Battery tab bending machine and battery tab bending method

Abstract

The invention provides a battery tab bending machine and a battery tab bending method.The battery tab bending machine comprises a supporting platform, a conveying assembly, a first bending assembly and a second bending assembly. The conveying structure comprises a conveying belt and a working platform deck. The first bending assembly comprises a first bending structure and a first limiting structure. The second bending assembly comprises a second bending structure and a second limiting structure, the second bending structure comprises a second mounting base, a second rotating air cylinder, a second rotating shaft, a second rotating pressing plate and a pressing head air cylinder, the second mounting base is arranged on the supporting platform, the second rotating air cylinder is arranged on the second mounting base, and the second rotating shaft is connected with the second rotating air cylinder; the second rotating pressing plate is arranged on the second rotating shaft, and the pressing head air cylinder is matched with the second rotating pressing plate. According to the technical scheme, the problem that in the prior art, when the battery tab is bent, the bending precision is low is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery tab bending, and in particular to a battery tab bending machine and a battery tab bending method. Background Art

[0002] The bending and series welding of lithium battery tabs is an important process in the production of lithium batteries. The traditional manual bending of battery tabs not only has low production efficiency, but also inconsistent bending positions, resulting in the tabs extending beyond the two sides of the battery cover after battery packaging. During transportation, the tabs extending beyond the battery cover may contact the battery casing due to shaking, causing a short circuit. Therefore, lithium batteries produced using traditional processing methods are prone to short circuits, poor product consistency, and unstable quality.

[0003] Some existing devices (for example, the authorization announcement number is: CN 218310361 U, and the name is: A battery ear bending device) include a vertical moving module, a fixed plate is provided on the vertical moving module, a driving member is provided on the fixed plate, a flexible bending block is connected to the driving member, and the driving member is used to drive the flexible bending block to move up and down, and a horizontal moving module is provided below the fixed plate. The horizontal moving module is used to drive the battery ear to move horizontally to adjust the position of the battery ear, and then the driving member drives the flexible bending block to move downward to achieve the bending of the battery ear. The position where the flexible bending block contacts the battery ear will bend as the flexible bending block moves downward, but this bending method requires precise control of the downward movement of the flexible bending block. In actual applications, the problem of inaccurate downward movement of the flexible bending block is prone to occur, resulting in the battery ear The degree of bending is not accurate enough. Summary of the invention

[0004] The present application provides a battery tab bending machine and a battery tab bending method to solve the problem of low bending accuracy when bending the battery tab in the prior art.

[0005] According to the present application, a battery tab bending machine is provided, comprising: a support platform, a conveying assembly, a first bending assembly and a second bending assembly. The conveying assembly comprises a conveying structure, the conveying structure comprises a conveying belt and a working platform, the conveying belt is located on the support platform, the working platform is located on the conveying belt, and the battery cell is located on the working platform. The first bending assembly is located on the support platform, the first bending assembly comprises a first bending structure and a first limiting structure, the first bending structure is used to pre-bend the battery tab, and the first limiting structure is used to limit the battery cell. The second bending assembly is located on the support platform, the second bending assembly comprises a second bending structure and a second limiting structure, the second bending structure is used to bend and shape the battery tab, the second limiting structure is used to limit the battery cell, the second bending structure comprises a second mounting seat, a second rotating cylinder, a second rotating shaft, a second rotating platen and a pressure head cylinder, the second mounting seat is arranged on the support platform, the second rotating cylinder is arranged on the second mounting seat, the second rotating shaft and the second rotating cylinder are connected, the second rotating platen is arranged on the second rotating shaft, and the pressure head cylinder and the second rotating platen cooperate.

[0006] In some embodiments, the second limiting structure includes a second support seat, a fourth limiting cylinder and a fifth limiting cylinder. The second support seat is arranged on the supporting platform, the fourth limiting cylinder is arranged on the second support seat, and the fifth limiting cylinder is arranged on the supporting platform. The fourth limiting cylinder and the fifth limiting cylinder are arranged opposite to each other and are respectively located on both sides of the battery ear. The fourth limiting cylinder and the working platform have an inclined angle setting.

[0007] In some embodiments, the second limiting structure also includes a sixth limiting cylinder, a second mounting plate, a second fixed cylinder, a second stopper and two groups of second sliding rods. The second mounting plate is connected to the second support seat. The sixth limiting cylinder is installed on the second mounting plate and is vertically arranged toward the working platform. The second fixed cylinder is arranged on the second mounting plate, and the second fixed cylinder and the fourth limiting cylinder are respectively located on both sides of the second mounting plate. The second mounting plate has two groups of second long holes. The two groups of second sliding rods and the two groups of second long holes are arranged one by one, and the second sliding rod is movably arranged in the second long hole. The first end of the second stopper is connected to the two groups of second sliding rods, and the second end of the second stopper is connected to the cylinder rod of the second fixed cylinder.

