Uniform rolling equipment for lithium battery pole piece

Abstract

The utility model relates to the technical field of lithium battery pole piece processing, in particular to uniform rolling equipment for a lithium battery pole piece, which comprises a base, and a rolling part is mounted on the front side of the top of the base; a cleaning part is mounted on the rear side of the top of the base; through the arrangement of the first compression roller and the second compression roller, the lithium battery pole pieces can be conveniently rolled, and the height of the second compression roller can be conveniently adjusted through the movement of the piston rod of the electric cylinder, so that the lithium battery pole pieces with different thicknesses can be rolled, and the processing requirements of the lithium battery pole pieces are met; when a lithium battery pole piece passes through the space between the two shells, dust and other impurities adhered to the pole piece can be continuously adsorbed by the dust collection holes, the dust and the like enter the box body under the action of suction force and are intercepted and filtered by the plurality of dust filtering nets, and the lithium battery pole piece subjected to dust removal can be subjected to rolling treatment; according to the design, the problem that the subsequent processing quality is affected due to the fact that dust and other impurities adhere to the lithium battery pole piece can be solved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery electrode processing technology, specifically to a uniform rolling equipment for lithium battery electrodes. Background Technology

[0002] In the production process of lithium batteries, the preparation of electrode sheets is one of the core links, and the rolling technology of lithium battery electrode sheets is a crucial process. The rolling process mainly uses a rolling mill to compact the coated electrode sheets. By compacting the electrode sheets, the contact between particles in the electrode is improved, the bonding force between the active material and the foil is increased, thereby improving the energy density and cycle stability of the battery.

[0003] Utility model patent with authorization announcement number CN220155563U discloses a battery electrode rolling mechanism. The battery electrode rolling mechanism includes a base plate, on which a drying box and a support frame are provided. The support frame has a connecting through hole and a lifting hole. Sliding grooves are provided on both sides of the lifting hole. A threaded rod is installed in the lifting hole. A threaded cylinder is fitted on the outside of the threaded rod. A bevel gear is provided at the top of the threaded cylinder. A fixed cylinder is fitted on the outside of the threaded cylinder. Slider blocks are provided at both ends of the fixed cylinder. A pressure roller is rotatably provided at the bottom end of the fixed cylinder. This roller pressing mechanism uses a bevel gear and a rotating threaded cylinder to move the threaded cylinder up and down on the upper threaded rod instead of rotating the threaded rod itself. This makes the nut's movement smoother, reducing errors in the transmission process and improving position control accuracy. Furthermore, this method not only eliminates the impact of backlash on position control accuracy but also allows for rapid adjustment of the gap, enabling faster and more precise control of the distance between the pressure roller and the drive roller. Moreover, the continuous force of the springs on the pressure plate and ball bearings acts on the pressure roller, preventing uneven force distribution between the ends and the middle of the pressure roller during electrode extrusion. This ensures that the extruded electrodes maintain the same thickness, thereby improving the yield of battery electrodes.

[0004] Although the battery electrode rolling mechanism can improve the yield of battery electrodes, the device still has the following problems in actual use: during the processing of the electrode, dust and other impurities will inevitably adhere to it. When the pressure roller presses the electrode, the dust and other impurities adhering to the electrode surface will seriously affect the rolling quality of the electrode. In view of this, we propose a uniform rolling device for lithium battery electrodes. Utility Model Content

[0005] The purpose of this invention is to provide a uniform rolling device for lithium battery electrodes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A uniform rolling device for lithium battery electrode sheets includes a base, a rolling section mounted on the top front side of the base, and two symmetrical side plates fixed to the base. A notch is provided in each side plate. A first pressure roller is rotatably mounted above the two side plates. A first motor for driving the first pressure roller is mounted on the outer wall of each side plate. A movable block that can be raised and lowered is slidably mounted at the notch. A second pressure roller is rotatably mounted between the two movable blocks. A second motor for driving the second pressure roller is mounted on the outer wall of one of the movable blocks. Two connecting blocks are also fixed to the outer wall of the movable blocks. An electric cylinder for driving the connecting blocks and the movable blocks to rise and fall is mounted below one side of each side plate.

