A piece of lithium ion battery winding integrated machine's supporting piece mechanism

Abstract

The utility model discloses a kind of piece supporting mechanism of lithium ion battery winding integrated machine, including side support wall, base, into piece support subassembly, upper dust removal subassembly and lower dust removal subassembly, base is connected in the lower side of side support wall, into piece support subassembly includes the moving platform of horizontal movement setting in the top surface of base and the guide plate of longitudinal movement setting in the top surface of moving platform, upper dust removal subassembly includes first guide rail, sliding block, connecting block, mounting block and first dust absorption stick, first guide rail is fixed in side support wall side, sliding block is movably arranged on first guide rail, connecting block one end is connected with sliding block, another end is connected with the mounting block, the side surface of mounting block opposite connecting block is connected with the first dust absorption stick extending to the upper of guide plate front end, lower dust removal subassembly includes the second dust absorption stick of being arranged in the front end of guide plate.The utility model can improve the dust removal effect on the surface of pole piece, and avoid direct contact with pole piece in dust removal process, to ensure battery finished product quality.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery production technology, specifically to a sheet support mechanism for a lithium-ion battery winding integrated machine. Background Technology

[0002] Currently, lithium battery cell winding is typically accomplished using semi-automatic or fully automatic lithium battery cell winding machines. Fully automatic lithium battery cell winding machines, also known as integrated lithium-ion battery winding machines, work by winding the positive electrode, negative electrode, and separator together in a specific layer sequence to form a cell. The winding process for the positive and negative electrodes generally includes electrode unwinding, tab welding, adhesive application, slicing, alignment, feeding, and winding with the winding needle. The alignment and feeding processes are also called electrode alignment, where the electrodes are positioned, aligned, and straightened manually or using an alignment device during the winding process. Once aligned, the electrodes are fed to the winding needle for winding.

[0003] However, during the welding and conveying process, the surface of the electrode sheets easily accumulates dust. If this dust is not removed from the electrode sheets during the forming process, it can easily puncture the separator, leading to internal short circuits and lithium plating problems in the subsequent batteries wound from the electrode sheets. This is one of the main causes of defective battery products. Current dust removal methods for lithium-ion battery winding machines typically involve using a sponge attached to the electrode sheet surface during the forming process to remove dust. However, due to the limited dust absorption capacity of the sponge, it cannot continue to absorb dust after a period of time, resulting in a decrease in dust removal efficiency. Furthermore, the dust adhering to the sponge can damage the electrode sheet surface, also causing defective battery products. Utility Model Content

[0004] The purpose of this utility model is to provide a sheet-supporting mechanism for a lithium-ion battery winding machine, which can improve the dust removal effect on the electrode surface and avoid direct contact with the electrode during the dust removal process, so as to ensure the quality of the finished battery and solve the problem of poor dust removal effect and easy damage to the electrode surface of dust removal equipment such as sponges mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sheet-supporting mechanism for a lithium-ion battery winding machine includes a side support wall, a base, a sheet-feeding support assembly, an upper dust removal assembly, and a lower dust removal assembly. The base is connected to the lower side of the side support wall. The sheet-feeding support assembly includes a moving platform that is laterally movable on the top surface of the base and a guide plate that is longitudinally movable on the top surface of the moving platform. The upper dust removal assembly includes a first guide rail, a slider, a connecting block, a mounting block, and a first suction rod. The first guide rail is fixed to the side of the side support wall. The slider is movably mounted on the first guide rail. One end of the connecting block is connected to the slider, and the other end is connected to the mounting block. The side of the mounting block facing away from the connecting block is connected to the first suction rod extending above the front end of the guide plate. The lower dust removal assembly includes a second suction rod disposed at the front end of the guide plate.

[0007] Preferably, the upper dust removal assembly includes a rotating shaft and a pressure roller. One end of the rotating shaft is connected to the mounting block, and the other end extends above the front end of the guide plate. The pressure roller is located at the end of the rotating shaft that extends to the guide plate.