[0008] In some embodiments, the second bending structure further includes a second adjusting cylinder, which is disposed on a second supporting seat and connected to a second mounting seat, and the second adjusting cylinder and the second rotating shaft are respectively located on both sides of the second mounting seat.

[0009] In some embodiments, the conveying structure also includes a third support seat, a fourth support seat, a third fixed cylinder and a fourth fixed cylinder. The third support seat and the fourth support seat are both arranged on the support platform. The third fixed cylinder is located on the third support seat and is arranged corresponding to the first bending structure. The fourth fixed cylinder is located on the fourth support seat and is arranged corresponding to the second bending structure.

[0010] In some embodiments, the conveying structure also includes two groups of support plates, both of which are arranged on the support platform and are respectively located on both sides of the conveying belt. Two groups of protrusions are arranged on the side of the working platform facing the conveying belt. Both groups of protrusions are located between the two groups of support plates and are respectively abutted against the two groups of support plates. The working platform is movably arranged on the two groups of support plates.

[0011] In some embodiments, the support platform has a mating opening, and the conveying assembly also includes a driving structure, the driving structure includes a first connecting plate, a second connecting plate, a driving motor, a driving pulley, a driving belt and a driven pulley, the first connecting plate and the second connecting plate are arranged opposite to each other and are respectively connected to the inner wall of the mating opening, the driving motor is arranged on the first connecting plate, the driving pulley and the driving motor are connected in transmission, the driving belt is sleeved on the circumferential outer side of the driving pulley and the driven pulley, and the driven pulley is arranged on the first connecting plate.

[0012] In some embodiments, the driving structure also includes a driving shaft, a driven shaft and two groups of driven belts. The first end of the driving shaft is connected to the driven pulley, and the second end of the driving shaft is rotatably disposed on the second connecting plate. The two groups of driven belts are sleeved on the circumferential outer side of the driving shaft and the driven shaft. The circumferential outer side of the driving shaft and the driven shaft is provided with gear teeth, and the gear teeth are meshed with the belt teeth on the two groups of driven belts. The two ends of the driven shaft are respectively rotatably disposed on the first connecting plate and the second connecting plate, and the gear teeth on the driven shaft are meshed with the belt teeth on the conveyor belt to drive the conveyor belt.

[0013] In some embodiments, the battery tab bending machine also includes a control component, which includes a PLC controller and two groups of on-site sensors. The two groups of on-site sensors are both arranged on a supporting platform. The two groups of on-site sensors are respectively arranged corresponding to the first bending structure and the second bending structure. The two groups of on-site sensors are both electrically connected to the PLC controller, and the conveying component, the first bending component and the second bending component are all electrically connected to the PLC controller.

[0014] The present application also provides a battery tab bending method, which comprises the following steps:

[0015] The working platform moves under the drive of the conveyor belt so that the battery sheet is located below the first bending assembly;

[0016] The first limiting structure limits the battery cell, and the first bending structure pre-bends the battery tab;

[0017] The working platform continues to move under the drive of the conveyor belt, so that the battery sheet is located below the second bending assembly;

[0018] The second limiting structure limits the battery cell, and the second bending structure bends the battery tab into shape.

[0019] By applying the technical solution of the present application, the working platform drives the battery cell to move along with the movement of the conveyor belt to adjust the position of the battery cell. When the battery cell moves to the bottom of the first bending assembly, the first bending structure pre-bends the battery pole ear. The pre-bending can make the bending degree of the end of the battery pole ear meet the requirements, while improving the bending efficiency of subsequent bending and forming. The first limiting structure is used to limit and fix the battery cell to prevent the battery pole ear from being displaced during the pre-bending process, affecting the pre-bending effect. After the pre-bending is completed, the battery cell flows along the conveyor belt to the bottom of the second bending assembly driven by the working platform, and the second bending structure bends the battery pole ear. The second limiting structure is used to limit the battery cell to prevent the battery pole ear from being displaced during the bending and forming process, affecting the accuracy of bending and forming. The second mounting seat is arranged on the supporting platform, the second rotating cylinder is arranged on the second mounting seat, the second rotating shaft is connected with the second rotating cylinder, the second rotating shaft rotates under the drive of the second rotating cylinder, the second rotating plate is arranged on the second rotating shaft, and can rotate with the rotation of the second rotating shaft, the second rotating plate gradually contacts with the battery pole ear during the rotation process, and with the rotation of the second rotating plate, the second rotating plate gradually applies force to the battery pole ear to make the battery pole ear bend, with the continued rotation of the second rotating plate, the second rotating plate separates from the battery pole ear, and the bending of the battery pole ear is completed, the pressure head cylinder and the second rotating plate cooperate to apply force to the second rotating plate to increase the bending power, and this arrangement makes the bending of the battery pole ear more accurate, because at this time the rotation of the second rotating plate is determined, and after the battery pole ear is bent to a suitable curvature, the second rotating plate is separated from the battery pole ear. The technical solution of the present application effectively solves the problem of low bending accuracy when the battery pole ear is bent in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 work.

