CN219435940U - Ultra-large size pole piece die cutting lamination roll welding all-in-one machine with pole piece size of 800mm x 1200mm - Google Patents

Abstract

The application relates to a pole piece size is 800mm 1200 mm's oversized pole piece cross cutting lamination roll welding all-in-one, include: a pole piece die cutting machine; the battery core lamination machine is connected with the pole piece die cutting machine; the welding machine is connected with the battery core lamination machine; the pole piece die cutting machines are provided with two groups, and the two groups of pole piece die cutting machines are respectively suitable for die cutting the positive pole piece and the negative pole piece; the battery cell lamination machine is characterized in that two sides of the battery cell lamination machine are provided with sheet inlet, the two sheet inlet and the sheet die-cutting machine are connected through a feeding belt, the positive sheet and the negative sheet which are well die-cut by the two groups of sheet die-cutting machines are conveyed to the battery cell lamination machine through the feeding belt to be laminated, and the welding machine is suitable for welding the battery cells and electrodes which are well stacked by the battery cell lamination machine to form a finished battery cell, so that the setting of the sheet die-cutting machines which can be respectively used for die-cutting the positive sheet and the negative sheet is adopted, the positive sheet and the negative sheet which are well die-cut can be directly conveyed to the battery cell lamination machine through the feeding belt to be laminated, the manual transfer process is reduced, and the high-efficiency production and manufacture of the battery cells are realized.

Description

Ultra-large size pole piece die cutting lamination roll welding all-in-one machine with pole piece size of 800mm x 1200mm

[ field of technology ]

The application relates to an oversized pole piece die cutting lamination roll welding all-in-one machine with the pole piece size of 800mm x 1200mm, and belongs to the technical field of power batteries.

[ background Art ]

At present, the lithium ion battery has the advantages of safety, high efficiency, no pollution, high specific energy, abundant raw materials, multiple recycling times, long storage time and the like, is widely applied to portable electronic equipment such as mobile phones, digital cameras and portable computers, and is widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like.

In the prior art, the process of the power battery in the manufacturing process is more dispersed, the middle of the power battery needs to be manually transported for many times, and the processing efficiency is low, so that the production efficiency of the whole battery core is reduced.

Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.

[ utility model ]

The utility model aims at providing a high-efficiency pole piece size is 800mm x 1200 mm's super large size pole piece cross cutting lamination roll welding all-in-one.

The purpose of the application is realized through the following technical scheme: an oversized pole piece die-cutting lamination roll welding all-in-one machine with pole piece size of 800mm x 1200mm, comprising:

a pole piece die cutting machine;

the battery core lamination machine is connected with the pole piece die cutting machine; and

the welding machine is connected with the battery core lamination machine;

the pole piece die cutting machines are provided with two groups, and the two groups of pole piece die cutting machines are respectively suitable for die cutting the positive pole piece and the negative pole piece; the battery cell lamination machine is characterized in that two sides of the battery cell lamination machine are provided with sheet inlet, the two sheet inlet and the pole piece die-cutting machine are connected through a feeding belt, the two groups of positive pole pieces and the negative pole pieces which are die-cut by the pole piece die-cutting machine are conveyed to the battery cell lamination machine through the feeding belt to be laminated, and the welding machine is suitable for welding the battery cells and the electrodes which are laminated by the battery cell lamination machine to form a finished battery cell.

Further, the pole piece die-cutting machine is provided with a pole piece discharging assembly, a punching assembly and a collecting assembly which are sequentially arranged along the moving direction of the conveying belt, and a pole piece roll is punched into a pole piece through the punching assembly after being placed on the pole piece discharging assembly and is collected by the collecting assembly;

the collecting assembly comprises a grabbing component arranged above the conveying belt and storage components arranged on two sides of the conveying belt, wherein each grabbing component comprises two groups of grabbing pieces which are respectively close to the storage components on two sides of the conveying belt, each grabbing piece is provided with a grabbing state for grabbing the pole piece and a placing state for placing the pole piece in the corresponding storage component, one grabbing piece is in the grabbing state, and the other grabbing piece is in the placing state.

Further, the grabbing piece comprises a grabbing plate and a plurality of sucking disc pieces uniformly arranged on the grabbing plate, and the sucking disc pieces have negative pressure to suck the pole pieces.

Further, the gripping member further comprises a negative pressure generating member in communication with the suction cup member, the negative pressure generating member being adapted to generate a negative pressure within the suction cup member.

