Lithium battery diaphragm coating device with adjustable coating thickness

Abstract

The utility model discloses a lithium battery diaphragm coating device with adjustable coating thickness, which relates to the technical field of lithium battery diaphragms and comprises a coating table in main components, the upper surfaces of two sides of the coating table are rotatably connected with telescopic mechanisms, and the front wall of the coating table is rotatably provided with an adjusting mechanism. The winding roller blocks on the two sides are driven by rotating the rotating blocks, the winding roller blocks move in the opposite directions through the first threaded rods, the extending blocks are pulled while the winding roller blocks move, then the fixing pieces are dismantled, the limiting disc on one side is dismantled, the lithium battery diaphragm cylinder core is arranged on the surface of the telescopic mechanism in a sleeving mode, and then installation can be completed through operation on the contrary. The diaphragms with different lengths are limited, the application range is widened, and the production cost is reduced; and secondly, a twisting block and a second threaded rod are rotated to link a turntable and a lantern ring, the lantern ring and a second gear are engaged with a first gear to rotate, and the first gear drives a scraper to rotate, so that the interval between the scraper and the diaphragm can be adjusted, and the coating thickness is accurately adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragms, in particular to a lithium battery diaphragm coating device with adjustable coating thickness. Background Art

[0002] In the structure of lithium batteries, the diaphragm is one of the key inner components. The performance of the diaphragm determines the interface structure and internal resistance of the battery, and directly affects the battery's capacity, cycle and safety performance. A diaphragm with excellent performance plays an important role in improving the overall performance of the battery. The main function of the diaphragm is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. The diaphragm material is non-conductive, and its physical and chemical properties have a great influence on the performance of the battery. Different types of batteries use different diaphragms. For example, in the lithium battery series, since the electrolyte is an organic solvent system, an organic solvent-resistant diaphragm material is required. Generally, a high-strength thin-film polyolefin porous membrane is used, and in the processing of lithium battery diaphragms, coating the lithium battery diaphragms is an indispensable link.

[0003] An existing patent (publication number: CN 212943736 U) discloses a lithium battery diaphragm coating device, which can keep a pressure roller against the upper surface of a lithium battery film through the elastic force of the spring itself, so that the lithium battery film between the two pressure rollers is in full contact with the coating roller, and can tension the film according to the thickness and toughness of the film to achieve a better coating effect. The torsion spring can keep the two scrapers in contact with the lithium battery film.

[0004] However, the above technical solution still has certain defects. First, the equipment has great limitations when processing diaphragms of different widths. Different rollers need to be replaced according to the width of the diaphragm, and the production cost is high. Secondly, the thickness of the diaphragm coating is affected by the distance between the scraper and the diaphragm. For different processing requirements (thickness), the scraper cannot stably adjust the distance with the diaphragm, and thus cannot adjust the thickness of the diaphragm coating. It has great limitations. For this reason, a lithium battery diaphragm coating device with adjustable coating thickness is proposed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a lithium battery separator coating device with adjustable coating thickness to solve the technical problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coating thickness adjustable lithium battery separator coating device, comprising a coating table as a main component, both upper surfaces of the coating table are rotatably connected with telescopic mechanisms, and the front wall of the coating table is rotatably provided with an adjustment mechanism;

[0007] The telescopic mechanism includes a rotating block, the axis of the rotating block is provided with a rotating shaft, the outer walls at both ends of the rotating shaft are threadedly connected with roller blocks, the sides of the roller blocks on both sides that are close to each other are slidably connected with extension blocks, a fixing rod is inserted on one side of the rotating shaft, a fixing plate is fixedly installed on the outer wall of one side of the coating table, and the outer walls of each group of the roller blocks and the extension blocks are fixedly connected with rubber anti-sliding blocks.

[0008] As a preferred technical solution of a lithium battery diaphragm coating device with adjustable coating thickness of the utility model, the outer wall of the rotating block is provided with a rubber anti-slip sleeve, the outer walls on both sides of the rotating block are fixedly connected to multiple groups of plug rods, the outer walls at both ends of the rotating shaft are fixedly connected to a first threaded rod, and the thread directions of the first threaded rods on both sides are opposite, and a thread groove is provided at the contact between the roller block and the rotating shaft.

