CN211838789U - Coating device of lithium ion battery - Google Patents
Coating device of lithium ion battery Download PDFInfo
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- CN211838789U CN211838789U CN201922221570.4U CN201922221570U CN211838789U CN 211838789 U CN211838789 U CN 211838789U CN 201922221570 U CN201922221570 U CN 201922221570U CN 211838789 U CN211838789 U CN 211838789U
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Abstract
The utility model belongs to the technical field of lithium ion battery, concretely relates to lithium ion battery's coating unit, including governing valve, mass flow portion and die head, the tip of mass flow portion with the governing valve is connected, be provided with the thick liquids export in the mass flow portion, the die head passes through the thick liquids export with mass flow portion intercommunication, the die head with be provided with the ooff valve between the thick liquids export. Compared with the prior art, the utility model discloses a set up mass flow portion, governing valve and ooff valve, utilize the governing valve to control the flow situation of thick liquids and adjust the pressure in the mass flow portion for mass flow portion pressure when coating and backward flow keeps unanimous, therefore realized the quick conversion between coating and the backward flow state, avoided the slow phenomenon of thick liquids response and thick liquids start time to be difficult to the problem of control among the traditional feeding process, the waste of pole piece material has been reduced widely, a large amount of manufacturing cost has been saved.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery, concretely relates to lithium ion battery's coating unit.
Background
Lithium ion batteries are widely used in various industries because of their advantages of high working voltage, high energy density, long cycle life, no memory, etc.
In the production process of the lithium ion battery, a coating method is adopted to coat the slurry to form the pole piece. However, the high-speed coating equipment for the anode ceramic of the lithium ion battery at present has at least the following defects in the use process:
1) the slurry pressure rises slowly, 3 screw pumps of 8L are adopted for feeding in the existing industry, each screw pump corresponds to two tabs, and the slurry conveyed by each screw pump is less, so that the pressure in a pipeline rises slowly, the waste of the foil material is serious, and more pole pieces are not coated on the two surfaces;
2) in order to reduce the waste of the pole piece foil, ceramic slurry needs to be opened in advance during production, the operation time is difficult to control, the opening of a screw pump in advance can cause the continuous overflow of the ceramic slurry from a die head lip, the ceramic slurry is easy to accumulate on the foil when the die head moves forward, an ultra-thick area cannot be completely dried in the baking process, a roll sticking phenomenon can be generated when the die head passes through an adhesive pressing roll area, obvious concave and convex points are easily generated on the surface of a pole piece due to continuous accumulation, and the quality of a product is further influenced;
3) in order to solve the problems, an independent dispensing system is introduced in the industry, the dispensing system is used for improving and controlling the coating amount of the ceramic slurry, but the dispensing equipment has high overall input cost, complex equipment structure and high difficulty in modification and maintenance, and is not beneficial to actual production.
Therefore, there is a need for improvements in the state of the art that are justifiable in order to meet the actual production needs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the defects of the prior art, the coating device for the lithium ion battery can effectively improve the pressure rising speed of coating, realize the quick response and constant pressure of feeding, reduce the waste of materials and improve the quality of products, has small difficulty in modification and maintenance and saves a large amount of production cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the coating device of the lithium ion battery comprises a regulating valve, a flow collecting part and a die head, wherein the end part of the flow collecting part is connected with the regulating valve, a slurry outlet is formed in the flow collecting part, the die head is communicated with the flow collecting part through the slurry outlet, and a switch valve is arranged between the die head and the slurry outlet. The regulating valve is used for controlling the on-off state of slurry at the outlet end of the collecting part and regulating the pressure in the collecting part; the switching valve is used for controlling the on and off of the slurry between the slurry outlet and the die head; the die head is arranged on the flow collecting part, so that the same path with the ceramic slurry is ensured, and the effect of simultaneous coating is achieved; when coating is carried out, the regulating valve is closed, the switch valve is opened, the pressure in the flow collecting part rises, and slurry enters the die head through the slurry outlet, so that the function of quick response is realized; and after the coating is finished, the coating enters a backflow state, the regulating valve is opened, the switch valve is closed, and the regulating valve is regulated to enable the pressure in the flow collecting part to be consistent with the pressure during coating, so that the rapid conversion between the coating and the backflow is realized, the waste of pole piece materials is reduced, a large amount of cost is saved, and the bad scrap risk caused by the pressure rising process of the ceramic slurry is reduced.
As an improvement to the coating apparatus for a lithium ion battery according to the present invention, a pressure detector is provided between the current collecting portion and the regulating valve. The pressure detector is used for monitoring the pressure in the collecting part in real time, and the regulating valve is adjusted through pressure data detected by the pressure detector, so that the pressure of slurry during coating and backflow is ensured to be consistent.
