Large cylindrical roll core through hole device and lithium ion battery with same

Abstract

The utility model belongs to the technical field of lithium battery production, particularly relates to a large cylindrical roll core through hole device and a lithium ion battery with the same, and aims to solve the problems that in the prior art, large cylindrical batteries, especially roll cores of 40 and 46 model negative electrodes, need bottom ultrasonic welding or electric resistance welding. In order to solve the problem that a central hole of a cylindrical winding core is particularly easily blocked by diffusion of a diaphragm in the winding process, the utility model provides the following scheme: the device comprises a base; the console is fixedly connected to the top of the base; the guide rail is fixedly connected to the top of the base; the guide rail is fixedly connected to the top of the base, the sliding table is connected to the top of the guide rail in a sliding mode, the top of the sliding table is fixedly connected with a servo motor, the servo motor is located on the left side of the control table, the top of the base is fixedly connected with a roll core base, and the top of the base is fixedly connected with a heating bag telescopic air cylinder. Meanwhile, labor force is reduced, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a large cylindrical core through-hole device and a lithium-ion battery having the same. Background Technology

[0002] In the current technology, with the booming lithium-ion battery energy storage market, large cylindrical lithium batteries are highly favored. In the manufacturing process of lithium batteries, in addition to process control, trial production is also necessary during the experimental stage to test performance and identify problems. The winding quality of the internal core directly affects the performance of the produced battery. Large cylindrical batteries, especially the 40 and 46 models, require bottom ultrasonic welding or resistance welding of the core for the negative electrode. During the winding process, the central hole of the cylindrical core is particularly prone to being blocked by the separator. This occurs because tension fluctuations in the separator after winding cause it to loosen, blocking the central hole and preventing the welding needle from passing through the central hole for ultrasonic welding or resistance welding in the subsequent bottom shell welding process. Therefore, whether the separator inside the core blocks the central hole is of paramount importance.

[0003] Therefore, this application proposes a large cylindrical core through-hole device and a lithium-ion battery having the same, to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where large cylindrical batteries, especially 40 and 46 model batteries, require bottom ultrasonic welding or resistance welding of the core. During the winding process, the central hole of the cylindrical core is easily blocked by the diffusion of the separator. Therefore, this invention proposes a through-hole device for large cylindrical cores and a lithium-ion battery with the same device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for through-holes in a large cylindrical core includes a base;

[0007] A control console, which is fixedly connected to the top of the base;

[0008] A guide rail, which is fixedly connected to the top of the base;

[0009] A slide table is slidably connected to the top of a guide rail, and a servo motor is fixedly connected to the top of the slide table. The servo motor is located on the left side of the control console.

[0010] In a preferred embodiment of this utility model, a core base is fixedly connected to the top of the base.

[0011] As a preferred embodiment of this utility model, a heating pack telescopic cylinder is fixedly connected to the top of the base, and a heating pack is fixedly connected to the output end of the heating pack telescopic cylinder.

[0012] As a preferred embodiment of this utility model, a hot-hole needle telescopic cylinder is fixedly connected to the top of the base.

[0013] In a preferred embodiment of this utility model, a connecting block is fixedly connected to the left side of the slide, and a floating joint is fixedly connected to the right side of the connecting block. The floating joint is connected to the telescopic cylinder of the heating pack.

[0014] As a preferred embodiment of this utility model, a lifting cylinder is fixedly connected to the top of the core base, and a gripper cylinder is provided at the output end of the lifting cylinder, and a cylindrical core is provided inside the gripper cylinder.

[0015] As a preferred embodiment of this utility model, the hot-hole needle telescopic cylinder is provided with a hot-hole needle, and one end of the hot-hole needle is fixedly connected to the output shaft of the servo motor.

[0016] As a preferred embodiment of this utility model, the heating pack is provided with a heating wire, and the temperature of the heating wire is 70-80℃.

