CN217071291U - Tab co-welding device - Google Patents

Abstract

The application belongs to the technical field of welding devices, and provides a tab joint welding device which comprises a disc cutting assembly, a disc and a base, wherein the disc is rotatably connected to the base, the base is provided with a plurality of stations, and the stations are arranged on the periphery of the disc at intervals; the fixture assemblies are arranged on the disc and correspond to the stations; the plurality of clamp opening assemblies are arranged corresponding to part of the clamp assemblies; the tab searching assembly, the adjusting assembly and the welding assembly are sequentially arranged on the stations; and the positioning assembly and the pole lug searching assembly are respectively positioned at two sides of the clamp assembly corresponding to the pole lug searching assembly and are arranged on the base. The pole lug joint welding device can solve the technical problems that in the prior art, the linear assembly line working mode is low in space utilization rate and poor in flexibility, the positions of the pole lugs and a welding structure are difficult to coordinate, and the pole lugs are prone to joint welding failure.

Description

Tab co-welding device

Technical Field

The application belongs to the technical field of welding devices, and particularly relates to a pole lug co-welding device.

Background

The tab is a metal conductor led out from the positive and negative electrodes of the battery core, and in the prior art, the joint welding of the tab usually adopts a linear assembly line working mode. The detection and the elimination of bad cells are performed before the tab is welded, the positions of the tabs and the welding structure of the good cell are difficult to coordinate in the subsequent welding process, the tab is prone to failure in welding, and in addition, the linear assembly line working mode is low in space utilization rate and poor in flexibility.

For this reason, a technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a tab closes and welds device to solve among the prior art orthoscopic assembly line working method space utilization and hang down, the flexibility is relatively poor, and utmost point ear and welded structure's position is difficult to coordinate, leads to the utmost point ear to close the technical problem who welds the failure easily.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the pole lug joint welding device comprises a disc cutting assembly, a disc and a base, wherein the disc is rotationally connected to the base, the base is provided with a plurality of stations, and the stations are arranged on the periphery of the disc at intervals; the plurality of clamp assemblies are arranged on the disc and correspond to the plurality of stations, and the clamp assemblies are used for accommodating a tab to be welded and a cell to be welded; the clamp opening assemblies are arranged corresponding to part of the clamp assemblies and used for opening the clamp assemblies; the tab searching assembly, the adjusting assembly and the welding assembly are sequentially arranged at the stations, the tab searching assembly is used for adjusting the position of the cell to be welded, the adjusting assembly is used for adjusting the position and the shape of the tab to be welded, and the welding assembly is used for welding the tab to be welded; and the positioning assembly and the pole lug searching assembly are respectively positioned at two sides of the clamp assembly corresponding to the pole lug searching assembly and are arranged on the base.

Optionally, the tab co-welding device further comprises a detection assembly, the detection assembly is mounted on the base and arranged between the adjustment assembly and the welding assembly, and the detection assembly is used for detecting the position of the tab to be welded.

Optionally, the detection assembly is provided with a detection optical fiber sensor, and the detection optical fiber is arranged along the displacement path of the tab to be welded.

Optionally, the tab co-welding device further includes a signal receiving assembly, the signal receiving assembly is mounted on the base and disposed between the tab searching assembly and the adjusting assembly, and the signal receiving assembly is configured to receive a signal transmitted by the detecting assembly.

Optionally, the tab joint welding device further comprises a transfer assembly, and the transfer assembly is used for moving the welded battery cell out of the tab joint welding device; the plurality of stations further comprise a starting station, and the starting station is positioned between the tab searching assembly and the transferring assembly; the plurality of stations further comprise an idle station, and the idle station is located between the welding assembly and the transfer assembly.

Optionally, the positioning assembly is arranged in the middle of the disc, and the positioning assembly comprises a positioning part and a positioning cylinder, wherein the positioning part is connected with the positioning cylinder, and the positioning part is arranged at one end, close to the clamp assembly, of the positioning assembly.

Optionally, the tab searching assembly is provided with a tab searching cylinder, a stepping motor, a correction wheel and a tab searching correlation optical fiber, the stepping motor is in power connection with the correction wheel, and the stepping motor is used for driving the correction wheel to drive the battery core to rotate; the tab searching correlation optical fiber comprises a first correlation optical fiber and a second correlation optical fiber which are respectively aligned with the correction wheel and the to-be-welded battery cell; the pole ear searching cylinder is used for driving the correction wheel to generate displacement.

Optionally, the adjusting assembly comprises an adjusting cylinder and a shaping component, and the adjusting cylinder is connected with the shaping component and drives the shaping component to generate displacement.

Optionally, the fixture assembly comprises a fixture centering clamp, a tension spring and an opening clamp block, the tension spring is connected with the fixture centering clamp, the opening clamp block is displaced to drive the fixture centering clamp to open, and the fixture centering clamp pulls and fastens the fixture centering clamp through the tension of the tension spring to form the electric core to be welded with the paper floss; the clamp opening assembly is arranged on the starting station, the transferring assembly and the pole lug searching assembly, the clamp opening assembly comprises a clamp opening cylinder and a clamp opening ejector rod, the clamp opening cylinder is connected with the clamp opening ejector rod and drives the clamp opening ejector rod to generate displacement, and the clamp opening ejector rod is arranged corresponding to the clamp opening block.

Optionally, the welding assembly comprises a welding cylinder and a welding head, wherein the welding cylinder is connected with and drives the welding head to generate displacement.

