Lithium ion battery pole piece pulping machine

Abstract

The invention discloses a lithium ion battery pole piece pulping machine which comprises a mixing tank, the upper side wall and the lower side wall of the mixing tank are connected with two feeding hoppers and a discharging pipe respectively, the lower side wall of the mixing tank is connected with a plurality of supporting pads, and a buffering mechanism is arranged between each supporting pad and the mixing tank. The front wall of the mixing tank is fixedly connected with a rectangular cover, the front wall of the rectangular cover is fixedly connected with a motor, and the tail end of an output shaft of the motor penetrates through the front wall of the rectangular cover and is fixedly connected with a driving shaft. According to the invention, the lower ports of the two feeding hoppers are intermittently opened and closed through the material blocking plate, so that a binding solvent and powdery positive and negative active substances can be prevented from directly entering the mixing tank, and the mixing difficulty of the binding solvent and the powdery positive and negative active substances is reduced; and meanwhile, through reciprocating rotation of each stirring rod I and each stirring rod II in the mixing tank, the solution in the mixing tank can be fully and uniformly mixed, so that the pulping efficiency of the lithium ion battery pole piece is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion battery pole piece pulping, and in particular to a lithium ion battery pole piece pulping machine. Background Art

[0002] Lithium-ion battery is a secondary battery that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. During the charge and discharge process, Li+ is embedded and de-embedded between the two electrodes: during charging, Li+ is de-embedded from the positive electrode and embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state. During discharge, the opposite is true. When making lithium-ion battery electrodes, pulping is an important step. Pulping uses a special bonding solvent to mix with powdered positive and negative active materials respectively. However, the existing pulping device does not stir evenly enough, and the pulping machine will produce large vibrations during stirring, resulting in poor stability of the device. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to propose a lithium-ion battery pole piece pulping machine.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A lithium-ion battery pole piece pulping machine comprises a mixing tank, the upper side wall and the lower side wall of the mixing tank are respectively connected to two feeding hoppers and a discharging pipe, the lower side wall of the mixing tank is connected to a plurality of support pads, a buffer mechanism is provided between each of the support pads and the mixing tank, the front wall of the mixing tank is fixedly connected to a rectangular cover, the front wall of the rectangular cover is fixedly connected to a motor, the end of the output shaft of the motor passes through the front wall of the rectangular cover and is fixedly connected to a driving shaft, an outer wall movable sleeve of an end of the driving shaft away from the motor is provided with a stirring shaft 1 passing through the front wall of the mixing tank, a reciprocating mechanism is provided between the stirring shaft 1 and the driving shaft, an end of the stirring shaft 1 located in the mixing tank is fixedly connected to a bevel gear 1, a plurality of stirring rods 1 are fixedly connected to the outer wall of the bevel gear 1, and a bevel gear 2 is meshed below the bevel gear 1, the lower side wall of the bevel gear 2 is fixedly connected to a stirring shaft 2, the outer wall of the stirring shaft 2 is fixedly connected to a plurality of stirring rods 2, and the outer wall movable sleeve of the stirring shaft is provided with two fixed rods fixedly connected in the mixing tank.

[0006] Preferably, the reciprocating mechanism includes an incomplete gear fixedly sleeved on the outer wall of the driving shaft, the outer side of the incomplete gear is meshed with a rectangular frame slidably fitted on the inner wall of the rectangular cover, the inner top wall and the inner bottom wall of the rectangular frame are both equipped with a tooth plate 1 meshed with the incomplete gear, the outer wall of the stirring shaft 1 is fixedly sleeved with a moving gear, and the upper side of the moving gear is meshed with a tooth plate 2 fixedly connected to the rear wall of the rectangular frame.

[0007] Preferably, the buffer mechanism comprises a telescopic rod fixedly connected between the support pad and the mixing tank, a buffer spring is commonly connected between the telescopic rod and the mixing tank, and a damper is installed in the telescopic rod.

[0008] Preferably, the upper side wall of the bevel gear 1 is fixedly connected with a fixing rod, and the upper end of the fixing rod is fixedly connected with a material blocking plate which is slidably fitted on the top wall of the mixing tank and is located at the lower ports of the two feeding hoppers.

[0009] Preferably, the lower end of the second stirring rod extends into the discharge pipe and is fixedly connected with a stirring paddle.

[0010] Preferably, the outer wall of each stirring rod is fixedly connected to a plurality of stirring rods.

[0011] Preferably, one end of each stirring rod away from the bevel gear is fixedly connected to a cleaning plate which is slidably fitted on the inner wall of the mixing tank.

