Slurry hanging and scraping structure for battery piece slurry hanging equipment

Abstract

The utility model discloses a slurry coating and scraping structure for battery piece slurry coating equipment, which comprises a mounting plate mounted in a slurry coating barrel, a mounting groove arranged on the mounting plate, two scrapers oppositely arranged in the mounting groove, a fixing device arranged above the scrapers, and a slurry scraping gap arranged between the two scrapers. An adjusting device is arranged on one side of the scraper and used for adjusting the width of the gap; an opening is further formed in the position, corresponding to the slurry scraping gap, of the mounting plate, and a material returning device is further arranged below the position, corresponding to the opening, of the mounting plate and used for recycling redundant slurry into the slurry hanging barrel. The scraper is arranged in the slurry hanging barrel and is closer to the liquid level of slurry, the falling path of the slurry is shorter, the influence of the external air temperature on the falling slurry can be reduced, meanwhile, the scraper adopts the split design, when the scraper is abraded, the positioning of the scraper can be relieved only by rotating the fixing device, and the operation is convenient. Therefore, the scraper is replaced independently, the mounting plate does not need to be detached, and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a slurry coating and scraping structure for battery sheet slurry coating equipment. Background Art

[0002] As an emerging and promising alternative energy storage technology, zinc-ion batteries have attracted much attention due to their abundant natural resources, inherent safety and cost-effectiveness. An important step in the production process of zinc-ion batteries is the production of negative electrodes, which requires coating a layer of active material in the form of slurry on the battery cells. This step is also called the slurry coating operation, in which the performance of the active material and the coating quality will have a great impact on the performance of the battery. For example, the utility model patent "Ni-MH battery positive and negative electrode stirring slurry bucket" with the publication number "CN209848717U" is designed for the battery cell slurry coating operation. The battery cell enters the slurry hopper filled with slurry through the guide shaft, so that the active material is coated on the battery cell. The battery cell with active material passes through the slurry roller through the scraper outside the slurry hopper, and the scraper scrapes the slurry bonded to the battery cell flat. Finally, the battery cell passes through the vertical drying system to form the battery negative electrode.

[0003] Since the existing scraper plate is usually set outside the slurry barrel, the excess slurry is easily affected by the ambient temperature and becomes dry when it returns to the slurry bucket after being scraped off by the scraper, making it difficult to remix. In addition, since the battery cells are slurried vertically upward, the excess slurry will adhere to the battery cells at the lower end when it falls, which increases the difficulty of subsequent scraping of the battery cells. At the same time, the scraper will show different degrees of wear after being used for a period of time, so the scraper needs to be replaced regularly. However, the existing scrapers are all integrated in design and need to be replaced together with the mounting frame, which also increases the use cost of the slurry coating process. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and provide a slurry scraping structure for battery cell slurry coating equipment to solve the defects of the existing slurry scraping structure.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A slurry coating and scraping structure for battery cell slurry coating equipment, comprising a mounting plate mounted on a slurry coating barrel, wherein the mounting plate is flush with the upper surface of the slurry coating barrel, and the mounting plate is recessed inward to form a mounting groove, wherein two scrapers are arranged opposite to each other in the mounting groove, and a fixing device is arranged above the scraper for positioning the scraper; a slurry coating gap is arranged between the two scrapers, and an adjustment device is arranged on one side of the scraper for adjusting the gap width between the two scrapers; an opening for the battery cell to pass through is also provided on the mounting plate at a position corresponding to the slurry coating gap, and a material return device is also arranged at a position below the mounting plate corresponding to the opening for recovering excess slurry in the slurry coating barrel.

[0007] As a preferred solution for the slurry scraping structure of the battery cell slurry coating equipment, the two ends of the upper surface of the mounting plate extend outward to form a first support plate, and the first support plate is detachably mounted on the upper surface of the slurry coating barrel, and the end of the mounting plate and the first support plate form an L-shaped structure, so that the mounting groove is located inside the slurry coating barrel.

[0008] As a preferred solution for the slurry scraping structure of the battery cell slurry coating equipment, a plurality of first push rods are installed at intervals on the first support plate, a first rotating handle is installed at one end of the first push rod, and the other end passes through the first support plate and is threadedly connected to the upper surface of the slurry coating barrel.

[0009] As a preferred solution for the slurry coating and scraping structure of the battery cell slurry coating equipment, the adjusting device includes a plurality of guide rails spaced apart along the length direction of the mounting groove, each of the guide rails is slidably connected to two sliders, the two scrapers are respectively connected to the two sliders on each guide rail in a one-to-one correspondence, and a sliding rod is slidably connected between the two scrapers, a spring is mounted on the sliding rod, and when the spring is in an initial state, the gap width between the two scrapers is at its maximum.

