Fully automatic lithium battery cutting and stacking machine

Abstract

The present invention relates to the field of automation equipment technology, and in particular to a fully automatic lithium battery cutting and stacking machine. A stacking assembly is used to alternately stack positive and negative electrodes, and a diaphragm is attached between the positive and negative electrodes. A supporting beam is provided on the frame platform of the stacking assembly, and a stacking platform is provided on both sides of the supporting beam. The stacking platforms on both sides correspond to each other. Two preparatory stacking platforms are provided on both sides of the supporting beam. The two preparatory stacking platforms on the same side are located on both sides of the stacking platform on the same side, and the positions of the preparatory stacking platforms on both sides of the supporting beam correspond to each other. A rotating conveying platform is provided between the preparatory stacking platforms on both sides of the supporting beam. The rotating conveying platform is used to transport the electrodes on the electrode conveyor belt to the preparatory stacking platform. Compared with the prior art, the fully automatic lithium battery cutting and stacking machine of the present invention can greatly shorten the length of the equipment in the assembly line direction, save the space occupied by the equipment, make the equipment layout more reasonable, and reduce the equipment cost.

Description

[Technical field]

[0001] The present invention relates to the technical field of automation equipment, and in particular to a fully automatic lithium battery cutting and stacking machine. [Background technology]

[0002] The lithium battery cutting and stacking equipment in the prior art usually adopts a method of arranging multiple stacking stations along the direction of the assembly line to perform stacking operations in the stacking process. This structural mode can improve production efficiency to a certain extent, but it causes the overall size of the equipment to be relatively large, occupying a large production space, and each stacking station must be equipped with an independent robot to carry the pole pieces, which increases the equipment cost and is not conducive to the popularization and application of the equipment. [Summary of the invention]

[0003] In order to overcome the above problems, the present invention proposes a fully automatic lithium battery cutting and stacking machine that can effectively solve the above problems.

[0004] A technical solution provided by the present invention to solve the above-mentioned technical problems is: to provide a fully automatic lithium battery cutting and stacking machine, including a pole piece unwinding assembly, a cutting assembly and a stacking assembly, the pole piece unwinding assembly is used to release strip electrode materials, the cutting assembly is used to cut the strip electrode materials into pole pieces, the stacking assembly is used to alternately stack positive pole pieces and negative pole pieces, and attach a diaphragm between the positive pole pieces and the negative pole pieces; the stacking assembly includes a frame table, a supporting beam is arranged on the frame table, a stacking table is arranged on both sides of the supporting beam, the positions of the stacking tables on both sides correspond to each other, two preparatory stacking tables are arranged on both sides of the supporting beam, the two preparatory stacking tables on the same side are respectively located on both sides of the stacking table on the same side, and the positions of the preparatory stacking tables on both sides of the supporting beam correspond to each other one by one; a rotating conveying table is arranged between the preparatory stacking tables located on both sides of the supporting beam, and the rotating conveying table is used to convey the pole pieces on the pole piece conveyor belt to the preparatory stacking table.

[0005] Preferably, the two rotating transfer platforms are located below the supporting beam.

[0006] Preferably, stacking robots are respectively provided on both sides of the supporting crossbeam, and the stacking robots are used to transport the pole pieces from the preparatory stacking platform to the stacking platform for stacking.

[0007] Preferably, the rotary transport platform comprises a lifting cylinder and a rotating cylinder, the rotating cylinder is arranged above the lifting cylinder, the output end of the rotating cylinder is connected to a rotating plate, and two groups of vertical transport arms are arranged on the rotating plate.

[0008] Preferably, the transport arm comprises two parallel transport arms, and each transport arm is provided with a plurality of vacuum nozzles.

[0009] Preferably, the table top of the frame table is provided with two parallel electrode conveyor belts, which are used to transport positive electrode sheets and negative electrode sheets respectively; the directions of the two electrode conveyor belts are perpendicular to the direction of the supporting beam, the direction of the preparatory stacking table is parallel to the direction of the electrode conveyor belts, and the preparatory stacking table is located on the inner side of the electrode conveyor belts.

[0010] Preferably, a film stacking mechanism is provided on both sides of the supporting beam, and the film stacking mechanism is used to attach a diaphragm between the positive electrode sheet and the negative electrode sheet; horizontal slide rails are provided on both sides of the supporting beam, and the film stacking mechanism and the film stacking robot are slidably connected to the slide rails through sliders, and the film stacking mechanism and the film stacking robot can slide back and forth along the slide rails.

[0011] Preferably, the stacking robot includes a lifting module and a vacuum suction plate. The lifting module is slidably connected to the slide rail of the supporting beam through a slider, and the vacuum suction plate is slidably connected to the side of the lifting module. The lifting module controls the lifting and lowering of the vacuum suction plate, and the vacuum suction plate grabs the pole piece from the preparation stacking table and places it on the stacking table.

