CN112751089B

CN112751089B - Low-cost long-life cylindrical battery cell manufacturing device and process

Info

Publication number: CN112751089B
Application number: CN202011636685.0A
Authority: CN
Inventors: 李锐辉; 杨宪宝
Original assignee: Zhangzhou Huarui Lithium New Energy Technology Co ltd
Current assignee: Zhangzhou Huarui Lithium New Energy Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-05-06
Anticipated expiration: 2040-12-31
Also published as: CN112751089A

Abstract

The invention provides a low-cost long-life cylindrical battery cell manufacturing device, which comprises a coating device for coating foil to form a pole piece, a slitting device for slitting the pole piece to form a pole piece monomer, and a forming device for winding the pole piece monomer and a diaphragm to form a battery cell; the forming device comprises an electrostatic electret device for performing electrostatic electret treatment on each layer of the battery cell, a glue applying device for applying glue to the upper surface of the first diaphragm, and a winding device for winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet together to form the battery cell; the winding device provided by the invention has a simple structure, the working efficiency is ensured, the cost of maintaining the machine is reduced, the internal structure is more compact and neat after the winding device is wound into the battery cell, and the service life of the battery is prolonged. The invention also provides a manufacturing process of the cylindrical battery cell with low cost and long service life.

Description

Low-cost long-life cylindrical battery cell manufacturing device and process

Technical Field

The invention relates to the technical field of lithium battery manufacturing, in particular to a device and a process for manufacturing a cylindrical battery cell with low cost and long service life.

Background

The cylindrical battery is a battery with high capacity, long cycle life and wide use environment temperature. The product is applied to solar lamps, lawn lamps, backup energy sources, electric tools, toy models and photovoltaic energy sources.

At the in-process of making electric core, there are the system glue, homogenate, the coating, roll compaction, cut, toast and process such as coiling, to first diaphragm at the coiling process, the negative pole monolithic, in the transportation process of each layer of second diaphragm and positive pole monolithic, if the direction of delivery between each layer is different, so shared space is great, if the direction of delivery between each layer is the same, then probably too close to and lead to the transmission between each layer to take place to interfere at the in-process of carrying, play pincher trees at the coiling process, reduce the yields, and the structure of current winder is complicated, mechanical failure and difficult maintenance take place easily, be unfavorable for saving cost and improvement work efficiency.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

An object of an embodiment of the present invention is to provide a low-cost and long-life device for manufacturing a cylindrical battery cell, so as to solve the problems mentioned in the background art that the transportation directions of the layers are the same and too close to each other, which causes interference in transmission between the layers, and wrinkles occur during the winding process, and the existing winding machine has a complex structure, is prone to mechanical failure, and is not easy to maintain.

The first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are electrostatically electret treated by the electrostatic electret device in the conveying process, so that the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are electrostatically charged and mutually repelled in the conveying process without interference, and meanwhile, the viscous glue is applied to the upper surface of the first diaphragm, so that the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are connected together by the viscous glue in the winding process, the internal structure is more compact and neat after the battery core is wound, and the service life of the battery is prolonged.

In order to achieve the purpose, the invention adopts the following technical scheme:

a low-cost long-life cylindrical battery core manufacturing device comprises a coating device for coating foil to form a pole piece, a slitting device for slitting the pole piece to form a pole piece monomer, and a forming device for winding the pole piece monomer and a diaphragm to form a battery core; the forming device comprises an electrostatic electret device for performing electrostatic electret treatment on each layer of the battery cell, a glue applying device for applying glue to the upper surface of the first diaphragm, and a winding device for winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet together to form the battery cell; the winding device comprises a winding part for winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, an auxiliary part for assisting the winding of the winding part, and a rubberizing part for pasting a stop gum on the wound battery cell.

Further, the winding portion includes a first clamping portion and a second clamping portion that clamp the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet, and a first cutting portion that cuts off the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet.

Further, the first clamping part comprises a first clamping rod, a second clamping rod and a first opening and closing driving device for driving the first clamping rod and the second clamping rod to open and close; the second clamping part comprises a third clamping rod, a fourth clamping rod and a second opening and closing driving device for driving the third clamping rod and the fourth clamping rod to open and close.

Further, the winding part further comprises a first moving driving device for driving the first clamping part and the second clamping part to move, a first telescopic driving device for driving the first clamping part to stretch, a second telescopic driving device for driving the second clamping part to stretch, and a first rotating driving device for driving the first clamping part to rotate.

Further, the first cutting part comprises a first upper cutter, a first lower cutter and a third opening and closing driving device for driving the upper cutter and the lower cutter to open and close.

Further, the auxiliary portion includes an auxiliary winding member; the auxiliary winding piece comprises a first connecting plate, a second connecting plate and a third connecting plate which are sequentially and adjacently arranged; and a first limiting winding groove is formed on one side of the first connecting plate, a second limiting winding groove is formed on one side of the third connecting plate, and the distance between the first connecting plate and the third connecting plate is smaller than the width dimension of the negative pole single piece.

Further, the first limiting winding groove comprises a first extending section and a first arc-shaped winding section; the second limiting winding groove comprises a second extending section and a second arc-shaped winding section.

Further, the auxiliary part further comprises an auxiliary conveying belt for conveying the auxiliary winding member; the auxiliary winding part is fixedly connected to the auxiliary conveying belt, and the conveying direction of the auxiliary conveying belt is perpendicular to the conveying direction of the first diaphragm.

Further, the taping part includes a tape supply part that supplies the termination tape roll, an adsorption part that adsorbs the termination tape roll, and a second cutting part that cuts the termination tape roll.

Further, the adsorption part includes a vacuum adsorption head for adsorbing the termination tape roll; and an arc-shaped adsorption groove matched with the outer circumferential surface of the battery core is formed on the lower surface of the vacuum adsorption head.

Further, the adsorption part also comprises a first lifting driving device for driving the vacuum adsorption head to lift.

Further, the tape supply section includes a tape winding roller that winds the termination tape roll, a first guide roller that guides the termination tape roll, and a tape conveying roller that conveys the termination tape roll.

Further, the second cutting part comprises a second upper cutter, a second lower cutter and a fourth opening and closing driving device for driving the second upper cutter and the second lower cutter to open and close.

Further, the tape conveying roller has a first output end for outputting the terminated tape roll, and the second cutting portion is provided at one side of the first output end.

Further, the electrostatic electret device includes a first electrostatic electret generator that performs electrostatic electret processing on the first diaphragm, a second electrostatic electret generator that performs electrostatic electret processing on the negative electrode single sheet, a third electrostatic electret generator that performs electrostatic electret processing on the second diaphragm, and a fourth electrostatic electret generator that performs electrostatic electret processing on the positive electrode single sheet.

Further, the glue applicator includes a glue applicator portion that outputs viscous glue.

Further, the glue applying part comprises a plurality of groups of glue applying brushes in contact with the upper surface of the first diaphragm, the glue applying brushes are arranged at equal intervals along the conveying direction of the first diaphragm, and the width dimension of the glue applying brushes is equal to that of the first diaphragm.

Further, the molding apparatus further includes a first supply device that supplies the first separator, a second supply device that supplies the negative electrode single sheets, a third supply device that supplies the second separator, and a fourth supply device that supplies the positive electrode single sheets.

Further, the first supply device includes a first guide portion that guides the first diaphragm, and a first transport portion that transports the first diaphragm.

Further, the second feeding device comprises a second guide part for guiding the negative single pieces and a second conveying part for conveying the negative single pieces.

Further, the third supply device includes a third guide portion that guides the second diaphragm, and a third transport portion that transports the second diaphragm.

Further, the fourth feeding device includes a fourth guide portion that guides the individual positive electrode sheets, and a fourth conveying portion that conveys the individual positive electrode sheets.

Furthermore, the forming device also comprises a limiting device for limiting the first diaphragm and the positive single sheet.

Further, the limiting device comprises an upper limiting part for limiting the first diaphragm and a lower limiting part for limiting the anode single piece; the first diaphragm, the negative electrode single piece, the second diaphragm and the positive electrode single piece are positioned between the upper limiting part and the lower limiting part.

Further, the slitting device comprises a first feeding mechanism for supplying pole pieces, a slitting mechanism for slitting the pole pieces to form pole piece monomers, and a winding mechanism for winding the pole piece monomers.

Further, it includes a plurality of cutting device that form many positive pole monolithic or many negative pole monolithic to cut the mechanism to the pole piece, and is a plurality of cutting device is along the equidistant setting of width direction of pole piece.

Further, the cutting means includes a first cutting portion and a second cutting portion; the axis of the first cutting part and the axis of the second cutting part are obliquely arranged.

Further, the first cutting portion includes a first circular saw blade; the second cutting portion includes a second circular saw blade.

Further, the inclination angle of the axis of the first disc saw blade is 45 degrees; the axis of the second circular saw blade is inclined at an angle of 135 deg.

Furthermore, the cutting device also comprises a first rotary driving device for driving the first circular saw blade to rotate, and a second rotary driving device for driving the second circular saw blade to rotate.

Further, the winding mechanism comprises a tensioning device for tensioning the pole piece single body and a winding device for winding the pole piece single body.

