Battery cell tab cutting device

Abstract

The utility model relates to the technical field of battery production, and discloses a battery cell tab cutting device which comprises a base and a support installed on the base. The upper cutter mechanism comprises a first driving assembly, a transmission assembly, a middle connecting piece and an upper cutter, the first driving assembly comprises a driving part and an output shaft connected with the driving part, the length of the output shaft extends in the X direction, the output shaft is connected with the transmission assembly, and the transmission assembly is connected with the upper cutter through the middle connecting piece; the first driving assembly can drive the output shaft to drive the transmission assembly, the middle connecting piece and the upper cutter to move up and down in the Z direction. And the lower cutter mechanism comprises a second driving assembly and a lower cutter which are installed on the support, the lower cutter is located below the upper cutter, the second driving assembly is installed on the base and is in transmission connection with the lower cutter, and the second driving assembly can drive the lower cutter to move up and down in the Z direction. When the battery cell tab cutting device is used for cutting tabs, the flatness of notches of the battery cell tabs can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field especially relates to a kind of battery cell tab cutting device. BACKGROUND

[0002] When manufacturing lithium battery, the tab of single battery cell needs to be cut. In the prior art, the tab is generally cut by upper cutter and lower cutter. The conventional upper cutter is directly driven by shaft to press down. The upper cutter and lower cutter are not stressed evenly when cutting, and the tab is thin, so the cut tab is prone to be inclined and uneven, which affects the appearance of the tab and subsequent processing. SUMMARY

[0003] The utility model embodiment aims to provide a kind of battery cell tab cutting device, which can improve the flatness of battery cell tab cut.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A kind of battery cell tab cutting device is provided, comprising:

[0006] A base and a support are provided, wherein the support is mounted on the base;

[0007] An upper cutter mechanism is provided, comprising a first drive assembly mounted on the support, a transmission assembly, an intermediate connecting piece and an upper cutter. The first drive assembly comprises a driving portion mounted on the support and an output shaft in transmission connection with the driving portion. The length of the output shaft extends along the X direction. The output shaft is connected with the transmission assembly. The transmission assembly is connected with the upper cutter through the intermediate connecting piece. The first drive assembly can drive the output shaft to move the transmission assembly, the intermediate connecting piece and the upper cutter up and down along the Z direction.

[0008] A lower cutter mechanism is provided, comprising a second drive assembly mounted on the support and a lower cutter. The lower cutter is located below the upper cutter. The second drive assembly is mounted on the base and in transmission connection with the lower cutter. The second drive assembly can drive the lower cutter to move up and down along the Z direction.

[0009] When the upper cutter and the lower cutter cut the tab of battery cell, the cutting edge surface of the upper cutter and the cutting edge surface of the lower cutter are in contact along the X direction. The X direction is perpendicular to the Z direction.

[0010] As a further scheme of the electrode tab cutting device, the transmission assembly further comprises a bearing, a transmission wheel, a transmission connecting part and a connecting rod, the transmission wheel is installed on the inner periphery of the bearing, the output shaft is eccentrically connected with the transmission wheel, the transmission connecting part is fixedly connected with the outer periphery of the bearing, the axis of the transmission wheel and the length of the connecting rod extend along the X direction, the transmission connecting part is connected with the intermediate connecting piece through the connecting rod, and the driving part can drive the output shaft to rotate to drive the transmission assembly, the intermediate connecting piece and the upper cutter to move up and down along the Z direction.

[0011] As a further scheme of the electrode tab cutting device, the bracket comprises two first side plates and a first base plate, the two first side plates are fixedly spaced apart on the base along the Y direction, the first base plate is fixedly connected with the upper ends of the two first side plates, the driving part is installed on the first base plate, the first base plate is provided with a first avoiding hole for the transmission connecting part to pass through, and the X direction, the Y direction and the Z direction are perpendicular to each other.

[0012] The electrode tab cutting device further comprises a sensor and a detection rod, the sensor is installed on the first base plate and located directly below the output shaft along the Z direction, and the detection rod is fixedly connected with the end of the output shaft away from the driving part; when the output shaft drives the detection rod to rotate to the position of the sensor, the distance between the upper side of the bearing and the axis of the output shaft is the smallest, the upper cutter moves to the position of the electrode tab to cut the electrode tab; when the output shaft drives the detection rod to rotate vertically upward, the distance between the upper side of the bearing and the axis of the output shaft is the largest, and the upper cutter is reset.

[0013] As a further scheme of the electrode tab cutting device, the intermediate connecting piece comprises a mounting frame, a connecting part, a second base plate, a fixed block, a plurality of first guide rods and a first spring corresponding to each first guide rod, the connecting rod is connected with the mounting frame, the second base plate is located below the first base plate, the mounting frame is connected with the second base plate through the connecting part, the upper cutter is installed at the bottom of the second base plate and located at the edge of the second base plate, the fixed block is located below the second base plate and connected with the second base plate through a plurality of first guide rods, the length of the first guide rod extends along the Z direction, the first spring is sleeved on the first guide rod and located between the second base plate and the fixed block, the first spring respectively abuts against the second base plate and the fixed block, the fixed block is provided with an avoiding slot for the upper cutter to pass through at one side along the X direction, when the second base plate drives the upper cutter and the fixed block to move along the Z direction towards the lower cutter, the fixed block compresses the first spring and abuts against the electrode tab on the lower cutter, the upper cutter passes through the fixed block and continues to move downward until the electrode tab is cut.