Further, the collecting assembly further comprises a driving component connected with the grabbing component, and the driving component can drive the grabbing component to move between the storage component and the conveying belt along the extending direction of the connecting line between the two storage components.

Further, the pole piece discharging assembly comprises an air expansion shaft suitable for placing the pole piece material roll and a floating rod component arranged beside the air expansion shaft, and a pole piece belt extending out of the pole piece material roll passes through the floating rod component, enters the punching assembly for punching and is conveyed to the position of the sheet collecting assembly by the conveying belt.

Further, the punching assembly comprises a cutter rest arranged above the conveyor belt and a punching cutter arranged on the cutter rest;

the cutter rest is provided with a plurality of guide posts, and the punching cutter can move towards the direction of the pole piece belt on the conveyor belt, which is close to or far away from the guide posts, under the drive of external force.

Further, the battery cell lamination machine comprises a machine body, a diaphragm lamination assembly arranged on the machine body, and a positive plate material box and a negative plate material box which are respectively arranged on two sides of the diaphragm lamination assembly;

the diaphragm stacking assembly comprises a stacking groove and a stacking transfer piece arranged above the stacking groove, a diaphragm material roll is connected in the stacking groove, the stacking transfer piece is suitable for transferring positive plates and negative plates in the positive plate material box and the negative plate material box into the stacking groove, and Z-shaped process lamination is carried out according to modes of diaphragms, positive plates, diaphragms, negative plates, diaphragms, positive plates, diaphragms and negative plates.

Further, positioning groove components are arranged between the positive plate material box and the stacking groove and between the negative plate material box and the stacking groove;

the positive plate in the positive plate material box and the negative plate in the negative plate material box are respectively positioned by the positioning groove component under the transportation of the stacking transportation piece and then transported to the lamination groove by the stacking transportation piece for lamination.

Further, the welding machine comprises a welding table and an ultrasonic welding piece arranged beside the welding table;

the battery cell lamination machine stacks the battery cell and the electrode to be welded, the battery cell and the electrode to be welded are transported to the welding table through the moving trolley, and the ultrasonic welding piece can move relative to the welding table under the driving of external force so as to perform double-roll ultrasonic welding on the battery cell and the electrode to be welded.

Compared with the prior art, the application has the following beneficial effects: the whole continuous processing of the battery cells is realized through the pole piece die cutting machine, the battery cell lamination machine and the welding machine which are arranged continuously, and the pole piece die cutting machine is provided with two groups which are respectively suitable for die cutting the positive pole piece and the negative pole piece; the battery cell lamination machine is characterized in that two sides of the battery cell lamination machine are provided with sheet inlet, the two sheet inlet and the sheet die-cutting machine are connected through a feeding belt, the positive sheet and the negative sheet which are well die-cut by the two groups of sheet die-cutting machines are conveyed to the battery cell lamination machine through the feeding belt to be laminated, and the welding machine is suitable for welding the battery cells and electrodes which are well stacked by the battery cell lamination machine to form a finished battery cell, so that the positive sheet and the negative sheet which are well die-cut can be arranged through the two groups of sheet die-cutting machines which are respectively die-cut, the positive sheet and the negative sheet which are respectively die-cut can be directly conveyed to the battery cell lamination machine through the feeding belt to be laminated, the manual transfer process is reduced, and the high-efficiency production and manufacture of the battery cell are realized.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of an oversized pole piece die-cutting lamination roll-welding integrated machine with a pole piece size of 800mm x 1200mm in accordance with an embodiment of the present application;

FIG. 2 is a schematic view of the construction of the pole piece die cutter of the embodiment of FIG. 1;

FIG. 3 is a schematic view of another view of the embodiment of FIG. 2;

fig. 4 is a schematic diagram of the structure of the cell lamination machine 2 of the embodiment shown in fig. 1;

FIG. 5 is another view angle schematic of the embodiment of FIG. 4;

FIG. 6 is another view angle schematic diagram of the embodiment of FIG. 5;

FIG. 7 is a schematic view of the welder of the embodiment of FIG. 1;

fig. 8 is a schematic diagram of the structure of the battery cell after the rubberizing of the embodiment shown in fig. 1.

