CN217369030U - Multiple preheating device of lithium-ion battery pole piece coating - Google Patents
Multiple preheating device of lithium-ion battery pole piece coating Download PDFInfo
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- CN217369030U CN217369030U CN202220919887.4U CN202220919887U CN217369030U CN 217369030 U CN217369030 U CN 217369030U CN 202220919887 U CN202220919887 U CN 202220919887U CN 217369030 U CN217369030 U CN 217369030U
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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
Abstract
The utility model relates to a multiple preheating device of lithium-ion battery pole piece coating, include along the substrate trend unwinding mechanism, coating mechanism, stoving mechanism and winding mechanism of placing, a serial communication port, coating mechanism with it preheats the subassembly to be provided with multiple between the stoving mechanism, multiple preheating assembly is used for preheating to the substrate behind the coating, multiple preheating assembly includes that the line type preheats the portion and the face type preheating portion, the face type preheating portion has a heat-conduction plane with the substrate laminating, preheats the follow-up of the portion that preheats with the face type through the fixed point of linear preheating portion and preheats, very big improvement the preheating effect of substrate.
Description
Technical Field
The utility model relates to a coating technology field specifically is a multiple preheating device of lithium-ion battery pole piece coating.
Background
Because the lithium battery pole piece has large coating moisture content and is difficult to dry, the traditional process only adopts a drying mechanism to heat the material by utilizing a hot air convection method, and the efficiency of heat energy permeation and conduction from the surface of the base material to the coating material is low, so that the coating is unevenly heated in the drying process, the surface is dried, and cracks are easily generated. Ultimately limiting the drying effect and coating speed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lithium-ion battery pole piece coating preheating device to solve the problem that proposes in the above-mentioned background art.
The utility model provides a technical scheme is: the utility model provides a lithium battery pole piece coating preheating device, include the unwinding mechanism who walks the line direction and set gradually along the substrate, coating mechanism, stoving mechanism and winding mechanism, be provided with multiple preheating assembly between coating mechanism and the stoving mechanism, multiple preheating assembly is used for preheating the substrate after the coating, multiple preheating assembly includes line type preheating part and face type preheating part, line type preheating part has one and can pass through the heating tape of short duration heating to the substrate, face type preheating part has one and laminates mutually and the heat-conduction plane of continuous heating with the wet coating of substrate another relative surface, heat-conduction plane and heating tape interval set up.
The linear preheating part includes a plurality of first heating rollers.
The surface type preheating part comprises a conveyor belt, the conveyor belt surrounds the two first heating rollers, one opposite sides of the heating rollers and the base material are provided with first heat sources, and the first heat sources are arranged on two sides of the conveyor belt.
And a transition roller and a back roller for reversing the substrate are also arranged between the unreeling mechanism and the coating mechanism.
The working temperature of the heat source is not higher than that of the drying mechanism. The backing roll is opposite the coating head of the coating mechanism.
The utility model discloses an improve and provide a lithium-ion battery pole piece coating preheating device here, compare with prior art, have following improvement and advantage:
through setting up the multiple subassembly of preheating, after substrate coating, through the multiple subassembly of preheating, the multiple subassembly of preheating heats the one side that the substrate did not coat coating, and the coating is conducted through the substrate to the heat to carry out by interior and outer preheating to the coating, and then improve drying efficiency, thereby when making follow-up stoving mechanism dry to the coating, the coating is heated more evenly, and then prevents that coating surface from appearing badly such as crack, improves lithium-ion battery pole piece's yield, improves the utility model discloses a practicality.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a prior art schematic;
FIG. 2 is a schematic view of a first process flow of an embodiment of the present invention;
FIG. 3 is a second schematic process flow diagram of an embodiment of the present invention;
FIG. 4 is a schematic view of a third process flow according to an embodiment of the present invention;
fig. 5 is a schematic view of a fourth process flow according to an embodiment of the present invention.
