Stirring structure for battery piece slurry hanging equipment

Abstract

The utility model discloses a stirring structure for battery piece slurry hanging equipment, which comprises a stirring shaft arranged in a slurry hanging barrel, a plurality of first stirring groups and second stirring groups are arranged on the stirring shaft, and the first stirring groups and the second stirring groups are distributed at intervals in a staggered manner along the length direction of the stirring shaft. And the inclination directions of the blades of the first stirring group and the second stirring group are opposite. A spiral stirring structure is adopted, the first stirring group and the second stirring group which are opposite in blade inclination direction are arranged at the head end and the tail end of the stirring shaft, and slurry at the two ends of the slurry hanging barrel circularly flows to the central position of the stirring shaft under the pushing action of the first stirring group and the second stirring group; therefore, the slurry at each position in the slurry hanging barrel can be uniformly stirred, the slurry can be effectively prevented from caking, and finally, the consistency of the prepared battery piece is relatively good; meanwhile, the stirring shaft adopts a split type structure, so that the stirring shaft can be directly detached when the stirring shaft needs to be cleaned or replaced, and the development of equipment maintenance work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a stirring structure used 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] In order to evenly mix the slurry in the slurry hopper, a stirring shaft is usually arranged at the bottom of the slurry hopper, and the slurry in the slurry hopper is stirred by the stirring shaft. However, the existing stirring shaft usually adopts a structural design of linear stirring blades or stirring rods, which results in the stirring shaft being able to only stir the slurry in the same direction in a fixed direction, while the slurry in different directions cannot be mixed. For example, the slurry in the corner of the slurry barrel cannot be mixed with the slurry in the middle part, which easily leads to slurry agglomeration and causes differences in the quality of the slurry in different parts, resulting in poor consistency of the final battery cells. In addition, most of the existing stirring shafts adopt an integrated structure and are installed in the slurry hopper. However, due to the presence of many active substances in the slurry, it has a certain corrosiveness. When the stirring shaft is worn or corroded, the stirring shaft needs to be replaced, and the stirring shaft with an integrated structure is difficult to disassemble, which brings certain difficulties to the subsequent equipment maintenance work. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art and provide a stirring structure for battery cell slurry coating equipment, which can achieve uniform stirring of the slurry at various positions in the slurry coating barrel, avoid slurry agglomeration, and facilitate replacement, so as to solve the problems raised in the background technology.

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

[0006] A stirring structure for a battery cell coating device comprises a stirring shaft installed in a coating barrel, wherein a plurality of first stirring groups and a second stirring group are arranged on the stirring shaft, and the first stirring groups and the second stirring groups are staggered and distributed along the length direction of the stirring shaft, so that the head and tail ends of the stirring shaft are the first stirring group and the second stirring group respectively, and the inclination directions of the blades of the first stirring group and the second stirring group are arranged in opposite directions.

[0007] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, the first stirring group includes a plurality of first stirring blades spaced and inclined along the first circumferential direction of the stirring shaft, and the first stirring blades are bent left and right along their own length directions. The second stirring group includes a plurality of second stirring blades spaced and inclined along the second circumferential direction of the stirring shaft, and the second stirring blades are bent left and right along their own length directions, and the first circumferential direction is opposite to the second circumferential direction.

[0008] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, the two ends of the stirring shaft are respectively provided with a first connecting shaft and a second connecting shaft, the first connecting shaft is snap-connected with the third connecting shaft, the second connecting shaft is snap-connected with the fourth connecting shaft, and the third connecting shaft and the fourth connecting shaft are both installed on both sides of the slurry coating barrel through bearing assemblies.

[0009] As a preferred solution for the stirring structure of the battery cell coating equipment, a through hole is opened at the axis center of the stirring shaft, and the first connecting shaft and the second connecting shaft are inserted into the through holes at both ends of the stirring shaft and are interference fit with the stirring shaft.

[0010] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, the first connecting shaft includes a first connecting member connected to the stirring shaft, a first connecting groove is provided at one end of the first connecting member away from the stirring shaft, a spring is arranged in the first connecting groove, the spring protrudes from the first connecting groove and is connected to the second connecting member, a second connecting groove is provided at one end of the second connecting member, the spring is installed in the second connecting groove, and the inner diameter of the second connecting groove is the same as the outer diameter of the first connecting member, so that the inner wall of the second connecting member is slidably connected to the outer wall of the first connecting member.

