An electrode sheet automatic winding device for lithium battery production

Abstract

The utility model provides a kind of pole piece automatic winding device for lithium battery production, belong to lithium battery production equipment technical field, including rack, feeding assembly and multi-station winding assembly, the surface fixed mounting of rack has station panel;The utility model: rotating installation is carried out in the inside of circular mounting hole, and one end of rolling support is equipped with driving device, rotating is driven to rolling support by driving device, and multiple winding plates of surface installation are driven to rotate by rolling support, so that winding plate is rotated and appears rotating water type displacement to feeding station, it is convenient to continuously carry out the winding processing of battery pole piece, and the battery roll after winding is rolled and transposed to next cutting station cutting by rolling support, realizes water type winding processing, improves production efficiency, and winding plate is wound to battery pole piece by driving transmission rod to rotate by winding motor.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery production equipment, specifically to an automatic electrode winding device for lithium battery production. Background Technology

[0002] Lithium batteries can be broadly classified into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. Their safety, specific capacity, self-discharge rate, and performance-price ratio are all superior to lithium-ion batteries. Due to their high technical requirements, only a few companies in a few countries currently produce lithium metal batteries. The processing of lithium batteries requires a semi-automatic electrode winding and pushing device. However, existing semi-automatic electrode winding and pushing devices have low processing efficiency and low precision, reducing cell consistency and safety. The relevant application number is "CN201721123589". This invention relates to a semi-automatic lithium battery winding electrode pushing device. Through the coordination of various structures, it solves the problems of low processing efficiency and low processing accuracy in existing semi-automatic lithium battery winding electrode pushing devices. This device boasts high processing efficiency and high processing accuracy, improving cell consistency and safety. However, it still has some shortcomings in use: because the winding station only has one winding plate for winding the electrode, each winding requires electrode cutting and unloading before the next battery can be wound, thus limiting its efficiency. Utility Model Content

[0003] The purpose of this invention is to provide an automatic electrode winding device for lithium battery production, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic electrode winding device for lithium battery production, comprising a frame, a feeding assembly, and a multi-station winding assembly; Wherein: a workstation panel is fixedly installed on the surface of the frame, and a circular mounting hole is opened on one side of the surface of the workstation panel; The feeding assembly includes a positive electrode feeding guide groove fixedly installed on the surface of the workstation panel. A negative electrode feeding guide groove is installed below the positive electrode feeding guide groove on the surface of the workstation panel. A corresponding diaphragm unwinding frame is rotatably installed below both the positive and negative electrode feeding guide grooves. One end of each of the positive and negative electrode feeding guide grooves is connected to a guide groove. One end of the two guide grooves is inclined and close to each other. Several guide rollers are provided at the bottom of the guide grooves and are distributed towards the guide grooves. The multi-station winding assembly includes a rolling bracket rotatably mounted inside a circular mounting hole. A drive device is mounted on one end of the rolling bracket, and multiple transmission rods are rotatably mounted inside the rolling bracket. A winding plate is fixedly mounted on one end of each transmission rod, and a winding motor is mounted on the surface of the rolling bracket corresponding to the other end of the transmission rod. The output end of the winding motor is fixedly connected to the transmission rod.

[0005] As a preferred embodiment of the present invention: the driving device includes an annular gear ring fixedly installed at one end of the rolling bracket, a driving motor is installed on the back of the workstation panel, a driving gear is fixedly installed at the output end of the driving motor, and the driving gear meshes with the annular gear ring.

[0006] As a preferred embodiment of this utility model: a first electric push rod is installed on the surface of the workstation panel above the winding plate, and a cutting blade is installed on the telescopic end of the first electric push rod. A second electric push rod is installed on the workstation panel corresponding to the first electric push rod, and a cutting table is installed on the telescopic end of the second electric push rod.

[0007] As a preferred embodiment of this utility model: a receiving hopper is installed on one side of the surface of the workstation panel, the receiving hopper is located below the winding plate, and a conveyor belt is provided at the bottom of the receiving hopper.