[0021] Figure 1 A schematic diagram of the structure of a battery tab bending machine according to an embodiment of the present application is shown;

[0022] Figure 2 A schematic structural diagram of a second bending structure according to an embodiment of the present application is shown;

[0023] Figure 3 A schematic structural diagram of a second position limiting structure in an embodiment of the present application is shown;

[0024] Figure 4 A schematic structural diagram of a second bending assembly according to an embodiment of the present application is shown;

[0025] Figure 5 Shows Figure 4 A local enlarged schematic diagram of the middle A;

[0026] Figure 6 A schematic diagram showing the structure of the conveying structure of an embodiment of the present application is shown;

[0027] Figure 7 A schematic diagram showing the structure of the driving structure of an embodiment of the present application is shown;

[0028] Figure 8 A schematic structural diagram of a first bending assembly according to an embodiment of the present application is shown;

[0029] Fig. 9 A schematic structural diagram of the first bending assembly in another angle of the embodiment of the present application is shown.

[0030] Description of reference numerals:

[0031] 10. Support platform; 11. Matching port; 20. Conveying assembly; 21. Conveying structure; 211. Conveying belt; 212. Working platform; 213. Third supporting seat; 214. Fourth supporting seat; 215. Third fixed cylinder; 216. Fourth fixed cylinder; 217. Support plate; 22. Driving structure; 221. First connecting plate; 222. Second connecting plate; 223. Driving motor; 224. Active pulley; 225. Driving belt; 226. Driven pulley; 227. Driving shaft; 228. Driven shaft; 229. Driven belt; 30. First bending assembly; 31. First bending structure; 311. First mounting seat; 312. First rotating cylinder; 313. First rotating shaft; 314. First rotating plate; 32. First limiting structure; 321. First supporting seat; 322. First limiting cylinder Cylinder; 323, second limit cylinder; 324, third limit cylinder; 325, first mounting plate; 326, first fixed cylinder; 327, first stopper; 328, first slide bar; 40, second bending assembly; 41, second bending structure; 411, second mounting seat; 412, second rotating cylinder; 413, second rotating shaft; 414, second rotating pressure plate; 415, pressure head cylinder; 416, second adjustment cylinder; 42, second limit structure; 421, second support seat; 422, fourth limit cylinder; 4221, limiter; 423, fifth limit cylinder; 424, sixth limit cylinder; 425, second mounting plate; 426, second fixed cylinder; 427, second stopper; 428, second slide bar; 50, control assembly; 51, in-registration sensor; 100, battery cell; 101, battery ear. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0033] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0034] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this 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 cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0035] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0036] It should also be noted that in the description of this application, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0037] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0039] like Figures 1 to 9As shown, a battery tab bending machine provided in an embodiment includes: a support platform 10, a conveying assembly 20, a first bending assembly 30 and a second bending assembly 40. The conveying assembly 20 includes a conveying structure 21, and the conveying structure 21 includes a conveying belt 211 and a working platform 212. The conveying belt 211 is located on the support platform 10, the working platform 212 is located on the conveying belt 211, and the battery cell 100 is located on the working platform 212. The first bending assembly 30 is located on the support platform 10, and the first bending assembly 30 includes a first bending structure 31 and a first limiting structure 32. The first bending structure 31 is used to pre-bend the battery tab 101, and the first limiting structure 32 is used to limit the battery cell 100. The second bending assembly 40 is located on the supporting platform 10, and the second bending assembly 40 includes a second bending structure 41 and a second limiting structure 42. The second bending structure 41 is used to bend and shape the battery ear 101, and the second limiting structure 42 is used to limit the battery cell 100. The second bending structure 41 includes a second mounting seat 411, a second rotating cylinder 412, a second rotating shaft 413, a second rotating pressure plate 414 and a pressure head cylinder 415. The second mounting seat 411 is arranged on the supporting platform 10, and the second rotating cylinder 412 is arranged on the second mounting seat 411. The second rotating shaft 413 and the second rotating cylinder 412 are connected. The second rotating pressure plate 414 is arranged on the second rotating shaft 413, and the pressure head cylinder 415 and the second rotating pressure plate 414 cooperate with each other.

