Cylindrical lithium battery central tube inserting device

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a cylindrical lithium battery central tube inserting device which comprises a base, and a pushing mechanism, a central tube feeding mechanism and a self-centering clamping mechanism are sequentially arranged on the base; the pushing mechanism at least comprises a linear driving mechanism and a steel needle, and the linear driving mechanism drives the steel needle to do reciprocating motion in the horizontal direction and is used for pushing the central pipe; the center pipe feeding mechanism is provided with an open through groove allowing a single center pipe to pass through, and it is guaranteed that the center pipes accurately fall one by one. The self-centering clamping mechanism is used for clamping a battery cell and automatically centering a central hole of the battery cell; wherein the steel needle, the open through groove in the central tube feeding mechanism and the central hole of the battery cell are kept at the same horizontal position during insertion. The self-centering clamping mechanism can automatically adapt to battery cells with different diameters, complex adjustment is not needed, and the universality and the production flexibility of the equipment are improved.

Description

Technical Field

[0001] This application relates to the technical field of lithium batteries, and specifically to a central tube insertion device for cylindrical lithium batteries. Background Art

[0002] In the current field of lithium-ion battery manufacturing, cylindrical batteries are widely used in consumer electronics, electric vehicles, and energy storage systems due to their high energy density, good mechanical strength, and easy encapsulation. In the structure of a cylindrical lithium battery, as one of the key components, the central tube not only functions to isolate the positive and negative electrodes and prevent short circuits, but also participates in the storage and transmission of the electrolyte, directly affecting the overall performance of the battery. Therefore, the precise insertion of the central tube becomes an important link in the battery assembly process.

[0003] The traditional manual insertion method of the central tube is not only inefficient, but also difficult to ensure the accuracy and consistency of each insertion, easily leading to large fluctuations in battery performance and low yield. In recent years, with the development of automation technology, various automated central tube insertion devices have emerged on the market. Chinese Patent Application Publication No.: CN217035733U provides a central tube insertion device for cylindrical lithium batteries, which overcomes the defects of low efficiency and high cost of manually inserting the central tube in the prior art, and can achieve high-efficiency insertion of the central tube. However, this device still has problems such as poor adaptability, inability to accurately align with the center hole of the battery cell, or the need for complex adjustments when dealing with battery cells of different diameters, affecting production efficiency and product quality. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, this application provides a central tube insertion device for cylindrical lithium batteries.

[0006] (II) Technical Solutions

[0007] To solve the above problems, this application provides the following technical solution: A central tube insertion device for cylindrical lithium batteries, comprising: a base, on which a pushing mechanism, a central tube feeding mechanism, and a self-centering clamping mechanism are sequentially arranged;

[0008] The pushing mechanism at least includes a linear drive mechanism and a steel needle. The linear drive mechanism drives the steel needle to reciprocate horizontally for pushing the central tube; the central tube feeding mechanism has an open through groove through which a single central tube can pass to ensure that the central tubes fall precisely one by one; the self-centering clamping mechanism is used to clamp the battery cell and automatically center the central hole of the battery cell;

[0009] Wherein, the steel needle, the open through groove in the central tube feeding mechanism, and the central hole of the battery cell are in the same horizontal position during insertion.

[0010] Preferably, the linear drive mechanism is composed of a linear module and a servo motor installed on the base, and the servo motor drives the linear module to drive the steel needle to move.

[0011] Preferably, the central tube feeding mechanism includes a feeding funnel and a leaking tube part, and the leaking tube part has an opening through groove that only allows a single central tube to pass through.

[0012] Preferably, a positioning mechanism is further included. The positioning mechanism includes a fixed seat, the fixed seat is fixedly installed on the base, a first cylinder is fixedly installed on the fixed seat, and a baffle is installed at the telescopic rod of the first cylinder for positioning by contacting the side of the battery cell.

[0013] Preferably, a laser emitter is built in the center position of the baffle for detecting the position deviation of the central hole of the battery cell.