[ detailed description ] of the utility model

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 to 8, an oversized pole piece die cutting and lamination roll welding integrated machine with a pole piece size of 800mm x 1200mm in the embodiment of the present application includes a pole piece die cutting machine 1, a battery core lamination machine 2 and a welding machine 3. The electrode plate die cutting machine 1 is suitable for slicing the electrode plate material roll, the battery cell lamination machine 2 is suitable for laminating the electrode plate cut by the electrode plate die cutting machine 1 to form a laminated battery cell, and then the welding machine 3 is used for welding the laminated battery cell and the electrode, so that a finished battery cell is formed, and continuous production of a battery cell process is realized. In this embodiment, the size of the die-cut pole piece is 800mm x 1200mm, the thickness of the pole piece is 0.08 mm-0.25 mm, the length and width of the tab 7 on the pole piece is 30mm x 650mm, the angle of the tab 7 in the direction away from the pole piece is processed with an arc, the round angle R is 2mm, and the tab 7 of each pole piece is connected with the tail of the pole piece in front of the round angle R

In other embodiments, the die-cut pole piece may also have a size of 701mm×505mm, a thickness of 0.08 mm-0.25 mm, a length and width of the tab 7 on the pole piece is 30mm×350mm, an angle of the tab 7 in a direction away from the pole piece is subjected to arc treatment, a round angle R is 2mm, and the tab 7 of each pole piece is connected with the tail of the pole piece in front of the round angle R.

In the embodiment, the pole piece die cutting machine 1 is provided with two groups, and the two groups of pole piece die cutting machines 1 are respectively suitable for die cutting the positive pole piece and the negative pole piece. The two sides of the battery cell lamination machine 2 are provided with sheet inlet, the two sheet inlet and the pole piece die-cutting machine 1 are connected through the feeding belt 4, and the positive pole piece and the negative pole piece which are die-cut by the two groups of pole piece die-cutting machines 1 can be respectively conveyed into the battery cell lamination machine 2 through the feeding belt 4 to be laminated into the battery cell with stacked positive and negative pole pieces. And then the welding machine 3 can weld the battery cells and electrodes which are stacked by the battery cell lamination machine 2 to form a finished battery cell, so that the positive electrode plate and the negative electrode plate which are respectively die-cut can be directly conveyed to the battery cell lamination machine 2 for lamination through the feeding belt 4 by the two groups of the electrode plate die-cutting machines 1 which are respectively die-cut, the manual transfer process is reduced, and the high-efficiency production and manufacture of the battery cell are realized. The overall length, width and height dimensions of the pole piece die cutting machine are 5500mm x 2000mm x 1700mm.

Specifically, the pole piece die-cutting machine 1 is provided with a conveying belt 14, the conveying belt 14 is suitable for conveying pole piece belts for unwinding pole piece material rolls, the linear speed of the conveying belt 14 is 0.5m/s, and the pole piece die-cutting machine 1 is further provided with a pole piece discharging assembly 11, a punching assembly 12 and a collecting assembly 13 which are sequentially arranged along the moving direction of the conveying belt 14. The pole piece material rolls are placed on the pole piece discharging assembly 11 and then are unfolded to form pole piece strips, then the pole piece strips are transported to the punching assembly 12 by the conveying belt 14, punched into pole pieces by the punching assembly 12, and finally are collected by the collecting assembly 13, so that a certain number of pole pieces are accumulated and then enter the cell lamination machine 2 for lamination. In this embodiment, the pole piece roll may be a positive pole piece roll or a negative pole piece roll, according to actual processing requirements.

The take-up assembly 13 includes a gripping member 131 disposed above the conveyor belt 14 and a storage member 132 disposed on both sides of the conveyor belt 14. The storage component 132 is used for storing the punched pole piece of the punching component 12, the grabbing component 131 comprises two groups of grabbing pieces 1311 which are respectively close to the storage components 132 on two sides of the conveying belt 14, each group of grabbing pieces 1311 has a grabbing state for grabbing the pole piece and a placing state for placing the pole piece in the corresponding storage component 132, when one grabbing piece 1311 is in the grabbing state, the other grabbing piece 1311 is in the placing state, so that the two grabbing pieces 1311 can alternately grab the pole piece and place the pole piece, and the pole piece die-cutting machine 1 does not need to stop for waiting when the collecting component 13 collects the pole piece, so that the machining efficiency of the integrated machine is increased.

Specifically, the grabbing piece 1311 includes a grabbing plate 1312, and a plurality of sucking disc pieces 1313 uniformly arranged on the grabbing plate 1312, the grabbing plate 1312 can drive the sucking disc pieces 1313 above to move under the driving of an external force, when the grabbing piece 1311 is in a grabbing state, the sucking disc pieces 1313 are in contact with the pole piece, negative pressure can be generated in the sucking disc pieces 1313 so as to be adsorbed on the pole piece, then the grabbing plate 1312 moves towards the storage part 132 corresponding to the sucking disc pieces by the driving of the external force until reaching a preset position in the storage part 132, at this time, the grabbing piece 1311 is switched to a placing state, the negative pressure in the sucking disc pieces 1313 disappears, and the pole piece is separated from the grabbing piece 1311 and falls into the storage part 132 to finish collecting sheets.