[0040] By applying the technical solution of this embodiment, the working platform 212 drives the battery cell 100 to move along with the movement of the conveyor belt 211 to adjust the position of the battery cell 100. When the battery cell 100 moves below the first bending assembly 30, the first bending structure 31 pre-bends the battery ear 101. The pre-bending can make the bending degree of the battery ear end meet the requirements and improve the bending efficiency of subsequent bending forming. The first limiting structure 32 is used to limit and fix the battery cell 100 to prevent the battery ear 101 from During the pre-bending process, the battery cell 100 is displaced, which affects the pre-bending effect. After the pre-bending is completed, the battery cell 100 flows along the conveyor belt 211 to the bottom of the second bending assembly 40 under the drive of the working platform 212, and the second bending structure 41 bends the battery tab 101 (that is, the secondary bending reaches the final bending requirement). The second limiting structure 42 is used to limit the battery cell 100 to prevent the battery tab 101 from being displaced during the bending process, which affects the accuracy of the bending. The second mounting seat 411 is arranged on the supporting platform 10, the second rotating cylinder 412 is arranged on the second mounting seat 411, the second rotating shaft 413 is connected to the second rotating cylinder 412, the second rotating shaft 413 rotates under the drive of the second rotating cylinder 412, the second rotating pressing plate 414 is arranged on the second rotating shaft 413, and can rotate with the rotation of the second rotating shaft 413, the second rotating pressing plate 414 gradually contacts with the battery pole ear 101 during the rotation process, and with the rotation of the second rotating pressing plate 414, the second rotating pressing plate 414 gradually moves toward the battery pole ear 101 The force is applied to bend the battery tab 101. As the second rotating platen 414 continues to rotate, the second rotating platen 414 separates from the battery tab 101, completing the bending of the battery tab 101. The pressure head cylinder 415 cooperates with the second rotating platen 414 to apply force to the second rotating platen 414, increasing the power of bending. This arrangement makes the bending of the battery tab 101 more precise and more efficient, because the rotation of the second rotating platen is determined at this time. After the battery tab 101 is bent to a suitable curvature, the second rotating platen 414 separates from the battery tab 101. The technical solution of this embodiment effectively solves the problem of low bending accuracy when the battery tab 101 is bent in the prior art.

[0041] like Figure 4 and Figure 5As shown, in some embodiments, the second limiting structure 42 includes a second support seat 421, a fourth limiting cylinder 422 and a fifth limiting cylinder 423, the second support seat 421 is arranged on the support platform 10, the fourth limiting cylinder 422 is arranged on the second support seat 421, and the fifth limiting cylinder 423 is arranged on the support platform 10, the fourth limiting cylinder 422 and the fifth limiting cylinder 423 are arranged opposite to each other and are respectively located on both sides of the battery pole ear 101, and the fourth limiting cylinder 422 and the working platform 212 are set at an inclined angle. Two groups of limit blocks 4221 are arranged at the cylinder rod end of the fourth limit cylinder 422, and the two groups of limit blocks 4221 are respectively arranged corresponding to the positive and negative groups of battery pole ears 101, and the limit block 4221 is in surface contact with the battery pole ear 101, and the battery pole ear faces the side of the limit block 4221, and the side of the limit block 4221 in contact with the battery pole ear 101, when in surface contact, the ratio of the side area to the surface area is between 1 / 9 and 1 / 6, when it is less than 1 / 9, the limit block 4221 is prone to bend during the limiting process, and when it is greater than 1 / 6, the battery pole ear 101 is affected by the limiting block 4221 when the bending angle is too large, and it is easy to break. After actual application, it is set between 1 / 9 and 1 / 6, and the limit block 4221 is not easy to be deformed due to the bending of the battery pole ear 101 when limiting, and the surface contact is close to phase contact, and the bending accuracy of the battery pole ear 101 is higher.

