Tab cutting and compounding equipment and compounding method

Abstract

The embodiment of the invention provides pole lug cutting equipment and a compounding method, and relates to the technical field of pole lug and pole piece compounding equipment.The pole lug cutting and compounding equipment comprises an unwinding device, a cutting device and a cutting device, the shaping device is arranged on one side of the unwinding roller, and the shaping device is used for flattening the tab material belt; the cutting device comprises a cutting mechanism, and the cutting mechanism is used for cutting the tab material belt to obtain the tab; the pretreatment device is used for pretreating the surfaces of the tabs so as to increase the surface roughness of the tabs; and the conveying assembly is used for conveying the tab material belt or the tab. According to the embodiment of the invention, the connection reliability of the tab and the pole piece can be ensured. Besides, the tabs and the pole pieces are connected in a composite mode, burrs can be avoided, damage to the pole pieces can be reduced, and therefore the reliability and safety of the battery cell are improved.

Description

Technical Field

[0001] The present application relates to the technical field of tab and pole sheet composite equipment, and in particular to a tab cutting and composite equipment and a composite method. Background Art

[0002] In the related art, the pole tab and the pole piece are connected by welding. However, this connection method is not firm, and burrs are easily generated during the welding process, which will damage the pole tab and the pole piece, thereby affecting the safety and reliability of the battery. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a tab cutting device and a composite method to improve the reliability of the connection between the tab and the pole piece.

[0004] In one aspect, an embodiment of the present application provides a tab cutting composite device, comprising:

[0005] An unwinding device, comprising an unwinding roller, wherein the unwinding roller is used to wind up the tab material strip;

[0006] A shaping device, disposed on one side of the unwinding roller, and used for flattening the tab material strip;

[0007] A cutting device, comprising a cutting mechanism, wherein the cutting mechanism is used to cut the tab material strip to obtain a tab;

[0008] A pretreatment device, used for pretreatment of the surface of the pole lug to increase the surface roughness of the pole lug;

[0009] A conveying assembly is used to transfer the tab material strip or the tab.

[0010] Furthermore, a first roller is provided on one side of the cutting mechanism, the first roller is higher than the cutting surface of the cutting mechanism, and the first roller is used to lift the pole ear after cutting.

[0011] Furthermore, the shaping device includes two rows of rolling assemblies spaced apart in an upper and lower manner, and the two rows of rolling assemblies are interference fit, wherein each row of the rolling assemblies includes a plurality of second rollers spaced apart, and each of the second rollers is staggered with respect to each other in the conveying direction of the tab material strip.

[0012] Furthermore, the pretreatment device comprises an ultrasonic welding module or a laser welding module, and the ultrasonic welding module or the laser welding module performs surface treatment on the pole lug to increase the surface roughness of the pole lug.

[0013] Furthermore, the unwinding device comprises a plurality of guide rollers, and the plurality of guide rollers are arranged at intervals on one side of the unwinding roller, and each of the guide rollers is provided with a groove matching the tab material strip.

[0014] Furthermore, the conveying assembly includes a tab clamping and transferring mechanism, which is disposed between the shaping device and the cutting device, and is used to drive the tab material strip to move.

[0015] Furthermore, the pole lug clamping and transferring mechanism comprises a guiding part and a pole lug clamping part, the guiding part is provided with a first channel for the pole lug material strip to pass through, the pole lug clamping part clamps the pole lug material strip and drives the pole lug material strip to move forward, wherein the movable space of the guiding part corresponding to the pole lug clamping part is set as a hollow structure.

[0016] Furthermore, it also includes a first burr processing device, which is arranged on a side of the cutting device away from the unwinding device, and is used to process burrs on the tab.

[0017] Furthermore, it also includes a glue coating device, which is arranged on one side of the pretreatment device and is used to coat the tab with glue.

[0018] Furthermore, it also includes a resistance detection device, which is arranged between the shaping device and the cutting device, and is used to detect whether the glue-applied part in the tab material strip is conductive with the tab.

