Current collector plate stamping and welding production line

Abstract

The application relates to the technical field of batteries, and provides a current collector disc stamping and welding production line, which comprises a stamping device, a first feeding device, a second feeding device, a welding device and a sorting device. The stamping device is used for blanking a current collector disc, feeding the current collector disc to a current collector disc supporting cup assembly, and sorting the current collector disc. The first feeding device is used for feeding the qualified current collector disc after sorting to the welding device. The second feeding device is used for feeding a battery cell to the welding device. The welding device is used for welding the current collector disc to the top surface of the battery cell. The sorting device is used for sorting the battery cell after welding, so as to remove unqualified products. The current collector disc stamping and welding production line realizes current collector disc forming, feeding, separation from the current collector disc supporting cup assembly, welding to the top of the battery cell, and quality detection of the battery cell after welding. The devices are compactly arranged, the material transfer path is short, and the efficiency of the battery cell production is improved.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a current collector stamping and welding production line. Background Technology

[0002] The battery production process involves current collector punching, current collector sorting, current collector loading, current collector welding, and cell sorting. Each production process involving current collectors requires a dedicated production line, resulting in a large production line structure, long material transfer paths, and reduced production efficiency. Summary of the Invention

[0003] This invention provides a manifold stamping and welding production line to solve the problem of the large structure of existing manifold stamping and welding production lines.

[0004] This invention provides a manifold stamping and welding production line, comprising: a stamping device, a first feeding device, a second feeding device, a welding device, and a sorting device. The stamping device is used to stamp the manifolds, feed the manifolds onto the manifold cup assembly, and sort the manifolds. The first feeding device is used to feed the sorted and qualified manifolds onto the welding device. The second feeding device is used to feed the battery cells onto the welding device. The welding device is used to weld the manifolds to the top surface of the battery cells. The sorting device is used to sort the welded battery cells to remove defective products.

[0005] The current collector stamping and welding production line provided by the present invention, by setting up a stamping device, a first feeding device, a second feeding device, a welding device and a sorting device, realizes the forming, feeding, separation from the current collector cup assembly, welding to the top of the battery cell and the quality inspection of the battery cell after welding. The devices are compactly set up and the material transfer path is short, which improves the efficiency of battery cell production. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the structure of the manifold stamping and welding production line provided by the present invention;

[0008] Figure 2 This is a schematic diagram of the stamping mechanism;

[0009] Figure 3 This is a schematic diagram of the variable pitch mechanism;

[0010] Figure 4 yes Figure 1 The diagram shows the structure of the welding device.

[0011] Figure 5 This is a schematic diagram of the structure of the cam and the second turntable in the second rotating part;

[0012] Figure 6 yes Figure 4 The diagram shows the structure of the second clamping member.

[0013] Figure 7 yes Figure 1 The diagram shows the structure of the first feeding device.

[0014] Figure 8 yes Figure 7 The diagram shows the structure of the collector cup assembly.

[0015] Figure 9 This is a schematic diagram of the airway structure;

[0016] Figure 10 This is a schematic diagram of the structure of the first gas flow section;

[0017] Figure 11 yes Figure 4 The schematic diagram of the material handling mechanism shown in the figure is as follows;

[0018] Figure 12 yes Figure 11 The diagram shows the structure of the welding head;

[0019] Figure 13 yes Figure 11 The cross-sectional view of the welding head shown in the figure;

[0020] Figure 14 yes Figure 1 The diagram shows the structure of the sorting device.

[0021] Figure 15 yes Figure 14 One of the structural schematic diagrams of the second sorting mechanism shown in the figure;

[0022] Figure 16 This is a schematic diagram of the driver component;

[0023] Figure 17 yes Figure 14 The second schematic diagram of the third sorting mechanism shown in the figure;

[0024] Figure label:

[0025] 1: Welding device; 2: First feeding device; 3: Second feeding device; 4: Air circuit structure; 5: Sorting device; 6: Cell cup holder; 7: Collector cup holder assembly; 8: Transfer tray; 9: Stamping device;

[0026] 10: First rotating part; 11: First turntable; 12: Cam; 13: Second turntable; 14: Third rotating part; 15: Base; 16: First clamping component; 17: Second clamping component; 18: Fixing component; 21: First gear plate; 22: Collector plate conveyor line; 23: Second gear plate; 41: Slip ring; 42: Sealing plate; 43: Air inlet cover; 44: Main pipe; 45: First pipe; 46: Second pipe; 51: Detection mechanism; 52: Fourth clamping component; 53: Bearing plate; 54: Second sorting mechanism; 55: Non-conforming product conveyor line; 56: Third sorting mechanism; 57: Fifth clamping component; 58: Conforming product conveyor line; 71: Cup holder; 72: Positioning component; 93: Conveyor line; 94: First sorting mechanism;

[0027] 100: Turret; 101: Third actuator; 102: Welding head; 121: Limiting structure; 151: Lifting rod; 152: First slide groove; 171: First clamping part; 172: Second clamping part; 173: First elastic element; 174: Follower wheel; 175: First lever; 176: Second lever; 177: Cell clamping hole; 211: Notch; 421: First air inlet groove; 422: First air extraction groove; 431: Second air inlet groove; 432: Second air extraction groove; 433: Air inlet pipe; 511: Detection probe; 541: First limiting plate; 542: Second limiting plate; 543: Third clamping element; 544: First 545: Connecting plate; 546: Second driver; 711: Third turntable; 712: Fourth protrusion; 721: Second through hole; 722: Right angle portion; 723: Body; 724: Third through hole; 915: Upper mold; 916: Lower mold; 917: Material strip groove; 918: Second connecting plate; 919: Material strip; 920: Eccentric cam; 921: Fixed plate; 922: Moving plate; 923: Third limiting plate; 924: First track groove; 925: Second track groove; 926: Connecting piece; 927: First collector plate assembly; 928: Second collector plate assembly;

[0028] 1021: Second gas flow section; 1022: Adsorption section; 1023: First flow channel; 1024: Second flow channel; 1751: First protrusion; 1761: Second protrusion; 1771: First through groove; 1772: Second through groove; 5411: Second sliding groove; 5412: Third protrusion; 5413: First outer edge; 5421: Second outer edge;

[0029] 10211: First annular groove; 10212: Second annular groove; 10213: Fourth through hole; 10214: Fifth through hole; 10221: Adsorbent; 10231: Air blowing hole. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0031] The terms "first" and "second" in the specification and claims of this invention may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] The following is combined with Figures 1-17 This invention describes a manifold stamping and welding production line.

[0033] like Figure 1 As shown, in an embodiment of the present invention, the manifold stamping and welding production line includes: a stamping device 9, a first feeding device 2, a second feeding device 3, a welding device 1, and a sorting device 5.

[0034] Specifically, the stamping device 9 is used to punch the strip into collector trays, then load the collector trays onto the collector tray cup assembly 7, and sort the collector trays to remove defective products and empty cups. The first feeding device 2 is used to convey the collector tray cup assembly 7 carrying the collector trays to the welding device 1. The welding device 1 absorbs the collector trays, and the empty collector tray cup assembly 7 is transferred away by the first feeding device 2. The cell cup 6 carrying the battery cells is conveyed to the welding device 1 by the second feeding device 3. The welding device 1 clamps the battery cells, rotates, and transfers the battery cells and collector trays to the welding machine, where the collector trays are then welded to the top surface of the battery cells. After welding, the battery cells are transferred to the sorting device 5, which sorts the battery cells to separate qualified and unqualified products for separate conveying.

[0035] The current collector stamping and welding production line provided in this embodiment of the invention, by setting up a stamping device, a first feeding device, a second feeding device, a welding device and a sorting device, realizes the forming, feeding, separation from the current collector cup assembly, welding to the top of the battery cell and the quality inspection of the battery cell after welding. The devices are compactly set up and the material transfer path is short, which improves the efficiency of battery cell production.

