improve the coating quality.
Therefore, the utility model adopts the following technical scheme:
a coating apparatus, comprising:
a die assembly configured to apply a first slurry and a second slurry, respectively, onto a workpiece to be coated to form a first region and a second region, respectively;
the air knife assembly comprises an air knife body, the air outlet end of the air knife body faces the workpiece to be coated, and the air knife assembly is configured to blow the first slurry and/or the second slurry on the workpiece to be coated so as to adjust the position of the first area and/or the second area.
As a preferable aspect of the coating apparatus, the air knife assembly further includes:
the fan is communicated with the air knife body;
a regulating valve configured to regulate a flow rate of wind blown out by the wind knife body.
As a preferable mode of the coating device, the relative position between the air knife body and the workpiece to be coated is adjustable.
As a preferable aspect of the coating apparatus, the coating apparatus further includes a frame, the air knife assembly further includes a mounting structure, and the mounting structure includes:
the mounting piece is connected with the rack and is provided with an adjusting hole;
the adjusting shaft is fixedly connected with the air knife body, and one end of the adjusting shaft can rotatably penetrate through the adjusting hole;
a first fastener that is threaded through the mounting member and threadably engages the adjustment shaft to secure the adjustment shaft.
As a preferable mode of the coating apparatus, a relative position of the mounting member to the frame is adjustable.
As a preferred scheme of the coating device, the coating device further comprises a negative pressure assembly, the negative pressure assembly comprises a negative pressure piece and a vacuum generating piece communicated with the negative pressure piece, and an air inlet end of the negative pressure piece is arranged opposite to an air outlet end of the air knife body.
As a preferable mode of the coating device, the negative pressure assembly further comprises at least one partition plate, the partition plate is configured to partition the air inlet end of the negative pressure member to form at least two negative pressure cavities, and each negative pressure cavity is communicated with the vacuum generating member.
As a preferable scheme of the coating device, the width of the air inlet end of the negative pressure piece is 5 to 15 times of the width of the air outlet end of the air knife body.
As a preferable aspect of the coating apparatus, the coating apparatus further includes a drying assembly configured to dry the first region and the second region, and the air knife body is located between the die assembly and the drying assembly.
As a preferable scheme of the coating device, the number of the first areas is at least one, the second areas are arranged on two sides of each first area, and the air knife body is arranged between each first area and the second area adjacent to the first area.
The utility model has the beneficial effects that:
the utility model provides a coating device which comprises a die head assembly and an air knife assembly, wherein the die head assembly respectively coats first slurry and second slurry on a workpiece to be coated to form a first area and a second area respectively, the air knife assembly comprises an air knife body, an air outlet end of the air knife body faces the workpiece to be coated to blow the first slurry and/or the second slurry on the workpiece to be coated, and the positions of the first area and the second area are adjusted, so that the gap between the first area and the second area reaches a preset gap, the adjustment of the gap between the first area and the second area can be conveniently realized, the debugging time is shortened, the debugging efficiency is improved, the coating quality is ensured, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a coating apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coating apparatus according to a second embodiment of the present invention.
Reference numerals:
1-a die assembly; 11-a first coating die; 12-a second coating die;
2-a wind knife assembly; 21-air knife body; 22-a regulating valve;
3-drying the assembly; 4-guide rollers;
5-back roll; 51-a first backing roll; 52-second backing roll;
100-workpiece to be coated.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Example one
The present embodiment provides a coating apparatus, as shown in fig. 1, the coating apparatus includes a die assembly 1 and a wind knife assembly 2, the die assembly 1 is configured to apply a first slurry and a second slurry onto a workpiece 100 to be coated to form a first region and a second region, respectively, the wind knife assembly 2 includes a wind knife body 21, a wind outlet end of the wind knife body 21 faces the workpiece 100 to be coated, and the wind knife assembly 2 is configured to blow the first slurry and/or the second slurry on the workpiece 100 to be coated to adjust a position of the first region and/or the second region, so that a gap between the first region and the second region can reach a preset gap. The coating device can conveniently adjust the gap between the first area and the second area, shorten the debugging time, improve the coating efficiency, ensure the coating quality and reduce the coating cost.
In the present embodiment, the workpiece 100 to be coated is specifically referred to as a current collector, and the first slurry and the second slurry are referred to as a positive electrode slurry and an insulating slurry, respectively. Of course, the coating apparatus can also be used for coating other kinds of workpieces 100 to be coated and other kinds of slurry, and can be set according to actual needs, which is not limited in this embodiment.
