CN210908521U - Welding device and battery production line - Google Patents

Abstract

The utility model relates to a battery manufacturing technology field specifically discloses a welding set and battery production line. The welding device comprises a fixing mechanism and a laser welding mechanism, wherein the fixing mechanism is arranged above a first bearing mechanism, the fixing mechanism is configured to compress a to-be-welded part on the first bearing mechanism, the fixing mechanism comprises a first compressing assembly and a second compressing assembly, the first compressing assembly and the second compressing assembly can be close to or far away from each other to adjust the distance between the first compressing assembly and the second compressing assembly, and the laser welding mechanism is arranged above the fixing mechanism and is configured to weld the to-be-welded part. Through setting up the first subassembly and the second that compress tightly that can be close to each other or keep away from and compress tightly the subassembly, can adjust distance between the two to adapt to compressing tightly of the electric core of different specifications, the commonality is stronger, labour saving and time saving, can improve the production efficiency of production line.

Description

Welding device and battery production line

Technical Field

The utility model relates to a battery manufacturing technology field especially relates to a welding set and battery production line.

Background

With the rapid development of economy, the lithium battery is widely applied, the battery cell is an important component of the lithium battery, and after the adhesive tape pasting operation is completed on the end face of the battery cell main body of the battery cell, the flexible circuit board needs to be welded on the lug of the battery cell. The existing welding device is poor in universality and cannot be used for welding flexible circuit boards on the electric cores of various specifications, and when the flexible circuit boards are welded on the electric cores of different specifications at each time, the welding device is required to be used for completing the welding, so that time and labor are wasted, and the production efficiency of a production line is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a welding set and battery production line, the commonality is strong, can adapt to the electric core of multiple specification and the welding of flexible circuit board.

As the conception, the utility model adopts the technical proposal that:

a welding device, the welding device is located above a first bearing mechanism, the first bearing mechanism is used for bearing a part to be welded, and the welding device comprises:

the fixing mechanism is arranged above the first bearing mechanism and is configured to press the part to be welded on the first bearing mechanism, the fixing mechanism comprises a first pressing component and a second pressing component, and the first pressing component and the second pressing component can approach or move away from each other to adjust the distance between the first pressing component and the second pressing component;

and the laser welding mechanism is arranged above the fixing mechanism and is configured to weld the to-be-welded parts.

As a preferable aspect of the welding device, the laser welding mechanism includes a welding unit and a welding lifting/lowering driving unit configured to drive the welding unit to move up and down to adjust a distance between the welding unit and the first bearing mechanism.

As a preferable aspect of the welding apparatus, the welding lift driving assembly includes:

welding the mounting frame;

a welding driving member disposed on the welding mounting bracket;

the welding screw rod extends along the vertical direction, and one end of the welding screw rod is connected with the output end of the welding driving piece;

and the welding screw nut is sleeved on the welding screw, and the welding assembly is arranged on the welding screw nut.

As a preferable aspect of the welding device, the laser welding mechanism further includes a welding guide assembly, and the welding guide assembly includes:

the welding guide sliding rail is arranged in parallel with the welding lead screw;

and the welding guide sliding block is arranged on the welding assembly and is in sliding fit with the welding guide sliding rail.

As a preferable scheme of the welding device, the welding driving piece is a driving hand wheel.

As a preferable aspect of the welding device, the fixing mechanism further includes a pressing driving assembly configured to drive the first pressing assembly and the second pressing assembly to move up and down to approach or separate from the first carrying mechanism.

As a preferable aspect of the welding apparatus, the pressing drive assembly includes:

the mounting frame is pressed tightly;

the compaction lifting driving piece is arranged on the compaction mounting frame;

compress tightly the loading board, first compress tightly the subassembly with the second compresses tightly the subassembly all set up in compress tightly on the loading board, compress tightly the output of lift driving piece with compress tightly the loading board and link to each other.

As a preferable aspect of the welding apparatus, the fixing mechanism further includes a pressing elevation guide assembly, and the pressing elevation guide assembly includes:

the pressing lifting guide sliding rail is arranged on the pressing mounting frame and extends in the vertical direction;

and the compression lifting guide sliding block is arranged on the compression bearing plate and is in sliding fit with the compression lifting guide sliding rail.

As a preferable scheme of the welding device, the first pressing assembly comprises a first pressing block and a first pressing horizontal driving piece, and the first pressing horizontal driving piece can drive the first pressing block to move in the horizontal direction;

the second pressing assembly comprises a second pressing block and a second pressing horizontal driving piece, and the second pressing horizontal driving piece can drive the second pressing block to move along the horizontal direction so as to be close to or far away from the first pressing block.