In the figure, an unreeling mechanism 1, a transition roller 2, a back roller 4, a coating mechanism 5, a multi-preheating assembly 6, a drying mechanism 7, a reeling mechanism 8, a storage tank 51, a screw pump 52, a servo control valve 53, a coating head 54, a first heating roller 61, a second heating roller 62, a conveyor belt 63 and a first heat source 64 are arranged.
Detailed Description
The core of the utility model is to provide a lithium-ion battery pole piece coating preheating device for improve the production efficiency of lithium-ion battery pole piece coating and improve the yield of product, prevent that crackle etc. from appearing in the coating bad.
The present invention will be described in detail with reference to fig. 2 to 4, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that the descriptions of "first", "second", etc. used in the embodiments of the present invention are only used for descriptive purposes, and should not be interpreted as indicating or implying any limitation to the number of technical features, and therefore, the features defined as "first", "second", etc. in the embodiments of the present invention may mean that at least one of the defined technical features is included.
The technical solutions between the embodiments of the present invention described in the present specification may be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art, and when the technical solutions are contradictory to each other or cannot be realized, the technical solutions should not be considered to be combined.
As shown in fig. 2-4, the utility model relates to a multiple preheating device of lithium-ion battery pole piece coating, be used for the coating machine to carry out the coating to the lithium-ion battery pole piece substrate and preheat the operation, include the unwinding mechanism 1 that the line direction set gradually along the substrate, coating mechanism 5, stoving mechanism 7 and winding mechanism 8, be provided with multiple preheating unit 6 between coating mechanism 5 and the stoving mechanism 7, multiple preheating unit 6 is used for preheating the substrate after the coating, multiple preheating unit 6 includes line type preheating part and face type preheating part, line type preheating part has one can be to the substrate through the heating tape of the short-term heating of time, face type preheating part has one and laminates and the heat-conduction plane of continuous heating mutually with another surface that the wet coating of substrate is relative, heat-conduction plane and heating tape interval set up.
In the course of the work, substrate after 5 coating coatings of coating mechanism, through multiple subassembly 6 of preheating, multiple subassembly 6 of preheating is with heat transfer to the substrate back, thereby conduct the wet coating on substrate surface with the heat, carry out interior and outer preheating to the coating, line type preheating part is through when the substrate is transmitted, the heating of going on when through fixed position, make the substrate all can dry to the substrate when every this position, heat-conduction plane and heat tape interval set up, preheat the follow-up preheating of and line type preheating part through the fixed point of linear preheating part, very big improvement the preheating effect of substrate.
The back of the substrate refers to the surface opposite the wet coating of the substrate.
If the coating standard of the lithium battery pole piece substrate is single-side coating, the side of the heating roller assembly 6, which is in contact with the substrate, is the uncoated surface of the substrate; if the coating standard of the lithium battery pole piece substrate is double-sided coating, the surface of the heating roller assembly 6 contacting with the substrate can be the uncoated surface of the substrate, or the coated surface of the substrate after complete drying.
Further, in the utility model discloses an embodiment, the substrate after the multiple subassembly 6 that preheats gets into stoving mechanism 7, and stoving mechanism 7 heats the substrate, and it should be said that stoving mechanism 7 is the preferred oven.
Specifically, because the substrate coating preheats subassembly 6 through multiple preheating, consequently, stoving mechanism 7 is when high-power is dried to the substrate coating, adverse effect such as crackle can not appear on substrate coating surface, when improving production speed, can not influence the quality of product, improves the utility model discloses a practicality.
The linear preheating part includes a plurality of first heating rollers 61, the plurality of first heating rollers 61 are uniformly distributed along the running direction of the substrate, and a heating belt is formed when the substrate passes through the first heating rollers 61.
Further, at least one pre-tightening mechanism is provided between adjacent two first heating rollers 61.
Specifically, the pre-tightening mechanism is matched with the first heating roller 61, so that the heat conduction surface can surround the first heating roller 61 and the pre-tightening mechanism to form the conveying belt 63, in one embodiment, the pre-tightening mechanism is in the form of the second heating roller 62, the conveying belt 63 can be kept compact, heating can be performed at the same time, and heat loss of the conveying belt 63 is avoided.