[0009] As a preferred technical solution for a lithium battery diaphragm coating device with adjustable coating thickness of the utility model, a fixing hole is provided on the right axis of the first threaded rod on one side, the side outer wall of each group of the roller blocks is threadedly connected to a limiting disk, and a plurality of telescopic holes are provided on one side surface of each group of the roller blocks, and a plurality of plug holes are provided through the two side surfaces of the roller blocks.

[0010] As an optimal technical solution for a lithium battery diaphragm coating device with adjustable coating thickness of the utility model, a plurality of groups of telescopic blocks are equidistantly arranged on one side surface of the extension block, and each group of telescopic blocks is slidably connected to the inside of the telescopic hole, one side outer wall of each group of telescopic blocks is fixedly connected with a spring, and the other end of each group of springs is fixedly connected to the inner wall of the telescopic hole.

[0011] As an optimal technical solution for a lithium battery diaphragm coating device with adjustable coating thickness of the utility model, a fixing rod is inserted into the inside of the fixing hole, and the cross-sectional shapes of the fixing hole and the fixing rod are both rectangular. A bearing is sleeved on the outer wall of one side of the fixing rod, and the bearing is fixedly installed on the coating table.

[0012] As an optimal technical solution of a lithium battery diaphragm coating device with adjustable coating thickness of the utility model, the adjusting mechanism includes a scraper, one end of the scraper is fixedly connected to a rotating rod, the rotating rod is rotatably connected to the coating table, the outer wall of one end of the rotating rod is fixedly connected to a first gear, the outer wall of the coating table is rotatably connected to a turntable, the front end outer wall of the turntable is fixedly connected to a support plate, the outer wall of the support plate is rotatably connected to a first connecting block, the outer wall of the first connecting block is rotatably connected to one end of a second threaded rod, the other end of the second threaded rod is fixedly connected to a torsion block, the outer wall of the second threaded rod is threadedly connected to the second connecting block, the second connecting block is rotatably connected to the front end outer wall of the ring, the rear end outer wall of the ring is fixedly connected to a second gear, and the second gear is meshingly connected to the first gear, and the ring is rotatably connected to the turntable.

[0013] As a preferred technical solution of a lithium battery diaphragm coating device with adjustable coating thickness of the utility model, brackets are fixedly connected to the upper surfaces of both sides of the coating table, one group of brackets has an outer wall with an installation groove, one end axis of one group of telescopic mechanisms is fixedly connected to a motor, the four corners of the lower surface of the coating table are fixedly connected to supporting feet, and the upper surface of the coating table is fixedly connected to a coating box.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] The utility model drives the roller blocks on both sides by rotating the rotating block. The roller blocks use the first threaded rod to move in opposite directions. The extension block is pulled while the roller blocks move, and then the fixing plate is removed, the limit plate on one side is removed, and then the lithium battery diaphragm tube core is sleeved on the surface of the telescopic mechanism, and then the reverse operation is performed to complete the installation, thereby achieving the limitation of diaphragms of different lengths, improving the scope of application, and reducing production costs; secondly, the torsion block and the rotating second threaded rod are linked to the rotating disk and the ring, the ring and the second gear mesh with the first gear to rotate, and the first gear drives the scraper to rotate, so that the interval between the scraper and the diaphragm can be adjusted, and the thickness of the coating can be accurately adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a partial detailed diagram of the utility model;

[0018] Figure 3 This is an exploded diagram of the telescopic mechanism of the utility model;

[0019] Figure 4 This is an exploded view of the telescopic mechanism of the utility model;

[0020] Figure 5 This is an exploded view of the adjustment component of the utility model;

[0021] Figure 6 It is an exploded view of the adjustment component of the utility model.