[0036] like Figure 2As shown, in an embodiment of the present invention, the stamping device 9 includes a stamping mechanism for forming a collector plate. The stamping mechanism includes a die, an eccentric cam 919, and a first driver 915. The top surface of the die has a first through hole, and the die contains a strip groove 913 and a protrusion. The strip groove 913, the first through hole, and the protrusion are arranged opposite to each other. The first driver 915 drives the eccentric cam 919 to rotate. When the eccentric cam 919 rotates, it can drive the die to open and close. When the die is in the closed state, the protrusion stamps the strip 918 to form the collector plate.

[0037] Specifically, the mold includes an upper mold 911 and a lower mold 912. The upper mold 911 has a strip groove 913 for the strip 918 to pass through. The top surface of the lower mold 912 has a protrusion, and a first through hole is positioned opposite to the protrusion. The upper mold 911 is connected to a second connecting plate 914. A first driver 915 drives an eccentric cam 919 to rotate. During the rotation of the eccentric cam 919, when the high point of the eccentric cam 919 abuts against the second connecting plate 914, the upper mold 911 separates from the lower mold 912, and the strip 918 is fed in along the strip groove 913. When the low point of the eccentric cam 919 abuts against the second connecting plate 914, the upper mold 911 and the lower mold 912 close, and the protrusion presses the strip 918 in the strip groove 913 to form a collecting plate.

[0038] Furthermore, in this embodiment, the protrusion includes a first protrusion and a second protrusion, which are spaced apart along the conveying direction of the material belt 918. The first through hole includes a first group of first through holes and a second group of first through holes. The first group of first through holes is corresponding to the first protrusion, and the second group of first through holes is corresponding to the second protrusion. The first protrusion is used to punch through holes on the collector plate, such as positioning holes on the collector plate and electrolyte through holes in the center of the collector plate. The second protrusion is used to punch the collector plate from the material belt 918.

[0039] When the mold is in the closed state, the first protrusion passes through the first set of first through holes, and the material strip 918 punches out through holes on the collector plate. The second protrusion passes through the second set of first through holes, and the material strip 918 punches out the collector plate. The punching of the first set of collector plates is completed. The collector plate is attracted and transferred to the next station, and the material strip 918 continues to be conveyed along the conveying direction to start the punching of the next set of collector plates.

[0040] Furthermore, the first protrusion and the second protrusion are spaced apart along the first direction, wherein both the first and second protrusions are arranged in multiple rows along the second direction. Each row of the first protrusions has multiple first protrusions along the first direction, and each row of the second protrusions has multiple second protrusions along the first direction. Any two adjacent rows of the first protrusions are staggered along the second direction, and any two adjacent rows of the second protrusions are staggered along the second direction. The first direction is consistent with the extension direction of the material strip, and the second direction is perpendicular to the first direction, that is, the second direction is the width direction of the material strip 918. Correspondingly, multiple first groups of first through holes are arranged one-to-one with multiple first protrusions, and multiple second groups of first through holes are arranged one-to-one with multiple second protrusions.

[0041] In one embodiment, the first protrusions are arranged in two rows along the second direction, with two first protrusions in each row. The first protrusions in the first row are offset from any first protrusion in the second row along the second direction. Similarly, the second protrusions are arranged in two rows along the second direction, with the second protrusions in the first row being offset from any first protrusion in the second row along the second direction.

[0042] like Figure 2 As shown, the stamping mechanism further includes a second elastic element 916 and an adsorption component 917. The second elastic element 916 is disposed between the upper die 911 and the lower die 912, and is used to achieve elastic punching. The adsorption component 917 is disposed on the top surface of the upper die 911 and is located near the first set of first through holes. The adsorption component 917 is used to adsorb the excess material generated when the first protrusion punches the through holes on the collector plate in the first set of first through holes, ensuring the cleanliness of the first set of first through holes and avoiding affecting the next punching.

[0043] The manifold stamping and welding production line provided in this embodiment of the invention achieves automatic punching of the manifold by setting up a stamping mechanism and using the rotation of an eccentric cam to drive the mold to open and close, thereby improving the punching efficiency.

[0044] like Figure 3 As shown, in an embodiment of the present invention, the stamping device further includes a pitch-changing mechanism and a first sorting mechanism 94. The pitch-changing mechanism is used to adjust the pitch of the collector plate, and the first sorting mechanism 94 is used to sort the collector plate to remove defective products.

[0045] Specifically, the pitch-changing mechanism includes a fixed plate 921 and a moving assembly. The fixed plate 921 is used to place the first collector plate assembly 927. The moving assembly includes a moving plate 922 and a support plate. The support plate is located below the moving plate 922, and the moving plate 922 is movable relative to the support plate. The moving plate 922 is used to place the second collector plate assembly 928. The support plate can move along a first direction to one side of the fixed plate 921, wherein the first direction is parallel to the first collector plate assembly 927. The moving plate 922 can move relative to the support plate along a second direction, wherein the second direction is perpendicular to the first direction. By moving the support plate and the moving plate 922, the position adjustment between the second collector plate assembly 928 and the first collector plate assembly 927 is completed.

[0046] A set of punched collectors is adsorbed onto a fixed plate 921 and a movable plate 922. Both the fixed plate 921 and the movable plate 922 have a row of collectors, with equal spacing between adjacent collectors in each row. Using an electric or pneumatic actuator, the support plate is moved along a first direction until the movable assembly is positioned on one side of the fixed plate 921 in the first direction. That is, the second collector group 928 on the movable plate 922 is positioned on one side of the first collector group 927 in the first direction. The movable plate 922 then moves the second collector group 928 relative to the support plate along a second direction toward the first collector group 927, until the second collector group 928 and the first collector group 927 are collinear, thus aligning the two rows of collectors into a single row.

[0047] Furthermore, the moving component also includes a connector 926. The pitch-changing mechanism also includes a third limiting plate 923, which has a first track groove 924 and a second track groove 925. The first track groove 924 extends parallel to the first direction, and the second track groove 925 is inclined towards the direction close to the fixed plate 921. The first track groove 924 and the second track groove 925 are transitionally connected, and the included angle between the first track groove 924 and the second track groove 925 is greater than or equal to 90°. The first end of the connector 926 is connected to the moving plate 922, and the second end of the connector 926 is slidably connected within the first track groove 924. The connector 926 can move back and forth along the path of the first track groove 924 and the second track groove 925 to more accurately control the travel path of the moving component and achieve precise pitch changing.

[0048] Furthermore, the stamping device 9 also includes a feeding turntable, which is located above the stamping mechanism and the pitch-changing mechanism. The feeding turntable has at least two picking-up sections. After the collecting plates are stamped and formed, the first picking-up section of the feeding turntable picks up a set of stamped collecting plates. The feeding turntable rotates clockwise to place the collecting plates on the pitch-changing mechanism. After the pitch-changing mechanism adjusts the position of the collecting plates from two rows to one row, the feeding turntable rotates counterclockwise. The second picking-up section picks up the row of collecting plates after the pitch change. Then the feeding turntable rotates clockwise again to pick up and transfer the collecting plates to the collecting plate cup assembly 7 on the conveyor line 93.

[0049] like Figure 1 As shown, conveyor line 93 is used to transport the collecting tray cup-holding assembly 7. Conveyor line 93 is equipped with a variable-pitch threaded rod, which is used to adjust the pitch of the collecting tray cup-holding assembly 7 to ensure that the spacing between the collecting tray cup-holding assemblies 7 is equal, so that the feeding turntable can accurately place the collecting trays on the collecting tray cup-holding assembly 7. The collecting tray cup-holding assembly 7 is transported by conveyor line 93 to the first sorting mechanism 94. The first sorting mechanism 94 uses visual inspection to inspect the collecting trays on the collecting tray cup-holding assembly 7 to reject empty cups and defective products. Qualified collecting trays are transported by conveyor line 93 to the first feeding device 2.