[0010] As a preferred solution for the slurry coating and scraping structure of the battery cell slurry coating equipment, the adjustment device also includes a plurality of second push rods installed at intervals on one side of the mounting plate, one end of the second push rod is provided with a second rotating handle, and the other end passes through the mounting plate and abuts against the side of one of the scrapers to adjust the gap width between the two scrapers.

[0011] As a preferred solution for the slurry coating and scraping structure of the battery cell slurry coating equipment, the fixing device includes a second support plate arranged at intervals on the mounting plate, and two third push rods are installed at the positions of the second support plate corresponding to the two scrapers. A third rotating handle is installed at one end of the third push rod, and the other end passes through the second support plate and abuts against the top surface of the scraper.

[0012] As a preferred solution for the slurry scraping structure of the battery cell slurry coating equipment, the return device includes two mounting frames arranged at intervals below the mounting plate, and a return hopper is arranged between the two mounting frames at the opening corresponding to the mounting plate. The upper end of the return hopper is inclined downward to facilitate the recovery of excess slurry into the slurry coating barrel.

[0013] As a preferred solution for the slurry scraping structure of the battery cell slurry coating equipment, a slurry coating roller is rotatably arranged below the mounting frame, and the slurry coating roller is close to the bottom of the inner wall of the slurry coating barrel.

[0014] As a preferred solution of the pulp coating and scraping structure for the battery cell pulp coating equipment, the pulp coating roller is provided with a plurality of limiting grooves at intervals along its length direction, and the width of the limiting grooves is the same as the width of a single battery cell.

[0015] As a preferred solution for the slurry scraping structure of the battery cell slurry coating equipment, a scraper plate is also provided at the lower end of the return hopper, and a plurality of protrusions are provided on the scraper plate corresponding to the positions of the limiting grooves. The width of the protrusions is the same as the width of the limiting grooves, and the protrusions are leaning against the limiting grooves to clean the slurry in the grooves.

[0016] Beneficial effects of the utility model:

[0017] (1) The scraper of the utility model is arranged in the slurry hanging barrel, which is closer to the slurry liquid surface, and the slurry falling path is shorter, which can reduce the influence of the external temperature on the falling slurry. At the same time, the excess slurry on the battery cell will fall into the return hopper after being scraped off by the scraper. The scraped slurry will be re-mixed with the slurry in the slurry hanging barrel along the inclined direction of the return hopper, which can prevent the scraped slurry from falling on the battery cell below.

[0018] (2) The scraper of the utility model adopts a split design. The gap width between the two scrapers can be adjusted by the adjustment device, and the positions of the two scrapers can be positioned by the fixing device. The operator can freely adjust the position of the scraper according to the thickness of the battery cell. The operation is simple and quick. When the scraper is worn, the positioning of the third push rod can be released by rotating the third rotating handle, so that the scraper can be replaced separately without removing the mounting plate, thereby reducing the maintenance cost of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure in which the slurry scraping structure for the battery cell slurry coating equipment described in the utility model is installed in the slurry coating barrel.

[0021] Figure 2 It is a structural schematic diagram of the slurry coating and scraping structure for battery cell slurry coating equipment described in the utility model.

[0022] Figure 3 It is a schematic diagram of the relevant structure of the mounting plate described in the utility model.

[0023] Figure 4 It is a structural schematic diagram of the material return device and the pulp hanging barrel described in the utility model.

[0024] In the figure:

[0025] 1. Mounting plate; 11. Mounting groove; 12. First support plate; 13. First push rod; 14. First rotating handle; 2. Scraper; 3. Fixing device; 31. Second support plate; 32. Third push rod; 33. Third rotating handle; 4. Adjusting device; 41. Guide rail; 42. Sliding block; 43. Sliding rod; 44. Spring; 45. Second push rod; 46. Second rotating handle; 5. Return device; 51. Mounting frame; 52. Return hopper; 53. Slurry scraper; 54. Bump; 6. Slurry roller; 61. Limiting groove; 100. Slurry barrel. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0027] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1 and Figure 2 As shown, the utility model provides a slurry coating and scraping structure for battery cell slurry coating equipment, including a mounting plate 1 installed on a slurry coating barrel 100, the mounting plate 1 is flush with the upper surface of the slurry coating barrel 100, and the mounting plate 1 is recessed inward to form a mounting groove 11, two scrapers 2 are arranged opposite to each other in the mounting groove 11, and a fixing device 3 is arranged above the scraper 2 for positioning the scraper 2; a slurry coating gap is arranged between the two scrapers 2, and an adjusting device 4 is arranged on one side of the scraper 2 for adjusting the gap width between the two scrapers 2; an opening for the battery cell to pass through is also opened at a position of the mounting plate 1 corresponding to the slurry coating gap, and a material return device 5 is also arranged below the mounting plate 1 corresponding to the opening for recovering excess slurry in the slurry coating barrel 100.

