CN112371463A - Drying oven using air floating roller - Google Patents
Drying oven using air floating roller Download PDFInfo
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- CN112371463A CN112371463A CN202110059157.1A CN202110059157A CN112371463A CN 112371463 A CN112371463 A CN 112371463A CN 202110059157 A CN202110059157 A CN 202110059157A CN 112371463 A CN112371463 A CN 112371463A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
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Abstract
The invention relates to the technical field of drying ovens, in particular to a drying oven using an air floatation roller, which comprises a box body, an inlet and an outlet, and further comprises: a plurality of air supporting rollers all are on a parallel with ground and set up on the lateral wall of box, and the setting of staggering about a plurality of air supporting rollers in turn, and the air supporting roller includes: the inner roller core is of a hollow cylindrical structure, a plurality of convex blocks are arranged on the periphery of the inner roller core in a surrounding mode along the axial direction of the inner roller core, the connecting line of the centers of the top walls of the convex blocks forms the outer outline of the air floating roller, the bottoms of two adjacent convex blocks are connected through the inner roller core, air outlet holes are formed in the side walls of the convex blocks along the axial direction of the inner roller core, air outlet cavities are formed in the inner parts of the convex blocks and the inner part of the inner roller core, and the air outlet cavities are communicated with the; the air return device is arranged in the oven and transmits air flow in the oven to the outside of the oven. The drying oven using the air floatation roller can reduce the floor area of the drying oven and accurately control the deformation of the diaphragm in the drying process.
Description
Technical Field
The invention relates to the technical field of drying ovens, in particular to a drying oven using an air floatation roller.
Background
The coating machine is an important production device widely used in the industries of electronics, photovoltaics, printing, textile, leather and the like. The lithium ion battery needs to form a repeated overlapping unit of positive electrode/diaphragm/negative electrode/diaphragm due to the specific structure and characteristics of the lithium ion battery, and the coating process is particularly suitable for manufacturing each layer. Therefore, the coating machine is widely applied to the manufacture of the anode and cathode of the lithium battery and the diaphragm coating. Slurry preparation, coating and drying are three basic steps in the coating process, and the product quality is determined together.
The existing drying process is realized by adopting an oven. The conventional oven is provided with a supporting roller to support the coated product, and the drying of the material is realized by using the heat in the oven. The backing roll is in contact with the product during the drying process, affects the quality of the product, and cannot realize the primary drying process after double-sided coating. Patent CN109332087A discloses a lithium ion battery separator using a suspension oven, a preparation method thereof and a coating device, wherein two sides of a product are coated in sequence, and then the product is supported by air flow in the oven for drying, so as to realize one-time drying of double-sided coating.
Problem 2 of the prior art: the existing oven is characterized in that an air outlet is formed in the oven, the air outlet blows air to the upper surface and the lower surface of a lithium battery diaphragm, the air outlet blows hot air to dry the diaphragm, the diaphragm is guaranteed to be suspended in the oven, and certain deformation can be generated in the length direction in the drying process after the diaphragm is coated. For example: the diaphragm coat is macromolecular material, after the chance heats, the length of diaphragm can shorten, if the diaphragm coat is metal material, after the chance heats, the length of diaphragm can increase, transmission speed can produce the drawing to the diaphragm when diaphragm length shortens, lead to the diaphragm to warp, and then lead to diaphragm porosity increase, use and lead to the fact the lithium cell short circuit in the lithium cell, when diaphragm length grow, the diaphragm is lax, the diaphragm of the state of originally suspending can attach to the air outlet surface, the coating that leads to the diaphragm is stained with the air outlet surface, lead to the destruction of diaphragm coating, when using on the lithium cell, also can lead to the lithium cell short circuit equally, influence the security that the lithium cell used.
The existing solution is as follows: and tension difference exists between the diaphragm unwinding and winding mechanisms, and the tension difference is the force for driving the diaphragm to move. When the diaphragm is deformed, the tension difference between the unwinding mechanism and the winding mechanism is adjusted, so that the tension difference on the diaphragm is constant, and stable drying is realized. When the diaphragm becomes long, the tension of the diaphragm winding mechanism is increased, so that the tension difference between the winding mechanism and the unwinding mechanism is increased, the tension on the whole diaphragm is constant, when the diaphragm shortens, the tension of the winding mechanism is reduced, the tension difference between the winding mechanism and the unwinding mechanism is reduced, and the tension on the whole diaphragm is constant.