[0008] Preferably, there are two first vacuum cleaner rods, symmetrically arranged on both sides of the rotating shaft. Each first vacuum cleaner rod has an air channel along its axis, and its outer circumferential surface has a plurality of evenly distributed air holes along its axial direction. The air holes are connected to the air channels.

[0009] Preferably, the upper dust removal assembly includes a cylinder fixing plate fixedly disposed on the side of the side support wall and a lifting cylinder fixedly disposed on the cylinder fixing plate, wherein the piston rod of the lifting cylinder is connected upward to the mounting block.

[0010] Preferably, the guide plate has a receiving groove at its front end, the second suction rod is installed in the receiving groove, and a conveying roller located on one side of the second suction rod is rotatably arranged in the receiving groove.

[0011] Preferably, two second guide rails are arranged parallel to each other on the top surface of the moving platform, and the guide plate is movably mounted on the two second guide rails; an X-axis translation component is provided on the side support wall.

[0012] Preferably, the X-axis translation assembly includes a bearing housing, a lead screw, a servo motor, a nut sleeve, and a push rod. The two bearing housings are disposed opposite each other on the side of the side support wall away from the base. The two ends of the lead screw are rotatably connected to the two bearing housings respectively. The servo motor is fixedly installed on the side of the side support wall. The output shaft of the servo motor is drivenly connected to one end of the lead screw. The nut sleeve is threaded onto the lead screw. One end of the push rod is fixedly connected to the nut sleeve, and the other end passes through the side support wall and is movably connected to the guide plate.

[0013] Preferably, two third guide rails are arranged parallel to each other on the top surface of the base, the moving platform is movably mounted on the two third guide rails, and a Y-axis drive cylinder is provided on the base, the piston rod of the Y-axis drive cylinder being connected to the bottom of the moving platform.

[0014] Preferably, a limiting plate is connected to one edge of the guide plate, and a baffle is connected to the other edge of the guide plate. A guide groove for the electrode sheet to pass through is formed between the limiting plate, the baffle, and the top surface of the guide plate.

[0015] Preferably, the baffle is provided with a correction sensor extending to the guide plate, and the correction sensor is electrically connected to the Y-axis drive cylinder.

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

[0017] 1. When the electrode sheet is conveyed to the guide plate, the upper surface of the electrode sheet is cleaned by the first suction rod above the guide plate, and the lower surface of the electrode sheet is cleaned by the second suction rod at the front end of the guide plate. Compared with the traditional sponge, the first and second suction rods can improve the dust removal effect on the surface of the electrode sheet and avoid direct contact with the electrode sheet during the dust removal process, so as to ensure the quality of the finished battery.

[0018] 2. When the electrode passes through the guide plate, the rotating pressure roller is used to press the electrode against the guide plate, so that the electrode is stably conveyed forward and avoids phenomena such as the electrode arching, which would affect the subsequent electrode winding quality; at the same time, there is no relative friction between the pressure roller surface and the electrode surface, which reduces the generation of dust and thus reduces the dust removal pressure.

[0019] 3. The limiting plate and baffle have a positioning function for the electrode and can prevent the electrode from falling off the guide plate. The baffle is equipped with a correction sensor that extends to the guide plate. The correction sensor is electrically connected to the Y-axis drive cylinder. When the correction sensor detects that the electrode has shifted, it sends the shift signal to the Y-axis drive cylinder. The Y-axis drive cylinder then drives the moving stage and the guide plate to move and correct the electrode. Attached Figure Description

[0020] Figure 1 This is a top view of the sheet support mechanism of the lithium-ion battery winding integrated machine of this utility model;

[0021] Figure 2 This is a perspective view of the sheet support mechanism (side support wall omitted) of the lithium-ion battery winding integrated machine of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Side support wall; 2. Base; 21. Third guide rail; 3. Insertion support assembly; 31. Moving stage; 311. Second guide rail; 32. Guide plate; 321. Receiving groove; 4. Upper dust removal assembly; 41. First guide rail; 42. Slider; 43. Connecting block; 44. Mounting block; 45. First suction rod; 451. Air passage; 452. Air hole; 46. Rotating shaft; 47. Pressure roller; 48. Cylinder fixing plate; 49. Lifting cylinder; 5. Lower dust removal assembly; 51. Second suction rod; 6. Conveyor roller; 7. X-axis translation assembly; 71. Bearing seat; 72. Lead screw; 73. Servo motor; 74. Nut sleeve; 75. Push rod; 8. Limiting plate; 9. Baffle; 10. Correction sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "more than" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "joined," "fixed," etc., are not used in this utility model.