[0012] Preferably, the middle part of each of the fixing rods is movably penetrated by an I-shaped sleeve fixedly mounted on the two outer walls of the stirring shaft.

[0013] Preferably, both side walls of the rectangular frame are fixedly connected with support rods, and the opposite ends of the two support rods are fixedly connected with ball blocks.

[0014] Compared with the existing technology, the advantages of this lithium-ion battery pole piece pulping machine are:

[0015] 1. The motor drives the driving shaft to rotate the incomplete gear, and then the incomplete gear is intermittently meshed with the tooth plate 1 on the top wall and the bottom wall of the rectangular frame, respectively, to drive the rectangular frame to move back and forth, so that the tooth plate 2 can drive the driving gear to rotate back and forth, so that the stirring shaft drives the bevel gear 1 and each stirring rod 1 to rotate back and forth, and the bonding solvent and the powder in the mixing tank are stirred back and forth to make them evenly mixed, thereby improving the mixing effect of the bonding solvent and the powdered positive and negative active materials;

[0016] 2. When the bevel gear reciprocates, the material blocking plate can also be driven to reciprocate through the fixed frame, so that the lower ports of the two feeding hoppers can be intermittently opened in a staggered manner, preventing the bonding solvent and the powdered positive and negative active materials from directly entering the mixing tank, thereby reducing the difficulty of mixing the bonding solvent and the powdered positive and negative active materials;

[0017] 3. Bevel gear 1 can also drive each cleaning plate to move back and forth along the inner wall of the mixing tank, so as to scrape off the attachments on the inner wall of the mixing tank to prevent adhesion;

[0018] 4. When the rectangular frame moves back and forth left and right, the two support rods can also drive the two balls to intermittently hit the inner walls of the two sides of the rectangular cover, thereby causing the inner wall of the mixing tank to vibrate, and the adhesion on the inner wall of the mixing tank can be shaken off, and it can be fully stirred, thereby improving the utilization rate of the raw materials.

[0019] In summary, the present invention can prevent the bonding solvent and powdered positive and negative electrode active materials from directly entering the mixing tank through the intermittent opening and closing of the lower ports of the two feeding hoppers by the material blocking plate, thereby reducing the difficulty of mixing the bonding solvent and the powdered positive and negative electrode active materials. At the same time, through the reciprocating rotation of each stirring rod one and each stirring rod two in the mixing tank, the solution in the mixing tank can be fully and evenly mixed, thereby improving the pulping efficiency of lithium-ion battery electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a lithium-ion battery pole piece pulping machine proposed by the present invention;

[0021] Figure 2 A schematic structural diagram of a partial cross section of a lithium-ion battery pole piece pulping machine proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the external structure of a lithium-ion battery pole piece pulping machine proposed by the present invention;

[0023] Figure 4 A side cross-sectional view of the connection between an incomplete gear and a gear in a lithium-ion battery pole piece pulping machine proposed by the present invention;

[0024] Figure 5 for Figure 2 A is an enlarged view of the structure;

[0025] Figure 6 The present invention provides a schematic diagram of the three-dimensional structure of a connection between a cleaning plate and a stirring rod in a lithium-ion battery pole piece pulping machine.

[0026] In the figure: 1 mixing tank, 2 feeding hopper, 3 discharging pipe, 4 supporting pad, 5 rectangular cover, 6 motor, 7 driving shaft, 8 stirring shaft one, 9 bevel gear one, 10 stirring rod one, 11 stirring rod two, 12 stirring shaft two, 13 fixed rod, 14 incomplete gear, 15 rectangular frame, 16 moving gear, 17 tooth plate two, 18 telescopic rod, 19 buffer spring, 20 damper, 21 fixed frame, 22 material blocking plate, 23 stirring paddle, 24 stirring rod, 25 cleaning plate, 26 I-shaped sleeve, 27 support rod, 28 ball block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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, and therefore cannot be understood as a limitation on the present invention.

[0029] Reference Figure 1-6 A lithium-ion battery pole piece pulping machine comprises a mixing tank 1, the upper side wall and the lower side wall of the mixing tank 1 are respectively connected to two feeding hoppers 2 and a discharge pipe 3, the lower side wall of the mixing tank 1 is connected to a plurality of support pads 4, a buffer mechanism is provided between each support pad 4 and the mixing tank 1, the buffer mechanism comprises a telescopic rod 18 fixedly connected between the support pad 4 and the mixing tank 1, a buffer spring 19 is commonly connected between the telescopic rod 18 and the mixing tank 1, and a damper 20 is installed in the telescopic rod 18, when the device generates vibration during pulping, the telescopic rod 18 can be compressed and the buffer spring 19 can be squeezed, and then the reaction force of the buffer spring 19 and the resistance of the damper 20 to the telescopic rod 18 can be used to achieve a buffering effect on the mixing tank 1, effectively reducing the vibration amplitude of the device, so that the device can be more stable during stirring and pulping.