[0019] Another aspect of the present application provides a tab cutting and compounding method, comprising the following steps:

[0020] The unwinding device unwinds the lug strip, so that the lug strip is guided through multiple guiding rollers in sequence;

[0021] Shaping the tab material strip so that the tab material strip is flattened;

[0022] The flattened tab material strip is transferred to a cutting device to cut the tab material strip to obtain tabs;

[0023] Processing the burrs of the tab;

[0024] Performing composite pretreatment on the tab to increase the surface roughness of the tab;

[0025] Glue is applied to the surface of the pole ear, and the glue-coated pole ear is adhered to the pole piece.

[0026] It can be seen from the above technical solutions that the embodiments of the present application have at least the following beneficial effects:

[0027] In the tab cutting and compounding equipment and compounding method provided in the embodiments of the present application, before the tab material strip is cut, the tab material strip is flattened by using a shaping device, which can increase the contact area between the tab and the pole piece, thereby increasing the connection reliability between the tab and the pole piece. At the same time, the surface roughness of the tab is increased by using a pretreatment device, thereby improving the bonding effect when the tab and the pole piece are compounded, thereby improving the connection reliability between the tab and the pole piece. In addition, the tab and the pole piece are connected by gluing and compounding, which can avoid the generation of burrs, thereby avoiding the situation where the burrs damage the pole piece, and can improve the safety and reliability of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A schematic diagram of the front view of the structure of a tab cutting composite device provided in one embodiment of the present application;

[0030] Figure 2 A schematic structural diagram of a tab cutting composite device from another perspective provided in one embodiment of the present application;

[0031] Figure 3 A schematic structural diagram of a tab cutting composite device from another perspective provided in one embodiment of the present application;

[0032] Figure 4 A schematic front view of the structure of a tab cutting composite device provided in another embodiment of the present application;

[0033] Figure 5 A schematic structural diagram of a tab cutting composite device from another perspective provided in one embodiment of the present application;

[0034] Figure 6 for Figure 2 A schematic diagram of the partially enlarged structure of part A;

[0035] Figure 7 for Figure 2 A schematic diagram of the partial enlarged mechanism of part B in the middle;

[0036] Figure 8 A schematic diagram of the process of a tab cutting and compounding method according to an embodiment of the present application.

[0037] Reference numerals:

[0038] 1. Earpiece;

[0039] 110, unwinding roller; 121, first guide roller; 122, second guide roller; 123, third guide roller; 130, scale; 140, tension roller; 150, supporting roller; 161, first groove sensor; 162, second groove sensor; 163, third groove sensor;

[0040] 200, shaping device; 211, second roller;

[0041] 300. Resistance detection device;

[0042] 400, clamping and transferring mechanism for pole lugs;

[0043] 500, cutting device; 510, first roller;

[0044] 610, first clamping part; 611, first air claw; 612, vertical transfer cylinder; 613, linear module; 620, second clamping part; 621, second air claw; 622, second drive module; 630, third clamping part; 631, third drive cylinder; 632, fourth drive cylinder; 633, third air claw; 640, fourth clamping part; 641, sixth drive cylinder; 642, seventh drive cylinder; 643, fourth air claw;

[0045] 700, a first burr treatment device;

[0046] 800, pre-treatment device;

[0047] 900, composite device;

[0048] 1000. Gluing device. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] The process of combining the pole tab 1 and the pole piece is the process of tightly combining the pole tab 1 and the pole piece. The good combination of the pole tab 1 and the pole piece can ensure that the current inside the battery can be efficiently conducted. However, in the existing pole tab and pole piece composite equipment, the pole tab 1 and the pole piece are connected by welding. However, this connection method is not firm, and burrs are easily generated during the welding process, which will damage the pole tab 1 and the pole piece, thereby affecting the safety and reliability of the battery.