[0008] As a preferred embodiment of this utility model: the cutting blade and the cutting table are arranged inside the winding plate corresponding to the receiving hopper.

[0009] As a preferred embodiment of this utility model: a fixing plate is installed on the surface of the workstation panel, the first electric push rod is installed on the surface of the fixing plate, limit sleeves are installed on both sides of the surface of the fixing plate, and slide rods are installed at both ends of the top of the cutting blade, and the slide rods are slidably installed inside the limit sleeves.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) A rolling bracket is rotatably installed inside the circular mounting hole. A driving device is installed at one end of the rolling bracket. The driving device drives the rolling bracket to rotate, and the rolling bracket drives multiple winding plates mounted on the surface to rotate. This causes the winding plates to rotate and move to the feeding station in a flowing manner, which facilitates continuous winding of the battery electrode. The wound battery roll is rolled and moved to the next cutting station for cutting through the rolling bracket, realizing the flowing winding process and improving production efficiency. The winding motor drives the transmission rod to rotate, thereby winding the battery electrode. (2) A positive electrode feeding guide groove and a negative electrode feeding guide groove are installed on the surface of the workstation panel. The positive electrode feeding guide groove and the negative electrode feeding guide groove are used to transport the positive electrode and the negative electrode. The diaphragm unwinding rack installed below the positive electrode feeding guide groove and the negative electrode feeding guide groove is used to place the diaphragm roll. Before winding, the positive electrode and the negative electrode are placed into the guide groove through the positive electrode feeding guide groove and the negative electrode feeding guide groove respectively. At the same time, the diaphragm is pulled out, passes around the guide roller, and merges into the other end of the guide groove, so that the diaphragm is placed between the positive electrode and the negative electrode, which facilitates the winding process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the feeding assembly structure of this utility model; Figure 3 This is a schematic diagram of the multi-station winding assembly structure of this utility model; Figure 4 This is a schematic diagram of the cutting blade mounting structure of this utility model.

[0012] In the diagram: 1. Frame; 2. Station panel; 3. Circular mounting hole; 4. Feeding assembly; 41. Positive electrode feeding guide groove; 42. Negative electrode feeding guide groove; 43. Diaphragm unwinding frame; 44. Guide groove; 45. Guide roller; 5. Multi-station winding assembly; 51. Rolling support; 52. Drive device; 521. Ring gear; 522. Drive motor; 523. Drive gear; 53. Transmission rod; 54. Winding plate; 55. Winding motor; 6. First electric push rod; 7. Cutting blade; 8. Second electric push rod; 9. Cutting table; 10. Receiving hopper; 11. Conveyor belt; 12. Fixing plate; 13. Limiting sleeve; 14. Slide rod. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figures 1-4 An automatic electrode winding device for lithium battery production includes: a frame 1, a feeding assembly 4 and a multi-station winding assembly 5; a station panel 2 is fixedly installed on the surface of the frame 1, and a circular mounting hole 3 is opened on one side of the surface of the station panel 2. Please see Figure 1 , Figure 2 The feeding assembly 4 includes a positive electrode feeding guide 41 fixedly installed on the surface of the workstation panel 2. A negative electrode feeding guide 42 is installed on the surface of the workstation panel 2 below the positive electrode feeding guide 41. A corresponding diaphragm unwinding frame 43 is rotatably installed below both the positive electrode feeding guide 41 and the negative electrode feeding guide 42. One end of both the positive electrode feeding guide 41 and the negative electrode feeding guide 42 is connected to a guide groove 44. One end of the two guide grooves 44 is inclined and close to each other. Several guide rollers 45 are provided at the bottom of the guide grooves 44 and are distributed close to the guide grooves 44.

[0015] In practical use: A positive electrode feeding guide 41 and a negative electrode feeding guide 42 are installed on the surface of the workstation panel 2. The positive electrode feeding guide 41 and the negative electrode feeding guide 42 are used to transport the positive electrode and the negative electrode. The diaphragm unwinding rack 43 installed below the positive electrode feeding guide 41 and the negative electrode feeding guide 42 is used to place the diaphragm roll. Before winding, the positive electrode and the negative electrode are placed into the guide groove 44 through the positive electrode feeding guide 41 and the negative electrode feeding guide 42 respectively. At the same time, the diaphragm is pulled out, passes around the guide roller 45 and merges into the other end of the guide groove 44, so that the diaphragm is placed between the positive electrode and the negative electrode, which facilitates the winding process.