[0050] like Figure 7 As shown, the first feeding device 2 includes: a first toothed disc 21 and a collector disc conveyor line 22. The collector disc conveyor line 22 is connected to the conveyor line 93. The first toothed disc 21 rotates synchronously with the welding device 1. The collector disc cup support assembly 7 is conveyed to the first toothed disc 21 by the conveyor line 93 and the collector disc conveyor line 22. The first toothed disc 21 is provided with a plurality of notches 211 in a ring. The shape of the notches 211 matches the shape of the collector disc cup support assembly 7. The notches 211 are used to engage with the collector disc cup support assembly 7. The first toothed disc 21 is used to transfer the collector disc cup support assembly 7 to the welding device 1.

[0051] When the first toothed disc 21 rotates, it transfers the collector cup assembly 7 to the welding device 1. The first toothed disc 21 has a plurality of notches 211 arranged in a ring. The shape of the notches 211 matches the shape of the collector cup assembly 7 so that the collector cup assembly 7 is engaged with the notches 211, thereby preventing the collector cup assembly 7 from rotating when the first toothed disc 21 rotates.

[0052] like Figure 8As shown, the collector tray cup assembly 7 includes a cup 71 and a positioning member 72. The cup 71 is used to accommodate the collector tray. The positioning member 72 includes a body 722 and a right-angled portion 721. The cup 71 is connected to the body 722. A limiting groove is provided on the collector tray conveyor line 22. The body 722 matches the limiting groove. The right-angled portion 721 is located on one side of the body 722 and is used to limit the position of the positioning member 72. This prevents the position and angle of the cup 71 from changing during the conveying process, which would cause the position and angle of the collector tray to change. This ensures that the collector tray is in the same angle and position for feeding, improving the accuracy and efficiency of subsequent production.

[0053] Furthermore, the right-angled portion 721 is a rectangular structure, and the body 722 is a semi-circular structure. The semi-circular structure is located on one side of the width direction of the rectangular structure, and the diameter of the semi-circular structure is the same as the width of the rectangular structure. The right-angled portion 721 of the positioning member 72 can prevent the cup 71 from rotating when the first toothed disc 21 rotates, avoid changes in the position and angle of the collecting plate inside the cup 71, and keep the collecting plate inside the cup 71 at the same angle and position for feeding.

[0054] To achieve precise positioning and movement, the notch 211 is provided with a first magnetic component, and the positioning component 72 is provided with a second magnetic component. The first and second magnetic components are located at the engagement point between the notch 211 and the positioning component 72. The first magnetic component uses magnetic attraction to draw the right-angled portion 721 of the positioning component 72 to the notch 211, thereby causing the collector cup assembly 7 to engage with the notch 211 at a preset angle and position.

[0055] The collector cup assembly 7 also includes a limiting member, which is located between the cup 71 and the positioning member 72. In this embodiment, the limiting member and the positioning member 72 are integrally formed magnetic components. The welding device 1 is provided with a third magnetic component, which is used to attract the second magnetic component, so that the welding device 1 uses magnetic attraction to attract and clamp the positioning member 72. The inner bottom surface of the cup 71 is provided with a plurality of fourth protrusions 711, which correspond one-to-one with the notches and / or through holes on the collector plate. This helps to fix the position of the collector plate, improve the positioning accuracy and stability of the collector plate, ensure that the collector plate is fed at the same angle or position, and thus improve the subsequent welding accuracy and production efficiency.

[0056] A second through hole 712 is provided at the center of the bottom of the cup 71, and a third through hole 723 is provided in the positioning member 72. The second through hole 712 and the third through hole 723 communicate with each other and serve as an air intake channel for negative pressure dust removal inside the cup 71. During negative pressure dust removal, external airflow enters the interior of the cup 71 through the air intake channel formed by the third through hole 723 and the second through hole 712, providing an airflow path for the external airflow, ensuring that the air pressure balance inside the cup 71 is maintained during negative pressure dust removal, improving the dust removal effect, and also preventing the cup 71 from being sucked in during the negative pressure dust removal process.

[0057] like Figure 1 As shown, the first feeding device 2 also includes a second toothed disc 23, which rotates synchronously with the welding device 1. The second toothed disc 23 is used to transfer the empty collector cup assembly 7 away. In this embodiment, the specific structure of the second toothed disc 23 is the same as that of the first toothed disc 21, so it will not be described again. A fourth magnetic element is provided at the notch of the second toothed disc 23 to use magnetic attraction to attract the empty collector cup assembly 7 from the welding device 1 and transfer it away by the second toothed disc 23.

[0058] like Figure 1 As shown, the second feeding device 3 is used to transport the battery cell. The battery cell is placed in the battery cell holder 6. Along the rotation direction of the welding device 1, the second feeding device 3 is located upstream of the first feeding device. The second feeding device 3 is used to transport the battery cell to the welding device 1.

[0059] like Figure 4 As shown, the welding device 1 includes a turret 100, multiple material-taking mechanisms, and multiple first clamping members 16. The turret 100 includes a first rotating part 10 and a second rotating part. The first rotating part 10 rotates synchronously with the second rotating part. The first rotating part 10 is provided with a gas passage structure 4. Multiple material-taking mechanisms are arranged in a ring on the outer wall of the first rotating part 10 and are connected to the gas passage structure 4. The material-taking mechanisms are used to adsorb the collector plate and spray protective gas during the welding of the collector plate. Multiple first clamping members 16 are arranged in a ring on the outer wall of the second rotating part. Each first clamping member 16 is located below a material-taking mechanism and is used to clamp the collector plate cup assembly 7.

[0060] The welding device 1 also includes multiple second clamping members 17, multiple fixing members 18, multiple lifting rods 151 and a base 15. The turret 100 also includes a third rotating part 14, which rotates synchronously with the second rotating part. Multiple second clamping members 17 are arranged in a ring on the outer wall of the second rotating part, and the second clamping members 17 are used to clamp the battery cells. Multiple fixing members 18 are arranged in a ring on the outer wall of the third rotating part 14, and the fixing members 18 are used to fix the battery cell cup 6. Each lifting rod 151 extends into the corresponding cell cup 6. The circumferential surface of the base 15 is provided with a first sliding groove 152. The first sliding groove 152 spirals upward along the rotation direction of the third rotating part 14. When the lifting rod 151 is at the high position of the first sliding groove 152, the lifting rod 151 can push the cell from the cell cup 6 into the second clamping member 17, where it is clamped by the second clamping member 17. Each material picking mechanism is provided with a first clamping member 16, a second clamping member 17, a fixing member 18, and a lifting rod 151.

[0061] Specifically, along the height direction of the turret 100, from top to bottom, a material-picking mechanism, a first clamping member 16, a second clamping member 17, a fixing member 18, and a lifting rod 151 are arranged sequentially. The material-picking mechanism, the first clamping member 16, the second clamping member 17, the fixing member 18, and the lifting rod 151 form a clamping structure. Multiple sets of this clamping structure are arranged in a ring around the outer wall of the turret 100. Specifically, the fixing member 18 is used to clamp the battery cell holder 6, and the battery cell is housed in the battery cell holder 6. The lifting rod 151 and the second clamping member 17 cooperate to lift the battery cell from inside the battery cell holder 6 into the second clamping member 17, where it is clamped. The first clamping member 16 is used to clamp the current collector cup assembly 7, which is located above the battery cell. The material-picking mechanism is used to adsorb the current collector. After the material handling mechanism picks up the collector plate, as the turret 100 rotates, the collector plate cup assembly 7 is transferred to the second toothed plate 23, so that the collector plate is located above the battery cell. When the two rotate to the welding station, the welding machine welds the collector plate to the top surface of the battery cell.

[0062] In this embodiment, the first rotating part 10, the second rotating part, and the third rotating part 14 rotate synchronously to drive the material handling mechanism, the first clamping member 16, the second clamping member 17, and the fixing member 18 to rotate synchronously. Each lifting rod 151 has a slider on its side, which is located in the first sliding groove 152. One end of each lifting rod 151 extends into the corresponding cell cup 6. When the third rotating part 14 drives the fixing member 18 to rotate, it can drive the corresponding lifting rod 151 to slide along the first sliding groove 152. When the lifting rod 151 slides to the high position of the first sliding groove 152, the lifting rod 151 pushes the cell out of the cell cup 6. At this time, the corresponding second clamping member 17 opens and clamps the cell. The second clamping member 17 clamps the cell, and the material handling mechanism adsorbs the current collector. When the turret 100 rotates to the welding machine, the welding machine welds the current collector to the top of the cell. During the welding process, the material handling mechanism sprays protective gas.

