Battery cell shaping and rounding mechanism

Abstract

The utility model discloses a battery cell shaping and rounding mechanism, and relates to the technical field of battery cell shaping. The vertical plate and the tab sensing assembly are arranged on the two sides of a battery cell respectively; a lifting linear guide rail is arranged on the front face of the vertical plate in the length direction, a mounting plate is arranged on the lifting linear guide rail, the mounting plate perpendicularly penetrates through the vertical plate and can vertically slide along the lifting linear guide rail, a rolling driving device is mounted at the penetrating-out end of the mounting plate, and a rolling driving roller parallel to a battery cell is arranged at the bottom of the mounting plate. The output end of the rolling driving device is connected with the rolling driving roller, a parallel clamping air cylinder is installed at the top of the installation plate, two clamping jaws of the parallel clamping air cylinder downwards penetrate through the installation plate and are located on the two sides of the rolling driving roller, a rolling clamping roller is arranged on the clamping jaws and located below the rolling driving roller, and a lifting air cylinder is installed on the back face of the vertical plate. And the output end of the lifting cylinder is connected with the rolling driving device. According to the utility model, the cylindrical battery cell can be automatically shaped and rounded, and the shaping quality and the shaping efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell shaping, in particular to a battery cell shaping and rounding mechanism. Background Art

[0002] When manufacturing cylindrical lithium batteries, the positive electrode sheet, negative electrode sheet and separator need to be stacked together and wound into a cylindrical battery cell by the winding method. The cylindrical battery cell needs to be shaped and rounded before it can be installed in a metal casing to ensure the cylindricity of the outer shape of the cylindrical battery cell. The shaping method of the prior art is that manually, two semi-circular groove molds, upper and lower, are pressed on the battery cell to shape the outer shape of the battery cell. However, since this operation method is carried out manually, the shaping quality of the battery cell cannot be well ensured, and the shaping efficiency is low. Therefore, there is an urgent need to provide a battery cell shaping and rounding mechanism. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a battery cell shaping and rounding mechanism which can automatically shape and round a cylindrical battery cell through a rounding drive roller and a rounding clamping roller, improving the shaping quality and shaping efficiency.

[0004] To solve the above technical problem, the utility model adopts the following technical solutions:

[0005] A battery cell shaping and rounding mechanism includes vertical plates and tab induction components respectively arranged on both sides of the battery cell; a lifting linear guide rail is arranged on the front of the vertical plate along the length direction, and a mounting plate is arranged on the lifting linear guide rail. The mounting plate vertically passes through the vertical plate and can slide up and down along the lifting linear guide rail. A rounding drive device is installed at the penetrating end of the mounting plate. A rounding drive roller parallel to the battery cell is arranged at the bottom of the mounting plate. The output end of the rounding drive device is connected to the rounding drive roller. A parallel clamping cylinder is installed at the top of the mounting plate. The two clamping claws of the parallel clamping cylinder pass through the mounting plate downward and are located on both sides of the rounding drive roller. Rounding clamping rollers are arranged below the rounding drive roller on the clamping claws. A lifting cylinder is installed on the back of the vertical plate, and the output end of the lifting cylinder is connected to the rounding drive device; the tab induction component is used to detect the position of the battery cell tab, and the rounding drive device controls the start and stop of the rounding drive roller according to the judgment of the tab induction component.

[0006] In some embodiments, the tab induction component includes a tab inductor and an inductor cylinder. The inductor cylinder is installed on one side of the battery cell through a support seat, and a U-shaped bracket is arranged at the output end of the inductor cylinder. The tab inductor is installed on the U-shaped bracket, and the inductor cylinder is used to drive the U-shaped bracket and the tab inductor to move close to the battery cell tab.

[0007] Compared with the prior art, the utility model at least achieves the following beneficial effects:

[0008] The utility model drives a round rolling driving device, a mounting plate, a parallel clamping cylinder, a round rolling driving roller and a round rolling clamping roller to move downward through a lifting cylinder. Two clamping jaws clamp the battery cell and press it against the round rolling driving roller. The tab induction assembly is used to detect the position of the tab. The round rolling driving roller drives the cylindrical battery cell to rotate. At the same time, in cooperation with two round rolling clamping rollers, the outer surface of the battery cell is automatically rolled and rounded. The round rolling driving device can control the round rolling driving roller to drive the battery cell to rotate a specified number of turns or an angle and then stop working according to the judgment of the tab induction assembly, ensuring the shaping effect and quality of the battery cell. The structure of the utility model is simple and compact, saving space and improving the shaping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] One or more embodiments of the present utility model will now be described by way of example only with reference to the accompanying drawings, in which:

[0010] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0011] Figure 2 is Figure 1 the front view of the embodiment;

[0012] Figure 3 is Figure 1 the right view of the embodiment;

[0013] Figure 4 is Figure 1 the top view of the embodiment.