[0051] In view of this, one embodiment of the present application provides a tab cutting composite device to effectively improve the reliability of the connection between the tab and the pole piece.

[0052] See also Figures 1 to 6 As shown, one embodiment of the present application discloses a tab cutting composite device, including: an unwinding device, a shaping device 200, a cutting device 500, a pre-treatment device 800 and a conveying component.

[0053] Specifically, the unwinding device includes an unwinding roller 110, which is used to wind the pole tab material strip; the shaping device 200 is arranged on one side of the unwinding roller 110, and the shaping device 200 is used to flatten the pole tab material strip; the cutting device 500 includes a cutting mechanism, and the cutting mechanism is used to cut the pole tab material strip to obtain the pole tab 1; the pretreatment device 800 is used to pretreat the surface of the pole tab 1 to increase the surface roughness of the pole tab 1; the conveying component is used to transfer the pole tab material strip or the pole tab 1.

[0054] In the tab cutting and compounding equipment of the embodiment of the present application, before the tab material strip is cut, the tab material strip is flattened by using the shaping device 200, which can increase the contact area between the tab 1 and the pole piece, thereby increasing the connection reliability between the tab 1 and the pole piece. At the same time, the surface roughness of the tab is increased by using the pretreatment device 800, so as to improve the bonding effect when the tab 1 and the pole piece are compounded, thereby improving the connection reliability between the tab 1 and the pole piece. At the same time, the tab 1 and the pole piece are connected by gluing and compounding, which can avoid the generation of burrs, thereby avoiding the situation where the burrs damage the pole piece, and can improve the safety and reliability of the battery cell.

[0055] In one embodiment of the present application, see Figure 1 and Figure 2 The unwinding device includes an unwinding roller 110 and a plurality of guiding rollers. The unwinding roller 110 is used to wind the tab material strip. The plurality of guiding rollers are arranged at intervals, and each guiding roller is provided with a groove matching the tab material strip. The unwinding roller 110 is wound with the tab material strip, and the unwinding end of the tab material strip is wound on the grooves of the plurality of guiding rollers in sequence. The tab material strip can be straightened when passing through the groove, which can reduce the situation where the tab and the pole sheet are bonded due to warping or winding, resulting in a decrease in the bonding accuracy. It is worth understanding that the width of the groove is adapted to the width of the tab material strip.

[0056] In this embodiment, see Figure 1 and Figure 2 The guiding rollers include a first guiding roller 121, a second guiding roller 122 and a third guiding roller 123. The first guiding roller 121, the second guiding roller 122 and the third guiding roller 123 all have grooves matching the pole lug material strips, and the pole lug material strips are wound in the grooves of the first guiding roller 121, the second guiding roller 122 and the third guiding roller 123 in sequence.

[0057] See also Figure 2 and Figure 6 The shaping device 200 is arranged on one side of the guiding roller, and the shaping device 200 is used to flatten the tab material strip.

[0058] The cutting device 500 includes a guiding clamp and a cutting mechanism. The guiding clamp is arranged on one side of the cutting mechanism. The guiding clamp is used to guide the tab material strip before cutting. The cutting mechanism is used to cut the tab material strip to obtain the tab 1.

[0059] See also Figure 1 and Figure 2 The pretreatment device 800 is used to pretreatment the surface of the pole tab 1 to increase the surface roughness of the pole tab 1. In this way, it can prevent the situation that the pole tab 1 cannot be adhered to the pole piece after being coated with glue.

[0060] The conveyor assembly is used to transfer the tab material strip or the tab 1. Specifically, the conveyor assembly is used to drive the tab material roll to move, so that the tab material strip is transferred between the unwinding device, the shaping device 200 and the cutting device 500; at the same time, the conveyor assembly is also used to transfer the tab 1 cut by the cutting device 500 to the working position of the pre-processing device 800 and other devices to complete various processing and compounding work of the tab 1.