The application provides a utmost point ear closes welds device's beneficial effect lies in: compared with the prior art, the tab joint welding device has the advantages that the disc cutting assembly is adopted, the plurality of stations are arranged on the periphery of the disc cutting assembly, and the cell to be welded and the tab to be welded are conveyed to each station for processing and welding through disc rotation, so that the space utilization rate is improved, and the flexibility is high; the position of the cell to be welded is adjusted by setting the tab searching component, the tab to be welded is sequentially centered by setting the adjusting component and the detecting component, and the position of the tab to be welded is detected so as to coordinate the positions of the tab and a welding structure, so that the success rate of welding is improved. The technical problems that the linear assembly line working mode in the prior art is low in space utilization rate and poor in flexibility, the positions of the lugs and a welding structure are difficult to coordinate, and the lug joint welding failure is easily caused are solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a tab co-welding device provided in the present application;

FIG. 2 is a schematic structural view of the disk partitioning assembly of FIG. 1;

FIG. 3 is a schematic structural view of the clamp assembly of FIG. 1;

FIG. 4 is a schematic view of the construction of the split clamp assembly of FIG. 1;

fig. 5 is a schematic structural view of the tab searching assembly in fig. 1;

FIG. 6 is a schematic structural view of the positioning assembly of FIG. 1;

FIG. 7 is a schematic structural view of the adjustment assembly of FIG. 1;

FIG. 8 is a schematic view of the welded assembly of FIG. 1;

FIG. 9 is a schematic diagram of the detection assembly of FIG. 1;

fig. 10 is a schematic structural diagram of the signal receiving module in fig. 1;

fig. 11 is a schematic structural view of the transfer assembly of fig. 1.

Wherein, in the figures, the respective reference numerals:

10. a disc dividing mechanism; 101. a disc; 102. a divider; 103. dividing the stepping motor;

104. a base; 105. dividing the electromagnetic valve; 20. a clamp mechanism; 201. a fixed seat; 202. a fixing plate; 203. a clamp righting clamp; 204. correcting the roller; 205. a linear bearing; 206. a guide shaft; 207. a baffle plate; 208. a tension spring fixing bolt; 209. a tension spring; 210. a linear guide rail; 211. opening a clamping block; 212. a stopper; 30. a positioning mechanism; 301. positioning the air cylinder; 302. positioning an inductive switch; 303. positioning a speed regulating valve; 304. a positioning member; 40. opening a clamp mechanism; 401. opening a clamp cylinder; 402. opening a clamp induction switch; 403. opening a fixture speed regulating valve; 404. opening a clamp ejector rod; 405. a floating joint; 406. a link; 407. opening a clamp sliding rail; 408. opening a clamp sliding block; 50. a pole lug searching mechanism; 501. a first tab searching cylinder; 502. a first tab searching firmware; 503. a first tab searching speed regulating valve; 504. a second pole ear searching speed regulating valve; 505. a pole ear searching cylinder seat; 506. a tab searching panel; 507. searching a tab linkage block; 508. a tab searching fixing plate; 509. a first tab searching slide rail; 510. a first tab searching sliding block; 511. a second tab searching slide rail; 512. a second tab searching sliding block; 513. a tab searching sliding plate; 514. a pole-seeking ear pressing wheel seat; 515. a tab searching fixing arm; 516. a tab searching stepping motor; 517. a pole ear searching protective cover; 518. a tab searching synchronous belt; 519. a tab searching and correcting wheel; 520. a second tab searching cylinder; 521. a second tab searching fastener; 522. a third pole ear searching speed regulating valve; 523. a fourth pole ear searching speed regulating valve; 524. seeking a tab floating joint; 525. seeking a tab sliding seat; 526. a third pole ear searching sliding block; 527. a third tab searching slide rail; 528. a polar seeking ear photoelectric seat; 5291. a first tab finding correlation optical fiber; 5292. a second tab searching correlation optical fiber; 60. an adjustment mechanism; 601. a first adjustment cylinder; 602. a first regulating speed valve; 603. a first adjustment fastener; 604. a second regulating speed valve; 605. a first adjustment cylinder block; 606. a first adjusting floating joint; 607. a first adjustment pushing block; 608. adjusting a limiting block; 609. a first adjustment track slider; 610. a first adjustment slide; 611. a second adjustment cylinder block; 612. a second adjustment cylinder; 613. a third regulating speed valve; 614. a fourth regulating speed valve; 615. adjusting the fixed seat; 616. adjusting a molding block; 617. adjusting the centralizing clamp; 618. a third adjustment cylinder; 619. a fifth regulating speed valve; 620. a second adjustment fastener; 621. adjusting a sixth speed regulating valve; 622. a second adjusting floating joint; 623. a second pushing block; 624. a second adjustment slide; 625. a second adjustment track slider; 626. adjusting the linear guide rail; 627. adjusting the supporting plate; 70. a detection mechanism; 701. a detection optical fiber sensor; 80. a signal receiving mechanism; 801. a track sheet; 802. a card holder; 803. an amplifier; 90. a welding mechanism; 901. a first weld cylinder; 902. a first welding speed regulating valve; 903. a first welding cylinder connecting seat; 904. a lower weld head floor; 905. a basement membrane fixing seat; 906. a lower welding head; 907. welding a limit stop block; 908. welding a limiting seat; 909. a first welding slide block set; 910. a first welded rail; 911. a second welded slide rail; 912. a welding head is arranged; 913. an upper welding head bottom plate; 914. a second welding slide block set; 915. welding a connecting seat; 916. a second welding speed regulating valve; 917. a second weld cylinder; 918. welding an upper bottom plate; 919. welding a support plate; 920. welding the reinforcing plate; 921. welding an adjusting block; 922. welding a lower bottom plate; 100. a transfer mechanism; 10001. a first transfer speed regulating valve; 10002. a first transfer induction switch; 10003. a first transfer cylinder; 10004. a transfer mounting base; 10005. a second transfer induction switch; 10006. a second transfer speed regulating valve; 10007. a first transfer connecting block; 10008. a first transfer slide rail; 10009. a first transfer slider; 10010. a transfer limiting block; 10011. transferring the photoelectric seat; 10012. a third transfer speed regulating valve; 10013. a transfer cylinder block; 10014. a second transfer cylinder; 10015. a fourth transfer speed regulating valve; 10016. a second transfer connecting seat; 10017. the second transfer block set 10017; 10018. a second transfer slide rail; 10019. a second transfer slider; 10020. a first transfer holder; 10021. a third transfer cylinder; 10022. transferring the optical fiber; 10023. transferring the clamping jaw group; 10024. a fifth transfer speed regulating valve; 10025. a sixth transfer speed regulating valve; 10026. the second transfer fixing seat.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

In the existing tab joint welding technology, a linear assembly line working mode is usually adopted, but the linear assembly line working mode has low space utilization rate and poor flexibility; and the positions of the lugs and the welding structure are difficult to coordinate, so that the joint welding failure of the lugs is easily caused. In the technical scheme provided by the application, the disc partitioning assembly is arranged, and a rotating processing mode is adopted, so that the space utilization rate is improved, and the flexibility is improved; and the position of the electric core to be welded is adjusted by setting the tab searching component, the tab to be welded is sequentially righted and detected by setting the adjusting component and the detecting component, and the positions of the tab to be welded and a welding structure are coordinated so as to solve the technical problems in the prior art.