In order to achieve the above object, the present invention further provides a battery production line, including the welding device according to any one of the above aspects.

The utility model has the advantages that:

the utility model provides a welding device, which is provided with a laser welding mechanism and is used for welding a flexible circuit board on an electric core; the fixing mechanism is arranged and used for pressing the to-be-welded part on the first bearing mechanism, so that the to-be-welded part is fixed; the fixing mechanism comprises a first pressing component and a second pressing component, the first pressing component and the second pressing component can be close to or far away from each other to adjust the distance between the first pressing component and the second pressing component, so that the battery cell pressing mechanism is suitable for pressing of battery cells of different specifications, the universality is strong, time and labor are saved, and the production efficiency of a production line can be improved.

The utility model provides a battery production line, including above-mentioned welding set, through setting up above-mentioned welding set, make this battery production line can continuous production, need not shut down and install suitable welding set again, save process time, production efficiency is higher.

Drawings

Fig. 1 is a schematic structural diagram of a battery production line provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first feeding mechanism in a battery production line according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first gripping device in a battery production line according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a workbench in a battery production line according to an embodiment of the present invention;

fig. 5 is a schematic view of a position relationship between the clamp opening and closing mechanism and the first bearing mechanism in the battery production line provided by the embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is a schematic structural view of a first bearing mechanism in a battery production line provided by the embodiment of the present invention with a fixed clamping plate hidden;

fig. 8 is a schematic structural view of a clamp opening and closing mechanism in a battery production line provided by the embodiment of the invention;

fig. 9 is a schematic structural diagram of a welding device in a battery production line according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a laser welding mechanism in a battery production line according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a fixing mechanism in a battery production line according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a welding spot shaping device and a detection device in a battery production line according to an embodiment of the present invention.

In the figure:

1-a welding device; 11-a laser welding mechanism; 111-welding a lift drive assembly; 1111-welding the mounting rack; 1112-welding the drive; 1113-welding a lead screw; 1114-welding the lead screw nut; 112-welding the assembly; 113-a weld guide assembly; 1131-welding a guide rail; 1132 — welding guide slider; 12-a fixing mechanism; 121-a first hold-down assembly; 1211 — a first compression block; 1212-a first compacting horizontal drive; 122-a second compression assembly; 1221-a second compact; 1222-a second compacting horizontal drive; 123-a compression drive assembly; 1231-compacting the mounting frame; 1232 — a compression lift drive; 1233-compacting the carrier plate; 124-pressing lifting guide components; 1241-pressing a lifting guide slide rail; 1242-pressing the lifting guide slide block;

2-a workbench; 21-a turntable; 22-a rotary drive mechanism; 23-a second bearing mechanism; 24-a first carrier mechanism; 241-a clamp; 2411-moving the clamping plate; 2412-fixing the clamping plate; 242-wedge block; 243-fixed bearing block; 2431-avoidance holes;

3-a first gripping device; 31 — a first drive source; 32-a first rotating arm; 33-a second drive source; 34-a second rotating arm; 35-a first lift drive source; 36-a suction cup;

4-a welding spot shaping device; 41-upper shaping plate; 42-a lower shaping plate; 43-a shaping horizontal drive;

5-a detection device; 51-a CCD detection member; 52-a backlight;

6-a feeding device; 61-a first feed mechanism; 611-a feeding driving source; 612-a loading platform; 613-a loading moving drive source; 614-a transmission belt; 615-driving wheel; 616-a drive wheel; 617-belt; 618-tensioning wheel;

7-defective product conveying means;

8-a clamp opening and closing mechanism; 81-opening and closing driving piece; 82-opening and closing the driving roller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a battery production line for producing and manufacturing battery cores. The battery cell comprises a battery cell main body and a tab, wherein the tab is arranged at one end of the battery cell main body, and a Pulse Code Modulation (PCM) plate and a flexible circuit board are required to be welded on the tab of the battery cell, wherein the PCM plate is positioned between the flexible circuit board and the tab of the battery cell.

As shown in fig. 1, the battery production line provided by the present embodiment includes a workbench 2, and a first gripping device 3, a second gripping device (not shown in the figure), a welding device 1, a welding spot shaping device 4, and a detection device 5, which are arranged around the periphery of the workbench 2. The welding device comprises a workbench 2, a first grabbing device 3, a second grabbing device, a welding device 1, a welding point shaping device 4 and a detection device 5, wherein the workbench 2 is used for bearing a first workpiece to be welded, the first grabbing device is configured to grab the first workpiece to be welded and transfer the first workpiece to be welded onto the workbench 2, the second grabbing device is configured to grab a second workpiece to be welded and transfer the second workpiece to be welded onto the workbench 2, the second workpiece is configured to be welded onto the first workpiece, the welding point shaping device is configured to shape a welding point on the first workpiece and the second workpiece which are welded, and the detection device 5 is configured to detect the welding quality of the first workpiece and the second workpiece which are shaped.