[0042] like Figure 3 and Figure 4 As shown, in some embodiments, the second limiting structure 42 also includes a sixth limiting cylinder 424, a second mounting plate 425, a second fixed cylinder 426, a second stopper 427 and two sets of second slide bars 428, the second mounting plate 425 is connected to the second support seat 421, the sixth limiting cylinder 424 is installed on the second mounting plate 425, and is vertically arranged toward the working platform 212, the sixth limiting cylinder 424 can limit the side of the battery cell 100 away from the battery ear 101 to prevent the battery cell 100 from moving when bent, the second fixed cylinder 426 is arranged on the second mounting plate 425, and the second fixed cylinder 426 is arranged on the second mounting plate 425. The cylinder 426 and the fourth limiting cylinder 422 are respectively located on both sides of the second mounting plate 425. The second mounting plate 425 has two groups of second long holes. The two groups of second sliding rods 428 and the two groups of second long holes are arranged one by one, and the second sliding rods 428 are movably arranged in the second long holes. The first end of the second stop block 427 is connected to the two groups of second sliding rods 428, and the second end of the second stop block 427 is connected to the cylinder rod of the second fixed cylinder 426. The second fixed cylinder 426 drives the second stop block 427 to move, thereby limiting the working platform 212, so that the working platform 212 stops moving after moving to the pre-bending position.

[0043] like Figure 4As shown, in some embodiments, the second bending structure 41 also includes a second adjusting cylinder 416, which is disposed on a second supporting seat 421, and the second adjusting cylinder 416 is connected to a second mounting seat 411, and the second adjusting cylinder 416 and the second rotating axis 413 are respectively located on both sides of the second mounting seat 411, and the second adjusting cylinder 416 can drive the second rotating pressure plate 414 to move, thereby realizing the position adjustment of the second rotating pressure plate 414 and the battery pole ear 101, thereby meeting the flexible bending requirements of battery pole ears 101 of different sizes.

[0044] It should be noted that the first bending structure 31 includes a first mounting seat 311, a first rotating cylinder 312, a first rotating shaft 313 and a first rotating plate 314. The first mounting seat 311 is arranged on the supporting platform 10, the first rotating cylinder 312 is arranged on the first mounting seat 311, the first rotating cylinder 312 and the first rotating shaft 313 are connected, and the first rotating plate 314 is arranged on the first rotating shaft 313. The first bending structure 31 also includes a first adjusting cylinder, which is arranged on the supporting platform 10, the first adjusting cylinder and the first mounting seat 311 are connected, and the first adjusting cylinder and the first rotating shaft 313 are respectively located on both sides of the first mounting seat 311.

[0045] The first limiting structure 32 includes a first support seat 321, a first limiting cylinder 322 and a second limiting cylinder 323. The first support seat 321 is arranged on the support platform 10, the first limiting cylinder 322 is arranged on the first support seat 321, and the second limiting cylinder 323 is arranged on the support platform 10. The first limiting cylinder 322 and the second limiting cylinder 323 are arranged opposite to each other and are respectively located on both sides of the battery pole ear 101. The first limiting cylinder 322 and the second limiting cylinder 323 are both arranged vertically to the working platform 212. The first limiting structure 32 also includes a third limiting cylinder 324, a first mounting plate 325, a first fixed cylinder 326, a first stopper 327 and two groups of first sliding bars 328. The first mounting plate 325 is connected to the first support seat 321. The third limiting cylinder 324 is installed on the first mounting plate 325 and is vertically arranged toward the working platform 212. The first fixed cylinder 326 is arranged on the first mounting plate 325, and the first fixed cylinder 326 and the second limiting cylinder 323 are respectively located on both sides of the first mounting plate 325. The first mounting plate 325 has two groups of first long holes. The two groups of first sliding bars 328 and the two groups of first long holes are arranged one by one, and the first sliding bar 328 is movably arranged in the first long hole. The first end of the first stopper 327 is connected to the two groups of first sliding bars 328, and the second end of the first stopper 327 is connected to the cylinder rod of the first fixed cylinder 326.

[0046] like Figure 6As shown, in some embodiments, the conveying structure 21 further includes a third support seat 213, a fourth support seat 214, a third fixed cylinder 215 and a fourth fixed cylinder 216. The third support seat 213 and the fourth support seat 214 are both arranged on the supporting platform 10. The third fixed cylinder 215 is located on the third support seat 213 and is arranged corresponding to the first bending structure 31. When pre-bending, the third fixed cylinder 215 abuts against one side of the working platform 212 (the side where the working platform 212 and the conveying belt 211 flow perpendicularly), so as to limit the position of the working platform 212. The fourth fixed cylinder 216 is located on the fourth support seat 214 and is arranged with the second bending structure 41. When bending and forming, the fourth fixed cylinder 216 abuts against one side of the working platform 212 (the side where the working platform 212 and the conveying belt 211 flow perpendicularly), so as to limit the position of the working platform 212.