However, when the diaphragm is long and the tape-moving speed is high, the tension on the diaphragm in the oven is ensured to be constant by controlling the tension of the winding mechanism, and the control method has poor precision and slow control feedback speed. Particularly in a suspension oven, the diaphragm moving belt does not contact any roller, the suspension effect of air flow is completely relied on, and the stability of the diaphragm is influenced by the slow feedback speed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of among the prior art two-sided coated lithium battery diaphragm can only be long straight walking position in the in-process of oven stoving, lead to oven area big to and the diaphragm can produce deformation at the stoving in-process, prior art adopts the poor control of tension, has the poor slow technical problem of feedback of precision. The invention provides a drying oven using an air floatation roller, which can reduce the floor area of the drying oven under the condition of drying a lithium battery diaphragm coated on two sides with the same length, and can accurately control the deformation of the diaphragm in the drying process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an use drying oven of air supporting roller for lithium battery diaphragm's drying, includes the box, be equipped with import and the export that holds lithium battery diaphragm and pass through on the box, still include:
a plurality of air supporting rollers, it is a plurality of the air supporting roller all is on a parallel with ground setting on the lateral wall of box to a plurality of the setting of staggering in turn from top to bottom of air supporting roller, the air supporting roller includes: the roller comprises an inner roller core, wherein the inner roller core is of a hollow cylindrical structure, a plurality of convex blocks are arranged on the periphery of the inner roller core in a surrounding manner along the axial direction of the inner roller core, connecting lines of the centers of top walls of the convex blocks form the outline of the air floatation roller, the convex blocks are hollow, the bottoms of two adjacent convex blocks are connected through the inner roller core, air outlet holes are formed in the side walls of the convex blocks along the axial direction of the inner roller core, air outlet cavities are formed in the inner parts of the convex blocks and the inner part of the inner roller core and communicated with the air outlet holes;
the air return device is arranged in the oven and transmits the air flow in the oven to the outside of the oven.
Set up the lug through the axis direction encircleing along the interior roller core, set up the exhaust vent on the lateral wall of lug, the air current blows off from the exhaust vent, the wind that blows off is most to adjacent lug, the minority blows to the clearance department of adjacent lug, wind blows on the lateral wall of adjacent lug, blow to the surface of lithium battery diaphragm (turn round from adjacent lug lateral wall and blow to the surface of lithium battery diaphragm) through turning round for the first time, can produce the air cushion layer between air supporting roller and lithium battery diaphragm, this air cushion layer can realize the non-contact suspension of lithium battery diaphragm under the condition that does not cause the damage of lithium battery diaphragm, the blow hole that compares in prior art directly blows to the surface of lithium battery diaphragm, can avoid forming wave or corrugating on ultra-thin lithium battery diaphragm.
The air floating rollers are used in the oven, so that the diaphragm coated on the two sides can be suspended, the air floating rollers are arranged in a staggered mode up and down, and when the wind-up roller outside the oven provides traction force for the diaphragm, the diaphragm can be conveyed along the air floating rollers in a curve mode, and therefore the floor area of the oven is reduced.
The exhaust vent evenly arranges along the lateral wall of lug, and the exhaust vent of evenly arranging simultaneously goes out the air on the whole lug lateral wall, and the wind that goes out can flow equalize at the axis direction to can blow to the bottom of lithium battery diaphragm along the advancing direction of lithium battery diaphragm under the state of lithium battery diaphragm motion, thereby form a surface contact with lithium battery diaphragm between the surface, thereby form planar air cushion layer, further increase the lifting surface area of lithium battery diaphragm, guarantee the stationarity of non-contact tape transport.
The air-bearing roller further comprises: the outer roller core and the inner roller core are coaxially arranged, the outer roller core is arranged on the periphery of the inner roller core, the plurality of lugs penetrate out of the outer roller core, the air outlet hole is located outside the outer roller core, two adjacent lugs are connected through the side wall of the outer roller core, the outer roller core extends outwards along the axial direction of the outer roller core and extends out of the lugs, a first air return opening is formed in the outer roller core, the side walls of the two adjacent lugs and the inside of the outer roller core form an air return cavity, and the air return cavity is communicated with the first air return opening.
Through set up first return air inlet on outer roller core, the wind energy that comes out from the lug lateral wall is from the first return air inlet return air on the outer roller core, can avoid among the prior art when the curve transmission, and the air current in air supporting roller middle part flows from air supporting roller limit, leads to the condition of lithium cell diaphragm walking band off tracking and crumpling.
The top wall of the convex block is provided with a groove along the length direction of the convex block, and the air outlet is formed in the side wall of the groove. Through on the roof of lug and be equipped with the recess along its length direction, the exhaust vent is established in the recess, and the wind energy that the exhaust vent blew off is enough to the both sides return air of lug, and the return air effect is better, and the tape transport is more steady.
Preferably, the groove is a V-shaped groove, the angle of the V-shaped groove is 30-60 degrees, and the depth of the V-shaped groove is 5-20 times of the diameter of the air outlet. The side wall of the V-shaped groove is provided with the air outlet holes, the air holes can uniformly exhaust air and can generate an upward uniform air cushion layer after the flow equalization of the V-shaped groove, the angle of the V-shaped groove is 30-60 degrees, the flow equalization effect of the air outlet holes on two sides of the V-shaped groove is better, and when the depth of the V-shaped groove is 5-20 times of the diameter of the air outlet holes, the lithium battery diaphragm can be upwards supported by the air blown out from the air outlet holes on the side wall of the V-shaped groove and cannot be damaged.
And one end of the air floatation roller, which is close to the lithium battery diaphragm, is provided with the air outlet and the first air return opening within 180 degrees of the central angle of the air floatation roller. In the process of conveying the lithium battery diaphragm, no matter straight conveying or curve conveying is carried out, the effective use area of the air floatation roller is within 180 degrees of the central angle of the air floatation roller, therefore, one end, close to the lithium battery diaphragm, of the air floatation roller corresponds to the 180 degrees of the central angle of the air floatation roller, the air outlet hole and the first air return opening are arranged, and air outlet and air return can be carried out, so that energy can be saved.
The air outlet cavity is connected with an air blowing device through a first air pipe, and a first valve is arranged on the first air pipe. The air blowing device provides air flow, the air flow sequentially penetrates through the first air pipe and the air outlet cavity and is blown out along the air outlet hole, the first valve is arranged on the first air pipe, and the size of the air outlet amount of the air outlet hole can be conveniently controlled through the first valve.
Preferably, the air return cavity is connected with an air suction device through a second air pipe.
The drying oven using the air-floating roll of the present invention further comprises: the pressure sensor is arranged at one end, close to the lithium battery diaphragm, of the air floatation roller, and the pressure sensor and the first valve are in signal connection with the controller. Detect the tension on the lithium battery diaphragm that corresponds through pressure sensor to give the controller with the data transmission who detects, the air output of the first valve regulation exhaust vent of controller according to received data control, for example: the pressure sensor detects the pressure corresponding to the lithium battery diaphragm and transmits the pressure to the controller, the controller compares the tension value with a set tension value, when the tension value is smaller than the set tension value, the lithium battery diaphragm at the position is in a loose state, the controller controls the first valve to be adjusted to be large, the air outlet quantity of the air outlet hole is increased, the lithium battery diaphragm is jacked up by the increased air quantity, and therefore the set tension value is achieved; when the tension value is larger than the set tension value, the lithium battery diaphragm at the position is in a tight state, the controller controls the first valve to be adjusted to be small, air output of the air outlet is reduced, and due to the fact that air output is reduced, the height of the lithium battery diaphragm jacked up is reduced, so that the lithium battery diaphragm is not tight, and the set tension value is achieved.
Preferably, the plurality of air-float rollers are divided into an upper row and a lower row, wherein the upper row is close to the top wall of the oven, and the lower row is close to the bottom wall of the oven. Through the arrangement mode, the lithium battery diaphragm can be bent in the drying oven to a large extent, so that the drying oven with the same floor area can dry the lithium battery diaphragm with a longer length.
And air return devices are arranged on the bottom wall and the top wall of the oven and are provided with a plurality of second air return ports, the second air return ports correspond to the air floatation rollers one by one, and the second air return ports face to the corresponding ends, far away from the lithium battery diaphragm, of the air floatation rollers. The air output of the exhaust vent when the air supporting roller is greater than the return air volume of the return air port on the air supporting roller, just can make lithium battery diaphragm suspension, however, the air output constantly increases in the oven, leads to the atmospheric pressure in the oven constantly to strengthen, sets up the air return device and can make the atmospheric pressure in the oven invariable, because the air current that the exhaust vent blew off blows to lithium battery diaphragm, can be blockked by lithium battery diaphragm, and wind can be blown along the one end that the diaphragm was kept away from to the air supporting roller, with second return air inlet and air supporting roller one-to-one, the second return air inlet orientation corresponds the one end that lithium battery diaphragm was kept away from to the air supporting roller can more effectually carry.
In summary, according to the drying oven using the air floating roller of the present invention, the floor area of the oven can be reduced in the case of drying the double-coated lithium battery separator of the same length, and the deformation of the lithium battery separator during the drying process can be accurately controlled.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a drying oven of the present invention using air-floating rollers;
FIG. 2 is a schematic view of a first embodiment of an air flotation roller of the drying oven of the present invention using an air flotation roller;
FIG. 3 is a schematic view of a second embodiment of an air-bearing roller of the drying oven of the present invention using an air-bearing roller;
FIG. 4 is a schematic view of a cross-section 1 of a second embodiment of an air-floating roll of a drying oven using air-floating rolls of the present invention;
FIG. 5 is a schematic illustration of a cross-section 2 of a second embodiment of an air-floating roll of a drying oven of the present invention using an air-floating roll;
fig. 6 is a schematic view of a third embodiment of the air floating roller of the drying oven using the air floating roller of the present invention.
Reference numerals:
1. the air flotation roller comprises an air flotation roller body 10, an inner roller core, 20, a bump, 21, a groove, 22, an air outlet, 220, an air outlet cavity, 221, a first air pipe, 222, a first valve, 30, an outer roller core, 31, a first air return opening, 310, an air return cavity, 311, a second air pipe, 4, a box body, 41, an inlet, 42, an outlet, 5, an air return device, 51, a second air return opening, 6 and a lithium battery diaphragm.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 and 2, which are a first embodiment of the present invention, a drying oven using air flotation rollers for drying a lithium battery diaphragm 6 includes a box 4, wherein the box 4 is provided with an inlet 41 and an outlet 42 for allowing the lithium battery diaphragm 6 to pass through, and further includes: a plurality of air floatation rollers 1, an air return device 5, a pressure sensor and a controller.
Specifically, a plurality of air floatation rollers 1 are all arranged on the side wall of the box body 4 in parallel to the ground, and the plurality of air floatation rollers 1 are alternately staggered up and down;
preferably, the plurality of air-floating rolls 1 are divided into two rows, an upper row being close to the top wall of the oven and a lower row being close to the bottom wall of the oven.
The air-bearing roller 1 includes: the roller comprises an inner roller core 10, wherein the inner roller core 10 is of a hollow cylindrical structure, a plurality of convex blocks 20 are arranged on the periphery of the inner roller core 10 in a surrounding mode along the axial direction of the inner roller core, the connecting lines of the centers of the top walls of the convex blocks 20 form the outer outline of the air floating roller 1, the convex blocks 20 are hollow, the bottoms of two adjacent convex blocks 20 are connected through the inner roller core 10, air outlet holes 22 are formed in the side walls of the convex blocks 20 along the axial direction of the inner roller core 10, the air outlet holes 22 are uniformly arranged along the side walls of the convex blocks 20, an air outlet cavity 220 is formed in each of the inner portions of the convex blocks 20 and the inner portion of the inner roller core 10, the air outlet cavity 220 is connected with an air blowing device through a first air pipe 221;
the air return device 5 is arranged inside the oven and transmits air flow in the oven to the outside of the oven. All be equipped with air return device 5 at the diapire of oven and roof, air return device 5 is equipped with a plurality of second return air inlets 51, second return air inlet 51 and air supporting roller 1 one-to-one, and lithium cell diaphragm 6's one end is kept away from towards the air supporting roller 1 that corresponds to second return air inlet 51.
The pressure sensor is arranged at one end of the air flotation roller 1 close to the lithium battery diaphragm 6, and the pressure sensor and the first valve 222 are in signal connection with the controller.
The working process is as follows: firstly, the uncoated lithium battery diaphragm 6 enters the oven through an inlet 41 of the oven, sequentially passes through the upper row of air floatation rollers 1 and the lower row of air floatation rollers 1 which are arranged in a staggered mode, so that the lithium battery diaphragm 6 is in a wave shape and penetrates out of an outlet 42 of the oven, a wind-up roller is arranged outside the outlet 42 of the oven, the wind-up roller provides traction force for pulling the lithium battery diaphragm 6, then the air floatation rollers 1 start to wind air, the lithium battery diaphragm 6 is carried and suspended, a coating device outside the inlet 41 carries out double-sided coating on the lithium battery diaphragm 6, under the traction of the wind-up roller, the double-sided coated lithium battery diaphragm 6 realizes non-contact and wave-like transmission, and therefore the floor area of the oven is.
After the lithium battery diaphragm 6 is coated, due to the fact that the coated materials are different, the lithium battery diaphragm 6 can contract or extend in different degrees after being heated, the pressure corresponding to the lithium battery diaphragm 6 is detected through the pressure sensor and transmitted to the controller, the controller compares the tension value with a set tension value, when the tension value is smaller than the set tension value, the lithium battery diaphragm at the position is in a loose state, the controller controls the first valve 222 to be enlarged, the air outlet quantity of the air outlet hole 22 is increased, the lithium battery diaphragm 6 is jacked up by the increased air quantity, and therefore the set tension value is achieved; when this tension numerical value is greater than the tension numerical value of settlement, at this moment, the lithium battery diaphragm 6 of this department is in the state of straining, and the first valve 222 of controller control is transferred for a short time, reduces the air output of exhaust vent 22, because the amount of wind reduces, lithium battery diaphragm 6 is highly reduced by the jack-up for lithium battery diaphragm 6 is not tight, thereby reaches the tension value of settlement, realizes that the accurate deformation that reply lithium battery diaphragm 6 toasts the in-process and produce.
As shown in fig. 3 to 5, a second embodiment of the present invention:
the difference from the first embodiment of the present invention is that the air-floating roll 1 further includes:
the outer roller core 30, outer roller core 30 sets up with interior roller core 10 is coaxial, the periphery at interior roller core 10 is established to outer roller core 30, a plurality of lugs 20 all wear out outer roller core 30, exhaust vent 22 is located the outside of outer roller core 30, be connected through the lateral wall of outer roller core 30 between two adjacent lugs 20, outer roller core 30 stretches out in lug 20 along its axial direction, be equipped with first return air mouth 31 on the outer roller core 30, the inside of the lateral wall of two adjacent lugs 20 and outer roller core 30 forms return air cavity 310, return air cavity 310 communicates first return air mouth 31, return air cavity 310 is connected with the getter device through second trachea 311.
The second embodiment has the following beneficial effects: through set up first return air inlet 31 on outer roller core 30, the wind energy that comes out from the lug 20 lateral wall is from the first return air inlet 31 return air on outer roller core 30, can avoid among the prior art when the curve transmission, the air current in air supporting roller 1 middle part flows from air supporting roller 1 limit portion, leads to the condition of lithium cell diaphragm 6 walking band off tracking and crumpling.
As shown in fig. 6, a third embodiment of the present invention:
the difference from the second embodiment of the present invention is: a groove 21 is formed in the top wall of the bump 20 along the length direction of the bump, the air outlet 22 is formed in the side wall of the groove 21, the groove 21 is a V-shaped groove, the angle of the V-shaped groove is 30-60 degrees, and the depth of the V-shaped groove is 5-20 times of the diameter of the air outlet 22.
An air outlet 22 and a first air return opening 31 are arranged at one end of the air floating roller 1 close to the lithium battery diaphragm 6 within 180 degrees of the central angle of the air floating roller 1.
The third embodiment has the following beneficial effects: through on the roof of lug 20 and be equipped with recess 21 along its length direction, exhaust vent 22 establishes in recess 21, and the wind energy that exhaust vent 22 blew out can be to the both sides return air of lug 20, and the return air effect is better, and the tape transport is more steady. The side wall of the V-shaped groove is provided with the air outlet holes 22, air holes uniformly exhaust air, an upward uniform air cushion layer can be generated after the flow equalization of the V-shaped groove, when the angle of the V-shaped groove is 30-60 degrees, the flow equalization effect of the air outlet holes 22 on two sides of the V-shaped groove is better, and when the depth of the V-shaped groove is 5-20 times of the diameter of the air outlet holes 22, the lithium battery diaphragm 6 can be supported upwards by the air blown out of the air outlet holes 22 on the side wall of the V-shaped groove, and the lithium battery diaphragm 6 cannot be damaged.
One end of the air floatation roller 1, which is close to the lithium battery diaphragm 6, is provided with the air outlet 22 and the first air return opening 31 within 180 degrees of the central angle of the air floatation roller 1. In the process of conveying the lithium battery diaphragm 6, no matter straight conveying or curve conveying, the effective use area of the air floating roller 1 is within 180 degrees of the central angle of the air floating roller 1, so that one end, close to the lithium battery diaphragm 6, of the air floating roller 1 corresponds to the 180 degrees of the central angle of the air floating roller 1, the air outlet 22 and the first air return opening 31 are arranged, and energy can be saved when air is exhausted and returned.
In summary, according to the drying oven using the air-floating roller of the present invention, the floor area of the oven can be reduced in the case of drying the double-coated lithium battery separator 6 of the same length, and the deformation of the lithium battery separator 6 during the drying process can be accurately controlled.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (11)
1. The utility model provides an use drying oven of air supporting roller for the drying of lithium cell diaphragm (6), includes box (4), be equipped with import (41) and export (42) that hold lithium cell diaphragm (6) to pass through on box (4), its characterized in that still includes:
a plurality of air supporting rollers (1), it is a plurality of air supporting rollers (1) all are on a parallel with ground setting on the lateral wall of box (4), and a plurality of air supporting rollers (1) stagger the setting from top to bottom in turn, air supporting rollers (1) include:
the inner roller core (10) is of a hollow cylindrical structure, a plurality of lugs (20) are arranged on the periphery of the inner roller core (10) in a surrounding mode along the axial direction of the inner roller core, connecting lines of the centers of top walls of the lugs (20) form the outer contour of the air floatation roller (1),
the inner parts of the convex blocks (20) are hollow, the bottoms of two adjacent convex blocks (20) are connected through the inner roller core (10), air outlet holes (22) are formed in the side wall of each convex block (20) along the axial direction of the inner roller core (10), air outlet cavities (220) are formed in the inner parts of the convex blocks (20) and the inner parts of the inner roller cores (10), and the air outlet cavities (220) are communicated with the air outlet holes (22);
the air return device (5) is arranged inside the oven, and transmits airflow in the oven to the outside of the oven.
2. Drying oven using air-floating rollers, according to claim 1, characterized in that said air-outlet holes (22) are uniformly arranged along the side walls of the bumps (20).
3. Drying oven using air-floating rollers, according to claim 1, characterized in that said air-floating rollers (1) further comprise:
the outer roller core (30) and the inner roller core (10) are coaxially arranged, the outer roller core (30) is arranged on the periphery of the inner roller core (10), the plurality of bumps (20) penetrate through the outer roller core (30), the air outlet holes (22) are located outside the outer roller core (30), two adjacent bumps (20) are connected through the side wall of the outer roller core (30), the outer roller core (30) extends out of the bumps (20) along the axial direction, a first air return opening (31) is formed in the outer roller core (30), the side walls of two adjacent bumps (20) and the inside of the outer roller core (30) form an air return cavity (310), and the air return cavity (310) is communicated with the first air return opening (31).
4. Drying oven using air-floating rolls, according to claim 3, characterized in that said projections (20) are provided with grooves (21) on their top wall and along their length, said air-outlet holes (22) being provided on the side walls of the grooves (21).
5. Drying oven using air-floating rolls, according to claim 4, characterized in that the grooves (21) are V-shaped grooves with an angle of 30-60 ° and a depth of 5-20 times the diameter of the air outlet (22).
6. Drying oven using air-floating rolls according to claim 5, characterized in that said air outlet holes (22) and said first air return opening (31) are provided at the end of said air-floating roll (1) close to the lithium battery separator (6) within 180 ° of the central angle of said air-floating roll (1).
7. Drying oven using air flotation rollers according to claim 1, characterized in that the air outlet cavity (220) is connected with an air blowing device through a first air pipe (221), and a first valve (222) is arranged on the first air pipe (221).
8. Drying oven using air-floating rollers, according to claim 3, characterised in that the return air cavity (310) is connected to an aspirator through a second air duct (311).
9. The drying oven using air-floating rollers as claimed in claim 7, further comprising:
the pressure sensor is arranged at one end, close to the lithium battery diaphragm (6), of the air floatation roller (1);
a controller, the pressure sensor and the first valve (222) each in signal communication with the controller.
10. Drying oven using air-floating rollers, according to claim 1, characterized in that a plurality of said air-floating rollers (1) are divided into two rows, one upper, close to the top wall of the oven, and one lower, close to the bottom wall of the oven.
11. Drying oven using air-floating rollers according to claim 7, characterized in that air return means (5) are provided on both the bottom wall and the top wall of the oven, said air return means (5) being provided with a plurality of second air return openings (51), said second air return openings (51) corresponding one to said air-floating rollers (1), said second air return openings (51) facing the end of the corresponding air-floating roller (1) remote from the lithium battery diaphragm (6).
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| CN202110059157.1A CN112371463B (en) | 2021-01-18 | 2021-01-18 | Drying oven using air floating roller |
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| CN202110059157.1A CN112371463B (en) | 2021-01-18 | 2021-01-18 | Drying oven using air floating roller |
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| CN112371463B CN112371463B (en) | 2021-04-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809471A (en) * | 2021-09-18 | 2021-12-17 | 广西聚邦能源有限公司 | Drying box for lithium ion battery diaphragm |
| CN114164583A (en) * | 2021-12-07 | 2022-03-11 | 蓝廷新能源科技(绍兴)有限责任公司 | Air-floating roller type micro-concave coating method and device |
| WO2023128434A1 (en) * | 2021-12-27 | 2023-07-06 | 주식회사 엘지에너지솔루션 | Electrode sheet drying apparatus, electrode sheet manufacturing system comprising same, and electrode sheet drying method |
| CN116550572A (en) * | 2023-06-01 | 2023-08-08 | 海目星激光科技集团股份有限公司 | Diaphragm drying system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113809471A (en) * | 2021-09-18 | 2021-12-17 | 广西聚邦能源有限公司 | Drying box for lithium ion battery diaphragm |
| CN114164583A (en) * | 2021-12-07 | 2022-03-11 | 蓝廷新能源科技(绍兴)有限责任公司 | Air-floating roller type micro-concave coating method and device |
| CN114164583B (en) * | 2021-12-07 | 2023-09-26 | 蓝廷新能源科技(绍兴)有限责任公司 | Air-bearing roller type micro-concave coating method and device |
| WO2023128434A1 (en) * | 2021-12-27 | 2023-07-06 | 주식회사 엘지에너지솔루션 | Electrode sheet drying apparatus, electrode sheet manufacturing system comprising same, and electrode sheet drying method |
| CN116550572A (en) * | 2023-06-01 | 2023-08-08 | 海目星激光科技集团股份有限公司 | Diaphragm drying system and control method thereof |
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