Battery welding adhesion prevention device and welding equipment

Abstract

The utility model relates to the technical field of welding mechanisms, in particular to a battery welding adhesion prevention device and welding equipment. The welding adhesion prevention device for the battery comprises a belt conveying mechanism and a movement module, the belt conveying mechanism is used for conveying an anti-sticking belt, the anti-sticking belt comprises a working section, the movement module is used for enabling the working section to be switched between an initial station and a welding station, when the working section is located at the welding station, the working section is clamped between a first welding head of welding equipment and a welded piece, the first welding head can be prevented from making direct contact with the welded piece, and the welding efficiency is improved. Therefore, the first welding head is prevented from adhering to the welded part, the finished product quality of the welded part is improved, and the service life of the first welding head is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery welding mechanism, and particularly relates to a battery anti-welding adhesion device and a welding equipment. BACKGROUND

[0002] In the welding process, the welding head is in direct contact with the welded part under certain pressure conditions, and the welding head and the welded part are prone to adhesion. Especially in the battery tab welding process, the battery tab is the output end of the battery internal cell. For example, after the positive tab and the positive tab are welded by the resistance welding process, the welding head may stick to the positive tab when the welding head is lifted, which may cause the positive tab to be torn off and the tail of the positive tab to be lifted, thereby reducing the connection strength of the positive tab and the positive tab and further reducing the quality of the finished product after welding. CONTENT OF THE UTILITY MODEL

[0003] The present application discloses a battery anti-welding adhesion device and a welding equipment, which are used to solve the problem of adhesion between the welding head and the welded part in the welding process.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] In a first aspect, the present application provides a battery anti-welding adhesion device, which comprises a belt feeding mechanism and a movement module. The belt feeding mechanism is used to convey an anti-adhesion belt, and the anti-adhesion belt comprises a working section. The movement module is used to switch the working section between an initial station and a welding station. When the working section is in the welding station, the working section is clamped between a first welding head of a welding equipment and a welded part.

[0006] When the welding equipment is working, the welded part is placed in a preset station, the belt feeding mechanism of the battery anti-welding adhesion device conveys the anti-adhesion belt, and the movement module switches the working section from the initial station to the welding station. When the first welding head welds the welded part, the working section is clamped between the first welding head and the welded part, which can avoid direct contact between the first welding head and the welded part, thereby preventing the first welding head from adhering to the welded part, and further improving the finished product quality of the welded part and the service life of the first welding head.

[0007] In a second aspect, the present application provides a welding equipment, which comprises a first welding head and the battery anti-welding adhesion device of the first aspect. The welding equipment is used to weld a battery tab.

[0008] The welding device provided by the application works as follows: first, the workpiece to be welded is placed in a preset work station, the first welding head is close to the workpiece to be welded, for example, the battery tab, the tape feeding mechanism of the battery anti-welding adhesion device feeds the anti-adhesion tape, the movement module switches the working section from the initial work station to the welding work station, the working section is clamped between the battery tab and the first welding head, when the welding pressure reaches the set value, the welding is started. After the welding is completed, the first welding head returns to the original position, and the movement module makes the working section return from the welding work station to the initial work station. During the welding process, the working section of the anti-adhesion tape can avoid the direct contact between the first welding head and the battery tab, so as to prevent the first welding head from adhering to the battery tab, thereby improving the cleanliness of the surface of the first welding head and the battery tab, avoiding the warping of the battery tab, improving the quality of the finished product of the battery tab, and prolonging the service life of the first welding head. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The working schematic diagram of the battery anti-welding adhesion device of one embodiment of the application is shown in FIG. 1.

[0010] Figure 2 The working schematic diagram of the battery anti-welding adhesion device of one embodiment of the application is shown in FIG. 1.

[0011] Figure 3 The working schematic diagram of the battery anti-welding adhesion device of one embodiment of the application is shown in FIG. 1. Figure 2 The partial enlarged view of A in FIG. 1.

[0012] Figure 4 The working schematic diagram of the battery anti-welding adhesion device of one embodiment of the application is shown in FIG. 1.

