CN216857225U - Lithium ion battery slurry coating nozzle and device - Google Patents
Lithium ion battery slurry coating nozzle and device Download PDFInfo
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- CN216857225U CN216857225U CN202220394256.5U CN202220394256U CN216857225U CN 216857225 U CN216857225 U CN 216857225U CN 202220394256 U CN202220394256 U CN 202220394256U CN 216857225 U CN216857225 U CN 216857225U
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Abstract
The utility model provides a lithium ion battery slurry coating sprayer and a lithium ion battery slurry coating device. The spray head comprises a feeding pipeline, a feeding valve arranged on the feeding pipeline, a discharging valve arranged on the discharging pipeline, a first slurry storage cavity, a second slurry storage cavity and a third slurry storage cavity which are sequentially communicated; the first slurry storage cavity and the second slurry storage cavity are located above the third slurry storage cavity, the feeding pipeline is communicated with the first slurry storage cavity, the discharging pipeline is communicated with the third slurry storage cavity, the spraying port is communicated with a communicating pipeline between the second slurry storage cavity and the third slurry storage cavity, and the size of one end, communicated with the spraying port, of the second slurry storage cavity is larger than that of one end, communicated with the first slurry storage cavity. The coating method can effectively prevent the phenomenon of tailing and eliminate the phenomenon of super thickness when starting spraying when the slurry for the lithium ion battery is coated, and is beneficial to improving the coating quality.
Description
Technical Field
The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a lithium ion battery slurry coating sprayer and a lithium ion battery slurry coating device.
Background
In the production process of the lithium ion battery, battery raw materials are required to be stirred into slurry, and then the slurry is sprayed on a metal foil through a coating sprayer. When the existing coating nozzle is used for coating, because the opening and closing of a coating valve cause sudden change of slurry pressure and flow, the slurry layer coated at the beginning is easily over thick, and the tailing at the end is easily caused, so that the coating is not uniform, and particularly when the intermittent coating is needed, the uneven coating caused by the over thick at the beginning and the tailing at the end is more serious.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a lithium ion battery slurry coating nozzle and a lithium ion battery slurry coating apparatus, which are used to solve the problems in the prior art that the slurry pressure and flow rate are suddenly changed due to the opening and closing of a spray valve, which easily causes the slurry layer coated at the beginning to be excessively thick and the slurry layer coated at the end to be smeared, resulting in uneven coating.
In order to achieve the above and other related objects, the present invention provides a lithium ion battery slurry coating nozzle, which comprises a feeding pipeline, a feeding valve arranged on the feeding pipeline, a discharging valve arranged on the discharging pipeline, and a first slurry storage chamber, a second slurry storage chamber and a third slurry storage chamber which are sequentially communicated; the first slurry storage cavity and the second slurry storage cavity are located above the third slurry storage cavity, the feeding pipeline is communicated with the first slurry storage cavity, the discharging pipeline is communicated with the third slurry storage cavity, the spraying port is communicated with a communicating pipeline between the second slurry storage cavity and the third slurry storage cavity, and the size of one end, communicated with the spraying port, of the second slurry storage cavity is larger than that of one end, communicated with the first slurry storage cavity.
Optionally, the second slurry storage chamber is of a drop-like configuration.
Optionally, the spray opening is located at an end of the conical structure.
Optionally, the lithium ion battery slurry coating nozzle further comprises a controller electrically connected with the feed valve and the discharge valve, and a time delay unit is arranged in the controller.
Optionally, the first slurry storage chamber, the second slurry storage chamber and the third slurry storage chamber are communicated with each other through a gap in the section bar.
Optionally, the spraying opening is communicated with a gap between the second slurry storage chamber and the third slurry storage chamber through a gap to form a three-phase communication opening, and the position of the spraying opening is higher than that of the three-phase communication opening.
Optionally, the lithium ion battery slurry coating nozzle comprises an upper module, a middle module, a lower module and a gasket, the upper surface of the middle module is provided with a first groove and a second groove at intervals, the lower surface of the middle module is provided with a third groove, the gasket is positioned between the upper module and the lower module, the gasket is provided with a gap, the upper module and the lower module are provided with grooves corresponding to the grooves of the middle module, the upper module and the lower module are connected in a sealing way through the gasket to form a closed space, the middle module is fixed in the closed space, the groove on the surface of the upper module is vertically matched with the first groove and the second groove to form the first slurry storage cavity and the second slurry storage cavity correspondingly, the groove on the surface of the lower module is vertically matched with the third groove to form the third slurry storage cavity, and the gap of the gasket forms the spraying opening.
Optionally, the upper module, the middle module and the lower module are all stainless steel modules.
The utility model also provides a lithium ion battery slurry coating device which comprises the lithium ion battery slurry coating sprayer in any scheme.
