Battery coating machine

Abstract

The utility model discloses a battery coating machine which comprises a support, a first slurry pulling assembly and a second slurry pulling assembly, the first slurry pulling assembly comprises a first shell, a coating roller, a first guide roller and a second guide roller, and the first shell is provided with a first containing groove used for containing slurry. The coating roller is contained in the first containing groove and located between the first guide roller and the second guide roller, the second slurry pulling assembly is located on the side, away from the first guide roller, of the second guide roller and comprises a second shell and a roller, and the second shell is provided with a second containing groove used for containing slurry. The roller is rotatably arranged at the opening of the second accommodating groove, and a plurality of discharging holes communicated with the second accommodating groove are formed in the peripheral wall of the roller, so that the two sides of the pole piece in the thickness direction can be continuously coated with slurry, the double-sided coating mode of the pole piece is realized without overturning the pole piece, and the coating efficiency of the pole piece can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery coating machine technology, and in particular to a battery coating machine. Background Technology

[0002] Applying slurry to the electrode plates is a crucial step in battery production. To improve battery energy density, slurry is typically applied to both sides of the electrode. However, the process of applying slurry to one side of the electrode requires removing and flipping it to apply slurry to the other side. This complex operation results in low coating efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery coating machine that can improve the coating efficiency of electrode sheets.

[0004] A battery coating machine according to an embodiment of the present invention includes:

[0005] support;

[0006] A first slurry-pulling assembly is disposed on the bracket. The first slurry-pulling assembly includes a first housing, a coating roller, a first guide roller, and a second guide roller. The first housing is provided with a first receiving groove for receiving slurry. The first guide roller and the second guide roller are both disposed at the opening of the first receiving groove. The coating roller is housed in the first receiving groove and is located between the first guide roller and the second guide roller.

[0007] The second slurry pulling assembly is disposed on the bracket. The second slurry pulling assembly is located on the side of the second guide roller away from the first guide roller. The second slurry pulling assembly includes a second housing and a roller. The second housing is provided with a second receiving groove for receiving slurry. The roller is rotatably disposed at the opening of the second receiving groove. The peripheral wall of the roller is provided with a plurality of discharge holes communicating with the second receiving groove.

[0008] The electrode sheet is sequentially wound around the first guide roller, the coating roller, the second guide roller, and the drum. The coating roller is used to make the side of the electrode sheet away from the coating roller contact the slurry in the first receiving tank. The drum is used to make the side of the electrode sheet close to the drum contact the slurry in the drum.

[0009] The battery coating machine according to the embodiments of this utility model has at least the following beneficial effects:

[0010] Along the vertical direction, both the first guide roller and the second guide roller are higher than the coating roller. When the battery coating machine is working, the electrode sheet is sequentially wound around the first guide roller, the coating roller, the second guide roller, and the roller. The surface of the electrode sheet connected to the coating roller is the upper surface, and the surface of the electrode sheet away from the coating roller is the lower surface. When the electrode sheet moves, the lower surface of the electrode sheet contacts the slurry in the first receiving tank, and the upper surface of the electrode sheet contacts the slurry flowing out from the discharge hole. The slurry can be continuously coated on the upper and lower surfaces of the electrode sheet. The double-sided coating of the electrode sheet can be achieved without flipping the electrode sheet, which can improve the coating efficiency of the electrode sheet.

[0011] According to some embodiments of the present invention, a first drying component is provided between the first slurry pulling component and the second slurry pulling component.

[0012] According to some embodiments of the present invention, the first drying assembly includes first drying ovens arranged opposite each other in the vertical direction, and a first clearance channel for avoiding the electrode sheet is defined between the opposing first drying ovens. The first drying oven is provided with a first heating assembly, and a plurality of first heat dissipation holes are provided on the side of the first drying oven facing the opposite side.

[0013] According to some embodiments of the present invention, the battery coating machine further includes a winding assembly for winding the electrode sheet. The winding assembly is disposed on the bracket. A third guide roller and a fourth guide roller are provided at the opening of the second receiving groove. The third guide roller is located between the drum and the second guide roller. The fourth guide roller is located on the side of the drum away from the third guide roller. The winding assembly is located on the side of the fourth guide roller away from the drum.

[0014] According to some embodiments of the present invention, the winding assembly includes a winding frame, a fifth guide roller, and a winding roller. The winding frame is disposed on the support frame. The fifth guide roller and the winding roller are rotatably disposed on the winding frame. The fifth guide roller is located between the winding roller and the fourth guide roller. The winding roller is used to wind up the electrode sheet.