It should be noted that, in this embodiment, the first workpiece specifically refers to an electrical core, and the second workpiece specifically refers to a flexible circuit board. Of course, in other embodiments, the first and second workpieces may be other parts that need to be welded together. In addition, in the present embodiment, the PCM board is loaded manually.

Through setting up workstation 2 and enclosing first grabbing device 3, second grabbing device, welding set 1, solder joint shaping device 4 and detection device 5 of locating 2 peripheries of workstation, make compact structure, area less of this battery production line, the utilization ratio in workshop is higher, makes things convenient for operating personnel centralized management. During operation, first grabbing device 3 can accomplish the material loading of electric core, and the material loading of flexible circuit board can be accomplished to the second grabbing device, and welding set 1 can weld flexible circuit board and PCM board on electric core, and solder joint shaping device 4 can carry out the plastic to the solder joint of accomplishing on the welded electric core, and detection device 5 can detect the surface quality of accomplishing the electric core of plastic. The battery production line that this embodiment provided, through the mutually supporting between workstation 2, first grabbing device 3, second grabbing device, welding set 1, solder joint shaping device 4 and detection device 5, guaranteed off-the-shelf quality, degree of automation is higher, and production efficiency is higher.

Further, the battery production line also comprises a feeding device 6 and a discharging device, wherein the feeding device 6 is used for bearing the previous working procedure, and the discharging device is used for bearing the next working procedure. Through setting up loading attachment 6 and unloader, can realize the last unloading operation of electric core and flexible circuit board, degree of automation is higher, guarantees to produce the line in succession.

Specifically, the feeding device 6 includes a first feeding mechanism 61 and a second feeding mechanism (not shown in the figure), the first feeding mechanism 61 is used for receiving the electric core transmitted in the previous process, the second feeding mechanism is used for receiving the flexible circuit board transmitted in the previous process, the first grabbing device 3 can grab the electric core on the first feeding mechanism 61 and transfer the electric core to the workbench 2, the second grabbing device can grab the flexible circuit board on the second feeding mechanism and transfer the flexible circuit board to the workbench 2, and in addition, the first grabbing device 3 can also transfer the electric core which is detected to the blanking device.

Preferably, the battery production line further comprises a defective product conveying device 7, and when the welded battery cells detected by the detection device 5 are unqualified, the first grabbing device 3 can also transfer the unqualified battery cells to the defective product conveying device 7, so that the operation efficiency is not affected, and the quality of finished products is ensured.

In order to ensure stable conveyance of the first workpiece by the first feeding mechanism 61, as shown in fig. 2, the first feeding mechanism 61 includes a feeding driving source 611, a feeding platform 612, a feeding moving driving source 613, and a transmission belt 614, the feeding driving source 611 is specifically a feeding motor, an output end of the feeding driving source 611 is connected to the feeding platform 612 through a screw nut pair, and the feeding driving source 611 drives the feeding platform 612 to move. The loading platform 612 is provided with a loading moving drive source 613, the loading moving drive source 613 is specifically a moving motor, the loading platform 612 is rotatably provided with a driving wheel 615 and a driven wheel, an output end of the loading moving drive source 613 is connected with the driving wheel 615, a belt 617 is tensioned and wound between the driving wheel 615 and the driving wheel 616, and the loading moving drive source 613 drives the driving wheel 615 to rotate and drives the belt 617 to move, so that the driving wheel 616 rotates. In order to ensure the tensioning effect of the belt 617, a tensioning wheel 618 is further arranged on one side of the belt 617, so that the tensioning effect is achieved, and the reliability of transmission connection is ensured. With the rotation of the driving wheel 616, a transmission belt 614 is wound between the driving wheel 616 and the driven wheel, and the transmission belt 614 is used for carrying the cell to be welded, so that the cell to be welded can be conveyed through the transmission belt 614 under the driving of the driving wheel 616.

By arranging the feeding driving source 611 and the feeding platform 612, the integral movement of the transmission belt 614 is realized, so that the position adjustment between the transmission belt 614 and the rotating platform 611 is realized, and the operation flexibility is realized; meanwhile, by arranging the feeding moving drive source 613 and the transmission belt 614, the cells to be welded can be orderly conveyed in a certain sequence. It is understood that the second feeding mechanism, the blanking device and the defective product conveying device 7 are similar to the first feeding mechanism 61 in structure and principle, and are different only in the arrangement position, so that the description is omitted.