The grasping member 131 further includes a negative pressure generating member in communication with the suction cup member 1313, which can generate a negative pressure to thereby generate a negative pressure in the suction cup member 1313 to realize the function of sucking the pole piece of the suction cup member 1313. In this embodiment, the negative pressure generating member is a negative pressure fan.

In order to realize the driving of the grabbing parts 131, in this embodiment, the film collecting assembly 13 further includes a driving part connected to the grabbing parts 131, and the telescopic end of the driving part stretches and contracts to drive the grabbing parts 131 connected to the telescopic end to move between the storage parts 132 and the conveying belt 14 along the extending direction of the connecting line between the two storage parts 132, so that two grabbing parts 1311 can move simultaneously through one driving part, and one grabbing part 1311 is in a placed state when the other grabbing part is in a grabbing state, thereby saving driving cost. In this embodiment, the driving member is one of a cylinder, an electric cylinder, or a hydraulic cylinder.

The storage part 132 is a storage tank, a plurality of guide posts 1321 are arranged in the storage tank, a containing space 1322 is formed between the guide posts 1321, and the pole pieces grabbed by the grabbing part 131 are separated from the grabbing part 131 and then guided into the containing space 1322 through the guide posts 1321 to be stored, so that the pole pieces can be stacked conveniently and neatly.

In the above, the pole piece discharging component 11 comprises an inflatable shaft 111 suitable for placing pole piece material rolls and a floating rod component 112 arranged beside the inflatable shaft 111, wherein the inflatable shaft 111 is a special winding and unwinding shaft, namely a shaft with a raised surface after high-pressure inflation, and a shaft with a quickly retracted surface part after deflation is beneficial to ensuring the parallelism of the pole piece material rolls during installation. In this embodiment, the pole piece belt extending from the pole piece material roll passes through the floating rod component 112, enters the punching component 12 for punching, is conveyed to the sheet collecting component 13 by the conveying belt 14, and can maintain a good tension state in the whole process of the whole processing process by the tension adjusting function of the floating rod component 112, so that the punching effect of the processing is ensured. The material of the floating rod member 112 is a non-metal material, so that the pole piece belt is ensured not to be polluted by metal scraps generated by abrasion of the floating rod member 112 when passing through the floating rod member 112 and rubbing against the floating rod member 112.

The punching assembly 12 comprises a knife rest 121 arranged above the conveyer belt 14 and a punching knife 122 arranged on the knife rest 121, wherein a plurality of guide posts 1211 are arranged on the knife rest 121, and the punching knife 122 can move towards the direction of the pole piece belt on the conveyer belt 14 which is close to or far away from the guide posts 1211 along the guiding direction of the guide posts 1211 under the driving of external force so as to cut off part of the pole piece belt to form a pole piece. In this embodiment, the punching speed of the punching blade 122 is 15-35 times/min, and the collecting speed of the grabbing component 131 is 15-35 times/min, which is the same as the punching speed of the punching blade 122, so as to ensure the consistency of the work. And the driving mode for driving the punching cutter 122 is four-bar driving, and the number of the guide posts 1211 is 8, so that the whole driving process of the punching cutter 122 is more stable, and the punching accuracy is ensured. Wherein, the edge burr of the formed pole piece is smaller than 0.015mm, the whole power of the whole pole piece die-cutting machine 1 is 10.0kw, the applicable voltage is AC380V + -10%, the air pressure required by the whole machine is about 0.5-0.7 Mpa, and the mass of the whole machine is about 4000kg.

It is noted that, in the embodiment of the present application, the automatic die locking device is further provided on the punching blade 122, the locking force thereof is uniform, the operation is simple and convenient, the handling is convenient, and the automatic die locking device can perform a rotation swing with a certain angle under the locking condition, so that the punching blade 122 can perform a certain amplitude adjustment. The automatic mode locking device is the mature prior art, and the specific structure and the setting mode are not repeated here.

