Automatic slurry stirring device

Abstract

The utility model discloses an automatic slurry stirring device, which is used for uniformly and stably pouring slurry into a battery pole piece, and comprises a rack, a slurry hopper arranged on the rack and used for filling the slurry, and a stirring roller group arranged in the slurry hopper and used for stirring and grouting, the rotating direction of the first stirring roller is opposite to the running direction of the battery pole piece, and the rotating direction of the second stirring roller is opposite to the running direction of the battery pole piece. The second stirring roller is used for being matched with the first stirring roller to extrude slurry into the battery pole piece during grouting. When the battery pole piece passes through the space between the first stirring roller and the second stirring roller, as the first stirring roller and the second stirring roller are both opposite to the moving direction of the battery pole piece, extrusion force can be formed to extrude the slurry in the slurry hopper into the battery pole piece, so that uniform and stable grouting of the battery pole piece is realized; and meanwhile, the influence on subsequent processing of the battery pole piece due to unstable weight of the battery pole piece caused by slurry precipitation at the edge and the bottom of the slurry hopper is avoided.

Description

Technical Field

[0001] This utility model relates to the field of slurry mixing technology, and in particular to an automatic slurry mixing device. Background Technology

[0002] In the production of battery electrodes, continuous production can improve efficiency, maintain the uniformity and stability of the electrodes, and also improve production efficiency, reduce costs, ensure product quality, reduce solvent use, and reduce energy consumption, which is conducive to realizing automated battery production.

[0003] However, in existing slurry hoppers, slurry tends to settle near the edges and bottom during prolonged production. Slurry sedimentation is a common problem during the slurry filling process. Due to uneven particle size distribution, insufficient viscosity, inadequate mixing, and the influence of environmental humidity and temperature, the active materials in the slurry are prone to settling, leading to unstable weight of the battery electrodes and severely affecting battery performance and production efficiency. Therefore, there is an urgent need for a device that can uniformly and stably fill the battery electrodes with slurry. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes an automatic slurry mixing device.

[0005] This utility model is achieved by the following technical solution:

[0006] An automatic slurry mixing device is used to uniformly and stably inject slurry into battery electrodes. It includes a frame and a slurry hopper on the frame for filling slurry. It also includes a mixing roller assembly inside the slurry hopper for mixing the slurry. The mixing roller assembly includes a first mixing roller whose rotation direction is opposite to the running direction of the battery electrodes, and a second mixing roller whose rotation direction is opposite to the running direction of the battery electrodes, which cooperates with the first mixing roller to squeeze the slurry into the battery electrodes during slurry injection.

[0007] As described above, in an automatic slurry mixing device, the number of mixing rollers in the mixing roller assembly is at least two, and the battery electrode is uniformly slurried by the extrusion force generated between the first mixing roller and the second mixing roller.

[0008] As described above, in an automatic slurry mixing device, the distance between the first mixing roller and the second mixing roller corresponds to the thickness of the battery electrode sheet, and the second mixing roller is spaced apart from the bottom wall of the other side of the slurry hopper to facilitate the operation of the second mixing roller.

[0009] As described above, the automatic slurry mixing device further includes a first driving mechanism for driving the first mixing roller and a second driving mechanism for driving the second mixing roller, wherein the driving rotation directions of the first driving mechanism and the second driving mechanism are opposite.

[0010] As described above, an automatic slurry mixing device has a first driven part on one side of the first mixing roller and a first driving part corresponding to the first driven part on one side of the first driving mechanism, the first driving part and the first driven part being connected by a belt; a second driven part is provided on one side of the second mixing roller and a second driving part corresponding to the second driven part is provided on one side of the second driving mechanism, the second driving part and the second driven part being connected by a belt.

[0011] The automatic slurry mixing device described above further includes a guide roller for guiding battery electrodes, disposed on one side of the first mixing roller and the second mixing roller.

[0012] In the above-described automatic slurry mixing device, the guide roller is located on the side close to the bottom wall.

[0013] In the above-described automatic slurry mixing device, the guide roller is located on the side close to the running direction of the battery electrode.

[0014] In the above-described automatic slurry mixing device, the distance between the guide roller and the bottom wall corresponds to the thickness of the battery electrode, and the guide roller is provided with a gap between itself and the first mixing roller and the second mixing roller to facilitate the passage of the battery electrode.

[0015] As described above, in an automatic slurry mixing device, the slurry hopper is provided with a plurality of mounting holes for mounting the first mixing roller, the second mixing roller, and the guide roller.