[0022] In the figure: 100, main parts; 110, coating table; 111, bracket; 120, support foot; 130, motor; 140, coating box; 200, telescopic mechanism; 210, rotating block; 211, rubber anti-slip sleeve; 212, plug rod; 220, rotating shaft; 221, first threaded rod; 222, fixing hole; 230, winding roller block; 231, limiting plate; 232, telescopic hole; 233, plug hole; 240, extension block; 241, telescopic block; 242, spring; 250, fixed plate; 260, fixed rod; 261, bearing; 270, rubber anti-slip block; 300, adjustment mechanism; 310, scraper; 320, rotating rod; 330, first gear; 340, rotating disk; 341, supporting disk; 342, first connecting block; 350, second threaded rod; 351, torsion block; 360, collar; 361, second connecting block; 362, second gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] A lithium battery separator coating device with adjustable coating thickness, such as Figure 1-6 As shown, it includes a coating table 110 in a main component 100, and the upper surfaces of both sides of the coating table 110 are rotatably connected with a telescopic mechanism 200, and the front wall of the coating table 110 is rotatably provided with an adjustment mechanism 300;

[0026] The telescopic mechanism 200 includes a rotating block 210, the axis of the rotating block 210 is rotatably sleeved with a rotating shaft 220, the outer walls of both ends of the rotating shaft 220 are threadedly connected with roller blocks 230, the sides of the roller blocks 230 on both sides that are close to each other are slidably connected with extension blocks 240, a fixing rod 260 is inserted into one side of the rotating shaft 220, a fixing plate 250 is fixedly installed on the outer wall of one side of the coating table 110, and the outer walls of each group of roller blocks 230 and extension blocks 240 are fixedly connected with rubber anti-sliding blocks 270.

[0027] First, according to the length of the lithium battery diaphragm tube core to be processed, the rotating block 210 is rotated and adjusted to drive the roller blocks 230 on both sides. At this time, the roller blocks 230 on both sides use threaded rods to move in opposite directions. The roller blocks 230 on both sides move while pulling the extension block 240 to move. Then remove the fixing plate 250, remove the limit plate 231 on one side, and then put the lithium battery diaphragm tube core on the surface of the telescopic mechanism 200. Then, the reverse operation can complete the installation, thereby realizing the limitation of diaphragms of different lengths, improving the scope of application, and reducing production costs.

[0028] Please refer to Figure 3 , 4 The outer wall of the rotating block 210 is provided with a rubber anti-slip sleeve 211, and the outer walls on both sides of the rotating block 210 are fixedly connected to multiple groups of plug rods 212. The outer walls at both ends of the rotating shaft 220 are fixedly connected to the first threaded rods 221, and the thread directions of the first threaded rods 221 on both sides are opposite. A threaded groove is opened at the contact between the roller block 230 and the rotating shaft 220.

[0029] The outer wall of the rotating block 210 is provided with a rubber anti-slip sleeve 211 to increase the friction of the hand and prevent slipping. The outer walls on both sides of the rotating block 210 are fixedly connected to multiple groups of plug rods 212, which can cooperate with multiple groups of sockets 233 to drive the roller blocks 230 on both sides to rotate. The outer walls at both ends of the rotating shaft 220 are fixedly connected to the first threaded rod 221 to drive the roller blocks 230 on both sides.

[0030] Please refer to Figure 3 , 4 A fixing hole 222 is provided at the right axis of the first threaded rod 221 on one side, and the side outer wall of each group of roller blocks 230 is threadedly connected to a limiting disk 231. A plurality of telescopic holes 232 are provided on one side surface of each group of roller blocks 230, and a plurality of plug holes 233 are provided on both side surfaces of the roller blocks 230.

[0031] A fixing hole 222 is provided on the right axis of the first threaded rod 221 on one side, which can be quickly installed in conjunction with the fixing rod 260. The side outer wall of each set of roller blocks 230 is threadedly connected with a limiting disk 231 to limit the diaphragm and enhance stability. A plurality of telescopic holes 232 are provided on the surface of one side of each set of roller blocks 230 to cooperate with the telescopic block 241 for telescopic adjustment. A plurality of plug holes 233 are provided on the two side surfaces of the roller blocks 230 to insert the plug rod 212 for power transmission.

[0032] Please refer to Figure 3 , 4 A plurality of groups of telescopic blocks 241 are equidistantly arranged on one side surface of the extension block 240, and each group of telescopic blocks 241 is slidably connected to the inside of the telescopic hole 232, a spring 242 is fixedly connected to the outer wall of one side of each group of telescopic blocks 241, and the other end of each group of springs 242 is fixedly connected to the inner wall of the telescopic hole 232.

[0033] Each set of telescopic blocks 241 is slidably connected to the inside of the telescopic hole 232 to achieve telescopic adjustment, increase the contact area with the diaphragm tube core, and enhance stability. One side outer wall of each set of telescopic blocks 241 is fixedly connected with a spring 242 to push the extension block 240.