The cell lamination machine 2 comprises a machine body 21, a diaphragm lamination assembly 22 arranged on the machine body 21, and a positive electrode sheet material box 23 and a negative electrode sheet material box 24 respectively arranged on two sides of the diaphragm lamination assembly 22. The positive electrode sheet in the positive electrode sheet material box 23 and the negative electrode sheet in the negative electrode sheet material box 24 are the positive electrode sheet and the negative electrode sheet which are punched and stored in the storage part 132 of the corresponding electrode sheet die-cutting machine 1, and are conveyed into the corresponding positive electrode sheet material box 23 and negative electrode sheet material box 24 under the transportation of the feeding belt 4. In the present embodiment, the length-width dimension of the positive electrode tab cartridge 23 is 1200×799mm, and the length-width dimension of the negative electrode tab cartridge 24 is 1200×800mm. In other embodiments, the length-width dimension of the positive electrode tab cartridge 23 may also be 700mm x 499mm, and the length-width dimension of the negative electrode tab cartridge 24 is 700mm x 500mm.

The membrane stacking assembly 22 comprises a stacking groove 221 and a stacking transfer piece 222 arranged above the stacking groove 221, wherein a membrane roll 223 is connected to the stacking groove 221, the stacking transfer piece 222 can move between the positive plate material box 23, the stacking groove 221, the negative plate material box 24 and the stacking groove 221, and grasp and transfer positive plates and negative plates in the positive plate material box 23 and the negative plate material box 24 into the stacking groove 221, and Z-shaped lamination is carried out according to a mode of a membrane, a positive plate, a membrane, a negative plate, a membrane, a positive plate, a membrane and a negative plate.

Specifically, the diaphragm material roll 223 is fixed above the stacking groove 221, the diaphragm sheet after the diaphragm material roll 223 is unfolded is firstly connected into the stacking groove 221 below, the stacking transfer piece 222 comprises two pole piece transfer pieces suitable for grabbing the positive pole piece and the negative pole piece respectively, and a poking rod for clamping the diaphragm sheet, when the pole piece transfer piece corresponding to the positive pole piece transfers the positive pole piece into the stacking groove 221, the poking rod drives the diaphragm sheet to move from one side close to the positive pole piece material box 23 to one side far away from the positive pole piece material box 23, so that a layer of diaphragm is paved in the stacking groove 221. Conversely, when the negative electrode piece is transferred into the material stacking groove 221 by the electrode piece transferring piece corresponding to the negative electrode piece, the poking rod drives the diaphragm piece to move from one side close to the negative electrode piece material box 24 to one side far away from the negative electrode piece material box 24, so that a layer of diaphragm is paved in the material stacking groove 221, and the Z-shaped process lamination of the battery cell is realized by reciprocating circulation. In this embodiment, the stacking transport member 222 has the same structure principle as the grabbing member 1311 described above, and will not be described herein. Wherein, the lamination precision requirement when laminating is: the alignment error of the diaphragm is +/-0.2 mm; the alignment error of the pole piece is +/-0.1 mm; the alignment precision of the pole piece and the diaphragm is +/-0.1 mm.

In order to enable the positioning of the positive plate and the negative plate of the lamination to be more accurate, in the embodiment, positioning groove components 25 are arranged between the positive plate material box 23 and the lamination groove 221 and between the negative plate material box 24 and the lamination groove 221, the positive plate in the positive plate material box 23 and the negative plate in the negative plate material box 24 are respectively positioned by the positioning groove components 25 under the transportation of the lamination transportation piece 222 and then transported to the lamination groove by the lamination transportation piece 222 for lamination, so that the positioning of the positive plate and the negative plate of the lamination is more accurate through the secondary positioning of the positioning groove components 25, the battery cell quality after lamination is better, and the requirement of lamination precision of equipment is realized.

Specifically, the positioning groove component 25 comprises a positioning groove and push plates arranged on two adjacent sides of the positioning groove, and the two push plates can move towards the side close to or far away from the positioning groove opposite to the positioning groove under the driving of external force, so that the secondary positioning of the positive plate and the negative plate placed in the positioning groove is realized, and the lamination effect is ensured.

It should be noted that, the bottoms of the positive electrode sheet material box 23 and the negative electrode sheet material box 24 can be lifted under the driving of an external force, specifically, after the stacking transport piece 222 grabs one positive electrode sheet or one negative electrode sheet, the bottoms of the positive electrode sheet material box 23 or the negative electrode sheet material box 24 can be lifted by one positive electrode sheet or one negative electrode sheet under the driving of the external force, so that the stacking transport piece 222 can grab the positive electrode sheet and the negative electrode sheet at the same height each time, and the lamination effect of the battery cell is ensured.