[0063] like Figure 5 and Figure 6 As shown, the second rotating part includes: a first turntable 11, a cam 12 and a second turntable 13 arranged sequentially from top to bottom. The first turntable 11 is located below the first rotating part 10, and the second turntable 13 is located above the third rotating part 14. The first rotating part 10, the first turntable 11, the second turntable 13 and the third rotating part 14 rotate synchronously.

[0064] Multiple first clamping members 16 are arranged in a ring on the circumferential surface of the first turntable 11. The first clamping members 16 are used to clamp the collector cup assembly 7. A material picking mechanism is provided above the first clamping members 16. The material picking mechanism is used to adsorb the collector plate on the collector cup assembly 7.

[0065] Multiple second clamping members 17 are arranged in a ring on the top surface of the second turntable 13. Each second clamping member 17 is rolledly connected to the outer edge of the cam 12. The outer edge of the cam 12 is provided with a limiting structure 121. The limiting structure 121 is arranged opposite to the high position of the first slide groove 152. When the second clamping member 17 abuts against the limiting structure 121, the second clamping member 17 is in the open state. When the second clamping member 17 passes the limiting structure 121, the second clamping member 17 is in the closed state. The second clamping member 17 is used to clamp the battery cell.

[0066] Specifically, when the second turntable 13 rotates synchronously with the first turntable 11, the cam 12 does not rotate, and one end of each second clamping member 17 rolls along the outer edge of the cam 12. When the second clamping member 17 rotates to the limiting structure 121, the limiting structure 121 blocks the movement of the second clamping member 17, causing the second clamping member 17 to open. This position is exactly opposite to the high position of the first slide groove 152, that is, when the lifting rod 151 pushes the battery cell out of the battery cell cup 6, the second clamping member 17 is in the open state, and the battery cell is located inside the second clamping member 17. When the second clamping member 17 passes the limiting structure 121, the second clamping member 17 closes, clamping the battery cell. In this embodiment, the limiting structure 121 is an arc-shaped protrusion.

[0067] like Figure 4 As shown, each second clamping member 17 includes: a first clamping part 171, a second clamping part 172, a first elastic member 173, and a follower wheel 174. Both the first clamping part 171 and the second clamping part 172 are connected to the second turntable 13. One end of the first clamping part 171 is connected to the follower wheel 174, and the second clamping part 172 is disposed opposite to the first clamping part 171. Both ends of the first elastic member 173 are connected to the first clamping part 171 and the second clamping part 172, respectively. The first clamping part 171 and the second clamping part 172 are used to clamp the battery cell. The follower wheel 174 is rolledly connected to the outer edge of the cam 12. When the follower wheel 174 encounters the limiting structure 121, the limiting structure 121 hinders the movement of the follower wheel 174, causing the first clamping part 171 to move away from the second clamping part 172, so that the second clamping member 17 is in the open state. At this time, the first elastic member 173 is in the stretched state, and the battery cell is located between the first clamping part 171 and the second clamping part 172. After the follower wheel 174 passes the limiting structure 121, the first elastic member 173 contracts with elastic force, causing the first clamping part 171 to move closer to the second clamping part 172, thereby clamping the battery cell.

[0068] The first clamping part 171 is provided with a first lever 175, and the first lever 175 is provided with a first protrusion 1751. The second clamping part 172 is provided with a second lever 176, and the second lever 176 is provided with a second protrusion 1761. The first protrusion 1751 and the second protrusion 1761 fit together so that during the movement of the first clamping part 171 relative to the second clamping part 172, the first protrusion 1751 and the second protrusion 1761 can slide together to play a guiding role.

[0069] The first clamping part 171 has a first through groove 1771 extending through its thickness, and the second clamping part 172 has a second through groove 1772 extending through its thickness. The first through groove 1771 and the second through groove 1772 are arranged opposite to each other to form a cell clamping hole 177. The cell clamping hole 177 extends from the middle to the lower part to form a gradually expanding structure, so as to facilitate the insertion of the cell into the cell clamping hole 177. Furthermore, the inner wall of the cell clamping hole 177 is also provided with an anti-slip coating to prevent the cell from falling off during clamping and transportation.

[0070] The current collector stamping and welding production line provided in this invention, by setting up a turret, multiple material handling mechanisms, multiple first clamping components, multiple second clamping components, multiple fixing components, and multiple lifting rods, can separate the current collector from the current collector cup assembly and the battery cell from the battery cell cup after the current collector and battery cell are loaded. The battery cell is then pushed into the clamping mechanism, and the material handling mechanism adsorbs the current collector and positions it above the battery cell. When the turret rotates to the welding station, the current collector can be welded to the top surface of the battery cell. One device achieves multiple uses, simplifies the structure of the current collector welding device, and reduces manufacturing costs. Each second clamping component can automatically open and close without the need for other auxiliary components to control the opening and closing of the second clamping component, simplifying the structure of the second clamping component and reducing the manufacturing cost during the production of the current collector.

[0071] like Figure 9 As shown, the gas path structure 4 includes: a first gas flow section, an extraction pipe, multiple first pipes 45, and multiple second pipes 46. The first gas flow section is located inside the turret 100. The first gas flow section has an inlet slot and an extraction slot. An inlet pipe 433 is located on the top surface of the first gas flow section, and an inlet hole and an extraction hole are annularly located on the bottom surface. The extraction pipes are connected to the extraction slots. One end of each first pipe 45 is connected to an inlet hole, and one end of each second pipe 46 is connected to an extraction hole. Each material handling mechanism is connected to one first pipe 45 and one second pipe 46.

[0072] Specifically, an injection gas machine and a negative pressure machine are installed outside the turret 100. The injection gas machine is connected to the inlet slot of the first gas flow section through the inlet pipe 433, and the negative pressure machine is connected to the extraction slot of the first gas flow section. The inlet slot and the extraction slot are two independent slots. The first pipe 45 is connected to the inlet slot through the inlet hole and is used to provide protective gas for the material handling mechanism. The second pipe 46 is connected to the extraction slot through the extraction hole and is used to extract the gas in the material handling mechanism to create a negative pressure in the material handling mechanism, and use the negative pressure to attract the collecting plate.

[0073] Furthermore, such as Figure 10 As shown, the first gas flow section includes a slip ring 41, a sealing plate 42, and an air inlet cover 43. The slip ring 41 is disposed within the first rotating part 10 and rotates synchronously with the first rotating part 10. The slip ring 41 has multiple air inlet holes arranged in a ring. The sealing plate 42 is disposed within the first rotating part 10 and located above the slip ring 41. The sealing plate 42 has a first air inlet groove 421 penetrating its thickness, and the first air inlet groove 421 is an arc-shaped groove segment. The air inlet cover 43 is disposed within the first rotating part 10 and stacked above the sealing plate 42. The surface where the air inlet cover 43 and the sealing plate 42 overlap has a second air inlet groove 431, which is opposite to the first air inlet groove 421 to form an air inlet body. The air inlet cover 43 has multiple air inlet pipes 433, which communicate with the second air inlet groove 431 and the first air inlet groove 421. When the air inlet is opposite to the first air inlet groove 421, the air inlet is connected to the air inlet groove body.

[0074] Each first pipe 45 is inserted into an air inlet, and the end face of the first pipe 45 is located inside the air inlet, or flush with the surface where the slip ring 41 and the sealing plate 42 overlap, to avoid interference between the first pipe 45 and the sealing plate 42 when the slip ring 41 rotates. The surface where the air inlet cover 43 and the sealing plate 42 overlap is provided with a second air inlet groove 431, which is opposite to the first air inlet groove 421, forming an air inlet body. In this embodiment, the arc length of the second air inlet groove 431 can be equal to or greater than that of the first air inlet groove 421. The surface of the air inlet cover 43 facing away from the sealing plate 42 is provided with multiple air inlet pipes 433, which are opposite to the first air inlet groove 421, ensuring that each air inlet pipe 433 is connected to the air inlet body. When the slip ring 41 rotates, protective gas enters the air inlet body through the gas injector and the air inlet pipe 433, and then enters the first pipe 45 connected to the air inlet body.