[0015] According to some embodiments of the present invention, a second drying component is provided between the winding component and the fourth guide roller.

[0016] According to some embodiments of the present invention, the second drying assembly includes a second drying oven arranged opposite each other in the vertical direction, a second avoidance channel for avoiding the electrode sheet is defined between the opposing second drying ovens, a second heating assembly is provided inside the second drying oven, and a plurality of second heat dissipation holes are provided on the side of the second drying oven facing the opposite side.

[0017] According to some embodiments of the present invention, the first housing includes a peripheral wall plate, a bottom plate, and a pusher plate. The bottom plate is disposed at the bottom of the peripheral wall plate. The first guide roller, the second guide roller, and the coating roller are all disposed on the peripheral wall plate. The pusher plate is disposed inside the peripheral wall plate and can slide in a direction close to or away from the coating roller. The peripheral wall plate, the bottom plate, and the pusher plate surround and form the first receiving groove. The pusher plate is sealed and abuts against the opposite sides of the peripheral wall plate, and the pusher plate is sealed and abuts against the bottom plate.

[0018] According to some embodiments of the present invention, the pusher plate is connected to a driving member, which is used to drive the pusher plate to slide.

[0019] According to some embodiments of the present invention, a liquid level detection sensor is provided in the first receiving tank, the liquid level detection sensor is electrically connected to the driving component, and the liquid level detection sensor is used to detect the liquid level height in the first receiving tank.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the battery coating machine according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the battery coating machine according to an embodiment of the present invention.

[0024] Figure label:

[0025] 100 brackets

[0026] The components include: a first receiving tank 201, a first housing 210, a peripheral wall plate 211, a bottom plate 212, a pusher plate 213, a coating roller 220, a first guide roller 230, a second guide roller 240, and a driving component 250.

[0027] The components include a second receiving tank 301, a second housing 310, a roller 320, a discharge hole 321, a third guide roller 330, and a fourth guide roller 340.

[0028] First drying component 400, first drying oven 410, first heat dissipation channel 411, first heat dissipation hole 412, first heating component 420;

[0029] 500 winding assembly, 510 winding bracket, 520 fifth guide roller, and 530 winding roller;

[0030] The second drying component 600, the second drying oven 610, the second heat dissipation channel 611, the second heat dissipation hole 612, and the second heating component 620;

[0031] Electrode 700. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figure 1 , Figure 2According to an embodiment of the present invention, a battery coating machine includes a support 100, a first slurry-pulling assembly, and a second slurry-pulling assembly. The first slurry-pulling assembly is disposed on the support 100 and includes a first housing 210, a coating roller 220, a first guide roller 230, and a second guide roller 240. The first housing 210 has a first receiving groove 201 for receiving slurry. The first guide roller 230 and the second guide roller 240 are both disposed at the opening of the first receiving groove 201. The coating roller 220 is housed in the first receiving groove 201 and located between the first guide roller 230 and the second guide roller 240. The second slurry-pulling assembly is disposed on the support 100 and is located on the side of the second guide roller 240 away from the first guide roller 230. The second slurry-pulling assembly includes a second housing 310 and a roller 320. 310 is provided with a second receiving groove 301 for receiving slurry. A roller 320 is rotatably disposed at the opening of the second receiving groove 301. The peripheral wall of the roller 320 is provided with a plurality of discharge holes 321 communicating with the second receiving groove 301. The electrode 700 is sequentially wound around the first guide roller 230, the coating roller 220, the second guide roller 240 and the roller 320. The coating roller 220 is used to make the side of the electrode 700 away from the coating roller 220 contact the slurry in the first receiving groove 201. The roller 320 is used to make the side of the electrode 700 close to the roller 320 contact the slurry in the roller 320. In this way, when the slurry is drawn, the slurry can be continuously coated on both sides of the electrode 700 in the thickness direction. It is not necessary to flip the electrode 700 to achieve double-sided coating of the electrode 700, which can improve the coating efficiency of the electrode 700.

