CN115224349A - Composite battery core winding equipment for composite after cutting and production method of composite battery core - Google Patents

Abstract

The invention relates to a composite battery cell winding device for composition after cutting and a production method of the composite battery cell, and the device comprises an unwinding assembly, a cutting rubberizing assembly, a deviation correcting assembly, a tension control assembly, a diaphragm unwinding assembly, a composite assembly, a detection assembly, a feeding assembly and a winding assembly, wherein the unwinding assembly unwinds a first material roll to the cutting rubberizing assembly, the cutting rubberizing assembly cuts the first material roll, the ends of the two cut first material rolls are adhered through adhesive gummed paper, the two cut first material rolls are moved to the deviation correcting assembly and the tension control assembly and then transferred to the composite assembly, the two diaphragms are unwound from the diaphragm unwinding assembly to the two ends of the material roll, the composite assembly compounds diaphragms to the two ends of the material roll to form a composite material roll, the composite material roll is conveyed to the winding assembly after passing through the detection assembly and the tension control assembly and then is unwound, the second material roll is unwound by the deviation correcting assembly, the tension control assembly and the feeding assembly and then is conveyed to the winding assembly, and the winding assembly winds the composite material roll and the second material roll to form the battery cell.

Description

Composite battery core winding equipment for composite after cutting and production method of composite battery core

Technical Field

The invention relates to the technical field of lithium battery production, in particular to a composite battery cell winding device for cutting and compounding and a production method of the composite battery cell.

Background

Lithium ion batteries are a favorite of the energy community because of their advantages of high energy density, good cycle performance, long service life, safety, environmental protection, no memory, etc. Nowadays, lithium ion batteries have been successfully applied to the fields of portable electronic products, electric automobiles and aerospace, and become a research hotspot of new energy materials. The lithium ion battery has a winding type structure and a laminated structure.

The winding core of the winding type battery cell is generally formed by winding a positive electrode sheet, a negative electrode sheet and a diaphragm after forming tabs by using a winding machine. The problem that exists now is, after coiling and accomplishing an electric core, need cut off the pole piece, however after cutting off the pole piece, can produce the burr, and the diaphragm can be punctureed to these burrs, leads to electric core short circuit, and can produce the condition of crumpling after the diaphragm is compound, and these all can influence the quality of electric core to need to shut down and carry out the coiling after the fixed clamp is pressed from both sides to the diaphragm head through rolling up the interior clamp of needle, consequently roll up the needle winding process and can not go on in succession, thereby influence production efficiency.

Disclosure of Invention

The invention mainly aims to provide a composite battery cell winding device for cutting and compounding and a production method of the composite battery cell, so as to solve the technical problems and improve the winding quality and efficiency.

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

the utility model provides a decide compound electric core coiling equipment of back complex, including first unreel the subassembly, decide the rubberizing subassembly, first deviation control subassembly, first tension control subassembly, diaphragm unreel subassembly, compound subassembly, determine module, second tension control subassembly, second unreel subassembly, second deviation control subassembly, third tension control subassembly, pay-off subassembly and coiling subassembly, first unreel the subassembly with first material book unreel to decide the rubberizing subassembly, decide the rubberizing subassembly and decide first material book and unreel to through laminating adhesive tape will cut the tip adhesion of two sections first material book after the off, and adhesion a terminal surface or both ends face, move in proper order afterwards extremely first deviation control subassembly with transfer extremely behind the first tension control subassembly compound subassembly, two sections diaphragms are followed material book and are rolled up the material and unreel the subassembly and unreel to compound subassembly, and arrange the both ends of first material book, compound subassembly compounds the both ends of diaphragm to first material book and form compound, compound material book process detect subassembly with behind the second tension control subassembly, the coiling subassembly, the second material book unreels the subassembly and conveys to the second winding subassembly and the second tension control subassembly in proper order the winding subassembly and coil the deviation control subassembly and coil the pay-off and convey to the second winding subassembly.