Further, the tensioning device comprises a first tensioning portion for tensioning the plurality of negative electrode single pieces or the plurality of positive electrode single pieces.

Further, the first tensioning part includes a first tensioning roller, a second tensioning roller, and a third tensioning roller; first tensioning roller and third tensioning roller and anodal monolithic or the monolithic lower surface roll connection of negative pole, the second tensioning roller rolls with anodal monolithic or the monolithic upper surface roll connection of negative pole, the second tensioning roller is in between first tensioning roller and the third tensioning roller.

Further, the furling device comprises a first furling part and a second furling part.

Further, the first winding part includes a first guide roller and a plurality of first winding trays; the second winding part comprises a second guide roller and a plurality of second winding discs; the second guide roller is positioned below the first guide roller.

Further, the first winding part further comprises a third rotation driving device for driving the plurality of first winding disks to rotate; the second furling part also comprises a fourth rotation driving device which drives the plurality of second furling discs to rotate.

Furthermore, the slitting device also comprises a baking mechanism for baking the wound anode single sheet and cathode single sheet.

Further, the roasting mechanism comprises a roasting part and a heating element; the baking part is internally provided with a containing cavity for containing a plurality of first coiling disks and second coiling disks, and the heating element is arranged in the containing cavity.

Further, coating unit is including the system of making of positive pole coating or negative pole coating mechanism, carries out the coating mechanism that coats to the foil, carries out the stoving mechanism of drying to the pole piece to carry out the rolling mechanism that rolls to the pole piece.

Further, the gum making mechanism comprises a first homogenizing device, a second homogenizing device and a third homogenizing device.

Further, the first homogenizing device comprises a first stirring cylinder and a first stirring device; the first stirring device comprises a first stirring shaft, a plurality of first stirring parts connected to the outer circumferential surface of the first stirring shaft, and a fifth rotation driving device for driving the first stirring shaft to rotate; a plurality of first stirring parts are arranged at equal intervals along the axial direction of the first stirring shaft, the first stirring device is arranged in the first stirring cylinder, the axis of the first stirring cylinder is overlapped with the axis of the first stirring shaft, and the output end of the fifth rotation driving device is connected with the first stirring shaft.

Further, the second homogenizing device comprises a second stirring cylinder and a second stirring device; the second stirring device comprises a second stirring shaft, a plurality of second stirring parts connected to the outer circumferential surface of the second stirring shaft, and a sixth rotation driving device for driving the second stirring shaft to rotate; the second stirring parts are arranged at equal intervals along the axial direction of the second stirring shaft, the second stirring device is arranged in the second stirring cylinder, the axis of the second stirring cylinder is overlapped with the axis of the second stirring shaft, and the output end of the sixth rotation driving device is connected with the second stirring shaft.

Further, the third homogenizing device comprises a third stirring cylinder and a third stirring device; the third stirring device comprises a third stirring shaft, a plurality of third stirring parts connected to the outer circumferential surface of the third stirring shaft and a seventh rotation driving device for driving the third stirring shaft to rotate; the third stirring parts are arranged at equal intervals along the axial direction of the third stirring shaft, the third stirring device is arranged in the third stirring cylinder, the axis of the third stirring cylinder is overlapped with the axis of the third stirring shaft, and the output end of the seventh rotation driving device is connected with the third stirring shaft.

Further, the first mixing drum is communicated with a third mixing drum through a first material conveying pipe, and the second mixing drum is communicated with the third mixing drum through a second material conveying pipe.

Further, the coating mechanism comprises a foil conveying device for conveying the foil and a spraying device for spraying the positive coating or the negative coating on the upper surface of the foil.

Further, the foil conveying device comprises a bearing part for bearing the foil roll, a second tensioning part for tensioning the foil, a foil conveying part for conveying the foil, and a pole piece rolling part for rolling the pole piece.

Further, the spraying device comprises a spraying part for outputting the positive coating or the negative coating, and a coating storage part for storing the positive coating or the negative coating; the spraying part is communicated with the paint storage part through a third conveying pipe, and the paint storage part is communicated with the third mixing drum through a first connecting pipe.

Further, the spraying part comprises a spraying opening; the output end of the spraying port faces the upper surface of the foil.

Further, the drying mechanism comprises a drying part for drying the pole piece and the coating and an air heater for outputting hot air to the upper surface of the pole piece; one end of the drying part is provided with an opening for the pole piece to pass through.

Further, the rolling mechanism comprises a rolling part for rolling the pole pieces.

Further, the rolling part comprises a first rolling roller and a second rolling roller; the axis level of first roller and second roller sets up and is mutually perpendicular with the direction of delivery of pole piece, first roller and second have the first clearance that the pole piece passed between the roller, the upper surface roll connection of first roller and pole piece, the second roller rolls the lower surface roll connection of roller and pole piece.

A manufacturing process of a cylindrical battery cell with low cost and long service life comprises the following steps:

(1) coating positive coating or negative coating on the foil to form a positive pole piece and a negative pole piece;

(2) drying the positive pole piece and the negative pole piece;

(3) carrying out rolling treatment on the positive pole piece and the negative pole piece;

(4) slitting the rolled negative pole piece and positive pole piece to form a negative pole single piece and a positive pole single piece;

(5) baking the negative single piece and the positive single piece;

(6) and winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to form the battery core.

Further, in the step (6), in the process of conveying the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are respectively subjected to electrostatic electret treatment, and adhesive glue is applied to the upper surface of the first diaphragm.

Further, the first diaphragm, the cathode single sheet, the second diaphragm and the anode single sheet are respectively subjected to electrostatic electret treatment through the first electrostatic electret generator, the second electrostatic electret generator, the third electrostatic electret generator and the fourth electrostatic electret generator, so that the first diaphragm, the cathode single sheet, the second diaphragm and the anode single sheet are charged with static electricity and mutually repel without interference in the conveying process; a viscous glue is applied to the upper surface of the first membrane by a glue applicator.

Further, a first clamping part of the winding device clamps the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first moving driving device drives the first clamping part to stretch the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to the length required to be wound, the second clamping part clamps the tail ends of the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first cutting part cuts off each layer, the first moving driving device drives the first clamping part and the second clamping part to move, the first clamping part moves to a first limiting groove and a second limiting groove of the auxiliary winding piece, the first rotating driving device drives the first clamping part to rotate to wind each layer, the first moving driving device drives the second clamping part to gradually approach the first clamping part to be matched with the first clamping part to complete the winding operation, adhesive glue on the first diaphragm enables connection between each layer to be more compact and neat after winding, after the coiling is finished, after the tape supply part outputs the termination adhesive tape, the vacuum adsorption head of the adsorption part adsorbs the termination adhesive tape, the second cutting part cuts off the termination adhesive tape roll after the vacuum adsorption head adsorbs the termination adhesive tape, the first lifting driving device drives the vacuum adsorption head to move downwards to be matched with the first rotary driving device, the termination adhesive tape roll is adhered to the first diaphragm, the negative electrode single sheet, the tail ends of the second diaphragm and the positive electrode single sheet form an electric core, the auxiliary conveying belt drives the auxiliary coiling part and the electric core to convey forwards, the first clamping part extends out of the electric core, and the first movable driving device drives the first clamping part and the second clamping part to return to the initial position to perform secondary coiling operation.

Further, before the step (1), a positive electrode coating material and a negative electrode coating material are prepared.

Further, preparing a positive coating or a negative coating through a glue making mechanism; placing part of the positive electrode raw materials into a first homogenizing device and stirring to form a first positive electrode mixture, placing the other part of the positive electrode raw materials into a second homogenizing device and stirring to form a second positive electrode mixture, and introducing the first positive electrode mixture and the second positive electrode mixture into a third homogenizing device to form a positive electrode coating; or putting part of the negative electrode raw materials into a first homogenizing device and stirring to form a first negative electrode mixture, putting the other part of the negative electrode raw materials into a second homogenizing device and stirring to form a second negative electrode mixture, and introducing the first negative electrode mixture and the second negative electrode mixture into a third homogenizing device to form the negative electrode coating.

Further, in the step (1), a positive coating is sprayed on the foil by a spraying device of the coating mechanism to form a positive pole piece, or a negative coating is sprayed on the foil to form a negative pole piece.

Further, in the step (2), drying the positive pole piece or the negative pole piece through a drying mechanism; the positive pole piece or the negative pole piece enters from the opening of the drying part, and the hot air blower outputs hot air to the upper surface of the positive pole piece or the negative pole piece to dry the positive pole piece or the negative pole piece.

Further, in the step (3), the rolling mechanism is used for rolling the positive pole piece or the negative pole piece, and the positive pole piece or the negative pole piece passes through the first rolling roller and the second rolling roller, so that the coating on the foil is better attached to the foil, and the connection between the foil and the coating is tighter.

Further, in the step (4), the positive pole piece or the negative pole piece is cut by a cutting mechanism of the cutting device, and the winding mechanism winds the cut positive pole single piece or negative pole single piece.