As shown in fig. 3, the first gripping device 3 may be a manipulator or an industrial robot, the first gripping device 3 specifically includes a first driving source 31, a first rotating arm 32, a second driving source 33, a second rotating arm 34, a first lifting driving source 35, and a suction cup 36, the first driving source 31 and the second driving source 33 may each be specifically a rotating motor, an output end of the first driving source 31 is connected to the first rotating arm 32, and the first driving source 31 can drive the first rotating arm 32 to rotate. The first rotating arm 32 is provided with a second driving source 33, an output end of the second driving source 33 is connected to the second rotating arm 34, and the second driving source 33 can drive the second rotating arm 34 to rotate. A first lifting drive source 35 is arranged on the second rotating arm 34, an output end of the first lifting drive source 35 is connected to the suction cup 36, and the first lifting drive source 35 can drive the suction cup 36 to move towards or away from the battery cell along the vertical direction. The sucker 36 is communicated with the vacuum generator, and the battery cell is sucked under the action of vacuum extracted by the vacuum generator.

By arranging the first driving source 31, the first rotating arm 32, the second driving source 33 and the second rotating arm 34, the rotation with multiple degrees of freedom is realized, and the flexibility of loading and unloading is realized in a limited space; through setting up first lift driving source 35 and sucking disc 36, the removal of first lift driving source 35 drive sucking disc 36 has guaranteed the accuracy of snatching electric core.

Further, in order to guarantee the accuracy of grabbing and counterpointing the electric core, be provided with first locating piece (not shown in the figure) between workstation 2 and first feed mechanism 61, first grabbing device 3 absorbs electric core from first feed mechanism 61, shifts electric core to first locating piece top earlier, and first grabbing device 3 need not to put down electric core, realizes electric core and first grabbing device 3's relative position discernment, then further shifts electric core to second bearing mechanism 23 on. Specifically, the first positioning member may employ an infrared sensor or a CCD industrial camera for position detection to achieve the accuracy of position positioning.

It is understood that the first gripping device 3 and the second gripping device are similar in structure and principle, and only differ in that the first gripping device 3 is used for gripping the cell on the first feeding mechanism 61 onto the workbench 2 and selectively transferring the cell subjected to detection onto the blanking device or the defective product conveying device 7, the second gripping device grips the flexible circuit board on the second feeding mechanism and transfers the flexible circuit board onto the workbench 2, and the objects gripped by the first gripping device 3 and the second gripping device are different. It can be understood that a second positioning element (not shown in the figure) is arranged between the workbench 2 and the second feeding mechanism, the second positioning element is similar to the first positioning element in structure and principle, the difference is only in the difference of the arrangement positions, and the second positioning element can ensure the accuracy of grabbing and aligning the flexible circuit board.

As shown in fig. 4, the working table 2 includes a rotating disc 21, a rotary driving mechanism 22, a first carrying mechanism 24 and a second carrying mechanism 23, the rotary driving mechanism 22 is configured to drive the rotating disc 21 to rotate, the first carrying mechanism 24 is used for carrying the flexible circuit board and the PCM board to be welded, the second carrying mechanism 23 is used for carrying the battery cells to be welded, and the first carrying mechanism 24 and the second carrying mechanism 23 are distributed in parallel along the radial direction of the rotating disc 21.

Specifically, in this embodiment, the cell main body of the cell is placed on the second bearing mechanism 23, the tab of the cell is placed on the first bearing mechanism 24, the flexible circuit board is placed on the first bearing mechanism 24, and the PCM board is placed between the tab and the flexible circuit board through manual loading. During welding, the welding device 1 welds the flexible circuit board and the PCM board to the tab of the battery cell simultaneously.

Preferably, the first bearing mechanism 24 and the second bearing mechanism 23 are provided in plurality, and the plurality of first bearing mechanisms 24 and the plurality of second bearing mechanisms 23 are provided at intervals along the circumferential direction of the turntable 21. Each first support means 24 can hold a flexible printed circuit board, and each second support means 23 can hold a cell accordingly. In this embodiment, it is preferable that the number of the first bearing mechanisms 24 and the second bearing mechanisms 23 is six, an included angle between two adjacent second bearing mechanisms 23 is about 60 °, and each second bearing mechanism 23 corresponds to one station, which is a battery cell loading and unloading station, a flexible circuit board loading station, a PCM loading station, a welding station, a shaping station, and a detection station. The rotary driving mechanism 22 is specifically a rotary motor, the output end of the rotary driving mechanism 22 is connected to the rotary table 21, the rotary driving mechanism 22 can drive the rotary table 21 and drive the first bearing mechanism 24 and the second bearing mechanism 23 to rotate, so that each of the first bearing mechanism 24 and the second bearing mechanism 23 can sequentially pass through the battery cell feeding and discharging station, the flexible circuit board feeding station, the PCM feeding station, the welding station, the shaping station and the detection station, and corresponding operation is completed. Of course, in other embodiments, the number of the first bearing mechanisms 24 and the second bearing mechanisms 23 can be adjusted according to actual conditions to adapt to production.