[0008] A cleaning section is installed on the top rear side of the base. The cleaning section consists of two symmetrical, hollow shells. Multiple dust suction holes are opened on the two opposite end faces of the two shells. Two straight pipes are installed on both sides of the shells, and connecting pipes are installed between the straight pipes and the shells. A hollow box is also fixed on the top rear side of the base. The box is connected to the straight pipes. Two fans are installed on the front face of the box. Two mounting slots are opened on the rear face of the box. A flip-up flap is installed in the mounting slot. Two hinges are installed at the connection between one end of the flap and the box. A detachable fixing frame is installed inside the box near both ends. A dust filter is fixed at the opening of the fixing frame.

[0009] Preferably, the upper and lower walls of the fixing frame are fixed with inserts, and the inner cavity of the box is provided with multiple slots at the upper and lower walls, and the inserts are inserted into the corresponding slots.

[0010] Preferably, two support plates are installed on the top of the box, and the upper and lower ends of the support plates are fixedly connected to the box and the shell by bolts.

[0011] Preferably, two guide rods are fixedly connected within the notch by bolts, and the guide rods pass through the movable block and are slidably connected to the movable block.

[0012] Preferably, a support plate is fixedly connected to the bottom of the outer wall of the side plate by bolts, and the electric cylinder is fixedly connected to the support plate by bolts.

[0013] Preferably, the cross-sectional shape of the suction hole is circular, and the multiple suction holes are distributed in a matrix.

[0014] Preferably, the inner wall of the box is fixed with mounting blocks at the edge of the mounting groove, and the outer wall of the flap is provided with connecting bolts, which are threadedly connected to the mounting blocks.

[0015] Preferably, the outer wall of the flap is fixedly connected to a handle by bolts, and the handle has a U-shaped cross-section.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The set roller pressing section: The set first and second pressure rollers facilitate the roller pressing process of lithium battery electrode sheets. The height of the second pressure roller can be easily adjusted by the movement of the electric cylinder piston rod, so as to roll pressing process lithium battery electrode sheets of different thicknesses and meet the processing requirements of lithium battery electrode sheets.

[0018] 2. The cleaning section is designed so that when the lithium battery electrode passes between the two housings, the suction holes continuously adsorb dust and other impurities adhering to the electrode. Under the action of suction, the dust and other impurities enter the housing and are intercepted and filtered by multiple dust filters. The lithium battery electrode after dust removal can then undergo roll forming. This design can prevent the lithium battery electrode from being affected by dust and other impurities, thus ensuring the quality of subsequent processing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the roller pressing section in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the second pressure roller in this utility model;

[0022] Figure 4 This is a schematic diagram of the cleaning part in this utility model;

[0023] Figure 5 This is an exploded structural diagram of the cleaning section in this utility model;

[0024] In the picture:

[0025] 1. Base;

[0026] 2. Roller pressing section; 20. Side plate; 200. Notch; 201. Guide rod; 202. Support plate; 21. First pressure roller; 22. First motor; 23. Electric cylinder; 24. Movable block; 240. Connecting block; 25. Second pressure roller; 26. Second motor;

[0027] 3. Cleaning section; 30. Housing; 300. Suction hole; 31. Straight pipe; 310. Connecting pipe; 32. Support plate; 33. Box body; 330. Mounting groove; 331. Mounting block; 332. Slot; 34. Fan; 35. Fixing bracket; 350. Insert strip; 351. Dust filter; 36. Flip plate; 360. Connecting bolt; 37. Handle; 38. Hinge. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This embodiment provides a technical solution:

[0030] Please see Figures 1-5 As shown, a uniform rolling device for lithium battery electrode sheets includes a base 1. A rolling section 2 is installed on the top front side of the base 1. The rolling section 2 includes two symmetrical side plates 20 fixed to the base 1. A notch 200 is opened at the side plates 20. A first pressure roller 21 is rotatably installed above the two side plates 20. A first motor 22 for driving the first pressure roller 21 to rotate is installed on the outer wall of the side plates 20. A movable block 24 that can be raised and lowered is slidably installed at the notch 200. A second pressure roller 25 is rotatably installed between the two movable blocks 24. A second motor 26 for driving the second pressure roller 25 to rotate is installed on the outer wall of one of the movable blocks 24. Two connecting blocks 240 are also fixed to the outer wall of the movable blocks 24. An electric cylinder 23 for driving the connecting blocks 240 and the movable blocks 24 to rise and fall is installed below one side of the side plates 20. The base 1 A cleaning section 3 is installed at the top rear side. The cleaning section 3 includes two symmetrical and hollow shells 30. Multiple dust suction holes 300 are opened on the two opposite end faces of the two shells 30. Two straight pipes 31 are installed on both sides of the shells 30. Connecting pipes 310 are installed between the straight pipes 31 and the shells 30. A hollow box 33 is also fixed at the top rear side of the base 1. The box 33 is connected to the straight pipes 31. Two fans 34 are installed on the front face of the box 33. Two mounting slots 330 are opened on the rear face of the box 33. A flip-up flap 36 is installed in the mounting slot 330. Two hinges 38 are installed at the connection between one end of the flap 36 and the box 33. A detachable fixing frame 35 is installed inside the box 33 near both ends. A dust filter 351 is fixed at the opening of the fixing frame 35.

[0031] In this embodiment, insert strips 350 are fixed to both the upper and lower walls of the mounting bracket 35, and multiple slots 332 are provided in the inner cavity of the housing 33 at both the upper and lower walls. The insert strips 350 are inserted into the corresponding slots 332. The arrangement of the insert strips 350 and slots 332 improves the ease of assembly and disassembly of the mounting bracket 35, thereby facilitating the cleaning of the dust filter 351 in the later stages.

[0032] In this embodiment, two support plates 32 are installed on the top of the housing 33, and the upper and lower ends of the support plates 32 are fixedly connected to the housing 33 and the shell 30 by bolts. The bolted support plates 32 provide a stable connection between the housing 33 and the shell 30, ensuring the reliable installation between the housing 33 and the shell 30.

[0033] In this embodiment, two guide rods 201 are fixedly connected within the notch 200 by bolts. The guide rods 201 pass through the movable block 24 and are slidably connected to it. The guide rods 201 guide the lifting and lowering of the movable block 24, thereby ensuring the stability and smoothness of the lifting and lowering of the movable block 24.

[0034] In this embodiment, a support plate 202 is fixedly connected to the bottom of the outer wall of the side plate 20 by bolts, and the electric cylinder 23 is fixedly connected to the support plate 202 by bolts. The support plate 202 provides support for the electric cylinder 23, ensuring the reliable installation of the electric cylinder 23.

[0035] In this embodiment, the cross-sectional shape of the suction holes 300 is circular, and the multiple suction holes 300 are distributed in a matrix. The multiple suction holes 300 facilitate better dust removal from the electrode surface.

[0036] In this embodiment, mounting blocks 331 are fixed to the inner wall of the housing 33 at the edge of the mounting groove 330, and connecting bolts 360 are threaded through the outer wall of the flip plate 36, which are connected to the mounting blocks 331. The arrangement of the connecting bolts 360 and the mounting blocks 331 facilitates both fixing the flip plate 36 and opening and closing the flip plate 36, thereby facilitating the disassembly of the fixing frame 35.

[0037] In this embodiment, a handle 37 is fixedly connected to the outer wall of the flap 36 by bolts. The cross-sectional shape of the handle 37 is U-shaped. The U-shaped handle 37 makes it easy to push and pull the flap 36, improving the convenience of operation.

[0038] It should be added that the cross-sectional shape of the fixing frame 35 is U-shaped, and the size of the fixing frame 35 is adapted to the internal cavity size of the box 33. This design facilitates the installation of the fixing frame 35 in the internal cavity of the box 33, thereby facilitating the airflow to be filtered by the dust filter 351.

[0039] Furthermore, in this embodiment, the first pressure roller 21 and the second pressure roller 25 rotate in opposite directions. This design facilitates uniform and comprehensive rolling of the lithium battery electrode sheets, thereby ensuring the rolling effect of the lithium battery electrode sheets.