[0014] As a further scheme of the electrode tab cutting device, the bracket further comprises a second side plate, the second side plate is connected perpendicularly with the two first side plates, the intermediate connecting piece further comprises a first guide assembly playing a guiding role in the Z direction, and the mounting frame is connected slidingly with the second side plate through the first guide assembly.

[0015] As a further scheme of the electrode tab cutting device, the lower cutting knife mechanism further comprises a third base plate, a plurality of second guide rods and a second spring corresponding to the second guide rods, one end of the second guide rod is fixedly connected with the third base plate, the other end is provided through the second base plate, the second spring is sleeved on the second guide rod and located between the second base plate and the third base plate, the second spring is in abutment with the second base plate and the third base plate respectively, the lower cutting knife is mounted on the third base plate, and the second driving assembly is in transmission connection with the third base plate.

[0016] As a further scheme of the electrode tab cutting device, the lower cutting knife mechanism further comprises two third side plates and a second guide assembly playing a guiding role in the Z direction, the two third side plates are connected perpendicularly with two ends of the third base plate along the Y direction respectively, each third side plate is connected slidingly with the first side plate through a second guide assembly, the second driving assembly is located below the third base plate and is in transmission connection with the third base plate, and the second driving assembly can drive the third base plate to move the lower cutting knife along the Z direction.

[0017] As a further scheme of the electrode tab cutting device, a dust removal mechanism is further included, the dust removal mechanism comprises a dust removal machine, a connecting pipe and a dust removal cover, the dust removal machine is located below the base, the dust removal machine is connected with the dust removal cover through the connecting pipe, the connecting pipe is provided through the base, the dust removal cover is arranged below the third base plate, a dust removal opening of the dust removal cover faces the upper cutting knife, a plurality of passages are arranged at intervals in the upper cutting knife, each passage has at least two passage openings, and one of the passage openings is located on the bottom surface of the upper cutting knife.

[0018] As a further scheme of the electrode tab cutting device, an X-direction adjusting mechanism is further included, the X-direction adjusting mechanism comprises:

[0019] a mounting seat located below the base;

[0020] a third guide assembly playing a guiding role in the X direction, the third guide assembly is located between the mounting seat and the base, and the base is connected slidingly with the mounting seat through the third guide assembly;

[0021] a locking assembly for locking the mounting seat and the base.

[0022] As a further scheme of the electrode tab cutting device, the X-direction adjusting mechanism further comprises an X-direction adjusting assembly, the X-direction adjusting assembly comprises:

[0023] a screw rod and two mounting blocks, the two mounting blocks are fixed on the mounting base along the X direction, the screw rod is arranged through the two mounting blocks and can rotate relative to the mounting blocks, and the length of the screw rod extends along the X direction;

[0024] a connecting block located between the two mounting blocks and threadedly connected with the screw rod, and the upper end of the connecting block is fixedly connected with the bottom of the base;

[0025] a locking part mounted on the screw rod and used for selectively locking the screw rod.

[0026] Beneficial effects:

[0027] (1) When the driving part drives the output shaft to drive the transmission assembly, the intermediate connecting piece and the upper cutter to move up and down along the Z direction, since the length of the output shaft extends along the X direction, the driving part can drive the output shaft to rotate around the axis along the X direction or move along the X direction, and the rotation of the output shaft around the axis along the X direction or the movement of the output shaft along the X direction is converted into the up-and-down movement along the Z direction through the transmission assembly, so that the flatness of the electrode tab cutout can be improved compared with the traditional motor or cylinder directly driving the upper cutter to move up and down for cutting.

[0028] (2) By arranging a plurality of channels in the upper cutter and arranging one of the channel openings on the bottom surface of the upper cutter, the dust remover can remove the residues generated during the cutting of the electrode tab by the upper cutter, and the upper cutter and the lower cutter are provided with the anti-sticking cutter, so that the residues can be effectively prevented from being accumulated and adhered to the upper cutter and the lower cutter. BRIEF DESCRIPTION OF DRAWINGS

[0029] The utility model will be further described in detail below according to the drawings and embodiments.

[0030] Figure 1 It is a structure schematic view of the first visual angle of the electrode tab cutting device in the embodiments of the utility model.

[0031] Figure 2 It is a structure schematic view of the second visual angle of the electrode tab cutting device in the embodiments of the utility model.

[0032] Figure 3 It is a structure schematic view of the third visual angle of the electrode tab cutting device (without the dust removing mechanism, the X-direction adjusting mechanism and the base and part of the bracket) in the embodiments of the utility model.

[0033] Figure 4The structure schematic view of the upper cutting knife of the utility model.

[0034] Figure 5 The structure schematic view of the upper cutting knife of the utility model.

[0035] Figure 6 The structure schematic view of the X direction adjusting mechanism of the utility model.