Referring to the attached drawings of the specification, a tab welding device provided in an embodiment of the present application is described, which is used for welding a tab to be welded, and as shown in fig. 1, the tab welding device includes:

the disc dividing mechanism 10 comprises a disc 101 and a base 104, wherein the disc 101 is rotatably connected to the base 104, the disc 101 can rotate relative to the base, the base 104 is provided with a plurality of stations, and the stations are arranged on the periphery of the disc 101 at intervals. The disc 101 can rotate to transfer the cells to be welded and the tabs on the disc 101 to various stations for processing, so that the space utilization rate and flexibility are improved.

The fixture mechanism 20, a plurality of fixture mechanisms 20 are installed on the disc 101 and are arranged corresponding to the plurality of stations, and the fixture mechanism 20 is used for accommodating the to-be-welded tab and the to-be-welded battery cell. The fixture mechanism 20 is arranged on the disc 101 to fix the to-be-welded battery cell and the tab, and ensures that the to-be-welded battery cell and the tab can be located at positions corresponding to the stations when the disc 101 drives the fixture mechanism 20 and the to-be-welded battery cell and the tab rotate, so that the to-be-welded battery cell and the tab can be processed and processed by other mechanisms conveniently.

And a plurality of clamp opening mechanisms 40 which are arranged corresponding to part of the clamp mechanisms 20 and are used for opening the clamp mechanisms 20. The clamp opening mechanism 40 opens the clamp mechanism 20 to facilitate placement, removal or adjustment of the cells to be welded and the tabs to be welded.

The tab searching mechanism 50, the adjusting mechanism 60 and the welding mechanism 90 are sequentially arranged at a plurality of stations, the tab searching mechanism 50 is used for adjusting the position of the to-be-welded battery cell, the adjusting mechanism 60 is used for adjusting the position and the shape of the to-be-welded tab, and the welding mechanism 90 is used for welding the to-be-welded battery cell. Namely, the electrode tab searching station, the adjusting station and the welding station are respectively arranged in sequence. The tab searching mechanism 50 is used for adjusting the position of the electric core to be welded so that the tab to be welded is positioned on the end surface of the transverse circle of the side surface of the electric core; the adjusting mechanism 60 further adjusts the position of the tab and centralizes the tab to be welded, and coordinates the positions of the cell to be welded and the welding structure, so as to improve the success rate of tab welding; the welding mechanism 90 then welds the tabs to be welded.

The positioning mechanism 30, the positioning mechanism 30 and the tab searching mechanism 50 are respectively located at two sides of the clamp mechanism 20 corresponding to the tab searching mechanism 50 and are all mounted on the base 104. The positioning mechanism 30 and the tab searching mechanism 50 cooperate to adjust the position of the to-be-welded battery cell.

According to the tab joint welding device, the disc cutting mechanism 10 is adopted, the stations are arranged on the periphery of the disc 101 of the disc cutting mechanism 10, and the disc 101 rotates to convey the cell to be welded and the tab to be welded to each station for processing and welding, so that the space utilization rate is improved, and the flexibility is high; the position of the cell to be welded is adjusted by arranging the tab searching mechanism 50, the tab to be welded is sequentially centered by arranging the adjusting mechanism 60 and the detecting mechanism 70, and the position of the tab to be welded is detected so as to coordinate the positions of the tab and a welding structure, so that the welding success rate is improved. The technical problems that the linear assembly line working mode in the prior art is low in space utilization rate and poor in flexibility, the positions of the lugs and a welding structure are difficult to coordinate, and the lug joint welding failure is easily caused are solved.

The structure of the disc dividing mechanism 10, the clamping mechanism 20, the clamping mechanism 40, the tab searching mechanism 50, the adjusting mechanism 60, the welding mechanism 90, and the positioning mechanism 30 in the present embodiment will be described in detail.

As shown in fig. 2, the disk dividing mechanism 10 further includes a divider 102 and a dividing stepping motor 103. The divider 102 is arranged between the disc 101 and the base 104 and is used for high-speed intermittent division when the disc 101 rotates; the dividing stepping motor 103 is disposed on a side of the base 104 away from the disk 101, is drivingly connected to the disk 101, and provides power for rotation of the disk 101. The disk dividing mechanism 10 further includes a dividing solenoid valve 105, a dividing speed valve 106, both of which are mounted to the base 104 and are used to control and regulate components in the welding mechanism 90.

As shown in fig. 1 and fig. 3, the fixture mechanism 20 includes a plurality of fixture centering clamps 203, a tension spring 209, and an opening clamp block 211, the tension spring 209 is connected to the plurality of fixture centering clamps 203, the opening clamp block 211 is displaced to drive the plurality of fixture centering clamps 203 to open, and the plurality of fixture centering clamps 203 fasten the plurality of fixture centering clamps 203 by pulling force of the tension spring 209 to accommodate the to-be-welded electrical core.

Specifically, the fixture mechanism 20 further includes a fixing base 201, two fixing plates 202, a blocking plate 207, a linear bearing 205, a guide shaft 206, a tension spring fixing bolt 208, a linear guide rail 210, a stopper 212, and a correcting roller 204; the stop block 212 is connected with the open clamping block 211, oblong holes are formed in two sides of the open clamping block 211, the open clamping block 211 is arranged on the linear guide rail 210, the two oblong holes are not parallel to each other and are in a splayed shape, and round wheels are respectively arranged in the two oblong holes and are respectively connected with the two fixing plates 202; the linear bearing 205 is assembled with the guide shaft 206 in a matching way, two ends of the tension spring 209 are connected with the tension spring fixing bolt 208 on the fixing plate 202, the two fixing plates 202 are connected through the guide shaft 206 and the tension spring 209, the two fixing plates 202 can be far away from or close to each other through the guide shaft 206 and the tension spring 209, the two fixing plates 202 are respectively provided with the clamp centering clamp 203, and the blocking piece 207 is arranged between the two fixing plates 202 and the clamp centering clamp 203 and is positioned at one end far away from the center of the disc 101. The fixing plate 202 is mounted on the base 104 through the fixing base 201, and the calibration roller 204 is located in a space formed by the fixing base 201 and the fixing plate 202. The stopper 212 moves along with the opening clamping block 211 through a linear sliding rail under the pushing and abutting action, the round wheel moves in the long circular hole of the opening clamping block 211, the round wheel drives the fixing plate 202 to move along the guide shaft 206 to be away from each other under the limiting action of the splayed long circular hole, the tension spring 209 stretches to store potential energy, and the clamp righting clamp 203 is opened to place an electric core. After the placement is finished, the tension spring 209 releases potential energy, the fixing plate 202 moves oppositely along the guide shaft 206, and the clamp righting clamp 203 clamps the battery cell.