It will be appreciated that the coating speed may be adjusted to suit different coating needs. In this embodiment, the coating speed is in the range of 0 to 70 m/min.
Particularly, the structure of the air outlet end of the air knife body 21 can be one or more combined structures of a duckbill structure, a horn structure, a circular structure, an oval structure, a diamond structure and a strip structure, and can be set according to the requirement of actual gap adjustment.
Preferably, the air knife assembly 2 further comprises a regulating valve 22 and a fan, the fan is communicated with the air knife body 21, the regulating valve 22 is configured to regulate the flow rate of the air blown out by the air knife body 21, so as to regulate the blowing air speed to a proper range, avoid the situation that the slurry is poor in fitting property or overlapped with the workpiece 100 to be coated due to overlarge air speed, and guarantee the coating quality of the workpiece 100 to be coated due to overlarge air speed and overlarge gap between the first area and the second area.
Specifically, the air knife assembly 2 further comprises a pipeline, the air knife body 21 is communicated with the fan through the pipeline, and the regulating valve 22 is arranged on the pipeline and used for controlling the flow rate of air in the pipeline.
In the embodiment, the adjusting range of the wind speed is 0-5 m/s, and the adjusting range of the gap is 0-1 mm.
Preferably, the relative position between the air knife body 21 and the workpiece 100 to be coated is adjustable, and the position of the air knife body 21 can be adjusted according to the adjustment requirement of the gap between the first area and the second area, so that the adjustment range of the air knife assembly 2 and the application range of the coating device are expanded.
Specifically, the coating device further comprises a frame, the air knife assembly 2 comprises a mounting structure, the mounting structure comprises a mounting piece, an adjusting shaft and a first fastener, the mounting piece is connected with the frame, an adjusting hole is formed in the mounting piece, the adjusting shaft is fixedly connected with the air knife body 21, one end of the adjusting shaft is rotatably arranged in the adjusting hole in a penetrating mode, the first fastener can penetrate through the mounting piece along the axial direction of the adjusting shaft and is in threaded fit with the adjusting shaft to fix the adjusting shaft, so that the angle adjustment between the air outlet end of the air knife body 21 and the workpiece 100 to be coated is realized, the angle between the air knife body 21 and the workpiece 100 to be coated is in a proper range, the problem that the attachment performance of slurry and the workpiece 100 to be coated is poor or overlapped due to the fact that the angle between the air knife body 21 and the workpiece 100 to be coated is too large is avoided, and the problem that the gap between the first area and the second area is too large due to the fact that the angle between the air knife body 21 and the workpiece 100 to be coated is too small, the coating quality of the workpiece 100 to be coated is ensured.
The specific process of the angle between the air knife body 21 and the workpiece 100 to be coated will be described below. When the angle between the air knife body 21 and the workpiece 100 to be coated needs to be adjusted, the first fastener is unscrewed, the adjusting shaft rotates relative to the adjusting hole, the adjusting shaft drives the air knife body 21 to rotate in the process, and when the air knife body 21 rotates to a proper position, the first fastener is screwed down, so that the adjustment of the angle between the air knife body 21 and the workpiece 100 to be coated is completed.
In the embodiment, the angle between the air outlet end of the air knife body 21 and the workpiece 100 to be coated is adjusted within the range of 0-90 °.
Further, the relative position between the mounting piece and the rack is adjustable, so that the position adjustment range of the air knife body 21 is further expanded, and the application range of the coating device is expanded.
Exemplarily, be provided with the bar through-hole on the installed part, mounting structure still includes the second fastener, and the second fastener can pass the bar through-hole and be fixed in on the frame, can adjust the relative position between installed part and the frame through adjusting the relative position of second fastener and bar through-hole.
Preferably, the coating device further comprises a negative pressure assembly, the negative pressure assembly comprises a negative pressure piece and a vacuum generating piece communicated with the negative pressure piece, and an air inlet end of the negative pressure piece is arranged opposite to an air outlet end of the air knife body 21 so as to collect and process air blown out from the air knife body 21 and reduce the influence on the parts, far away from each other, of the first area and the second area.
Further, the negative pressure assembly further comprises at least one partition board, the partition board is configured to partition an air inlet end of the negative pressure piece to form at least two negative pressure cavities, each negative pressure cavity is communicated with the vacuum generating piece, and the collecting and processing effect of the air blown out from the air knife body 21 can be further improved.