[0061] In some embodiments of the present application, the tab cutting and compounding equipment includes a first burr processing device 700, which is arranged on the side of the cutting device 500 away from the unwinding device, and is used to process the burrs of the tab 1 to prevent the burrs from scratching the pole piece. In addition, the burrs of the tab 1 will change the preset position of the tab 1 on the pole piece, so that by processing the burrs in the tab 1, the compounding accuracy of the tab 1 and the pole piece can also be improved, thereby improving the quality of the battery cell.

[0062] In the embodiment of the present application, after the pole lug 1 is cut, the first burr processing device 700 can be used to remove the burrs on the pole lug 1 to prevent the burrs from scratching the pole piece; at the same time, before the pole lug 1 is compounded with the pole piece, the pretreatment device 800 can be used to increase the surface roughness of the pole lug 1, so as to improve the bonding effect when the pole lug 1 and the pole piece are compounded.

[0063] In one embodiment of the present application, the first burr treatment device 700 includes cylinders spaced apart from each other, and the output ends of the two cylinders can abut against each other. When treating burrs, the pole ear 1 is moved between the two cylinders, and the upper and lower cylinders are driven to move, and the upper and lower surfaces of the pole ear 1 are respectively patted to make the burrs flush with the upper and lower surfaces of the pole ear 1. In this way, the fit between the pole ear 1 and the pole piece can be improved, and the situation where the burrs scratch the pole piece can also be reduced.

[0064] In some embodiments of the present application, see Figure 2 and Figure 7A first roller 510 is provided on one side of the cutting mechanism, and the first roller 510 is higher than the cutting surface of the cutting mechanism. The first roller 510 is used to lift the cut tab 1. In this way, the sticky material or the material strip embedded in the cutting device 500 after cutting can be reduced.

[0065] In some embodiments of this application, please continue to refer to Figure 2 and Figure 6 The shaping device 200 includes two rows of roller pressing assemblies spaced apart from each other, and the two rows of roller pressing assemblies are interference fit. Each row of roller pressing assemblies includes a plurality of second rollers 211 spaced apart from each other, and the second rollers 211 are mutually staggered in the conveying direction of the tab material strip. In practical applications, the tab material strip passes between the two rows of roller pressing assemblies, so that the tab material strip can be flattened with the help of the roller pressing assemblies.

[0066] It is worth understanding that the contact surface between the upper row of roller pressing assemblies and the tab material strip is a, and the contact surface between the other row of roller pressing assemblies and the roller pressing assemblies is b. The interference fit between the upper and lower rows of roller pressing assemblies means that the contact surface a and the contact surface b are in interference fit. In this way, the pressure of the roller pressing assembly on the tab material strip can be kept at a reasonable level, ensuring that the tab material strip can be flattened.

[0067] Furthermore, each second roller 211 is connected to a spring, and each second roller 211 can adjust the tightness of the fit up and down to prevent the second roller 211 from exerting too much pressure on the tab material strip, causing damage to the tab material strip, and to prevent the second roller 211 from exerting too little force on the tab material strip and failing to flatten the tab material strip.

[0068] In some embodiments of the present application, see Figure 1 and Figure 2 The pretreatment device 800 includes an ultrasonic welding module or a laser welding module, and the ultrasonic welding module or the laser welding module performs surface treatment on the pole tab 1 to increase the surface roughness of the pole tab 1 .

[0069] In a possible implementation, the pretreatment device 800 includes an ultrasonic welding module, and the welding head of the ultrasonic welding module can perform ultrasonic treatment on the surface of the pole tab 1 to increase the surface roughness of the pole tab 1. In this way, it can be prevented that the pole tab 1 cannot be adhered to the pole piece after being coated with glue or the adhesion effect is poor.

[0070] In another possible implementation, the pretreatment device 800 includes a laser welding module, and a welding head of the laser welding module can perform laser ablation on the surface of the pole tab 1 to increase the surface roughness of the pole tab 1 .