[0037] Specifically, along the vertical direction, the first guide roller 230 and the second guide roller 240 are both higher than the coating roller 220. When the battery coating machine is working, the electrode 700 is sequentially wound around the first guide roller 230, the coating roller 220, the second guide roller 240, and the roller 320. The surface of the electrode 700 connected to the coating roller 220 is the upper surface, and the surface of the electrode 700 away from the coating roller 220 is the lower surface. When the electrode 700 moves, the lower surface of the electrode 700 contacts the slurry in the first receiving tank 201, and the upper surface of the electrode 700 contacts the slurry flowing out from the discharge hole 321. This allows for continuous coating of the upper and lower surfaces of the electrode 700 with slurry, eliminating the need to flip the electrode 700 to achieve double-sided coating, thus improving the coating efficiency of the electrode 700.

[0038] In some embodiments of this utility model, a first drying component 400 is provided between the first slurry drawing component and the second slurry drawing component. After the slurry drawing is completed on the lower surface of the electrode 700, the slurry can be dried to accelerate the drying speed of the slurry of the electrode 700 and improve the production quality of the electrode 700.

[0039] In some embodiments of this utility model, the first drying assembly 400 includes first drying ovens 410 arranged opposite each other in the vertical direction. A first clearance channel for avoiding the electrode 700 is defined between the opposing first drying ovens 410. A first heating assembly 420 is provided inside the first drying oven 410. A plurality of first heat dissipation holes 412 are provided on the side of the first drying oven 410 facing the opposite side. After the slurry is drawn on the lower surface of the electrode 700, the slurry can be dried to accelerate the drying speed of the slurry of the electrode 700 and improve the production quality of the electrode 700.

[0040] Specifically, the portion of the electrode 700 located between the first and second slurry-drawing assemblies passes through the first clearance channel. Heat from the first oven 410 is dissipated into the first clearance channel through heat dissipation holes. The upper first oven 410 dries the upper surface of the electrode 700, so that the second slurry-drawing assembly can apply slurry to the upper surface of the electrode 700. The lower first oven 410 dries the lower surface of the electrode 700. After the slurry-drawing is completed on the lower surface of the electrode 700, the slurry can be dried to accelerate the drying speed of the slurry in the electrode 700 and improve the production quality of the electrode 700.

[0041] It should be noted that the multiple first heat dissipation holes 412 are arranged in an array at intervals, which makes the air outlet of the first oven 410 uniform and can improve the production quality of the electrode 700. No restrictions are imposed here.

[0042] It should be noted that the first heating component 420 is a heating element or other heating component, and there are no restrictions on its use.

[0043] As another implementation, the first drying assembly 400 can also dry the electrode 700 with hot air, which is not limited here.

[0044] In some embodiments of this utility model, the battery coating machine further includes a winding assembly 500 for winding up the electrode sheet 700. The winding assembly 500 is disposed on the bracket 100. A third guide roller 330 and a fourth guide roller 340 are provided at the opening of the second receiving groove 301. The third guide roller 330 is located between the roller 320 and the second guide roller 240, and the fourth guide roller 340 is located on the side of the roller 320 away from the third guide roller 330. The winding assembly 500 is located on the side of the fourth guide roller 340 away from the roller 320, which facilitates the winding up of the double-sided coated electrode sheet 700.

[0045] Specifically, the electrode 700 is sequentially wound around the first guide roller 230, the coating roller 220, the second guide roller 240, the third guide roller 330, the roller 320 and the fourth guide roller 340. After passing the fourth guide roller 340, the electrode 700 is wound up by the winding assembly 500, which facilitates the winding up of the double-sided coated electrode 700.

[0046] In some embodiments of this utility model, the winding assembly 500 includes a winding frame, a fifth guide roller 520, and a winding roller 530. The winding frame is mounted on the support 100. The fifth guide roller 520 and the winding roller 530 are rotatably mounted on the winding frame. The fifth guide roller 520 is located between the winding roller 530 and the fourth guide roller 340. The winding roller 530 is used to wind up the electrode sheet 700, which facilitates the winding of the double-sided coated electrode sheet 700.

[0047] Specifically, the electrode 700 is sequentially wound around the first guide roller 230, the coating roller 220, the second guide roller 240, the third guide roller 330, the roller 320, the fourth guide roller 340, the fifth guide roller 520, and the take-up roller 530. Under the action of the fifth guide roller 520, the electrode 700 is wound up by the take-up roller 530, which facilitates the winding up of the double-sided coated electrode 700.

[0048] It should be noted that the take-up roller 530 is detachably connected to the take-up frame, which makes it easy to remove the finished electrode sheet 700.

[0049] In some embodiments of this utility model, a second drying component 600 is provided between the winding component 500 and the fourth guide roller 340. After the slurry is drawn on the upper surface of the electrode 700, the slurry can be dried to accelerate the drying speed of the slurry of the electrode 700 and improve the production quality of the electrode 700.