[0013] Figure 5 The working schematic diagram of the battery anti-welding adhesion device of one embodiment of the application is shown in FIG. 1.

[0014] Figure 6 The working schematic diagram of the battery anti-welding adhesion device of one embodiment of the application is shown in FIG. 1.

[0015] Figure 7 The partial enlarged view of A in FIG. 1. Figure 6 The partial enlarged view of A in FIG. 1.

[0016] 100-belt feeding mechanism; 110-mounting frame; 120-first roller shaft; 130-second roller shaft; 140-first motor; 150-second motor; 160-third motor; 180-first deflection wheel; 190-second deflection wheel; 200-tensioning mechanism; 210-first tensioning wheel; 220-second tensioning wheel; 300-support frame; 310-first support structure; 311-first frame; 312-first support; 320-second support structure; 321-second frame; 322-second support; 400-motion module; 410-first tensioning mechanism; 411-first spring; 412-first connecting seat; 413-second connecting seat; 420-second tensioning mechanism; 421-second spring; 422-third connecting seat; 423-fourth connecting seat; 430-elastic winding and unwinding mechanism; 431-carriage; 432-clamp spring; 433-fixing rod; 500-anti-sticking tape; 510-working section;

[0017] 10-welding device; 11-first welding head; 12-second welding head; 13-welding head driving device; 20-workpiece. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] In the welding process, the welding head and the workpiece are in direct contact, and under certain pressure conditions, the welding head and the workpiece are prone to sticking.

[0020] Therefore, in the embodiments of the present application, a battery anti-welding sticking device is provided, Figure 1 FIG. 1 is a working schematic diagram of a battery anti-welding sticking device according to an embodiment of the present application, which shows the working process of the battery anti-welding sticking device. Figure 1 The battery anti-welding sticking device includes a belt feeding mechanism 100 and a motion module 400. The belt feeding mechanism 100 is used to convey an anti-sticking tape 500, and the anti-sticking tape 500 includes a working section 510. The motion module 400 is used to switch the working section 510 between an initial station and a welding station. When the working section 510 is in the welding station, the working section 510 is clamped between a first welding head 11 of a welding device 10 and a workpiece 20, thereby preventing the first welding head 11 from directly contacting the workpiece 20, avoiding the sticking of the first welding head 11 and the workpiece 20, and further improving the welding quality and the service life of the first welding head 11.

[0021] It can be understood that the material of the anti-adhesion tape 500 needs to be selected according to the material of the welded part 20 and the welding conditions such as the welding temperature. When selecting the material of the anti-adhesion tape 500, a material that is not easy to adhere to the welded part 20 during the welding process needs to be selected. The melting point of the anti-adhesion tape 500 is usually higher than that of the welded part 20, so as to avoid adhesion to the welded part 20. In addition, the thermal conductivity of the anti-adhesion tape 500 needs to be high, which helps to transfer the heat of the first welding head 11 to the welded part 20. For example, the anti-adhesion tape 500 can be a metal anti-adhesion tape 500.

[0022] When the welded part 20 is the tab and the pole piece of the battery, the preparation material of the tab and the pole piece is mainly metal such as copper and aluminum. Correspondingly, the metal anti-adhesion tape 500 can be selected from a steel tape or a nickel tape. When the anti-adhesion tape 500 adopts the steel tape, the battery anti-welding adhesion device needs to have the ability to peel off the welding mark of the anti-adhesion tape 500 after the welding is completed, and the peeling force is estimated to be about 40 N. When the anti-adhesion tape 500 adopts the nickel tape, the peeling force of the welding mark of the battery anti-welding adhesion device is estimated to be about 15 N after the welding is completed.

[0023] When the welding is completed once, the tape feeding mechanism 100 continues to feed the anti-adhesion tape 500, and the anti-adhesion tape 500 that is the working section 510 before moves to the front, so that the anti-adhesion tape 500 behind serves as the working section 510 in the next welding, avoiding continuous welding of the anti-adhesion tape 500, which is easy to be damaged under the condition of high temperature and high pressure for a long time.

[0024] Of course, according to the actual welding conditions, the anti-adhesion tape 500 can also be continuously fed by the tape feeding mechanism 100 after two or more times of welding, which is specifically set according to the actual situation.