Further, the pole pieces are equally cut by the plurality of cutting devices, the pole pieces are cut by a first cutting portion and a second cutting portion of the cutting devices, the negative pole single pieces or the positive pole single pieces are wound by a winding device of the winding mechanism, the first winding disc and the second winding disc correspond to the negative pole single pieces or the positive pole single pieces, and the negative pole single pieces and the positive pole single pieces are wound.

Further, in the step (5), the furled positive single pieces and negative single pieces are baked through a baking mechanism; and placing the positive single pieces or the negative single pieces on the first coiling disc and the second coiling disc into a baking part for baking, and baking and drying the positive single pieces and the negative single pieces.

After the structure is adopted, the cylindrical battery cell manufacturing device with low cost and long service life has the following beneficial effects:

after the pole pieces are coated by the coating device, a slitting mechanism of the slitting device slits the pole pieces, an electrostatic electret device of the forming device respectively performs electrostatic electret treatment on a first diaphragm, a negative single piece, a second diaphragm and a positive single piece in the process of conveying the first diaphragm, the negative single piece, the second diaphragm and the positive single piece, a glue applying device applies adhesive glue on the upper surface of the first diaphragm, a winding part of the winding device winds the first diaphragm, the negative single piece, the second diaphragm and the positive single piece through an auxiliary part to form a battery cell, and in the winding process, the upper surface of the first diaphragm is bonded with the lower surface of the positive single piece together, so that the internal structure is more compact and neat after the battery cell is wound, and the tail end of the wound battery cell is bonded with stop glue by the glue applying part to complete the winding of the battery cell; the winding device provided by the invention has a simple structure, the working efficiency is ensured, the cost of maintaining the machine is reduced, the internal structure is more compact and neat after the winding device is wound into the battery cell, and the service life of the battery is prolonged.

The invention also provides a manufacturing process of the low-cost long-life cylindrical battery cell, which comprises the steps of carrying out electrostatic electret treatment on the first diaphragm, the cathode single sheet, the second diaphragm and the anode single sheet in the conveying process through an electrostatic electret device, so that the first diaphragm, the cathode single sheet, the second diaphragm and the anode single sheet are charged with static electricity and mutually repelled in the conveying process without interference, and simultaneously applying adhesive glue on the upper surface of the first diaphragm to connect the first diaphragm, the cathode single sheet, the second diaphragm and the anode single sheet together through the adhesive glue in the winding process, so that the internal structure is more compact and neat after the battery cell is wound, and the service life of the battery is prolonged.

Drawings

Fig. 1 is a schematic perspective view of a cylindrical cell manufacturing apparatus and process with low cost and long service life according to the present invention;

FIG. 2 is a schematic perspective view of an imaging device according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the slitting device according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is a schematic view of the structure of the coating apparatus of the present invention.

In the figure: 1-coating device, 2-cutting device, 3-forming device, 31-electrostatic electret device, 32-sizing device, 33-winding device, 331-winding part, 332-auxiliary part, 333-gluing part, 3311-first clamping part, 3312-second clamping part, 3313-first cutting part, 3314-first moving drive device, 3315-first telescopic drive device, 3316-second telescopic drive device, 3317-first rotating drive device, 3321-auxiliary winding part, 3322-auxiliary conveyor belt, 3331-belt supply part, 3332-adsorption part, 3333-second cutting part, 311-first electrostatic electret generator, 312-second electrostatic electret generator, 313-third electrostatic electret generator, 314-fourth electrostatic electret generator, 321-glue application part, 34-first feed device, 35-second feed device, 36-third feed device, 37-fourth feed device, 341-first guide part, 342-first transport part, 351-second guide part, 352-second transport part, 361-third guide part, 362-third transport part, 371-fourth guide part, 372-fourth transport part, 38-stop device, 381-upper stop part, 382-lower stop part, 4-cutting mechanism, 5-winding mechanism, 41-cutting device, 411-first cutting part, 412-second cutting part, 51-tensioning device, 52-winding device, 511-first tensioning part, 5111-first tensioning roller, 5112-second tensioning roller, 5113-third tensioning roller, 521-a first winding part, 522-a second winding part, 5211-a first guide roller, 5212-a first winding disc, 5221-a second guide roller, 5222-a second winding disc, 21-a baking mechanism, 11-a glue making mechanism, 12-a coating mechanism, 13-a drying mechanism, 14-a rolling mechanism, 111-a first homogenizing device, 112-a second homogenizing device, 113-a third homogenizing device, 1111-a first stirring cylinder, 1112-a first stirring device, 1121-a second stirring cylinder, 1122-a second stirring device, 1131-a third stirring cylinder, 121-a foil conveying device, 122-a spraying device, 1211-a bearing part, 1212-a second tensioning part, 1213-a foil conveying part, 1214-a pole piece winding part, 1221-a spraying part, 1222-a paint storage part, 131-drying section, 132-hot air blower, 141-rolling section, 1411-first rolling roller, 1412-second rolling roller.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.

As shown in fig. 1 to 6, the low-cost long-life cylindrical electrical core manufacturing device of the present invention includes a coating device 1 for coating foil to form a pole piece, a slitting device 2 for slitting the pole piece to form a pole piece monomer, and a forming device 3 for winding the pole piece monomer and a diaphragm to form an electrical core; the forming device 3 comprises an electrostatic electret device 31 for performing electrostatic electret treatment on each layer of the battery cell, a glue applying device 32 for applying glue to the upper surface of the first diaphragm, and a winding device 33 for winding the first diaphragm, the negative electrode single sheet, the second diaphragm and the positive electrode single sheet together to form the battery cell; the winding device 33 includes a winding unit 331 that winds the first separator, the negative electrode sheet, the second separator, and the positive electrode sheet, an auxiliary unit 332 that assists the winding unit 331 in winding, and a tape unit 333 that applies a terminating tape to the wound cell.

In this way, after the foil is coated by the coating device 1 to form a pole piece, the pole piece is slit by the slitting mechanism 4 of the slitting device 2, the electrostatic electret device 31 of the forming device 3 respectively performs electrostatic electret treatment on the first diaphragm, the negative single piece, the second diaphragm and the positive single piece in the process of conveying the first diaphragm, the negative single piece, the second diaphragm and the positive single piece, the glue applying device 32 applies adhesive glue on the upper surface of the first diaphragm, the winding part 331 of the winding device 33 winds the first diaphragm, the negative single piece, the second diaphragm and the positive single piece through the auxiliary part 332 to form a battery cell, in the winding process, the upper surface of the first diaphragm and the lower surface of the positive single piece are bonded together, so that the internal structure is more compact and neat after the battery cell is wound, and the glue adhering part 333 adheres a stop glue on the tail end of the wound battery cell to complete the winding of the battery cell; the winding device 33 is simple in structure, the working efficiency is guaranteed, the cost of maintaining the machine is reduced, the internal structure is more compact and neat after the battery cell is wound, and the service life of the battery is prolonged. Specifically, the pole piece comprises a positive pole piece and a negative pole piece, and the pole piece monomer comprises a positive single piece and a negative single piece.

Preferably, the winding portion 331 includes a first clamping portion 3311 and a second clamping portion 3312 that clamp the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet, and a first cutting portion 3313 that cuts the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet. The first clamping portion 3311 clamps the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet, after the first holding portion 3311 is driven by the first movement driving means 3314 to elongate the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet to a desired length for winding, the second clamping part 3312 clamps the tail ends of the first diaphragm, the negative electrode single piece, the second diaphragm and the positive electrode single piece, the first cutting part 3313 cuts off each layer, the first moving driving device 3314 drives the first clamping part 3311 and the second clamping part 3312 to move, so that the first clamping part 3311 moves into the first limiting groove and the second limiting groove of the auxiliary winding part 3321 to make each layer contact with the auxiliary part 332 to eliminate static electricity on each layer, the first rotating driving device 3317 drives the first clamping part 3311 to rotate to wind each layer, and the first moving driving device 3314 drives the second clamping part 3312 to gradually draw close to the first clamping part 3311 to match with the first clamping part 3311 to complete the winding operation. Specifically, the auxiliary portion 332 is made of a conductive material.

Preferably, the first clamping part 3311 includes a first clamping rod, a second clamping rod, and a first opening and closing driving device that drives the first clamping rod and the second clamping rod to open and close; the second clamping part 3312 includes a third clamping rod, a fourth clamping rod, and a second opening and closing driving device that drives the third clamping rod and the fourth clamping rod to open and close. The first clamping rod and the second clamping rod are driven by the first opening and closing driving device to clamp the first diaphragm, the negative single piece, the second diaphragm and the positive single piece in a closed mode, and the third clamping rod and the fourth clamping rod are driven by the second opening and closing driving device to clamp the first diaphragm, the negative single piece, the second diaphragm and the positive single piece in a closed mode; the first opening and closing driving device comprises a first air cylinder and a second air cylinder, the output end of the first air cylinder is connected with a first clamping rod, the output end of the second air cylinder is connected with a second clamping rod, the second opening and closing driving device comprises a third air cylinder and a fourth air cylinder, the output end of the third air cylinder is connected with the third clamping rod, and the output end of the fourth air cylinder is connected with the fourth clamping rod; the first clamping rod, the second clamping rod, the third clamping rod and the fourth clamping rod are made of insulating materials.