[0016] Compared with the prior art, the automatic slurry mixing device proposed in this utility model has the following beneficial effects:

[0017] When the battery electrode passes between the first stirring roller and the second stirring roller, since the first stirring roller and the second stirring roller are in the opposite direction to the running direction of the battery electrode, they can form a squeezing force to squeeze the slurry in the slurry hopper into the battery electrode, so as to achieve uniform and stable slurry filling of the battery electrode. At the same time, it avoids the slurry settling near the edge and bottom of the slurry hopper, which would cause the weight of the battery electrode to be unstable and affect the subsequent processing of the battery electrode. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 for Figure 1 Another perspective structural diagram;

[0021] Figure 3 for Figure 1 Another perspective structural diagram;

[0022] Figure 4 for Figure 3 A schematic diagram of the AA section from one perspective;

[0023] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0024] Figure 6 for Figure 5 Another perspective structural diagram;

[0025] Figure 7 for Figure 6 A schematic diagram of the BB cross-section from one perspective.

[0026] The corresponding reference numerals in the attached figures are as follows:

[0027] 1. Battery electrode; 2. Frame; 3. Pulley hopper; 31. Bottom wall; 32. Mounting hole; 4. Agitator roller assembly; 41. First agitator roller; 411. First driven part; 42. Second agitator roller; 421. Second driven part; 5. Guide roller; 6. First drive mechanism; 61. First drive part; 7. Second drive mechanism; 71. Second drive part. Detailed Implementation

[0028] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] Example 1

[0030] Please combine Figures 1 to 4An automatic slurry mixing device is used to uniformly and stably inject slurry into a battery electrode 1. It includes a frame 2 and a slurry hopper 3 disposed on the frame 2 for filling slurry. It also includes a mixing roller assembly 4 disposed inside the slurry hopper 3 for mixing the slurry. The mixing roller assembly 4 includes a first mixing roller 41 whose rotation direction is opposite to the running direction of the battery electrode 1, and a second mixing roller 42 whose rotation direction is opposite to the running direction of the battery electrode 1, which cooperates with the first mixing roller 41 to squeeze the slurry into the battery electrode 1 during slurry injection. The first stirring roller 41 and the second stirring roller 42 run in opposite directions to the battery electrode 1. When the battery electrode 1 passes between the first stirring roller 41 and the second stirring roller 42, a squeezing force is generated, squeezing the slurry in the slurry hopper 3 into the battery electrode 1, so as to achieve uniform and stable slurry filling of the battery electrode 1. At the same time, the slurry is also stirred to avoid slurry sedimentation near the edge and bottom of the slurry hopper 3, which would cause the weight of the battery electrode 1 to be unstable and affect the subsequent battery production.

[0031] In this process, the first stirring roller 41 and the second stirring roller 42 can not only form a squeezing force to help the slurry be poured into the battery electrode 1, but also rely on their rotation and stirring to stir the slurry in the slurry hopper 3, so as to avoid the slurry settling and affecting the performance of the slurry and the slurry filling of the battery electrode 1.

[0032] Furthermore, the automatic slurry mixing device also includes a guide roller 5 disposed on one side of the first mixing roller 41 and the second mixing roller 42 for guiding the battery electrode 1. As a preferred embodiment of this solution, and not a limitation thereof, the guide roller 5 is disposed on the side closer to the direction of entry of the battery electrode 1. The battery electrode 1 is first guided by the guide roller 5, and then passes through the first mixing roller 41 and the second mixing roller 42. Since the rotation directions of the first mixing roller 41 and the second mixing roller 42 are opposite to the running direction of the battery electrode 1, the slurry in the slurry hopper 3 is stirred by the first mixing roller 41 and the second mixing roller 42. The slurry is injected into the battery electrode 1 under the pressure of the stirring roller 42, so as to achieve uniform and stable slurry filling of the battery electrode 1 and realize continuous production of the battery electrode 1 being filled. Optionally, two guide rollers 5 can also be set, one on the side of the battery electrode 1 entering the direction to guide it into the stirring roller group 4 for stirring and slurry filling, and the other on the side of the battery electrode 1 leaving after stirring and slurry filling to guide the direction for subsequent processing of the battery electrode 1. The guide rollers 5 can also stir the slurry while driven, further avoiding slurry sedimentation that would affect the slurry filling of the battery electrode 1.

[0033] In this embodiment, the automatic slurry mixing device further includes a first drive mechanism 6 for driving the first mixing roller 41 and a second drive mechanism 7 for driving the second mixing roller 42. The first drive mechanism 6 and the second drive mechanism 7 rotate in opposite directions. The first drive mechanism 6 and the second drive mechanism 7 drive the first mixing roller 41 and the second mixing roller 42, ensuring that the first mixing roller 41 and the second mixing roller 42 work independently and provide stable extrusion pressure to achieve uniform and stable slurry filling of the battery electrode sheet 1.