[0017] As a preferred embodiment of this utility model, the heating pack is equipped with a temperature controller, and the temperature controller is matched with the heating wire.

[0018] A lithium-ion battery including a large cylindrical core, comprising an energy storage cylindrical battery with a cylindrical core, wherein the diameter of the energy storage cylindrical battery is 40 mm or 46 mm. Beneficial effects

[0019] 1. Improve the efficiency of the winding process and reduce production costs;

[0020] 2. Improve the welding effect of the core and increase the yield rate of batteries.

[0021] In this utility model: the device is easy to operate and simple to manufacture, improves efficiency, and at the same time reduces manpower and production costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the large cylindrical core through-hole device of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the energy storage cylindrical battery of this utility model;

[0024] Figure 3 This is a schematic diagram of the cylindrical core winding structure of this utility model.

[0025] In the diagram: 1. Servo motor; 2. Hot-drilling needle; 3. Heating pack; 4. Lifting cylinder; 5. Gripper cylinder; 6. Control console; 7. Cylindrical winding core; 8. Winding core base; 9. Hot-drilling needle telescopic cylinder; 10. Guide rail; 11. Heating pack telescopic cylinder; 12. Floating joint; 13. Connecting block; 14. Slide table; 15. Base; 16. Energy storage cylindrical battery. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0027] Reference Figures 1-3 A large cylindrical core through-hole device, including a base 15;

[0028] Console 6 is fixedly connected to the top of base 15;

[0029] Guide rail 10 is fixedly connected to the top of base 15;

[0030] The slide table 14 is slidably connected to the top of the guide rail 10, and a servo motor 1 is fixedly connected to the top of the slide table 14. The servo motor 1 is located on the left side of the control console 6.

[0031] As a preferred embodiment of this utility model, a core base 8 is fixedly connected to the top of the base 15.

[0032] As a preferred embodiment of this utility model, a heating pack telescopic cylinder 11 is fixedly connected to the top of the base 15, and a heating pack 3 is fixedly connected to the output end of the heating pack telescopic cylinder 11.

[0033] As a preferred embodiment of this utility model, a hot-hole needle telescopic cylinder 9 is fixedly connected to the top of the base 15.

[0034] As a preferred embodiment of this utility model, a connecting block 13 is fixedly connected to the left side of the slide table 14, and a floating joint 12 is fixedly connected to the right side of the connecting block 13. The floating joint 12 is connected to the heating pack telescopic cylinder 11.

[0035] As a preferred embodiment of this utility model, a lifting cylinder 4 is fixedly connected to the top of the core base 8, and a gripper cylinder 5 is provided at the output end of the lifting cylinder 4. A cylindrical core 7 is provided inside the gripper cylinder 5. The cylindrical core 7 is the electrode sheet of the positive and negative electrodes inside the cell of the energy storage cylindrical battery.

[0036] As a preferred embodiment of this utility model, the hot-hole needle telescopic cylinder 9 is provided with a hot-hole needle 2, and one end of the hot-hole needle 2 is fixedly connected to the output shaft of the servo motor 1. The hot-hole needle 2 is a cylindrical, slender stainless steel needle with a pointed tip, which can be inserted into the diaphragm gap of the central hole of the cylindrical core 7 without damaging the internal structure of the cylindrical core 7.

[0037] As a preferred embodiment of this utility model, the heating pack 3 is provided with a heating wire, and the temperature of the heating wire is 70-80℃.

[0038] As a preferred embodiment of this utility model, the heating pack 3 is equipped with a temperature controller, and the temperature controller is matched with the heating wire.

[0039] A lithium-ion battery including a large cylindrical core, comprising an energy storage cylindrical battery 16 with a cylindrical core 7, wherein the diameter of the energy storage cylindrical battery 16 is 40 mm or 46 mm.