[0036] In the figure,

[0037] 100, base;

[0038] 200, support; 210, first side plate; 220, first base plate; 221, first avoiding hole; 230, second side plate; 240, first fixing seat; 250, second fixing seat;

[0039] 300, upper cutting knife mechanism; 310, first driving assembly; 311, driving part; 312, output shaft; 320, transmission assembly; 321, bearing; 322, transmission wheel; 323, transmission connecting part; 324, connecting rod; 330, intermediate connecting piece; 331, mounting frame; 332, connecting part; 333, second base plate; 334, fixed block; 335, first guide rod; 336, first spring; 337, first guide assembly; 3371, first guide rail; 3372, first sliding block; 340, upper cutting knife; 341, passage opening;

[0040] 400, lower cutting knife mechanism; 410, second driving assembly; 411, cylinder body; 412, piston rod; 420, lower cutting knife; 430, third base plate; 440, second guide rod; 450, second spring; 460, third side plate; 470, second guide assembly; 471, second guide rail; 472, second sliding block;

[0041] 510, sensor; 520, detection rod;

[0042] 600, dust removal mechanism; 610, dust removal machine; 620, connecting pipe; 630, dust removal cover; 640, fixed part.

[0043] 700, X direction adjusting mechanism; 710, mounting seat; 720, third guide assembly; 721, third guide rail; 722, third sliding block; 730, locking assembly; 731, locking sheet; 732, fixed long hole; 740, X direction adjusting assembly; 741, screw rod; 742, mounting block; 743, connecting block; 744, locking part; 7441, lock seat; 7442, lock rod; 7443, wrench. DETAILED DESCRIPTION

[0044] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model embodiment will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0045] In the description of the utility model, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] In the utility model, unless explicitly defined and limited, the first feature "on" or "below" the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0047] In the description of the embodiment, if the terms "up", "down", "left", "right" and other orientation or position relationship appear, they are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second" and the like appear, they are only used to distinguish in description, and do not have special meanings.

[0048] As Figures 1 to 6 shown, the electrode tab cutting device of the embodiment comprises a base 100, a support 200, an upper cutter mechanism 300 and a lower cutter mechanism 400.

[0049] Among them, the support 200 is installed on the base 100;

[0050] The upper cutter mechanism 300 comprises a first driving assembly 310 mounted on the support 200, a transmission assembly 320, an intermediate connecting piece 330 and an upper cutter 340. The first driving assembly 310 comprises a driving part 311 mounted on the support 200 and an output shaft 312 in transmission connection with the driving part 311. The length of the output shaft 312 extends along the X direction. The output shaft 312 is connected with the transmission assembly 320. The transmission assembly 320 is connected with the upper cutter 340 through the intermediate connecting piece 330. The first driving assembly 310 can drive the output shaft 312 to drive the transmission assembly 320, the intermediate connecting piece 330 and the upper cutter 340 to move up and down along the Z direction.

[0051] The lower cutter mechanism 400 comprises a second driving assembly 410 and a lower cutter 420. The lower cutter 420 is located below the upper cutter 340. The second driving assembly 410 is mounted on the base 100 and is in transmission connection with the lower cutter 420. The second driving assembly 410 can drive the lower cutter 420 to move up and down along the Z direction.

[0052] When the upper cutter 340 and the lower cutter 420 cut the tab of the battery cell, the blade surface of the upper cutter 340 and the blade surface of the lower cutter 420 are in contact along the X direction. The X direction is perpendicular to the Z direction.

[0053] In the embodiment, when the driving part 311 drives the output shaft 312 to drive the transmission assembly 320, the intermediate connecting piece 330 and the upper cutter 340 to move up and down along the Z direction, the length of the output shaft 312 extends along the X direction. Therefore, the driving part 311 can drive the output shaft 312 to rotate around the axis along the X direction or move along the X direction. The rotation of the output shaft 312 around the axis along the X direction or the movement of the output shaft 312 along the X direction is converted into the up and down movement along the Z direction through the transmission assembly 320. Compared with the traditional motor or air cylinder directly driving the upper cutter 340 to move up and down through the driving shaft for cutting, the flatness of the cut of the tab of the battery cell can be improved.

[0054] Further, the transmission assembly 320 comprises a bearing 321, a transmission wheel 322, a transmission connecting part 323 and a connecting rod 324. The transmission wheel 322 is mounted on the inner periphery of the bearing 321. The output shaft 312 is eccentrically connected with the transmission wheel 322. The transmission connecting part 323 is fixedly connected with the outer periphery of the bearing 321. The axis of the transmission wheel 322 and the length of the connecting rod 324 extend along the X direction. The transmission connecting part 323 is connected with the intermediate connecting piece 330 through the connecting rod 324. The driving part 311 can drive the output shaft 312 to rotate. The X direction, the Y direction and the Z direction are perpendicular to each other.

[0055] It can be understood that when the driving part 311 drives the output shaft 312 to rotate, the output shaft 312 drives the transmission wheel 322 and the bearing 321 to rotate eccentrically, so that the transmission connecting part 323 drives the connecting rod 324 and the intermediate connecting piece 330 and the upper cutter 340 to move up and down, realizing the cutting of the electrode tab of the battery cell. In this embodiment, the rotation of the output shaft 312 around the X-direction axis is converted into the movement of the upper cutter 340 in the vertical direction (Z direction) by the transmission wheel 322 and the bearing 321, so that the downward pressure of the upper cutter 340 when cutting the electrode tab of the battery cell together with the lower cutter 420 is more gentle and stable.