[0075] Furthermore, in this embodiment, the first air inlet groove 421 is an arc-shaped groove segment located at the welding station. That is, only the first pipe 45 rotated to the welding station will be connected to the gas injector, so that the material taking mechanism connected to this part of the first pipe 45 will spray out protective gas, while no protective gas will be sprayed out from the material taking mechanism outside the welding station, so as to avoid energy waste.

[0076] Meanwhile, in this embodiment of the invention, the slip ring 41 is also provided with a plurality of circumferential suction holes. The sealing plate 42 is also provided with a first suction groove 422 penetrating its thickness, the first suction groove 422 being an arc-shaped groove segment. The surface of the air inlet cover 43 overlapping the sealing plate 42 is provided with a second suction groove 432, the second suction groove 432 being opposite to the first suction groove 422 to form a suction groove body. When the suction hole is opposite to the first suction groove 422, the suction hole is connected to the suction groove body.

[0077] The slip ring 41 has not only a ring of air inlets but also a ring of air extraction holes. The air inlet groove of the first gas flow section is positioned opposite to the air inlets, and the air extraction groove of the first gas flow section is positioned opposite to the air extraction holes. In this embodiment, the air extraction groove is also an arc-shaped groove segment, that is, the air extraction groove does not form an annular groove. In other words, at a certain position, no negative pressure is formed in the second pipe 46. Specifically, when the slip ring 41 rotates, it drives the second pipe 46 to rotate. The negative pressure machine extracts the gas in the second pipe 46 opposite to the air extraction groove through the air extraction pipe, so that a negative pressure is generated in this part of the second pipe 46 to attract the collector plate. In this embodiment, after the collector plate is welded, no negative pressure is formed in the second pipe 46, that is, the arc segment of the first gas flow section after the welding station does not have an air extraction groove.

[0078] The extraction pipeline includes a main pipeline 44 and multiple branch pipelines. The main pipeline 44 is located at the center of the first gas flow section and is connected to the negative pressure machine. The first end of each branch pipeline is connected to the main pipeline 44, and the second end of each branch pipeline is connected to the extraction tank.

[0079] The manifold stamping and welding production line provided in this embodiment of the invention, by setting up a gas path structure, can spray protective gas in the material taking mechanism when the material taking mechanism is only in the welding position. After the manifold is welded, the material taking mechanism neither sprays protective gas nor performs vacuum treatment, thus avoiding energy waste and reducing production costs.

[0080] like Figure 11 and Figure 12 As shown, each material handling mechanism includes a third driver 101 and a welding head 102. The third driver 101 is disposed on the circumferential surface of the first rotating part 10. The welding head 102 is connected to the third driver 101, and the third driver 101 is used to drive the welding head 102 to move reciprocally in a longitudinal direction. The welding head 102 is provided with a first flow channel 1023 and a second flow channel 1024. The first flow channel 1023 is connected to the first pipe 45, and the second flow channel 1024 is connected to the second pipe 46.

[0081] Specifically, the third actuator 101 is connected to the housing of the welding head 102, the first pipe 45 is connected to the first flow channel 1023 of the welding head 102, and the second pipe 46 is connected to the second flow channel 1024 of the welding head 102. When the collecting plate is loaded, the third actuator 101 drives the welding head 102 downwards. The gas inside the welding head 102 is extracted through the second flow channel 1024, creating a negative pressure within the second flow channel 1024. The welding head 102 uses this negative pressure to attract the collecting plate and rotates with the first rotating part 10 to the welding station. At the welding station, protective gas is ejected through the first flow channel 1023 to provide protective gas for the welding process of the collecting plate.

[0082] like Figure 12 As shown, in this embodiment, the welding head 102 includes a second gas flow section 1021 and an adsorption section 1022. The second gas flow section 1021 is provided with a fourth through hole 10213 and a fifth through hole 10214. The fourth through hole 10213 is used to extract gas, and the fifth through hole 10214 is used to inject welding shielding gas. The adsorption section 1022 is disposed within and connected to the second gas flow section 1021. The adsorption section 1022 is provided with a first flow channel 1023 and a second flow channel 1024. The first flow channel 1023 and the second flow channel 1024 are bent flow channels, and the first flow channel 1023 and the second flow channel 1024 are not intersecting. The first flow channel 1023 communicates with the fifth through hole 10214, and the second flow channel 1024 communicates with the fourth through hole 10213.

[0083] The second pipe 46 is connected to the fourth through hole 10213 to extract gas from the second flow channel 1024, creating a negative pressure within the second flow channel 1024. The adsorption part 1022 uses this negative pressure to adsorb the collecting plate. During welding of the collecting plate, protective gas enters the first flow channel 1023 through the first pipe 45 and is ejected from the first flow channel 1023. In this embodiment, both the second flow channel 1024 and the first flow channel 1023 are bent flow channels to guide gas from the bottom surface of the adsorption part 1022, or to guide gas from the second gas flow part 1021 to the bottom or side surface of the adsorption part 1022. This ensures that during the welding process of the collecting plate, the vacuuming and the injection of protective gas flow through separate channels without interference.

[0084] Furthermore, when the size of the adsorption part 1022 is equal to or smaller than the size of the collector plate, the protective gas can be ejected from the side of the adsorption part 1022; while when the size of the adsorption part 1022 is larger than the size of the collector plate, the protective gas can also be ejected from the part of the bottom surface of the adsorption part 1022 that is not in contact with the collector plate.

[0085] The adsorption section 1022 includes a plurality of adsorbents 10221, each of which is connected to the second gas flow section 1021. Each adsorbent 10221 is provided with a second flow channel 1024 and a first flow channel 1023. Each adsorbent 10221 is provided with a fourth through hole 10213 and a fifth through hole 10214.

[0086] Specifically, in this embodiment, the multiple adsorbents 10221 can be arranged in various ways. The multiple adsorbents 10221 can be arranged in parallel. In this case, both ends of each adsorbent 10221 are connected to the second gas flow section 1021. Each adsorbent 10221 has a second flow channel 1024 and a first flow channel 1023. When adsorbing the collector plate, the multiple adsorbents 10221 work together to adsorb the collector plate. During the welding of the collector plate, the multiple adsorbents 10221 all spray protective gas.

[0087] Multiple adsorbents 10221 can also be arranged radially. In this case, the first ends of the multiple adsorbents 10221 are connected to each other, and the second end of each adsorbent 10221 is connected to the second gas flow section 1021. The number of fourth through holes 10213 and fifth through holes 10214 on the second gas flow section 1021 matches the number of adsorbents 10221, so that each adsorbent 10221 has the function of vacuuming and gas injection. During adsorption on the manifold, multiple adsorbents 10221 jointly adsorb the manifold, and during welding of the manifold, multiple adsorbents 10221 jointly spray protective gas.

[0088] like Figure 13 As shown, the first flow channel 1023 penetrates the bottom surface of the adsorbent 10221. Each adsorbent 10221 has multiple sixth through holes on its side, which are connected to the first flow channel 1023 to form an air blowing hole 10231. Since the adsorbent 1022 adsorbs the collecting plate, the collecting plate blocks the end of the first flow channel 1023, preventing the protective gas from flowing out from the end of the first flow channel 1023. Therefore, multiple sixth through holes are provided on the side of each adsorbent 10221, and each sixth through hole is connected to the first flow channel 1023 so that the protective gas can be ejected from the sixth through hole.

[0089] The second flow channel 1024 penetrates the bottom surface of the adsorbent 10221, forming multiple vacuum holes on the bottom surface of the adsorbent 10221. Furthermore, the number of vacuum holes can be multiple, so that the adsorbent part 1022 has a large adsorption force, thereby firmly adsorbing the collector plate.