[0071] It should be noted that in another embodiment, the pre-treatment device 800 may also use chemical etching to increase the surface roughness of the tab 1 .

[0072] In some embodiments of the present application, see Figure 1 and Figure 2 The conveying assembly includes a tab clamping and conveying mechanism 400, which is disposed between the shaping device 200 and the cutting device 500. The tab clamping and conveying mechanism 400 is used to drive the tab material strip to move so as to drive the tab material strip to move forward.

[0073] In one possible implementation, please continue to see Figure 1 and Figure 2 The tab clamping and transferring mechanism 400 includes a guiding part and a tab clamping part. The guiding part is provided with a first channel for the tab material strip to pass through. The tab clamping part clamps the tab material strip and drives the tab material strip to move forward. Specifically, the tab clamping and transferring mechanism 400 also includes a conveying module, which is connected to the tab clamping part and is used to drive the tab clamping part to move in the conveying direction of the tab material strip. The movable space of the guiding part corresponding to the tab clamping part is set as a hollow structure, so that the tab clamping part can clamp the tab material strip from above and below the first channel and drive the tab material strip to move forward.

[0074] In practical applications, the pole ear clamping part can be specifically an air claw, which can be used to clamp the pole ear material strip, and then driven by the conveying module to drive the air claw and the pole ear material strip to move forward as a whole.

[0075] In the above embodiment, the first channel is presented as a groove in the guiding portion, and the first channel can guide the position of the pole tab material strip, reduce the deviation when the pole tab material strip is cut, help improve the cutting accuracy, and help improve the composite accuracy of the pole tab 1 and the pole piece.

[0076] In one embodiment of the present application, see Figure 1 and Figure 2 The tab cutting composite equipment includes a scale 130, a tension roller 140 and a supporting roller 150. The scale 130 is arranged between the unwinding roller 110 and the first guide roller 121, the tension roller 140 is arranged between the first guide roller 121 and the second guide roller 122, and the supporting roller 150 is arranged between the third guide roller 123 and the shaping device 200.

[0077] In one possible implementation, see Figure 2 and Figure 4The tab cutting composite equipment includes a first groove sensor 161, a second groove sensor 162 and a third groove sensor 163. A counterweight is arranged on the tension roller 140. The tab clamping and transferring mechanism 400 straightens the tab material strip forward. When the counterweight reaches the detection area of ​​the first groove sensor 161, the first groove sensor 161 is triggered. The first groove sensor 161 feeds back a material shortage signal to remind the replacement of the tab material roll; when the counterweight reaches the detection area of ​​the second groove sensor 162, the cache sensing is triggered, and the tab clamping and transferring mechanism 400 drives the tab material strip to move forward; when the counterweight reaches the third groove sensor 163, the surface cache amount has been used up, triggering the unwinding roller 110 to unwind.

[0078] In some embodiments of the present application, see Figure 1 and Figure 2 The conveying assembly includes a first clamping portion 610 , which is disposed on one side of the cutting device 500 . The first clamping portion 610 is used to transfer the cut tab 1 to the first burr processing device 700 .

[0079] In this embodiment, please continue to refer to Figure 1 and Figure 2 The first clamping part 610 includes a first air gripper 611, a vertical transfer cylinder 612 and a linear module 613. The first air gripper 611 is used to clamp the cut tab 1; the output end of the vertical transfer cylinder 612 is connected to the first air gripper 611, and is used to drive the first air gripper 611 to move along a conveying direction perpendicular to the tab material strip; the vertical transfer cylinder 612 is connected to the output end of the linear module 613, and the linear module 613 is used to drive the vertical transfer cylinder 612 to move along the conveying direction of the tab material strip, thereby driving the first air gripper 611 to move along the conveying direction of the tab material strip.

[0080] It should be noted that the conveying direction of the tab strip is Figure 2 The X direction in .

[0081] In some embodiments of the present application, see Figure 3 The conveying assembly includes a second clamping portion 620, and the second clamping portion 620 is used to drive the electrode tab 1 after burrs are removed to be transferred to the pre-processing device 800.