[0025] In an optional scheme of the embodiment, the thickness of the anti-adhesion tape 500 is 0.1-0.3 mm. It can be understood that if the anti-adhesion tape 500 is too thick, it may affect the welding effect; on the contrary, if the anti-adhesion tape 500 is too thin, the mechanical properties of the anti-adhesion tape 500 are poor, and the anti-adhesion tape 500 is easy to be damaged after multiple uses, and cannot be used for a long time.

[0026] Continuing to refer to Figure 1 The battery anti-welding adhesion device also includes a tensioning mechanism 200 for tensioning the working section 510. In the present application, the specific structure of the tensioning mechanism 200 is not limited as long as it can tension the anti-adhesion tape 500.

[0027] In an optional solution of the embodiment, the tensioning mechanism 200 includes a first tensioning wheel 210 and a second tensioning wheel 220, the first tensioning wheel 210 is located at the inner side of the anti-sticking tape 500, the second tensioning wheel 220 is located at the outer side of the anti-sticking tape 500, and the anti-sticking tape 500 is pressed on the first tensioning wheel 210 and the second tensioning wheel 220 respectively, so that the anti-sticking tape 500 is always in a tensioned state.

[0028] In an optional solution of the embodiment, the tape feeding mechanism 100 includes a mounting frame 110, a first roller shaft 120 and a second roller shaft 130 arranged on the mounting frame 110, and the anti-sticking tape 500 is sleeved on the first roller shaft 120 and the second roller shaft 130, and the rotation directions of the first roller shaft 120 and the second roller shaft 130 are the same. Through the rotation of the first roller shaft 120 and the second roller shaft 130, the anti-sticking tape 500 can be driven to move forward.

[0029] It can be understood that the mounting frame 110 can be a separate support or can be integrated on the welding device 10. As shown in Figure 1 , the mounting frame 110 in the embodiment of the application is integrated on the welding device 10, which helps to reduce cost and save space.

[0030] In an optional solution of the embodiment, the first roller shaft 120, the second roller shaft 130, the first tensioning wheel 210 and the second tensioning wheel 220 are all provided with a protective film, which is used to reduce friction and avoid the generation of dust and other impurities in the friction process. Especially when the anti-sticking tape 500 is a metal anti-sticking tape 500, if the friction is too large, metal dust may be generated from the metal anti-sticking tape 500 and fall onto the surface of the workpiece 20, which may affect the quality of the workpiece 20.

[0031] The material of the protective film is a non-metal material, for example, the material of the protective film can be silica gel, polyethylene, rubber, polyurethane, etc.

[0032] Of course, the first roller shaft 120, the second roller shaft 130, the first tensioning wheel 210 and the second tensioning wheel 220 can also be integrally made of silica gel material.

[0033] Figure 2 is a working schematic view of the battery anti-welding and sticking device according to an embodiment of the application, referring to Figure 2 , the tape feeding mechanism 100 further includes a first motor 140 and a second motor 150, the output shaft of the first motor 140 is in transmission connection with the first roller shaft 120, and the first motor 140 is used to drive the first roller shaft 120 to rotate. The output shaft of the second motor 150 is in transmission connection with the second roller shaft 130, and the second motor 150 is used to drive the second roller shaft 130 to rotate.

[0034] It can be understood that the anti-adhesion tape 500 in the present application can be recycled or not. Because the number of welding times is large, in order to save costs, the anti-adhesion tape 500 in the battery anti-welding adhesion device in the present application is a recycled anti-adhesion tape 500.

[0035] In some possible implementation manners, the anti-adhesion tape 500 is an annular anti-adhesion tape 500 sleeved on the first roller shaft 120 and the second roller shaft 130, and can realize recycling of the anti-adhesion tape 500 under the driving of the first roller shaft 120 and the second roller shaft 130.

[0036] In other possible implementation manners, the anti-adhesion tape 500 is a non-annular anti-adhesion tape 500, that is, one end of the anti-adhesion tape 500 is arranged on the first roller shaft 120, and the other end of the anti-adhesion tape 500 is arranged on the second roller shaft 130. One of the first roller shaft 120 and the second roller shaft 130 is used to unwind the anti-adhesion tape 500, and the other is used to wind the anti-adhesion tape 500.