[0040] The working principle of this utility model is as follows: When the equipment is working, the control console 6 first retracts the heating needle 2 and powers the heating pack 3 to heat the heating needle 2. At this time, the lifting cylinder 4 rises, and the gripper cylinder 5 opens. During heating, the temperature is detected by the temperature controller. When the internal temperature rises to between 80-90℃, the power is cut off and the device enters a heat preservation state. At this time, the cylindrical core 7, whose internal central hole is blocked by the diaphragm diffusion, is placed into the gripper of the gripper cylinder 5. The control console 6 vents the gripper cylinder 5 to clamp the cylindrical core 7. The control console 6 then lowers the lifting cylinder 4. After the cylindrical core 7 falls, it lands in the core base 8. The core base 8 is a V-shaped contour block that can triangularly fix the cylindrical core 7 and keep the cylindrical core in place. The height of the center hole of the core 7 is the same as the height of the hot-hole needle 2. Then, the heated hot-hole needle 2 is extended through the guide rail 10 and inserted into the center hole of the cylindrical core 7 at the same height as the hot-hole needle 2 by the hot-hole needle telescopic cylinder 9. After the hot-hole needle 2 is inserted into the center hole of the cylindrical core 7, the servo motor 1 is turned on to make it rotate clockwise along the winding direction of the cylindrical core 7. While rotating, the internally diffused diaphragm is heated and shaped to achieve the purpose of expanding the hole. Finally, after completion, all parts are returned to their original positions, and the heating pack telescopic cylinder 11 is used to retract the heating pack 3 back to the front end of the hot-hole needle 2. The purpose is to keep the front end of the hot-hole needle 2 at a constant temperature. By operating in the above way, the internally diffused diaphragm of the cylindrical core 7 can be quickly shaped and shaped.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for through-holes in large cylindrical cores, characterized in that, include Base (15); The console (6) is fixedly connected to the top of the base (15); Guide rail (10), which is fixedly connected to the top of base (15); A slide (14) is slidably connected to the top of the guide rail (10), and a servo motor (1) is fixedly connected to the top of the slide (14), the servo motor (1) being located on the left side of the control console (6).

2. The large cylindrical core through-hole device according to claim 1, characterized in that, The top of the base (15) is fixedly connected to the core base (8).

3. The large cylindrical core through-hole device according to claim 1, characterized in that, The top of the base (15) is fixedly connected to a heating pack telescopic cylinder (11), and the output end of the heating pack telescopic cylinder (11) is fixedly connected to a heating pack (3).

4. The large cylindrical core through-hole device according to claim 1, characterized in that, The top of the base (15) is fixedly connected to a hot-hole needle telescopic cylinder (9).

5. The large cylindrical core through-hole device according to claim 1, characterized in that, A connecting block (13) is fixedly connected to the left side of the slide (14), and a floating joint (12) is fixedly connected to the right side of the connecting block (13). The floating joint (12) is connected to the heating pack telescopic cylinder (11).

6. The large cylindrical core through-hole device according to claim 2, characterized in that, The top of the core base (8) is fixedly connected to a lifting cylinder (4), and the output end of the lifting cylinder (4) is provided with a gripper cylinder (5), and a cylindrical core (7) is provided inside the gripper cylinder (5).

7. The large cylindrical core through-hole device according to claim 4, characterized in that, The hot-hole needle telescopic cylinder (9) is equipped with a hot-hole needle (2), and one end of the hot-hole needle (2) is fixedly connected to the output shaft of the servo motor (1).

8. The large cylindrical core through-hole device according to claim 3, characterized in that, The heating pack (3) is equipped with a heating wire, and the temperature of the heating wire is 70-80℃.

9. A large cylindrical core through-hole device according to claim 8, characterized in that, The heating pack (3) is equipped with a temperature controller, which works in conjunction with the heating wire.

10. A lithium-ion battery having a large cylindrical core through-hole device as described in any one of claims 1-9, characterized in that, It includes a cylindrical energy storage battery (16) with a cylindrical core (7) and the diameter of the cylindrical energy storage battery (16) is 40 mm or 46 mm.

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