[0090] The outer surface of the second gas flow section 1021 is provided with a first annular groove 10211 and a second annular groove 10212. The bottom of the first annular groove 10211 is provided with a plurality of fourth through holes 10213, and the bottom of the second annular groove 10212 is provided with a plurality of fifth through holes 10214. A housing is sleeved on the outside of the second gas flow section 1021. The housing is provided with a seventh through hole and an eighth through hole. The seventh through hole communicates with the first annular groove 10211, and the eighth through hole communicates with the second annular groove 10212.

[0091] The seventh through hole is connected to the second pipe 46, and the eighth through hole is connected to the first pipe 45. Gas in the second flow channel 1024 of each adsorbent 10221 is drawn into the first annular groove 10211, and then extracted through the second pipe 46, creating a negative pressure within each adsorbent 10221. Protective gas enters the second annular groove 10212 through the first pipe 45, and then enters the corresponding first flow channel 1023 through each fifth through hole 10214. It is then ejected from the blowing holes 10231 on the side of each adsorbent 10221 to provide protective gas for the welding process.

[0092] The manifold stamping and welding production line provided in this embodiment of the invention sets the first and second flow channels in the welding head as bent flow channels, and the two are not intersected. During the welding of the manifold, the vacuuming and air blowing are carried out in separate flow channels, and the two do not interfere with each other, thus ensuring the welding effect.

[0093] like Figure 1 As shown, the turret-based current collector welding device also includes a transfer plate 8 and a sorting device 5. The transfer plate 8 rotates synchronously with the turret 100. The welded battery cell follows the turret 100 to the transfer plate 8 and is then transferred by the transfer plate 8 to the sorting device 5. The sorting device 5 is used to inspect the quality of the battery cell to remove defective products.

[0094] like Figure 14 As shown, the sorting device 5 includes: a detection mechanism 51, a second sorting mechanism 54, a non-conforming product conveyor line 55, a third sorting mechanism 56, and a conforming product conveyor line 58. The detection mechanism 51, the second sorting mechanism 54, and the third sorting mechanism 56 rotate synchronously, and the non-conforming product conveyor line 55 and the conforming product conveyor line 58 are both connected to the detection mechanism 51.

[0095] The inspection mechanism 51 includes multiple inspection positions and multiple inspection probes 511, arranged in a ring. Each inspection position is equipped with a corresponding inspection probe 511. The inspection positions are used to accommodate battery cells, and the inspection probes 511 are used to inspect the quality of the battery cells. The second sorting mechanism 54 is used to sort out unqualified battery cells. The second sorting mechanism 54 includes a drive assembly and multiple third clamping members 543, arranged in a ring. The drive assembly is electrically connected to the inspection probes 511. After receiving a signal from the inspection probes 511, the drive assembly drives the third clamping members 543 to clamp the battery cells. The third clamping members 543 are used to clamp the battery cells onto the unqualified product conveyor line 55. The third sorting mechanism 56 is used to transfer qualified battery cells from the inspection mechanism 51 to the qualified product conveyor line 58.

[0096] Specifically, in this embodiment, the detection mechanism 51, the second sorting mechanism 54, and the third sorting mechanism 56 rotate synchronously. The detection mechanism 51 is equipped with a first gear, the second sorting mechanism 54 is equipped with a second gear, and the third sorting mechanism 56 is equipped with a third gear. The first gear meshes with the second gear, and simultaneously, the first gear also meshes with the third gear. When the first gear rotates, it synchronously drives the second and third gears to rotate together. Furthermore, along the rotation direction, the second sorting mechanism 54 is located upstream of the third sorting mechanism 56; that is, the battery cells on the detection mechanism 51 first pass through the second sorting mechanism 54 and then through the third sorting mechanism 56. Specifically, when the detection mechanism 51 rotates, the second sorting mechanism 54 and the third sorting mechanism 56 rotate synchronously. The welded battery cells enter the detection position in sequence. The detection probe 511 detects the quality of the battery cells. If the quality of the battery cell is qualified, the detection probe 511 does not send a signal to the drive assembly, and the drive assembly does not operate. If the quality of the battery cell is unqualified, the detection probe 511 sends a signal to the drive assembly, and the drive assembly drives the third clamping member 543 at the drive assembly to open. The third clamping member 543 clamps the unqualified battery cell onto the unqualified product conveyor line 55. When the qualified battery cell continues to rotate with the detection mechanism 51 to the third sorting mechanism 56, the third sorting mechanism 56 clamps and transfers the qualified battery cell onto the qualified product conveyor line 58.

[0097] Optionally, in one embodiment of the present invention, the detection probe 511 is used to detect whether the battery cell has a short circuit, and thereby determine whether the battery cell is of acceptable quality. Specifically, the detection probe 511 includes a positive probe and a negative probe, which are respectively connected to both ends of the battery cell to determine whether the battery cell has a short circuit. If the voltage of the battery cell is 0, it indicates that the battery cell is short-circuited, and the battery cell is determined to be a defective product; if the voltage of the battery cell is not 0, it indicates that the battery cell does not have a short circuit, and the battery cell is determined to be a qualified product.

[0098] Alternatively, in another embodiment of the present invention, the detection probe 511 may also be a visual inspection probe, which uses visual inspection to determine whether the quality of the battery cell is qualified.

[0099] In one embodiment of the present invention, the rotation speed of the detection mechanism 51 is a constant value, and the battery cell enters the detection position at a fixed position. That is, the distance between the detection position and the drive component is also a constant value. The time it takes for the unqualified battery cell to rotate to the drive component can be calculated. After receiving the signal, the drive component delays the operation for this time, which ensures that when the unqualified battery cell rotates to the drive component, the third clamping member 543 opens to clamp the unqualified battery cell.

[0100] In another embodiment of the present invention, a sensing block may be provided on the drive assembly, and a sensor is provided at each detection position. When the detection mechanism 51 rotates, when the sensor senses the sensing block, the detection probe 511 sends a signal, and the drive assembly drives the third clamping member 543, which has rotated to this position, to perform an action to clamp the unqualified battery cell.

[0101] It is understandable that the above are only two ways to achieve the cooperation between the detection probe 511 and the third clamping member 543 to clamp the unqualified battery cell, and the implementation form can also be other forms.

[0102] like Figure 14 As shown, the testing mechanism 51 also includes: a fourth turntable, multiple fourth clamping members 52, and a carrier plate 53. Each fourth clamping member 52 is disposed at a testing position and is connected to the fourth turntable. The carrier plate 53 is disposed below the fourth turntable and is connected to the non-conforming product conveyor line 55 and the conforming product conveyor line 58.

[0103] Specifically, in this embodiment, the carrier plate 53 remains stationary, while the fourth turntable rotates synchronously with the transfer plate 8. The fourth turntable drives each of the fourth clamping members 52 to rotate. When the fourth clamping member 52 rotates to the transfer plate 8, it clamps the battery cell. In this embodiment, the fourth clamping member 52 does not have an opening and closing function, therefore it cannot firmly clamp the battery cell. The fourth clamping member 52 is only used to position the battery cell and prevent it from being thrown out during the rotation of the fourth turntable. After the fourth clamping member 52 clamps the battery cell, the battery cell is placed on the carrier plate 53, and the detection probe 511 located at this detection position detects the quality of the battery cell.

[0104] Both the defective product conveyor line 55 and the qualified product conveyor line 58 have an arc-shaped conveying section connected to the edge of the carrier plate 53, so that the defective battery cells are conveyed to the defective product conveyor line 55 under the action of the third clamping member 543, and the qualified battery cells are conveyed to the qualified product conveyor line 58 under the action of the third sorting mechanism 56.

[0105] like Figure 15As shown, in an embodiment of the present invention, the second sorting mechanism 54 includes a third turntable 546, and a plurality of third clamping members 543 are arranged in a ring along the circumferential direction of the third turntable 546. When the third turntable 546 rotates, it can drive the plurality of third clamping members 543 to rotate together.