[0056] Exemplarily, the driving part 311 is a motor, and the output shaft 312 is a screw rod. The driving shaft of the motor is connected with the screw rod through a shaft coupling to drive the screw rod to rotate.

[0057] Further, the bracket 200 includes two first side plates 210 and a first base plate 220. The two first side plates 210 are fixed on the base 100 along the Y direction at intervals, and the first base plate 220 is fixed on the upper ends of the two first side plates 210. The driving part 311 is installed on the first base plate 220, and the first base plate 220 is provided with a first avoiding hole 221 for the transmission connecting part 323 to pass through.

[0058] As Figure 3 , the battery cell electrode tab cutting device further includes a sensor 510 and a detection rod 520. The sensor 510 is installed on the first base plate 220 and located directly below the output shaft 312 along the Z direction. The detection rod 520 is fixedly connected with the end of the output shaft 312 away from the driving part 311. When the output shaft 312 drives the detection rod 520 to rotate to the position of the sensor 510, the distance between the upper side of the bearing 321 and the axis of the output shaft 312 is the smallest, and the upper cutter 340 moves to the position of the electrode tab of the battery cell to cut the electrode tab. When the output shaft 312 drives the detection rod 520 to rotate vertically upward, the distance between the upper side of the bearing 321 and the axis of the output shaft 312 is the largest, and the upper cutter 340 is reset.

[0059] In this embodiment, by installing the detection rod 520 on the end of the output shaft 312 and the sensor 510 on the first base plate 220, when the output shaft 312 rotates 180° forward, the detection rod 520 is located at the sensor 510, at this time the upper cutter 340 completes a cutting action. When the output shaft 312 continues to rotate 180° forward, the upper cutter 340 moves upward to reset. That is, the transmission wheel 322 can make the upper cutter 340 complete a cutting action every time it rotates one circle, and the sensor 510 can sense the number of rotations of the transmission wheel 322.

[0060] Exemplarily, the bracket 200 further comprises a first fixing seat 240 and two second fixing seats 250 fixed on the first base plate 220, the first fixing seat 240 and the two second fixing seats 250 are arranged at intervals along the X direction, the driving part 311, i.e. the motor, is installed on one side of the first fixing seat 240 along the X direction, the driving shaft of the motor is connected with the shaft coupling by penetrating through the first fixing seat 240, the two ends of the output shaft 312, i.e. the screw rod, are respectively connected with the second fixing seats 250 by penetrating through the second fixing seats 250, the shaft coupling is located between the first fixing seat 240 and the second fixing seat 250 adjacent to the first fixing seat 240, the transmission wheel 322 and the bearing 321 are located between the two second fixing seats 250, the transmission wheel 322 is fixedly connected with the screw rod, and the first avoiding hole 221 is located on the first base plate 220 between the two second fixing seats 250.

[0061] Further, the sensor 510 is installed on the second fixing seat 250 located on the outer side and away from the transmission wheel 322. The second fixing seat 250 is provided with a first guiding part playing a guiding role along the Y direction, the sensor 510 is provided with a second guiding part on the side facing the second fixing seat 250, the first guiding part is provided with a sliding groove extending along the Y direction in length, the second guiding part is provided with a sliding block on the side facing the sliding groove, and the sliding block is guided and matched with the sliding groove. The sensor 510 has a transmitting part and a receiving part, the transmitting part and the receiving part are arranged at intervals to form a sensing cavity, when the detection rod 520 rotates into the sensing cavity, the receiving part is blocked to receive the signal of the transmitting part, that is, the sensor 510 judges whether the cutting action of the electrode tab of the battery cell is completed by whether the receiving part receives the signal. The combined sensing technology of the sensor 510 and the detection rod 520 in the embodiment is a conventional technical means in the field, and details are not described herein.

[0062] Among them, the installation position of the sensor 510 is adjusted by pushing the second guiding part to slide along the first guiding part, and after the position is adjusted, the first guiding part and the second guiding part can be locked by a locking member such as a screw.

[0063] In this embodiment, the intermediate connecting piece 330 comprises a mounting frame 331, a connecting portion 332, a second base plate 333, a fixing block 334, a plurality of first guide rods 335 and a first spring 336 corresponding to each first guide rod 335, the connecting rod 324 is connected with the mounting frame 331, the second base plate 333 is located below the first base plate 220, the mounting frame 331 is connected with the second base plate 333 through the connecting portion 332, the upper cutter 340 is installed at the bottom of the second base plate 333 and located at the edge of the second base plate 333, the fixing block 334 is located below the second base plate 333 and connected with the second base plate 333 through the plurality of first guide rods 335, the length of the first guide rod 335 extends along the Z direction, the first spring 336 is sleeved on the first guide rod 335 and located between the second base plate 333 and the fixing block 334, the first spring 336 respectively abuts against the second base plate 333 and the fixing block 334, the fixing block 334 is provided with an avoiding slot at one side along the X direction for the upper cutter 340 to pass through, when the second base plate 333 drives the upper cutter 340 and the fixing block 334 to move along the Z direction towards the lower cutter 420, the fixing block 334 compresses the first spring 336 and abuts against the electrode tab of the battery cell on the lower cutter 420, the upper cutter 340 passes through the fixing block 334 and continues to move downward until cutting the electrode tab of the battery cell.