[0016] Please see Figure 3 The multi-station winding assembly 5 includes a rolling bracket 51 rotatably installed inside a circular mounting hole 3. A drive device 52 is installed at one end of the rolling bracket 51. Multiple transmission rods 53 are rotatably installed inside the rolling bracket 51. A winding plate 54 is fixedly installed at one end of each transmission rod 53. A winding motor 55 is installed on the surface of the rolling bracket 51 corresponding to the other end of the transmission rod 53. The output end of the winding motor 55 is fixedly connected to the transmission rod 53.

[0017] In practical use: A rolling bracket 51 is rotatably installed inside the circular mounting hole 3. A driving device 52 is installed at one end of the rolling bracket 51. The driving device 52 drives the rolling bracket 51 to rotate, and the rolling bracket 51 drives multiple winding plates 54 mounted on the surface to rotate accordingly. This causes the winding plates 54 to rotate and move to the feeding station in a continuous flow, which facilitates the continuous winding of battery electrode sheets. The wound battery roll is rolled and moved to the next cutting station by the rolling bracket 51 for cutting, realizing continuous winding processing and improving production efficiency. The winding motor 55 drives the transmission rod 53 to rotate, thereby causing the winding plate 54 to wind the battery electrode sheets.

[0018] Please see Figure 3 The drive device 52 includes an annular gear ring 521 fixedly installed at one end of the rolling bracket 51, a drive motor 522 installed on the back of the workstation panel 2, and a drive gear 523 fixedly installed at the output end of the drive motor 522, which meshes with the annular gear ring 521.

[0019] In practical use: the drive device 52 includes an annular gear ring 521 fixedly installed at one end of the rolling bracket 51. After the drive motor 522 rotates, it drives the annular gear ring 521 to rotate through the drive gear 523, thereby driving the rolling bracket 51 and the multiple winding plates 54 provided on the surface to rotate and change position.

[0020] Please see Figure 1 , Figure 4 A first electric push rod 6 is installed on the surface of the workstation panel 2 above the winding plate 54. A cutting blade 7 is installed on the telescopic end of the first electric push rod 6. A second electric push rod 8 is installed on the workstation panel 2 corresponding to the first electric push rod 6. A cutting table 9 is installed on the telescopic end of the second electric push rod 8.

[0021] In practical use: A first electric push rod 6 is installed on the surface of the workstation panel 2 above the winding plate 54, and a second electric push rod 8 is installed at the bottom of the first electric push rod 6. The first electric push rod 6 and the second electric push rod 8 extend synchronously so that the cutting blade 7 and the cutting table 9 are close to each other, which facilitates the cutting of the wound electrode sheet.

[0022] Please see Figure 4 A receiving hopper 10 is installed on one side of the surface of the workstation panel 2. The receiving hopper 10 is located below the winding plate 54. A conveyor belt 11 is provided at the bottom of the receiving hopper 10. The cutting blade 7 and the cutting table 9 are located inside the winding plate 54 corresponding to the receiving hopper 10.

[0023] In practical use: The receiving hopper 10 is installed on one side of the workstation panel 2. The cutting blade 7 and the cutting table 9 are set inside the winding plate 54 corresponding to the receiving hopper 10, so that the receiving hopper 10 after cutting catches the battery core that falls off the winding plate 54, and the winding battery core is transported to the next workstation by the conveyor belt 11 below the receiving hopper 10.

[0024] Please see Figure 4 A fixing plate 12 is installed on the surface of the workstation panel 2. The first electric push rod 6 is installed on the surface of the fixing plate 12. Limit sleeves 13 are installed on both sides of the surface of the fixing plate 12. Slide rods 14 are installed at both ends of the top of the cutting blade 7. The slide rods 14 are slidably installed inside the limit sleeves 13.