[0106] like Figure 15 and Figure 16 As shown, the driving assembly includes a second driver 545, a first limiting plate 541, and a second limiting plate 542. The second driver 545 is electrically connected to the detection probe 511. The first limiting plate 541 is disposed at the center of the third turntable 546. One end of each third clamping member 543 is rolledly connected to the edge of the first limiting plate 541. The second limiting plate 542 is slidably connected to the first limiting plate 541 and is also connected to the second driver 545. The second limiting plate 542 has a switchable first position and a second position. When the second limiting plate 542 is in the first position, it blocks the rolling movement of the third clamping members 543, and the portion of the third clamping members 543 blocked by the second limiting plate 542 is in an open state. When the second limiting plate 542 is in the second position, the third clamping members 543 are rolledly connected to the outer edges of the first limiting plate 541 and the second limiting plate 542, and are in a closed state.

[0107] Specifically, the detection probe 511 and the second driver 545 can be connected via wires or wirelessly. The second driver 545 drives the second limiting plate 542 to slide relative to the first limiting plate 541. When the third turntable 546 rotates, the first limiting plate 541 and the second limiting plate 542 do not rotate with the third turntable 546. When a portion of the second limiting plate 542 slides outside the first limiting plate 541, the second limiting plate 542 is in a first position; when the second limiting plate 542 overlaps with the first limiting plate 541, the second limiting plate 542 is in a second position. When the second limiting plate 542 is in the first position, when the third clamping member 543 rotates to the position of the second limiting plate 542, the second limiting plate 542 blocks the rolling movement of the third clamping member 543, causing the third clamping member 543 to be in an open state, with the corresponding battery cell located inside the third clamping member 543. Then, the second driver 545 drives the second limiting plate 542 to the second position, and the third clamping member 543 closes to clamp the battery cell.

[0108] Furthermore, the surface of the first limiting plate 541 is provided with a second sliding groove 5411, and the second limiting plate 542 is embedded in the second sliding groove 5411. Under the action of the second driver 545, the second limiting plate 542 can slide along the second sliding groove 5411. The first limiting plate 541 has a first outer edge 5413, and the second limiting plate 542 has a second outer edge 5421, the shape of which matches that of the first outer edge 5413. When the second limiting plate 542 is in the first position, the second outer edge 5421 is offset from the first outer edge 5413 to block the rolling movement of the third clamping member 543. When the second limiting plate 542 is in the second position, the second outer edge 5421 coincides with the first outer edge 5413, and the third clamping member 543 is in a rolling connection with the first outer edge 5413 and the second outer edge 5421.

[0109] Specifically, under the action of the second actuator 545, the second limiting plate 542 can slide along the second slide groove 5411. The second outer edge 5421 of the second limiting plate 542 and the first outer edge 5413 of the first limiting plate 541 are matched in shape. When the second limiting plate 542 is not sliding relative to the first limiting plate 541, the second outer edge 5421 coincides with the first outer edge 5413, and the third clamping member 543 can roll along both. When the second limiting plate 542 slides relative to the first limiting plate 541, the second outer edge 5421 extends beyond the first outer edge 5413, and the second outer edge 5421 acts as a barrier to the rolling movement of the third clamping member 543, causing the third clamping member 543 to open. When the second outer edge 5421 coincides with the first outer edge 5413, the second limiting plate 542 no longer acts as a barrier to the rolling movement of the third clamping member 543. At this time, the third clamping member 543 is in a closed state to clamp the battery cell.

[0110] like Figure 17 As shown, the first outer edge 5413 is provided with a third protrusion 5412. When the third clamping member 543 abuts against the third protrusion 5412, the third clamping member 543 is in an open state to release the battery cell onto the defective product conveyor line 55. After the third clamping member 543 passes the third protrusion 5412, the third clamping member 543 is in a closed state.

[0111] Specifically, in this embodiment, when the second limiting plate 542 is in the first position, along the rotation direction of the third turntable 546, the starting point of the second outer edge 5421 forms the first limiting point of the third clamping member 543, causing the third clamping member 543 to open. When the second limiting plate 542 is in the second position, the third protrusion 5412 forms the second limiting point of the third clamping member 543, causing the third clamping member 543 to open again at this point. When the third clamping member 543 clamps the battery cell and rotates to this point, the third protrusion 5412 blocks the rolling movement of the third clamping member 543, causing the third clamping member 543 to open again, and the battery cell falls onto the defective product conveyor line 55 and is conveyed by the defective product conveyor line 55.

[0112] Furthermore, in this embodiment, the defective product conveying line 55 has an arc-shaped conveying section that surrounds the third turntable 546, and the extension direction of the arc-shaped conveying section exceeds the third protrusion 5412, so that when the third clamping member 543 abuts against the third protrusion 5412, it can place the battery cell on the arc-shaped conveying section. After the third clamping member 543 passes the third protrusion 5412, the third clamping member 543 is in a closed state again and continues to rotate with the third turntable 546.

[0113] When the detection probe 511 does not detect a defective cell, the second driver 545 does not operate. The second outer edge 5421 of the second limiting plate 542 coincides with the first outer edge 5413 of the first limiting plate 541. The third clamping member 543 is only in the open state when it abuts against the third protrusion 5412. At this time, there is no cell inside the third clamping member 543. When the detection probe 511 detects a defective cell, it sends a signal to the second driver 545. After a preset time, the second driver 545 drives the second limiting plate 542 to slide, thereby causing the third clamping member 543, which has moved to this position, to open. At this time, the defective cell is exactly opposite the open third clamping member 543. After the cell is inside the third clamping member 543, the second driver 545 drives the second limiting plate 542 to slide in the opposite direction, and the third clamping member 543 automatically closes, thereby clamping the cell.

[0114] like Figure 16 As shown, in an embodiment of the present invention, the driving assembly further includes a first connecting plate 544, the two ends of which are respectively connected to a second driver 545 and a second limiting plate 542. The second driver 545 drives the first connecting plate 544 to slide the second limiting plate 542. Optionally, in an embodiment of the present invention, the second driver 545 can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder, etc.

[0115] It should be noted that in this embodiment, the structure of the third clamping member 543 is the same as that of the second clamping member 17, so it will not be described again. When the third clamping member 543 rotates with the third turntable 546 to the third protrusion 5412, the principle of the third clamping member 543 being in the open and closed state is the same as the principle described above. Correspondingly, after the current collector is welded, the second clamping member 17 clamps the battery cell and rotates with the turret 100, and its principle of releasing the battery cell is also the same as the principle described above.

[0116] like Figure 14 As shown, in an embodiment of the present invention, the fourth clamping member 52 includes a pair of third clamping parts, which are arranged in parallel. The first end of each third clamping part is connected to the fourth turntable, and the second end of each third clamping part is provided with an arc-shaped groove for accommodating the battery cell.

[0117] Specifically, the battery cell is located within an arc-shaped groove, and there is a certain gap between the pair of third clamping parts, which is greater than the thickness of the third clamping member 543. When the second limiting plate 542 is in the second position, the third clamping member 543 rotates with the third turntable 546, and the battery cell rotates with the second turntable. When the second limiting plate 542 is in the first position, a portion of the third clamping member 543 extends between the pair of third clamping parts, and the battery cell is located within the third clamping member 543. When the second limiting plate 542 switches from the first position to the second position, the third clamping member 543 closes, clamping the battery cell. Simultaneously, the third clamping member 543 rotates with the third turntable 546, rotating to the outside of the fourth clamping member 52, thereby clamping the battery cell away from within the fourth clamping member 52.

[0118] like Figure 14 As shown, in an embodiment of the present invention, the third sorting mechanism 56 includes a third turntable and a plurality of fifth clamping members 57. The third turntable rotates synchronously with the detection mechanism, and the plurality of fifth clamping members 57 are arranged in a ring along the circumference of the third turntable. The fifth clamping members 57 are used to transfer qualified battery cells to the qualified product conveyor line 58.