[0064] Exemplarily, the number of the first guide rods 335 is two, the two first guide rods 335 are symmetrically arranged at both ends of the fixing block 334 along the length direction thereof, one end of the first guide rod 335 away from the fixing block 334 is provided through the second base plate 333 and limited by the limiting portion arranged at the end of the first guide rod 335, so as to prevent the second base plate 333 from separating from the first guide rod 335.

[0065] Wherein, one end of the first guide rod 335 is fixedly connected with the fixing block 334, and the other end passes through the second base plate 333. When the motor drives the screw rod to rotate, the transmission wheel 322 drives the bearing 321 to drive the transmission connecting portion 323, the connecting rod 324 and the second base plate 333 to move downward, during the moving downward process, the fixing block 334 first contacts with the electrode tab of the battery cell, at this time, the second base plate 333 moves downward along the first guide rod 335 against the action force of the first spring 336, so that the fixing block 334 abuts against the electrode tab of the battery cell; when continuously moving downward, the upper cutter 340 drives the avoiding slot on one side of the fixing block 334 to continuously move downward, when the transmission wheel 322 rotates 180°, the upper cutter 340 is located at the cutting position, together with the lower cutter 420, the cutting action of the electrode tab of the battery cell is completed. During the cutting process, since the fixing block 334 abuts tightly the electrode tab of the battery cell on the lower cutter 420, the whole cutting action is more stable, and the cutting flatness and the aesthetic degree of the electrode tab of the battery cell can be further improved.

[0066] In order to make the up-down movement of the upper cutter 340 more stable, the first guide assembly 337 is additionally arranged in the embodiment. Specifically, the support 200 further comprises a second side plate 230 which is connected perpendicularly to the two first side plates 210, and the intermediate connecting piece 330 further comprises the first guide assembly 337 which plays a guiding role in the Z direction, and the mounting frame 331 is slidingly connected to the second side plate 230 through the first guide assembly 337, so that the guiding of the upper cutter 340 in the Z direction can be realized.

[0067] Exemplarily, the first guide assembly 337 comprises two first guide rails 3371 which are spaced apart in the Y direction and are arranged on the second side plate 230, and two first sliding blocks 3372 which are arranged on one side of the mounting frame 331 in one-to-one correspondence with the first guide rails 3371, the first sliding blocks 3372 are provided with sliding grooves which are slidingly matched with the first guide rails 3371, and the length of the first guide rails 3371 extends in the Z direction, so that the guiding of the upper cutter 340 in the Z direction is realized through the sliding cooperation of the first sliding blocks 3372 and the first guide rails 3371 in the Z direction.

[0068] Further, the lower cutter mechanism 400 further comprises a third base plate 430, a plurality of second guide rods 440 and a second spring 450 corresponding to the second guide rods 440, one end of the second guide rod 440 is fixedly connected to the third base plate 430, the other end is arranged through the second base plate 333, the second spring 450 is sleeved on the second guide rod 440 and located between the second base plate 333 and the third base plate 430, the second spring 450 abuts against the second base plate 333 and the third base plate 430 respectively, the lower cutter 420 is installed on the third base plate 430, and the second driving assembly 410 is drivingly connected to the third base plate 430.

[0069] Exemplarily, the number of the second guide rods 440 is four, and the four second guide rods 440 are symmetrically arranged at the four corners of the third base plate 430, the second guide rod 440 is arranged through the second base plate 333 and is limited by the limiting portion arranged at the end of the second guide rod 440 away from the third base plate 430, so as to prevent the second guide rod 440 from being separated from the second base plate 333.

[0070] Among them, the second driving assembly 410 can drive the third base plate 430 to move the lower cutter 420 up and down against the action force of the second spring 450, and the second guide rod 440 plays a buffering role for the up-down movement of the lower cutter 420.

[0071] Further, in order to make the up-down movement of the lower cutting knife 420 more stable, the lower cutting knife mechanism 400 of the embodiment further adds two third side plates 460 and a second guiding assembly 470 which plays a guiding role in the Z direction. The two third side plates 460 are respectively connected perpendicularly to the two ends of the third base plate 430 along the Y direction, and each third side plate 460 is slidingly connected to the first side plate 210 through a second guiding assembly 470. The second driving assembly 410 is located below the third base plate 430 and is drivingly connected to the third base plate 430. The second driving assembly 410 can drive the third base plate 430 to move along the Z direction.

[0072] The second guiding assembly 470 guides the movement of the lower cutting knife 420 along the Z direction, so that the movement of the lower cutting knife 420 along the Z direction is more stable.

