Automatic pin inserting and removing mechanism for lithium battery welding

Abstract

The utility model relates to the technical field of lithium battery welding, in particular to a lithium battery welding automatic pin inserting and removing mechanism which comprises a machine body, a first lower pressing plate is arranged on the machine body in a sliding mode, a second lower pressing plate is further arranged on the machine body in a sliding mode, and a moving assembly used for driving the first lower pressing plate to move is arranged on the machine body. A welding pin is rotationally arranged on the lower pressing plate II, and a driving assembly for driving the welding pin to rotate is arranged on the lower pressing plate II; an electrode I is arranged on the machine body, and an electrode II is arranged on the lower pressing plate II; the welding device has the beneficial effects that after the welding operation is finished, the driving assembly drives the welding needle to rotate, so that the welding needle is separated from a welding position; namely, after welding is finished, the driving assembly drives the welding needle to rotate so as to remove the needle, and the situation that the battery cell shell deforms when the welding needle moves is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery welding technical field, concretely relates to a lithium battery welding automatic needle inserting and needle removing mechanism. BACKGROUND

[0002] With the rapid development of science and technology, the automation equipment technology in the cylindrical lithium battery manufacturing process is also constantly improving. In the production process of lithium battery, the point bottom welding process is one of the key links of the cell assembly. The traditional point bottom welding process usually adopts the manual needle inserting welding mode, which not only is inefficient, but also is difficult to guarantee the welding quality, and cannot meet the demand of large-scale production.

[0003] In order to overcome the shortcomings of manual needle inserting welding, in recent years, automatic needle inserting welding technology emerges as the times require. The automatic needle inserting welding technology realizes the automatic insertion and welding of the welding needle through the automatic equipment, greatly improves the production efficiency, and guarantees the consistency of the welding quality. However, in the actual application, the automatic needle inserting welding technology also faces some challenges.

[0004] Among them, the phenomenon that the welding needle is bonded to the cell shell bottom is a main problem in the automatic needle inserting welding technology. In the automatic needle inserting welding process, after the welding needle is inserted into the cell shell bottom, due to the high temperature and pressure in the welding process, the welding needle is easy to be bonded to the cell shell bottom. When the welding needle falls off from the cell shell bottom, a concave deformation is left on the cell shell bottom, which not only affects the appearance quality of the cell, but also may have adverse effects on the performance of the cell.

[0005] Therefore, a lithium battery welding automatic needle inserting and needle removing mechanism is needed to overcome the occurrence of the above problems. UTILITY MODEL CONTENTS

[0006] In order to solve the above problems, the utility model embodiment provides a lithium battery welding automatic needle inserting and needle removing mechanism, which realizes the purpose of solving the problems proposed in the background technology.

[0007] In order to realize the above purpose, the utility model embodiment specifically adopts the following technical scheme: a lithium battery welding automatic needle inserting and needle removing mechanism, comprising a machine body, a lower pressing plate one is slidably arranged on the machine body, a lower pressing plate two is also slidably arranged on the machine body, a moving assembly for driving the lower pressing plate one to move is arranged on the machine body;

[0008] A welding needle is rotatably arranged on the lower pressing plate two, and a driving assembly for driving the welding needle to rotate is arranged on the lower pressing plate two.

[0009] An electrode one is arranged on the machine body, and an electrode two is arranged on the lower pressing plate two.

[0010] As a further improvement of the above technical scheme:

[0011] The electrode two is provided with a base for placing the battery shell.

[0012] The moving assembly comprises an electric push rod one mounted on the body, an electric push rod two mounted on a piston rod of the electric push rod one, and the lower pressing plate one is fixed at an end of the piston rod of the electric push rod two.

[0013] The driving assembly comprises a motor mounted on the lower pressing plate two, a synchronous wheel one fixedly connected with the welding needle, a synchronous wheel two fixedly connected with an output end of the motor, and a synchronous belt arranged outside the synchronous wheel one and the synchronous wheel two.

[0014] The body is provided with a guide rail, and the lower pressing plate one and the lower pressing plate two are slidably arranged on the guide rail.