[0034] Please refer to Figure 3 , 4A fixing rod 260 is inserted into the fixing hole 222 , and the cross-sectional shapes of the fixing hole 222 and the fixing rod 260 are both rectangular. A bearing 261 is sleeved on the outer wall of one side of the fixing rod 260 , and the bearing 261 is fixedly installed on the coating station 110 .

[0035] A fixing rod 260 is inserted into the fixing hole 222 to cooperate with the fixing plate 250 to fix the telescopic mechanism 200. The cross-sectional shapes of the fixing hole 222 and the fixing rod 260 are both rectangular to enhance the stability of the fixation. A bearing 261 is sleeved on the outer wall of one side of the fixing rod 260 to ensure smooth rotation of the equipment.

[0036] Please refer to Figure 5 , 6 The adjustment mechanism 300 includes a scraper 310, one end of the scraper 310 is fixedly connected to a rotating rod 320, the rotating rod 320 is rotatably connected to the coating station 110, the outer wall of one end of the rotating rod 320 is fixedly connected to a first gear 330, the outer wall of the coating station 110 is rotatably connected to a turntable 340, the front end outer wall of the turntable 340 is fixedly connected to a support plate 341, the outer wall of the support plate 341 is rotatably connected to a first connecting block 342, the outer wall of the first connecting block 342 is rotatably connected to one end of a second threaded rod 350, the other end of the second threaded rod 350 is fixedly connected to a torsion block 351, the outer wall of the second threaded rod 350 is threadedly connected to a second connecting block 361, the second connecting block 361 is rotatably connected to the front end outer wall of a collar 360, the rear end outer wall of the collar 360 is fixedly connected to a second gear 362, and the second gear 362 is meshedly connected to the first gear 330, and the collar 360 is rotatably connected to the turntable 340.

[0037] The front end outer wall of the turntable 340 is fixedly connected to a support plate 341 to provide stable installation conditions for the ring 360. The other end of the second threaded rod 350 is fixedly connected to a torsion block 351 to facilitate the rotation of the second threaded rod 350. The outer wall of the second threaded rod 350 is threadedly connected to the second connecting block 361 to drive the ring 360. The second gear 362 is meshedly connected to the first gear 330 to transmit power.

[0038] Please refer to Figure 1 , 2 The upper surfaces of both sides of the coating table 110 are fixedly connected with brackets 111, and the outer walls of one group of brackets 111 are provided with mounting grooves. One end axis of one group of telescopic mechanisms 200 is fixedly connected with a motor 130. The four corners of the lower surface of the coating table 110 are fixedly connected with supporting legs 120, and the upper surface of the coating table 110 is fixedly connected with a coating box 140.

[0039] The upper surfaces of both sides of the coating table 110 are fixedly connected with brackets 111 to provide stable support for the telescopic mechanism 200. The outer walls of one group of brackets 111 are provided with installation grooves that can cooperate with the fixing plates 250 to fix the rotating shaft 220. The four corners of the lower surface of the coating table 110 are fixedly connected with support feet 120 to provide stable support for the equipment.

[0040] First, according to the length of the lithium battery diaphragm tube core to be processed, the rotating block 210 is rotated and adjusted to drive the roller blocks 230 on both sides. At this time, the roller blocks 230 on both sides use the threaded rod to move in opposite directions. The roller blocks 230 on both sides move while pulling the extension block 240 to move. Then remove the fixing plate 250, remove the limit plate 231 on one side, and then set the lithium battery diaphragm tube core on the surface of the telescopic mechanism 200. Then, the installation can be completed by the reverse operation, thereby realizing the limitation of diaphragms of different lengths, improving the scope of application, and reducing production costs; secondly, the first torsion block 351 and the rotating second threaded rod 350 are linked to the rotating disk 340 and the ring 360. At this time, the ring 360 and the second gear 362 engage the first gear 330 to rotate, and the first gear 330 drives the scraper 310 to rotate, so that the interval between the scraper 310 and the diaphragm can be adjusted to achieve precise adjustment of the coating thickness. The parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0041] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A coating thickness adjustable lithium battery separator coating device, comprising a coating station (110) in a main component (100), characterized in that: The upper surfaces of both sides of the coating table (110) are rotatably connected with telescopic mechanisms (200), and the front wall of the coating table (110) is rotatably provided with an adjustment mechanism (300); The telescopic mechanism (200) comprises a rotating block (210), the axis of the rotating block (210) is rotatably sleeved with a rotating shaft (220), the outer walls at both ends of the rotating shaft (220) are threadedly connected with roller blocks (230), the sides of the roller blocks (230) on both sides close to each other are slidably connected with extension blocks (240), a fixing rod (260) is inserted on one side of the rotating shaft (220), a fixing plate (250) is fixedly installed on the outer wall of one side of the coating table (110), and the outer walls of each group of the roller blocks (230) and the extension blocks (240) are fixedly connected with a rubber anti-sliding block (270).