[0073] For example, the second guiding assembly 470 includes a second guide rail 471 and a second sliding block 472. Each first side plate 210 has one second guide rail 471 installed on the side facing the third side plate 460. The third side plate 460 has a second sliding block 472 installed on the side facing the first side plate 210. The second sliding block 472 is provided with a sliding groove slidingly matched with the second guide rail 471. The length of the second guide rail 471 extends along the Z direction. Through the sliding cooperation of the second guide rail 471 and the second sliding block 472, the guiding movement of the lower cutting knife 420 along the Z direction is realized.

[0074] As shown in Figure 4 , the second driving assembly 410 includes a cylinder body 411 and a piston rod 412. The cylinder body 411 is fixed on the base 100. The cylinder body 411 is drivingly connected to the third base plate 430 through the piston rod 412.

[0075] Of course, the second driving assembly 410 is not limited to the cylinder structure. In other embodiments, it can also be a linear motor. The linear motor is drivingly connected to the third base plate 430 through its driving shaft. Details are not described herein.

[0076] Further, as shown in Figure 1 , Figure 2 and Figure 5 , the battery cell tab cutting device of the embodiment further includes a dust removal mechanism 600. The dust removal mechanism 600 includes a dust removal machine 610, a connecting pipe 620 and a dust removal cover 630. The dust removal machine 610 is located below the base 100. The dust removal machine 610 is connected to the dust removal cover 630 through the connecting pipe 620. The connecting pipe 620 penetrates the base 100. The dust removal cover 630 is arranged below the third base plate 430. The dust removal port of the dust removal cover 630 faces the upper cutting knife 340. The upper cutting knife 340 is provided with a plurality of passages. Each passage has at least two passage openings 341. One of the passage openings 341 is located on the bottom surface of the upper cutting knife 340.

[0077] By opening multiple channels inside the upper cutter 340, and one of the channel openings 341 is located at the bottom surface of the upper cutter 340, and the dust removal port of the dust removal cover 630 faces the upper cutter 340, when the dust removal machine 610 is working, the airflow generated in the channel of the upper cutter 340 will carry away the residues generated during the cutting process.

[0078] As shown in Figure 5 The bottom surface of the upper cutter 340 and the two side surfaces of the upper cutter 340 along the X direction are both provided with channel openings 341 that are in communication with the internal channels.

[0079] In order to prevent the connection pipe 620 and the dust removal cover 630 from shaking during the dust removal process and affecting the dust removal effect, the present embodiment further provides a fixing portion 640 around the outer periphery of the connection pipe 620, and the fixing portion 640 is fixedly connected with the bottom of the base 100.

[0080] Further, the electrode tab cutting device of the present embodiment further comprises an X-direction adjusting mechanism 700, as shown in Figure 6 The X-direction adjusting mechanism 700 comprises a mounting seat 710, a third guide assembly 720 and a locking assembly 730.

[0081] The mounting seat 710 is located below the base 100;

[0082] The third guide assembly 720 plays a guiding role along the X direction, and the third guide assembly 720 is located between the mounting seat 710 and the base 100, and the base 100 is slidingly connected with the mounting seat 710 through the third guide assembly 720;

[0083] The locking assembly 730 is used for locking the mounting seat 710 and the base 100.

[0084] By setting the third guide assembly 720 between the mounting seat 710 and the base 100, the base 100 and the bracket 200, the upper cutter mechanism 300 and the lower cutter mechanism 400 installed on the base 100 are pushed to move together along the X direction, so that the electrode tab placed on the jig is just located on the lower cutter 420, and the electrode tab cutting position is aligned with the cutting edge of the lower cutter 420. After the position is adjusted, it can be locked by the locking assembly 730, so as to avoid the movement of the electrode tab cutting device during the cutting process and affect the flatness of the electrode tab cutout.

[0085] Exemplarily, the locking assembly 730 includes four locking pieces 731, two locking pieces 731 are fixedly connected to the two sides of the base 100 along the Y direction respectively, a fixed long hole 732 is formed on the locking piece 731, the length of the fixed long hole 732 extends along the X direction, a plurality of threaded holes are formed on the two sides of the mounting seat 710 along the Y direction, and the threaded holes are spaced apart, after the positions of the lower cutter 420 and the upper cutter 340 along the X direction are adjusted by pushing the base 100, the fixed long hole 732 is screwed into the corresponding threaded hole through the screw, so as to realize the locking of the mounting seat 710 and the base 100.

[0086] The third guide assembly 720 includes two third guide rails 721 and two third sliding blocks 722, the two third guide rails 721 are fixed on the mounting seat 710 along the Y direction, the length of the third guide rail 721 extends along the X direction, the two third sliding blocks 722 are fixed on the bottom of the base 100 along the Y direction, the third sliding block 722 is provided with a sliding groove matched with the third guide rail 721, and the movement of the base 100 along the X direction is realized through the sliding cooperation of the third sliding block 722 and the third guide rail 721.

[0087] Further, the X-direction adjusting mechanism 700 further includes an X-direction adjusting assembly 740, and the X-direction adjusting assembly 740 includes a screw rod 741, a mounting block 742, a connecting block 743 and a locking part 744.