[0015] The body is fixedly connected with a fixing frame below the lower pressing plate two, and a spring is arranged between the fixing frame and the lower pressing plate two.

[0016] The embodiment of the utility model has the advantages of:

[0017] In actual use, the battery shell is placed above the electrode two, and then the moving assembly pushes the lower pressing plate one to move downwards, and when the lower pressing plate one contacts the lower pressing plate two, the lower pressing plate two is pushed to move, so that the welding needle moves downwards and abuts against the battery shell, at this time, the welding needle is connected with the electrode one, and the battery shell is connected with the electrode two, so that the welding work of the welding needle can be started; after the welding work is completed, the driving assembly drives the welding needle to rotate, so that the welding needle is separated from the welding position, at this time, the moving assembly is reset, and one welding action can be completed; that is, after the welding is completed, the welding needle is separated by rotating the welding needle through the driving assembly, so that the battery shell is prevented from being deformed when the welding needle moves. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model.

[0019] In the figure: 1, body; 2, lower pressing plate one; 3, lower pressing plate two; 4, moving assembly; 5, welding needle; 6, driving assembly; 7, electrode one; 8, electrode two; 9, base; 10, guide rail; 11, fixing frame; 12, spring;

[0020] 41, electric push rod one; 42, electric push rod two;

[0021] 61, motor; 62, synchronous wheel one; 63, synchronous wheel two; 64, synchronous belt. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0023] Referring to Figure 1 The embodiment of the present application discloses a lithium battery welding automatic pin inserting and pin removing mechanism, which comprises a machine body 1, a lower pressing plate one 2 is slidably arranged on the machine body 1, a lower pressing plate two 3 is also slidably arranged on the machine body 1, and a moving assembly 4 for driving the lower pressing plate one 2 to move is arranged on the machine body 1.

[0024] A welding pin 5 is rotatably arranged on the lower pressing plate two 3, and a driving assembly 6 for driving the welding pin 5 to rotate is arranged on the lower pressing plate two 3.

[0025] An electrode one 7 is arranged on the machine body 1, and an electrode two 8 is arranged on the lower pressing plate two 3.

[0026] In actual use, the battery core shell is placed above the electrode two 8, and then the moving assembly 4 pushes the lower pressing plate one 2 to move downwards, when the lower pressing plate one 2 contacts the lower pressing plate two 3, the lower pressing plate two 3 is pushed to move, so that the welding pin 5 moves downwards and abuts against the battery core shell, at this time, the welding pin 5 is connected with the electrode one 7, and the battery core shell is connected with the electrode two 8, so that the welding operation of the welding pin 5 can be started; after the welding operation is completed, the driving assembly 6 drives the welding pin 5 to rotate, so that the welding pin 5 is separated from the welding position, at this time, the moving assembly 4 is reset, and one welding action can be completed; that is, after the welding is completed, the rotation of the welding pin 5 driven by the driving assembly 6 is used to remove the pin, so that the battery core shell is prevented from being deformed when the welding pin 5 moves.

[0027] As a further description of the present application:

[0028] A base 9 for placing the battery core shell is arranged above the electrode two 8, the battery core shell is fixed and positioned by the base 9, so that the battery core shell is prevented from deviating during welding.

[0029] As a further description of the present application:

[0030] The moving assembly 4 comprises an electric push rod one 41 installed on the machine body 1, an electric push rod two 42 installed on the piston rod of the electric push rod one 41, and the lower pressing plate one 2 is fixed at the piston rod end of the electric push rod two 42.

[0031] In actual use, the electric push rod one 41 first pushes the lower pressing plate one 2 and the lower pressing plate two 3 to move, when the welding needle 5 is about to contact the battery shell, at this time, the electric push rod two 42 continues to move the lower pressing plate one 2 through the welding needle 5, so that the welding needle 5 abuts on the battery shell; by arranging two electric push rods, the stroke of the electric push rod one 41 is larger, which drives the lower pressing plate one 2 to move greatly, the stroke of the electric push rod two 42 is smaller, but the control precision is higher, which drives the lower pressing plate one 2 to move a small distance accurately, so that the welding needle 5 is abutted on the battery shell.