[0119] Specifically, after being detected by the detection probe 511, qualified battery cells are rotated to the third sorting mechanism 56 by the fifth turntable. The fifth clamping member 57 fixes the battery cell and, driven by the fifth turntable, transfers the battery cell to the qualified product conveyor line 58. Furthermore, in this embodiment, the structure of the fifth clamping member 57 is the same as that of the fourth clamping member 52, so it will not be described again here.

[0120] It should be noted that in the embodiments of the present invention, the first clamping member 16, the fixing member 18, the fourth clamping member 52 and the fifth clamping member 57 have the same structure; the second clamping member 17 and the third clamping member 543 have the same structure.

[0121] like Figure 14As shown, the qualified product conveyor line 58 also has an arc-shaped conveyor section, which is arranged around the outer edge of the fifth turntable and connected to the carrier plate 53. After the fifth clamping member 57 fixes the battery cell, it transfers the battery cell to the arc-shaped conveyor section of the qualified product conveyor line 58 as the fifth turntable rotates.

[0122] The turret-based current collector welding device provided in this embodiment of the invention can detect the quality of battery cells by setting up a sorting device, and can separate and transfer unqualified battery cells from qualified battery cells. It does not require a special sorting plate, which reduces the volume of the battery cell sorting device, shortens the battery cell transport route, and improves the transport efficiency after detection.

[0123] The sump stamping and welding production line provided in this embodiment of the invention, except for the sump feeding, uses a turntable for material transfer. Compared with the use of a conveyor belt, the turntable material transfer structure is more compact and the transfer efficiency is higher, which effectively improves production efficiency.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A manifold stamping and welding production line, characterized in that, include: The equipment includes a stamping device, a first feeding device, a second feeding device, a welding device, and a sorting device. The stamping device is used to punch the collector plate, feed the collector plate onto the collector plate cup assembly, and sort the collector plates. The first feeding device is used to feed the sorted qualified collectors to the welding device; The second feeding device is used to feed the battery cells into the welding device; The welding device is used to weld the current collector to the top surface of the battery cell; The sorting device is used to sort the welded battery cells to remove defective products; The stamping device further includes a pitch-changing mechanism and a first sorting mechanism. The pitch-changing mechanism is used to adjust the pitch of the collecting plate, and the first sorting mechanism is used to sort the collecting plate to remove defective products. The welding device includes: a turret, multiple material handling mechanisms, and multiple first clamping components; The turret includes a first rotating part and a second rotating part, and the first rotating part and the second rotating part rotate synchronously. The first rotating part is provided with an air passage structure, and a plurality of material picking mechanisms are arranged in a ring on the outer wall of the first rotating part. The plurality of material picking mechanisms are connected to the air passage structure. The material picking mechanism is used to pick up the collecting plate and spray protective gas during the welding of the collecting plate. Multiple first clamping members are arranged in a ring on the outer wall of the second rotating part, and each first clamping member is located below one of the material picking mechanisms. The first clamping members are used to clamp the collecting plate cup assembly. The welding device further includes: multiple second clamping parts, multiple fixing parts, multiple lifting rods and a base; the turret further includes a third rotating part, which rotates synchronously with the second rotating part. A plurality of second clamping members are arranged in a ring on the outer wall of the second rotating part, and the second clamping members are used to clamp the battery cell; Multiple fixing members are arranged in a ring on the outer wall of the third rotating part, and the fixing members are used to fix the battery cell holder. Each of the lifting rods extends into the corresponding cell cup. The circumferential surface of the base is provided with a first sliding groove. The first sliding groove spirals upward along the rotation direction of the third rotating part. When the lifting rod is at the high position of the first sliding groove, the lifting rod can push the cell from the cell cup into the second clamping member, where it is clamped by the second clamping member. Each material handling mechanism is provided with a first clamping member, a second clamping member, a fixing member, and a lifting rod.

2. The manifold stamping and welding production line according to claim 1, characterized in that, The stamping device includes a stamping mechanism for forming a manifold, and the stamping mechanism includes: a die, an eccentric cam, and a first driver; The top surface of the mold is provided with a first through hole, and the mold is provided with a material strip groove and a protrusion. The protrusion, the material strip groove and the first through hole are arranged opposite to each other. The first driver is used to drive the eccentric cam to rotate. When the eccentric cam rotates, it can drive the mold to open and close. When the mold is in the closed state, the protrusion presses the material strip to form the collector plate.

3. The manifold stamping and welding production line according to claim 1, characterized in that, The first feeding device includes: a first toothed disc and a second toothed disc; The first toothed disc rotates synchronously with the welding device. The first toothed disc is provided with a plurality of notches in a ring shape. The shape of the notches matches the shape of the collector cup assembly. The notches are used to engage with the collector cup assembly. The first toothed disc is used to transfer the collector cup assembly to the welding device. The second toothed disc rotates synchronously with the welding device. Along the rotation direction of the welding device, the second toothed disc is located downstream of the first toothed disc. The second toothed disc is provided with a plurality of notches in a ring shape. The second toothed disc is used to transfer the empty collector cup assembly.

4. The manifold stamping and welding production line according to claim 3, characterized in that, The notch is provided with a first magnetic element, and the collector cup assembly is provided with a second magnetic element. The first magnetic element and the second magnetic element are disposed at the engagement point between the notch and the collector cup assembly. The welding device is equipped with a third magnetic component, which uses magnetic attraction to attract the collector cup assembly to the welding device. The second toothed disk is provided with a fourth magnetic element, which uses magnetic attraction to attract the empty collector cup assembly to the second toothed disk.

5. The manifold stamping and welding production line according to claim 1, characterized in that, The gas path structure includes: a first gas flow section, an extraction pipe, multiple first pipes, and multiple second pipes; The first gas flow section is disposed inside the turret. The first gas flow section is provided with an inlet slot and an exhaust slot. The top surface of the first gas flow section is provided with an inlet pipe, and the bottom surface of the first gas flow section is provided with an inlet hole and an exhaust hole in a ring. The air extraction pipe is connected to the air extraction tank. The first end of each first pipe is connected to an air inlet. The first end of each second pipe is connected to an air extraction hole. The second end of each first pipe and the second end of each second pipe are connected to a material handling mechanism.

6. The manifold stamping and welding production line according to claim 1, characterized in that, The sorting device includes: a detection mechanism, a second sorting mechanism, a non-conforming product conveying line, a third sorting mechanism, and a conforming product conveying line. The detection mechanism, the second sorting mechanism, and the third sorting mechanism rotate synchronously. The non-conforming product conveying line and the conforming product conveying line are both connected to the detection mechanism. The testing mechanism includes multiple testing positions and multiple testing probes. The multiple testing positions are arranged in a ring, and each testing position is equipped with a corresponding testing probe. The testing positions are used to accommodate battery cells, and the testing probes are used to test the quality of the battery cells. The second sorting mechanism is used to sort out unqualified battery cells. The second sorting mechanism includes a drive assembly and a plurality of third clamping members arranged in a ring. The drive assembly is electrically connected to the detection probe. The drive assembly is used to drive the third clamping members to clamp the battery cells after receiving a signal from the detection probe. The third clamping members are used to clamp the battery cells onto the unqualified product conveying line. The third sorting mechanism is used to transfer qualified battery cells from the testing mechanism to the qualified product conveying line.

7. The manifold stamping and welding production line according to claim 6, characterized in that, The driving component includes: a second driver, a first limiting plate, and a second limiting plate; The second driver is electrically connected to the detection probe, and one end of each of the third clamping members is rotatably connected to the first limiting plate; the second limiting plate is slidably connected to the first limiting plate, and the second limiting plate is also connected to the second driver; The second limiting plate has a switchable first position and a second position. When the second limiting plate is in the first position, the second limiting plate blocks the rolling movement of the third clamping member, and the third clamping member blocked by the second limiting plate is in an open state. When the second limiting plate is in the second position, the third clamping member is in a rolling connection with the outer edges of the first limiting plate and the second limiting plate, and the third clamping member is in a closed state.

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