The clamp opening mechanism 40 is respectively arranged at the initial station, the tab searching mechanism 50 and the transfer mechanism 100. As shown in fig. 4, the clamp opening mechanism 40 includes a clamp opening cylinder 401 and a clamp opening push rod 404, the clamp opening cylinder 401 is connected to the clamp opening push rod 404 and drives the clamp opening push rod 404 to displace, and the clamp opening push rod 404 is arranged corresponding to the clamp opening block 211. The clamp opening push rod 404 is abutted and displaced together with the clamp opening block 211, and the clamp opening block 211 can drive the plurality of clamp centering clamps 203 to be opened by displacement of the clamp opening block 211 so as to put the to-be-welded battery cell into the clamp.

Specifically, the clamp opening mechanism 40 further includes a floating joint 405, a link joint 406, a clamp opening slide rail 407, a clamp opening inductive switch 402, and a clamp opening speed regulating valve 403; the clamp opening cylinder 401 is provided with a clamp opening speed regulating valve 403, one end of the clamp opening speed regulating valve is connected with a floating joint 405, the floating joint 405 is connected with the vertical part of the link joint 406, one side of a clamp opening sliding block 408 is provided with the horizontal part of the link joint 406, the other side of the clamp opening sliding block is provided with a clamp opening push rod 404, a clamp opening sliding rail 407 is arranged below the clamp opening sliding block 408, and the clamp opening sliding block 408 can move along the clamp opening sliding rail 407; the clamp opening ram 404 may push against the stop 212 in the clamp mechanism 20 for moving the stop 212 to open the clamp mechanism 40. The clamp opening sensing switch 402 is used for detecting the positions of the clamp opening cylinder 401 and the floating joint 405 to judge whether the clamp opening cylinder 401 is actuated or not so as to control the floating joint 405 to extend or return.

As shown in fig. 5, the tab searching mechanism 50 includes a plurality of tab searching cylinders, a tab searching stepping motor 516, a tab searching correction wheel 519, a first tab searching correlation optical fiber 5291 and a second tab searching correlation optical fiber 5292, and the tab searching cylinders drive the tab searching correction wheel 519 to move to the to-be-welded electric core; the tab searching stepping motor 516 is in power connection with a tab searching correction wheel 519, the tab searching stepping motor 516 drives the tab searching correction wheel 519 to rotate, and then the cell to be welded is driven to rotate until the tab to be welded is located on the end face of the cross circle of the side face of the cell; the first tab searching correlation optical fiber 5291 and the second tab searching correlation optical fiber 5292 are respectively aligned with the tab searching correction wheel 519 and the to-be-welded cell, and are used for detecting whether the to-be-welded cell is in an ideal position or not and detecting whether the to-be-welded cell returns or not after the tab searching correction wheel 519 adjusts the cell position. As another embodiment, the tab searching mechanism 50 may further include a plurality of tab searching speed adjusting valves for further accurately regulating and controlling the tab searching correction wheel 519 to reach the position of the to-be-welded electrical core.

Specifically, the tab searching cylinder comprises a first tab searching cylinder 501 and a second tab searching cylinder 520; the tab searching speed regulating valve comprises a first tab searching speed regulating valve 503, a second tab searching speed regulating valve 504, a third tab searching speed regulating valve 522 and a fourth tab searching speed regulating valve 523.

The tab searching mechanism 50 further includes a first tab searching fixing member 502, a tab searching cylinder base 505, a tab searching panel 506, a tab searching link block 507, a tab searching fixing plate 508, a first tab searching slide rail 509, a first tab searching slide block 510, a second tab searching slide rail 511, a second tab searching slide block 512, a tab searching slide plate 513, a tab searching press wheel base 514, a tab searching fixing arm 515, a tab searching protective cover 517, a tab searching synchronous belt 518, a second tab searching fastener 521, a tab searching floating joint 524, a tab searching slide base 525, a third tab searching slide block 526, a third tab searching slide rail 527, and a tab searching photoelectric base 528.

A tab searching fixing plate 508 is installed on the base 104, one side of the tab searching fixing plate 508 is connected with a first tab searching cylinder 501 through a tab searching cylinder base 505, a first tab searching speed regulating valve 503 and a second tab searching speed regulating valve 504 are respectively installed at two ends of the first tab searching cylinder 501, a fixing piece is installed in the middle of the first tab searching cylinder 501, one end of the first tab searching cylinder 501 is connected with a tab searching panel 506, the tab searching panel 506 is connected with a tab searching link 409, the tab searching link 409 passes through the tab searching fixing plate 508 through a long hole to be connected with a tab searching sliding plate 513, a first tab searching slide block 510, a first tab searching slide rail 509, a second tab searching slide block 512 and a second tab searching slide rail 511 are respectively arranged below two sides of the tab searching sliding plate 513, the tab searching sliding plate is connected with a press wheel plate, a tab searching stepping motor 516 is arranged above the press wheel plate, one side of two sides of a tab searching synchronous belt 518 is connected with the tab searching stepping motor 516, the other side is connected with a pole ear searching correction wheel 519, and one side of the pole ear searching pressing wheel plate is connected with the pole ear searching correction wheel 519 through a pole ear searching fixing arm 515. A third tab searching slide rail 527 is arranged on the tab searching fixing plate 508 below the tab searching slide plate 513, a third tab searching slide block 526 is arranged above the third tab searching slide rail 527, a tab searching slide seat 525 is connected above the third tab searching slide block 526, one side of the tab searching slide seat 525 is connected with a tab searching floating joint 524, the tab searching floating joint 524 is connected with a second tab searching air cylinder 520, a third tab searching 522 and a fourth tab searching speed regulating valve 523 are arranged at two ends of the second tab searching air cylinder 520, a tab searching photoelectric seat 528 is arranged at the upper part of the tab searching slide seat 525, and a first tab searching correlation optical fiber 5291 and a second tab searching correlation optical fiber 5292 are arranged at the upper end and the lower end of the tab searching photoelectric seat 528.