As a preferred technical scheme, the coiling subassembly goes into piece structure, winding structure, cutter structure, pastes tail glue structure and blanking structure including first piece structure, second, first piece structure receipt composite material book of going into is rolled up and is conveyed to winding structure, the second goes into piece structure receipt second material book of receiving and conveys to winding structure, winding structure roll up the composite material book with the second material is rolled up and is formed electric core, cutter structure is rolled up the composite material and is decided, paste the tail glue structure and paste the tail glue in electric core surface, blanking structure will accomplish the electric core unloading of pasting the tail glue and to winding structure material loading adhesive tape.

As a preferred technical scheme, the first sheet feeding structure comprises a sheet feeding detection structure and a sheet feeding deviation rectifying structure, the sheet feeding detection structure detects the position of the composite material roll, and the sheet feeding deviation rectifying structure rectifies deviation of the composite material roll.

As a preferred technical scheme, the first unwinding assembly comprises an unwinding structure, an unwinding buffer structure and a brush dust removal structure, the unwinding structure unwinds the first material roll, and the first material roll is transmitted to the brush dust removal structure through the unwinding buffer structure to clean and remove dust on the surface of the first material roll.

As a preferred technical scheme, decide rubberizing subassembly including deciding structure and rubberizing structure, decide the structure and decide first material book end, the rubberizing structure is with the both ends adhesion after first material book end is cut.

As a preferred technical solution, the first tension control assembly includes a tension control structure, a tension sensor and a material roll length measuring structure, the material roll length measuring structure detects the position of the first material roll, the tension sensor senses the tension of the first material roll, and the tension control structure adjusts the tension of the first material roll.

As a preferred technical scheme, the composite assembly comprises a film combining structure, a preheating structure and a composite structure, wherein the film combining structure presses the membrane on two sides of the first material roll, the preheating structure preheats the membrane in advance, and the composite structure compounds the first material roll and the membrane to form the composite material roll.

As a preferred technical scheme, the detection component comprises a first detection structure, a second detection structure and a detection cache structure, wherein the first detection structure detects one side of the composite material roll, the second detection structure detects the other side of the composite material roll, and the detection cache structure caches the composite material roll.

As a preferred technical scheme, the feeding assembly comprises a feeding deviation rectifying structure, an embossing structure and a feeding structure, the feeding deviation rectifying structure rectifies the deviation of the second material roll, the embossing structure presses lines on the second material roll, and the feeding structure transfers the second material roll to the winding assembly.

The invention also provides another scheme, and the production method of the composite battery cell comprises the following steps:

s1, unwinding a first material roll, caching the first material roll, and removing dust on two end faces of the first material roll;

s2, cutting the first material roll, adhering the end parts of the two sections of the first material rolls through adhesive tapes, and adhering the adhesive tapes to one end surface or two end surfaces of the first material roll;

s3, dragging the first material roll and buffering the first material roll;

s4, correcting the first material roll;

s5, dragging the first material roll, detecting and adjusting the tension of the first material roll to keep constant;

s6, measuring the length of the first material roll;

s7, unwinding the diaphragm, and detecting and adjusting the tension of the diaphragm to keep constant;

s8, measuring the length of the diaphragm, and determining the position of the diaphragm;

s9, prepressing the diaphragm in the S8 to two sides of the first material roll in the S6, preheating, and rolling and compounding to form a composite material roll;

s10, detecting two ends of the composite material roll, buffering the composite material roll, and identifying and removing the composite material roll which fails;

s11, measuring the length of the composite material roll and determining the position of the composite material roll;

s12, dragging the composite material roll, detecting and adjusting the tension of the first material roll to keep constant;

s13, correcting the composite material roll before winding and transmitting the composite material roll to a winding station;

s14, unwinding the second material roll, caching the second material roll, and removing dust on two end faces of the second material roll;

s15, correcting the second material roll, detecting and adjusting the tension of the second material roll to keep constant;

s16, measuring the length of the second material roll, determining the position of the second material roll, and performing secondary deviation correction on the second material roll;

s17, cutting the second material roll, correcting the deviation, and transmitting the second material roll to a winding station;

s18, winding the composite material roll of the S13 and the second material roll of the S17 on a winding station, cutting the composite material roll to form a battery cell, and transmitting the battery cell to a rubberizing station;

s19, pasting gummed paper on the battery cell at a gumming station, and transmitting to a blanking station;

and S20, blanking the battery cell after the rubberizing is finished on a blanking station.

