Full-automatic multi-station winding equipment for battery cell

Abstract

The application relates to a full-automatic multi-station winding equipment for an electric core, which comprises a box body, a plurality of unwinding rollers for unwinding pole pieces arranged at the front end of the box body, and a rolling roller arranged at one side of the unwinding rollers for rolling the pole pieces, a driving assembly and a plurality of winding units driven by the driving assembly are arranged in the box body, each of the plurality of winding units comprises a conveying assembly and a blowing assembly arranged at the lower end of the conveying assembly, the end of the conveying assembly is provided with a mechanical grab, a cutting assembly is arranged above the conveying assembly, the conveying assembly conveys the rolled pole pieces under the cooperation of the blowing assembly, the mechanical grab is used for fixing the pole pieces, cutting the pole pieces by the cutting assembly and winding the pole pieces, and the plurality of winding units are driven by the driving assembly to alternately complete the winding of the pole pieces; the driving assembly is used for continuously and multi-stationally completing the winding work of the electric core, and the problem of low production efficiency in the market is avoided.

Description

Technical Field

[0001] This invention relates to the field of battery cell equipment technology, specifically to a fully automated multi-station battery cell winding device. Background Technology

[0002] A winding machine is a machine that assembles the positive electrode, negative electrode and separator of a battery into a core pack by rotating continuously. The wound "core pack" is placed into the battery case, injected with electrolyte, and then encapsulated, formed and other subsequent processes. The cell winding process directly determines the final performance, safety and consistency of the battery.

[0003] A Chinese invention patent with announcement number CN108110308A discloses a battery cell winding device and a battery cell winding method, including a positive electrode unwinding mechanism, a negative electrode unwinding mechanism, a first separator unwinding mechanism, a second separator unwinding mechanism, multiple drive shafts, a first preheating mechanism, and a winding needle device. The negative electrode sheet output from the negative electrode unwinding mechanism, the first coated separator output from the first separator unwinding mechanism, the positive electrode sheet output from the positive electrode unwinding mechanism, and the second coated separator output from the second separator unwinding mechanism are respectively transmitted to the first preheating mechanism via drive shafts for preheating and pressing treatment to form a bonded body.

[0004] However, the inventors discovered that in the actual production process, the positive and negative electrode sheets need to be placed manually between the separators and then wound by machine. This not only consumes manpower and resources, but also has low continuity and low production efficiency. Based on this, we proposed a fully automatic multi-station winding equipment for battery cells. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by incorporating a drive assembly and several winding units driven by the drive assembly within the housing. Each winding unit includes a conveying assembly and an air-blowing assembly located at the lower end of the conveying assembly. A mechanical gripper is located at the end of the conveying assembly, and a cutting assembly is located above the conveying assembly. The conveying assembly, in conjunction with the air-blowing assembly, conveys the rolled-up electrode sheets. The mechanical gripper is used to fix the electrode sheets, which are then cut and wound by the cutting assembly. The winding units alternately complete the electrode sheet winding under the drive assembly. This invention achieves continuous and multi-station cell winding through the alternating lifting and lowering of the drive assembly, avoiding the problem of low production efficiency in existing products on the market.

[0006] To address the aforementioned technical problems, the present invention adopts the following technical solution:

[0007] A fully automatic multi-station winding equipment for battery cells includes a housing and several unwinding rollers for unwinding electrode sheets located at the front end of the housing, and a compacting roller for compacting the electrode sheets located on one side of the unwinding rollers. The housing is equipped with a drive assembly and several sets of winding units driven by the drive assembly. Each set of winding units includes a conveying assembly and an air blowing assembly located at the lower end of the conveying assembly. The end of the conveying assembly is equipped with a mechanical gripper, and the top of the conveying assembly is equipped with a cutting assembly. The conveying assembly, in cooperation with the air blowing assembly, conveys the compacted electrode sheets. The mechanical gripper is used to fix the electrode sheets and then cut them by the cutting assembly and wind them up. The several sets of winding units alternately complete the winding of the electrode sheets under the drive assembly.

[0008] As a preferred embodiment, the drive assembly includes a first guide rod and a second lead screw arranged side by side, a servo motor for driving the first guide rod to rotate, pulleys both disposed at the lower ends of the first guide rod and the second lead screw, a belt disposed on the pulleys, a first bracket disposed on the first guide rod, and a second bracket disposed on the second guide rod.

[0009] As a preferred embodiment, one end of both the first bracket and the second bracket is provided with a slide rail, and both the first bracket and the second bracket are slidably disposed within the slide rail.

[0010] As a preferred embodiment, the conveying assembly includes a first conveying plate and a second conveying plate arranged side by side, and a guide roller disposed between the first conveying plate and the second conveying plate.

[0011] As a preferred embodiment, the air blowing assembly includes air holes formed on the first conveyor plate and the second conveyor plate, an air chamber disposed at the lower end of the first conveyor plate and the second conveyor plate, and an air pipe connected to the lower end of the air chamber.

[0012] As a preferred embodiment, the air outlets of the air vents are all inclined toward the direction of the mechanical gripper.