[0047] like Figure 6 As shown, in some embodiments, the conveying structure 21 also includes two groups of support plates 217, and the two groups of support plates 217 are both arranged on the support platform 10 and are respectively located on both sides of the conveying belt 211. Two groups of latching protrusions are arranged on the side of the working platform 212 facing the conveying belt 211, and the two groups of latching protrusions are both located between the two groups of support plates 217 and are respectively abutted against the two groups of support plates 217, so that the working platform 212 can only move along the flow direction of the conveying belt 211. The working platform 212 is movably arranged on the two groups of support plates 217, and the support plates 217 play a supporting and guiding role.

[0048] like Figure 7 As shown, in some embodiments, the support platform 10 has a mating opening 11, and the conveying assembly 20 also includes a driving structure 22, the driving structure 22 includes a first connecting plate 221, a second connecting plate 222, a driving motor 223, a driving pulley 224, a driving belt 225 and a driven pulley 226, the first connecting plate 221 and the second connecting plate 222 are arranged opposite to each other and are respectively connected to the inner walls of the mating opening 11, the driving motor 223 is arranged on the first connecting plate 221, the driving pulley 224 and the driving motor 223 are transmission-connected, the driving motor 223 drives the driving pulley 224 to rotate, the driving belt 225 is sleeved on the circumferential outer side of the driving pulley 224 and the driven pulley 226, the driving pulley 224 drives the driving belt 225 to move, the driven pulley 226 is arranged on the first connecting plate 221, and the driving belt 225 drives the driven pulley 226 to rotate.

[0049] like Figure 6 and Figure 7As shown, in some embodiments, the driving structure 22 further includes a driving shaft 227, a driven shaft 228 and two sets of driven belts 229. The first end of the driving shaft 227 is connected to the driven pulley 226, and the second end of the driving shaft 227 is rotatably disposed on the second connecting plate 222. The driving shaft 227 is driven by the driven pulley 226 to rotate synchronously. The two sets of driven belts 229 are sleeved on the circumferential outer sides of the driving shaft 227 and the driven shaft 228. The driven shaft 228 is provided with gear teeth on the circumferential outer side, and the gear teeth are meshed with the belt teeth on the two sets of driven belts 229. The two sets of driven belts 229 move under the drive of the driving shaft 227, thereby driving the driven shaft 228 to rotate. The two ends of the driven shaft 228 are rotatably provided on the first connecting plate 221 and the second connecting plate 222 respectively, and the gear teeth on the driven shaft 228 are meshed with the belt teeth on the conveying belt 211 to drive the conveying belt 211.

[0050] like Figure 1 As shown, in some embodiments, the battery tab bending machine also includes a control component 50, the control component 50 includes a PLC controller and two groups of on-board sensors 51, the two groups of on-board sensors 51 are both arranged on the supporting platform 10, the two groups of on-board sensors 51 are respectively arranged corresponding to the first bending structure 31 and the second bending structure 41, the two groups of on-board sensors 51 are both electrically connected to the PLC controller, and the conveying component 20, the first bending component 30 and the second bending component 40 are all electrically connected to the PLC controller.

[0051] The specific control process is as follows: when the sensor 51 detects that the working platform 212 moves to the pre-bending position, the detection signal is transmitted to the PLC controller, and the PLC controller controls the first fixed cylinder 326 and the third fixed cylinder 215 to limit the working platform 212, and then controls the first limiting cylinder 322, the second limiting cylinder 323 and the third limiting cylinder 324 to limit the battery cell 100. After the limiting is completed, the PLC controller controls the first rotating cylinder 312 to work, driving the first rotating pressure plate 314 to pre-bend the battery ear 101. After the pre-bending is completed, the PLC controller controls the first fixed cylinder 326 and the third fixed cylinder 215 to stop limiting the working platform 212 , the first limiting cylinder 322, the second limiting cylinder 323 and the third limiting cylinder 324 stop limiting the battery cell 100, and the working platform 212 continues to move. When the sensor 51 detects that the working platform 212 moves to the bending and forming position, the detection signal is transmitted to the PLC controller. The PLC controller controls the second fixed cylinder 426 and the fourth fixed cylinder 216 to limit the working platform 212, and then controls the fourth limiting cylinder 422, the fifth limiting cylinder 423 and the sixth limiting cylinder 424 to limit the battery cell 100. After the limiting is completed, the PLC controller controls the second rotating cylinder 412 to work, driving the second rotating pressure plate 414 to bend and form the battery tab 101.