2. The lithium battery separator coating device with adjustable coating thickness according to claim 1, characterized in that: The outer wall of the rotating block (210) is provided with a rubber anti-slip sleeve (211), the outer walls on both sides of the rotating block (210) are fixedly connected to a plurality of groups of plug rods (212), the outer walls at both ends of the rotating shaft (220) are fixedly connected to first threaded rods (221), and the thread directions of the first threaded rods (221) on both sides are opposite, and a thread groove is provided at the contact point between the roller block (230) and the rotating shaft (220).

3. The lithium battery separator coating device with adjustable coating thickness according to claim 2, characterized in that: A fixing hole (222) is provided at the right axis of the first threaded rod (221) on one side, the side outer wall of each group of the roller blocks (230) is threadedly connected to a limiting disk (231), a side surface of each group of the roller blocks (230) is provided with a plurality of telescopic holes (232), and a plurality of insertion holes (233) are provided through the two side surfaces of the roller blocks (230).

4. The lithium battery separator coating device with adjustable coating thickness according to claim 1, characterized in that: A plurality of groups of telescopic blocks (241) are equidistantly arranged on one side surface of the extension block (240), and each group of telescopic blocks (241) is slidably connected to the inside of the telescopic hole (232), a spring (242) is fixedly connected to an outer wall of one side of each group of telescopic blocks (241), and the other end of each group of springs (242) is fixedly connected to the inner wall of the telescopic hole (232).

5. The lithium battery separator coating device with adjustable coating thickness according to claim 3, characterized in that: A fixing rod (260) is inserted into the fixing hole (222), and the cross-sectional shapes of the fixing hole (222) and the fixing rod (260) are both rectangular. A bearing (261) is sleeved on an outer wall of one side of the fixing rod (260), and the bearing (261) is fixedly mounted on the coating table (110).

6. The lithium battery separator coating device with adjustable coating thickness according to claim 1, characterized in that: The adjustment mechanism (300) comprises a scraper (310), one end of the scraper (310) is fixedly connected to a rotating rod (320), the rotating rod (320) is rotatably connected to a coating platform (110), an outer wall of one end of the rotating rod (320) is fixedly connected to a first gear (330), the outer wall of the coating platform (110) is rotatably connected to a rotating disk (340), the front end outer wall of the rotating disk (340) is fixedly connected to a supporting disk (341), the outer wall of the supporting disk (341) is rotatably connected to a first connecting block (342), and the first connecting block (34 2) is rotatably connected to one end of a second threaded rod (350), the other end of the second threaded rod (350) is fixedly connected to a torsion block (351), the outer wall of the second threaded rod (350) is threadedly connected to a second connecting block (361), the second connecting block (361) is rotatably connected to the front end outer wall of the collar (360), the rear end outer wall of the collar (360) is fixedly connected to a second gear (362), and the second gear (362) is meshedly connected to the first gear (330), and the collar (360) is rotatably connected to the turntable (340).

7. The lithium battery separator coating device with adjustable coating thickness according to claim 1, characterized in that: The upper surfaces of both sides of the coating table (110) are fixedly connected to brackets (111), the outer walls of one set of brackets (111) are provided with mounting grooves, one end of one set of telescopic mechanisms (200) is fixedly connected to a motor (130) at its axis, the four corners of the lower surface of the coating table (110) are fixedly connected to supporting feet (120), and the upper surface of the coating table (110) is fixedly connected to a coating box (140).

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