Preferably, the winding part 331 further includes a first movement driving means 3314 for driving the first and

second clamping parts

3311 and 3312 to move, a first extension driving means 3315 for driving the first clamping part 3311 to extend and contract, a second extension driving means 3316 for driving the second clamping part 3312 to extend and contract, and a first rotation driving means 3317 for driving the first clamping part 3311 to rotate. The first and second clamping parts 3311 and 3312 are driven by the first moving driver 3314 to move to clamp the front and rear ends of each layer, and then the first clamping part 3311 is driven to move to the auxiliary part 332 to contact with the auxiliary part 332 to eliminate static electricity on each layer, the first rotating driver 3317 drives the first clamping part 3311 to rotate for winding, after the winding is finished and the stop glue is applied, the first telescopic driver 3315 drives the first clamping part 3311 to retract from the core, and the second telescopic driver 3316 drives the second clamping part 3312 to retract to avoid interference with other parts when moving to the initial position; specifically, the first movement driving means 3314 includes a slide rail, a fifth cylinder and a sixth cylinder; the fifth cylinder drives the first clamping part 3311 to slide on the slide rail, the sixth cylinder drives the second clamping part 3312 to slide on the slide rail, and the first telescopic driving device 3315 comprises a seventh cylinder and an eighth cylinder; the output end of the seventh cylinder is connected with the first clamping rod, the output end of the eighth cylinder is connected with the second clamping rod, and the second telescopic driving device 3316 comprises a ninth cylinder and a tenth cylinder; the output end of the ninth cylinder is connected to the third clamping rod, the output end of the tenth cylinder is connected to the fourth clamping rod, and the first rotation driving device 3317 includes a rotation cylinder.

Preferably, in order to make the cut surface smoother, the first cutting part 3313 includes a first upper cutter, a first lower cutter, and a third opening and closing driving device which drives the upper cutter and the lower cutter to open and close. The third opening and closing driving device comprises a first power cylinder and a second power cylinder, wherein the output end of the first power cylinder is connected with the first upper cutter, and the output end of the second power cylinder is connected with the first lower cutter; the first upper cutter and the second upper cutter are both ceramic cutters.

Preferably, the auxiliary portion 332 includes an auxiliary winding member 3321; the auxiliary winding member 3321 includes a first connection plate, a second connection plate and a third connection plate which are adjacently disposed in sequence; a first limiting winding groove is formed in one side of the first connecting plate, a second limiting winding groove is formed in one side of the third connecting plate, and the distance between the first connecting plate and the third connecting plate is smaller than the width dimension of the negative pole single piece. The first clamping part 3311 enters the first limiting winding groove and the second limiting winding groove, and the height size of the first limiting winding groove and the second limiting winding groove is equal to the diameter size of the cylindrical battery cell; make the cylinder electricity core coil and finish the back joint in first spacing coiling groove and the spacing coiling inslot of second, be convenient for follow-up putting cylinder electricity core in the casing.

Preferably, the first limit winding groove comprises a first extending section and a first arc-shaped winding section; the second limiting winding groove comprises a second extending section and a second arc-shaped winding section. First clamping part 3311 passes first section and the second of stretching into and stretches into the section, and the diameter of first arc winding section and second arc winding section equals the diameter of cylinder electricity core, makes first clamping part 3311 convolute in first arc winding section and second arc winding section, makes the process of coiling more smooth.

Preferably, the auxiliary portion 332 further includes an auxiliary conveyor belt 3322 that conveys an auxiliary winding member 3321; the auxiliary winding member 3321 is fixedly coupled to the auxiliary conveyor belt 3322, and a conveying direction of the auxiliary conveyor belt 3322 is perpendicular to a conveying direction of the first separator. The auxiliary winding member 3321 is circularly conveyed by the auxiliary conveyor 3322, which facilitates the circular operation.

Preferably, in order to improve the operation efficiency, the taping part 333 includes a tape supplying part 3331 for supplying the termination tape roll, a suction part 3332 for sucking the termination tape roll, and a second cutting part 3333 for cutting the termination tape roll.

Preferably, the adsorption part 3332 includes a vacuum adsorption head that adsorbs the termination tape roll; the lower surface of the vacuum adsorption head forms an arc adsorption groove matched with the outer circumferential surface of the battery core. The arc-shaped adsorption groove is matched with the outer circumferential surface of the battery core, so that the termination adhesive tape adsorbed by the vacuum adsorption head is more easily adhered to the battery core; specifically, the vacuum generator is used for sucking to enable the vacuum adsorption head to generate negative pressure so as to firmly adsorb the termination adhesive tape, and after the vacuum generator is attached to the battery cell, the vacuum generator is used for inflating to enable the air pressure of the vacuum adsorption head to return to zero, so that the termination adhesive tape cannot be torn off from the battery cell.

Preferably, in order to improve the working efficiency, the suction part 3332 further includes a first elevation driving device that drives the vacuum suction head to ascend and descend. Specifically, the winding station of electric core is under the vacuum adsorption head, and first lift drive arrangement includes lift cylinder.

Preferably, the tape supplying part 3331 includes a tape winding roller that winds the termination tape roll, a first guide roller that guides the termination tape roll, and a tape conveying roller that conveys the termination tape roll. The adhesive tape is conveyed by the adhesive tape conveying roller, and the first guide roller enables the conveying of the adhesive tape roll to be smoother.

Preferably, in order to improve the working efficiency, the second cutting part 3333 includes a second upper cutter, a second lower cutter, and a fourth opening and closing driving device for driving the second upper cutter and the second lower cutter to open and close. Specifically, the fourth switching driving device comprises a third power cylinder and a fourth power cylinder, the output end of the third power cylinder is connected with the second upper cutter, and the output end of the fourth power cylinder is connected with the second lower cutter.

Preferably, in order to improve work efficiency, the tape conveying roller has a first output end outputting the terminating tape roll, and the second cutting portion 3333 is provided at one side of the first output end.

Preferably, the electrostatic electret 31 includes a first electrostatic electret generator 311 that performs electrostatic electret treatment on the first membrane, a second electrostatic electret generator 312 that performs electrostatic electret treatment on the negative electrode single sheet, a third electrostatic electret generator 313 that performs electrostatic electret treatment on the second membrane, and a fourth electrostatic electret generator 314 that performs electrostatic electret treatment on the positive electrode single sheet. The first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are charged with static electricity by performing electrostatic electret treatment on the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, and the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet repel each other in the conveying process, so that mutual interference in the conveying process is avoided, and meanwhile, the occupied area of operation is saved.

Preferably, the sizing device 32 includes a sizing portion 321 that outputs viscous glue. The adhesive part 321 outputs adhesive glue on the upper surface of the first diaphragm, so that the upper surface of the wound first diaphragm is bonded with the lower surface of the anode single sheet, the internal structure of the wound battery cell is more compact, and the service life of the battery cell is prolonged.

Preferably, in order to spread the upper surface of the first membrane more uniformly, the glue applying part 321 includes a plurality of sets of glue applying brushes in contact with the upper surface of the first membrane, the plurality of sets of glue applying brushes being disposed at equal intervals in the conveying direction of the first membrane, and a width dimension of the glue applying brushes being equal to a width dimension of the first membrane.

Preferably, in order to improve the work efficiency, the forming device 3 further includes a first supply device 34 supplying the first separator, a second supply device 35 supplying the negative electrode individual pieces, a third supply device 36 supplying the second separator, and a fourth supply device 37 supplying the positive electrode individual pieces.

Preferably, the first supply device 34 includes a first guide portion 341 that guides the first diaphragm, and a first delivery portion 342 that delivers the first diaphragm. The first guide part 341 includes a plurality of rotating rollers roll-connected to the surface of the first membrane, and the first transfer part 342 includes an upper transfer roller and a lower transfer roller with a gap therebetween through which the first membrane passes, so that the transfer of the first membrane is more smooth; specifically, the first guide portion 341 and the first conveying portion 342 are made of an insulating material.

Preferably, the second feeding device 35 includes a second guide portion 351 for guiding the negative electrode individual pieces, and a second conveying portion 352 for conveying the negative electrode individual pieces. The second guiding part 351 comprises a plurality of rotating rollers which are in rolling connection with the surface of the negative single piece, and the second conveying part 352 comprises an upper conveying roller and a lower conveying roller, wherein a gap through which the negative single piece passes is formed between the upper conveying roller and the lower conveying roller, so that the conveying of the negative single piece is more stable; specifically, the second guide portion 351 and the second conveying portion 352 are made of an insulating material.

Preferably, the third supply device 36 includes a third guide portion 361 for guiding the second diaphragm, and a third delivery portion 362 for delivering the second diaphragm. The third guide 361 includes a plurality of rotating rollers roll-coupled to the surface of the second diaphragm, and the third conveying part 362 includes an upper conveying roller and a lower conveying roller with a gap therebetween through which the third diaphragm passes, so that the third diaphragm is more smoothly conveyed; specifically, the third guide 361 and the third transport part 362 are made of an insulating material.