[0012] Preferably, a film supply bracket is arranged above the supporting crossbeam, and diaphragm unwinding assemblies are respectively arranged on both sides of the film supply bracket, and the diaphragm roll on each diaphragm unwinding assembly is connected to the film stacking mechanism below through a plurality of tensioning rollers.

[0013] Preferably, a film stacking roller is provided at the bottom of the film stacking mechanism, and the film stacking mechanism stacks the diaphragm between the pole pieces by moving back and forth, and the film stacking roller is used to flatten the diaphragm.

[0014] Compared with the prior art, the fully automatic lithium battery cutting and stacking machine of the present invention can greatly shorten the length of the equipment in the assembly line direction through rotating transportation, saving the space occupied by the equipment, and the two preparatory stacking tables can share a rotating transportation table, saving the number of transportation robots, making the equipment layout more reasonable, and reducing the equipment cost.

Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the fully automatic lithium battery cutting and stacking machine of the present invention;

[0016] Figure 2 It is a first stereoscopic view of the lamination assembly of the fully automatic lithium battery cutting and lamination machine of the present invention;

[0017] Figure 3 It is a second stereoscopic view of the lamination assembly of the fully automatic lithium battery cutting and lamination machine of the present invention;

[0018] Figure 4 A top view of the lamination assembly of the fully automatic lithium battery cutting and lamination machine of the present invention;

[0019] Figure 5It is a left view of the lamination assembly of the fully automatic lithium battery cutting and lamination machine of the present invention;

[0020] Figure 6 It is a right view of the lamination assembly of the fully automatic lithium battery cutting and lamination machine of the present invention. [Specific implementation method]

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] It should be noted that in the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back, etc.) are limited to relative positions on the specified view, rather than absolute positions.

[0023] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] See also Figures 1 to 6 The fully automatic lithium battery cutting and stacking machine of the present invention comprises a pole sheet unwinding assembly, a cutting assembly and a laminating assembly, wherein the pole sheet unwinding assembly is used to release strip electrode materials, the cutting assembly is used to cut the strip electrode materials into pole sheets, and the laminating assembly is used to alternately stack positive pole sheets and negative pole sheets, and attach a separator between the positive pole sheets and the negative pole sheets.

[0025] The number of the electrode unwinding assembly and the number of the cutting assembly are two, and the two electrode unwinding assemblies and the two cutting assemblies are arranged one by one. The corresponding electrode unwinding assemblies and the cutting assemblies are connected in series through a conveyor belt, and the conveyor belt is used to transmit electrode materials. One electrode unwinding assembly provides positive electrode materials, and the other electrode unwinding assembly provides negative electrode materials.

[0026] An outer round corner punching assembly is arranged between the pole piece unwinding assembly and the cutting assembly. The outer round corner punching assembly uses four sets of independent chamfering dies to punch and chamfer the four corners of the pole piece.

[0027] The lamination assembly includes a frame table 100 , and two parallel electrode sheet conveyor belts 400 are arranged on the table top of the frame table 100 . The two electrode sheet conveyor belts 400 are used to transport the positive electrode sheet and the negative electrode sheet respectively.

[0028] A supporting beam 200 is disposed on the frame platform 100 , and film stacking mechanisms 700 are disposed on both sides of the supporting beam 200 . The film stacking mechanisms 700 are used to attach a separator between the positive electrode sheet and the negative electrode sheet.

[0029] A stacking platform 600 is disposed below each of the two stacking mechanisms 700 , and the stacking platform 600 is used to alternately stack positive electrode sheets and negative electrode sheets.

[0030] The two sides of the stacking platform 600 are respectively provided with a preparatory stacking platform 500, and the preparatory stacking platform 500 is used to buffer the positive electrode sheets or negative electrode sheets to be stacked to ensure the continuous stacking operation.

[0031] Based on the above description, in the fully automatic lithium battery cutting and stacking machine of the present invention, a stacking platform 600 is respectively provided on both sides of the supporting beam 200, and the positions of the stacking platforms 600 on both sides correspond. Two preparatory stacking platforms 500 are respectively provided on both sides of the supporting beam 200, and the two preparatory stacking platforms 500 on the same side are respectively located on both sides of the stacking platform 600 on the same side, and the positions of the preparatory stacking platforms 500 on both sides of the supporting beam 200 correspond one to one.

[0032] A rotating transfer platform 300 is provided between the preparatory stacking platforms 500 located on both sides of the supporting beam 200, and the rotating transfer platform 300 is used to transfer the pole pieces on the pole piece conveyor belt 400 to the preparatory stacking platform 500. The rotating transfer method can greatly shorten the length of the equipment in the assembly line direction, save the space occupied by the equipment, and two preparatory stacking platforms 500 can share one rotating transfer platform 300, saving the number of transfer manipulators, making the equipment layout more reasonable, and reducing the equipment cost.