The diameter of the first heating roller 61 and the diameter of the second heating roller 62 may be the same or different.
In one embodiment of the present invention, the diameter of the first heating roller 61 is larger than the diameter of the second heating roller 62.
A wrap angle α 2 is formed between each first heating roller 61 and the substrate, and the value of the wrap angle α 2 is set according to the actual production process requirements.
The surface type preheating part includes a conveyor belt 63 formed of a heat transfer surface, the conveyor belt 63 surrounds two first heating rollers, a first heat source 64 is provided on the side of the heating rollers opposite to the substrate, and the first heat source 64 is provided on both sides of the conveyor belt 63.
The conveyor belt 63 formed by the heat conduction surface rotates along with the base material, the first heat source 64 continuously heats the conveyor belt 63, and therefore the base material is continuously preheated, the drying efficiency of the base material is further improved, meanwhile, the first hot roller also transfers heat to the conveyor belt 63 through the conveyor belt 63, on one hand, the temperature of the conveyor belt 63 is maintained, on the other hand, linear preheating is carried out, and the preheating speed of the base material is improved.
It should be noted that, the steel band is preferentially selected for use on the heat conduction plane to guarantee heat transfer efficiency when low cost, the effect of first heat source 64 is for providing the heat for every conveyer belt 63, and the concrete heating methods of first heat source 64 can be one or more compound mode of heating methods such as electric heating, water heating, electromagnetic heating, conduction oil heating, in the embodiment of the utility model, first heat source 64 chooses for use to be electric heating box, carries out large tracts of land heating to the steel band through electric heating box, thereby improves heating efficiency.
In an embodiment of the present invention, a reasonable wrap angle α 2 is set between each first heating roller 61 and the substrate, so that the substrate can be better attached to the first heating roller 61, the arc length of the first heating roller 61 attached to the substrate is in a suitable range, and the preheating effect on the substrate coating is further improved, and the practicability is further improved.
Through setting up a plurality of first heating rollers 61 and second heating roller 62 to follow the even interval distribution of substrate walk the line direction, thereby make when heating, the coating on substrate surface is heated more evenly.
Further, in one embodiment of the present invention, the temperature of the plurality of first heating rollers 61 is kept consistent, and the specific value of the temperature is set according to the requirement of the production standard.
In one embodiment of the present invention, the temperature of the plurality of first heating rollers 61 is different from each other, and the temperature of the first heating rollers 61 arranged along the substrate routing direction is sequentially increased, specifically, the temperature of the first heating roller 61 near the drying mechanism 7 is higher than the temperature of the first heating roller 61 near the back roller 4, and the heating temperature of the first heating roller 61 is not higher than the heating temperature of the drying mechanism 7 at the highest.
In an embodiment of the present invention, the temperature of the second heating rollers 62 is the same as the lowest temperature of the first heating roller 61, in the production process, the second heating rollers 62 can assist the substrate to preheat, prevent the heat loss in the wiring process, and the temperature of the second heating rollers 62 is the same as the lowest temperature of the first heating rollers 61, thereby reasonably using the energy, and further improving the utility model discloses a practicality.
It should be noted that, a plurality of second heating rollers 62 are disposed between two adjacent first heating rollers 61, and at least one second heating roller 62 is disposed between two adjacent first heating rollers 61, wherein the number of the second heating rollers can be any number, and the specific value thereof is determined according to the distance between two adjacent first heating rollers 61, so as to ensure that the heat on the back surface of the substrate is not excessively lost, thereby improving the preheating effect.
Further, the multiple preheating assembly 6 further includes a second heat source connected to each of the first heating rollers 61 and each of the second heating rollers 62, respectively, and the operating temperature of the second heat source is not higher than the operating temperature of the drying mechanism 7.
It should be noted that, the effect of the second heat source is to provide heat for every first warming mill 61 and second warming mill 62, and the concrete heating mode of second heat source can be one or more combination mode of heating modes such as electrical heating, water heating, electromagnetic heating, conduction oil heating, in the embodiment of the utility model, the second heat source is selected for use as the mould temperature machine.