In this embodiment, detection components are disposed in the positive electrode sheet material box 23 and the negative electrode sheet material box 24, the detection components can detect whether a pole piece still remains in the positive electrode sheet material box 23 and the negative electrode sheet material box 24, in this embodiment, the detection components are ultrasonic sensors, whether a pole piece still exists in the positive electrode sheet material box 23 and the negative electrode sheet material box 24 is detected through different ultrasonic reactions of different materials, and after the detection components detect that the pole pieces in the positive electrode sheet material box 23 and the negative electrode sheet material box 24 are consumed, an alarm is given, the equipment is stopped, and a user is convenient to add the pole piece or overhaul the reason that the pole piece is not fed.

In order to prevent cross contamination of the positive and negative electrode sheets during lamination, in this embodiment, a dust-proof plate is further provided between the positive electrode sheet magazine 23 and the negative electrode sheet magazine 24 to prevent cross contamination of the positive and negative electrodes. And still be provided with burst brush and dust extraction in the both sides that anodal piece magazine 23 and negative pole piece magazine 24 are located, before fold material transfer piece 222 snatch the pole piece from anodal piece magazine 23 and negative pole piece magazine 24 in, use burst brush to sweep the dust on the pole piece under external force drive and absorb by dust extraction and collect, and then guarantee the quality of electric core after the lamination.

In other embodiments, the dust cleaning method may be selected according to the actual situation, so long as the actual requirement can be met, and the method is not specifically limited herein.

The diaphragm stacking assembly 22 further comprises a hot cutter and a mechanical arm, wherein the hot cutter and the mechanical arm are arranged above the stacking groove 221, after a group of battery cell laminations are completed, the diaphragm is cut off by the hot cutter, the battery cell is taken out of the stacking groove 221 by the mechanical arm and is transferred to a rubberizing platform of the machine body 21 for rubberizing operation, the rubberizing mechanism rubberizes the periphery of the battery cell, after rubberizing is completed, the battery cell moves onto the transfer table 26, the machine body 21 is provided with a sliding rail 211, the transfer table 26 is provided with a sliding groove 261, and the transfer table 26 is in sliding connection with the machine body 21 through the sliding groove 261 and the sliding rail 211, so that the transfer table 26 can slide on the machine body 21. In addition, the battery cell lamination machine 2 further comprises a transfer trolley 27, a sliding rail is also arranged on the transfer trolley 27, the sliding rail on the transfer trolley can be in butt joint with the sliding rail 211 of the machine body 21, so that the transfer trolley 26 can slide onto the transfer trolley 27, and the battery cell is transferred to the welding machine 3 through the transfer trolley 27 for welding operation.

The rubberizing platform includes by last movable platform that sets gradually down from top to bottom, with last movable platform be connected down movable platform and with the rotary drive part who is connected down movable platform, go up movable platform and can move down movable platform relatively under external force drive, lower movable platform can drive under rotary drive part's drive and go up movable platform and rotate together. Wherein, go up and move the platform and move down and exist between the platform and deposit the clearance, the electricity core is deposited to this clearance through electric core tong in, then go up the platform and move down and compress tightly the electricity core, then set up the rubberizing mechanism next door of rubberizing platform and carry out rubberizing to one side of electricity core, after one side rubberizing is accomplished, lower the platform and drive and go up the platform and rotate together under the drive of rotary driving part, and then drive the electricity core and rotate for rubberizing mechanism can carry out the rubberizing of dead angle not all around to the electricity core, rubberizing process realizes the full automatization.

The rubberizing mechanism comprises a rubberizing frame, a rubberizing cylinder and a rubberizing cylinder, wherein the rubberizing cylinder and the rubberizing cylinder are arranged on the rubberizing frame, the rubberizing cylinder is mounted on the rubberizing frame in a rolling mode, one end of a rubber strip 6 of a film is connected with the rubberizing cylinder, the rubber strip 6 can be pulled out under the pulling of the rubberizing cylinder, the telescopic end of the rubberizing cylinder is contacted with the non-adhesive surface of the rubber strip 6, the adhesive surface of the rubber strip 6 faces towards the direction of an electric core, the telescopic direction of the telescopic end of the rubberizing cylinder faces towards the direction of the side wall of the electric core close to or far away from the rubberizing platform, and when rubberizing is carried out, the telescopic end of the rubberizing cylinder stretches, so that the rubber strip 6 is driven to move towards the direction of the electric core until the side wall of the electric core is contacted with the electric core, and then the rubberizing cylinder continuously pulls the rubber strip 6 to continuously rubberize the side wall of the electric core. In the embodiment, the width of the adhesive tape 6 is 8 mm-30 mm, the length of the adhesive tape 6 is 30 mm-60 mm, and the adhesive tape sticking mode is automatic machine encapsulation.