[0030] The front wall of the mixing tank 1 is fixedly connected to a rectangular cover 5, and the front wall of the rectangular cover 5 is fixedly connected to a motor 6. The end of the output shaft of the motor 6 passes through the front wall of the rectangular cover 6 and is fixedly connected to a driving shaft 7. The outer wall of the end of the driving shaft 7 away from the motor 6 is movably sleeved with a stirring shaft 8 that passes through the front wall of the mixing tank 1. A reciprocating mechanism is provided between the stirring shaft 8 and the driving shaft 7. The reciprocating mechanism includes an incomplete gear 14 fixedly sleeved on the outer wall of the driving shaft 7. The outer side of the incomplete gear 14 is meshed with a rectangular frame 15 that is slidably fitted on the inner wall of the rectangular cover 5. The inner top wall and the inner bottom wall of the rectangular frame 15 are both equipped with a toothed plate meshed with the incomplete gear 14. The outer wall of the stirring shaft 8 is fixedly sleeved with a There is a movable gear 16, and the upper side of the movable gear 16 is meshed with a tooth plate 2 17 fixedly connected to the rear wall of the rectangular frame 15. The motor 6 is started to make the driving shaft 7 drive the incomplete gear 14 to rotate, and then the incomplete gear 14 is intermittently meshed with the tooth plates 1 on the inner top wall and the inner bottom wall of the rectangular frame 15, respectively, to drive the rectangular frame 15 to move back and forth, so that the movable gear 16 can be driven to rotate back and forth through the tooth plate 2 17, so that the stirring shaft 8 drives the bevel gear 9 and each stirring rod 10 to rotate back and forth, and the binding solvent and the powder in the mixing tank 1 are stirred back and forth to make them evenly mixed, thereby improving the mixing effect of the binding solvent and the powdered positive and negative active materials.

[0031] One end of the stirring shaft 8 located in the mixing tank 1 is fixedly connected to a bevel gear 9, and the upper side wall of the bevel gear 9 is fixedly connected to a fixing frame 21, and the upper end of the fixing frame 21 is fixedly connected to a material blocking plate 22 that is slidably fitted on the top wall of the mixing tank 1 and located at the lower ports of the two feeding hoppers 2. When the bevel gear 9 rotates back and forth, the material blocking plate 22 can also be driven to move back and forth through the fixing frame 21, so that the lower ports of the two feeding hoppers 2 can be intermittently staggered and opened, so that the bonding solvent and the powdered positive and negative active substances can slowly enter the mixing tank 1 in batches, avoiding the bonding solvent and the powdered positive and negative active substances from directly entering the mixing tank 1, thereby reducing the difficulty of mixing the bonding solvent and the powdered positive and negative active substances.

[0032] The outer wall of the bevel gear 9 is fixedly connected to a plurality of stirring rods 10, and the outer wall of each stirring rod 10 is fixedly connected to a plurality of stirring rods 24. The end of each stirring rod 10 away from the bevel gear 9 is fixedly connected to a cleaning plate 25 that slides and fits on the inner wall of the mixing tank 1. The bevel gear 9 can also drive each cleaning plate 25 to move back and forth along the inner wall of the mixing tank 1, so as to scrape off the attachments on the inner wall of the mixing tank 1 to prevent adhesion.

[0033] A bevel gear 2 is meshed below the bevel gear 19, and a stirring shaft 2 12 is fixedly connected to the lower side wall of the bevel gear 2. An I-shaped sleeve 26 fixedly sleeved on the outer wall of the stirring shaft 2 12 is movably penetrated through the middle part of each fixed rod 13, and a plurality of stirring rods 2 11 are fixedly connected to the outer wall of the stirring shaft 2 12, and the outer wall of the stirring shaft 2 12 is movably sleeved with two fixed rods 13 fixedly connected to the mixing tank 1. When the bevel gear 19 reciprocates, the meshing with the bevel gear 2 makes the stirring shaft 2 12 also drive each stirring rod 2 11 to reciprocate synchronously, thereby greatly increasing the fluidity of the solution in the mixing tank 1, thereby greatly improving the pulping efficiency of the lithium-ion battery pole pieces.