Preferably, the width of the air inlet end of the negative pressure piece is 5-15 times the width of the air outlet end of the air knife body 21, so that the effect of the negative pressure component on collecting and processing the air blown out by the air knife body 21 can be guaranteed.
Optionally, the coating apparatus further comprises a drying assembly 3, the drying assembly 3 being configured to dry the first area and the second area.
Exemplarily, the drying assembly 3 includes a box body, an infrared heating element is disposed in the box body, the infrared heating element is configured to dry the workpiece 100 to be coated, the workpiece 100 to be coated is dried by the infrared heating element, the heating is uniform, and the drying efficiency is high. Certainly, the setting of the drying component 3 is not limited to this, in other embodiments, the drying component 3 may also include a box body, a hot air duct is arranged in the box body, a plurality of air outlets are arranged on the hot air duct, and all face the workpiece 100 to be coated, so as to dry the workpiece 100 to be coated through hot air, or an infrared heating element and a hot air duct are simultaneously arranged in the box body, so as to further improve the drying efficiency of the workpiece 100 to be coated, and the setting may be performed according to the actual drying requirement, which is not limited in this embodiment.
Further, the air knife body 21 is located between the die assembly 1 and the drying assembly 3, that is, after the first slurry and the second slurry are both coated on the workpiece 100 to be coated and before the first area and the second area are dried, the air knife body 21 blows towards the position between the first area and the second area to blow the first slurry and/or the second slurry on the workpiece 100 to be coated so as to adjust the gap between the first area and the second area, and at this time, the flowability of the first slurry and the second slurry is good, so that the gap between the first area and the second area can be conveniently adjusted.
In this embodiment, the die head assembly 1 is an integrated die head, and the integrated die head can coat the first slurry and the second slurry on the workpiece 100 to be coated, and the air outlet end of the air knife body 21 is close to the integrated die head, so that the gap between the first region and the second region can be conveniently adjusted.
Preferably, the number of the first areas is at least one, the two sides of each first area are provided with the second area, the air knife bodies 21 are arranged between each first area and the second area adjacent to the first area, the size of each gap is adjusted through the air knife bodies 21, each gap can be guaranteed to be in the range of the preset gap, the coating quality of the workpiece 100 to be coated is guaranteed, and the coating efficiency is improved.
Specifically, the die head assembly 1 includes a first die head portion and two second die head portions, and the two second die head portions are respectively disposed on two sides of the first die head portion to respectively coat the second slurry on two sides of the first slurry, and the two sides of the first region are both provided with the air knife bodies 21 to respectively adjust the size of the gap on two sides of the first region. It is understood that when the number of the die assemblies 1 is plural, the plural die assemblies 1 are arranged at intervals in the direction perpendicular to the direction in which the workpiece 100 to be coated is conveyed.
Optionally, an unwinding roller, a winding roller and at least two guide rollers 4 are rotatably disposed on the frame, and the workpiece 100 to be coated is sequentially wound around the unwinding roller, each guide roller 4 and the winding roller, so as to realize the transmission of the workpiece 100 to be coated.
Further, the coating device also comprises a back roll 5 which is rotatably arranged on the frame, the back roll 5 is arranged opposite to the die head assembly 1, the workpiece 100 to be coated is conveyed between the back roll 5 and the die head assembly 1, and the back roll 5 provides a supporting function for the workpiece 100 to be coated so as to ensure the coating quality of the workpiece 100 to be coated. It can be understood that the air outlet end of the air knife body 21 is arranged opposite to the backing roller 5, so that the supporting effect of the workpiece 100 to be coated is good, and the coating quality of the workpiece 100 to be coated can be further ensured.
Optionally, the relative position of the at least one guide roller 4 to the frame is adjustable to adjust the tension of the workpiece 100 to be coated, thereby ensuring the coating quality of the workpiece 100 to be coated. In addition, the coating apparatus may further include a tension sensor for detecting a tension of the workpiece 100 to be coated, and the operator may adjust the position of the corresponding guide roller 4 according to the tension detected by the tension sensor, thereby adjusting the tension of the workpiece 100 to be coated.
Example two
This embodiment provides a coating apparatus which is different from the first embodiment in the arrangement of the die assembly 1.