In order to achieve the clamping of the flexible circuit board and the PCM board by the first carrier mechanism 24, as shown in fig. 5-8, the first carrier mechanism 24 includes a clamp 241, and the clamp 241 is used for clamping the flexible circuit board and the PCM board to be welded.

Further, the battery production line further includes a clamp opening and closing mechanism 8, and the clamp opening and closing mechanism 8 is configured to drive opening and closing of the clamp 241 to clamp or unclamp the flexible circuit board and the PCM board. Preferably, as shown in fig. 5, in this embodiment, the fixture opening and closing mechanism 8 is disposed below the first bearing mechanism 24, in order to save the number of the fixture opening and closing mechanisms 8 and reduce the manufacturing cost, the fixture opening and closing mechanisms 8 are disposed on the battery cell loading and unloading station, the flexible circuit board loading station, and the PCM loading station, and the fixture opening and closing mechanisms 8 are not disposed on the welding station, the shaping station, and the detection station, so that the structure of the battery production line can be simplified, and the manufacturing cost can be reduced. Of course, in other embodiments, the clamp opening and closing mechanism 8 may be integrated with the first bearing mechanism 24, and the above functions can be achieved.

Specifically, as shown in fig. 6 to 8, the clamp 241 includes a movable clamping plate 2411 and a fixed clamping plate 2412, the flexible circuit board and the PCM board to be welded are disposed between the movable clamping plate 2411 and the fixed clamping plate 2412, a wedge block 242 is disposed on the movable clamping plate 2411, the clamp opening and closing mechanism 8 includes an opening and closing driving element 81 and an opening and closing driving roller 82, the opening and closing driving roller 82 is rotatably disposed at an output end of the opening and closing driving element 81, and the opening and closing driving roller 82 can abut against a wedge surface of the wedge block 242 to drive the movable clamping plate 2411 to approach or leave the fixed clamping plate 2412. The movement of the opening and closing driving roller 82 in the vertical direction can be converted into the movement of the wedge block 241 in the horizontal direction through the wedge surface on the wedge block 241. Through will opening and close the drive roller 82 and rotate and set up in the output of opening and close driving piece 81, can reduce the frictional force of opening and close between drive roller 82 and the wedge 242, reduce wearing and tearing between the two, the extension is opened and close the life of drive roller 82 and wedge 242. Preferably, in this embodiment, the movable clamping plate 2411 and the wedge block 242 are integrally formed, so as to reduce the link of part assembly and reduce the workload of operators.

Further, the first bearing mechanism 24 further includes a fixed bearing block 243, the fixed bearing block 243 plays a role of supporting the whole clamp 241, as shown in fig. 7, an avoiding hole 2431 is formed in the fixed bearing block 243, the wedge block 242 and the avoiding hole 2431 are arranged oppositely, the opening and closing driving member 81 can drive the opening and closing driving roller 82 to move upwards to pass through the avoiding hole 2431 and abut against a wedge surface of the wedge block 242, and therefore the movable clamping plate 2411 is pushed to move towards a direction away from the fixed clamping plate 2412, so that the clamp 241 is opened.

Further, as shown in fig. 9, the welding device 1 includes a laser welding mechanism 11 and a fixing mechanism 12, wherein the fixing mechanism 12 is disposed above the first bearing mechanism 24, the fixing mechanism 12 is configured to press the tab of the battery cell onto the first bearing mechanism 24, the fixing mechanism 12 includes a first pressing component 121 and a second pressing component 122, and the first pressing component 121 and the second pressing component 122 can be close to or far from each other to adjust the distance therebetween; the laser welding mechanism 11 is disposed above the fixing mechanism 12, and is configured to weld the flexible circuit board and the PCM board to the cell.

Through setting up first compress tightly the subassembly and the second compresses tightly the subassembly, and the distance between the two is adjustable, can adapt to compressing tightly of the electric core of different specifications, and the commonality is stronger, and labour saving and time saving can improve the production efficiency of this battery production line.