[0050] In some embodiments of this utility model, the second drying assembly 600 includes a second drying oven 610 arranged opposite each other in the vertical direction. A second clearance channel for avoiding the electrode 700 is defined between the opposing second drying ovens 610. A second heating assembly 620 is provided inside the second drying oven 610. A plurality of second heat dissipation holes 612 are provided on the side of the second drying oven 610 facing the opposite side. After the slurry is drawn on the upper surface of the electrode 700, the slurry can be dried to accelerate the drying speed of the slurry of the electrode 700 and improve the production quality of the electrode 700.

[0051] Specifically, the portion of the electrode 700 located between the second slurry drawing assembly and the winding assembly 500 passes through the second clearance channel. Heat from the second oven 610 is dissipated into the second clearance channel through heat dissipation holes. The upper second oven 610 dries the upper surface of the electrode 700 so that the second slurry drawing assembly can apply slurry to the upper surface of the electrode 700. The lower second oven 610 dries the lower surface of the electrode 700. After the slurry drawing is completed on the upper surface of the electrode 700, the slurry can be dried to accelerate the drying speed of the slurry in the electrode 700 and improve the production quality of the electrode 700.

[0052] It should be noted that the multiple first heat dissipation holes 412 are arranged in an array at intervals, which makes the air outlet of the first oven 410 uniform and can improve the production quality of the electrode 700. No restrictions are imposed here.

[0053] It should be noted that the first heating component 420 is a heating element or other heating component, and there are no restrictions on its use.

[0054] As another implementation, the first drying assembly 400 can also dry the electrode 700 with hot air, which is not limited here.

[0055] In some embodiments of this utility model, the first housing 210 includes a peripheral wall plate 211, a bottom plate 212, and a pusher plate 213. The bottom plate 212 is disposed at the bottom of the peripheral wall plate 211. The first guide roller 230, the second guide roller 240, and the coating roller 220 are all disposed on the peripheral wall plate 211. The pusher plate 213 is disposed inside the peripheral wall plate 211 and can slide in a direction close to or away from the coating roller 220. The peripheral wall plate 211, the bottom plate 212, and the pusher plate 213 enclose to form a first receiving groove 201. The pusher plate 213 is sealed and abutted against the opposite sides of the peripheral wall plate 211, and the pusher plate 213 is sealed and abutted against the bottom plate 212. This can change the volume of the first receiving groove 201 so that the slurry in the first receiving groove 201 only contacts the lower surface of the electrode 700, which can ensure that the lower surface of the electrode 700 is coated evenly, thereby improving the production quality of the electrode 700.

[0056] Specifically, the peripheral wall plate 211 has a rectangular cross-section. The bottom of the pusher plate 213 is sealed against the bottom plate 212. One end of the pusher plate 213 is sealed against one side of the inner peripheral surface of the peripheral wall plate 211, and the other end of the pusher plate 213 is sealed against the opposite side of the inner peripheral surface of the peripheral wall plate 211. The pusher plate 213, the bottom plate 212, and the corresponding parts of the inner peripheral surface of the peripheral wall plate 211 enclose and form the first receiving groove 201. Since the position of the coating roller 220 is fixed, when the electrode 700 moves during the coating process, the slurry in the first receiving groove 201 gradually decreases. By sliding the pusher plate 213, the volume of the first receiving groove 201 is reduced accordingly, so that the liquid level of the slurry in the first receiving groove 201 remains constant. This ensures that the lower surface of the electrode 700 is coated evenly, thereby improving the production quality of the electrode 700.

[0057] In some embodiments of this utility model, the pusher plate 213 is connected to a drive member 250, which is used to drive the pusher plate 213 to slide, and can automatically push the pusher plate 213 to slide, so as to facilitate operation.

[0058] In some embodiments of this utility model, a liquid level detection sensor (not shown in the figure) is provided in the first receiving tank 201. The liquid level detection sensor is electrically connected to the driving component 250. The liquid level detection sensor is used to detect the liquid level height in the first receiving tank 201 to ensure that the slurry in the first receiving tank 201 can contact the lower surface of the electrode 700 and ensure that the electrode 700 is coated evenly.