[0040] It is worth noting that the fan 34, the first motor 22 and the second motor 26 involved in this embodiment are existing conventional technologies, and will not be described in detail here.

[0041] In practical use, the user first connects the power supply to the fan 34, the first motor 22, and the second motor 26. The fan 34, the first motor 22, and the second motor 26 start working. The fan 34 drives the airflow. When the lithium battery electrode passes between the two housings 30, under the action of the airflow, the dust and other particles adhering to the surface of the electrode enter the housing 30 through the dust suction hole 300 and enter the box 33 through the straight pipes 31 on both sides. At this time, the dust-laden gas passes through multiple dust filters 351 in sequence, and the dust and other particles in the airflow are filtered by the dust filters 351. After being dust-removed, the lithium battery electrode enters between the first pressure roller 21 and the second pressure roller 25. At this time, the output shaft of the first motor 22 drives the first pressure roller 21 to rotate, and the output shaft of the second motor 26 drives the second pressure roller 25 to rotate. At this time, the first pressure roller 21 and the second pressure roller 25 can perform roll pressing on the lithium battery electrode.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A uniform rolling device for lithium battery electrode sheets, comprising a base (1), characterized in that: A roller pressing part (2) is installed on the top front side of the base (1). The roller pressing part (2) includes two symmetrical side plates (20) fixed to the base (1). A notch (200) is opened at the side plate (20). A first pressure roller (21) is rotatably installed above the two side plates (20). A first motor (22) for driving the first pressure roller (21) to rotate is installed on the outer wall of the side plate (20). A movable block (24) that can be raised and lowered is slidably installed at the notch (200). A second pressure roller (25) is rotatably installed between the two movable blocks (24). A second motor (26) for driving the second pressure roller (25) to rotate is installed on the outer wall of one side of the movable block (24). Two connecting blocks (240) are also fixed on the outer wall of the movable block (24). An electric cylinder (23) for driving the connecting block (240) and the movable block (24) to rise and fall is installed below one side of the side plate (20). A cleaning unit (3) is installed on the top rear side of the base (1). The cleaning unit (3) includes two symmetrical and hollow shells (30). Multiple suction holes (300) are opened on the two opposite end faces of the two shells (30). Two straight pipes (31) are installed on both sides of the shells (30). A connecting pipe (310) is installed between the straight pipes (31) and the shells (30). A hollow box (33) is also fixed on the top rear side of the base (1). Two fans (34) are installed on the front end of the housing (33) connected to the straight pipe (31); two mounting slots (330) are opened on the rear end of the housing (33), and a flip-up flap (36) is installed at the mounting slot (330). Two hinges (38) are installed at the connection between one end of the flap (36) and the housing (33); a detachable fixing frame (35) is installed near both ends inside the housing (33), and a dust filter (351) is fixed at the opening of the fixing frame (35).

2. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: The upper and lower walls of the fixing frame (35) are fixed with inserts (350), and the inner cavity of the box (33) is provided with multiple slots (332) on the upper and lower walls. The inserts (350) are inserted into the corresponding slots (332).

3. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: Two support plates (32) are installed on the top of the box (33), and the upper and lower ends of the support plates (32) are fixedly connected to the box (33) and the shell (30) by bolts.

4. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: Two guide rods (201) are fixedly connected to the notch (200) by bolts. The guide rods (201) pass through the movable block (24) and are slidably connected to the movable block (24).

5. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: A support plate (202) is fixedly connected to the bottom of the outer wall of the side plate (20) by bolts, and the electric cylinder (23) is fixedly connected to the support plate (202) by bolts.

6. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: The cross-sectional shape of the suction hole (300) is circular, and the multiple suction holes (300) are distributed in a matrix.

7. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: The inner wall of the box (33) is fixed with mounting blocks (331) at the edge of the mounting groove (330), and the outer wall of the flip plate (36) is provided with connecting bolts (360), which are threadedly connected to the mounting blocks (331).

8. The uniform rolling equipment for lithium battery electrode sheets according to claim 1, characterized in that: The outer wall of the flap (36) is fixedly connected to a handle (37) by bolts, and the cross-sectional shape of the handle (37) is U-shaped.

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