Further, a transition roller 2 and a back roller 4 for reversing the substrate are arranged between the unreeling mechanism 1 and the coating mechanism 5.
The coating mechanism 5 comprises a storage tank 51, a screw pump 52, a servo control valve 53 and a coating head 54, wherein the back roller 4 is opposite to the coating head 54, the screw pump 52 is used for conveying the coating in the storage tank 51 to the coating head 54, the servo control valve 53 is used for controlling the discharging and discharging speed of the coating head 54, the coating head 54 is opposite to the back roller 4, when the base material passes through the back roller 4, the coating head 54 coats the surface of the base material, and the back roller 4 can support the base material, so that the coating effect of the coating can be improved.
Further, in one embodiment of the present invention, the back roll 4 has a wrap angle α 1 with the substrate; the value of the wrap angle alpha 1 is set according to the requirements of the actual production process.
The utility model discloses an in the embodiment, with setting up reasonable cornerite alpha 1 between backing roll 4 and the substrate to make when coating, the tensile force of substrate is in suitable state, thereby has ensured that the substrate is when coating, and inhomogeneous condition can not appear in the coating, improves the coating effect of coating, improves the utility model discloses a practicality.
The above only is the preferred embodiment of the present invention, and not therefore the limitation of the patent protection scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the contents of the specification and the drawings are made, or directly or indirectly use in other related technical fields, all together including the same reason in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a multiple preheating device of lithium-ion battery pole piece coating which characterized in that: including the unwinding mechanism, coating mechanism, stoving mechanism and the winding mechanism that set gradually along the line direction of substrate, coating mechanism with it preheats the subassembly to be provided with multiple between the stoving mechanism, multiple preheating assembly is used for preheating the substrate after the coating, multiple preheating assembly includes line type preheating part and face type preheating part, and line type preheating part has a heating tape that can pass through short-term heating to the substrate, face type preheating part has a heat-conduction plane of laminating and continuously heating mutually with another surface that the wet coating of substrate is relative, heat-conduction plane with the heating tape interval sets up.
2. The multiple preheating device of lithium battery pole piece coating of claim 1, characterized in that: the linear preheating part includes a plurality of first heating rollers.
3. The multiple preheating device of lithium battery pole piece coating of claim 1, characterized in that: at least one pre-tightening mechanism is arranged between two adjacent first heating rollers.
4. The multiple preheating device of lithium battery pole piece coating of claim 2, characterized in that: the surface type preheating part comprises a conveyor belt, the conveyor belt surrounds the two first heating rollers, one side, opposite to the base material, of each heating roller is provided with a first heat source, and the first heat sources are arranged on two sides of the conveyor belt.
5. The multiple preheating device of lithium battery pole piece coating of claim 3, characterized in that: and a transition roller and a back roller for reversing the substrate are also arranged between the unreeling mechanism and the coating mechanism.
6. The multiple preheating device of lithium battery pole piece coating of claim 4, characterized in that: the multiple preheating assembly further comprises a second heat source connected with the first heating roller.
7. The multiple preheating device of lithium battery pole piece coating of claim 6, characterized in that: the working temperature of the first heat source and the second heat source is not higher than that of the drying mechanism.
8. The multiple preheating device of lithium battery pole piece coating of claim 5, characterized in that: the backing roll is opposite the coating head of the coating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220919887.4U CN217369030U (en) | 2022-04-19 | 2022-04-19 | Multiple preheating device of lithium-ion battery pole piece coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220919887.4U CN217369030U (en) | 2022-04-19 | 2022-04-19 | Multiple preheating device of lithium-ion battery pole piece coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217369030U true CN217369030U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220919887.4U Active CN217369030U (en) | 2022-04-19 | 2022-04-19 | Multiple preheating device of lithium-ion battery pole piece coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217369030U (en) |
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2022
- 2022-04-19 CN CN202220919887.4U patent/CN217369030U/en active Active
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