[0031] Specifically, both ends of the upper surface of the mounting plate 1 of the present embodiment extend outward to form a first support plate 12. The first support plate 12 can be detachably mounted on the upper surface of the slurry barrel 100, and the end of the mounting plate 1 and the first support plate 12 form an L-shaped structure, so that the mounting groove 11 is located inside the slurry barrel 100, and the scraper 2 in the mounting groove 11 is closer to the slurry liquid surface, and the slurry falling path is shorter, which can reduce the influence of the external temperature on the falling slurry.

[0032] Preferably, the installation method of the first support plate 12 of the present embodiment can adopt the method of a first push rod 13 and a first rotating handle 14. By installing a plurality of first push rods 13 at intervals on the first support plate 12, a first rotating handle 14 is installed at one end of the first push rod 13. The operator can drive the first push rod 13 to pass through the first support plate 12 and be threadedly connected to the upper surface of the slurry hanging bucket 100 by rotating the first rotating handle 14, and the installation and disassembly are simple and convenient.

[0033] like Figure 3As shown, the adjustment device 4 of this embodiment includes a plurality of guide rails 41 arranged at intervals along the length direction of the mounting groove 11. The guide rails 41 of this embodiment are preferably two, which are respectively arranged at the two ends of the mounting groove 11. Each guide rail 41 is slidably connected to two sliders 42. The two scrapers 2 are respectively connected to the two sliders 42 on each guide rail 41 in a one-to-one correspondence, so that the two scrapers 2 can move along the guide rail 41, and a sliding rod 43 is slidably connected between the two scrapers 2. A spring 44 is sleeved on the sliding rod 43. When the spring 44 is in the initial state, the gap width between the two scrapers 2 is the largest. At the same time, the mounting plate 1 A plurality of second push rods 45 are also installed at intervals on one side. In the present embodiment, there are preferably two second push rods 45, which are respectively arranged on the edges of the two ends of the side of the scraper 2. A second rotating handle 46 is installed at one end of the second push rod 45, and the other end passes through the mounting plate 1 and abuts against the side of one of the scrapers 2. When it is necessary to adjust the gap width between the two scrapers 2, the operator can rotate the second rotating handle 46 to drive the second push rod 45 to push one of the scrapers 2 toward the direction of the other scraper 2, thereby reducing the gap width between the two scrapers 2 to adapt to different thicknesses of battery cells, thereby improving the applicability of the device.

[0034] Specifically, the fixing device 3 of the present embodiment includes two second support plates 31 arranged at intervals on the mounting plate 1, and the two second support plates 31 are preferably arranged at the two end edges of the top surface of the mounting plate 1. Two third push rods 32 are installed at the positions corresponding to the two scrapers 2 on the second support plate 31, and a third rotating handle 33 is installed at one end of the third push rod 32. When the gap width between the two scrapers 2 is adjusted, the operator can drive the third push rod 32 to pass through the second support plate 31 and abut against the top surface of the scraper 2 by rotating the third rotating handle 33, thereby realizing the positioning of the scraper 2; when the scraper 2 is worn, the positioning of the third push rod 32 can be released by rotating the third rotating handle 33, so that the scraper 2 can be replaced separately without removing the mounting plate 1, thereby reducing maintenance costs.

[0035] like Figure 4 As shown, the return device 5 of this embodiment includes two mounting frames 51 spaced apart below the mounting plate 1, and a return hopper 52 is provided between the two mounting frames 51 at the opening of the mounting plate 1. Excess slurry on the battery cell will fall into the return hopper 52 after being scraped off by the scraper 2. At the same time, the upper end of the return hopper 52 is tilted downward, and the scraped slurry will be re-mixed with the slurry in the slurry hanging barrel 100 along the tilting direction of the return hopper 52, thereby preventing the scraped slurry from falling onto the battery cell below.

[0036] Specifically, a slurry hanging roller 6 is rotatably arranged below the mounting frame 51 of the present embodiment. The slurry hanging roller 6 is close to the bottom of the inner wall of the slurry hanging barrel 100, and all the slurry in the slurry hanging barrel 100 can be coated on the battery cells to avoid unnecessary waste of slurry. At the same time, the slurry hanging roller 6 is provided with a plurality of limit grooves 61 at intervals along its length direction, and the width of the limit grooves 61 is the same as the width of a single battery cell, so that the slurry hanging roller 6 can drive multiple battery cells to perform slurry hanging operations at the same time, thereby improving the slurry hanging efficiency of the battery cells.