Specifically, when rubberizing, at first paste the up end to the electric core with the one end of adhesive tape 6 along the thickness direction of electric core, later pulling adhesive tape 6 for adhesive tape 6 pastes the lateral wall of electric core, and the length of adhesive tape 6 exceeds the thickness of electric core, and the other end of adhesive tape 6 is pasted on the lower terminal surface of electric core at last, and the repetition multiunit is until pasting whole electric core.

It should be noted that, in the present embodiment, the number of adhesive tapes 6 on each side wall of the side walls where the two tabs 7 of the battery cell are located is two, and the number of adhesive tapes 6 on each side wall adjacent to the side wall where the tabs 7 are located is six.

In other embodiments, the number of the adhesive tapes 6 may be selected according to the actual requirement, so long as the actual requirement can be satisfied, and the method is not particularly limited herein.

The welding machine 3 comprises a welding table 31 and an ultrasonic welding piece 32 arranged beside the welding table 31, wherein a battery cell of a laminated sheet of the battery cell lamination machine 2 and an electrode to be welded are placed on the welding table 31 along with the transfer table 26, and the ultrasonic welding piece 32 can move relative to the welding table 31 under the driving of an external force so as to perform double-roll ultrasonic welding on the battery cell and the electrode to be welded to form a finished power battery. The welding mode of double-roll ultrasonic waves is firm in welding, low in internal resistance, free of false welding, free of vibration powder, free of diaphragm burning, free of insulating glue, free of vibration crack of the pole piece 7, the residual welding surface between metals reaches more than 80%, and the welding effect is better. In the embodiment, the welding head of the ultrasonic welding piece is made of high-speed steel, and the welding head has the characteristics of wear resistance, high temperature resistance, good toughness, high mechanical rigidity, small deformation after heat treatment, and high consistency of ultrasonic output frequency, so that the quality of a finished product of the battery can be further enhanced.

Specifically, the welding table 31 has an extending rail 311 connected to the rail 211 of the machine, and the transfer table 26 is moved to a predetermined position on the welding table 31 by the extending rail 311 after being slid out from the rail 211, so as to be ready for a subsequent welding process.

To sum up: the whole continuous processing of the battery cells is realized through the pole piece die cutting machine, the battery cell lamination machine and the welding machine which are arranged continuously, and the pole piece die cutting machine is provided with two groups which are respectively suitable for die cutting the positive pole piece and the negative pole piece; the battery cell lamination machine is characterized in that two sides of the battery cell lamination machine are provided with sheet inlet, the two sheet inlet and the sheet die-cutting machine are connected through a feeding belt, the positive sheet and the negative sheet which are well die-cut by the two groups of sheet die-cutting machines are conveyed to the battery cell lamination machine through the feeding belt to be laminated, and the welding machine is suitable for welding the battery cells and electrodes which are well stacked by the battery cell lamination machine to form a finished battery cell, so that the positive sheet and the negative sheet which are well die-cut can be arranged through the two groups of sheet die-cutting machines which are respectively die-cut, the positive sheet and the negative sheet which are respectively die-cut can be directly conveyed to the battery cell lamination machine through the feeding belt to be laminated, the manual transfer process is reduced, and the high-efficiency production and manufacture of the battery cell are realized.

The foregoing is merely one specific embodiment of the present application and any other modifications made based on the concepts of the present application are contemplated as falling within the scope of the present application.

Claims (10)

1. Ultra-large size pole piece die cutting lamination roll welding all-in-one machine with pole piece size of 800mm x 1200mm, and is characterized by comprising:

a pole piece die cutting machine;

the battery core lamination machine is connected with the pole piece die cutting machine; and

the welding machine is connected with the battery core lamination machine;

the pole piece die cutting machines are provided with two groups, and the two groups of pole piece die cutting machines are respectively suitable for die cutting the positive pole piece and the negative pole piece; the battery cell lamination machine is characterized in that two sides of the battery cell lamination machine are provided with sheet inlet, the two sheet inlet and the pole piece die-cutting machine are connected through a feeding belt, the two groups of positive pole pieces and the negative pole pieces which are die-cut by the pole piece die-cutting machine are conveyed to the battery cell lamination machine through the feeding belt to be laminated, and the welding machine is suitable for welding the battery cells and the electrodes which are laminated by the battery cell lamination machine to form a finished battery cell.