[0088] The number of the mounting block 742 is two, the two mounting blocks 742 are fixed on the mounting seat 710 along the X direction, the screw rod 741 is arranged in the two mounting blocks 742 and can rotate relative to the mounting block 742, and the length of the screw rod 741 extends along the X direction.

[0089] The connecting block 743 is located between the two mounting blocks 742 and is threadedly connected with the screw rod 741, and the upper end of the connecting block 743 is fixedly connected with the bottom of the base 100.

[0090] The locking part 744 is installed on the screw rod 741 and is used for selectively locking the screw rod 741.

[0091] Rotating the screw rod 741 can drive the connecting block 743 to move the base 100 along the X direction, after the position is adjusted, the screw rod 741 is locked by the locking part 744 on the screw rod 741, so as to limit the screw rod 741 from continuing to rotate. Then the base 100 is locked and fixed by the locking assembly 730.

[0092] The screw 741 is provided with a knob at one end, the locking part 744 further comprises a locking seat 7441, a locking rod 7442 and a wrench 7443, the locking seat 7441 is fixed on the mounting seat 710, the locking seat 7441 is provided with a mounting hole and a through hole (not shown in the figure) for the screw 741, the mounting hole is in communication with the through hole, the locking rod 7442 is screwed with the mounting hole, one end of the locking rod 7442 is fixedly connected with the wrench 7443, the other end is screwed into the mounting hole, and the locking rod 7442 can be rotated in the mounting hole by rotating the wrench 7443. When the position adjustment of the base 100 is completed, the locking rod 7442 is abutted with the screw 741 in the through hole by rotating the wrench 7443, so as to limit the screw 741 from continuing to rotate. In the embodiment, the locking part 744 plays a role of pre-locking.

[0093] In the embodiment, the upper cutter 340 and the lower cutter 420 are anti-sticking cutters, and the tab can be prevented from being adhered to the upper cutter 340 and the lower cutter 420 in the cutting process, so that the tab is not damaged.

[0094] The working process of the cell tab cutting mechanism is as follows: after the positions of the base 100, the upper cutter 340 and the lower cutter 420 are adjusted by the X-direction adjusting assembly 740, the wrench 7443 is rotated to lock the screw 741, and then the four locking pieces 731 are locked by screws, so that the base 100 is fixed relative to the mounting seat 710. The cell is placed on the jig and transmitted to the cell tab cutting device, at this time, the cylinder body 411 is started, the third base plate 430 and the lower cutter 420 are driven to rise by the piston rod 412 to contact the tab of the cell. The motor is started to rotate the transmission wheel 322, when the transmission wheel 322 rotates by 180 degrees, the transmission wheel 322 drives the connecting rod 324 to descend along the first guide rail 3371 and drives the upper cutter 340 and the fixed block 334 to descend, when descending, the fixed block 334 first contacts the tab of the cell and makes the first spring 336 be pressed to fix the tab, and then the upper cutter 340 descends together with the lower cutter 420 to cut the tab flat, when the transmission wheel 322 rotates by 180 degrees again, the transmission wheel 322 drives the connecting rod 324 to ascend along the first guide rail 3371 with the upper cutter 340 and the fixed block 334, so that the transmission wheel 322 rotates by 360 degrees to make the upper cutter 340 complete the whole cutting positioning action, and the sensor 510 senses the number of rotations. The dust removal mechanism 600 removes dust during the cutting process, after the cutting is completed, the second driving assembly 410 (cylinder) is started to drive the lower cutter 420 to descend along the second guide rail 471, and then the cell is transmitted to the next station along the transmission line; after the actions of the mechanisms are completed, the initial states are restored.

[0095] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some or all of the technical features therein. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrode tab trimming apparatus, comprising: The application relates to an electric core tab cutting device. The device comprises a base and a support installed on the base; an upper cutter mechanism comprising a first driving assembly installed on the support, a transmission assembly, an intermediate connecting piece and an upper cutter, the first driving assembly comprising a driving part installed on the support and an output shaft in transmission connection with the driving part, the length of the output shaft extending along an X direction, the output shaft being connected with the transmission assembly, the transmission assembly being connected with the upper cutter through the intermediate connecting piece, the first driving assembly being capable of driving the output shaft to move the transmission assembly, the intermediate connecting piece and the upper cutter up and down along a Z direction; and a lower cutter mechanism comprising a second driving assembly installed on the support and a lower cutter, the lower cutter being located below the upper cutter, the second driving assembly being installed on the base and in transmission connection with the lower cutter, the second driving assembly being capable of driving the lower cutter to move up and down along the Z direction. When the upper cutter and the lower cutter cut the electric core tab, the blade surface of the upper cutter is in close contact with the blade surface of the lower cutter along the X direction, and the X direction is perpendicular to the Z direction. The transmission assembly further comprises a bearing, a transmission wheel, a transmission connecting part and a connecting rod, the transmission wheel being installed on the inner periphery of the bearing, the output shaft being eccentrically connected with the transmission wheel, the transmission connecting part being fixedly connected with the outer periphery of the bearing, the axis of the transmission wheel and the length of the connecting rod extending along the X direction, the transmission connecting part being connected with the intermediate connecting piece through the connecting rod, and the driving part being capable of driving the output shaft to rotate so as to drive the transmission assembly, the intermediate connecting piece and the upper cutter to move up and down along the Z direction. The support comprises two first side plates and a first base plate, the two first side plates being fixedly spaced apart along a Y direction on the base, the first base plate being fixedly connected with the upper ends of the two first side plates, the driving part being installed on the first base plate, the first base plate being provided with a first avoiding hole for the transmission connecting part to pass through, and the X direction, the Y direction and the Z direction being perpendicular to each other.