[0034] Furthermore, the lower end of the stirring shaft 12 extends into the discharge pipe 3 and is fixedly connected with a stirring paddle 23. The stirring shaft 12 can drive the stirring paddle 23 to rotate in the discharge pipe 3 to prevent the solution from being blocked in the discharge pipe 3 when being discharged.

[0035] Furthermore, both side walls of the rectangular frame 15 are fixedly connected with support rods 27, and the opposite ends of the two support rods 27 are fixedly connected with ball blocks 28. When the rectangular frame 15 moves back and forth left and right, the two support rods 27 can also drive the two ball blocks 28 to intermittently hit the inner walls of the two sides of the rectangular cover 5, thereby causing the inner wall of the mixing tank 1 to vibrate, and the adhesion on the inner wall of the mixing tank 1 can be shaken off and fully stirred, thereby improving the utilization rate of the raw materials.

[0036] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium-ion battery pole piece pulping machine, comprising a mixing tank (1), characterized in that: The upper side wall and the lower side wall of the mixing tank (1) are respectively connected to two feeding hoppers (2) and a discharge pipe (3); the lower side wall of the mixing tank (1) is connected to a plurality of support pads (4); a buffer mechanism is provided between each of the support pads (4) and the mixing tank (1); the front wall of the mixing tank (1) is fixedly connected to a rectangular cover (5); the front wall of the rectangular cover (5) is fixedly connected to a motor (6); the output shaft end of the motor (6) passes through the front wall of the rectangular cover (6) and is fixedly connected to a drive shaft (7); the outer wall of the drive shaft (7) at one end away from the motor (6) is provided with a movable sleeve which passes through the front wall of the mixing tank (1) A stirring shaft (8), a reciprocating mechanism is provided between the stirring shaft (8) and the driving shaft (7), one end of the stirring shaft (8) located in the mixing tank (1) is fixedly connected to a bevel gear (9), the outer wall of the bevel gear (9) is fixedly connected to a plurality of stirring rods (10), and a bevel gear (2) is meshed below the bevel gear (9), the lower side wall of the bevel gear (2) is fixedly connected to a stirring shaft (12), the outer wall of the stirring shaft (12) is fixedly connected to a plurality of stirring rods (11), and the outer wall of the stirring shaft (12) is movably sleeved with two fixed rods (13) fixedly connected to the mixing tank (1).

2. A lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: The reciprocating mechanism comprises an incomplete gear (14) fixedly sleeved on the outer wall of the driving shaft (7); the outer side of the incomplete gear (14) is meshed with a rectangular frame (15) slidably fitted on the inner wall of the rectangular cover (5); the inner top wall and the inner bottom wall of the rectangular frame (15) are both provided with a tooth plate 1 meshed with the incomplete gear (14); the outer wall of the stirring shaft 1 (8) is fixedly sleeved with a moving gear (16); the upper side of the moving gear (16) is meshed with a tooth plate 2 (17) fixedly connected to the rear wall of the rectangular frame (15).

3. A lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: The buffer mechanism comprises a telescopic rod (18) fixedly connected between a support pad (4) and a mixing tank (1), a buffer spring (19) being commonly connected between the telescopic rod (18) and the mixing tank (1), and a damper (20) being installed in the telescopic rod (18).

4. A lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: The upper side wall of the bevel gear 1 (9) is fixedly connected to a fixing frame (21), and the upper end of the fixing frame (21) is fixedly connected to a material blocking plate (22) which is slidably fitted on the inner top wall of the mixing tank (1) and is located at the lower ports of the two feeding hoppers (2).

5. The lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: The lower end of the second stirring shaft (12) extends into the discharge pipe (3) and is fixedly connected with a stirring paddle (23).

6. A lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: The outer wall of each stirring rod (10) is fixedly connected to a plurality of stirring rods (24).

7. A lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: One end of each stirring rod (10) away from the bevel gear (9) is fixedly connected to a cleaning plate (25) which is slidably fitted on the inner wall of the mixing tank (1).

8. The lithium-ion battery pole piece pulping machine according to claim 1, characterized in that: The middle part of each fixed rod (13) is movably penetrated by an I-shaped sleeve (26) fixedly sleeved on the outer wall of the second stirring shaft (12).

9. A lithium-ion battery pole piece pulping machine according to claim 2, characterized in that: The side walls on both sides of the rectangular frame (15) are fixedly connected with support rods (27), and the opposite ends of the two support rods (27) are fixedly connected with ball blocks (28).

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