Further, as shown in fig. 9-10, the laser welding mechanism 11 includes a welding assembly 112 and a welding lifting driving assembly 111, and the welding lifting driving assembly 111 is configured to drive the welding assembly 112 to move up and down to adjust a distance between the welding assembly 112 and the first bearing mechanism 24.

Specifically, welding lift drive assembly 111 includes welding mounting bracket 1111, welding driving piece 1112, welding lead screw 1113 and welding lead screw nut 1114, and welding driving piece 1112 sets up on welding mounting bracket 1111, and welding lead screw 1113 extends along vertical direction, and welding lead screw 1113's one end links to each other with the output of welding driving piece 1112, and welding lead screw nut 1114 overlaps and locates on welding lead screw 1113, and welding subassembly 112 sets up on welding lead screw nut 1114. Preferably, the welding mounting bracket 1111 is further provided with scale marks, and the welding assembly 112 is provided with a pointer, so that the lifting distance of the welding assembly 112 can be precisely controlled.

In this embodiment, the welding driving element 1112 is a driving handwheel, and the operator can observe the scale lines and the pointer and adjust the lifting process of the welding assembly 112 by manually adjusting the lifting process of the welding assembly 112, so as to ensure the accuracy of the lifting process of the welding assembly 112.

Preferably, the laser welding mechanism 11 further comprises a welding guide assembly 113, and the welding guide assembly 113 is used for providing guidance during the lifting and lowering of the welding assembly 112. Specifically, the welding guide assembly 113 includes a welding guide rail 1131 and a welding guide slider 1132, the welding guide rail 1131 is disposed in parallel with the welding lead screw 1113, and the welding guide slider 1132 is disposed on the welding assembly 112 and is slidably fitted on the welding guide rail 1131. By arranging the welding guide assembly 113, the stability of the lifting process of the welding assembly 112 can be ensured.

Further, as shown in fig. 11, the fixing mechanism 12 further includes a pressing driving assembly 123, and the pressing driving assembly 123 is configured to drive the first pressing assembly 121 and the second pressing assembly 122 to move up and down to approach or move away from the first bearing mechanism 24, so as to press or release the tabs of the battery cells.

Further, compress tightly drive assembly 123 including compressing tightly mounting bracket 1231, compressing tightly lift drive 1232 and compressing tightly loading board 1233, compress tightly lift drive 1232 and set up on compressing tightly mounting bracket 1231, first compress tightly subassembly 121 and second compress tightly subassembly 122 and all set up on compressing tightly loading board 1233, compress tightly the output of lift drive 1232 and compress tightly loading board 1233 and link to each other.

Preferably, the fixing mechanism 12 further includes a pressing elevation guide assembly 124, and the pressing elevation guide assembly 124 is used for providing guidance for the elevation process of the first pressing assembly 121 and the second pressing assembly 122. Specifically, compress tightly lift direction subassembly 124 including compressing tightly lift direction slide rail 1241 and compressing tightly lift direction slider 1242, compress tightly lift direction slide rail 1241 and set up on compressing tightly mounting frame 1231 to extend along vertical direction, compress tightly lift direction slider 1242 and set up on compressing tightly loading board 1233, and sliding fit compresses tightly lift direction slide rail 1241. By providing the pressing elevation guide assembly 124, the stability of the elevation process of the first pressing assembly 121 and the second pressing assembly 122 can be ensured.

Further, the first pressing assembly 121 includes a first pressing block 1211 and a first pressing horizontal driving member 1212, the first pressing horizontal driving member 1212 can drive the first pressing block 1211 to move in the horizontal direction, the second pressing assembly 122 includes a second pressing block 1221 and a second pressing horizontal driving member 1222, and the second pressing horizontal driving member 1222 can drive the second pressing block 1221 to move in the horizontal direction to approach or separate from the first pressing block 1211.

Preferably, springs are arranged between the first pressing assembly 121 and the pressing bearing plate 1233 and between the second pressing assembly 122 and the pressing bearing plate 1233, and the springs play a role of buffering, so that the situation that when the first pressing block 1211 and the second pressing block 1221 move downwards, the springs are in rigid contact with the tabs of the battery cell to damage the tabs of the battery cell can be avoided.

Preferably, the first compressing block 1211 and the second compressing block 1221 are provided with a hole for avoiding, and the laser emitted by the welding assembly 112 can realize the welding process of the tab of the battery cell with the PCM board and the flexible circuit board through the hole for avoiding.