[0014] Preferably, the laser emitter is arranged inside the baffle, and a glass baffle is arranged on the surface of the laser emitter.

[0015] Preferably, the self-centering clamping mechanism includes a self-centering clamping mechanism body. An installation groove is opened inside the self-centering clamping mechanism body, a second cylinder is arranged at the bottom of the installation groove, and the telescopic rod of the second cylinder is connected with a telescopic rod.

[0016] Preferably, a sliding table is installed at the upper end of the telescopic rod. Rotating wheels are arranged on both sides of the slope of the sliding table. The rotating wheels move on the connecting rod, the connecting rod is rotatably connected to the upper end inside the installation groove, and top rings are installed at the ends of the connecting rod and the telescopic rod that are close to each other.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present application provides a central tube insertion device for cylindrical lithium batteries, having the following beneficial effects:

[0019] 1. For the central tube insertion device for cylindrical lithium batteries, through the self-centering clamping mechanism, it can automatically adapt to battery cells with different diameters without complex adjustment, improving the versatility and production flexibility of the equipment; at the same time, by integrating a laser emitter for central hole positioning detection, the precise alignment of the central tube and the central hole of the battery cell is ensured, effectively avoiding insertion deviation and blockage problems, and improving the accuracy of battery assembly. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a central tube insertion device for a cylindrical lithium battery in the present application;

[0021] Figure 2 is a schematic structural diagram of the self-centering clamping mechanism in the present application;

[0022] Figure 3This is the structural schematic diagram of the laser detection mechanism of the present application;

[0023] Figure 4 This is the structural schematic diagram used by the self-centering clamping mechanism of the present application.

[0024] In the figure: 1. Base; 2. Pushing mechanism; 3. Central tube feeding mechanism; 4. Central tube; 5. Self-centering clamping mechanism body; 51. Slide table; 52. Installation groove; 53. Upper limit plate; 54. Top ring; 55. Connecting rod; 56. Rotating wheel; 57. Lower limit plate; 58. Telescopic rod; 59. Second cylinder; 6. Electric core; 7. Baffle; 71. Laser emitter; 72. Glass baffle; 8. First cylinder; 9. Fixed seat. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] Please refer to Figure 1 , the present application provides a new technical solution: a central tube insertion device for cylindrical lithium batteries, including a base 1, on which a pushing mechanism 2, a central tube feeding mechanism 3 and a self-centering clamping mechanism are sequentially arranged from right to left;

[0027] The pushing mechanism 2 at least includes a linear driving mechanism and a steel needle. The steel needle is pushed by the linear driving structure to make a reciprocating motion in the horizontal direction. The central tube feeding mechanism 3 is used to hold a plurality of central tubes 4. A through groove that can only accommodate a single central tube 4 is opened at the bottom of the central tube feeding mechanism 3. The central tubes 4 sequentially fall into the through groove. An electric core 6 is placed on the self-centering clamping mechanism, and the self-centering clamping mechanism is used to clamp and position the electric core 6 to be inserted into the central tube 4. The central tube 4 is pushed out of the through groove of the central tube feeding mechanism 3 by the steel needle on the pushing mechanism 2 and inserted into the central hole of the electric core 6 to be inserted into the central tube 4 on the self-centering clamping mechanism;

[0028] When inserting the central tube 4, the steel needle on the pushing mechanism 2, the through groove inside the central tube feeding mechanism 3 and the central hole on the electric core 6 are located at the same horizontal position.

[0029] In some embodiments, the linear driving mechanism consists of a linear module installed on the base and a servo motor. Driven by the servo motor, the linear module makes a reciprocating motion, and then drives the steel needle to move towards or away from the central tube feeding mechanism 3.

[0030] In some embodiments, the central tube feeding mechanism 3 at least comprises a feeding hopper and a leaking tube part. The leaking tube part is fixedly installed below the feeding hopper. The funnel opening below the feeding hopper only allows a single central tube to pass through. An opening through groove that can only accommodate a single central tube is formed on the leaking tube part. The funnel opening is fixedly installed above the opening through groove, which can ensure that the central tubes are arranged and fed downward one by one into the opening through groove.