Optionally, the lithium ion battery slurry coating device further comprises a slurry recovery module, which is communicated with the discharge pipeline.
As described above, the lithium ion battery slurry coating nozzle and the lithium ion battery slurry coating apparatus according to the present invention have the following advantageous effects: the coating method can effectively prevent the phenomenon of tailing and eliminate the phenomenon of super thickness when starting spraying when the slurry for the lithium ion battery is coated, and is beneficial to improving the coating quality.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a lithium ion battery slurry coating nozzle provided by the present invention.
Fig. 2 is a schematic perspective view of a lithium ion battery slurry coating nozzle according to the present invention.
Fig. 3 shows an exemplary exploded view of a coating nozzle for coating lithium ion battery slurry according to the present invention.
Description of the element reference numerals
11 feed line
12 feeding valve
13 discharge pipeline
14 discharge valve
15 first slurry storage chamber
16 second slurry storage Chamber
17 third slurry storage Chamber
18 spraying nozzle
19 communication pipeline
191 three-phase communication port
21 upper module
22 module
221 first groove
222 second recess
223 third groove
23 lower module
24 shim
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. As in the detailed description of the embodiments of the present invention, the cross-sectional views illustrating the device structures are not partially enlarged in general scale for convenience of illustration, and the schematic views are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Spatially relative terms, such as "under," "below," "lower," "below," "over," "upper," and the like, may be used herein for convenience in describing the relationship of one element or feature to another element or feature illustrated in the figures. It will be understood that these terms of spatial relationship are intended to encompass other orientations of the device in use or operation in addition to the orientation depicted in the figures. Further, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.
In the context of this application, a structure described as having a first feature "on" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed in between the first and second features, such that the first and second features may not be in direct contact.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated. In order to keep the drawings as compact as possible, not all structures are labeled in the figures.
Please refer to fig. 1 to 3.
As shown in fig. 1 and 2, the present invention provides a lithium ion battery slurry coating nozzle, which includes a feeding pipeline 11, a feeding valve 12 disposed on the feeding pipeline 11, a discharging pipeline 13, a discharging valve 14 disposed on the discharging pipeline 13, and a first slurry storage chamber 15, a second slurry storage chamber 16, and a third slurry storage chamber 17 (or two ends of the second slurry storage chamber 16 are respectively communicated with the first slurry storage chamber 15 and the third slurry storage chamber 17) for containing slurry, the feeding pipeline 11 is communicated with a slurry source (not shown), and performs incoming supply control through the feeding valve 12, the discharging pipeline 13 and the discharging valve 14 are used for discharging slurry when not needed, and both the feeding valve 12 and the discharging valve 14 are preferably electrically operated valves; the first slurry storage cavity 15 and the second slurry storage cavity 16 are located above the third slurry storage cavity 17, the feeding pipeline 11 is communicated with the first slurry storage cavity 15, the discharging pipeline 13 is communicated with the third slurry storage cavity 17, the nozzle opening 18 is communicated with a communication pipeline 19 between the second slurry storage cavity 16 and the third slurry storage cavity 17, and the size of one end, communicated with the nozzle opening 18, of the second slurry storage cavity 16 is larger than that of one end communicated with the first slurry storage cavity 15, so that the resistance of slurry entering the second slurry spraying cavity is reduced when the slurry flows out.
The exemplary working process of the lithium ion battery slurry coating nozzle provided by the utility model is as follows: initially, the feed valve 12 is opened, and slurry enters the first slurry storage chamber 15 from the feed line 11 and flows into the second slurry storage chamber 16 through the communication line 19; when the discharge valve 14 is open, slurry will preferentially flow from the return communication line 19 into the third slurry storage chamber 17 and out through the discharge valve 14, e.g. back into the slurry recovery tank; when the discharge valve 14 is closed, the slurry flows out of the nozzle 18 and is sprayed on the metal foil; when spraying is not started, the feed valve 12 and the discharge valve 14 are opened firstly, so that the three storage cavities are filled with slurry, and when spraying is required, the discharge valve 14 is closed, so that the slurry flows out from the nozzle 18 and is sprayed on the metal foil; when the spraying needs to be stopped, the discharge valve 14 is opened firstly, then the feed valve 12 is closed, and the discharge valve 14 is closed after the delay time is 1-5 s, so that a certain negative pressure exists at the nozzle opening 18 due to the existence of the fluid, and the trailing phenomenon can be effectively prevented; when spraying is needed to be started, the discharge valve 14 is opened in advance, the feed valve 12 is opened, after the three storage cavities are filled with slurry, the discharge valve 14 is closed, spraying is started, the phenomenon of over thickness when spraying is started can be effectively eliminated, and therefore coating quality can be remarkably improved.