[0082] In this embodiment, please continue to refer to Figure 3 The second clamping part 620 includes a second air gripper 621 and a second driving module 622. The second air gripper 621 is installed on the second driving module 622 and is used to clamp the pole ear 1. The second driving module 622 is used to drive the second air gripper 621 to move along the X direction so that the second air gripper 621 can transfer the pole ear 1 from the first burr processing device 700 to the pre-processing station of the pre-processing device 800.

[0083] In some embodiments of the present application, the tab cutting composite equipment also includes a second burr processing device, which is arranged on the side of the pretreatment device 800 away from the first burr processing device 700, and the conveying assembly includes a third clamping portion 630, which is used to transfer the tab 1 located at the pretreatment device 800 to the second burr processing device.

[0084] In this embodiment, see Figure 3 The third clamping part includes a third driving cylinder 631, a fourth driving cylinder 632 and a third air claw 633. The third driving cylinder 631 drives the fourth driving cylinder 632 to move perpendicular to the X direction. The third air claw 633 is connected to the output end of the fourth driving cylinder 632. The fourth driving cylinder 632 is used to drive the third air claw 633 to move in the vertical direction. The third air claw 633 is used to clamp the pole ear 1.

[0085] In this embodiment, the second burr processing device includes two cylinders arranged opposite to each other up and down, and the output ends of the two cylinders are used to beat the upper surface and the lower surface of the pole ear 1 respectively to process the burrs in the pole ear 1 to prevent the burrs from scratching the pole piece.

[0086] In some embodiments of the present application, see Figure 5 The tab cutting composite equipment includes a glue coating device 1000, which is arranged on one side of the pretreatment device 800, and is used to coat the tab 1 with glue. The conveying component includes a fourth clamping part 640, and the fourth clamping part 640 is used to transfer the tab 1 located at the glue coating device 1000 and stick it to the pole piece at the composite station of the composite device 900.

[0087] In this embodiment, please continue to refer to Figure 5 The fourth clamping part 640 includes a fourth air gripper 643, a sixth driving cylinder 641 and a seventh driving cylinder 642. The fourth air gripper 643 is connected to the output end of the seventh driving cylinder 642. The seventh driving cylinder 642 is used to drive the fourth air gripper 643 to move in the vertical direction. The output end of the sixth driving cylinder 641 is connected to the seventh driving cylinder 642. The sixth driving cylinder 641 is used to drive the seventh driving cylinder 642 to move perpendicular to the X direction.

[0088] Furthermore, the sixth driving cylinder 641 can also move along the X direction through another linear driving module.

[0089] In some embodiments of the present application, see Figure 1The tab cutting composite device includes a resistance detection device 300, which is arranged between the shaping device 200 and the cutting device 500. The resistance detection device 300 is used to detect whether the adhesive part in the tab material strip is conductive with the tab. Specifically, the tab material strip is a tab 1 wrapped with adhesive, and the resistance detection device 300 is used to detect whether the adhesive part is conductive with the tab 1. If conductive, it is a defective product.

[0090] See also Figure 8 In another aspect, the present application discloses a tab cutting and compounding method, comprising the following steps:

[0091] S110: The unwinding device unwinds the lug strip, so that the lug strip is guided through a plurality of guiding rollers in sequence;

[0092] S120: shaping the tab material strip so that the tab material strip is flattened;

[0093] S130: transferring the flattened tab material strip to the cutting device 500 to cut the tab material strip to obtain the tab 1;

[0094] S140: performing burr treatment on the tab 1;

[0095] S150: performing composite pretreatment on the pole ear 1 to increase the surface roughness of the pole ear 1;

[0096] S160: Glue is applied to the surface of the pole tab 1, and the glued pole tab 1 is adhered to the pole piece.