[0025] The terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0026] Please see Figure 1-2 A sheet-supporting mechanism for a lithium-ion battery winding machine includes a side support wall 1, a base 2, a sheet-feeding support assembly 3, an upper dust removal assembly 4, and a lower dust removal assembly 5. The base 2 is connected to the lower side of the side support wall 1. The sheet-feeding support assembly 3 includes a moving platform 31 that is laterally movable on the top surface of the base 2 and a guide plate 32 that is longitudinally movable on the top surface of the moving platform 31.

[0027] The upper dust removal assembly 4 includes a first guide rail 41, a slider 42, a connecting block 43, a mounting block 44, and a first suction rod 45. The first guide rail 41 is fixed to the side of the side support wall 1. The slider 42 is movably mounted on the first guide rail 41. One end of the connecting block 43 is connected to the slider 42, and the other end is connected to the mounting block 44. The side of the mounting block 44 facing away from the connecting block 43 is connected to the first suction rod 45 extending above the front end of the guide plate 32. The lower dust removal assembly 5 includes a second suction rod 51 disposed at the front end of the guide plate 32.

[0028] When the electrode sheet is conveyed from the rear end of the guide plate 32 to the guide plate 32, the upper surface of the electrode sheet is cleaned by the first suction rod 45 above the guide plate 32, and the lower surface of the electrode sheet is cleaned by the second suction rod 51 at the front end of the guide plate 32. Compared with traditional sponges, the first suction rod 45 and the second suction rod 51 can improve the dust removal effect on the surface of the electrode sheet and avoid direct contact with the electrode sheet during the dust removal process, so as to ensure the quality of the finished battery.

[0029] The upper dust removal assembly 4 includes a rotating shaft 46 and a pressure roller 47. One end of the rotating shaft 46 is connected to the mounting block 44, and the other end extends above the front end of the guide plate 32. The pressure roller 47 is located at the end of the rotating shaft 46 extending to the guide plate 32. When the electrode sheet passes over the guide plate 32, the rotating pressure roller 47 presses the electrode sheet against the guide plate 32, ensuring stable forward transport of the electrode sheet and preventing arching or other phenomena that could affect the subsequent electrode sheet winding quality. At the same time, the surface of the pressure roller 47 does not rub against the surface of the electrode sheet, reducing dust generation and thus alleviating the dust removal pressure.

[0030] There are two installation methods for the rotating shaft 46 and the pressure roller 47. In the first method, one end of the rotating shaft 46 is rotatably mounted on the mounting block 44 via a bearing, and the other end, extending above the guide plate 32, is fixedly fitted with the pressure roller 47. In the second method, one end of the rotating shaft 46 is fixedly connected to the mounting block 44, and the other end, extending above the guide plate 32, is rotatably mounted with the pressure roller 47 via a bearing. Both installation methods allow the pressure roller 47 to press the electrode sheet against the guide plate 32 while rolling.

[0031] There are two first suction rods 45, symmetrically arranged on both sides of the rotating shaft 46. Each first suction rod 45 has an air passage 451 along its axis, and its outer circumferential surface has several evenly distributed air holes 452 along its axial direction. The air holes 452 communicate with the air passage 451. The air passage 451 is connected to the pipe of an external vacuum cleaner. During dust removal, the external vacuum cleaner draws dust from the surface of the electrode plate into the air passage 451 through the air holes 452, and then into the external vacuum cleaner through the pipe. In this embodiment, the second suction rod 51 is connected to the pipe of the external vacuum cleaner. The structure of the second suction rod 51 is the same as that of the first suction rod 45, and its structure will not be described again here.