Preferably, the fourth supply device 37 includes a fourth guide portion 371 for guiding the individual positive electrode sheets, and a fourth transfer portion 372 for transferring the individual positive electrode sheets. The fourth guide 371 includes a plurality of rotating rollers in rolling connection with the surface of the positive electrode single piece, the fourth conveying 372 includes an upper conveying roller and a lower conveying roller, and a gap through which the positive electrode single piece passes is formed between the upper conveying roller and the lower conveying roller, so that the conveying of the positive electrode single piece is more stable; specifically, the fourth guide 371 and the fourth transport 372 are made of insulating material.

Specifically, the negative electrode tabs are welded to the negative electrode sheets before the negative electrode sheets are conveyed by the second material supply device 35, and the positive electrode tabs are welded to the positive electrode sheets before the positive electrode sheets are conveyed by the fourth material supply device 37.

Preferably, the forming device 3 further comprises a limiting device 38 for limiting the first diaphragm and the positive electrode single piece. The first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are always in a limited range through the limiting device 38, so that subsequent winding operation is facilitated.

Preferably, the limiting device 38 includes an upper limiting portion 381 which limits the first diaphragm, and a lower limiting portion 382 which limits the positive electrode single piece; the first separator, the negative electrode single piece, the second separator, and the positive electrode single piece are interposed between the upper stopper portion 381 and the lower stopper portion 382. The first separator, the negative electrode piece, the second separator, and the positive electrode piece are always positioned between the upper stopper 381 and the lower stopper 382 by the upper stopper 381 and the lower stopper 382; specifically, the upper limit portion 381 includes a plurality of upper limit rollers, the lower limit portion 382 includes a plurality of lower limit rollers, and both the upper limit rollers and the lower limit rollers are made of insulating materials.

Preferably, the slitting device 2 comprises a first feeding mechanism for supplying pole pieces, a slitting mechanism 4 for slitting the pole pieces to form pole piece monomers, and a winding mechanism 5 for winding the pole piece monomers. The pole pieces are conveyed through the first feeding mechanism, the pole pieces are equally divided and cut by the dividing and cutting mechanism 4, and then the pole piece monomers are wound up by the winding mechanism 5.

Preferably, the slitting mechanism 4 includes a plurality of slitting devices 41 for slitting the pole pieces to form a plurality of positive pole pieces or a plurality of negative pole pieces, and the plurality of slitting devices 41 are arranged at equal intervals along the width direction of the pole pieces. The pole pieces are cut into equally divided pole piece units by a plurality of cutting devices 41.

Preferably, the cutting device 41 comprises a first cut portion 411 and a second cut portion 412; the axis of the first cutout 411 and the axis of the second cutout 412 are obliquely arranged. The axis of the first cutting part 411 and the axis of the second cutting part 412 are obliquely arranged, so that the first cutting part 411 and the second cutting part 412 have openings larger than the width of the single pole piece, and the single pole piece cannot interfere with the first cutting part 411 and the second cutting part 412 when moving upwards or downwards.

Preferably, in order to make the cut surface more flat, the first cutting portion 411 includes a first circular saw blade; the second cutting portion 412 includes a second circular saw blade.

Preferably, in order to make the upward opening and the downward opening equal in size, the axis of the first circular saw blade is inclined at an angle of 45 °; the axis of the second circular saw blade is inclined at an angle of 135 deg..

Preferably, in order to improve the cutting efficiency, the cutting device 41 further includes a first rotation driving device for driving the first circular saw blade to rotate, and a second rotation driving device for driving the second circular saw blade to rotate. In particular, the first and second rotary drives are both motor-driven.

Preferably, the winding mechanism 5 includes a tensioning device 51 for tensioning the single pole piece, and a winding device 52 for winding the single pole piece. The tensioning device 51 is used for tensioning the positive single piece or the negative single piece, so that the problem of wrinkling after the positive single piece or the negative single piece is wound up by the winding device 52 is avoided.

Preferably, in order to facilitate the winding of the negative electrode single piece or the positive electrode single piece, the tensioning device 51 includes a first tensioning portion 511 that tensions the plurality of negative electrode single pieces or the plurality of positive electrode single pieces.

Preferably, in order to facilitate winding up of the negative electrode single piece or the positive electrode single piece, the first tensioning portion 511 includes a first tensioning roller 5111, a second tensioning roller 5112, and a third tensioning roller 5113; the first tension roller 5111 and the third tension roller 5113 are in rolling connection with the lower surface of the single positive electrode sheet or the single negative electrode sheet, the second tension roller 5112 is in rolling connection with the upper surface of the single positive electrode sheet or the single negative electrode sheet, and the second tension roller 5112 is located between the first tension roller 5111 and the third tension roller 5113.

Preferably, the furling device 52 comprises a first furling part 521 and a second furling part 522. The positive single pieces or the negative single pieces are respectively collected through the first furling part 521 and the second furling part 522, so that the friction between the positive single pieces or the negative single pieces and the disc saw blade is avoided.

Preferably, in order to facilitate winding of each positive electrode piece or each negative electrode piece, the first winding part 521 includes a first guide roller 5211 and a plurality of first winding trays 5212; the second winding part 522 includes a second guide roller 5221 and a plurality of second winding disks; the second guide roller 5221 is positioned below the first guide roller 5211. Part of the pole pieces are guided by the first guide rollers 5211, the first winding disc 5212 winds the pole pieces on the first guide rollers 5211, the second guide rollers 5221 guide the other part of the pole pieces, and the second winding disc 5222 winds the pole pieces on the second guide rollers 5221.

Preferably, in order to make the winding of the single positive electrode sheet or the single negative electrode sheet more stable, the first winding part 521 further includes a third rotation driving device for driving the plurality of first winding disks 5212 to rotate; the second take-up portion 522 further includes fourth rotation driving means for driving the plurality of second take-up disks 5222 to rotate. In particular, the third and fourth rotary drives are both motor-driven.

Preferably, the slitting device 2 further comprises a baking mechanism 21 for baking the wound positive electrode single piece and negative electrode single piece in order to make the coating adhere to the foil better.

Preferably, the baking mechanism 21 includes a baking portion and a heating element; an accommodating cavity for accommodating a plurality of first coiling disks 5212 and second coiling disks 5222 is formed in the baking part, and the heating element is arranged in the accommodating cavity. The accommodating cavity in the baking part is heated by the heating element, and the positive electrode single sheet or the negative electrode single sheet on the first rolling disc 5212 and the second rolling disc 5222 in the accommodating cavity is baked, so that the coating is better attached to the foil.

Preferably, the coating device 1 includes a glue making mechanism 11 for making a positive coating or a negative coating, a coating mechanism 12 for coating the foil, a drying mechanism 13 for drying the pole pieces, and a rolling mechanism 14 for rolling the pole pieces. After the glue making mechanism 11 makes the positive coating or the negative coating, the coating mechanism 12 coats the positive coating or the negative coating on the foil to form a positive pole piece and a negative pole piece, and the drying mechanism 13 and the rolling mechanism 14 make the coating better adhere to the foil.

Preferably, the gum making mechanism 11 comprises a first homogenizing device 111, a second homogenizing device 112, and a third homogenizing device 113. When the anode coating is needed, introducing part of the anode raw materials into a first homogenizing device 111 to be mixed to form a first anode mixture, introducing the other part of the anode raw materials into a second homogenizing device 112 to be mixed to form a second anode mixture, and introducing the first anode mixture and the second anode mixture into a third homogenizing device 113 to form the anode coating; when the negative electrode coating is needed, a part of the negative electrode raw materials are introduced into the first homogenizing device 111 and mixed to form a first negative electrode mixture, the other part of the negative electrode raw materials are introduced into the second homogenizing device 112 and mixed to form a second negative electrode mixture, and the first negative electrode mixture and the second negative electrode mixture are introduced into the third homogenizing device 113 to form the negative electrode coating.

Preferably, the first homogenizing device 111 comprises a first agitating drum 1111 and a first agitating device 1112; the first stirring device 1112 includes a first stirring shaft, a plurality of first stirring sections connected to an outer circumferential surface of the first stirring shaft, and a fifth rotation driving device for driving the first stirring shaft to rotate; the plurality of first stirring parts are arranged at equal intervals along the axial direction of the first stirring shaft, the first stirring device 1112 is arranged in the first stirring cylinder 1111, the axis of the first stirring cylinder 1111 and the axis of the first stirring shaft are overlapped, and the output end of the fifth rotation driving device is connected with the first stirring shaft. A part of the positive electrode material or a part of the negative electrode material is introduced into the first stirring drum 1111, and the first stirring device 1112 stirs the positive electrode material or the negative electrode material to form a first positive electrode mixture or a first negative electrode mixture. Specifically, the fifth rotational drive means includes a motor.

Preferably, the second homogenizing device 112 includes a second agitating barrel 1121 and a second agitating device 1122; the second stirring device 1122 includes a second stirring shaft, a plurality of second stirring portions connected to an outer circumferential surface of the second stirring shaft, and a sixth rotation driving device for driving the second stirring shaft to rotate; the plurality of second stirring portions are disposed at equal intervals in the axial direction of the second stirring shaft, the second stirring device 1122 is disposed in the second stirring cylinder 1121, the axis of the second stirring cylinder 1121 and the axis of the second stirring shaft are overlapped, and the output end of the sixth rotation driving device is connected to the second stirring shaft. The other part of the positive electrode material or the other part of the negative electrode material is introduced into the second stirring cylinder 1121, and the second stirring device 1122 stirs the positive electrode material or the negative electrode material to form a second positive electrode mixture or a second negative electrode mixture. Specifically, the sixth rotary drive device includes a motor.