When the clamp mechanism 20 moves to the tab searching station, the clamp opening mechanism 40 acts on the clamp opening mechanism 20, the positioning cylinder mechanism 30 drives the positioning block 306 to extend to abut against one side of the to-be-welded battery cell, and the other side of the to-be-welded battery cell is in contact with the blocking piece 207; a first tab searching cylinder 501 in the rear tab searching mechanism 50 drives, a tab searching sliding plate 513 moves along a first tab searching sliding rail 509 and a second tab searching sliding rail 511, a tab searching correction wheel 519 descends, a tab searching stepping motor 516 drives a synchronous tab searching belt 518 to drive the tab searching correction wheel 519 to rotate, and then the to-be-welded cell is driven to rotate until two tabs to be welded are located at the highest point of the cross section circle of the side face of the to-be-welded cell; the second tab searching cylinder 520 drives the tab searching sliding plate 513 to move along the third tab searching sliding rail 527, the second tab searching correlation optical fiber 5292 is used for detecting whether the cell to be welded is in an ideal position, and the first tab searching correlation optical fiber 5291 is used for detecting whether the tab searching correction wheel 519 ascends after the position of the cell to be welded is adjusted.

The positioning mechanism 30 is provided in the middle of the disc 101. As shown in fig. 6, the positioning mechanism 30 includes a positioning member 304 and a positioning cylinder 301, the positioning member 304 is connected to the positioning cylinder 301, and the positioning member 304 is disposed at one end of the positioning mechanism 30 close to the clamping mechanism 20. As shown in fig. 1 again, when the to-be-welded battery cell is transferred to the tab searching station, the positioning cylinder 301 drives the positioning component 304 to extend out, the positioning component 304 abuts against the battery cell, and cooperates with the blocking piece 207 of the tab searching mechanism 50 to limit and fix the position of the battery cell, so as to prevent the battery cell from coming off, and after the tab searching mechanism 50 adjusts the position of the to-be-welded battery cell, the positioning cylinder 301 drives the positioning component 304 to return. As another embodiment, the positioning mechanism 30 may further include a positioning speed regulating valve 303 and a positioning inductive switch 302 for further precisely controlling the positioning component 304, and the positioning inductive switch 302 is configured to detect whether the positioning component 304 is returned to its original position, so as to control the positioning component 304 to retract to its original position.

As shown in fig. 7, the adjusting mechanism 60 includes an adjusting cylinder and a shaping component, the adjusting cylinder is connected with the shaping component and drives the shaping component to displace so as to reach above the tab to be welded, and the position and shape of the tab to be welded are adjusted. Specifically, as another embodiment, the adjusting mechanism 60 further includes a plurality of adjusting speed valves and adjusting track sliders, and the adjusting components include a shaping block 616 and an adjusting centralizing clamp 617; the adjusting cylinder drives the adjusting and setting block 616 and the adjusting and centering clamp 617, the adjusting and setting block 616 and the adjusting and centering clamp 617 enclose a containing space, during adjustment, a to-be-welded tab is placed in the containing space, the adjusting track slider is close to the to-be-welded tab and is adjusted to be above the to-be-welded tab, and then the position and the shape of the to-be-welded tab are adjusted.

Specifically, the tuning cylinders include a first tuning cylinder 601, a second tuning cylinder 612, and a third tuning cylinder 618; the adjusting speed regulating valves comprise a first adjusting speed regulating valve 602, a second adjusting speed regulating valve 604, a third adjusting speed regulating valve 613, a fourth adjusting speed regulating valve 614, a fifth adjusting speed regulating valve 619 and an adjusting sixth speed regulating valve 621; the track sliders include a first adjustment track slider 609 and a second adjustment track slider 625.

The adjusting mechanism 60 further includes a first adjusting fastener 603, a first adjusting cylinder block 605, a first adjusting floating joint 606, a first adjusting pushing block 607, an adjusting limiting block 608, a first adjusting slider 610, a second adjusting cylinder block 611, an adjusting fixing seat 615, a second adjusting fastener 620, a second adjusting floating joint 622, a second adjusting pushing block 623, a second adjusting slider 624, an adjusting linear guide 626, and an adjusting support plate 627.

An adjusting support plate 627 in the adjusting mechanism 60 is fixed on a bottom plate 104 of the disc dividing mechanism 10, an adjusting linear guide 626 is arranged on one surface of the adjusting support plate 627 close to the clamp disc 101, and a lower first adjusting track slide 609 and an upper second adjusting track slide 625 are arranged at two ends of the adjusting linear guide 626. A first adjusting track sliding block 609 is arranged below the first adjusting track sliding block 610, a vertical part of a first adjusting cylinder seat 605 is connected below one surface of the first adjusting sliding block 610, an adjusting shaping block 616 is arranged above the same surface of the first adjusting sliding block 610, a second adjusting cylinder 612 is arranged on the horizontal part of the first adjusting cylinder seat 605, a third adjusting speed regulating valve 613 and a fourth adjusting speed regulating valve 614 are arranged beside the second adjusting cylinder 612, two adjusting fixing seats 615 are arranged in a mounting groove of the second adjusting cylinder 612, an adjusting centering clamp 617 is arranged at one end of each adjusting fixing seat 615, the side surface of the first adjusting sliding block 610 is connected with a first pushing block 607, an adjusting limiting block 608 is arranged on an adjusting supporting plate 627 above the first pushing block 607, the first pushing block 607 is connected with an adjusting floating joint 622 and further connected with the first adjusting cylinder 601, the first adjusting cylinder 601 is fixed on the adjusting supporting plate through the first adjusting cylinder seat 605, the two sides of the first adjusting cylinder 601 are provided with a first adjusting cylinder 601 and a second adjusting cylinder 612, and the middle is provided with a first adjusting fastener 603. A second adjusting sliding block 624 is arranged on the second adjusting track sliding block 625 above, one side of the second adjusting sliding block 624, which is adjusted by the fixed seat 615, is provided with an adjusting and shaping block 616, the same side is connected with a second pushing block 623, the second pushing block 623 is connected with a second adjusting floating joint 622 and further connected with a third adjusting air cylinder 618, the two sides of the third adjusting air cylinder 618 are provided with a fifth adjusting speed regulating valve 619 and an adjusting sixth speed regulating valve 621, and the middle part is provided with a second adjusting fastener 620.