[0037] Continuing to refer to Figure 2 , when the first motor 140 drives the first roller shaft 120 to unwind the anti-adhesion tape 500, the second motor 150 drives the second roller shaft 130 to wind the anti-adhesion tape 500; or, when the second motor 150 drives the second roller shaft 130 to unwind the anti-adhesion tape 500, the first motor 140 drives the first roller shaft 120 to wind the anti-adhesion tape 500, so as to realize recycling of the anti-adhesion tape 500.

[0038] The structures of the tensioning mechanism 200 and the tape feeding mechanism 100 are described above, and the structure and function of the movement module 400 will be described in detail below.

[0039] In some possible implementation manners, the movement module 400 includes a driving mechanism, which is in transmission connection with the tape feeding mechanism 100 and the tensioning mechanism 200, and is used to drive the tape feeding mechanism 100 and the tensioning mechanism 200 to move along a first direction D1, so as to switch the working section 510 between the initial station and the welding station; wherein the first direction D1 is the movement direction of the first welding head 11.

[0040] Specifically, the driving mechanism can be in transmission connection with the mounting frame 110 of the tape feeding mechanism 100, so as to drive the first roller shaft 120 and the second roller shaft 130 to move along the first direction D1.

[0041] Optionally, the driving mechanism can be a motor or an air cylinder, which is not limited in the present application, as long as it can drive the tape feeding mechanism 100 and the tensioning mechanism 200 to move.

[0042] When the welding device 10 works, the workpiece 20 is placed in the preset work station, the first welding head 11 moves along the first direction D1 to approach the workpiece 20, the conveying mechanism 100 of the battery anti-welding adhesion device conveys the anti-adhesion tape 500, the tensioning mechanism 200 tensions the working section 510 of the anti-adhesion tape 500, the driving mechanism drives the working section 510 to move along the first direction D1, so that the working section 510 is switched from the initial work station to the welding work station, the first welding head 11 holds the workpiece 20 through the working section 510, and the welding is started when the welding pressure reaches the set value.

[0043] After the welding is completed, the first welding head 11 returns to the original position, and the driving mechanism drives the working section 510 to return from the welding work station to the initial work station. During the welding process, the working section 510 of the anti-adhesion tape 500 can avoid the direct contact between the first welding head 11 and the workpiece 20, so as to prevent the first welding head 11 from adhering to the workpiece 20, thereby improving the cleanliness of the surface of the first welding head 11 and the workpiece 20, avoiding the warping of the workpiece 20, prolonging the service life of the first welding head 11, and improving the finished product quality of the workpiece 20.

[0044] In an optional embodiment of the present embodiment, the battery anti-welding adhesion device comprises a support frame 300, and the support frame 300 is used to bear the tensioning mechanism 200.

[0045] Continuing to refer to Figure 2 , the support frame 300 comprises a first support structure 310 and a second support structure 320 which are arranged at intervals, and the number of the tensioning mechanisms 200 is two, wherein one of the tensioning mechanisms 200 is arranged on the first support structure 310, and the other tensioning mechanism 200 is arranged on the second support structure 320, and the anti-adhesion tape 500 between the two tensioning mechanisms 200 is the working section 510.

[0046] In an optional embodiment of the present embodiment, the first support structure 310 comprises a first frame 311 and a first support 312 which is hinged to the first frame 311, and the second support structure 320 comprises a second frame 321 and a second support 322 which is hinged to the second frame 321. One of the tensioning mechanisms 200 is arranged on the first support 312, and the other tensioning mechanism 200 is arranged on the second support 322.

[0047] Continuing to refer to Figure 2 , the battery anti-welding adhesion device in the present application further comprises a first deflection wheel 180 and a second deflection wheel 190, the first deflection wheel 180 is arranged on the first frame 311, and the first deflection wheel 180 is used to change the movement direction of the anti-adhesion tape. The second deflection wheel 190 is arranged on the second frame 321, and the second deflection wheel 190 is used to change the movement direction of the anti-adhesion tape.