[0032] As a further description of the present application:

[0033] The driving assembly 6 comprises a motor 61 mounted on the lower pressing plate two 3, a synchronous pulley one 62 fixedly connected with the welding needle 5, a synchronous pulley two 63 fixedly connected with the output end of the motor 61, and a synchronous belt 64 arranged outside the synchronous pulley one 62 and the synchronous pulley two 63.

[0034] After the welding operation is completed, the motor 61 is started to drive the synchronous pulley two 63 to rotate, and then the synchronous pulley one 62 is driven to rotate through the synchronous belt 64, so that the welding needle 5 is driven to rotate.

[0035] As a further description of the present application:

[0036] The machine body 1 is provided with a guide rail 10, and the lower pressing plate one 2 and the lower pressing plate two 3 are slidably arranged on the guide rail 10, so that the lower pressing plate one 2 and the lower pressing plate two 3 can stably slide on the machine body 1.

[0037] As a further description of the present application:

[0038] The machine body 1 is fixedly connected with a fixed frame 11 located below the lower pressing plate two 3, and a spring 12 is arranged between the fixed frame 11 and the lower pressing plate two 3.

[0039] After the welding operation is completed, the moving assembly 4 drives the lower pressing plate one 2 to reset, at this time, since the welding needle 5 is adhered to the battery shell, the lower pressing plate two 3 cannot move, and after the welding needle 5 is rotated to complete the needle removal through the driving assembly 6, the lower pressing plate two 3 is reset under the elastic force of the spring 12.

[0040] It should be noted that in the description of the present application, the terms "center, upper, lower, left, right, vertical, horizontal, inner, outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, it also needs to be explained that, in the description of the utility model, unless there is another explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0042] The term "comprising" or any other similar word is intended to cover non-exclusive inclusion, so that the process, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles or equipment / devices.

[0043] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without deviating from the principles of the utility model, and the technical schemes after these changes or replacements will fall within the protection scope of the utility model.

Claims

1. A lithium battery welding automatic pin inserting and ejecting mechanism, characterized in that, Including body (1), the body (1) is provided with the lower plate one (2) on the sliding, the body (1) is also provided with the lower plate two (3) on the sliding, the body (1) is provided with the movement assembly (4) for driving lower plate one (2) moves; The lower plate two (3) is provided with the welding needle (5) on the rotation, the lower plate two (3) is provided with the drive assembly (6) for driving welding needle (5) rotates; The body (1) is provided with electrode one (7), and the lower plate two (3) is provided with electrode two (8).

2. The lithium battery welding auto pin insertion and ejection mechanism according to claim 1, wherein, The upper portion of electrode two (8) is provided with the base (9) for placing the shell of electric core.

3. The lithium battery welding auto pin insertion and ejection mechanism according to claim 1, wherein, The movement assembly (4) includes electric push rod one (41) installed on the body (1), electric push rod two (42) installed on the piston rod of electric push rod one (41), and the lower plate one (2) is fixed on the piston rod end of electric push rod two (42).

4. The lithium battery welding auto pin insertion and ejection mechanism according to claim 1, wherein, The drive assembly (6) includes motor (61) installed on the lower plate two (3), synchronous pulley one (62) fixedly connected with the welding needle (5), synchronous pulley two (63) fixedly connected on the output end of motor (61), and synchronous belt (64) arranged outside the synchronous pulley one (62) and the synchronous pulley two (63).

5. The lithium battery welding auto pin insertion and ejection mechanism according to claim 1, wherein, The body (1) is provided with guide rail (10), and the lower plate one (2) and the lower plate two (3) are both provided on the guide rail (10) on the sliding.

6. The lithium battery welding auto pin insertion and ejection mechanism according to claim 1, wherein, The body (1) is fixedly connected with the fixed frame (11) below the lower plate two (3), and the spring (12) is arranged between the fixed frame (11) and the lower plate two (3).

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