[0097] In this way, the cutting accuracy of the pole lug 1 can be guaranteed, thereby ensuring the accuracy of the combination of the pole lug 1 and the pole piece. In the embodiment of the present application, after the pole lug 1 is cut, the first burr treatment device 700 can be used to remove the burrs from the pole lug 1 to prevent the burrs from scratching the pole piece; at the same time, before the pole lug 1 is combined with the pole piece, the pretreatment device 800 can be used to increase the surface roughness of the pole lug 1, thereby improving the bonding effect when the pole lug 1 is combined with the pole piece.

[0098] It is worth understanding that the tab cutting and compounding method of the embodiment of the present application can be applied to the aforementioned tab cutting and compounding equipment, and has all the technical effects of the aforementioned tab cutting and compounding equipment, which will not be repeated here.

[0099] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0100] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0101] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0102] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0103] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

Claims

1. A tab cutting composite device, characterized in that: include: An unwinding device, comprising an unwinding roller, wherein the unwinding roller is used to wind up the tab material strip; A shaping device, disposed on one side of the unwinding roller, and used for flattening the tab material strip; A cutting device, comprising a cutting mechanism, wherein the cutting mechanism is used to cut the tab material strip to obtain a tab; A pretreatment device, used for pretreatment of the surface of the pole lug to increase the surface roughness of the pole lug; A conveying assembly is used to transfer the tab material strip or the tab.

2. The tab cutting composite equipment according to claim 1, characterized in that: A first roller is provided on one side of the cutting mechanism. The first roller is higher than the cutting surface of the cutting mechanism. The first roller is used to lift the electrode tab after cutting.

3. The tab cutting composite equipment according to claim 1, characterized in that: The shaping device includes two rows of roller assemblies spaced apart from each other, the two rows of roller assemblies are interference fit, wherein each row of the roller assemblies includes a plurality of second rollers spaced apart from each other, and the second rollers are staggered with each other in the conveying direction of the tab material strip.

4. The tab cutting composite equipment according to claim 1, characterized in that: The pretreatment device comprises an ultrasonic welding module or a laser welding module, and the ultrasonic welding module or the laser welding module performs surface treatment on the pole lug to increase the surface roughness of the pole lug.

5. The tab cutting composite equipment according to claim 1, characterized in that: The unwinding device comprises a plurality of guide rollers, which are arranged at intervals on one side of the unwinding roller, and each of the guide rollers is provided with a groove matching the tab material strip.

6. The tab cutting composite equipment according to any one of claims 1 to 4, characterized in that: The conveying assembly includes a tab clamping and conveying mechanism, which is disposed between the shaping device and the cutting device, and is used to drive the tab material strip to move.

7. The tab cutting composite equipment according to claim 5, characterized in that: The pole lug conveying mechanism includes a guiding part and a pole lug clamping part, wherein the guiding part is provided with a first channel for the pole lug material strip to pass through, and the pole lug clamping part clamps the pole lug material strip and drives the pole lug material strip to move forward, wherein the movable space of the guiding part corresponding to the pole lug clamping part is set as a hollow structure.

8. The tab cutting composite equipment according to claim 1, characterized in that: It also includes a first burr processing device, which is arranged on a side of the cutting device away from the unwinding device, and is used to process burrs on the tab.

9. The tab cutting composite equipment according to claim 1, characterized in that: It also includes a resistance detection device, which is arranged between the shaping device and the cutting device, and is used to detect whether the glue-applied part in the tab material strip is conductive with the tab.

10. A tab cutting and compounding method, characterized in that: The steps include: The unwinding device unwinds the lug strip, allowing the lug strip to pass through multiple guide rollers in sequence; Shaping the tab material strip so that the tab material strip is flattened; The flattened tab material strip is transferred to a cutting device to cut the tab material strip to obtain tabs; Processing the burrs of the tab; Performing composite pretreatment on the tab to increase the surface roughness of the tab; Glue is applied to the surface of the pole ear, and the glue-coated pole ear is adhered to the pole piece.

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