[0034] Furthermore, a first driven part 411 is provided on one side of the first stirring roller 41, and a first driving part 61 corresponding to the first driven part 411 is provided on one side of the first driving mechanism 6. The first driving part 61 and the first driven part 411 are connected by a belt; a second driven part 421 is provided on one side of the second stirring roller 42, and a second driving part 71 corresponding to the second driven part 421 is provided on one side of the second driving mechanism 7. The second driving part 71 and the second driven part 421 are connected by a belt.

[0035] Furthermore, the distance between the first stirring roller 41 and the second stirring roller 42 corresponds to the thickness of the battery electrode 1. A gap is provided between the second stirring roller 42 and the bottom wall of the slurry hopper 3 to facilitate the operation of the second stirring roller 42. The gap is set according to actual needs. The gap between the first stirring roller 41 and the second stirring roller 42 allows the battery electrode 1 to pass through easily, and also facilitates the injection of slurry into the battery electrode 1 by the squeezing force generated by the rotation of the first stirring roller 41 and the second stirring roller 42.

[0036] Furthermore, the number of stirring rollers in the stirring roller assembly 4 is at least two. That is, under the premise that the running direction of the battery electrode 1 is opposite to the rotation direction of the first stirring roller 41 and the second stirring roller 42, and the battery electrode 1 passes between the first stirring roller 41 and the second stirring roller 42 and is injected with slurry under extrusion pressure, the number of the first stirring roller 41 can be the same as the number of the second stirring roller 42, or the number of the first stirring roller 41 can differ from the number of the second stirring roller 42 by one. This further ensures that the slurry is injected into the battery electrode 1 evenly and stably, and at the same time, the slurry in the slurry hopper 3 is stirred evenly to avoid sedimentation.

[0037] In this embodiment, the bottom wall 31 on one side of the slurry hopper 3 is inclined at a certain angle to the horizontal plane. This is a preferred embodiment, not a limitation, of this solution. The bottom wall 31 is an arc-shaped wall. The guide roller 5 is located near the bottom wall 31. The battery electrode 1 is placed into the slurry hopper 3 through the bottom wall 31 and passes through the stirring roller assembly 4 to complete the slurry filling operation. The arc-shaped bottom wall 31 can better agitate the slurry with the first stirring roller 41 and the second stirring roller 42, ensuring that the active material of the slurry is not affected, further ensuring that the slurry is poured into the battery electrode 1, and thus ensuring the performance of the battery after production.

[0038] Furthermore, the slurry hopper 3 is provided with a plurality of mounting holes 32 for mounting the first stirring roller 41, the second stirring roller 42, and the guide roller 5. The mounting holes 32 allow the first stirring roller 41, the second stirring roller 42, and the guide roller 5 to rotate while ensuring normal slurry loading.

[0039] Furthermore, the guide roller 5 can rotate freely. Optionally, the guide roller 5 can be driven by a driving component to further improve the grouting efficiency and ensure the guidance of the battery electrode 1.

[0040] Furthermore, the distance between the guide roller 5 and the bottom wall 31 corresponds to the thickness of the battery electrode 1, and the guide roller 5 is provided with a gap between it and the first stirring roller 41 and the second stirring roller 42 to facilitate the passage of the battery electrode 1. The gap distance is set according to actual needs.

[0041] The working principle of this embodiment is as follows:

[0042] The present invention proposes an automatic slurry mixing device, which uniformly and stably injects slurry into the battery electrode 1 through the extrusion force formed between the first mixing roller 41 and the second mixing roller 42. The specific principle is as follows:

[0043] The battery electrode 1 is placed into the slurry hopper 3 from the bottom wall 31 of the slurry hopper 3, and guided by the guide roller 5 to the stirring roller group composed of the first stirring roller 41 and the second stirring roller 42. The first stirring roller 41 and the second stirring roller 42 run in opposite directions to the battery electrode 1. When the battery electrode 1 passes between the first stirring roller 41 and the second stirring roller 42, a squeezing force is formed, which squeezes the slurry in the slurry hopper 3 into the battery electrode 1, so as to achieve uniform and stable slurry filling of the battery electrode 1. At the same time, the slurry is also stirred to avoid the slurry settling at the edge and bottom of the slurry hopper 3, which would cause the weight of the battery electrode 1 to be unstable and affect the subsequent battery production.

[0044] Example 2

[0045] Unlike Example 1, in combination Figures 5 to 7As shown, the guide roller 5 is located on the side away from the bottom wall 31. The battery electrode 1 first passes through the first stirring roller 41 and the second stirring roller 42, and then is guided by the guide roller 5. Since the rotation direction of the first stirring roller 41 and the second stirring roller 42 is opposite to the running direction of the battery electrode 1, the slurry in the slurry hopper 3 is squeezed into the battery electrode 1 by the first stirring roller 41 and the second stirring roller 42. The guide roller 5 can guide the battery electrode 1 that has been slurried, which facilitates the subsequent collection and processing of the battery electrode 1, so as to achieve uniform and stable slurrying of the battery electrode 1 and realize the continuous production of the battery electrode 1 that is being slurried.