[0013] As a preferred embodiment, the cutting assembly includes support plates mounted on the upper and lower ends of the housing, a cylinder fixedly mounted on the support plates, and a blade mounted on the piston rod of the cylinder.

[0014] As another preferred embodiment, the front end of the rolling roller is provided with an angled air inlet.

[0015] The beneficial effects of this invention are:

[0016] In this invention, the drive assembly drives the winding unit to alternately rise and fall. The cut electrode sheet moves to one side with the winding unit for winding, while another winding unit moves to the same horizontal height as the unwinding roller, continuously carrying the placement of the electrode sheet. After cutting, the two winding units change positions and continuously wind the electrode sheet, which improves production efficiency while ensuring the quality of cell winding.

[0017] In this invention, by providing an oblique air outlet at the front end of the grinding roller and an air blowing component at the lower end of the conveying assembly, the obliquely arranged air holes can prevent the electrode sheet from sticking to the conveying plate and prevent the electrode sheet from folding on the conveying plate during the conveying process.

[0018] In summary, this equipment has the advantages of high winding speed and high degree of automation, and is especially suitable for the field of battery cell equipment technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the isometric structure of a fully automated multi-station battery cell winding equipment;

[0021] Figure 2 This is a cross-sectional structural diagram of a fully automated multi-station battery cell winding equipment.

[0022] Figure 3 This is an isometric structural diagram of the conveyor assembly;

[0023] Figure 4 This is a schematic diagram of the isometric structure of the drive component;

[0024] Figure 5 This is a cross-sectional structural diagram of the air blowing assembly;

[0025] Figure 6 This is an isometric structural diagram of the cutting component;

[0026] Figure 7 This is a diagram illustrating the working status of a fully automated multi-station battery cell winding device.

[0027] Figure 8 This is a diagram illustrating the working status of a fully automated multi-station battery cell winding device.

[0028] In the diagram: 1-Box body; 2-Unwinding roller; 3-Crushing roller; 4-Drive assembly; 5-Rewinding unit; 6-Conveying assembly; 7-Air blowing assembly; 8-Mechanical gripper; 9-Cutting assembly; 31-Angled air inlet; 41-First support rod; 42-Second support rod; 43-Servo motor; 44-Pulley; 45-Belt; 46-First support; 47-Second support; 48-Slide rail; 61-First conveyor plate; 62-Second conveyor plate; 63-Guide roller; 71-Air hole; 72-Air chamber; 73-Air pipe; 91-Support plate; 92-Cylinder; 93-Blade. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1, as Figures 1 to 8 As shown, a fully automatic multi-station winding equipment for battery cells includes a housing 1, several unwinding rollers 2 for unwinding electrode sheets located at the front end of the housing 1, and a grinding roller 3 for grinding the electrode sheets located on one side of the unwinding rollers 2. The housing 1 is equipped with a drive assembly 4 and several sets of winding units 5 driven by the drive assembly 4. Each set of winding units 5 includes a conveying assembly 6 and an air blowing assembly 7 located at the lower end of the conveying assembly 6. The end of the conveying assembly 6 is equipped with a mechanical gripper 8, and the top of the conveying assembly 6 is equipped with a cutting assembly 9. The conveying assembly 6, in cooperation with the air blowing assembly 7, conveys the ground electrode sheets. The mechanical gripper 8 is used to fix the electrode sheets and then cut them by the cutting assembly 9 and wind them up. The several sets of winding units 5 alternately complete the winding of the electrode sheets under the drive of the drive assembly 4.

[0032] In this embodiment, as Figures 3 to 5 As shown, the drive assembly 4 includes a first lever 41 and a second lead screw 42 arranged side by side, a servo motor 43 for driving the first lever 41 to rotate, pulleys 44 both located at the lower ends of the first lever 41 and the second lead screw 42, a belt 45 mounted on the pulleys 44, a first bracket 46 mounted on the first lever 41, and a second bracket 47 mounted on the second lever 42. One end of both the first bracket 46 and the second bracket 47 is provided with a slide rail 48, and both the first bracket 46 and the second bracket 47 are slidably mounted within the slide rail 48. In this invention, the servo motor 43 drives the first lever 41 to rotate, and the belt 45 drives the second lever 42 to rotate synchronously, thereby causing the first bracket 46 and the second bracket 47 to rise and fall synchronously.

[0033] It needs to be emphasized that, such as Figure 3 and Figure 6As shown, the conveying assembly 6 includes a first conveying plate 61 and a second conveying plate 62 arranged side by side, and a guide roller 63 disposed between the first conveying plate 61 and the second conveying plate 62; in this invention, the guide roller 63 guides and conveys the rolled electrode sheet to prevent the rolled electrode sheet from falling between the first conveying plate 61 and the second conveying plate 62.

[0034] In addition, such as Figures 5 to 6 As shown, the air blowing assembly 7 includes air holes 71 formed on the first conveying plate 61 and the second conveying plate 62, an air chamber 72 disposed at the lower end of the first conveying plate 61 and the second conveying plate 62, and an air pipe 73 connected to the lower end of the air chamber 72; the air outlets of the air holes 71 are all inclined toward the mechanical gripper 8; in this invention, the inclined air holes 71 can prevent the electrode sheet from sticking to the first conveying plate 61 and the second conveying plate 62, and can prevent the electrode sheet from folding on the conveying plate during the conveying process.