Further, after the welding device 1 completes welding of the PCM board and the flexible circuit board with the tab of the battery cell, the welding point on the PCM board and the flexible circuit board needs to be shaped. As shown in fig. 12, the welding spot shaping device includes an upper shaping plate 41, a lower shaping plate 42, a shaping lifting driving assembly and a shaping horizontal driving member 43, the upper shaping plate 41 is located above the first carrying mechanism 24, the lower shaping plate 42 is located below the first carrying mechanism 24, the shaping lifting driving assembly is configured to drive the upper shaping plate 41 and the lower shaping plate 42 to approach or separate from the first carrying mechanism 24 in the vertical direction, and the shaping horizontal driving member 43 is configured to drive the upper shaping plate 41 and the lower shaping plate 42 to approach or separate from the first carrying mechanism 24 in the horizontal direction. Through setting up plastic lift drive assembly drive and go up integer board 41 and down integer board 42 and be close to each other or keep away from, can make and go up integer board 41 and down integer board 42 and carry out the plastic from the solder joint that the top and the below of electric core formed on to electric core respectively, guarantee the roughness on utmost point ear surface.

Preferably, the shaping elevating driving assembly may include an upper shaping driving member for driving the upper shaping plate 41 to be elevated and a lower shaping driving member for driving the lower shaping plate 42 to be elevated. The upper and lower truing drives may each be specifically a truing cylinder. Of course, in other embodiments, the shaping lifting driving assembly may also be a shaping motor and a screw nut pair, and the above functions may also be realized.

By providing the shaping horizontal driving member 43, after the shaping of the electric core is completed, the shaping horizontal driving member 43 can drive the upper shaping plate 41 and the lower shaping plate 42 to move in the horizontal direction to the direction away from the workbench 2, so as to provide sufficient space for the rotation of the workbench 2.

Further, the battery production line further includes a detection device 5, as shown in fig. 12, the detection device 5 includes a CCD detection piece 51 and a backlight 52, the CCD detection piece 51 is disposed above the workbench 2 and is used for detecting the surface quality of the shaped battery cell, and the backlight 52 is located below the CCD detection piece 51 and can provide illumination for the CCD detection piece 51. Backlight 52 specifically is circular structure, and it is located the below of electric core, and backlight 52 shines it from the below of electric core for light evenly encircles around locating electric core, plays better light filling effect, with the shooting image quality of guaranteeing CCD detection piece 51, thereby improves the precision that detects.

Preferably, as shown in fig. 12, the CCD detecting element 51 may be disposed above the welding spot shaping device 4, and the shaping operation and the detecting operation of the battery core may be completed at the same station, so as to simplify the operation flow of the battery production line.

In order to make the solution of the battery production line provided in this embodiment clearer, the working flow of the battery production line is briefly described with reference to fig. 1 to 12:

(1) the first grabbing device 3 grabs the to-be-welded battery cell on the first feeding mechanism 61, transfers the to-be-welded battery cell to the upper side of the first positioning piece, performs position recognition on the to-be-welded battery cell, and then the first grabbing device 3 transfers the to-be-welded battery cell to one of the second bearing mechanisms of the workbench 2;

(2) the rotary driving mechanism 22 drives the rotary table 21 to rotate to a flexible circuit board feeding station, the second grabbing device grabs the flexible circuit board on the second feeding mechanism and transfers the flexible circuit board to the upper part of the second positioning piece to identify the position of the second positioning piece, the clamp opening and closing mechanism 8 arranged on the flexible circuit board feeding station drives the clamp 241 to be opened, the second grabbing device places the flexible circuit board in the corresponding clamp 241, and then the clamp opening and closing mechanism 8 drives the clamp 241 to be closed so as to clamp the flexible circuit board;

(3) the rotary driving mechanism 22 drives the rotary table 21 to rotate to the PCM feeding station, the clamp opening and closing mechanism 8 arranged on the PCM feeding station drives the clamp 241 to open, an operator puts the PCM plate into the clamp 241, and then the clamp opening and closing mechanism 8 drives the clamp 241 to close so as to clamp the PCM plate;

(4) the rotary driving mechanism 22 drives the rotary table 21 to rotate to a welding station, the distance between the first pressing component 121 and the second pressing component 122 is adjusted according to the distance between the two tabs on the battery cell, so that the first pressing component 121 and the second pressing component 122 respectively press the two tabs on the first bearing mechanism 24, then the welding lifting driving component 111 drives the welding component 112 to move up and down to adjust the distance between the welding component 112 and the first bearing mechanism 24, and the welding component 112 emits laser to weld the flexible circuit board and the PCM board on the tabs of the battery cell;