[0052] This embodiment also provides a battery tab bending method, which includes the following steps:

[0053] The work platform 212 moves under the drive of the conveyor belt 211 so that the battery cell 100 is located below the first bending assembly 30;

[0054] The first limiting structure 32 limits the battery cell 100, and the first bending structure 31 pre-bends the battery tab 101;

[0055] The work platform 212 continues to move under the drive of the conveyor belt 211, so that the battery cell 100 is located below the second bending assembly 40;

[0056] The second limiting structure 42 limits the battery cell 100 , and the second bending structure 41 bends the battery tab 101 into shape.

[0057] The working platform 212 drives the battery cell 100 to move along with the movement of the conveyor belt 211 to adjust the position of the battery cell 100. When the battery cell 100 moves to the bottom of the first bending assembly 30, the first bending structure 31 pre-bends the battery pole ear 101. The pre-bending can make the bending degree of the end of the battery pole ear meet the requirements, and at the same time improve the bending efficiency of subsequent bending and forming. Since the first limiting cylinder 322 and the second limiting cylinder 323 are vertically arranged with the battery pole ear 101 during pre-bending, the first limiting cylinder 322 and the second limiting cylinder 323 have a large contact area with the battery pole ear 101 when limiting the battery pole ear 101, the displacement degree of the battery pole ear 101 is small, and the bending accuracy is high. The battery ear 101 is high, and during pre-bending, the bending degree of the battery ear 101 is between 60° and 80°, the battery ear 101 is not easy to break, the first limiting structure 32 is used to limit and fix the battery cell 100 to prevent the battery ear 101 from being displaced during the pre-bending process and affecting the pre-bending effect. After the pre-bending is completed, the battery cell 100 flows along the conveyor belt 211 to the bottom of the second bending component 40 under the drive of the working platform 212, and the second bending structure 41 bends the battery ear 101 into shape. The second limiting structure 42 is used to limit the battery cell 100 to prevent the battery ear 101 from being displaced during the bending process and affecting the accuracy of the bending.

[0058] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0059] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A battery tab bending machine, characterized in that: include: Support platform (10); A conveying assembly (20), the conveying assembly (20) comprising a conveying structure (21), the conveying structure (21) comprising a conveying belt (211) and a working platform (212), the conveying belt (211) being located on the supporting platform (10), the working platform (212) being located on the conveying belt (211), and the battery cell (100) being located on the working platform (212); a first bending assembly (30), the first bending assembly (30) being located on the supporting platform (10), the first bending assembly (30) comprising a first bending structure (31) and a first limiting structure (32), the first bending structure (31) being used for pre-bending the battery tab (101), and the first limiting structure (32) being used for limiting the position of the battery cell (100); a second bending assembly (40), the second bending assembly (40) being located on the supporting platform (10), the second bending assembly (40) comprising a second bending structure (41) and a second limiting structure (42), the second bending structure (41) being used to bend and shape the battery tab (101), the second limiting structure (42) being used to limit the position of the battery cell (100), the second bending structure (41) comprising a second mounting seat (411), a second rotating cylinder (412), and a second rotating A rotating shaft (413), a second rotating pressure plate (414) and a pressure head cylinder (415), the second mounting seat (411) is arranged on the supporting platform (10), the second rotating cylinder (412) is arranged on the second mounting seat (411), the second rotating shaft (413) and the second rotating cylinder (412) are connected, the second rotating pressure plate (414) is arranged on the second rotating shaft (413), and the pressure head cylinder (415) and the second rotating pressure plate (414) cooperate with each other.

2. The battery tab bending machine according to claim 1, characterized in that: The second limiting structure (42) comprises a second support seat (421), a fourth limiting cylinder (422) and a fifth limiting cylinder (423); the second support seat (421) is arranged on the support platform (10); the fourth limiting cylinder (422) is arranged on the second support seat (421); the fifth limiting cylinder (423) is arranged on the support platform (10); the fourth limiting cylinder (422) and the fifth limiting cylinder (423) are arranged opposite to each other and are respectively located on both sides of the battery tab (101); the fourth limiting cylinder (422) and the working platform (212) are arranged at an inclined angle.

3. The battery tab bending machine according to claim 2, characterized in that: The second limiting structure (42) further comprises a sixth limiting cylinder (424), a second mounting plate (425), a second fixed cylinder (426), a second stopper (427) and two sets of second sliding bars (428), wherein the second mounting plate (425) is connected to the second support seat (421), the sixth limiting cylinder (424) is mounted on the second mounting plate (425) and is vertically arranged toward the working platform (212), the second fixed cylinder (426) is arranged on the second mounting plate (425), and the second fixed cylinder (426) is arranged on the second mounting plate (425). The cylinder (426) and the fourth limiting cylinder (422) are respectively located on both sides of the second mounting plate (425), the second mounting plate (425) has two groups of second long holes, the two groups of second sliding rods (428) and the two groups of second long holes are arranged one by one, and the second sliding rods (428) are movably arranged in the second long holes, the first end of the second stop block (427) is connected to the two groups of second sliding rods (428), and the second end of the second stop block (427) is connected to the cylinder rod of the second fixed cylinder (426).