[0035] Furthermore, such as Figure 8 As shown, the cutting assembly 9 includes a support plate 91 mounted on the upper and lower ends of the housing 1, a cylinder 92 fixedly mounted on the support plate 91, and a blade 93 mounted on the piston rod of the cylinder 2. In this invention, the blade 93 is driven by the cylinders 92 at the upper and lower ends to cut the electrode sheet, which can prevent the winding unit 5 from interfering with the blade when it is raised or lowered.

[0036] It needs to be emphasized that, such as Figure 7 and Figure 8 As shown, the front end of the rolling roller 3 is provided with an inclined air vent 31; in this invention, by providing an inclined air vent on the front end face of the rolling roller 3, the electrode sheet can be prevented from falling downwards due to the lack of a point of force during the switching process of the winding unit 5.

[0037] Work process

[0038] The positive electrode, negative electrode, and diaphragm on the unwinding roller 1 all pass through the rolling roller 3 at the same speed. The end of the electrode is blown by the inclined air outlet 31 and falls onto the first conveying plate 61. The rolling roller 3 is driven by a motor to rotate, which drives the electrode to continue to be conveyed forward. An external air blowing device is connected to the air pipe 73. A small amount of air is continuously blown into the air chamber 72 through the air pipe 73 and discharged through the air hole 71. When the end of the electrode is transported to the mechanical gripper 8 on one side of the second conveying plate 62, the mechanical gripper 8 clamps the electrode. At this time, the cylinder 92 drives the blade 93 to cut the electrode.

[0039] Servo motor 43 starts, and through the linkage of belt 45, it drives the second rod 42 and the first rod 41 to rotate synchronously, which drives a set of winding units 5 that have been cut to move and lift. The mechanical gripper 8 rotates while holding the end of the electrode sheet, and winds the electrode sheet into a battery cell. The formed battery cell is then removed by a robotic arm. At this time, another set of winding units 5 continues to receive the electrode sheet pushed in by the rolling roller 3 and repeats the above work.

[0040] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fully automatic multi-station winding equipment for battery cells, comprising a housing (1) and a plurality of unwinding rollers (2) disposed at the front end of the housing (1) for unwinding electrode sheets, and a grinding roller (3) disposed on one side of the unwinding rollers (2) for grinding the electrode sheets, characterized in that: The housing (1) is provided with a drive assembly (4) and several winding units (5) driven by the drive assembly (4). Each winding unit (5) includes a conveying assembly (6) and an air blowing assembly (7) located at the lower end of the conveying assembly (6). A mechanical gripper (8) is provided at the end of the conveying assembly (6). A cutting assembly (9) is provided above the conveying assembly (6). The conveying assembly (6) conveys the rolled electrode sheet in cooperation with the air blowing assembly (7). The mechanical gripper (8) is used to fix the electrode sheet and then cut it by the cutting assembly (9) and wind it up. The winding units (5) alternately complete the winding of the electrode sheet under the drive of the drive assembly (4).

2. The fully automated multi-station winding equipment for battery cells according to claim 1, characterized in that, The drive assembly (4) includes a first rod (41) and a second lead screw (42) arranged side by side, a servo motor (43) for driving the first rod (41) to rotate, pulleys (44) both arranged at the lower ends of the first rod (41) and the second lead screw (42), a belt (45) arranged on the pulleys (44), a first bracket (46) arranged on the first rod (41), and a second bracket (47) arranged on the second rod (42).

3. The fully automated multi-station winding equipment for battery cells according to claim 2, characterized in that, One end of the first bracket (46) and the second bracket (47) is provided with a slide rail (48), and the first bracket (46) and the second bracket (47) are slidably disposed in the slide rail (48).

4. The fully automated multi-station winding equipment for battery cells according to claim 1, characterized in that, The conveying assembly (6) includes a first conveying plate (61) and a second conveying plate (62) arranged side by side, and a guide roller (63) disposed between the first conveying plate (61) and the second conveying plate (62).

5. The fully automated multi-station winding equipment for battery cells according to claim 1, characterized in that, The air blowing assembly (7) includes air holes (71) opened on the first conveying plate (61) and the second conveying plate (62), an air chamber (72) disposed at the lower end of the first conveying plate (61) and the second conveying plate (62), and an air pipe (73) connected to the lower end of the air chamber (72).

6. The fully automated multi-station winding equipment for battery cells according to claim 5, characterized in that, The air outlets of the air holes (71) are all inclined toward the mechanical gripper (8).

7. The fully automated multi-station winding equipment for battery cells according to claim 1, characterized in that, The cutting assembly (9) includes a support plate (91) mounted on the upper and lower ends of the housing (1), a cylinder (92) fixedly mounted on the support plate (91), and a blade (93) mounted on the piston rod of the cylinder (92).

8. The fully automated multi-station winding equipment for battery cells according to claim 1, characterized in that, The front end of the rolling roller (3) is provided with an oblique air outlet (31).

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