The invention has the beneficial effects that: the winding mode is that firstly, the diaphragms are compounded to two ends of the first material roll to form the composite material roll, the rigidity of the first material roll can be enhanced, the first material roll is prevented from being wrinkled during winding, powder does not fall off at corners of the battery core, the positive and negative electrode head regularity is improved, the quality and the safety of the battery core are improved, gummed paper is pasted at the cutting position of the material roll to ensure that burrs of a fracture of the material roll cannot leak and pierce the diaphragms, the end part of the material roll cannot be wound, meanwhile, the end part of the first material roll cannot be wound, the battery core formed by winding the composite material roll is adopted, a certain length of diaphragms exist between the two material rolls, the normal operation of a subsequent winding process is ensured, the compounding efficiency is improved, the detection assembly can detect the wrinkling condition of the composite material roll, poor products are identified and eliminated, the winding assembly does not need to stop to cut the end part of the composite material roll, the end part of the composite material roll is fixed, and the winding efficiency can be improved.

Drawings

Fig. 1 is a schematic structural diagram of a composite battery cell winding apparatus for cutting and compounding according to the present invention;

fig. 2 is a schematic view of a part of the structure of the composite battery cell winding device after cutting according to the present invention;

fig. 3 is a schematic diagram of a partial structure of the composite battery cell winding device after cutting according to the present invention;

fig. 4 is a schematic end view of a composite cell according to the present invention;

fig. 5 is a process flow diagram of a composite battery cell according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 4, a composite battery cell winding apparatus after cutting comprises a first unwinding assembly 1, a cutting and rubberizing assembly 2, a first deviation-correcting assembly 3, a first tension-controlling assembly 4, a first diaphragm unwinding assembly 5, a second diaphragm unwinding assembly 6, a composite assembly 7, a detecting assembly 8, a second tension-controlling assembly 9, a second unwinding assembly 11, a second deviation-correcting assembly 12, a third tension-controlling assembly 13, a feeding assembly 14, a winding assembly 15, a blanking belt line 16 and a pre-pressing assembly 17, wherein the first unwinding assembly 1 unwinds a first material roll a to the cutting and rubberizing assembly 2, the cutting and rubberizing assembly 2 cuts the first material roll a, and adheres the end portions of the two sections of the first material roll a after cutting through an adhesive paper e, and adheres one end surface or two end surfaces, and then sequentially moves to the first deviation-correcting assembly 3 and the second tension-controlling assembly 4 and then moves to the composite assembly 7, two sections of diaphragms b are respectively unreeled from a first diaphragm unreeling assembly 5 and a second diaphragm unreeling assembly 6 to a composite assembly 7 and are arranged at two ends of a first material roll a, the composite assembly 7 compounds the diaphragms b to the two ends of the first material roll a to form a composite material roll c, the composite material roll c passes through a detection assembly 9 and a second tension control assembly 9 and is conveyed to a reeling assembly 15, the second unreeling assembly 11 unreels a second material roll d, the second material roll d sequentially passes through a second deviation correcting assembly 12, a third tension control assembly 13 and a feeding assembly 14 and is conveyed to the reeling assembly 15, the reeling assembly 15 winds the composite material roll c and the second material roll d to form a battery core and then unloads the battery core onto an unloading belt line 16, the unloading belt line 16 moves the battery core to a prepressing assembly 17 for prepressing, the winding material roll firstly compounds the diaphragms b to the two ends of the first material roll to form the composite material roll c, the rigidity of the first material roll a can be enhanced, crumpling when the first material roll a is wound is avoided, powder does not fall at the corner of the battery core, the regularity of the heads of the positive electrode and the negative electrode is improved, the quality and the safety of the battery core are improved, the gummed paper c can be pasted at the cutting position of the material roll a to ensure that fracture burrs of the material roll a cannot pierce through the diaphragm b in an external leakage mode, the end portion of the material roll a cannot be wound, meanwhile, the end portion of the first material roll a cannot be wound, the battery core formed by winding the composite material roll c is adopted, the diaphragm b with a certain length exists between the two material rolls a, normal operation of a subsequent winding process is ensured, the composite efficiency is improved, the crumpling condition of the composite material roll c can be detected by the detection assembly 8, defective products are identified and eliminated, the winding assembly 15 does not need to stop to cut the composite material roll c and fix the end portion of the composite material roll c, and the winding efficiency can be improved. In this embodiment, the first roll a and the second roll d are pole pieces or foils, the first roll a is preferably a negative pole piece, the second roll d is preferably a positive pole piece, and the composite roll c is a composite pole piece formed by compounding two layers of separators b on two end faces of the negative pole piece.

