Impurity removal device for processing lithium battery negative electrode material

Abstract

The utility model belongs to the technical field of battery material processing, and particularly discloses an impurity removal device for lithium battery cathode material processing, which comprises a base, lower shafts are fixedly connected to two sides of the base, rubber swing strips are rotatably connected to the outer surfaces of the lower shafts, upper shafts are rotatably connected to the tops of the rubber swing strips, and the upper shafts are rotatably connected with lower shafts. A filtering box is fixedly connected to the inner side of the upper shaft, filtering holes are formed in the bottom of the filtering box, a magnetic attraction mechanism is arranged on the filtering box, and a back-swinging mechanism for driving the filtering box is arranged on the base. According to the impurity removal device for processing the lithium battery negative electrode material, impurity removal and filtration are carried out on the lithium battery negative electrode material in the vibration process of the filter box through the backswing mechanism, magnetic adsorption of the floating iron powder is realized through combination of the arrangement of a magnet sheet and the floating iron powder in the vibration process, and the iron powder can be effectively removed from the negative electrode material; the filtering effect is improved, and meanwhile, the cleaning and maintenance processes are also convenient.

Description

Technical Field

[0001] The present application relates to the technical field of battery material processing, and in particular to an impurity removal device for processing negative electrode materials of lithium batteries. Background Art

[0002] The traditional negative electrode material of lithium-ion batteries is mainly graphite, which has good conductivity and cycle stability. By removing impurities from the negative electrode material of lithium batteries, the presence of impurities in the material can be reduced, the conductivity of the material can be improved, and the performance of the battery can be improved.

[0003] At present, in the process of removing impurities from the negative electrode materials of lithium batteries, the materials are mostly filtered directly through an inclined filter screen. In the process of filtering impurities, since impurities such as iron filings and iron powder may exist in the negative electrode materials, the iron powder is easy to float in the air during the screening and impurity removal process, and it is difficult to filter it out effectively, resulting in incomplete impurity removal. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the shortcomings existing in the background technology, and to propose a de-impurity device for processing lithium battery negative electrode materials to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the utility model provides an impurity removal device for processing lithium battery negative electrode materials, including a base, both sides of the base are fixedly connected with a lower shaft, the outer surface of the lower shaft is rotatably connected with a rubber swing bar, the top of the rubber swing bar is rotatably connected with an upper shaft, the inner side of the upper shaft is fixedly connected with a filter box, the bottom of the filter box is provided with a filter hole, the filter box is provided with a magnetic attraction mechanism, and the base is provided with a swing mechanism for driving the filter box.

[0006] Preferably, the magnetic attraction mechanism comprises a magnet sheet movably connected to the top of the filter box, and a rubber pad is provided at the end of the magnet sheet. The magnetic attraction mechanism can adsorb and remove iron powder impurities in the negative electrode material of the lithium battery.

[0007] Preferably, a guide frame is fixedly connected to the bottom of the filter box, and a chip discharge opening is provided at the inclined bottom end of the guide frame.

[0008] Preferably, the swing mechanism includes a motor fixedly mounted on the outer surface of the base, and the output end of the motor is fixedly connected to a drive shaft. The swing mechanism can make the filter box vibrate back and forth, thereby filtering out impurities in the negative electrode material during the screening process.

[0009] Preferably, an eccentric wheel is fixedly connected to one end of the driving shaft away from the motor, and a guide shaft is fixedly connected to the outer surface of the eccentric wheel.

[0010] Preferably, the outer surface of the guide shaft is rotatably connected to a driving connecting rod, the filter box is fixedly connected to a cam frame on one side close to the driving connecting rod, and the outer surface of the cam frame is rotatably connected to an end of the driving connecting rod away from the guide shaft.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The impurity removal device for processing negative electrode materials of lithium batteries uses a swing mechanism to remove impurities and filter the negative electrode materials of lithium batteries during the vibration of the filter box. The arrangement of the magnet sheet and the floating iron powder during the vibration process are combined to achieve magnetic adsorption of the floating iron powder, which helps to effectively remove the iron powder from the negative electrode material, improve the filtering effect, and also facilitate the cleaning and maintenance process.