[0048] It can be understood that the line direction of the first deflection wheel 180 and the second deflection wheel 190 is perpendicular to the first direction D1.

[0049] Figure 3 For Figure 2 the local enlarged view in FIG. 4, refer to Figure 2 and Figure 3 The movement module 400 includes a first tension mechanism 410 and a second tension mechanism 420, the first tension mechanism 410 is used to adjust a first included angle between the first frame 311 and the first support 312, and the second tension mechanism 420 is used to adjust a second included angle between the second frame 321 and the second support 322, so as to switch the working section 510 between the initial station and the welding station.

[0050] The first included angle can range from 30° to 180°. The second included angle can range from 30° to 180°.

[0051] In an optional solution of the embodiment, the first tension mechanism 410 includes a first spring 411, a first connecting seat 412, and a second connecting seat 413, one end of the first spring 411 is connected with the first connecting seat 412, the other end of the first spring 411 is connected with the second connecting seat 413, the end of the first connecting seat 412 away from the first spring 411 is connected with the first frame 311, and the end of the second connecting seat 413 away from the first spring 411 is connected with the first support 312.

[0052] In an optional solution of the embodiment, the second tension mechanism 420 includes a second spring 421, a third connecting seat 422, and a fourth connecting seat 423, one end of the second spring 421 is connected with the third connecting seat 422, the other end of the second spring 421 is connected with the fourth connecting seat 423, the end of the third connecting seat 422 away from the second spring 421 is connected with the second frame 321, and the end of the fourth connecting seat 423 away from the second spring 421 is connected with the second support 322.

[0053] The structure of the battery anti-welding sticking device when the movement module 400 includes the first tension mechanism 410 and the second tension mechanism 420 is described in detail above, and the working process thereof is described as follows:

[0054] When the welding equipment 10 works, the workpiece 20 is placed at the preset station, the belt conveying mechanism 100 conveys the anti-sticking belt 500, the tensioning mechanism 200 tensions the working section 510 of the anti-sticking belt 500, the first welding head 11 of the welding equipment 10 moves in the first direction, the first welding head 11 contacts and drives the working section 510 to move from the initial station to approach the workpiece 20 after being pressed down, until the working section 510 is clamped between the first welding head 11 and the workpiece 20, that is, the working section 510 is at the welding station, at this time, the first spring 411 and the second spring 421 are in the stretched state, and the welding is started when the welding pressure reaches the set value.

[0055] After the welding is completed, the first welding head 11 returns to the original position, the first welding head 11 is separated from the working section 510 of the anti-adhesion tape 500, and the working section 510 is driven by the first spring 411 and the second spring 421 to return from the welding position to the initial position.

[0056] During the welding process, the working section 510 of the anti-adhesion tape 500 can avoid the direct contact between the first welding head 11 and the workpiece 20, thereby preventing the first welding head 11 from being adhered to the workpiece 20, and further improving the product quality of the workpiece 20 and the service life of the first welding head 11.

[0057] Figure 4 FIG. 4 is a working schematic view of the battery anti-welding adhesion device according to another embodiment of the present application, Figure 5 FIG. 4 is a working schematic view of the battery anti-welding adhesion device according to another embodiment of the present application, Figure 6 FIG. 4 is a working schematic view of the battery anti-welding adhesion device according to another embodiment of the present application, Figure 7 FIG. 4 is a working schematic view of the battery anti-welding adhesion device according to another embodiment of the present application, Figure 6 FIG. 4 is a working schematic view of the battery anti-welding adhesion device according to another embodiment of the present application, Figure 4 to Figure 7 In other possible embodiments of the present application, the movement module 400 can be an elastic winding and unwinding mechanism 430, which is connected with the first roller shaft 120 and is used to control the release or recovery of the anti-adhesion tape 500, so as to switch the anti-adhesion tape 500 between the initial position and the welding position.