As shown in fig. 2 and fig. 4, in particular, the first unwinding assembly 1 includes a first unwinding structure 101, a first unwinding buffer structure 102, and a first brush dust removing structure 103, where the first unwinding structure 101 unwinds the first material roll a, and the first material roll a is transmitted to the first brush dust removing structure 103 through the first unwinding buffer structure 102 to clean and remove dust on the surface of the first material roll a.

It is specific, decide rubberizing subassembly 2 including deciding structure and rubberizing structure, decide the structure and will decide from first material book a that unreels subassembly 1 and unreel and form two sections first material book a, rubberizing structure laminating adhesive tape e is with the tip adhesion of two sections first material book a, and adhesive tape e can laminate the first material book a terminal surface or the both ends face, makes material book a can compound in succession.

Specifically, the first deviation rectifying assembly 3 comprises a first deviation rectifying structure 31 and a first traction structure 32, the first deviation rectifying structure 31 can rectify the deviation of the first material roll a after unwinding, the composite precision of the first material roll a and the diaphragm b is ensured, and the first traction structure 32 pulls the first material roll a to the first tension control assembly 3.

Specifically, the first tension control assembly 4 includes a first tension control structure 41, a first tension sensor 42 and a first material roll length measuring structure 43, the first material roll a passes through the first tension control structure 41, the first tension sensor 42 and the first material roll length measuring structure 43 in sequence, the first material roll length measuring structure 43 detects the position of the first material roll a, the first tension sensor 42 senses the tension of the first material roll a, and the first tension control structure 41 adjusts the tension of the first material roll a.

Specifically, the first membrane unwinding assembly 5 comprises a first membrane unwinding structure 51, a first membrane tension control structure 52 and a membrane length measuring structure 53, the membrane b is unwound through the first membrane unwinding structure 51, the membrane b is transmitted to one side of the first material coil a through the first membrane tension control structure 52 and the membrane length measuring structure 53, the first membrane tension control structure 52 adjusts the tension of the membrane b, and the membrane length measuring structure 53 detects the position of the membrane b.

Specifically, the second membrane unwinding assembly 6 includes a second membrane unwinding structure 61 and a second membrane tension control structure 62, the membrane b is unwound through the second membrane unwinding structure 61, and is transmitted to the other side of the first material roll a through the second membrane tension control structure 62, and the second membrane tension control structure 62 adjusts the tension of the membrane b.