[0011] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, the second connecting member has two first slots symmetrically opened at one end away from the first connecting member, and two second clamping blocks are arranged at one end of the third connecting shaft corresponding to the positions of the first slots, and the second clamping blocks are engaged and connected with the first slots.

[0012] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, a first clamping block is also arranged between the two first clamping grooves of the second connecting member, and a second clamping groove is arranged at one end of the third connecting shaft corresponding to the position of the first clamping block, and the first clamping block is engaged and connected with the second clamping groove.

[0013] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, two third blocks are symmetrically arranged at one end of the second connecting shaft away from the stirring shaft, and a fourth slot is arranged at one end of the fourth connecting shaft corresponding to the position of the third block, and the third block is engaged and connected with the fourth slot.

[0014] As a preferred solution for the stirring structure of the battery cell slurry coating equipment, a third slot is further provided between the two third blocks of the second connecting shaft, and a fourth block is provided at one end of the fourth connecting shaft corresponding to the position of the third slot, and the fourth block is engaged and connected with the third slot.

[0015] As a preferred solution for the stirring structure of the battery sheet coating equipment, it also includes a driving device for driving the stirring shaft, and the driving device is drivingly connected to the third connecting shaft or the fourth connecting shaft.

[0016] Beneficial effects of the utility model:

[0017] The utility model adopts a spiral stirring structure design, and the first and second ends of the stirring shaft are a first stirring group and a second stirring group with blades in opposite inclination directions. The slurry at both ends of the slurry hanging barrel will circulate to the center position of the stirring shaft under the driving action of the first stirring blade and the second stirring blade, so that the slurry at various positions in the slurry hanging barrel can be stirred evenly, which can effectively avoid slurry agglomeration, and the final battery cell has good consistency; at the same time, the stirring shaft of the utility model adopts a split structure, and when the stirring shaft needs to be cleaned or replaced, it can be directly disassembled to facilitate equipment maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a schematic diagram of the overall structure of the stirring structure used for the battery sheet slurry coating equipment described in the utility model.

[0020] Figure 2 It is a structural schematic diagram of the stirring shaft and the driving device described in the utility model.

[0021] Figure 3 It is a schematic diagram of the split structure of the stirring shaft described in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the stirring shaft described in the utility model.

[0023] Figure 5 It is a schematic diagram of the split structure of the first connecting shaft and the third connecting shaft described in the utility model.

[0024] Figure 6 It is a schematic diagram of the split structure of the second connecting shaft and the fourth connecting shaft described in the utility model.

[0025] In the figure:

[0026] 1. stirring shaft; 11. first stirring group; 12. second stirring group; 2. first connecting shaft; 21. first connecting member; 22. spring; 23. second connecting member; 231. first slot; 232. first block; 3. second connecting shaft; 31. third block; 32. third slot; 4. third connecting shaft; 41. second block; 42. second slot; 5. fourth connecting shaft; 51. fourth slot; 52. fourth block; 100. slurry hanging barrel; 200. bearing assembly; 300. driving device. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] like Figure 1 As shown, the utility model provides a stirring structure for a battery cell slurry coating device, including a stirring shaft 1 installed in a slurry coating barrel 100, and a plurality of first stirring groups 11 and second stirring groups 12 are arranged on the stirring shaft 1. The first stirring groups 11 and the second stirring groups 12 are staggered and distributed along the length direction of the stirring shaft 1, so that the first and tail ends of the stirring shaft 1 are the first stirring groups 11 and the second stirring groups 12 respectively, and the inclination directions of the blades of the first stirring group 11 and the second stirring group 12 are arranged in opposite directions.

[0032] like Figure 4 As shown, the first stirring group 11 includes a plurality of first stirring blades spaced and inclined along the first circumferential direction of the stirring shaft 1, and the first stirring blades are bent left and right along their own length directions. The second stirring group 12 includes a plurality of second stirring blades spaced and inclined along the second circumferential direction of the stirring shaft 1, and the second stirring blades are bent left and right along their own length directions, and the first circumferential direction is opposite to the second circumferential direction.

[0033] The utility model adopts a spiral stirring structure design, and the first and second ends of the stirring shaft 1 are a first stirring group 11 and a second stirring group 12 with blades inclined in opposite directions. The slurry at both ends of the slurry hanging barrel 100 will circulate toward the center position of the stirring shaft 1 under the driving action of the first stirring blade and the second stirring blade, so that the slurry at various positions in the slurry hanging barrel 100 can be stirred evenly, which can effectively avoid slurry agglomeration, and the final battery cell has good consistency.