The first slurry storage chamber 15, the second slurry storage chamber 16 and the third slurry storage chamber 17 can be sized and shaped as desired. In a preferred example, the first slurry storage chamber 15 has a volume greater than the volumes of the other two storage chambers. And in a preferred example, the second slurry storage chamber 16 is of a drop-shaped structure, which is beneficial to further reduce the flow of slurry and reduce pressure loss, while the other two storage chambers may be cylindrical chambers.
In an example, the nozzle opening 18 is located at the end of a conical structure, and referring to fig. 1, the nozzle opening 18 is located at a position having a cross-sectional area much smaller than that of other regions, which facilitates flexible adjustment of the spraying direction of the nozzle opening 18.
As mentioned above, when the spraying operation needs to be stopped, the discharge valve 14 is opened first, the feed valve 12 is closed later, and the discharge valve 14 is closed after the delay time is 1-5 s, so that the tailing phenomenon can be effectively prevented, the process of delaying the closing of the discharge valve 14 can be manually operated, and can also be realized by presetting each valve, or the lithium ion battery slurry coating nozzle can be further provided with a controller (not shown) which is electrically connected with the feed valve 12 and the discharge valve 14, wherein a delay device is arranged in the controller, that is, the controller controls the opening and closing operations of each valve, so as to improve the automation level of the spraying operation.
The communication line 19 of each storage chamber may be a physically separate conduit, and in one example, the first slurry storage chamber 15, the second slurry storage chamber 16 and the third slurry storage chamber 17 are communicated through a gap in a profile, which is also the material forming each storage chamber, and a gap is reserved between the storage chambers as the communication line 19 without providing a separate conduit, which contributes to the simplification of the overall structure of the head. Similarly, the nozzle port 18 may communicate with a gap between the second slurry storage chamber 16 and the third slurry storage chamber 17 through a gap, so that a three-phase communication port 191 is formed at a position where the second slurry storage chamber 16, the third slurry storage chamber 17 and the nozzle port communicate with each other, and the nozzle port 18 is preferably located higher than the three-phase communication port 191, that is, the gap connecting the nozzle port forms a downward curve at an end away from the nozzle port, so that when spraying is to be stopped, the pressure of the flowing fluid is reduced, the nozzle port is slightly under negative pressure, and the material in the nozzle port is recovered a little bit, thereby preventing tailing.
In the case that the storage cavities are communicated with each other through the gap of the profile, in a preferred example, as shown in fig. 3, the lithium ion battery slurry coating nozzle comprises an upper module 21, a middle module 22, a lower module 23 and a gasket 24, wherein a first groove 221 and a second groove 222 are formed on the upper surface of the middle module 22 at intervals, a third groove 223 is formed on the lower surface of the middle module 22, the gasket 24 is located between the upper module 21 and the lower module 23, a gap is formed on the gasket 24, grooves corresponding to the grooves of the middle module 22 are formed on the upper module 21 and the lower module 23, the upper module 21 and the lower module 23 are connected in a sealing manner through the gasket 24 to form a closed space, the middle module 22 is fixed in the closed space, the grooves on the surface of the upper module 21 are vertically matched with the first groove 221 and the second groove 222 to form the first slurry storage cavity 15 and the second slurry storage cavity 16, the groove on the surface of the lower module 23 and the third groove 223 are matched up and down to form the third slurry storage chamber 17, the gap of the gasket 24 forms the nozzle opening 18, the thickness of the gasket 24 determines the spraying thickness, and the width of the gap determines the spraying width, so that gaskets 24 with different gap sizes and/or different thicknesses can be selected according to different requirements. The material of the upper module 21, the middle module 22, and the lower module 23 may be set according to the requirement, and is preferably a stainless steel module, but not limited thereto, and the gasket 24 is, for example, a rubber sheet. Of course, in other examples, each storage chamber may be a chamber separately manufactured and connected by a pipe, but with the above structure, the overall structure of the spray head may be simplified, and the manufacturing cost may be reduced.
The utility model also provides a lithium ion battery slurry coating device, which comprises the lithium ion battery slurry coating nozzle in any scheme, so that the introduction of the lithium ion battery slurry coating nozzle can be fully referred to, and is not repeated for the sake of brevity. The lithium ion battery slurry coating device can further comprise a slurry recovery module which is communicated with the discharge pipeline, the slurry recovery module can comprise a recovery pipeline and a recovery tank which are communicated with the discharge pipeline, and can also be an open type recovery tank which is directly placed below the discharge pipeline, but the former mode is preferred. In addition to the above differences, other structures of the slurry coating apparatus for a lithium ion battery provided in this embodiment, such as a slurry supply module, can adopt the existing structure, and since this part is not the utility model point of this application, this will not be developed in detail. Owing to adopt the shower nozzle that this application provided for coating unit that this application provided can effectively prevent the phenomenon of trailing and eliminate the super thick phenomenon when beginning the spraying when being used for lithium ion battery's thick liquids coating, helps improving coating quality.