[0037] More specifically, a scraper plate 53 is further provided at the lower end of the return hopper 52 of the present embodiment, and a plurality of protrusions 54 are provided at the position of the scraper plate 53 corresponding to the limiting groove 61. The width of the protrusion 54 is the same as the width of the limiting groove 61, and the protrusion 54 leans against the limiting groove 61 to clean the slurry in the limiting groove 61, thereby preventing the limiting groove 61 from being filled with the slurry in the slurry barrel 100, making it impossible for the slurry roller 6 to guide the moving direction of the battery cell.

[0038] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A pulp coating and scraping structure for a battery cell pulp coating device, characterized in that: The invention comprises a mounting plate (1) mounted on a slurry barrel (100), wherein the mounting plate (1) is flush with the upper surface of the slurry barrel (100), and the mounting plate (1) is recessed inward to form a mounting groove (11), wherein two scrapers (2) are arranged opposite to each other in the mounting groove (11), and a fixing device (3) is arranged above the scrapers (2) for positioning the scrapers (2); a slurry scraping gap is arranged between the two scrapers (2), and an adjusting device (4) is arranged on one side of the scrapers (2) for adjusting the gap width between the two scrapers (2); an opening for passing a battery cell is also provided on the mounting plate (1) at a position corresponding to the slurry scraping gap, and a material return device (5) is also arranged below the mounting plate (1) corresponding to the opening for recovering excess slurry in the slurry barrel (100).

2. The slurry coating and scraping structure for battery cell slurry coating equipment according to claim 1, characterized in that: Both ends of the upper surface of the mounting plate (1) extend outward to form a first support plate (12), and the first support plate (12) is detachably mounted on the upper surface of the slurry hanging barrel (100), and the end of the mounting plate (1) and the first support plate (12) form an L-shaped structure, so that the mounting groove (11) is located inside the slurry hanging barrel (100).

3. The slurry coating and scraping structure for battery cell slurry coating equipment according to claim 2, characterized in that: A plurality of first push rods (13) are installed at intervals on the first support plate (12), one end of the first push rod (13) is installed with a first rotating handle (14), and the other end passes through the first support plate (12) and is threadedly connected to the upper surface of the pulp hanging bucket (100).

4. The pulp coating and scraping structure for battery cell pulp coating equipment according to claim 1, characterized in that: The adjusting device (4) comprises a plurality of guide rails (41) arranged at intervals along the length direction of the mounting groove (11), each of the guide rails (41) being slidably connected to two sliders (42), the two scrapers (2) being respectively connected to the two sliders (42) on each guide rail (41) in a one-to-one correspondence, and a sliding rod (43) being slidably connected between the two scrapers (2), the sliding rod (43) being sleeved with a spring (44), and when the spring (44) is in an initial state, the gap width between the two scrapers (2) is at its maximum.

5. The pulp coating and scraping structure for battery cell pulp coating equipment according to claim 4, characterized in that: The adjusting device (4) further comprises a plurality of second push rods (45) installed at intervals on one side of the mounting plate (1); a second rotating handle (46) is installed at one end of the second push rod (45); the other end passes through the mounting plate (1) and abuts against the side surface of one of the scrapers (2) to adjust the gap width between the two scrapers (2).

6. The pulp coating and scraping structure for battery cell pulp coating equipment according to claim 1, characterized in that: The fixing device (3) comprises a second support plate (31) arranged at intervals on the mounting plate (1); two third push rods (32) are installed on the second support plate (31) at positions corresponding to the two scrapers (2); a third rotating handle (33) is installed at one end of the third push rod (32), and the other end passes through the second support plate (31) and abuts against the top surface of the scraper (2).

7. The slurry coating and scraping structure for battery cell slurry coating equipment according to claim 1, characterized in that: The return material device (5) comprises two mounting frames (51) spaced apart below the mounting plate (1), a return material hopper (52) is arranged between the two mounting frames (51) at an opening corresponding to the mounting plate (1), and the upper end of the return material hopper (52) is arranged to be inclined downward to facilitate the recovery of excess slurry into the slurry hanging barrel (100).

8. The pulp coating and scraping structure for battery cell pulp coating equipment according to claim 7, characterized in that: A slurry hanging roller (6) is rotatably arranged below the mounting frame (51), and the slurry hanging roller (6) is close to the bottom of the inner wall of the slurry hanging barrel (100).

9. The pulp coating and scraping structure for battery cell pulp coating equipment according to claim 8, characterized in that: The pulp coating roller (6) is provided with a plurality of limiting grooves (61) at intervals along its length direction, and the width of the limiting grooves (61) is the same as the width of a single battery cell.

10. The slurry coating and scraping structure for battery cell slurry coating equipment according to claim 9, characterized in that: A scraper (53) is also provided at the lower end of the return hopper (52), and a plurality of protrusions (54) are provided on the scraper (53) at positions corresponding to the limiting grooves (61). The width of the protrusions (54) is the same as the width of the limiting grooves (61), and the protrusions (54) are placed in the limiting grooves (61) to clean the slurry in the grooves.

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