[0034] like Figure 3 As shown, in order to facilitate the installation and disassembly of the stirring shaft 1, a first connecting shaft 2 and a second connecting shaft 3 are respectively provided at both ends of the stirring shaft 1, the first connecting shaft 2 is snap-connected with the third connecting shaft 4, the second connecting shaft 3 is snap-connected with the fourth connecting shaft 5, and the third connecting shaft 4 and the fourth connecting shaft 5 are both installed on both sides of the slurry barrel 100 through the bearing assembly 200.

[0035] More specifically, a through hole is opened at the axis center of the stirring shaft 1 , and the first connecting shaft 2 and the second connecting shaft 3 are inserted into the through holes at both ends of the stirring shaft 1 and are interference fit with the stirring shaft 1 .

[0036] like Figure 5 As shown, the first connecting shaft 2 includes a first connecting member 21 connected to the stirring shaft 1, and a first connecting groove is opened at one end of the first connecting member 21 away from the stirring shaft 1, and a spring 22 is arranged in the first connecting groove. The spring 22 protrudes from the first connecting groove and is connected to a second connecting member 23, and a second connecting groove is opened at one end of the second connecting member 23. The spring 22 is installed in the second connecting groove, and the inner diameter of the second connecting groove is the same as the outer diameter of the first connecting member 21, so that the inner wall of the second connecting member 23 can be slidably connected to the outer wall of the first connecting member 21, and the extension and retraction of the second connecting member 23 can be controlled by pressing the second connecting member 23. When the stirring shaft 1 is installed, the operator presses the second connecting member 23 to make the second connecting member 23 retract along the rear end of the first connecting member 21, so that the second connecting member 23 can be stuck in the third connecting shaft 4 on one side of the slurry hanging barrel 100.

[0037] Specifically, in order to facilitate the connection between the second connecting member 23 and the third connecting shaft 4, two first slots 231 are symmetrically provided at one end of the second connecting member 23 away from the first connecting member 21, and two second clamping blocks 41 are arranged at one end of the third connecting shaft 4 corresponding to the position of the first slots 231, and the second clamping blocks 41 are engaged and connected with the first slots 231; at the same time, a first clamping block 232 is also arranged between the two first slots 231 of the second connecting member 23, and a second slot 42 is arranged at one end of the third connecting shaft 4 corresponding to the position of the first slot 232, and the first clamping block 232 is engaged and connected with the second slot 42.

[0038] like Figure 6 As shown, in order to facilitate the connection between the second connecting shaft 3 and the fourth connecting shaft 5, two third clamping blocks 31 are symmetrically arranged at one end of the second connecting shaft 3 away from the stirring shaft 1, and a fourth clamping groove 51 is arranged at one end of the fourth connecting shaft 5 corresponding to the position of the third clamping block 31, and the third clamping block 31 is engaged and connected with the fourth clamping groove 51; at the same time, a third clamping groove 32 is also provided between the two third clamping blocks 31 of the second connecting shaft 3, and a fourth clamping block 52 is arranged at one end of the fourth connecting shaft 5 corresponding to the position of the third clamping groove 32, and the fourth clamping block 52 is engaged and connected with the third clamping groove 32.

[0039] During specific use, the operator can first insert the third block 31 of the second connecting shaft 3 into the fourth slot 51 of the fourth connecting shaft 5. After the second connecting shaft 3 is firmly installed, the second connecting member 23 is pressed to make the second connecting member 23 retract along the rear end of the first connecting member 21. At this time, the spring 22 is in a compressed state. Then, the first block 232 and the second block 41 are aligned with the positions of the first slot 231 and the second slot 42 respectively. Finally, the second connecting member 23 is released. The second connecting member 23 will be pushed forward under the elastic force of the spring 22, so that the second connecting member 23 is inserted into the third connecting shaft 4 on one side of the slurry hanging barrel 100.

[0040] like Figure 2 As shown, the present embodiment also includes a driving device 300, which is transmission-connected to the third connecting shaft 4 or the fourth connecting shaft 5, and drives the first connecting shaft 2, the second connecting shaft 3 and the stirring shaft 1 to rotate through the third connecting shaft 4 or the fourth connecting shaft 5. When the first rotating blade and the second rotating blade rotate, the slurry at both ends of the slurry barrel 100 will circulate to the center position of the stirring shaft 1, so that the slurry at various positions in the slurry barrel 100 can be evenly stirred.