As right the utility model discloses in lithium ion battery's coating unit's improvement, the thick liquids export is a plurality of, and is a plurality of the thick liquids export interval is arranged. The thick liquids export sets up to a plurality ofly, can increase the unit flow of thick liquids, simultaneously, for guaranteeing the stability of feeding process, arranges every thick liquids export at interval for the thick liquids flow of every thick liquids export keeps unanimous, improves the even effect of coating.
As an improvement to the coating apparatus for lithium ion batteries described in the present invention, the number of the switching valves matches the number of the slurry outlets. The quantity of the switch valves is matched with the quantity of the slurry outlets, so that the switch valves can effectively cut off or communicate the slurry at the slurry outlets.
As right the utility model discloses in lithium ion battery's coating unit's improvement, the governing valve is provided with inlet port and venthole. The regulating valve is provided with the air inlet and the air outlet, so that the regulating valve is favorable for regulating the pressure in the flow collecting part, and the consistency of the coating pressure and the backflow pressure of the slurry is ensured.
As an improvement to the coating device of the lithium ion battery of the present invention, the regulating valve and the switch valve are pneumatic valves.
As an improvement to the coating device of the lithium ion battery of the present invention, the length of the current collecting portion is 400 mm-1000 mm. The flow collecting part mainly corresponds to the die head, so that the flow collecting part cannot be too long or too small, and if the length of the flow collecting part is too large, the transmission distance of the slurry can be increased, so that the pressure of the slurry in the conveying process is reduced, and the function of quick response cannot be realized; if the length of the collecting part is too small, the slurry pressure in the collecting part is too large, and the normal feeding is also influenced.
As an improvement to the coating apparatus for a lithium ion battery of the present invention, the inlet end of the current collecting portion is connected to a feed pump. The feeding pump is used for pumping the slurry so as to convey the slurry in the collecting part, and the slurry is coated on the pole piece foil through the die head.
As right the utility model discloses in lithium ion battery's coating unit's improvement, the feed pump is the screw pump.
As right the utility model discloses in lithium ion battery's coating unit's improvement, pressure detector is manometer or pressure transmitter. The manometer and pressure transmitter homoenergetic detect the thick liquids pressure in the mass flow portion, and wherein, the manometer can also carry out direct data reading, convenient record, and simultaneously, the low cost of manometer has further saved the cost of production.
The beneficial effects of the utility model reside in that: compared with the prior art, the utility model discloses a set up mass flow portion, governing valve and ooff valve, utilize the governing valve to control the flow situation of thick liquids and adjust the pressure in the mass flow portion for mass flow portion pressure when coating and backward flow keeps unanimous, therefore realized the quick conversion between coating and the backward flow state, avoided the slow phenomenon of thick liquids response and thick liquids start time to be difficult to the problem of control among the traditional feeding process, the waste of pole piece material has been reduced widely, a large amount of manufacturing cost has been saved.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided to explain the invention and not to constitute an undue limitation on the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
wherein, 1-adjusting valve; 2-a flow collection portion; 3-a die head; 4-a pressure detector; 5-a feed pump; 11-an air intake; 12-air outlet holes; 21-slurry outlet; 31-switching valve.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "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 description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
As shown in fig. 1, the coating device for the lithium ion battery comprises a regulating valve 1, a current collecting part 2 and a die head 3, wherein the outlet end of the current collecting part 2 is connected with the regulating valve 1, a slurry outlet 21 is arranged on the current collecting part 2, the die head 3 is communicated with the current collecting part 2 through the slurry outlet 21, and a switch valve 31 is arranged between the die head 3 and the slurry outlet 21. The regulating valve 1 is used for controlling the on-off state of slurry at the outlet end of the collecting part 2 and regulating the pressure in the collecting part 2; the switch valve 31 is used for controlling the on-off condition of the slurry between the slurry outlet 21 and the die head 3; the die head 3 is arranged on the flow collecting part 2, so as to ensure the same path with the ceramic slurry and achieve the effect of simultaneous coating; when the utility model is used for coating, the regulating valve 1 is closed, the switch valve 31 is opened, the pressure in the collecting part 2 rises, and slurry enters the die head 3 through the slurry outlet 21 for coating; and after coating, the coating enters a reflux state, at the moment, the regulating valve 1 is opened, the switch valve 31 is closed, and the pressure in the flow collecting part 2 is consistent with the pressure during coating by regulating the regulating valve 1, so that the rapid switching between coating and reflux is realized, the problems of slow response of slurry and difficult control of slurry starting time in the traditional feeding process are solved, the waste of pole piece materials is greatly reduced, and a large amount of production cost is saved.
Preferably, a pressure detector 4 is provided between the header 2 and the regulator valve 1. The pressure detector 4 is additionally arranged, so that the pressure in the collecting part 2 can be monitored in real time, and the regulating valve 1 is regulated according to pressure data detected by the pressure detector 4, so that the pressure of slurry during coating and refluxing is ensured to be consistent; wherein, pressure detector 4 can be manometer or pressure transmitter, but in order to carry out the record reading more conveniently, pressure detector 4 in this embodiment sets up to the manometer, and the cost of manometer is cheap, has further reduced the cost of production.