[0032] The guide plate 32 has a receiving groove 321 at its front end, and the second dust suction rod 51 is installed in the receiving groove 321. A conveying roller 6 located on one side of the second dust suction rod 51 is rotatably arranged in the receiving groove 321.

[0033] The upper dust removal assembly 4 includes a cylinder fixing plate 48 fixedly mounted on the side of the side support wall 1 and a lifting cylinder 49 fixedly mounted on the cylinder fixing plate 48. The piston rod of the lifting cylinder 49 is connected upward to the mounting block 44. When the electrode on the guide plate 32 passes under the pressure roller 47, the lifting cylinder 49 drives the slider 42, connecting block 43, mounting block 44, pressure roller 47 and the first suction rod 45 to rise and fall together until the pressure roller 47 presses against the upper surface of the electrode. At the same time, the air holes 452 of the first suction rod 45 begin to absorb the dust on the upper surface of the electrode, and the second suction rod 51 begins to absorb the dust on the lower surface of the electrode.

[0034] Two second guide rails 311 are arranged parallel to each other on the top surface of the moving stage 31, and the guide plate 32 is movably mounted on the two second guide rails 311; an X-axis translation assembly 7 is provided on the side support wall 1. The X-axis translation assembly 7 includes a bearing seat 71, a lead screw 72, a servo motor 73, a nut sleeve 74, and a push rod 75. The two bearing seats 71 are arranged opposite each other on the side of the side support wall 1 away from the base 2. The two ends of the lead screw 72 are rotatably connected to the two bearing seats 71 respectively. The servo motor 73 is fixedly mounted on the side of the side support wall 1, and the output shaft of the servo motor 73 is drivenly connected to one end of the lead screw 72. The nut sleeve 74 is threaded onto the lead screw 72. One end of the push rod 75 is fixedly connected to the nut sleeve 74, and the other end passes through the side support wall 1 and is movably connected to the guide plate 32.

[0035] In this embodiment, the output shaft of the servo motor 73 is connected to one end of the lead screw 72 via a belt or chain; the guide plate 32 is provided with a through hole for one end of the push rod 75 to extend into.

[0036] When feeding the wafers through the guide plate 32, the servo motor 73 is started. The servo motor 73 drives the lead screw 72 to rotate, which causes the nut sleeve 74 to move along the axial direction of the lead screw 72, while driving the push rod 75 to move forward or backward. The push rod 75 can then drive the guide plate 32 and the electrode sheets on the guide plate 32 to move forward to feed the wafers.

[0037] Two third guide rails 21 are arranged parallel to each other on the top surface of the base 2, and the moving stage 31 is movably mounted on the two third guide rails 21. In this embodiment, a Y-axis drive cylinder (not shown) is provided on the base 2. The piston rod of the Y-axis drive cylinder is connected to the bottom of the moving stage 31 and is used to drive the moving stage 31 and the opposite side support wall 1 of the guide plate 32 to move left and right, thereby realizing the correction of the electrode plate on the guide plate 32.

[0038] A limiting plate 8 is connected to one edge of the guide plate 32, and a baffle 9 is connected to the other edge of the guide plate 32. A guide groove for the electrode sheet to pass through is formed between the limiting plate 8, the baffle 9, and the top surface of the guide plate 32. In this embodiment, the limiting plate 8 and the baffle 9 have a positioning function for the electrode sheet and can prevent the electrode sheet from falling off the guide plate 32. In this embodiment, a correction sensor 10 extending to the guide plate 32 is provided on the baffle 9. The correction sensor 10 is electrically connected to the Y-axis drive cylinder. When the correction sensor 10 detects that the electrode sheet has shifted, it sends an offset signal to the Y-axis drive cylinder, which then drives the moving stage 31 and the guide plate 32 to move and correct the electrode sheet.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sheet-supporting mechanism for a lithium-ion battery winding integrated machine, comprising a side support wall (1), a base (2), a sheet-feeding support assembly (3), an upper dust removal assembly (4), and a lower dust removal assembly (5), wherein the base (2) is connected to the lower side of the side support wall (1), characterized in that: The insert support assembly (3) includes a moving platform (31) that is laterally movable on the top surface of the base (2) and a guide plate (32) that is longitudinally movable on the top surface of the moving platform (31). The upper dust removal assembly (4) includes a first guide rail (41), a slider (42), a connecting block (43), an mounting block (44), and a first dust suction rod (45). The first guide rail (41) is fixed to the side of the side support wall (1). The slider (42) is movably disposed on the first guide rail (41). One end of the connecting block (43) is connected to the slider (42), and the other end is connected to the mounting block (44). The side of the mounting block (44) facing away from the connecting block (43) is connected to the first dust suction rod (45) that extends to the front end of the guide plate (32). The lower dust removal assembly (5) includes a second dust suction rod (51) disposed at the front end of the guide plate (32).

2. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 1, characterized in that: The upper dust removal assembly (4) includes a rotating shaft (46) and a pressure roller (47). One end of the rotating shaft (46) is connected to the mounting block (44), and the other end extends to the front end of the guide plate (32). The pressure roller (47) is located at the end of the rotating shaft (46) that extends to the guide plate (32).

3. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 2, characterized in that: There are two first vacuum sticks (45), which are symmetrically arranged on both sides of the rotating shaft (46). The first vacuum stick (45) has an air channel (451) along its axis. The outer circumference of the first vacuum stick (45) has a number of evenly distributed air holes (452) along its axial direction. The air holes (452) are connected to the air channel (451).

4. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 1, characterized in that: The upper dust removal assembly (4) includes a cylinder fixing plate (48) fixedly installed on the side of the side support wall (1) and a lifting cylinder (49) fixedly installed on the cylinder fixing plate (48). The piston rod of the lifting cylinder (49) is connected upward to the mounting block (44).

5. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 1, characterized in that: The guide plate (32) has a receiving groove (321) at its front end, and the second suction rod (51) is installed in the receiving groove (321). A conveying roller (6) located on one side of the second suction rod (51) is rotatably arranged in the receiving groove (321).

6. The sheet support mechanism of the lithium-ion battery winding integrated machine according to any one of claims 1-5, characterized in that: The top surface of the moving platform (31) is provided with two second guide rails (311) arranged in parallel, and the guide plate (32) is movably arranged on the two second guide rails (311); the side support wall (1) is provided with an X-axis translation component (7).

7. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 6, characterized in that: The X-axis translation assembly (7) includes a bearing housing (71), a lead screw (72), a servo motor (73), a nut sleeve (74), and a push rod (75). The two bearing housings (71) are arranged opposite each other on the side of the side support wall (1) away from the base (2). The two ends of the lead screw (72) are rotatably connected to the two bearing housings (71) respectively. The servo motor (73) is fixedly installed on the side of the side support wall (1). The output shaft of the servo motor (73) is connected to one end of the lead screw (72). The nut sleeve (74) is threaded onto the lead screw (72). One end of the push rod (75) is fixedly connected to the nut sleeve (74), and the other end passes through the side support wall (1) and is movably connected to the guide plate (32).

8. The sheet support mechanism of the lithium-ion battery winding integrated machine according to any one of claims 1-5, characterized in that: The base (2) has two third guide rails (21) arranged in parallel on its top surface. The moving platform (31) is movably mounted on the two third guide rails (21). The base (2) is equipped with a Y-axis drive cylinder, and the piston rod of the Y-axis drive cylinder is connected to the bottom of the moving platform (31).

9. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 8, characterized in that: One edge of the guide plate (32) is connected to a limiting plate (8), and the other edge of the guide plate (32) is connected to a baffle (9). A guide groove for the electrode sheet to pass through is formed between the limiting plate (8), the baffle (9) and the top surface of the guide plate (32).

10. The sheet support mechanism of the lithium-ion battery winding integrated machine according to claim 9, characterized in that: A correction sensor (10) extending to the guide plate (32) is provided on the baffle (9), and the correction sensor (10) is electrically connected to the Y-axis drive cylinder.

Images