[0041] 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 stirring structure for battery cell coating equipment, characterized in that: The invention comprises a stirring shaft (1) installed in a slurry coating barrel (100), wherein a plurality of first stirring groups (11) and a second stirring group (12) are arranged on the stirring shaft (1), and the first stirring groups (11) and the second stirring groups (12) are arranged in an alternating manner along the length direction of the stirring shaft (1), so that the first and the second ends of the stirring shaft (1) are respectively the first stirring group (11) and the second stirring group (12), and the first stirring group (11) comprises a plurality of first stirring blades arranged at intervals and tilted along a first circumferential direction of the stirring shaft (1), and the first stirring blades are arranged in a left-right bending manner along their own length direction, and the second stirring group (12) comprises a plurality of second stirring blades arranged at intervals and tilted manner along a second circumferential direction of the stirring shaft (1), and the second stirring blades are arranged in a left-right bending manner along their own length direction, and the first circumferential direction is opposite to the second circumferential direction.

2. The stirring structure for battery sheet coating equipment according to claim 1, characterized in that: The two ends of the stirring shaft (1) are respectively provided with a first connecting shaft (2) and a second connecting shaft (3); the first connecting shaft (2) is snap-connected with a third connecting shaft (4); the second connecting shaft (3) is snap-connected with a fourth connecting shaft (5); the third connecting shaft (4) and the fourth connecting shaft (5) are both installed on both sides of the slurry barrel (100) through a bearing assembly (200).

3. The stirring structure for battery sheet coating equipment according to claim 2, characterized in that: A through hole is provided at the axis center of the stirring shaft (1), and the first connecting shaft (2) and the second connecting shaft (3) are inserted into the through holes at both ends of the stirring shaft (1) to form an interference fit with the stirring shaft (1).

4. The stirring structure for battery sheet slurry coating equipment according to claim 2, characterized in that: The first connecting shaft (2) comprises a first connecting member (21) connected to the stirring shaft (1); a first connecting groove is provided at one end of the first connecting member (21) away from the stirring shaft (1); a spring (22) is arranged in the first connecting groove; the spring (22) protrudes from the first connecting groove and is connected to a second connecting member (23); a second connecting groove is provided at one end of the second connecting member (23); the spring (22) is installed in the second connecting groove; and the inner diameter of the second connecting groove is the same as the outer diameter of the first connecting member (21), so that the inner wall of the second connecting member (23) is slidably connected to the outer wall of the first connecting member (21).

5. The stirring structure for battery sheet slurry coating equipment according to claim 4, characterized in that: Two first clamping grooves (231) are symmetrically provided at one end of the second connecting member (23) away from the first connecting member (21), and two second clamping blocks (41) are provided at one end of the third connecting shaft (4) at positions corresponding to the first clamping grooves (231), and the second clamping blocks (41) are clamped and connected with the first clamping grooves (231).

6. The stirring structure for battery sheet slurry coating equipment according to claim 5, characterized in that: A first clamping block (232) is also provided between the two first clamping grooves (231) of the second connecting member (23), a second clamping groove (42) is provided at one end of the third connecting shaft (4) at a position corresponding to the first clamping block (232), and the first clamping block (232) is clamped and connected with the second clamping groove (42).

7. The stirring structure for battery sheet slurry coating equipment according to claim 2, characterized in that: Two third clamping blocks (31) are symmetrically arranged at one end of the second connecting shaft (3) away from the stirring shaft (1), and a fourth clamping groove (51) is arranged at one end of the fourth connecting shaft (5) at a position corresponding to the third clamping block (31), and the third clamping block (31) is engaged and connected with the fourth clamping groove (51).

8. The stirring structure for battery sheet slurry coating equipment according to claim 7, characterized in that: A third clamping groove (32) is also provided between the two third clamping blocks (31) of the second connecting shaft (3), and a fourth clamping block (52) is provided at one end of the fourth connecting shaft (5) at a position corresponding to the third clamping groove (32), and the fourth clamping block (52) is engaged and connected with the third clamping groove (32).

9. The stirring structure for battery sheet slurry coating equipment according to claim 2, characterized in that: It also comprises a driving device (300) for driving the stirring shaft (1), wherein the driving device (300) is drivingly connected to the third connecting shaft (4) or the fourth connecting shaft (5).

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