In this embodiment, the die assembly 1 is a split die, and the split die can be conveniently adjusted and maintained. Specifically, as shown in fig. 2, the die assembly 1 includes a first coating die 11 and a second coating die 12, the first coating die 11 and the second coating die 12 being configured to apply a first slurry and a second slurry, respectively, onto the workpiece to be coated 100 to form a first region and a second region, respectively.
Preferably, the air knife body 21 is arranged close to the second coating die head 12, and the air knife body 21 is arranged between the second coating die head 12 and the drying assembly 3, so that the gap between the first area and the second area can be conveniently adjusted.
It is understood that the position of the air knife body 21 is not limited to this, and in other embodiments, the first coating die 11 and the second coating die 12 may be arranged at intervals along the conveying direction of the workpiece 100 to be coated, and the air knife body 21 is located between the first coating die 11 and the second coating die 12, that is, before the second slurry is coated, that is, the position of the first slurry is adjusted by the air knife body 21, and may be set according to the actual coating requirement, and this embodiment does not limit this.
In the present embodiment, the backing roll 5 includes a first backing roll 51 and a second backing roll 52, the first backing roll 51 and the second backing roll 52 are both rotatably disposed on the frame, the first backing roll 51 and the second backing roll 52 are respectively disposed opposite to the first coating die 11 and the second coating die 12, and the workpiece 100 to be coated is respectively conveyed between the first backing roll 51 and the first coating die 11 and between the second backing roll 52 and the second coating die 12.
In the description of the present specification, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or structure referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, cannot be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A coating apparatus, comprising:
a die assembly (1) configured to apply a first and a second slurry, respectively, onto a workpiece (100) to be coated to form a first and a second region, respectively; and
the air knife assembly (2) comprises an air knife body (21), the air outlet end of the air knife body (21) faces the workpiece (100) to be coated, and the air knife assembly (2) is configured to blow the first slurry and/or the second slurry on the workpiece (100) to be coated so as to adjust the position of the first area and/or the second area.
2. Coating apparatus according to claim 1, characterized in that said air knife assembly (2) further comprises:
the fan is communicated with the air knife body (21); and
a regulating valve (22), the regulating valve (22) being configured to regulate a flow rate of wind blown out by the wind knife body (21).
3. Coating device according to claim 1, characterized in that the relative position between the air knife body (21) and the piece to be coated (100) is adjustable.
4. Coating apparatus according to claim 3, characterized in that it further comprises a frame, said fan assembly (2) further comprising a mounting structure comprising:
the mounting piece is connected with the rack and is provided with an adjusting hole;
the adjusting shaft is fixedly connected with the air knife body (21), and one end of the adjusting shaft can be rotatably arranged in the adjusting hole in a penetrating mode; and
a first fastener that is threaded through the mounting member and threadably engages the adjustment shaft to secure the adjustment shaft.
5. A coating apparatus as claimed in claim 4, wherein the relative position of the mounting member and the frame is adjustable.
6. The coating device according to any one of claims 1 to 5, further comprising a negative pressure assembly, wherein the negative pressure assembly comprises a negative pressure member and a vacuum generating member communicated with the negative pressure member, and an air inlet end of the negative pressure member is arranged opposite to an air outlet end of the air knife body (21).
7. The coating apparatus of claim 6, wherein said suction assembly further comprises at least one partition configured to partition an air intake end of said suction member into at least two suction chambers, each of said suction chambers being in communication with said vacuum generating member.
8. The coating device of claim 6, wherein the width of the air inlet end of the negative pressure piece is 5 to 15 times the width of the air outlet end of the air knife body (21).
9. Coating apparatus according to any one of claims 1 to 5, characterized in that it further comprises a drying assembly (3), said drying assembly (3) being configured to dry said first zone and said second zone, said air knife body (21) being located between said die assembly (1) and said drying assembly (3).
10. The coating apparatus according to any one of claims 1 to 5, wherein the number of the first regions is at least one, the second regions are provided on both sides of each first region, and the air knife body (21) is provided between each first region and the second region adjacent thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122667235.4U CN216173685U (en) | 2021-11-02 | 2021-11-02 | Coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122667235.4U CN216173685U (en) | 2021-11-02 | 2021-11-02 | Coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216173685U true CN216173685U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122667235.4U Active CN216173685U (en) | 2021-11-02 | 2021-11-02 | Coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216173685U (en) |
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2021
- 2021-11-02 CN CN202122667235.4U patent/CN216173685U/en active Active
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