[0031] In some embodiments, a positioning mechanism is provided on one side of the battery cell 6 away from the central tube feeding mechanism 3. The positioning mechanism includes a fixed seat 9. The fixed seat 9 is fixedly installed on the base 1. A first cylinder 8 is fixedly installed on the fixed seat 9. A baffle 7 is installed at the telescopic rod of the first cylinder 8. During use, the baffle 7 is pushed by the first cylinder 8 to contact one side of the battery cell 6, so as to position the battery cell 6 and avoid the sliding of the battery cell 6 during the insertion of the central tube.

[0032] Please refer to Figure 3 , in some embodiments, a laser emitter 71 is provided at the central position on the side of the baffle 7 close to the battery cell 6. The laser emitter 71, the steel needle on the pushing mechanism 2, the through groove inside the central tube feeding mechanism 3, and the central hole on the battery cell 6 are at the same horizontal position. The laser emitter 71 can emit laser to detect the position of the central hole of the battery cell 6, detect whether there is a deviation between the central hole of the battery cell 6 and [4], and at the same time, it can also detect whether there is a blockage inside the central hole of the battery cell 6.

[0033] Specifically, the laser emitter 71 is arranged inside the baffle 7. A glass baffle 72 is arranged on the surface of the laser emitter 71. The glass baffle 72 is flush with the surface of the baffle 7. While ensuring the normal measurement of the laser emitter 71, it can also protect the laser emitter 71 to prevent the central tube 4 from being inserted onto the laser emitter 71.

[0034] Working principle of a central tube insertion device for cylindrical lithium batteries: First, place the central tube 4 to be inserted inside the central tube feeding mechanism 3. The feeding funnel and funnel part inside the central tube feeding mechanism 3 ensure that the central tubes 4 drop one by one. Then, use a mechanical gripper to place the battery cell 6 to be inserted with the central tube on the two self-centering clamping mechanism bodies 5. The self-centering clamping mechanism body 5 can clamp battery cells 6 with different diameters and ensure that the position of the central hole of the battery cell 6 is at the same horizontal position as the opening through slot of the central tube feeding mechanism 3. Then, use the first cylinder 8 to push the baffle 7 into contact with one side of the battery cell 6 to position the battery cell 6 and prevent the battery cell 6 from sliding during the insertion of the central tube. Finally, driven by the servo motor, drive the linear module to move back and forth, thereby driving the steel needle to move towards or away from the central tube feeding mechanism 3, pushing the central tube 4 inside the central tube feeding mechanism 3 to extend out of the central tube feeding mechanism 3 and insert into the inside of the battery cell 6 to be inserted with the central tube, achieving the purpose of inserting the central tube into the battery cell 6.

[0035] Please refer to Figure 2 , in some embodiments, the self-centering clamping mechanism includes a self-centering clamping mechanism body 5. An installation groove 52 is formed inside the self-centering clamping mechanism body 5. A second cylinder 59 is arranged at the bottom of the installation groove 52. The telescopic rod of the second cylinder 59 is connected with a telescopic rod 58. The second cylinder 59 can control the telescopic movement of the telescopic rod 58 inside the self-centering clamping mechanism body 5.