[0013] 2. The impurity removal device for processing negative electrode materials of lithium batteries has a flip magnet sheet design that makes the cleaning process more convenient. The operator can easily remove the magnet sheet, scrape off the adsorbed iron powder, and then flip it over for reuse. This design simplifies the maintenance process, reduces downtime, and effectively improves the cleaning effect of iron powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the structure of the device of the present application from another perspective;

[0016] Figure 3 This is a schematic diagram of the filter box structure for this application;

[0017] Figure 4 This is a schematic diagram of the surface structure of the magnet sheet of this application;

[0018] Figure 5 This is a schematic diagram of the eccentric wheel surface structure of this application.

[0019] Among them: 1. Base; 2. Lower shaft; 3. Rubber swing bar; 4. Upper shaft; 5. Filter box; 6. Filter hole; 7. Magnet sheet; 8. Rubber pad; 9. Guide frame; 10. Chip discharge port; 11. Motor; 12. Drive shaft; 13. Eccentric wheel; 14. Guide shaft; 15. Drive connecting rod; 16. Cam bracket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] See also Figure 1-5 A de-impurity device for processing negative electrode materials of lithium batteries comprises a base 1, both sides of the base 1 are fixedly connected with a lower shaft 2, the outer surface of the lower shaft 2 is rotatably connected with a rubber swing bar 3, the top of the rubber swing bar 3 is rotatably connected with an upper shaft 4, the inner side of the upper shaft 4 is fixedly connected with a filter box 5, the bottom of the filter box 5 is provided with a filter hole 6, the filter box 5 is provided with a magnetic attraction mechanism, and the base 1 is provided with a swing mechanism for driving the filter box 5.

[0022] Through the above technical solution, when the device is in use, the negative electrode material of the lithium battery is put into the filter box 5. The filter box 5 can filter out impurities in the negative electrode material during the back and forth vibration through the swing mechanism. The iron powder impurities stirred up in the filter box 5 can be adsorbed in conjunction with the swing mechanism, thereby effectively cleaning the iron powder impurities in the material.

[0023] Specifically, the magnetic attraction mechanism includes a magnet sheet 7 movably connected to the top of the filter box 5 , and a rubber pad 8 is provided at the end of the magnet sheet 7 .

[0024] Through the above technical solution, the rubber pads 8 are arranged at both ends of the magnet sheet 7 , which enables the magnet sheet 7 to be relatively tightly embedded in the filter box 5 .

[0025] Specifically, a guide frame 9 is fixedly connected to the bottom of the filter box 5 , and a chip discharge opening 10 is provided at the inclined bottom end of the guide frame 9 .

[0026] Through the above technical solution, after the impurities are filtered through the filter holes 6 and fall into the guide frame 9 , they can slide along the filter holes 6 and finally be discharged and collected from the chip discharge port 10 .

[0027] Specifically, the swing mechanism includes a motor 11 fixedly mounted on the outer surface of the base 1 , and the output end of the motor 11 is fixedly connected to the driving shaft 12 .

[0028] Through the above technical solution, the motor 11 can drive the driving shaft 12 to rotate after starting, and then link the eccentric wheel 13 to rotate.

[0029] Specifically, an eccentric wheel 13 is fixedly connected to one end of the driving shaft 12 away from the motor 11 , and a guide shaft 14 is fixedly connected to the outer surface of the eccentric wheel 13 .

[0030] Through the above technical solution, the guide shaft 14 is arranged at the portion of the eccentric wheel 13 protruding outward, so as to better allow the driving connecting rod 15 to swing during the rotation process.

[0031] Specifically, the outer surface of the guide shaft 14 is rotatably connected to the driving connecting rod 15, and the side of the filter box 5 close to the driving connecting rod 15 is fixedly connected to the cam frame 16, and the outer surface of the cam frame 16 is rotatably connected to the end of the driving connecting rod 15 away from the guide shaft 14.