When the clamp mechanism 20 moves to the adjusting station, the first adjusting cylinder 601 drives the first adjusting slider 610 to move upward to a preset position along the linear slide rail, namely below the tab to be welded; the second adjusting cylinder 612 drives the adjusting fixing seat 615 and the adjusting righting clamp 617, and the two tabs to be welded are located in a space formed by the adjusting shaping block 616 and the adjusting righting clamp 617; the third adjusting cylinder 618 drives the second adjusting rail sliding block 625 to move downwards to a preset position, namely above the pole lug, and the position and the shape of the pole lug to be welded are adjusted; and then the shaping block 616 is adjusted to return upwards or downwards.

As shown in fig. 8, the welding mechanism 90 includes a plurality of welding cylinders and a plurality of welding heads, the welding cylinders drive the plurality of welding heads to move to the positions of the tabs to be welded, and weld two tabs to be welded to one position, and then the plurality of welding heads are reset. As another embodiment, the welding mechanism 90 further includes a plurality of welding speed regulating valves for further precisely regulating and controlling the position of the welding head to the position of the tab to be welded.

Specifically, the welding cylinders include a first welding cylinder 901, a second welding cylinder 917; the welding speed regulating valve comprises a first welding speed regulating valve 902 and a second welding speed regulating valve 916; the welding heads include an upper welding head 912, a lower welding head 906.

The welding mechanism 90 further includes a first welding cylinder connecting seat 903, a lower welding head bottom plate 904, a bottom film fixing seat 905, a welding limit stopper 907, a welding limit seat 908, a first welding slider group 909, a first welding slide rail 910, a second welding slide rail 911, an upper welding head bottom plate 913, a second welding slider group 914, a second welding cylinder 917, a welding connecting seat 915, an upper welding bottom plate 918, a welding supporting plate 919, a welding reinforcing plate 920, a welding adjusting block 921, a lower welding bottom plate 922, a first welding cylinder 901 and a second welding cylinder 917, and the first welding slider group 909 and the second welding slider group 914 are respectively driven to respectively move upwards and downwards along the first welding slide rail 910 and the second welding slide rail 911, and the upper welding head 912 and the lower welding head 906 close the welding pole pieces.

The lower part of a welding lower bottom plate 922 is arranged on a base plate of the disc dividing mechanism 10, a welding adjusting block 921 is matched with a bolt to adjust the position of a welding mechanism 90, a first welding cylinder 901 is arranged at one end above the welding lower bottom plate 922, a welding supporting plate 919 is vertically arranged with the welding lower bottom plate 922, welding reinforcing plates 920 are respectively arranged at two sides of one surface of the welding supporting plate 919, a first welding speed regulating valve 902 is arranged at the side surface of the first welding cylinder 901, and a first welding cylinder connecting seat 903, a lower welding head bottom plate 904, a welding base membrane fixing seat 905 and a lower welding head 906 are sequentially connected above the first welding cylinder 901; the opposite other side of the welding support plate 919, on which the welding reinforcing plate 920 is mounted, is provided with a first welding slide rail 910 and a second welding slide rail 911, the other side of the first welding slide rail 910 and the second welding slide rail 911 is correspondingly provided with a first welding slide block group 909 and a second welding slide block group 914, the first welding slide block group 909 and the second welding slide block group 914 are respectively and correspondingly provided with a lower welding bottom plate and an upper welding bottom plate, a welding limit block 907 is mounted below the lower welding bottom plate, and a welding limit seat 908 is arranged on the welding limit block 907; one side of the upper welding bottom plate is provided with an upper welding head 912, the upper side of the upper welding bottom plate is connected with a second welding cylinder 917 and a welding connecting seat 915, the second welding cylinder 917 is further connected with the second welding cylinder 917, the second welding cylinder 917 is provided with a second welding speed regulating valve group 916, and the second welding cylinder 917 is arranged on the upper welding bottom plate 918.

When the fixture mechanism 20 moves to the welding station, the first welding cylinder 901 is driven, the first welding slide block group 909 moves upwards along the first welding slide rail 910 and the second welding slide rail 911, and the lower welding head 906 moves to below the tab to be welded; the second welding cylinder 917 drives the second welding slide group 914 to move along the first welding slide 910, the first welding slide 910 moves downwards, and the upper welding head 912 moves along with the first welding slide and the lower welding head 906 to weld two tabs to be welded together; then up welding head 912; the lower weld head 906 descends.

Further, the tab co-welding device further includes a detection mechanism 70 and a signal receiving mechanism 80.

And the detection mechanism 70 is installed on the base 104 and arranged between the adjusting station and the welding station, and the detection mechanism 70 is used for detecting whether the to-be-welded tab is located at an ideal position. After the detection mechanism 70 is located at the adjusting station, the tab to be welded is further detected after being straightened, and the tab to be welded is welded at the welding station after the tab to be welded is confirmed to be at the correct position, so that the success rate of welding the tab to be welded is further improved.

As shown in fig. 9, the detecting mechanism 70 is provided with a detecting optical fiber sensor 701, the optical fiber sensor 701 is arranged along the displacement path of the to-be-welded tab to detect whether the to-be-welded tab is in the correct position before welding, and when the detection result is normal, the next station is entered for welding.

The signal receiving mechanism 80 is installed on the base 104 and disposed between the positioning station and the adjusting station, and receives signals transmitted by the tab searching mechanism 50 and the detecting mechanism 70. The signal receiving mechanism 80 receives signals transmitted by the tab searching mechanism 50 and the detecting mechanism 70 to assist in adjusting the positions of the battery cells and the positions and states of the tabs.