Preferably, the slurry outlet 21 is provided in plurality, the slurry outlets 21 are arranged at intervals, and the number of the on-off valves 31 matches the number of the slurry outlets 21. Set up slurry outlet 21 to a plurality ofly, can increase the unit flow of thick liquids, simultaneously, for guaranteeing the stability of feeding process, arrange every slurry outlet 21 interval for the slurry flow of every slurry outlet 21 keeps unanimous, thereby has improved the even effect of coating.
Preferably, the regulating valve 1 is provided with an inlet orifice 11 and an outlet orifice 12. The air inlet hole 11 and the air outlet hole 12 are arranged on the regulating valve 1, so that the regulating valve 1 is helpful to regulate the pressure in the collecting part 2, and the consistency of slurry coating and backflow pressure is ensured.
Preferably, the length of the collecting portion 2 is 400mm to 1000 mm. The flow collecting part 2 mainly corresponds to the die head 3, so that the flow collecting part 2 cannot be too long or too small, if the length of the flow collecting part 2 is too large, the transmission distance of the slurry can be increased, the pressure of the slurry in the conveying process is reduced, and the function of quick response cannot be realized; if the length of the collecting portion 2 is too small, the slurry pressure in the collecting portion 2 will be too large, and the normal feeding will be affected.
Preferably, the inlet end of the collecting part 2 is connected with a feeding pump 5. The feeding pump 5 is used for pumping slurry so as to convey the slurry into the collecting part 2, and then the slurry is coated on the pole piece foil through the die head 3.
In addition, in order to further improve the implementability of the present invention, in this embodiment, the regulating valve 1 is a conventional pneumatic regulating valve; the on-off valve 31 is a conventional pneumatic on-off valve; the pressure detector 4 is a conventional pressure gauge; the feed pump 5 is a conventional feed pump of the screw type.
The utility model discloses a working process does:
1) coating: closing the regulating valve 1, opening the switch valve 31, pumping slurry by the feeding pump 5, leading the slurry to pass through the flow collecting part 2 and enter the die head 3 through the slurry outlet 21, and finally extruding by the die head 3 to coat the pole piece foil;
2) refluxing: after coating is finished, the regulating valve 1 is opened, the switch valve 31 is closed, slurry flows back through the collecting part 2, at the moment, the regulating valve 1 is correspondingly regulated according to pressure information detected by the pressure detector 4, so that the pressure when the collecting part 2 flows back is consistent with the pressure when coating is carried out, and rapid switching between the regulating valve and the collecting part is realized.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. A coating device of a lithium ion battery is characterized in that: the slurry mixing device comprises a regulating valve (1), a flow collecting part (2) and a die head (3), wherein the end part of the flow collecting part (2) is connected with the regulating valve (1), a slurry outlet (21) is formed in the flow collecting part (2), the die head (3) is communicated with the flow collecting part (2) through the slurry outlet (21), and a switch valve (31) is arranged between the die head (3) and the slurry outlet (21).
2. The coating apparatus for a lithium ion battery according to claim 1, wherein: and a pressure detector (4) is arranged between the collecting part (2) and the regulating valve (1).
3. The coating apparatus for a lithium ion battery according to claim 1, wherein: the slurry outlet (21) is provided with a plurality of slurry outlets (21) which are arranged at intervals.
4. The coating apparatus for a lithium ion battery according to claim 3, wherein: the number of the on-off valves (31) is matched with the number of the slurry outlets (21).
5. The coating apparatus for a lithium ion battery according to claim 1, wherein: the regulating valve (1) is provided with an air inlet hole (11) and an air outlet hole (12).
6. The coating apparatus for a lithium ion battery according to claim 1, wherein: the regulating valve (1) and the switch valve (31) are pneumatic valves.
7. The coating apparatus for a lithium ion battery according to claim 1, wherein: the length of the collecting part (2) is 400 mm-1000 mm.
8. The coating apparatus for a lithium ion battery according to claim 1, wherein: the inlet end of the collecting part (2) is connected with a feeding pump (5).
9. The coating apparatus for a lithium ion battery according to claim 8, wherein: the feeding pump (5) is a screw pump.
10. The coating apparatus for a lithium ion battery according to claim 2, wherein: the pressure detector (4) is a pressure gauge or a pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922221570.4U CN211838789U (en) | 2019-12-12 | 2019-12-12 | Coating device of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922221570.4U CN211838789U (en) | 2019-12-12 | 2019-12-12 | Coating device of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211838789U true CN211838789U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922221570.4U Active CN211838789U (en) | 2019-12-12 | 2019-12-12 | Coating device of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211838789U (en) |
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2019
- 2019-12-12 CN CN201922221570.4U patent/CN211838789U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220125 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: 211100 Lantian Road 249, Airport Economic Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: Jiangsu Tafel Power System Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |