A double-sided continuous coating device for lithium ion batteries and a coating method thereof

Abstract

The application belongs to the technical field of lithium ion battery preparation, and particularly relates to a double-sided continuous coating equipment for lithium ion batteries and a coating method thereof. In view of the problems of reducing work efficiency, improving energy consumption and lowering production capacity, the following scheme is proposed. The equipment comprises a bottom plate, two side plates fixedly connected to the top end of the bottom plate, a conveying part arranged between the two side plates to drive the movement of the pole piece, the conveying part being used for bending the pole piece into double layers, two first mounting blocks fixedly connected to the two side plates, the two first mounting blocks being arranged on the lower side of the two layers of pole pieces, two groups of coating mechanisms arranged in the two first mounting blocks to coat the positive and negative poles of the pole piece, and one group of swing mechanisms arranged at the side end of each of the two first mounting blocks, so that the work efficiency is effectively improved and the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium ion battery preparation, and particularly relates to a double-sided continuous coating equipment for lithium ion batteries and a coating method thereof. BACKGROUND

[0002] Lithium ion batteries are widely and rapidly applied in the fields of mobile phones, notebook computers, digital cameras and the like due to high specific energy, long cycle life, good safety performance, environmental friendliness and no memory effect. A lithium ion battery with light weight, small size, wide working temperature, good safety performance, high energy and long life is increasingly favored by people.

[0003] In the production of lithium batteries, the raw material pole piece of the lithium battery needs to be coated so that the positive and negative poles are coated with coating, and then the lithium battery can be produced. However, the thickness and surface density of the pole piece coated by the single-sided coating machine are not uniform, which causes poor consistency of the pole piece, thereby leading to poor consistency of the lithium ion battery, low matching rate, and even causing the lithium ion battery to catch fire and explode. Moreover, the coating machine in the prior art can only coat one side, that is, after the first side is coated and dried, the other side is coated and dried to obtain the positive and negative pole pieces, which reduces the working efficiency, increases the energy consumption, and reduces the production capacity.

[0004] In view of the above problems, the present application provides a double-sided continuous coating equipment for lithium ion batteries and a coating method thereof. SUMMARY

[0005] The present application provides a double-sided continuous coating equipment for lithium ion batteries and a coating method thereof, which solves the problem of reducing the working efficiency, increasing the energy consumption, and reducing the production capacity in the prior art.

[0006] The present application provides the following technical solutions:

[0007] The utility model provides a kind of lithium ion battery double-sided continuous coating equipment, including bottom plate, the top end both sides of bottom plate are fixedly connected with side plate;Conveying part, conveying part is located between two side plates to drive pole piece to move, the conveying part is bent into double layer by pole piece;Two first mounting blocks, two first mounting blocks are fixedly connected in two side plates, two the first mounting blocks are respectively located in the downside of two layers of pole piece;Two groups of coating mechanism, two groups of coating mechanism are respectively located in two first mounting blocks to the positive and negative pole of pole piece are coated, two the first mounting blocks side end are equipped with a group of swing mechanism, two groups of the swing mechanism respectively drive the swing coating of two groups of coating mechanism on the upside and downside;Two spatulas, two the spatula is respectively equipped in the upside of two first mounting blocks to be scraped even and scrape the excess coating raw material of pole piece after coating;Two groups of adjusting mechanism, two groups of adjusting mechanism are respectively located in two first mounting blocks to adjust the height of two spatulas;Drying part, drying part is located in two side plates to dry pole piece after the positive and negative pole of pole piece have been coated.

[0008] In a possible design, the conveying part includes a transmission roller rotatably connected between two side plates, first, second, third and fourth shafts rotatably connected in the two side plates, discharge rollers fixedly connected to the circumferential surfaces of the first and second shafts for discharging, feeding rollers fixedly connected to the circumferential surfaces of the third and fourth shafts for feeding, first and second gears fixedly connected to the circumferential surfaces of the first and second shafts for meshing, third and fourth gears fixedly connected to the circumferential surfaces of the third and fourth shafts for meshing, synchronous belts fixedly connected to the circumferential surfaces of the second and third shafts, and a synchronous wheel drivingly connected to the circumferential surfaces of the two synchronous belts, wherein the side end of one of the side plates is fixedly connected with a first driving motor, and the first driving motor is meshed with the first shaft through a shaft coupling.

[0009] In a possible design, each group of the coating mechanism includes a first accommodating groove formed in the first mounting block, a water pump fixedly connected to the side end of the first mounting block, a fifth shaft rotatably connected in the first mounting block, a communication pipe fixedly connected to the circumferential surface of the fifth shaft, a plurality of nozzles fixedly connected to the top end of the communication pipe, and an inlet pipe of the water pump in communication with the first accommodating groove and an outlet pipe of the water pump in communication with the communication pipe.

[0010] In a possible design, each group of the swing mechanism includes a driven gear fixedly connected to the circumferential surface of the fifth shaft, and a driving rack slidingly connected to the side end of the first mounting block and meshed with the driven gear.

[0011] In a possible design, the side end of one of the side plates is fixedly connected with a U-shaped frame, a rotating rod is rotatably connected in the U-shaped frame, a sliding plate is fixedly connected between the two driving racks, a sliding groove is formed in the sliding plate, a sliding block is slidably connected in the sliding groove, the sliding block is fixedly connected to the side end of the rotating rod, the side end of the U-shaped frame is fixedly connected with a second driving motor, and the second driving motor is connected with the rotating rod through a shaft coupling.

[0012] In a possible design, each of the adjusting mechanisms comprises a second accommodating groove formed in the first mounting block, a communication inclined groove communicated with the second accommodating groove and the first accommodating groove is formed in the first mounting block, a lifting lead screw is rotatably connected in the second accommodating groove, the scraper is threadedly connected to the circumferential surface of the lifting lead screw, the lifting lead screw is upwardly and outwardly movable through the side end of the first mounting block and extends upwardly and outwardly, a worm wheel is fixedly connected to the top end of the lifting lead screw, a worm is rotatably connected in the first mounting block and engaged with the worm wheel, the worm is outwardly movable through the side end of the first mounting block and extends outwardly, and a hand screw head is fixedly connected to the side end of the worm.

[0013] In a possible design, the drying mechanism comprises two mounting plates fixedly connected in the two side plates, and heating wires are arranged in the two mounting plates.

[0014] A coating method of a lithium ion battery double-sided continuous coating device, comprising the following steps:

[0015] S1, by starting the first driving motor to drive the first rotating shaft to rotate, the first rotating shaft drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the second rotating shaft to rotate, the first rotating shaft and the second rotating shaft drive the two discharge rollers to rotate, thereby dragging the pole piece to discharge, the second rotating shaft drives the synchronous belt to rotate, the synchronous belt drives the other synchronous belt to rotate through the synchronous wheel, the synchronous belt drives the third rotating shaft to rotate, the third rotating shaft drives the third gear and one of the feeding rollers to rotate, the third gear drives the fourth gear to rotate, the fourth gear drives the fourth rotating shaft to rotate, the fourth rotating shaft drives the other feeding roller to rotate, the two feeding rollers rotate to drag the pole piece to feed, and the pole piece is U-shaped through the overturning of the two transmission rollers, so that the two first mounting blocks are located on the positive and negative sides of the pole piece respectively;

[0016] S2, by starting the water pump to extract the coating raw material in the first accommodating groove, and conveying it into the communication pipe, spraying it uniformly to the positive and negative poles of the pole piece through the plurality of nozzles, and scraping the coating raw material uniformly through the scraper, while scraping the excess coating raw material away from the positive and negative poles of the pole piece, and flowing the scraped coating raw material along the side end of the scraper into the second accommodating groove;

[0017] S3, the second driving motor is started to drive the rotating rod to rotate, the rotating rod drives the sliding block to move in a circle, the sliding block slides in the sliding groove when moving in a circle, so that the sliding plate is driven to move back and forth, the sliding plate drives the two driving racks to move back and forth, the two driving racks drive the two fifth rotating shafts to rotate back and forth respectively, the two fifth rotating shafts drive the two communication pipes to rotate back and forth respectively through the two driven gears, so that the uniformity of coating is increased;

[0018] S4, after the positive and negative electrodes are coated, after passing between the two mounting plates, the positive and negative electrodes of the pole piece after coating can be dried.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application.

[0020] In the present application, the pole piece is bent by the conveying part, so that the positive and negative electrodes can be aligned with the first mounting block for coating, so that double-sided coating can be carried out, the working efficiency is effectively improved, the energy consumption is reduced, and the pole piece after coating is scraped by the scraper, at the same time, the excess coating material can be scraped off, the consistency of the pole piece coating can be ensured, and the consistency of the lithium ion battery is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a first main perspective view of the lithium ion battery double-sided continuous coating equipment proposed in the present application.

[0022] Figure 2 It is a second main perspective view of the lithium ion battery double-sided continuous coating equipment proposed in the present application.

[0023] Figure 3 It is a sectional view of the lithium ion battery double-sided continuous coating equipment proposed in the present application.

[0024] Figure 4 It is a first partial perspective view of the lithium ion battery double-sided continuous coating equipment proposed in the present application.

[0025] Figure 5 It is a partial side view of the lithium ion battery double-sided continuous coating equipment proposed in the present application.

[0026] Figure 6 It is a second partial perspective view of the lithium ion battery double-sided continuous coating equipment proposed in the present application.

[0027] REFERENCE NUMERALS:

[0028] 1, side plate; 2, bottom plate; 3, first mounting block; 4, first driving motor; 5, first rotating shaft; 51, second rotating shaft; 6, first gear; 61, second gear; 7, third rotating shaft; 71, fourth rotating shaft; 8, third gear; 81, fourth gear; 9, synchronous belt; 10, synchronous wheel; 11, U-shaped frame; 12, second driving motor; 13, sliding plate; 14, sliding groove; 15, rotating rod; 16, driving rack; 17, driven gear; 18, fifth rotating shaft; 19, transmission roller; 20, discharging roller; 21, feeding roller; 22, mounting plate; 23, heating wire; 24, first accommodating groove; 25, second accommodating groove; 26, communicating chute; 27, water pump; 28, communicating pipe; 29, spray head; 30, lifting screw; 31, worm wheel; 32, worm; 33, hand screw head; 34, sliding block; 35, scraper; 36, anti-overflow plate. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0030] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection, can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative positional relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of the drawing, therefore, the orientation language used is to better and more clearly illustrate and understand the embodiments of the present application, and is not indicative or implied that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0031] In the embodiments of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features.

[0032] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0033] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" or "in other embodiments" or "in still other embodiments" or similar phrases in various places throughout this specification are not necessarily all referring to the same embodiment, unless otherwise specified. The terms "including," "comprising," "having," and variations thereof are meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0034] Embodiment 1

[0035] With reference to Figures 1-6 The application discloses a lithium ion battery double-sided continuous coating device, which comprises a bottom plate 2, two side plates 1 fixedly connected to the top of the bottom plate 2, a conveying part arranged between the two side plates 1 and used for driving the movement of a pole piece, the conveying part being used for bending the pole piece into two layers, two first mounting blocks 3 fixedly connected to the two side plates 1 and arranged at the lower sides of the two layers of pole pieces, two groups of coating mechanisms arranged in the two first mounting blocks 3 and used for coating the positive and negative poles of the pole piece, a group of swing mechanisms arranged at the side ends of the two first mounting blocks 3 and used for driving the two groups of coating mechanisms at the upper and lower sides to swing and coat, two scrapers 35 arranged at the upper sides of the two first mounting blocks 3 and used for scraping the coated pole piece and removing the excess coating material, two groups of adjusting mechanisms arranged in the two first mounting blocks 3 and used for adjusting the heights of the two scrapers 35, and a drying part arranged in the two side plates 1 and used for drying the pole piece after the positive and negative poles are coated.

[0036] The above technical scheme can bend the pole piece through the conveying part, so that the positive and negative poles can be aligned to the first mounting blocks 3 for coating, thereby realizing double-sided coating, effectively improving the work efficiency and reducing the energy consumption, and the scrapers can be used for scraping the coated pole piece and removing the excess coating material, so that the consistency of the pole piece coating can be ensured, and the consistency of the lithium ion battery is improved.

[0037] Embodiment 2

[0038] With reference to Figures 1-6The utility model provides a kind of lithium ion battery double-sided continuous coating equipment, including bottom plate 2, the top end both sides of bottom plate 2 are fixedly connected with side plate 1;Conveying part, conveying part is located between two side plates 1 to drive pole piece to move, conveying part is bent into double layer by pole piece;Two first mounting blocks 3, two first mounting blocks 3 are fixedly connected in two side plates 1, and two first mounting blocks 3 are respectively located in the downside of two layers of pole piece;Two groups of coating mechanism, two groups of coating mechanism are respectively located in two first mounting blocks 3 to coat the positive and negative pole of pole piece, and the side end of two first mounting blocks 3 is equipped with a group of swing mechanism, and two groups of swing mechanism respectively drive the swing coating of two groups of coating mechanism on the upside and downside;Two scrapers 35, two scrapers 35 are respectively located in the upside of two first mounting blocks 3 to scrape the pole piece after coating and scrape the excess coating raw material;Two groups of adjusting mechanism, two groups of adjusting mechanism are respectively located in two first mounting blocks 3 to adjust the height of two scrapers 35;Drying part, drying part is located in two side plates 1 to dry the pole piece after coating of positive and negative pole;

[0039] Further, the side end of two scrapers 35 is fixedly connected with anti-overflow plate 36, which can prevent the coating raw material scraped from the two sides of scraper 35 from flowing out;

[0040] The above technical solution can bend the pole piece by the conveying part, so that the positive and negative poles can be aligned for coating on the first mounting block 3, thereby enabling double-sided coating, effectively improving work efficiency and reducing energy consumption. The pole piece after coating can be scraped evenly by the scraper, and the excess coating raw material can be scraped off, which can ensure the consistency of the pole piece coating and improve the consistency of the lithium ion battery.

[0041] Reference Figures 1-4 The conveying part includes a transmission roller 19 rotatably connected between the two side plates 1, first, second, third, and fourth shafts 5, 51, 7, and 71 rotatably connected in the two side plates 1, discharge rollers 20 fixedly connected to the circumferential surfaces of the first and second shafts 5 and 51 for discharging, feed rollers 21 fixedly connected to the circumferential surfaces of the third and fourth shafts 7 and 71 for feeding, first and second gears 6 and 61 fixedly connected to the circumferential surfaces of the first and second shafts 5 and 51, respectively, third and fourth gears 8 and 81 fixedly connected to the circumferential surfaces of the third and fourth shafts 7 and 71, respectively, synchronous belts 9 fixedly connected to the circumferential surfaces of the second and third shafts 51 and 7, and a synchronous wheel 10 drivingly connected to the circumferential surfaces of the two synchronous belts 9. The side end of one of the side plates 1 is fixedly connected with a first driving motor 4, and the first driving motor 4 is engaged with the first shaft 5 through a shaft coupling.

[0042] The technical scheme has the following technical effects: the first driving motor 4 is started to drive the first rotating shaft 5 to rotate, the first rotating shaft 5 drives the first gear 6 to rotate, the first gear 6 drives the second gear 61 to rotate, the second gear 61 drives the second rotating shaft 51 to rotate, the first rotating shaft 5 and the second rotating shaft 51 drive the two discharging rollers 20 to rotate, thereby dragging the pole piece to discharge, the second rotating shaft 51 drives the synchronous belt 9 to rotate, the synchronous belt 9 drives the other synchronous belt 9 to rotate through the synchronous wheel 10, the synchronous belt 9 drives the third rotating shaft 7 to rotate, the third rotating shaft 7 drives the third gear 8 and the one feeding roller 21 to rotate, the third gear 8 drives the fourth gear 81 to rotate, the fourth gear 81 drives the fourth rotating shaft 71 to rotate, the fourth rotating shaft 71 drives the other feeding roller 21 to rotate, the two feeding rollers 21 rotate to drag the pole piece to feed, and the pole piece is turned into a U shape through the overturning of the two transmission rollers 19, so that the two first mounting blocks 3 are respectively located at the lower side of the positive pole and the negative pole of the pole piece.

[0043] With reference to Figure 3 and Figure 6 Each set of coating mechanisms comprises a first accommodating groove 24 formed in the first mounting block 3, the side end of the first mounting block 3 is fixedly connected with a water pump 27, the first mounting block 3 is rotatably connected with a fifth rotating shaft 18, the circumferential surface of the fifth rotating shaft 18 is fixedly connected with a communication pipe 28, the top end of the communication pipe 28 is fixedly connected with a plurality of spray heads 29, the water inlet pipe of the water pump 27 is in communication with the first accommodating groove 24, and the water outlet pipe of the water pump 27 is in communication with the communication pipe 28.

[0044] The technical scheme has the following technical effects: the water pump 27 is started to draw the coating raw material in the first accommodating groove 24 and convey the coating raw material into the communication pipe 28, the coating raw material is uniformly sprayed to the positive pole and the negative pole of the pole piece through the plurality of spray heads 29, the coating raw material is uniformly scraped and flattened through the scraper 35, the excess coating raw material can be scraped away from the positive pole and the negative pole of the pole piece, and the scraped coating raw material flows along the side end of the scraper 35 into the second accommodating groove 25.

[0045] With reference to Figure 1 and Figure 5 Each set of oscillating mechanisms comprises a driven gear 17 fixedly connected to the circumferential surface of the fifth rotating shaft 18, and the side end of the first mounting block 3 is slidingly connected with a driving rack 16 engaged with the driven gear 17.

[0046] The technical scheme has the following technical effects: the two fifth rotating shafts 18 reciprocatingly rotate, the two fifth rotating shafts 18 drive the two communication pipes 28 to reciprocatingly rotate through the two driven gears 17, thereby increasing the uniformity of coating.

[0047] With reference to Figure 1 and Figure 5One side end of one side plate 1 is fixedly connected with a U-shaped frame 11, a rotating rod 15 is rotatably connected in the U-shaped frame 11, a sliding plate 13 is fixedly connected between two driving racks 16, a sliding groove 14 is formed in the sliding plate 13, a sliding block 34 is slidably connected in the sliding groove 14, the sliding block 34 is fixedly connected to the side end of the rotating rod 15, the side end of the U-shaped frame 11 is fixedly connected with a second driving motor 12, and the second driving motor 12 is connected with the rotating rod 15 through a shaft coupling.

[0048] The above technical scheme can achieve the technical effect that the second driving motor 12 is started to drive the rotating rod 15 to rotate, the rotating rod 15 drives the sliding block 34 to perform circular motion, the sliding block 34 slides in the sliding groove 14 when performing circular motion, thereby driving the sliding plate 13 to perform relative reciprocating movement, and the sliding plate 13 drives the two driving racks 16 to perform reciprocating movement, and the two driving racks 16 respectively drive the two fifth rotating shafts 18 to perform reciprocating rotation.

[0049] Referring to Figure 3 Each adjusting mechanism comprises a second accommodating groove 25 formed in the first mounting block 3, a communication inclined groove 26 is formed in the first mounting block 3 and communicates the second accommodating groove 25 and the first accommodating groove 24, a lifting screw rod 30 is rotatably connected in the second accommodating groove 25, a scraper 35 is threadedly connected to the circumferential surface of the lifting screw rod 30, the lifting screw rod 30 is upwardly movable through the side end of the first mounting block 3 and extends upwardly, a worm wheel 31 is fixedly connected to the top end of the lifting screw rod 30, a worm gear 32 is rotatably connected in the first mounting block 3 and engages with the worm wheel 31, the worm gear 32 is outwardly movable through the side end of the first mounting block 3 and extends outwardly, and a hand screw rod head 33 is fixedly connected to the side end of the worm gear 32.

[0050] The above technical scheme can achieve the technical effect that the hand screw rod head 33 is twisted to drive the worm gear 32 to rotate, the worm gear 32 drives the worm wheel 31 to rotate, the worm wheel 31 drives the lifting screw rod 30 to rotate, and the lifting screw rod 30 drives the height of the scraper 35 to be adjusted, so that the height of the top end of the scraper 35 from the pole piece can be adjusted, and the coating thickness can be determined.

[0051] Referring to Figure 3 The drying mechanism comprises two mounting plates 22 fixedly connected in the two side plates 1, and heating wires 23 are arranged in the two mounting plates 22.

[0052] The above technical scheme can achieve the technical effect of quickly drying the pole piece.

[0053] A coating method of a lithium ion battery double-sided continuous coating device comprises the following steps:

[0054] S1, by starting the first drive motor 4 drive first shaft 5 rotation, first shaft 5 rotation drive first gear 6 rotation, first gear 6 rotation drive second gear 61 rotation, second gear 61 rotation drive second shaft 51 rotation, first shaft 5 and second shaft 51 drive two discharge roll 20 rotation, thereby drag pole for discharge, second shaft 51 rotation drive synchronous belt 9 rotation, synchronous belt 9 through the synchronous wheel 10 drive another synchronous belt 9 rotation, synchronous belt 9 rotation drive third shaft 7 rotation, third shaft 7 rotation drive third gear 8 and a feed roll 21 rotation, third gear 8 rotation drive fourth gear 81 rotation, fourth gear 81 rotation drive fourth shaft 71 rotation, fourth shaft 71 rotation drive another feed roll 21 rotation, two feed roll 21 rotation drag pole for feeding, and through the two transmission roll 19 overturn so that the pole is U-shaped, so that two first mounting block 3 is located at the positive and negative pole of the underside respectively;

[0055] S2, by starting the water pump 27 extraction first containing groove 24 in the coating raw materials, and delivered to the communication pipe 28, through a plurality of spray head 29 evenly sprayed to the positive and negative pole of the pole, and through the scraper 35 will be evenly coated raw materials scraped off the positive and negative pole of the pole, and the scraped off the coating raw materials along the side end of the scraper 35 flow to the second containing groove 25;

[0056] S3, by starting the second drive motor 12 drive the rotation of the rod 15, the rotation of the rod 15 drive the slider 34 circular motion, the slider 34 circular motion in the sliding slot 14 sliding, thereby driving the slide plate 13 reciprocating relative movement, the slide plate 13 drive two drive rack 16 reciprocating movement, two drive rack 16 respectively drive two fifth shaft 18 reciprocating rotation, two fifth shaft 18 respectively through two driven gear 17 drive two communication pipe 28 reciprocating rotation to increase the uniformity of the coating;

[0057] S4, after the positive and negative pole of the pole is coated, after two mounting plate 22, can be coated after the positive and negative pole of the pole drying.

[0058] However, as is well known to those skilled in the art, the working principle and wiring method of the first drive motor 4, the second drive motor 12 and the heating wire 23 are common, which belong to conventional means or common knowledge, and will not be described here. Those skilled in the art can make any selection according to their needs or convenience.

[0059] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application; the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A continuous double-sided coating device for lithium-ion batteries, characterized in that, include: The bottom plate (2) has side plates (1) fixedly connected to both sides of the top of the bottom plate (2); The conveying part is located between two side plates (1) to drive the electrode sheet to move. The conveying part bends the electrode sheet into a double layer. Two first mounting blocks (3) are fixedly connected to the two side plates (1), and the two first mounting blocks (3) are respectively located on the lower side of the two layers of electrode sheets; Two sets of coating mechanisms are respectively set in two first mounting blocks (3) to coat the positive and negative electrodes of the electrode sheet. Each of the two first mounting blocks (3) is provided with a swing mechanism on its side. The two sets of swing mechanisms drive the two sets of coating mechanisms on the upper and lower sides to swing and coat. Two scrapers (35) are respectively disposed on the upper side of the two first mounting blocks (3) to scrape the coated electrode sheet evenly and scrape off excess coating material; Two sets of adjustment mechanisms are respectively located in the two first mounting blocks (3) to adjust the height of the two scrapers (35); The drying section is located inside the two side plates (1) to dry the electrode sheets after the positive and negative electrodes have been coated. The conveying unit includes a transmission roller (19) rotatably connected between two side plates (1). A first rotating shaft (5), a second rotating shaft (51), a third rotating shaft (7), and a fourth rotating shaft (71) are rotatably connected within the two side plates (1). Discharge rollers (20) for discharging material are fixedly connected to the circumferential surfaces of the first rotating shaft (5) and the second rotating shaft (51). Feed rollers (21) for feeding material are fixedly connected to the circumferential surfaces of the third rotating shaft (7) and the fourth rotating shaft (71). The circumferential surfaces of the first rotating shaft (5) and the second rotating shaft (51) are respectively fixedly connected to… The first gear (6) and the second gear (61) mesh with each other. The third shaft (7) and the fourth shaft (71) are respectively fixedly connected to the circumferential surfaces of the third shaft (7) and the fourth shaft (81). The circumferential surfaces of the second shaft (51) and the third shaft (7) are both fixedly connected to the synchronous belts (9). The circumferential surfaces of the two synchronous belts (9) are connected to the synchronous pulleys (10). The side end of one of the side plates (1) is fixedly connected to the first drive motor (4). The first drive motor (4) meshes with the first shaft (5) through a coupling. Each of the coating mechanisms includes a first receiving groove (24) opened in the first mounting block (3), a water pump (27) is fixedly connected to the side end of the first mounting block (3), a fifth rotating shaft (18) is rotatably connected in the first mounting block (3), a connecting pipe (28) is fixedly connected to the circumferential surface of the fifth rotating shaft (18), a plurality of nozzles (29) are fixedly connected to the top end of the connecting pipe (28), the water inlet pipe of the water pump (27) is connected to the first receiving groove (24), and the water outlet pipe of the water pump (27) is connected to the connecting pipe (28). Each set of the swing mechanism includes a driven gear (17) fixedly connected to the circumferential surface of the fifth rotating shaft (18), and a drive rack (16) that meshes with the driven gear (17) is slidably connected to the side end of the first mounting block (3). A U-shaped frame (11) is fixedly connected to the side end of one of the side plates (1). A rotating rod (15) is rotatably connected inside the U-shaped frame (11). A sliding plate (13) is fixedly connected between the two drive racks (16). A sliding groove (14) is provided inside the sliding plate (13). A slider (34) is slidably connected inside the sliding groove (14). The slider (34) is fixedly connected to the side end of the rotating rod (15). A second drive motor (12) is fixedly connected to the side end of the U-shaped frame (11). The second drive motor (12) is connected to the rotating rod (15) through a coupling. Each set of adjustment mechanisms includes a second receiving groove (25) opened in the first mounting block (3). The first mounting block (3) has a connecting inclined groove (26) connecting the second receiving groove (25) and the first receiving groove (24). A lifting screw (30) is rotatably connected in the second receiving groove (25). The scraper (35) is threaded to the circumferential surface of the lifting screw (30). The lifting screw (30) moves upward through the side end of the first mounting block (3) and extends upward. A worm wheel (31) is fixedly connected to the top of the lifting screw (30). A worm (32) meshing with the worm wheel (31) is rotatably connected in the first mounting block (3). The worm (32) moves outward through the side end of the first mounting block (3) and extends outward. A hand-tightening screw head (33) is fixedly connected to the side end of the worm (32). The drying section includes two mounting plates (22) fixedly connected to two side plates (1), and each mounting plate (22) is provided with a heating wire (23).

2. The coating method of a lithium-ion battery double-sided continuous coating equipment as described in claim 1, characterized in that, Includes the following steps: S1. By starting the first drive motor (4), the first rotating shaft (5) is driven to rotate. The rotation of the first rotating shaft (5) drives the first gear (6) to rotate. The rotation of the first gear (6) drives the second gear (61) to rotate. The rotation of the second gear (61) drives the second rotating shaft (51) to rotate. The first rotating shaft (5) and the second rotating shaft (51) drive the two discharge rollers (20) to rotate, thereby dragging the electrode sheet to discharge. The rotation of the second rotating shaft (51) drives the synchronous belt (9) to rotate. The synchronous belt (9) drives another synchronous belt (9) to rotate through the synchronous pulley (10). 9) The rotation drives the third shaft (7) to rotate, the third shaft (7) rotates to drive the third gear (8) and a feeding roller (21) to rotate, the third gear (8) rotates to drive the fourth gear (81) to rotate, the fourth gear (81) rotates to drive the fourth shaft (71) to rotate, the fourth shaft (71) rotates to drive another feeding roller (21) to rotate, the two feeding rollers (21) rotate to drag the electrode sheet to feed, and the electrode sheet is U-shaped by the flipping of the two transmission rollers (19), so that the two first mounting blocks (3) are located on the lower side of the positive and negative poles of the electrode sheet respectively; S2. By starting the water pump (27), the coating material in the first receiving tank (24) is extracted and transported to the connecting pipe (28). It is then evenly sprayed onto the positive and negative poles of the electrode through multiple nozzles (29). The coating material is then evenly scraped flat by the scraper (35). At the same time, excess coating material is scraped away from the positive and negative poles of the electrode and the scraped coating material flows along the side of the scraper (35) into the second receiving tank (25). S3. By starting the second drive motor (12), the rotating rod (15) is driven to rotate. The rotating rod (15) drives the slider (34) to make circular motion. When the slider (34) makes circular motion, it slides in the groove (14), thereby driving the slide plate (13) to make reciprocating relative movement. The slide plate (13) drives the two drive racks (16) to make reciprocating movement. The two drive racks (16) drive the two fifth rotating shafts (18) to make reciprocating rotation respectively. The two fifth rotating shafts (18) drive the two connecting pipes (28) to make reciprocating rotation respectively through the two driven gears (17), thereby increasing the uniformity of coating. S4. After both the positive and negative electrodes are coated, they can be dried between the two mounting plates (22).

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