[0025] In practical use: A fixing plate 12 is installed on the surface of the workstation panel 2. When the cutting blade 7 is cutting, the slide rods 14 installed at both ends of the top slide inside the limiting sleeves 13 installed on both sides of the surface of the fixing plate 12, so that the cutting blade 7 remains stable during the cutting process.

[0026] A rolling bracket 51 is rotatably installed inside the circular mounting hole 3. A driving device 52 is installed at one end of the rolling bracket 51. The driving device 52 drives the rolling bracket 51 to rotate, and the rolling bracket 51 drives multiple winding plates 54 mounted on the surface to rotate accordingly. This causes the winding plates 54 to rotate and move to the feeding station in a continuous flow, which facilitates the continuous winding of battery electrode sheets. The wound battery roll is rolled and moved to the next cutting station by the rolling bracket 51 for cutting, realizing continuous winding processing and improving production efficiency. The winding motor 55 drives the transmission rod 53 to rotate, thereby causing the winding plate 54 to wind the battery electrode sheets.

[0027] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic electrode winding device for lithium battery production, characterized in that, include: A frame (1) is provided with a workstation panel (2) fixedly mounted on its surface. A circular mounting hole (3) is provided on one side of the surface of the workstation panel (2). The feeding assembly (4) includes a positive electrode feeding guide groove (41) fixedly installed on the surface of the workstation panel (2). A negative electrode feeding guide groove (42) is installed on the surface of the workstation panel (2) below the positive electrode feeding guide groove (41). A corresponding diaphragm unwinding frame (43) is rotatably installed below both the positive electrode feeding guide groove (41) and the negative electrode feeding guide groove (42). A guide groove (44) is connected to one end of both the positive electrode feeding guide groove (41) and the negative electrode feeding guide groove (42). One end of the two guide grooves (44) is inclined and close to each other. A number of guide rollers (45) are provided at the bottom of the guide grooves (44). The number of guide rollers (45) are distributed close to the guide grooves (44). A multi-station winding assembly (5) includes a rolling bracket (51) rotatably installed inside a circular mounting hole (3). A driving device (52) is installed at one end of the rolling bracket (51). Multiple transmission rods (53) are rotatably installed inside the rolling bracket (51). A winding plate (54) is fixedly installed at one end of the transmission rod (53). A winding motor (55) is installed on the surface of the rolling bracket (51) corresponding to the other end of the transmission rod (53). The output end of the winding motor (55) is fixedly connected to the transmission rod (53).

2. The winding device according to claim 1, characterized in that: The drive device (52) includes an annular gear ring (521) fixedly installed at one end of the rolling bracket (51), a drive motor (522) is installed on the back of the workstation panel (2), and a drive gear (523) is fixedly installed at the output end of the drive motor (522), and the drive gear (523) meshes with the annular gear ring (521).

3. The winding device according to claim 1, characterized in that: The surface of the workstation panel (2) is equipped with a first electric push rod (6) above the winding plate (54). A cutting blade (7) is installed at the telescopic end of the first electric push rod (6). A second electric push rod (8) is installed on the workstation panel (2) corresponding to the first electric push rod (6). A cutting table (9) is installed at the telescopic end of the second electric push rod (8).

4. The winding device according to claim 1, characterized in that: A receiving hopper (10) is installed on one side of the surface of the workstation panel (2). The receiving hopper (10) is located below the winding plate (54), and a conveyor belt (11) is provided at the bottom of the receiving hopper (10).

5. The winding device according to claim 3, characterized in that: The cutting blade (7) and the cutting table (9) are located inside the winding plate (54) corresponding to the receiving hopper (10).

6. The winding device according to claim 3, characterized in that: A fixing plate (12) is installed on the surface of the workstation panel (2). The first electric push rod (6) is installed on the surface of the fixing plate (12). Limit sleeves (13) are installed on both sides of the surface of the fixing plate (12). Slide rods (14) are installed at both ends of the top of the cutting blade (7). The slide rods (14) are slidably installed inside the limit sleeves (13).

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