[0046] Optionally, the relative positions of the guide roller 5 with the first stirring roller 41 and the second stirring roller 42 can be set according to actual conditions to guide and squeeze the battery electrode 1 to achieve uniform and stable grouting of the battery electrode 1 and improve the processing efficiency of the battery electrode 1.

[0047] The working principle of this embodiment is as follows:

[0048] The present invention proposes an automatic slurry mixing device, which uniformly and stably injects slurry into the battery electrode 1 through the extrusion force formed between the first mixing roller 41 and the second mixing roller 42. The specific principle is as follows:

[0049] The battery electrode 1 is placed into the slurry hopper 3 from the bottom wall 31. It passes through the stirring roller group consisting of the first stirring roller 41 and the second stirring roller 42. The first stirring roller 41 and the second stirring roller 42 run in opposite directions to the battery electrode 1. When the battery electrode 1 passes between the first stirring roller 41 and the second stirring roller 42, a squeezing force is generated, squeezing the slurry in the slurry hopper 3 into the battery electrode 1, so as to achieve uniform and stable slurry filling of the battery electrode 1. At the same time, the slurry is stirred to avoid the slurry settling at the edge and bottom of the slurry hopper 3, which would cause the weight of the battery electrode 1 to be unstable and affect the subsequent battery production. After the squeezing and filling is completed, the battery electrode 1 is guided out of the transfer device by the guide roller 5, which facilitates the subsequent collection and processing of the battery electrode 1.

Claims

1. A slurry automatic stirring device for uniformly and stably filling a slurry into a battery electrode sheet (1), comprising a frame (2) and a slurry hopper (3) provided on the frame (2) for loading the slurry, characterized in that, Further comprising a stirring roller set (4) arranged inside the slurry tank (3) for stirring the slurry, the stirring roller set (4) comprising a first stirring roller (41) rotating in a direction opposite to the running direction of the battery pole piece (1), and a second stirring roller (42) rotating in a direction opposite to the running direction of the battery pole piece (1) for pressing the slurry into the battery pole piece (1) in cooperation with the first stirring roller (41) when the slurry is being filled.

2. The automatic slurry stirring device according to claim 1, wherein The number of stirring rollers of the stirring roller set (4) is at least two, and the battery pole piece (1) is uniformly filled by the extrusion force generated by the first stirring roller (41) and the second stirring roller (42) between the first stirring roller (41) and the second stirring roller (42).

3. The automatic slurry stirring device according to claim 1, wherein The interval distance between the first stirring roller (41) and the second stirring roller (42) corresponds to the thickness of the battery pole piece (1), and the second stirring roller (42) is spaced from the other side bottom wall of the slurry tank (3) by a distance facilitating the operation of the second stirring roller (42).

4. The automatic slurry stirring device according to claim 1, wherein The automatic slurry stirring device further comprises a first driving mechanism (6) for driving the first stirring roller (41) and a second driving mechanism (7) for driving the second stirring roller (42), and the driving rotation directions of the first driving mechanism (6) and the second driving mechanism (7) are opposite.

5. The automatic slurry stirring device according to claim 4, wherein The first stirring roller (41) is provided with a first driven part (411) on one side, the first driving mechanism (6) is provided with a first driving part (61) corresponding to the first driven part (411) on one side, and the first driving part (61) and the first driven part (411) are connected by a belt; the second stirring roller (42) is provided with a second driven part (421) on one side, the second driving mechanism (7) is provided with a second driving part (71) corresponding to the second driven part (421) on one side, and the second driving part (71) and the second driven part (421) are connected by a belt.

6. The automatic slurry stirring device according to claim 1, wherein Further comprising a guide roller (5) arranged on one side of the first stirring roller (41) and the second stirring roller (42) for guiding the battery pole piece (1).

7. The automatic slurry stirring device according to claim 6, wherein The bottom wall (31) on one side of the slurry tank (3) is inclined relative to the horizontal plane, and the guide roller (5) is arranged close to the bottom wall (31).

8. The automatic slurry stirring device according to claim 6, wherein The guide roller (5) is arranged close to the running direction of the battery pole piece (1).

9. The automatic slurry stirring device according to claim 7, wherein The interval distance between the guide roller (5) and the bottom wall (31) corresponds to the thickness of the battery pole piece (1), and the guide roller (5) is spaced from the first stirring roller (41) and the second stirring roller (42) to facilitate the passage of the battery pole piece (1).

10. The automatic slurry stirring device according to claim 6, wherein A plurality of mounting holes (32) for mounting the first stirring roller (41), the second stirring roller (42) and the guide roller (5) are arranged on the slurry tank (3).

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