[0014] The reference numerals in the drawings are: 1, vertical plate; 11, sliding opening; 12, connecting ear; 121, limit bolt; 2, tab induction assembly; 21, tab inductor; 22, inductor cylinder; 221, U-shaped bracket; 3, lifting linear guide rail; 31, guide rail body; 32, slider; 33, sliding seat; 4, mounting plate; 5, round rolling driving device; 6, round rolling driving roller; 7, parallel clamping cylinder; 71, clamping jaw; 8, round rolling clamping roller; 9, lifting cylinder; 10, battery cell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be described in detail below with reference to the exemplary embodiments in the drawings. It should be understood, however, that the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0016] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meanings of "several" and "multiple" are two or more, unless otherwise specifically and clearly defined. In the present application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0017] As Figures 1 to 4 shown, in an embodiment of the present utility model, the core shaping and rounding mechanism includes vertical plates 1 and tab induction components 2 respectively arranged on both sides of the core 10. Among them:

[0018] A lifting linear guide rail 3 is provided along the length direction on the front side of the vertical plate 1. An installation plate 4 is arranged on the lifting linear guide rail 3. The installation plate 4 is located above the battery cell 10. The installation plate 4 vertically penetrates through the vertical plate 1 and can slide up and down along the lifting linear guide rail 3. A rolling circle driving device 5 is installed at the penetrating end of the installation plate 4. A rolling circle driving roller 6 parallel to the battery cell 10 is arranged at the bottom of the installation plate 4. The rolling circle driving device 5 is a servo motor. The output end of the rolling circle driving device 5 is connected to the rolling circle driving roller 6, which is used to drive the rolling circle driving roller 6 to rotate. A parallel clamping cylinder 7 is installed at the top of the installation plate 4. The two clamping jaws 71 of the parallel clamping cylinder 7 penetrate downward through the installation plate 4 and are located on both sides of the rolling circle driving roller 6. Rolling circle clamping rollers 8 are arranged on the two clamping jaws 71 below the rolling circle driving roller 6, so that the two rolling circle clamping rollers 8 and the rolling circle driving roller 6 are distributed in a triangle. The two clamping jaws 71 of the parallel clamping cylinder 7 can adjust the clamping distance according to the diameter size of the battery cell 10 to adjust the size of the inscribed circle between the two rolling circle clamping rollers 8 and the rolling circle driving roller 6, and it can be applicable to the rolling circle processing of most medium and small cylindrical battery cells on the market, including but not limited to 18650 lithium battery cells; A lifting cylinder 9 is installed on the back side of the vertical plate 1. The output end of the lifting cylinder 9 is connected to the rolling circle driving device 5.

[0019] The tab induction assembly 2 includes a tab inductor 21 and an inductor cylinder 22. The inductor cylinder 22 is installed on one side of the battery cell 10 through a support seat, and a U-shaped bracket 221 is arranged at the output end of the inductor cylinder 22. The tab inductor 21 is installed on the U-shaped bracket 221. The inductor cylinder 22 is used to drive the U-shaped bracket 221 and the tab inductor 21 to move towards the tab of the battery cell 10; The tab inductor 21 is used to detect the position of the tab of the battery cell 10.

[0020] The working principle of the battery cell 10 shaping and rolling circle mechanism is as follows:

[0021] The lifting cylinder 9 descends, thereby driving the rounding drive device 5, the mounting plate 4, the parallel clamping cylinder 7, the rounding drive roller 6 and the rounding clamping roller 8 to move downward, and the two clamping claws 71 clamp the battery cell 10 against the rounding drive roller 6, and the sensor cylinder 22 extends, and the tab sensor 21 approaches the battery cell 10 to detect the position of the tab. When the tab approaches the tab sensor 21, the coil inside the tab sensor 21 will generate an induced current; the output shaft of the rounding drive device 5 rotates, driving the rounding drive roller 6 to drive the cylindrical battery cell 10 to rotate, and at the same time cooperates with the two rounding clamping rollers 8 to roll the outer surface of the battery cell 10 into a full circle; the rounding drive device 5 can drive the rounding drive roller 6 according to the judgment of the tab sensor 21. The battery cell 10 is driven to rotate a certain number of times and then stops working. Specifically, the number of rotations of the battery cell 10 is set according to the rounding accuracy of the battery cell 10 to meet the shaping and rounding effect of the battery cell 10. The position of the tab of the battery cell 10 is detected by the tab sensor 21 to determine the number of rotations of the battery cell 10. After the battery cell 10 rotates a specified number of times, the rounding drive device 5 controls the rounding drive roller 6 to stop working to complete the rounding; then the clamping jaws 71 of the parallel clamping cylinder release the battery cell 10, thereby putting down the battery cell 10; finally, the lifting cylinder 9 rises, driving the rounding drive device 5, the mounting plate 4, the parallel clamping cylinder 7, the rounding drive roller 6 and the rounding clamping roller 8 to move upward and return to the initial position, and the working cycle is completed.

[0022] Optionally, the lifting linear guide rail 3 includes two guide rail bodies 31, a slider 32 slidably connected to the guide rail bodies 31, and a slide seat 33 installed on the slider 32; the mounting plate 4 is fixedly connected to the slide seat 33. A sliding opening 11 is provided between the two guide rail bodies 31 on the vertical plate 1, and the sliding opening 11 is arranged along the length direction of the vertical plate 1; the mounting plate 4 vertically passes through the sliding opening 11 and can slide up and down along the sliding opening 11. By setting the lifting linear guide rail 3, the mounting plate 4, the parallel clamping cylinder 7, the rolling driving roller 6 and the rolling clamping roller 8 can smoothly perform lifting and lowering movements to ensure accuracy.

[0023] Optionally, connecting ears 12 are provided on both sides of the vertical plate 1 below the mounting plate 4, and limiting bolts 121 are threadedly connected to the connecting ears 12. The limiting bolts 121 can adjust the height according to the radial size of the battery cell 10, thereby limiting the lower position of the mounting plate 4.

[0024] It should be understood that all the above embodiments are illustrative rather than restrictive, and any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the conception of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A core shaping and rounding mechanism, characterized in that: It includes vertical plates and ear induction components respectively arranged on both sides of the battery cell; On the front of the vertical plate, a lifting linear guide rail is arranged along the length direction. An installation plate is arranged on the lifting linear guide rail. The installation plate vertically penetrates the vertical plate and can slide up and down along the lifting linear guide rail. A rolling drive device is installed at the penetrating end of the installation plate. A rolling drive roller parallel to the battery cell is arranged at the bottom of the installation plate. The output end of the rolling drive device is connected to the rolling drive roller. A parallel clamping cylinder is installed at the top of the installation plate. The two clamping jaws of the parallel clamping cylinder penetrate the installation plate downward and are located on both sides of the rolling drive roller. Rolling clamping rollers are arranged on the clamping jaws below the rolling drive roller. A lifting cylinder is installed on the back of the vertical plate. The output end of the lifting cylinder is connected to the rolling drive device; The ear induction component is used to detect the position of the battery cell ear, and the rolling drive device controls the start and stop of the rolling drive roller according to the judgment of the ear induction component.

2. The core shaping and rounding mechanism according to claim 1, characterized in that: The ear induction component includes an ear inductor and an inductor cylinder. The inductor cylinder is installed on one side of the battery cell through a support seat, and a U-shaped bracket is arranged at the output end of the inductor cylinder. The ear inductor is installed on the U-shaped bracket. The inductor cylinder is used to drive the U-shaped bracket and the ear inductor to move close to the battery cell ear.

3. The core shaping and rounding mechanism according to claim 1, characterized in that: The lifting linear guide rail includes two guide rail bodies, sliders slidably connected to the guide rail bodies, and sliding seats installed on the sliders; the installation plate is fixedly connected to the sliding seat.

4. The cell shaping and rounding mechanism according to claim 3, wherein: A sliding opening is arranged between the two guide rail bodies on the vertical plate. The sliding opening is arranged along the length direction of the vertical plate; the installation plate vertically penetrates the sliding opening and can slide up and down along the sliding opening.

5. The cell shaping and rounding mechanism according to claim 1, wherein: Connecting ears are arranged on both sides below the installation plate on the vertical plate. Limit bolts are threadedly connected to the connecting ears, and the limit bolts are used for lower limit of the installation plate.

6. The cell shaping and rounding mechanism according to claim 1, characterized in that: The rolling drive device is a servo motor.

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