As shown in fig. 10, the signal receiving unit 80 includes a track piece 801, a card socket 802, and an amplifier 803, and the track piece 801 is fixed to the amplifier 803 via the card socket 802; the optical fiber positioning device is mounted on the base 104 and disposed between the positioning station and the adjusting station, receives signals, such as optical fiber signals, transmitted by the tab searching mechanism 50 and the detecting mechanism 70, provides a judgment basis for adjustment, and immediately transfers to the next station after adjustment is completed.

As shown in fig. 1, the tab welding device further includes a transfer mechanism 100 disposed at a transfer station, the base 104 is further provided with an initial station, the initial station is located between the tab searching station and the transfer station and is used for initially placing a tab to be welded and an electrical core to be welded to the tab welding device, and the initial station is also correspondingly provided with a fixture mechanism 20 for accommodating the tab to be welded and the electrical core to be welded. The base 104 is further provided with an idle station, the idle station is positioned between the welding station and the transferring station, a buffering effect is achieved, and the welded battery core and the welded electrode lug can be stood and cooled for a period of time at the idle station and then transferred to the transferring station.

As shown in fig. 11, the transfer mechanism 100 includes a plurality of transfer cylinders and a transfer clamping jaw set 10023, a transfer cylinder, and a transfer speed regulating valve, the transfer cylinders drive the clamping jaws to move to the position of the welded electric core, and the speed regulating valve is transferred, the clamp centering clamp 203 of the clamp mechanism 20 is opened, and the clamping jaw set 10023 picks the welded electric core and transfers the electric core out of the tab welding device.

Specifically, the transfer cylinders include a first transfer cylinder 10003, a second transfer cylinder 10014, and a third transfer cylinder 10021; the transfer speed control valve includes a first transfer speed control valve 10001, a second transfer speed control valve 10006, a third transfer speed control valve 10012, a fourth transfer speed control valve 10015, a fifth transfer speed control valve 10024, and a sixth transfer speed control valve 10025. Move about from top to bottom through first cylinder 10003, the drive of second transfer cylinder, the third is transferred cylinder 10021 drive clamping jaw and is snatched electric core for it shifts out utmost point ear and closes the welding set to snatch electric core, transfers cylinder block 10013 and second and transfers cylinder block 10014 and be used for the fixed cylinder of transferring.

The transfer mechanism 100 further includes a first transfer sensing switch 10002, a transfer mounting base 10004, a second transfer sensing switch 10005, a first transfer connecting block 10007, a first transfer slide 10008, a first transfer slider 10009, a transfer stopper 10010, a transfer photoelectric base 10011, a cylinder base 10013, two upper and lower parts, a second transfer connecting base 10016, a second transfer stopper block 10017, a second transfer slide 10018, a second transfer slider 10019, a first transfer fixing base 10020, a transfer optical fiber 10022, a transfer gripper set 10023, and a second transfer fixing base 10026.

The first transfer fixing seat 10020 is installed in the bottom plate in the transfer mechanism 100, the upper end of the first transfer fixing seat 10020 is provided with a transfer mounting seat 10004, one side edge of the transfer mounting seat 10004 is provided with a transfer limiting block 10010, a fixing piece is arranged at the middle corresponding position, a first transfer sliding rail 10008 is installed on the first transfer fixing seat 100020, a first transfer sliding block 10009 is arranged on the first transfer sliding rail 10008, the other side of the transfer mounting seat 10004 is provided with a first transfer cylinder 10003, the two ends of the first transfer speed regulating valve 10001 and the second transfer speed regulating valve 10006 are provided with induction switches, namely a first transfer induction switch 10002 and a second transfer induction switch 10005. Connect the stationary blade one side on the first slider 10009 of transferring, the second is installed to the stationary blade another side and is transferred slide rail 10018, the second is transferred and is installed the second on slide rail 10018 and transfer slider 10019, both ends are equipped with the second and transfer spacing seat group 10017, the second is transferred slider 10019 and is connected the first one end of transferring fixing base 10020, the first fixing base 10020 other end of transferring is connected the third and is transferred cylinder 10021, the third is transferred cylinder 10021 upper portion and is equipped with correlation optic fibre, whether move clamping jaw group 10023 action for the monitoring, the third is transferred cylinder 10021 lower part and is equipped with and transfers clamping jaw group 10023, be used for pressing from both sides and get electric core, the third is transferred cylinder 10021 one side and is equipped with the fifth and transfers speed governing valve 10024, the speed governing valve 10025 is transferred to the sixth. First transfer fixing base 10020 transfers connecting seat 10016 with the second in the horizontal back and links to each other, and the second transfers connecting seat 10016's the other end and is connected with hollow block, and the cylinder 10014 passes hollow block is transferred to the second, and hollow block can be followed the second and transferred cylinder 10014 and moved, and the second is transferred the cylinder 10014 both ends and is equipped with the third and transfers speed governing valve 10012, the fourth and transfer speed governing valve 10015. The second transfer cylinder 10014 is installed at the fixing piece through the first transfer holders 10020 at both sides.

When the tab clamp group moves to the transfer station, the clamp opening mechanism 40 acts on the clamp opening mechanism 20, the first transfer cylinder 10003 is driven, and the first transfer slider 10009 moves to the right along the first transfer slide rail 10008; the second transfer cylinder 10014 drives the second transfer slider 10019 to move down along the second transfer slide 10018, and simultaneously the hollow groove moves down along the second transfer cylinder 10014; the third transfer cylinder 10021 drives the transfer gripper set 10023 to grip the welded battery cell; the second transfer cylinder 10014 drives the second transfer slider 10019 to move upward along the second transfer slide rail 10018; the first transfer cylinder 10003 is driven, and the first transfer slider 10009 moves left along the first transfer slide 10008 to transfer the welded electrical core out of the tab welding device.

As shown in fig. 1, the process of the tab co-welding device includes:

initial station processing: the clamp opening mechanism 40 moves the clamp opening push rod 404 to push the stop block 212 to open the clamp mechanism 40, the battery cell and the tab to be welded are placed into the clamp mechanism 20, the clamp opening mechanism 40 returns, and the clamp mechanism 20 clamps the battery cell and the tab to be welded and transfers the battery cell and the tab to the tab searching station.