2. The oversized pole piece die-cutting lamination roll-welding integrated machine with the pole piece size of 800mm x 1200mm, which is characterized in that the pole piece die-cutting machine is provided with a pole piece discharging component, a punching component and a collecting component which are sequentially arranged along the moving direction of a conveying belt, wherein a pole piece roll is punched into a pole piece through the punching component after being placed on the pole piece discharging component and is collected by the collecting component;

the collecting assembly comprises a grabbing component arranged above the conveying belt and storage components arranged on two sides of the conveying belt, wherein each grabbing component comprises two groups of grabbing pieces which are respectively close to the storage components on two sides of the conveying belt, each grabbing piece is provided with a grabbing state for grabbing the pole piece and a placing state for placing the pole piece in the corresponding storage component, one grabbing piece is in the grabbing state, and the other grabbing piece is in the placing state.

3. An oversized pole piece die-cut lamination roll welding all-in-one machine with a pole piece size of 800mm x 1200mm as claimed in claim 2, wherein the grabbing piece comprises a grabbing plate and a plurality of sucking disc pieces uniformly arranged on the grabbing plate, and the sucking disc pieces have negative pressure to suck the pole piece.

4. A oversized die cut lamination roll welding machine having a pole piece dimension of 800mm x 1200mm as claimed in claim 3 wherein the gripping means further comprises a negative pressure generating member in communication with said suction cup member, said negative pressure generating member being adapted to generate a negative pressure within said suction cup member.

5. An oversized die-cut lamination roll welding machine for pole pieces of 800mm x 1200mm in size, as defined in claim 4, wherein the take-up assembly further comprises a drive member coupled to said gripping members, said drive member being adapted to drive said gripping members in a direction of extension of a line between two of said storage members between said storage members and said conveyor.

6. The oversized pole piece die-cutting lamination roll welding all-in-one machine with the pole piece size of 800mm x 1200mm is characterized in that the pole piece discharging assembly comprises an air inflation shaft suitable for placing the pole piece material roll and a floating rod component arranged beside the air inflation shaft, and a pole piece belt extending out of the pole piece material roll passes through the floating rod component, enters the die-cutting assembly for die-cutting and is conveyed to the position of the sheet collecting assembly by the conveying belt.

7. The oversized pole piece die-cut lamination roll-welding all-in-one machine of 800mm x 1200mm pole piece size of claim 6 wherein the die-cutting assembly comprises a knife rest disposed above the conveyor belt and a die-cutting knife disposed on the knife rest;

the cutter rest is provided with a plurality of guide posts, and the punching cutter can move towards the direction of the pole piece belt on the conveyor belt, which is close to or far away from the guide posts, under the drive of external force.

8. The oversized pole piece die-cut lamination roll welding integrated machine with the pole piece size of 800mm x 1200mm, which is characterized in that the cell lamination machine comprises a machine body, a diaphragm stacking assembly arranged on the machine body, and a positive pole piece material box and a negative pole piece material box respectively arranged on two sides of the diaphragm stacking assembly;

the diaphragm stacking assembly comprises a stacking groove and a stacking transfer piece arranged above the stacking groove, a diaphragm material roll is connected in the stacking groove, the stacking transfer piece is suitable for transferring positive plates and negative plates in the positive plate material box and the negative plate material box into the stacking groove, and Z-shaped process lamination is carried out according to modes of diaphragms, positive plates, diaphragms, negative plates, diaphragms, positive plates, diaphragms and negative plates.

9. The oversized pole piece die-cut lamination roll welding all-in-one machine with the pole piece size of 800mm x 1200mm is characterized in that positioning groove components are arranged between the positive pole piece material box and the stacking groove and between the negative pole piece material box and the stacking groove;

the positive plate in the positive plate material box and the negative plate in the negative plate material box are respectively positioned by the positioning groove component under the transportation of the stacking transportation piece and then transported to the lamination groove by the stacking transportation piece for lamination.

10. An oversized pole piece die-cut lamination roll welding all-in-one machine with a pole piece dimension of 800mm x 1200mm as claimed in claim 9, wherein the welding machine comprises a welding table and an ultrasonic welding piece arranged beside the welding table;

the battery cell lamination machine stacks the battery cell and the electrode to be welded, the battery cell and the electrode to be welded are transported to the welding table through the moving trolley, and the ultrasonic welding piece can move relative to the welding table under the driving of external force so as to perform double-roll ultrasonic welding on the battery cell and the electrode to be welded.