Preferably, the third homogenizing device 113 comprises a third mixing drum 1131 and a third mixing device; the third stirring device comprises a third stirring shaft, a plurality of third stirring parts connected with the outer circumferential surface of the third stirring shaft and a seventh rotation driving device for driving the third stirring shaft to rotate; the plurality of third stirring parts are arranged at equal intervals along the axial direction of the third stirring shaft, the third stirring device is arranged in the third stirring cylinder 1131, the axis of the third stirring cylinder 1131 is overlapped with the axis of the third stirring shaft, and the output end of the seventh rotation driving device is connected with the third stirring shaft. Introducing the first positive electrode mixture and the second positive electrode mixture into a third mixing drum 1131, and mixing by a third mixing device to obtain a positive electrode coating, or introducing the first negative electrode mixture and the second negative electrode mixture into the third mixing drum 1131, and mixing by the third mixing device to obtain a negative electrode coating; specifically, the seventh rotary drive device includes a motor.

Preferably, in order to improve the working efficiency, the first mixing drum 1111 is communicated with the third mixing drum 1131 through a first material delivery pipe, and the second mixing drum 1121 is communicated with the third mixing drum 1131 through a second material delivery pipe.

Preferably, the coating mechanism 12 includes a foil conveying device that conveys the foil, and a spraying device 122 that sprays the positive-electrode paint or the negative-electrode paint on the upper surface of the foil. The foil is conveyed by the foil conveying device, and the spraying device 122 uniformly coats the upper surface of the foil with the positive coating or the negative coating to form a pole piece, specifically, the pole piece is a positive pole piece or a negative pole piece.

Preferably, the foil conveying device includes a bearing portion 1211 that bears the foil roll, a second tensioning portion 1212 that tensions the foil, a foil conveying portion 1213 that conveys the foil, and a pole piece take-up portion 1214 that takes up the pole piece. The pole piece winding part 1214 gradually winds up the foil coated with the coating, the foil conveying part 1213 enables the coating to be uniformly sprayed on the foil by the spraying device 122 to form a pole piece in the conveying process of the foil, and the second tensioning part 1212 enables the surface of the foil to be smoother; the pole piece furling part 1214 comprises a pole piece furling roller and a motor driving the pole piece furling roller to rotate.

Preferably, the spraying device 122 includes a spraying part 1221 that outputs the positive electrode paint or the negative electrode paint, and a paint storage part 1222 that stores the positive electrode paint or the negative electrode paint; the paint spraying section 1221 communicates with the paint storage section 1222 via a third delivery pipe, and the paint storage section 1222 communicates with the third mixing drum 1131 via a first connection pipe. The coating unit 1221 extracts the coating material in the coating material storage unit 1222 and applies the coating material to the upper surface of the foil.

Preferably, the spraying part 1221 includes a spraying port; the output end of the spraying port faces the upper surface of the foil. And outputting the coating to the upper surface of the foil through the spraying port.

Preferably, the drying mechanism 13 includes a drying part 131 for drying the pole piece, and a hot air blower 132 for outputting hot air to the upper surface of the pole piece; one end of the drying portion 131 forms an opening through which the pole piece passes. When the pole piece passes through the opening of the drying part 131, the hot air output by the hot air blower 132 dries the coating, so that the coating is better attached to the foil.

Preferably, in order to better adhere the paint to the foil, the rolling mechanism 14 comprises a rolling portion 141 that rolls the pole pieces.

Preferably, in order to make the coating material adhere to the foil better, the laminating part 141 includes a first laminating roller 1411 and a second laminating roller 1412; the axes of the first rolling roller 1411 and the second rolling roller 1412 are horizontally arranged and perpendicular to the conveying direction of the pole pieces, a first gap is formed between the first rolling roller 1411 and the second rolling roller 1412, the pole pieces penetrate through the first gap, the first rolling roller 1411 is in rolling connection with the upper surfaces of the pole pieces, and the second rolling roller 1412 is in rolling connection with the lower surfaces of the pole pieces.

(2) drying the positive pole piece and the negative pole piece;

(5) baking the negative single piece and the positive single piece;

Therefore, the electrostatic electret device 31 is used for performing electrostatic electret treatment on the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet in the conveying process, so that the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are charged with static electricity, mutual repulsion cannot occur interference in the conveying process, meanwhile, adhesive glue is applied to the upper surface of the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are connected together through the adhesive glue in the winding process, the internal structure is more compact and neat after the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are wound into an electric core, and the service life of the battery is prolonged.

Preferably, in the step (6), during the process of conveying the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are respectively subjected to electrostatic electret treatment, and adhesive glue is applied to the upper surface of the first diaphragm.

Preferably, the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are respectively subjected to electrostatic electret treatment through the first electrostatic electret generator 311, the second electrostatic electret generator 312, the third electrostatic electret generator 313 and the fourth electrostatic electret generator 314, so that the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are charged with static electricity and mutually exclusive in the conveying process without interference; a viscous glue is applied to the upper surface of the first membrane by a glue applicator 32.

Preferably, the first clamping part 3311 of the winding device 33 clamps the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet, the first moving driving device 3314 drives the first clamping part 3311 to elongate the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet to a desired winding length, the second clamping part 3312 clamps the tail ends of the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet, the first cutting part 3313 cuts off the respective layers, the first moving driving device 3314 drives the first clamping part 3311 and the second clamping part 3312 to move, so that the first clamping part 3311 moves into the first limiting groove and the second limiting groove of the auxiliary winding member 3321, the first rotating driving device 3317 drives the first clamping part 3311 to rotate to wind the respective layers, the first moving driving device 3314 drives the second clamping part 3312 to gradually move toward the first clamping part 3311 to match the first clamping part 3311 to complete the winding operation, the adhesive glue on the first diaphragm enables the connection between the layers to be more compact and neat after winding, after winding is finished, the tape supply part 3331 outputs a termination adhesive tape, the vacuum adsorption head of the adsorption part 3332 adsorbs the termination adhesive tape, the second cutting part 3333 cuts off a termination adhesive tape roll after the vacuum adsorption head adsorbs the termination adhesive tape, the first lifting driving device drives the vacuum adsorption head to move downwards to be matched with the first rotating driving device 3317, the termination adhesive tape roll is adhered to the tail ends of the first diaphragm, the negative pole single sheet, the second diaphragm and the positive pole single sheet to form an electric core, the auxiliary conveying belt 3322 drives the auxiliary winding part 3321 and the electric core to convey forwards, the first clamping part 3311 extends out of the electric core, and the first moving driving device 3314 drives the first clamping part 3311 and the second clamping part 3312 to return to the initial position to perform secondary winding operation.

Preferably, the positive electrode coating material and the negative electrode coating material are prepared before step (1).

Preferably, the positive electrode paint or the negative electrode paint is prepared by the glue making mechanism 11; putting part of the positive electrode raw material into a first homogenizing device 111, stirring to form a first positive electrode mixture, putting the other part of the positive electrode raw material into a second homogenizing device 112, stirring to form a second positive electrode mixture, and introducing the first positive electrode mixture and the second positive electrode mixture into a third homogenizing device 113 to form a positive electrode coating; or putting part of the negative electrode raw material into the first homogenizing device 111 and stirring to form a first negative electrode mixture, putting the other part of the negative electrode raw material into the second homogenizing device 112 and stirring to form a second negative electrode mixture, and introducing the first negative electrode mixture and the second negative electrode mixture into the third homogenizing device 113 to form the negative electrode coating.

Preferably, in step (1), the positive electrode pole piece is formed by spraying the positive electrode coating material on the foil by the spraying device 122 of the coating mechanism 12, or the negative electrode pole piece is formed by spraying the negative electrode coating material on the foil.

Preferably, in the step (2), the positive electrode plate or the negative electrode plate is dried by the drying mechanism 13; the positive electrode plate or the negative electrode plate enters from the opening of the drying part 131, and the hot air blower 132 outputs hot air to the upper surface of the positive electrode plate or the negative electrode plate to dry the positive electrode plate or the negative electrode plate.

Preferably, in step (3), the rolling mechanism 14 rolls the positive or negative electrode sheet, and the positive or negative electrode sheet passes through between the first rolling roller 1411 and the second rolling roller 1412, so that the coating on the foil is better attached to the foil, and the connection between the foil and the coating is tighter.

Preferably, in the step (4), the positive electrode pole piece or the negative electrode pole piece is slit by the slitting mechanism 4 of the slitting device 2, and the slit positive electrode single piece or negative electrode single piece is wound by the winding mechanism 5.

Preferably, the plurality of cutting devices 41 equally cut the pole piece, the first cutting portion 411 and the second cutting portion 412 of the cutting devices 41 cut the pole piece, the winding device 52 of the winding mechanism 5 winds the negative pole single piece or the positive pole single piece, and the first winding disc 5212 and the second winding disc 5222 correspond to each negative pole single piece or each positive pole single piece and wind the negative pole single piece and the positive pole single piece.