2. The battery cell tab trimming apparatus of claim 1, wherein, The electric core tab cutting device further comprises a sensor and a detection rod, the sensor being installed on the first base plate and located directly below the output shaft along the Z direction, and the detection rod being fixedly connected with the end of the output shaft away from the driving part; when the output shaft drives the detection rod to rotate to the position of the sensor, the distance between the upper side of the bearing and the axis of the output shaft is the smallest, the upper cutter moves to the position of the electric core tab to cut the electric core tab; when the output shaft drives the detection rod to rotate vertically upward, the distance between the upper side of the bearing and the axis of the output shaft is the largest, and the upper cutter is reset.

3. The electrochemical cell tab trimming apparatus of claim 2, wherein, ​ ​ 4. The electrochemical cell tab trimming apparatus of claim 3, wherein, The intermediate connecting piece comprises a mounting frame, a connecting part, a second base plate, a fixing block, a plurality of first guide rods and a first spring corresponding to each of the first guide rods, the connecting rod is connected with the mounting frame, the second base plate is located below the first base plate, the mounting frame is connected with the second base plate through the connecting part, the upper cutter is installed at the bottom of the second base plate and located at the edge of the second base plate, the fixing block is located below the second base plate and connected with the second base plate through a plurality of first guide rods, the length of the first guide rod extends along the Z direction, the first spring is sleeved on the first guide rod and located between the second base plate and the fixing block, the first spring abuts against the second base plate and the fixing block respectively, the fixing block is provided with a avoiding slot for the upper cutter to pass through on one side along the X direction, when the second base plate drives the upper cutter and the fixing block to move along the Z direction towards the lower cutter, the fixing block compresses the first spring and abuts against the electrode tab of the lower cutter, the upper cutter passes through the fixing block and continues to move downward until the electrode tab of the battery is cut.

5. The electrochemical cell tab trimming apparatus of claim 4, wherein, The bracket further comprises a second side plate, the second side plate is connected with the two first side plates perpendicularly, the intermediate connecting piece further comprises a first guide assembly for guiding along the Z direction, the mounting frame is connected with the second side plate slidingly through the first guide assembly.

6. The electrochemical cell tab trimming apparatus of claim 4, wherein, The lower cutter mechanism further comprises a third base plate, a plurality of second guide rods and a second spring corresponding to each of the second guide rods, one end of the second guide rod is fixedly connected with the third base plate, the other end penetrates the second base plate, the second spring is sleeved on the second guide rod and located between the second base plate and the third base plate, the second spring abuts against the second base plate and the third base plate respectively, the lower cutter is installed on the third base plate, the second driving assembly is drivingly connected with the third base plate.

7. The electrochemical cell tab trimming apparatus of claim 6, wherein, The lower cutter mechanism further comprises two third side plates and a second guide assembly for guiding along the Z direction, the two third side plates are respectively connected with the two ends of the third base plate along the Y direction perpendicularly, each third side plate is connected with the first side plate slidingly through a second guide assembly, the second driving assembly is located below the third base plate and drivingly connected with the third base plate, the second driving assembly can drive the third base plate to move along the Z direction with the lower cutter.

8. The electrochemical cell tab trimming apparatus of claim 6, wherein, Further comprising a dust removal mechanism, the dust removal mechanism comprises a dust removal machine, a connecting pipe and a dust removal cover, the dust removal machine is located below the base, the dust removal machine is connected with the dust removal cover through the connecting pipe, the connecting pipe penetrates the base, the dust removal cover is arranged below the third base plate, the dust removal port of the dust removal cover faces the upper cutter, a plurality of passages are arranged in the upper cutter, each passage has at least two passage ports, one of the passage ports is located on the bottom surface of the upper cutter.

9. The electrochemical cell tab cutting apparatus of any one of claims 1 to 8, wherein, Further comprising an X-direction adjusting mechanism, the X-direction adjusting mechanism comprises: a mounting seat located below the base; A third guide assembly is arranged between the mounting base and the base for guiding the base to slide along the X direction relative to the mounting base; A locking assembly is arranged for locking the mounting base and the base.

10. The electrochemical cell tab trimming apparatus of claim 9, wherein, The X direction adjusting mechanism further comprises an X direction adjusting assembly, which comprises: a screw rod and two mounting blocks, the two mounting blocks are fixed on the mounting base along the X direction, the screw rod is arranged in the two mounting blocks and can rotate relative to the mounting blocks, the length of the screw rod extends along the X direction; a connecting block is arranged between the two mounting blocks and is screwed with the screw rod, the upper end of the connecting block is fixedly connected with the bottom of the base; a locking part is arranged on the screw rod for selectively locking the screw rod.

Images