[0032] Through the above technical solution, the driving connecting rod 15 can be pushed laterally by an end distance during the process of rotating along the cam frame 16, and cooperate with the rubber swing bar 3 to make the filter box 5 vibrate back and forth.

[0033] Working principle: When the device is in use, first put the negative electrode material of the lithium battery into the filter box 5, and insert the magnet sheet 7 into the depression on the top of the filter box 5. The rubber pad 8 can make the magnet sheet 7 stuck tightly, and then turn on the motor 11 to drive the drive shaft 12 to rotate. The drive shaft 12 will drive the guide shaft 14 to make a circular motion during the rotation. During this process, the driving connecting rod 15 will rotate along the guide shaft 14, and the other end of the driving connecting rod 15 will rotate along the cam frame 16, and the filter box 5 will be driven by the cam frame 16. After the filter box 5 is driven, the rubber swing bar 3 will rotate along the lower shaft 2 and the upper shaft 4 at the same time, and the rubber swing bar 3 will make the filter box 5 swing back and forth through the upper shaft 4, and finally make The entire filter box 5 is in a back-and-forth vibrating state, and the negative electrode material of the lithium battery can be filtered during the vibration of the filter box 5, so that after the negative electrode material is filtered through the filter hole 6, impurities such as iron filings are filtered out. At this time, the impurities will fall into the guide frame 9 and finally slide out from the chip discharge port 10 for collection. During the vibration filtering and impurity removal process of the filter box 5, the iron powder will be in a floating state in the filter box 5. At this time, the magnet sheet 7 can magnetically adsorb the floating iron powder, so that the iron powder is adsorbed on the surface of the magnet sheet 7, and the magnet sheet 7 can be removed to scrape off the adsorbed iron powder, and then the magnet sheet 7 can be turned over to allow the other side of the magnet sheet 7 to adsorb the iron powder, thereby effectively removing the iron powder impurities and improving the impurity removal effect on the negative electrode material of the lithium battery.

[0034] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for removing impurities from negative electrode materials for lithium batteries, comprising a base (1), characterized in that: The base (1) is fixedly connected to a lower shaft (2) on both sides, the outer surface of the lower shaft (2) is rotatably connected to a rubber swing bar (3), the top of the rubber swing bar (3) is rotatably connected to an upper shaft (4), the inner side of the upper shaft (4) is fixedly connected to a filter box (5), a filter hole (6) is provided at the bottom of the filter box (5), a magnetic attraction mechanism is provided on the filter box (5), and a swing mechanism for driving the filter box (5) is provided on the base (1).

2. The impurity removal device for processing negative electrode materials of lithium batteries according to claim 1, characterized in that: The magnetic attraction mechanism comprises a magnet sheet (7) movably clamped on the top of the filter box (5), and a rubber pad (8) is arranged at the end of the magnet sheet (7).

3. The impurity removal device for processing negative electrode materials of lithium batteries according to claim 1, characterized in that: A guide frame (9) is fixedly connected to the bottom of the filter box (5), and a chip discharge opening (10) is provided at the inclined bottom end of the guide frame (9).

4. The impurity removal device for processing negative electrode materials of lithium batteries according to claim 1, characterized in that: The swing mechanism comprises a motor (11) fixedly mounted on the outer surface of a base (1), and an output end of the motor (11) is fixedly connected to a drive shaft (12).

5. The impurity removal device for processing negative electrode materials of lithium batteries according to claim 4, characterized in that: An eccentric wheel (13) is fixedly connected to one end of the drive shaft (12) away from the motor (11), and a guide shaft (14) is fixedly connected to the outer surface of the eccentric wheel (13).

6. The impurity removal device for processing negative electrode materials of lithium batteries according to claim 5, characterized in that: The outer surface of the guide shaft (14) is rotatably connected to a driving connecting rod (15), and a cam frame (16) is fixedly connected to a side of the filter box (5) close to the driving connecting rod (15), and the outer surface of the cam frame (16) is rotatably connected to an end of the driving connecting rod (15) away from the guide shaft (14).

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