Specifically, the composite assembly 7 comprises a combining structure 71, a preheating structure 72 and a composite structure 73, the combining structure 71 pre-presses two layers of diaphragms b on two sides of a first material roll a in advance, it is guaranteed that the relative positions of the first material roll a and the diaphragms b are not changed, the preheating structure 72 preheats the diaphragms b in advance, the composite linear speed can be improved, the composite efficiency is further improved, the composite structure 73 compounds the first material roll a and the diaphragms b to form a composite material roll c, and it is guaranteed that the first material roll a and the diaphragms b are not shed, arched and free of bubbles after being compounded. The composite structure 73 comprises an electromagnetic heating shaft, a main drive motor, a dust removal scraper and a wiping roller, wherein the main drive motor drives the electromagnetic heating shaft to rotate, the first material roll a and the diaphragm b are compounded between the two electromagnetic heating shafts to form a composite material roll c, and the dust removal scraper and the wiping roller remove dust from the electromagnetic heating shaft, so that the electromagnetic heating shaft is kept clean, and dust and particles adhered in the compounding process are reduced, and the compounding effect is influenced.

Specifically, the detection component 8 includes a first detection structure 81, a second detection structure 82 and a detection buffer structure 83, the first detection structure 81 detects one side of the composite material roll c, the second detection structure 82 detects the other side of the composite material roll c, the first detection structure 81 and the second detection structure 82 detect that the composite material roll c is wrinkled, the composite material roll c with wrinkles is regarded as a defective product, and the detection buffer structure 83 buffers the composite material roll c.

As shown in fig. 3 and fig. 4, in detail, the second tension control assembly 9 includes a second tension control structure 91, a second tension sensor 92 and a second material roll length measuring structure 93, the composite material roll c passes through the second tension control structure 91, the second tension sensor 92 and the second material roll length measuring structure 93 in sequence, the second material roll length measuring structure 93 detects the position of the composite material roll c, the second tension sensor 92 senses the tension of the composite material roll c, and the second tension control structure 91 adjusts the tension of the composite material roll c.

Specifically, the second unwinding assembly 11 includes a second unwinding structure 111, a second unwinding buffer structure 112 and a second brush dust removal structure 113, the second unwinding structure 111 unwinds the second material roll d, and the second material roll d is transmitted to the second brush dust removal structure 113 through the second unwinding buffer structure 112 to clean and remove dust on the surface of the second material roll d.

Specifically, the second deviation rectifying assembly 12 includes a second deviation rectifying structure 121 and a second traction structure 122, the second deviation rectifying structure 121 can rectify the deviation of the second material roll d after unwinding, so as to ensure the winding precision of the second material roll d, and the second traction structure 122 pulls the second material roll d to the third tension control assembly 13.

Specifically, the third tension control assembly 13 includes a third tension control structure 131, a third tension sensor 132 and a third material roll length measuring structure 133, the second material roll d passes through the third tension control structure 131, the third tension sensor 132 and the third material roll length measuring structure 133 in sequence, the third material roll length measuring structure 133 detects the position of the second material roll d, the third tension sensor 132 senses the tension of the second material roll d, and the third tension control structure 131 adjusts the tension of the second material roll d.

Specifically, the feeding assembly 14 includes a feeding deviation rectifying structure 141, an embossing structure 142 and a feeding structure 143, the feeding deviation rectifying structure 141 rectifies the deviation of the second material coil d to ensure the position accuracy of the second material coil d during feeding, the embossing structure 142 presses grains on the second material coil d, and the feeding structure 143 transfers the second material coil d to the winding assembly 15 for winding.

Specifically, the winding assembly 15 includes a first sheet feeding structure 151, a second sheet feeding structure 152, a winding structure 157, a cutter structure 153, a tail glue pasting structure 154, a blanking structure 155, and an alignment degree detection structure 156, the first sheet feeding structure 151 receives the composite material roll c, performs deviation correction, and transmits the composite material roll c to the winding structure 157, the second sheet feeding structure 152 receives the second material roll d, performs deviation correction, and transmits the second material roll d to the winding structure 157, the alignment degree detection structure 156 detects whether the composite material roll c and the second material roll d are aligned, the winding structure 157 winds the composite material roll c and the second material roll d to form a battery cell, the cutter structure 153 cuts only the composite two-side diaphragm b on the composite material roll c, the tail glue pasting structure 154 pastes the tail glue on the surface of the battery cell, and the blanking structure 155 blanks the battery cell which finishes tail glue pasting, and charges the tail glue e to the winding structure 157. The first sheet feeding structure 151 comprises a sheet feeding detection structure 1511 and a sheet feeding deviation rectifying structure 1512, the sheet feeding detection structure 1511 detects the position of the composite material roll c, and the sheet feeding deviation rectifying structure 1512 rectifies the deviation of the composite material roll c. Winding structure 157 can directly start up through the tip that adhesive tape e adhesion compound material rolled up c, need not to shut down the tip of fixed compound material rolled up c, can save down time, improves winding efficiency, and cutter structure 153 can cut off compound material rolled up c at the in-process that winding structure 157 traded the station, need not to shut down and cuts out, improves winding efficiency.