[0058] Referring to FIG. 4, Figure 5 The tape feeding mechanism 100 includes a third motor 160, the output shaft of the third motor 160 is connected with the second roller shaft 130, the third motor 160 drives the second roller shaft 130 to rotate to wind the anti-adhesion tape 500, at this time, the elastic winding and unwinding mechanism 430 allows the first roller shaft 120 to rotate synchronously with the second roller shaft 130 under the driving of the anti-adhesion tape 500 to release the anti-adhesion tape 500.

[0059] Referring to FIG. 4, Figure 6 and Figure 7 The elastic winding and unwinding mechanism 430 includes a bracket 431, a clasp spring 432 and a fixing rod 433, the clasp spring 432 surrounds the first roller shaft 120, one end of the clasp spring 432 is connected with the first roller shaft 120, and the other end of the clasp spring 432 is fixed to the fixing rod 433; when the anti-adhesion tape 500 is switched from the initial position to the welding position under the driving of the first welding head 11, the clasp spring 432 is in an elongated or compressed state; after the first welding head 11 is removed, the anti-adhesion tape 500 returns from the welding position to the initial position under the driving of the clasp spring 432.

[0060] The structure of the battery anti-welding adhesion device when the movement module 400 is the elastic winding and unwinding mechanism 430 is described in detail above, and the working process thereof is described as follows:

[0061] When the anti-adhesion tape 500 is in the initial position, the working section 510 is located between the first welding head 11 and the workpiece 20 and does not contact both of them. When the first welding head 11 moves towards the workpiece 20, the first welding head 11 first contacts the working section 510 and drives the working section 510 to move from the initial position to be close to the workpiece 20 until the working section 510 is clamped between the first welding head 11 and the workpiece 20, that is, the working section 510 is in the welding position. At this time, the snap spring 432 is in a stretched or compressed state, and welding is started when the welding pressure reaches a set value.

[0062] After welding is completed, the first welding head 11 returns to the original position, and the first welding head 11 is separated from the working section 510 of the anti-adhesion tape 500. Under the driving of the snap spring 432, the working section 510 returns to the initial position from the welding position.

[0063] Based on the same technical concept, the present application also provides a welding device 10, which will be described in combination with Figure 1 to Figure 7 The welding device 10 includes the first welding head 11 and the battery anti-welding adhesion device in various possible embodiments of the present application, and the welding device is used for welding a battery tab.

[0064] Because the welding device 10 includes the battery anti-welding adhesion device in the present application, the anti-adhesion tape 500 can isolate the workpiece 20 and the first welding head 11 during welding, thereby avoiding adhesion between the first welding head 11 and the workpiece 20, helping to improve the welding quality and prolong the service life of the first welding head 11. The workpiece 20 can be a battery tab, for example, a positive tab or a negative tab.

[0065] In an optional solution of the present application, the welding device 10 includes a welding head driving device 13, wherein the welding head driving device 13 is connected with the first welding head 11 to drive the first welding head 11 to move along the first direction D1.

[0066] In an optional solution of the present application, the welding device 10 includes a rack, and the welding head driving device 13, the mounting rack 110 and the support rack 300 are fixedly arranged on the rack, so that the whole has high integration and occupies less space.

[0067] In an optional solution of the present application, the welding device 10 is a pressure melting welding device. The welding device 10 further includes a second welding head 12, and the first welding head 11 and the second welding head 12 are oppositely arranged along the first direction D1. The workpiece can be placed on the surface of the second welding head 12.

[0068] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A battery anti-welding and sticking device, characterized by, The battery anti-welding sticking device comprises: a tape feeding mechanism for feeding an anti-sticking tape, the anti-sticking tape comprising a working section; a movement module for switching the working section between an initial station and a welding station, wherein the working section is clamped between a first welding head of a welding device and a workpiece when the working section is in the welding station.

2. The battery anti-welding and sticking device according to claim 1, characterized in that, The anti-sticking tape has a thickness of 0.1-0.3mm; and / or the anti-sticking tape is a metal anti-sticking tape.

3. The battery anti-welding and sticking device according to claim 1, characterized in that, The battery anti-welding sticking device further comprises a tensioning mechanism for tensioning the working section; The tensioning mechanism comprises a first tensioning wheel and a second tensioning wheel, the first tensioning wheel being located on the inner side of the anti-sticking tape, the second tensioning wheel being located on the outer side of the anti-sticking tape, and the anti-sticking tape being pressed against the first tensioning wheel and the second tensioning wheel respectively.