(5) the rotary driving mechanism 22 drives the rotary table 21 to rotate to the shaping station, the shaping horizontal driving part 43 drives the upper shaping plate 41 and the lower shaping plate 42 to approach the workbench 2 along the horizontal direction, the upper shaping driving part drives the upper shaping plate 41 to move downwards, the lower shaping driving part drives the lower shaping plate 42 to move upwards so as to press welding points on the welded battery cell, then the upper shaping driving part drives the upper shaping plate 41 to move upwards, the lower shaping driving part drives the lower shaping plate 42 to move downwards, and the shaping horizontal driving part 43 drives the upper shaping plate 41 and the lower shaping plate 42 to move away from the workbench 2 along the horizontal direction;

(6) the rotary driving mechanism 22 drives the rotary table 21 to rotate to a detection station, the surface of the battery cell is shot through the CCD detection piece 51, and whether the welding quality is qualified is detected;

(7) the rotary driving mechanism 22 drives the rotary table 21 to rotate to the cell loading and unloading station, the clamp opening and closing mechanism 8 drives the clamp 241 to open, and the first grabbing device 3 selectively transfers the cells to the unloading device or the defective product conveying device 7 according to the detection result.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. Welding device, the welding device (1) being located above a first carrier means (24), the first carrier means (24) being adapted to carry a part to be welded, characterized in that it comprises:

a fixing mechanism (12) disposed above the first carrying mechanism (24), the fixing mechanism (12) being configured to press the to-be-welded member onto the first carrying mechanism (24), the fixing mechanism (12) including a first pressing assembly (121) and a second pressing assembly (122), the first pressing assembly (121) and the second pressing assembly (122) being capable of approaching or departing from each other to adjust a distance therebetween;

a laser welding mechanism (11) disposed above the fixing mechanism (12) and configured to weld the to-be-welded members.

2. The welding device according to claim 1, characterized in that the laser welding mechanism (11) comprises a welding assembly (112) and a welding lifting drive assembly (111), the welding lifting drive assembly (111) being configured to drive the welding assembly (112) up and down to adjust the distance between the welding assembly (112) and the first carrier mechanism (24).

3. Welding device according to claim 2, wherein said welding lift drive assembly (111) comprises:

welding the mounting bracket (1111);

a weld drive (1112) disposed on the weld mount (1111);

the welding screw rod (1113), the welding screw rod (1113) extends along the vertical direction, and one end of the welding screw rod (1113) is connected with the output end of the welding driving piece (1112);

the welding screw nut (1114) is sleeved on the welding screw (1113), and the welding assembly (112) is arranged on the welding screw nut (1114).

4. The welding device according to claim 3, characterized in that said laser welding mechanism (11) further comprises a welding guide assembly (113), said welding guide assembly (113) comprising:

a welding guide rail (1131) arranged in parallel with the welding screw (1113);

a weld guide slider (1132) disposed on the weld assembly (112) and slidably engaged to the weld guide rail (1131).

5. Welding device according to claim 3, wherein the welding drive (1112) is a drive handwheel.

6. The welding device according to claim 1, characterized in that the fixing mechanism (12) further comprises a pressing drive assembly (123), the pressing drive assembly (123) being configured to drive the first pressing assembly (121) and the second pressing assembly (122) to be lifted and lowered to be close to or far from the first carrying mechanism (24).

7. Welding device according to claim 6, wherein said pressing drive assembly (123) comprises:

a compression mount (1231);

a compression lifting drive (1232) disposed on the compression mounting frame (1231);

compress tightly loading board (1233), first compress tightly subassembly (121) with second compress tightly subassembly (122) all set up in compress tightly on loading board (1233), compress tightly the output of lift driving piece (1232) with compress tightly the loading board (1233) and link to each other.

8. The welding device according to claim 7, wherein the securing mechanism (12) further comprises a compression lift guide assembly (124), the compression lift guide assembly (124) comprising:

a compression lifting guide slide rail (1241) which is arranged on the compression mounting frame (1231) and extends in the vertical direction;

and the pressing lifting guide sliding block (1242) is arranged on the pressing bearing plate (1233) and is in sliding fit with the pressing lifting guide sliding rail (1241).

9. Welding device according to claim 7,

the first pressing assembly (121) comprises a first pressing block (1211) and a first pressing horizontal driving piece (1212), wherein the first pressing horizontal driving piece (1212) can drive the first pressing block (1211) to move in the horizontal direction;

the second pressing assembly (122) comprises a second pressing block (1221) and a second pressing horizontal driving piece (1222), and the second pressing horizontal driving piece (1222) can drive the second pressing block (1221) to move along the horizontal direction to be close to or far away from the first pressing block (1211).

10. A battery production line, characterized by comprising a welding device according to any one of claims 1-9.

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