Preferably, in the step (5), the furled positive electrode single piece and negative electrode single piece are subjected to baking treatment by a baking mechanism 21; the positive electrode single pieces or the negative electrode single pieces on the first winding tray 5212 and the second winding tray 5222 are placed in a baking part to be baked, and the positive electrode single pieces and the negative electrode single pieces are baked and dried.

The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.

Claims

1. The utility model provides a low-cost long-life cylinder electricity core making devices which characterized in that: the battery cell forming device comprises a coating device for coating foil to form a pole piece, a slitting device for slitting the pole piece to form a pole piece monomer, and a forming device for winding the pole piece monomer and a diaphragm to form a battery cell;

the forming device comprises an electrostatic electret device for performing electrostatic electret treatment on each layer of the battery cell, a glue applying device for applying glue to the upper surface of the first diaphragm, and a winding device for winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet together to form the battery cell; the winding device comprises a winding part for winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, an auxiliary part for assisting the winding of the winding part, and a rubberizing part for pasting a stop gum on the wound battery cell;

the winding part comprises a first clamping part and a second clamping part which are used for clamping the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, and a first cutting part which is used for cutting the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet; the winding part comprises a first clamping part, a second clamping part, a first opening and closing driving device, a second opening and closing driving device, a first moving driving device, a first telescopic driving device, a second telescopic driving device and a first rotating driving device, wherein the first opening and closing driving device drives the first clamping part and the second clamping part to open and close; the first cutting part comprises a first upper cutter, a first lower cutter and a third opening and closing driving device for driving the upper cutter and the lower cutter to open and close;

the auxiliary part comprises an auxiliary winding part and an auxiliary conveying belt for conveying the auxiliary winding part; the auxiliary winding piece comprises a first connecting plate, a second connecting plate and a third connecting plate which are sequentially and adjacently arranged; a first limiting winding groove is formed in one side of the first connecting plate, a second limiting winding groove is formed in one side of the third connecting plate, the distance between the first connecting plate and the third connecting plate is smaller than the width dimension of the negative pole single piece, and the first limiting winding groove comprises a first stretching-in section and a first arc-shaped winding section; the second limiting winding groove comprises a second extending section and a second arc-shaped winding section; the auxiliary winding part is fixedly connected to the auxiliary conveying belt, and the conveying direction of the auxiliary conveying belt is perpendicular to the conveying direction of the first diaphragm;

the slitting device comprises a first feeding mechanism for supplying pole pieces, a slitting mechanism for slitting the pole pieces to form pole piece monomers and a winding mechanism for winding the pole piece monomers; the cutting mechanism comprises a plurality of cutting devices for cutting the pole pieces to form a plurality of positive pole single pieces or a plurality of negative pole single pieces, and the plurality of cutting devices are arranged at equal intervals along the width direction of the pole pieces; the cutting device comprises a first cutting part and a second cutting part, and the axis of the first cutting part and the axis of the second cutting part are obliquely arranged; the winding mechanism comprises a tensioning device for tensioning the single pole piece and a winding device for winding the single pole piece; the slitting device further comprises a baking mechanism for baking the wound anode single sheet and cathode single sheet.

2. The device of claim 1 for making a low-cost long-life cylindrical cell, wherein: the adhesive applying part includes a tape supplying part for supplying the termination adhesive tape roll, an adsorbing part for adsorbing the termination adhesive tape roll, and a second cutting part for cutting the termination adhesive tape roll.

3. The device of claim 2 for making a low-cost long-life cylindrical cell, wherein: the adsorption part comprises a vacuum adsorption head for adsorbing the termination adhesive tape roll; and an arc-shaped adsorption groove matched with the outer circumferential surface of the battery core is formed on the lower surface of the vacuum adsorption head.

4. The device of claim 3 for making a low-cost long-life cylindrical cell, wherein: the adsorption part also comprises a first lifting driving device for driving the vacuum adsorption head to lift.

5. The device of claim 4 for manufacturing a low-cost long-life cylindrical battery cell, which is characterized in that: the tape supply unit includes a tape winding roller for winding the termination tape roll, a first guide roller for guiding the termination tape roll, and a tape conveying roller for conveying the termination tape roll.

6. The device of claim 5 for making a low-cost long-life cylindrical cell, wherein: the second cutting part comprises a second upper cutter, a second lower cutter and a fourth opening and closing driving device for driving the second upper cutter and the second lower cutter to open and close.

7. The device of claim 6 for making a low-cost long-life cylindrical cell, wherein: the tape conveying roller is provided with a first output end for outputting the terminated tape roll, and the second cutting part is arranged on one side of the first output end.

8. The device of claim 7 for making a low-cost long-life cylindrical cell, wherein: the electrostatic electret device comprises a first electrostatic electret generator for performing electrostatic electret treatment on a first diaphragm, a second electrostatic electret generator for performing electrostatic electret treatment on a negative single sheet, a third electrostatic electret generator for performing electrostatic electret treatment on a second diaphragm, and a fourth electrostatic electret generator for performing electrostatic electret treatment on a positive single sheet.

9. The device of claim 8 for making a low-cost long-life cylindrical cell, wherein: the glue applicator includes a glue applicator portion that outputs viscous glue.

10. The device of claim 9 for making a low-cost long-life cylindrical cell, wherein: the sizing part comprises a plurality of groups of sizing brushes in contact with the upper surface of the first diaphragm, the groups of sizing brushes are arranged at equal intervals along the conveying direction of the first diaphragm, and the width dimension of each sizing brush is equal to that of the first diaphragm.

11. The apparatus of claim 10, wherein the apparatus is characterized in that: the molding apparatus further includes a first supply device supplying the first separator, a second supply device supplying the negative electrode single sheets, a third supply device supplying the second separator, and a fourth supply device supplying the positive electrode single sheets.

12. The apparatus of claim 11, wherein the apparatus is characterized in that: the first supply device includes a first guide portion that guides the first diaphragm, and a first transport portion that transports the first diaphragm.

13. The apparatus of claim 12, wherein the apparatus is characterized in that: the second feeding device comprises a second guiding part for guiding the negative single pieces and a second conveying part for conveying the negative single pieces.

14. The device of claim 13 for making a low-cost long-life cylindrical cell, wherein: the third supply device includes a third guide portion for guiding the second diaphragm, and a third transport portion for transporting the second diaphragm.

15. The apparatus of claim 14, wherein the apparatus is characterized in that: the fourth feeding device comprises a fourth guide part for guiding the single positive plates and a fourth conveying part for conveying the single positive plates.

16. The apparatus of claim 15, wherein the apparatus comprises: the forming device further comprises a limiting device for limiting the first diaphragm and the positive single sheet.

17. The apparatus of claim 16, wherein the apparatus is characterized in that: the limiting device comprises an upper limiting part for limiting the first diaphragm and a lower limiting part for limiting the anode single sheet; the first diaphragm, the negative electrode single piece, the second diaphragm and the positive electrode single piece are positioned between the upper limiting part and the lower limiting part.

18. A low-cost long-life cylindrical cell fabrication apparatus as claimed in any one of claims 1 to 17, wherein: the first cutting portion includes a first circular saw blade; the second cutting portion includes a second circular saw blade.

19. The apparatus of claim 18, wherein the apparatus is characterized in that: the inclination angle of the axis of the first disc saw blade is 45 degrees; the axis of the second circular saw blade is inclined at an angle of 135 deg.

20. The apparatus of claim 19, wherein the apparatus is characterized in that: the cutting device also comprises a first rotary driving device for driving the first circular saw blade to rotate and a second rotary driving device for driving the second circular saw blade to rotate.

21. The apparatus of claim 20, wherein the apparatus is characterized in that: the tensioning device comprises a first tensioning part for tensioning a plurality of negative single pieces or a plurality of positive single pieces.

22. The apparatus of claim 21, wherein the apparatus comprises: the first tensioning part comprises a first tensioning roller, a second tensioning roller and a third tensioning roller; first tensioning roller and third tensioning roller and anodal monolithic or the monolithic lower surface roll connection of negative pole, second tensioning roller and anodal monolithic or the monolithic upper surface roll connection of negative pole, the second tensioning roller is in between first tensioning roller and the third tensioning roller.

23. The apparatus of claim 22, wherein the apparatus is characterized in that: the furling device comprises a first furling part and a second furling part.

24. The apparatus of claim 23, wherein the apparatus comprises: the first winding part includes a first guide roller and a plurality of first winding trays; the second winding part comprises a second guide roller and a plurality of second winding discs; the second guide roller is positioned below the first guide roller.

25. The apparatus of claim 24, wherein the apparatus is characterized in that: the first winding part also comprises a third rotation driving device for driving the plurality of first winding disks to rotate; the second furling part also comprises a fourth rotation driving device which drives the plurality of second furling discs to rotate.

26. The apparatus of claim 25, wherein the apparatus is characterized in that: the baking mechanism comprises a baking part and a heating element; the baking part is internally provided with a containing cavity for containing a plurality of first coiling disks and second coiling disks, and the heating element is arranged in the containing cavity.