[0059] It should be noted that the liquid level detection sensor can be a photoelectric liquid level sensor or a capacitive liquid level sensor, and there is no limitation here.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A battery coating machine for coating electrode sheets (700), characterized in that, include: Bracket (100); A first slurry-pulling assembly is disposed on the bracket (100). The first slurry-pulling assembly includes a first housing (210), a coating roller (220), a first guide roller (230), and a second guide roller (240). The first housing (210) is provided with a first receiving groove (201) for receiving slurry. The first guide roller (230) and the second guide roller (240) are both disposed at the opening of the first receiving groove (201). The coating roller (220) is accommodated in the first receiving groove (201) and is located between the first guide roller (230) and the second guide roller (240). The second slurry pulling assembly is disposed on the bracket (100). The second slurry pulling assembly is located on the side of the second guide roller (240) away from the first guide roller (230). The second slurry pulling assembly includes a second housing (310) and a roller (320). The second housing (310) is provided with a second receiving groove (301) for receiving slurry. The roller (320) is rotatably disposed at the opening of the second receiving groove (301). The peripheral wall of the roller (320) is provided with a plurality of discharge holes (321) communicating with the second receiving groove (301). The electrode (700) is sequentially wound around the first guide roller (230), the coating roller (220), the second guide roller (240), and the roller (320). The coating roller (220) is used to make the side of the electrode (700) away from the coating roller (220) contact the slurry in the first receiving tank (201). The roller (320) is used to make the side of the electrode (700) close to the roller (320) contact the slurry in the roller (320).

2. The battery coating machine according to claim 1, characterized in that, A first drying component (400) is provided between the first slurry pulling component and the second slurry pulling component.

3. The battery coating machine according to claim 2, characterized in that, The first drying assembly (400) includes a first oven (410) arranged opposite each other in the vertical direction, and a first clearance channel is defined between the opposing first ovens (410) for avoiding the electrode (700). The first oven (410) is provided with a first heating assembly (420), and a plurality of first heat dissipation holes (412) are provided on the side of the first oven (410) facing the opposite side of the first oven (410).

4. The battery coating machine according to claim 1, characterized in that, The battery coating machine further includes a winding assembly (500) for winding the electrode sheet (700). The winding assembly (500) is disposed on the bracket (100). A third guide roller (330) and a fourth guide roller (340) are provided at the opening of the second receiving groove (301). The third guide roller (330) is located between the roller (320) and the second guide roller (240). The fourth guide roller (340) is located on the side of the roller (320) away from the third guide roller (330). The winding assembly (500) is located on the side of the fourth guide roller (340) away from the roller (320).

5. The battery coating machine according to claim 4, characterized in that, The winding assembly (500) includes a winding frame, a fifth guide roller (520), and a winding roller (530). The winding frame is disposed on the support (100). The fifth guide roller (520) and the winding roller (530) are rotatably disposed on the winding frame. The fifth guide roller (520) is located between the winding roller (530) and the fourth guide roller (340). The winding roller (530) is used to wind up the electrode sheet (700).

6. The battery coating machine according to claim 4, characterized in that, A second drying assembly (600) is provided between the winding assembly (500) and the fourth guide roller (340).

7. The battery coating machine according to claim 6, characterized in that, The second drying assembly (600) includes a second oven (610) arranged opposite each other in the vertical direction, and a second clearance channel is defined between the opposing second ovens (610) for avoiding the electrode (700). A second heating assembly (620) is provided inside the second oven (610), and a plurality of second heat dissipation holes (612) are provided on the side of the second oven (610) facing the opposite side of the second oven (610).

8. The battery coating machine according to claim 1, characterized in that, The first housing (210) includes a peripheral wall plate (211), a bottom plate (212), and a pusher plate (213). The bottom plate (212) is located at the bottom of the peripheral wall plate (211). The first guide roller (230), the second guide roller (240), and the coating roller (220) are all located on the peripheral wall plate (211). The pusher plate (213) is located inside the peripheral wall plate (211) and can slide in a direction close to or away from the coating roller (220). The peripheral wall plate (211), the bottom plate (212), and the pusher plate (213) enclose and form the first receiving groove (201). The pusher plate (213) is sealed and abuts against the opposite sides of the peripheral wall plate (211), and the pusher plate (213) is sealed and abuts against the bottom plate (212).

9. The battery coating machine according to claim 8, characterized in that, The pusher plate (213) is connected to a drive member (250), which is used to drive the pusher plate (213) to slide.

10. The battery coating machine according to claim 9, characterized in that, The first container (201) is equipped with a liquid level detection sensor, which is electrically connected to the drive (250) and is used to detect the liquid level height in the first container (201).

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