In summary, the utility model provides a lithium ion battery slurry coating nozzle and a lithium ion battery slurry coating device. The spray head comprises a feeding pipeline, a feeding valve arranged on the feeding pipeline, a discharging valve arranged on the discharging pipeline, and a first slurry storage cavity, a second slurry storage cavity and a third slurry storage cavity which are sequentially communicated; the first slurry storage cavity and the second slurry storage cavity are located above the third slurry storage cavity, the feeding pipeline is communicated with the first slurry storage cavity, the discharging pipeline is communicated with the third slurry storage cavity, the spraying port is communicated with a communicating pipeline between the second slurry storage cavity and the third slurry storage cavity, and the size of one end, communicated with the spraying port, of the second slurry storage cavity is larger than that of one end, communicated with the first slurry storage cavity. The coating method can effectively prevent the phenomenon of tailing and eliminate the phenomenon of super thickness when starting spraying when the slurry for the lithium ion battery is coated, and is beneficial to improving the coating quality. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The lithium ion battery slurry coating nozzle is characterized by comprising a feeding pipeline, a feeding valve, a discharging pipeline and a discharging valve, wherein the feeding valve and the discharging pipeline are arranged on the feeding pipeline; the first slurry storage cavity and the second slurry storage cavity are located above the third slurry storage cavity, the feeding pipeline is communicated with the first slurry storage cavity, the discharging pipeline is communicated with the third slurry storage cavity, the spraying port is communicated with a communicating pipeline between the second slurry storage cavity and the third slurry storage cavity, and the size of one end, communicated with the spraying port, of the second slurry storage cavity is larger than that of one end, communicated with the first slurry storage cavity.
2. The lithium ion battery slurry coating nozzle of claim 1, wherein the second slurry storage chamber is of a drop-like structure.
3. The lithium ion battery slurry coating nozzle of claim 1, wherein the spray opening is located at an end of a conical structure.
4. The lithium ion battery slurry coating nozzle of claim 1, further comprising a controller electrically connected to the feed valve and the discharge valve, wherein a time delay is disposed in the controller.
5. The lithium ion battery slurry coating nozzle of claim 1, wherein the first slurry storage chamber, the second slurry storage chamber and the third slurry storage chamber are communicated with each other through a gap in the section bar.
6. The lithium ion battery slurry coating nozzle according to claim 5, wherein the spraying opening is communicated with a gap between the second slurry storage chamber and the third slurry storage chamber through a gap to form a three-phase communication opening, and the position of the spraying opening is higher than that of the three-phase communication opening.
7. The lithium ion battery slurry coating nozzle according to any one of claims 1 to 6, comprising an upper module, a middle module, a lower module and a gasket, wherein the upper surface of the middle module is provided with a first groove and a second groove at intervals, the lower surface of the middle module is provided with a third groove, the gasket is located between the upper module and the lower module, the gasket is provided with a gap, the upper module and the lower module are provided with grooves corresponding to the grooves of the middle module, the upper module and the lower module are connected in a sealing manner through the gasket to form a closed space, the middle module is fixed in the closed space, the grooves on the surface of the upper module and the first grooves and the second grooves are vertically matched to form the first slurry storage cavity and the second slurry storage cavity, and the grooves on the surface of the lower module and the third groove are vertically matched to form the third slurry storage cavity, the gap of the gasket forms the spraying opening.
8. The lithium ion battery slurry coating nozzle of claim 7, wherein the upper module, the middle module, and the lower module are stainless steel modules.
9. A lithium ion battery slurry coating apparatus, characterized in that the lithium ion battery slurry coating apparatus comprises the lithium ion battery slurry coating nozzle according to any one of claims 1 to 8.
10. The lithium ion battery slurry coating apparatus of claim 9, further comprising a slurry recovery module in communication with the discharge line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220394256.5U CN216857225U (en) | 2022-02-25 | 2022-02-25 | Lithium ion battery slurry coating nozzle and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220394256.5U CN216857225U (en) | 2022-02-25 | 2022-02-25 | Lithium ion battery slurry coating nozzle and device |
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| CN216857225U true CN216857225U (en) | 2022-07-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041368A (en) * | 2022-08-16 | 2022-09-13 | 江苏时代新能源科技有限公司 | Coating device |
| CN116360513A (en) * | 2023-06-01 | 2023-06-30 | 江苏时代新能源科技有限公司 | Coating pump speed control method, device, equipment and medium |
-
2022
- 2022-02-25 CN CN202220394256.5U patent/CN216857225U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041368A (en) * | 2022-08-16 | 2022-09-13 | 江苏时代新能源科技有限公司 | Coating device |
| CN116360513A (en) * | 2023-06-01 | 2023-06-30 | 江苏时代新能源科技有限公司 | Coating pump speed control method, device, equipment and medium |
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