4. The battery anti-welding and sticking device according to claim 3, characterized in that, The tape feeding mechanism comprises a first roller and a second roller, the anti-sticking tape being sleeved on the first roller and the second roller, the first roller and the second roller having the same rotation direction.

5. The battery anti-welding device according to claim 4, wherein The tape feeding mechanism comprises a first motor and a second motor, the output shaft of the first motor being in driving connection with the first roller, the output shaft of the second motor being in driving connection with the second roller; wherein when the first motor drives the first roller to unroll the anti-sticking tape, the second motor drives the second roller to wind up the anti-sticking tape; or when the second motor drives the second roller to unroll the anti-sticking tape, the first motor drives the first roller to wind up the anti-sticking tape, so as to recycle the anti-sticking tape.

6. The battery anti-welding and sticking device according to claim 5, characterized in that, The movement module comprises a driving mechanism in driving connection with the tape feeding mechanism and the tensioning mechanism, for driving the tape feeding mechanism and the tensioning mechanism to move in a first direction, so as to switch the working section between the initial station and the welding station; wherein the first direction is the movement direction of the first welding head.

7. The battery anti-welding device of claim 5, wherein, The battery anti-welding sticking device comprises a support frame comprising a first support structure and a second support structure arranged at intervals, the number of the tensioning mechanisms being two, one of the tensioning mechanisms being arranged on the first support structure and the other tensioning mechanism being arranged on the second support structure, the anti-sticking tape between the two tensioning mechanisms being the working section.

8. The battery anti-welding device of claim 7, wherein, The first support structure comprises a first frame and a first support bracket hinged to the first frame, and the second support structure comprises a second frame and a second support bracket hinged to the second frame; one of the tensioning mechanisms is arranged on the first support bracket and the other tensioning mechanism is arranged on the second support bracket; The movement module comprises a first tensioning mechanism and a second tensioning mechanism, the first tensioning mechanism being used for adjusting a first included angle between the first frame and the first support bracket, and the second tensioning mechanism being used for adjusting a second included angle between the second frame and the second support bracket, so as to switch the working section between the initial station and the welding station.

9. The battery anti-welding device of claim 8, wherein, The first tension mechanism comprises a first spring, a first connecting seat and a second connecting seat, one end of the first spring is connected with the first connecting seat, the other end of the first spring is connected with the second connecting seat, the end of the first connecting seat away from the first spring is connected with the first frame, and the end of the second connecting seat away from the first spring is connected with the first support; The second tension mechanism comprises a second spring, a third connecting seat and a fourth connecting seat, one end of the second spring is connected with the third connecting seat, the other end of the second spring is connected with the fourth connecting seat, the end of the third connecting seat away from the second spring is connected with the second frame, and the end of the fourth connecting seat away from the second spring is connected with the second support.

10. The battery anti-welding device of claim 4, wherein, The movement module is an elastic winding and unwinding mechanism, which is connected with the first roller shaft and is used for controlling release or recovery of the anti-sticking tape, so that the anti-sticking tape is switched between the initial station and the welding station. The tape feeding mechanism comprises a third motor, and an output shaft of the third motor is connected with the second roller shaft.

11. The battery anti-welding device of claim 10, wherein, The elastic winding and unwinding mechanism comprises a bracket, a clamping spring arranged on the bracket and a fixing rod, the clamping spring surrounds the first roller shaft, one end of the clamping spring is connected with the first roller shaft, and the other end of the clamping spring is fixedly arranged on the fixing rod. When the anti-sticking tape is switched from the initial station to the welding station under the driving of the first welding head, the clamping spring is in an elongated or compressed state. After the first welding head leaves, the anti-sticking tape returns to the initial station from the welding station under the driving of the clamping spring.

12. A welding apparatus characterized by, The welding device comprises a first welding head and the battery anti-welding and sticking device according to any one of claims 1-11, and is used for welding battery tabs.

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