[0036] Specifically, a sliding table 51 is installed at the upper end of the telescopic rod 58. The sliding table 51 is in the shape of a frustum of a cone. Rotating wheels 56 are arranged on both sides of the slope of the sliding table 51. The rotating wheels 56 are rotatably connected to a connecting rod 55. The connecting rod 55 is rotatably connected to the upper end inside the installation groove 52. The connecting rod 55 is in an "S" shape; both the connecting rod 55 and the telescopic rod 58 are installed with top rings 54 at the adjacent ends. During the clamping of the battery cell 6, first place the battery cell 6 to be inserted with the central tube between the three top rings 54 on the telescopic rod 58 and the connecting rod 55. Then, drive the telescopic rod 58 to extend by the second cylinder 59, driving the top ring 54 at the top of the telescopic rod 58 to extend upward, and at the same time driving the sliding table 51 on the telescopic rod 58 to move upward. The rotating wheels 56 rotating on the surface of the sliding table 51 drive the connecting rod 55 to rotate at the upper end of the installation groove 52, thereby moving the top rings 54 on the two connecting rods 55 inward. The synchronous movement of the three top rings 54 can achieve centering clamping of the battery cell 6 to be inserted with the central tube, enabling battery cells 6 with different diameters to be at the same central position during the clamping process (as Figure 4 shown, respectively showing the state structure diagrams of this mechanism clamping battery cells 6 with different diameters).

[0037] In some embodiments, an upper limit plate 53 and a lower limit plate 57 are fixedly installed on the inner wall of the installation groove 52. The telescopic rod 58 slides inside the upper limit plate 53 and the lower limit plate 57, which can improve the stability of the telescopic rod 58 during the telescopic process. The upper limit plate 53 and the lower limit plate 57 are respectively located on the upper and lower sides of the sliding table 51, and can also limit the sliding table 51 to prevent the rotating wheel 56 from falling off the inclined surface of the sliding table 51.

[0038] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cylindrical lithium battery center tube insertion device, characterized in that: include: A base, on which a pushing mechanism, a center tube feeding mechanism and a self-centering clamping mechanism are sequentially arranged; The pushing mechanism at least includes a linear drive mechanism and a steel needle, and the linear drive mechanism drives the steel needle to reciprocate in the horizontal direction to push the central tube; The central tube feeding mechanism has an open through slot through which a single central tube passes, so that the central tubes can fall accurately one by one; The self-centering clamping mechanism is used to clamp the battery core and automatically center the center hole of the battery core; Among them, the steel needle, the open slot in the central tube feeding mechanism and the central hole of the battery cell maintain the same horizontal position during insertion.

2. A cylindrical lithium battery center tube insertion device according to claim 1, characterized in that: The linear drive mechanism is composed of a linear module and a servo motor installed on a base, and the servo motor drives the linear module to drive the steel needle to move.

3. A cylindrical lithium battery center tube insertion device according to claim 1, characterized in that: The central tube feeding mechanism comprises a feeding funnel and a tube leakage part, wherein the tube leakage part has an open through groove that only allows a single central tube to pass through.

4. A cylindrical lithium battery center tube insertion device according to claim 1, characterized in that: It also includes a positioning mechanism, which includes a fixing seat, which is fixedly installed on the base, and a first cylinder is fixedly installed on the fixing seat. A baffle is installed at the telescopic rod of the first cylinder to contact the side of the battery cell for positioning.

5. A cylindrical lithium battery center tube insertion device according to claim 4, characterized in that: A laser transmitter is built into the center of the baffle to detect the position deviation of the center hole of the battery cell.

6. A cylindrical lithium battery center tube insertion device according to claim 5, characterized in that: The laser emitter is arranged inside the baffle, and a glass baffle is arranged on the surface of the laser emitter.

7. A cylindrical lithium battery center tube insertion device according to claim 1, characterized in that: The self-centering clamping mechanism comprises a self-centering clamping mechanism body, a mounting groove is provided inside the self-centering clamping mechanism body, a second cylinder is provided at the bottom of the mounting groove, and a telescopic rod of the second cylinder is connected to a telescopic rod.

8. A cylindrical lithium battery center tube insertion device according to claim 7, characterized in that: A slide is installed at the upper end of the telescopic rod, and rotating wheels are arranged on both sides of the slope of the slide. The rotating wheels move on the connecting rod, and the connecting rod is rotatably connected at the upper end inside the installation groove. A top ring is installed at one end of the connecting rod and the telescopic rod.

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