[0033] The two rotating transfer platforms 300 are located below the supporting beam 200 , and the space below the supporting beam 200 is utilized to further save the occupied space in the assembly line direction, thereby achieving more reasonable space utilization.

[0034] The two sides of the supporting beam 200 are respectively provided with stacking robots 900 , and the stacking robots 900 are used to transport the pole pieces from the preparatory stacking platform 500 to the stacking platform 600 for stacking.

[0035] A film supply bracket is disposed above the supporting crossbeam 200 , and a diaphragm unwinding assembly 800 is disposed on both sides of the film supply bracket. The diaphragm roll on each diaphragm unwinding assembly 800 is connected to the film stacking mechanism 700 below through a plurality of tensioning rollers.

[0036] The rotary transport platform 300 includes a lifting cylinder and a rotating cylinder. The rotating cylinder is arranged above the lifting cylinder. The output end of the rotating cylinder is connected to a rotating plate. Two sets of vertical transport arms are arranged on the rotating plate. During operation, after the lifting cylinder controls the transport arm to lift and grab the pole piece, the rotating cylinder controls the transport arm to rotate to the top of the preparatory stacking platform 500, and then descends to place the pole piece. The transport arm includes two parallel transport arms 310. Each transport arm 310 is provided with a plurality of vacuum nozzles 320. Each transport arm 310 can transport a pole piece alone. Therefore, one action of the rotary transport platform 300 can transport two pole pieces at the same time. Correspondingly, the preparatory stacking platform 500 includes two preparatory placement platforms, which can simultaneously carry two pole pieces transported by the rotary transport platform 300, further improving the stacking efficiency.

[0037] The direction of the two pole piece conveyor belts 400 is perpendicular to the direction of the supporting crossbeam 200, and the direction of the preparatory stacking platform 500 is parallel to the direction of the pole piece conveyor belt 400, and the preparatory stacking platform 500 is located on the inner side of the pole piece conveyor belt 400. In this way, each rotation of the rotating transfer platform 300 can be based on 90° as the standard, the angle control is more convenient, the transportation process is efficient and smooth, and it is conducive to improving the processing efficiency. The rotating transfer platform 300 is also located on the inner side of the pole piece conveyor belt 400. The belt of the pole piece conveyor belt 400 adopts the cylinder tensioning method, and the belt is equipped with two ribs. Each section of the belt is equipped with a brush assembly to clean the belt surface in time to prevent secondary pollution. The belt is equipped with a dust cover plate to prevent dust in the equipment from contaminating the pole piece. The single-sided support of the dust cover plate does not hinder the replacement of the belt.

[0038] Horizontal slide rails 210 are respectively provided on both sides of the supporting crossbeam 200, and the film stacking mechanism 700 and the film stacking robot 900 are both slidably connected to the slide rails 210 through sliders, and the film stacking mechanism 700 and the film stacking robot 900 can slide back and forth along the slide rails 210 under the action of the driving device. Two film stacking robots 900 are respectively provided on both sides of each film stacking mechanism 700, so there are four film stacking robots 900 on each side of the supporting crossbeam 200, so as to ensure that the pole pieces on the preparation stacking platform 500 are continuously transported to the stacking platform 600 for stacking, and ensure efficient operation. The stacking robot 900 includes a lifting module 910 and a vacuum suction plate 920. The lifting module 910 is slidably connected to the slide rail 210 of the supporting beam 200 through a slider. The vacuum suction plate 920 is slidably connected to the side of the lifting module 910. The lifting module 910 controls the lifting and lowering of the vacuum suction plate 920. The vacuum suction plate 920 grabs the pole piece from the preparatory stacking platform 500 and places it on the stacking platform 600.

[0039] A film stacking roller 710 is disposed at the bottom of the film stacking mechanism 700. The film stacking mechanism 700 stacks the diaphragm between the pole pieces by moving back and forth, and the film stacking roller 710 is used to flatten the diaphragm.

[0040] The fully automatic lithium battery cutting and stacking machine of the present invention also includes a gluing assembly, a QR code sticking assembly, a hot pressing assembly and a weighing and unloading assembly. The gluing assembly, the QR code sticking assembly, the hot pressing assembly and the weighing and unloading assembly are sequentially arranged behind the lamination assembly. The gluing assembly and the lamination assembly, the QR code sticking assembly and the gluing assembly, the hot pressing assembly and the QR code sticking assembly, and the weighing and unloading assembly and the hot pressing assembly are connected in series through a handling robot for product operation.

[0041] The glue sticking assembly is used for glue wrapping of battery cells. Each glue sticking assembly is equipped with two sets of glue sticking robots, which can apply two layers of glue at a time.