4. The battery tab bending machine according to claim 3, characterized in that: The second bending structure (41) further comprises a second adjusting cylinder (416), wherein the second adjusting cylinder (416) is arranged on the second supporting seat (421), the second adjusting cylinder (416) and the second mounting seat (411) are connected, and the second adjusting cylinder (416) and the second rotating shaft (413) are respectively located on two sides of the second mounting seat (411).

5. The battery tab bending machine according to any one of claims 1 to 4, characterized in that: The conveying structure (21) further comprises a third support seat (213), a fourth support seat (214), a third fixed cylinder (215) and a fourth fixed cylinder (216); the third support seat (213) and the fourth support seat (214) are both arranged on the support platform (10); the third fixed cylinder (215) is located on the third support seat (213) and is arranged corresponding to the first bending structure (31); the fourth fixed cylinder (216) is located on the fourth support seat (214) and is arranged with the second bending structure (41).

6. The battery tab bending machine according to any one of claims 1 to 4, characterized in that: The conveying structure (21) further comprises two groups of support plates (217), both groups of support plates (217) are arranged on the support platform (10) and are respectively located on both sides of the conveying belt (211); two groups of latching protrusions are arranged on the side of the working platform (212) facing the conveying belt (211); both groups of latching protrusions are located between the two groups of support plates (217) and are respectively abutted against the two groups of support plates (217); and the working platform (212) is movably arranged on the two groups of support plates (217).

7. The battery tab bending machine according to any one of claims 1 to 4, characterized in that: The support platform (10) has a mating opening (11); the conveying assembly (20) further comprises a driving structure (22); the driving structure (22) comprises a first connecting plate (221), a second connecting plate (222), a driving motor (223), a driving pulley (224), a driving belt (225) and a driven pulley (226); the first connecting plate (221) and the second connecting plate (222) are arranged opposite to each other and are respectively connected to the inner wall of the mating opening (11); the driving motor (223) is arranged on the first connecting plate (221); the driving pulley (224) and the driving motor (223) are transmission-connected; the driving belt (225) is sleeved on the circumferential outer sides of the driving pulley (224) and the driven pulley (226); and the driven pulley (226) is arranged on the first connecting plate (221).

8. The battery tab bending machine according to claim 7, characterized in that: The driving structure (22) further comprises a driving shaft (227), a driven shaft (228) and two groups of driven belts (229); the first end of the driving shaft (227) is connected to the driven pulley (226); the second end of the driving shaft (227) is rotatably arranged on the second connecting plate (222); the two groups of driven belts (229) are sleeved on the circumferential outer sides of the driving shaft (227) and the driven shaft (228); the circumferential outer sides of the driving shaft (227) and the driven shaft (228) are provided with gear teeth; the gear teeth are meshed with the belt teeth on the two groups of driven belts (229); the two ends of the driven shaft (228) are rotatably arranged on the first connecting plate (221) and the second connecting plate (222) respectively; the gear teeth on the driven shaft (228) are meshed with the belt teeth on the conveying belt (211) to drive the conveying belt (211).

9. The battery tab bending machine according to any one of claims 1 to 4, characterized in that: The battery tab bending machine further comprises a control component (50), wherein the control component (50) comprises a PLC controller and two groups of on-board sensors (51), wherein the two groups of on-board sensors (51) are both arranged on the support platform (10), and the two groups of on-board sensors (51) are respectively arranged corresponding to the first bending structure (31) and the second bending structure (41), and the two groups of on-board sensors (51) are both electrically connected to the PLC controller, and the conveying component (20), the first bending component (30) and the second bending component (40) are all electrically connected to the PLC controller.

10. A battery tab bending method, characterized in that: The battery tab bending method adopts the battery tab bending machine according to any one of claims 1 to 9, and the battery tab bending method comprises the following steps: The working platform (212) moves under the drive of the conveying belt (211), so that the battery sheet (100) is located below the first bending assembly (30); The first limiting structure (32) limits the position of the battery sheet (100), and the first bending structure (31) pre-bends the battery tab (101); The working platform (212) continues to move under the drive of the conveying belt (211), so that the battery sheet (100) is located below the second bending assembly (40); The second limiting structure (42) limits the position of the battery sheet (100), and the second bending structure (41) bends the battery tab (101) into shape.

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