And (3) pole lug searching station treatment: the clamp opening mechanism 40 opens the clamp mechanism 40, the blocking piece 207 of the tab searching mechanism 50 cooperates with the positioning component 304 of the positioning mechanism 30 to fix the to-be-welded battery cell, the tab searching correction wheel 519 of the tab searching mechanism 50 rotates and drives the to-be-welded battery cell to move to the transverse circular end face of the side face of the to-be-welded battery cell, when the tab searching optical fiber 505 detects that the to-be-welded battery cell moves to a proper position, the tab searching clamp mechanism 40 returns, and the clamp mechanism 20 clamps the to-be-welded battery cell and the tab and transfers the to-be-welded battery cell and the tab to the adjusting station.

And (3) station adjustment treatment: the adjusting mechanism 60 adjusts the position and shape of the tab to be welded by adjusting the centering clamp 617 and the shaping block 603, and then transfers to the welding station, and the detection optical fiber of the detecting mechanism 70 detects the position of the tab to be welded during the transfer process.

And (3) welding station treatment: and a plurality of welding heads of the welding tool are matched with each other to weld the two tabs to be welded to one position in a combined mode, and then the tabs are transferred to an idle station.

Idle station treatment: the welded battery core is placed still at an idle station and then transferred to a transfer station.

Transferring station treatment: the clamp opening mechanism 40 moves the clamp opening push rod 404 to push the stop block 212 to open the clamp mechanism 40, the battery cell after welding is transferred and grabbed, the tab welding device is moved out, the clamp opening mechanism 40 returns, and the clamp centering clamp 203 of the clamp mechanism 20 resets.

Compared with the prior art, the tab joint welding device has the advantages that the disc partitioning mechanism 10 is adopted, the stations are arranged on the periphery of the disc 101 of the disc partitioning mechanism 10, the disc 101 rotates to convey the cell to be welded and the tab to be welded to each station for processing and welding, so that the space utilization rate is improved, and the flexibility is high; the position of the cell to be welded is adjusted by arranging the tab searching mechanism 50, the tab to be welded is sequentially centered by arranging the adjusting mechanism 60 and the detecting mechanism 70, and the position of the tab to be welded is detected so as to coordinate the positions of the tab and a welding structure, so that the welding success rate is improved. The technical problems that in the prior art, the space utilization rate of a linear assembly line working mode is low, the flexibility is poor, the positions of the lugs and a welding structure are difficult to coordinate, and the lug joint welding failure is easily caused are solved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a utmost point ear closes welds device for handle and treat that welding electric core treats welding utmost point ear with close welding, its characterized in that: comprises that

The disc cutting assembly comprises a disc and a base, the disc is rotatably connected to the base, the base is provided with a plurality of stations, and the stations are arranged on the periphery of the disc at intervals;

the fixture assemblies are arranged on the disc and correspond to the stations;

the plurality of clamp opening assemblies are arranged corresponding to part of the clamp assemblies;

the tab searching assembly, the adjusting assembly and the welding assembly are sequentially arranged at the stations, the tab searching assembly is used for adjusting the position of the to-be-welded battery cell, the adjusting assembly is used for adjusting the position and the shape of the to-be-welded tab, and the welding assembly is used for welding the to-be-welded tab;

and the positioning assembly and the pole lug searching assembly are respectively positioned at two sides of the clamp assembly corresponding to the pole lug searching assembly and are arranged on the base.

2. The tab co-welding device as claimed in claim 1, wherein:

the transfer assembly is used for moving the welded battery cell out of the tab joint welding device;

the plurality of stations further comprise a starting station, and the starting station is positioned between the tab searching assembly and the transferring assembly;

the plurality of stations further comprise an idle station, and the idle station is located between the welding assembly and the transfer assembly.

3. The tab co-welding device as claimed in claim 1, wherein: the tab joint welding device further comprises a detection assembly, the detection assembly is mounted on the base and arranged between the adjusting assembly and the welding assembly, and the detection assembly is used for detecting the position of the tab to be welded.

4. The tab co-welding device as claimed in claim 3, wherein: the detection assembly is provided with a detection optical fiber sensor, and the detection optical fiber is arranged along a displacement path of the to-be-welded lug.

5. The tab co-welding device as claimed in claim 3 or 4, wherein: the tab joint welding device further comprises a signal receiving assembly, the signal receiving assembly is mounted on the base and arranged between the tab searching assembly and the adjusting assembly, and the signal receiving assembly is used for receiving signals transmitted by the detecting assembly.

6. The tab co-welding device as claimed in claim 1, wherein: the positioning assembly is arranged in the middle of the disc and comprises a positioning part and a positioning cylinder, wherein the positioning part is connected with the positioning cylinder and is arranged at one end, close to the clamp assembly, of the positioning assembly.

7. The tab co-welding device as claimed in claim 1, wherein: the tab searching assembly is provided with a tab searching cylinder, a stepping motor, a correction wheel and a tab searching correlation optical fiber, the stepping motor is in power connection with the correction wheel, and the stepping motor is used for driving the correction wheel to drive the battery core to rotate; the tab searching correlation optical fiber comprises a first correlation optical fiber and a second correlation optical fiber which are respectively aligned with the correction wheel and the to-be-welded battery cell; the pole ear searching cylinder is used for driving the correction wheel to generate displacement.

8. The tab co-welding device of claim 1, wherein: the adjusting assembly comprises an adjusting cylinder and a shaping component, and the adjusting cylinder is connected with the shaping component and drives the shaping component to generate displacement.

9. The tab co-welding device as claimed in claim 2, wherein: the clamp assembly comprises a clamp righting clamp, a tension spring and an opening clamp block, the tension spring is connected with the clamp righting clamp, the opening clamp block is displaced to drive the clamp righting clamp to open, and the clamp righting clamp is pulled by the tension force of the tension spring to fasten the clamp righting clamp to the to-be-welded battery cell through the paper wool; the clamp opening assembly is arranged on the starting station, the transferring assembly and the pole lug searching assembly, the clamp opening assembly comprises a clamp opening cylinder and a clamp opening ejector rod, the clamp opening cylinder is connected with the clamp opening ejector rod and drives the clamp opening ejector rod to generate displacement, and the clamp opening ejector rod is arranged corresponding to the clamp opening block.

10. The tab co-welding device as claimed in claim 1, wherein: the welding assembly comprises a welding cylinder and a welding head, and the welding cylinder is connected with and drives the welding head to generate displacement.

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