27. The apparatus of claim 26, wherein the apparatus is characterized in that: coating unit is including the system gum machine structure of preparation anodal coating or negative pole coating, carries out the coating mechanism of coating to the foil, carries out the stoving mechanism of drying to the pole piece to and roll the mechanism that rolls to the pole piece.

28. The apparatus of claim 27, wherein the apparatus is characterized in that: the system gum mechanism includes first refining device, second refining device and third refining device.

29. The apparatus of claim 28, wherein the apparatus is characterized in that: the first homogenizing device comprises a first stirring cylinder and a first stirring device; the first stirring device comprises a first stirring shaft, a plurality of first stirring parts connected to the outer circumferential surface of the first stirring shaft and a fifth rotation driving device for driving the first stirring shaft to rotate; a plurality of first stirring parts are arranged at equal intervals along the axial direction of the first stirring shaft, the first stirring device is arranged in the first stirring cylinder, the axis of the first stirring cylinder is overlapped with the axis of the first stirring shaft, and the output end of the fifth rotation driving device is connected with the first stirring shaft.

30. The apparatus of claim 29, wherein the apparatus is characterized in that: the second homogenizing device comprises a second stirring cylinder and a second stirring device; the second stirring device comprises a second stirring shaft, a plurality of second stirring parts connected to the outer circumferential surface of the second stirring shaft, and a sixth rotation driving device for driving the second stirring shaft to rotate; the second stirring parts are arranged at equal intervals along the axial direction of the second stirring shaft, the second stirring device is arranged in the second stirring cylinder, the axis of the second stirring cylinder is overlapped with the axis of the second stirring shaft, and the output end of the sixth rotation driving device is connected with the second stirring shaft.

31. The apparatus of claim 30, wherein the apparatus is characterized in that: the third homogenizing device comprises a third stirring cylinder and a third stirring device; the third stirring device comprises a third stirring shaft, a plurality of third stirring parts connected to the outer circumferential surface of the third stirring shaft and a seventh rotation driving device for driving the third stirring shaft to rotate; the third stirring parts are arranged at equal intervals along the axial direction of the third stirring shaft, the third stirring device is arranged in the third stirring cylinder, the axis of the third stirring cylinder is overlapped with the axis of the third stirring shaft, and the output end of the seventh rotation driving device is connected with the third stirring shaft.

32. The apparatus of claim 31, wherein the apparatus is further characterized in that: the first mixing drum is communicated with the third mixing drum through a first material conveying pipe, and the second mixing drum is communicated with the third mixing drum through a second material conveying pipe.

33. The apparatus of claim 32, wherein the apparatus is characterized in that: the coating mechanism comprises a foil conveying device for conveying the foil and a spraying device for spraying the anode coating or the cathode coating on the upper surface of the foil.

34. The apparatus of claim 33, wherein the apparatus is characterized in that: the foil conveying device comprises a bearing part for bearing a foil roll, a second tensioning part for tensioning the foil, a foil conveying part for conveying the foil, and a pole piece rolling part for rolling the pole piece.

35. The apparatus of claim 34, wherein the apparatus is characterized in that: the spraying device comprises a spraying part for outputting the anode paint or the cathode paint and a paint storage part for storing the anode paint or the cathode paint; the spraying part is communicated with the paint storage part through a third conveying pipe, and the paint storage part is communicated with the third mixing drum through a first connecting pipe.

36. The apparatus of claim 35, wherein the apparatus is characterized in that: the spraying part comprises a spraying opening; the output end of the spraying port faces the upper surface of the foil.

37. The apparatus of claim 36, wherein the apparatus is characterized in that: the drying mechanism comprises a drying part for drying the pole piece and the coating and an air heater for outputting hot air to the upper surface of the pole piece; one end of the drying part forms an opening for the pole piece to pass through.

38. The apparatus of claim 37, wherein the apparatus is characterized in that: the rolling mechanism comprises a rolling part for rolling the pole pieces.

39. The apparatus of claim 38, wherein the apparatus is characterized in that: the rolling part comprises a first rolling roller and a second rolling roller; the axis level of first roller and second roller sets up and is mutually perpendicular with the direction of delivery of pole piece, first roller and second have the first clearance that the pole piece passed between the roller, the upper surface roll connection of first roller and pole piece, the second roller rolls the lower surface roll connection of roller and pole piece.

40. A manufacturing process of the low-cost long-life cylindrical battery cell manufacturing device of any one of claims 1 to 39 is characterized by comprising the following steps:

(2) drying the positive pole piece and the negative pole piece;

(5) baking the negative single piece and the positive single piece;

41. The process of claim 40, wherein: in the step (6), in the process of conveying the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are respectively subjected to electrostatic electret treatment, and adhesive glue is applied to the upper surface of the first diaphragm.

42. The process of claim 41, wherein: the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are subjected to electrostatic electret treatment through the first electrostatic electret generator, the second electrostatic electret generator, the third electrostatic electret generator and the fourth electrostatic electret generator respectively, so that the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are charged with static electricity and mutually exclusive in the conveying process without interference; an adhesive paste is applied to the upper surface of the first membrane by a paste application device.

43. The process of claim 42, wherein: the first clamping part of the winding device clamps the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first moving driving device drives the first clamping part to elongate the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to the length required to be wound, the second clamping part clamps the tail ends of the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first cutting part cuts off each layer, the first moving driving device drives the first clamping part and the second clamping part to move, so that the first clamping part moves into the first limiting groove and the second limiting groove of the auxiliary winding part, the first rotating driving device drives the first clamping part to rotate to wind each layer, the first moving driving device drives the second clamping part to gradually approach the first clamping part to be matched with the first clamping part to complete the winding operation, the adhesive glue on the first diaphragm enables the connection between each layer to be more compact and neat after the winding, after the coiling is finished, after the tape supply part outputs the termination adhesive tape, the vacuum adsorption head of the adsorption part adsorbs the termination adhesive tape, the second cutting part cuts off the termination adhesive tape roll after the vacuum adsorption head adsorbs the termination adhesive tape, the first lifting driving device drives the vacuum adsorption head to move downwards to be matched with the first rotary driving device, the termination adhesive tape roll is adhered to the first diaphragm, the negative electrode single sheet, the tail ends of the second diaphragm and the positive electrode single sheet form an electric core, the auxiliary conveying belt drives the auxiliary coiling part and the electric core to convey forwards, the first clamping part extends out of the electric core, and the first movable driving device drives the first clamping part and the second clamping part to return to the initial position to perform secondary coiling operation.

44. The manufacturing process of claim 43, wherein: before the step (1), a positive electrode paint and a negative electrode paint are prepared.

45. The process of claim 44, wherein: preparing a positive coating or a negative coating by a glue making mechanism; placing part of the positive electrode raw materials into a first homogenizing device and stirring to form a first positive electrode mixture, placing the other part of the positive electrode raw materials into a second homogenizing device and stirring to form a second positive electrode mixture, and introducing the first positive electrode mixture and the second positive electrode mixture into a third homogenizing device to form a positive electrode coating; or putting part of the negative electrode raw materials into a first homogenizing device and stirring to form a first negative electrode mixture, putting the other part of the negative electrode raw materials into a second homogenizing device and stirring to form a second negative electrode mixture, and introducing the first negative electrode mixture and the second negative electrode mixture into a third homogenizing device to form the negative electrode coating.

46. The process of claim 45, wherein: in the step (1), a spraying device of the coating mechanism sprays positive coating on the foil to form a positive pole piece, or sprays negative coating on the foil to form a negative pole piece.

47. The process of claim 46, wherein: in the step (2), drying the positive pole piece or the negative pole piece through a drying mechanism; the positive pole piece or the negative pole piece enters from the opening of the drying part, and the hot air blower outputs hot air to the upper surface of the positive pole piece or the negative pole piece to dry the positive pole piece or the negative pole piece.

48. The process of claim 47, wherein: in the step (3), the rolling mechanism is used for rolling the positive pole piece or the negative pole piece, and the positive pole piece or the negative pole piece passes through the first rolling roller and the second rolling roller, so that the coating on the foil is better attached to the foil, and the connection between the foil and the coating is tighter.

49. The process of claim 48, wherein: in the step (4), the positive pole piece or the negative pole piece is cut by a cutting mechanism of the cutting device, and the cut positive pole single piece or negative pole single piece is wound by a winding mechanism.

50. The process of claim 49, wherein: the pole pieces are equally cut by the plurality of cutting devices, the pole pieces are cut by a first cutting part and a second cutting part of the cutting devices, the negative pole single pieces or the positive pole single pieces are wound by a winding device of the winding mechanism, the first winding disc and the second winding disc correspond to the negative pole single pieces or the positive pole single pieces, and the negative pole single pieces and the positive pole single pieces are wound.

51. The process of claim 50, wherein: in the step (5), the coiled positive single pieces and negative single pieces are baked through a baking mechanism; and placing the positive single pieces or the negative single pieces on the first coiling disc and the second coiling disc into a baking part for baking, and baking and drying the positive single pieces and the negative single pieces.