[0042] The QR code pasting component is used to paste the QR code tape on the battery cell. The QR code tape is fed as a roll, and the QR code pasting component cuts the tape to a fixed length by identifying the QR code position on the tape. Scan the code and confirm whether the QR code tape information is readable. The good QR code tape is pasted on the surface of the battery cell, and the bad QR code tape is discharged and not pasted. After the QR code tape is pasted, the QR code tape pasted on the surface of the battery cell is scanned again.

[0043] The hot pressing assembly uses a steel belt to press the battery cell, first pressing the pole piece, and then pressing the whole body after the unloading robot withdraws, so that the battery cell has no indentation. The steel belt on the contact surface between the hot pressing assembly and the battery cell is treated with anti-sticking to avoid damage to the diaphragm.

[0044] Compared with the prior art, the fully automatic lithium battery cutting and stacking machine of the present invention can greatly shorten the length of the equipment in the assembly line direction through rotating transportation, saving the space occupied by the equipment, and the two preparatory stacking tables 500 can share a rotating transportation table 300, saving the number of transportation robots, making the equipment layout more reasonable, and reducing the equipment cost.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any modifications, equivalent substitutions and improvements made within the concept of the present invention should be included in the patent protection scope of the present invention.

Claims

1. Fully automatic lithium battery cutting and stacking machine, It is characterized in that It includes a pole piece unwinding assembly, a cutting assembly and a laminating assembly, wherein the pole piece unwinding assembly is used to release the strip electrode material, the cutting assembly is used to cut the strip electrode material into pole pieces, the laminating assembly is used to alternately stack the positive pole pieces and the negative pole pieces, and a separator is attached between the positive pole pieces and the negative pole pieces; The lamination assembly comprises a frame platform, a supporting crossbeam is arranged on the frame platform, a lamination platform is arranged on both sides of the supporting crossbeam, the positions of the lamination platforms on both sides correspond to each other, two preparatory lamination platforms are arranged on both sides of the supporting crossbeam, the two preparatory lamination platforms on the same side are respectively located on both sides of the lamination platform on the same side, and the positions of the preparatory lamination platforms on both sides of the supporting crossbeam correspond to each other one by one; A rotating conveying platform is provided between the preparatory stacking platforms on both sides of the supporting crossbeam, and the rotating conveying platform is used to convey the pole pieces on the pole piece conveyor belt to the preparatory stacking platform; The rotary transport platform comprises a lifting cylinder and a rotating cylinder, wherein the rotating cylinder is arranged above the lifting cylinder, the output end of the rotating cylinder is connected to a rotating plate, and two sets of vertical transport arms are arranged on the rotating plate; The transport arm comprises two parallel transport arms, each of which is provided with a plurality of vacuum nozzles; The table top of the frame table is provided with two parallel electrode sheet conveyor belts, which are used to transport positive electrode sheets and negative electrode sheets respectively; the directions of the two electrode sheet conveyor belts are perpendicular to the direction of the supporting crossbeam, the direction of the preparatory stacking table is parallel to the direction of the electrode sheet conveyor belts, and the preparatory stacking table is located on the inner side of the electrode sheet conveyor belts; Both sides of the supporting crossbeam are provided with a film stacking mechanism, which is used to attach a diaphragm between the positive electrode sheet and the negative electrode sheet; both sides of the supporting crossbeam are provided with horizontal slide rails, and the film stacking mechanism and the film stacking manipulator are slidably connected to the slide rails through sliders, and the film stacking mechanism and the film stacking manipulator can slide back and forth along the slide rails; The stacking robot comprises a lifting module and a vacuum suction plate. The lifting module is slidably connected to the slide rail of the supporting beam through a slider. The vacuum suction plate is slidably connected to the side of the lifting module. The lifting module controls the lifting and lowering of the vacuum suction plate. The vacuum suction plate grabs the pole piece from the preparation stacking table and places it on the stacking table. A film supply bracket is arranged above the supporting crossbeam, and a diaphragm unwinding assembly is arranged on both sides of the film supply bracket, and the diaphragm roll on each diaphragm unwinding assembly is connected to the film stacking mechanism below through a plurality of tensioning rollers; A film stacking roller is provided at the bottom of the film stacking mechanism. The film stacking mechanism stacks the diaphragm between the pole pieces by moving back and forth, and the film stacking roller is used to flatten the diaphragm.

2. The fully automatic lithium battery cutting and stacking machine as claimed in claim 1, It is characterized in that The rotating transfer platform is located below the supporting crossbeam.

3. The fully automatic lithium battery cutting and stacking machine as claimed in claim 1, It is characterized in that The two sides of the supporting crossbeam are respectively provided with stacking robots, and the stacking robots are used to transport the pole pieces from the preparatory stacking platform to the stacking platform for stacking.

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