As shown in fig. 5, the present invention further provides another embodiment, and a method for producing the above composite battery cell includes the following steps:

step 1, unwinding a first material roll a, caching the first material roll a, removing dust on two end faces of the first material roll a, avoiding the dust from adhering to the surface of the first material roll a, and keeping the surface of the first material roll a flat;

step 2, cutting the first material roll a, and adhering the end parts of the two sections of the first material rolls a through adhesive tapes e to enable the first material rolls a to be continuously wound, wherein the adhesive tapes e are adhered to one end surface or two end surfaces of the first material rolls a;

step 3, the first material roll a is pulled, and is buffered, so that the first material roll a is prevented from being torn or wrinkled due to the fact that the cutting speed and the compounding speed are asynchronous;

step 4, correcting the first material roll a to ensure that the relative position of the first material roll a after being cut remains unchanged;

step 5, drawing the first material roll a, detecting and adjusting the tension of the first material roll a to keep constant so as to ensure the composite quality;

step 6, measuring the length of the first material roll a, and determining the position of the first material roll a to ensure that the position of the diaphragm b is consistent with that of the first material roll a;

step 7, unwinding the diaphragm b, detecting and adjusting the tension of the diaphragm b to keep constant so as to ensure the quality of compounding;

step 8, measuring the length of the membrane b, and determining the position of the membrane b to ensure that the position of the membrane b is consistent with that of the first material roll a;

step 9, prepressing the diaphragm b in the step 8 to the two sides of the first material roll a in the step 6, preheating, and rolling and compounding to form a composite material roll c;

step 10, detecting two ends of the composite material roll c and buffering the composite material roll c, so that the composite material roll c which is not up to the limit can be identified and eliminated, and the buffering of the composite material roll c can avoid tearing or wrinkling of the first material roll a caused by asynchronous cutting and compounding speeds;

step 11, measuring the length of the composite material roll c, and determining the position of the composite material roll c to ensure that the position of the composite material roll c is consistent with that of the second material roll d;

step 12, drawing the composite material roll a, detecting and adjusting the tension of the first material roll a to keep constant so as to ensure the composite quality;

13, correcting the composite material coil c before winding and transmitting the composite material coil c to a winding station to ensure that the relative position of the composite material coil c before winding is kept unchanged;

step 14, unwinding the second material roll d, caching the second material roll d, removing dust on two end faces of the second material roll d, and preventing the surface of the second material roll d from being adhered with dust so as to keep the surface of the second material roll d flat;

step 15, correcting the second material roll d to ensure that the position of the second material roll d after unreeling is kept unchanged, and detecting and adjusting the tension of the second material roll d to keep constant so as to ensure the composite quality;

step 16, measuring the length of the second material roll d, determining the position of the second material roll d to ensure that the positions of the second material roll d and the composite material roll c are consistent, and performing secondary deviation correction on the second material roll d;

step 17, cutting the second material roll d, correcting the deviation, and transmitting the second material roll d to a winding station;

step 18, winding and cutting the composite material roll c in the step 13 and the second material roll d in the step 17 on a winding station to form a battery cell, and transmitting the battery cell to a rubberizing station;

step 19, pasting gummed paper on the battery cell at a gumming station, and transmitting the battery cell to a blanking station;

and 20, blanking the battery cell after the rubberizing is finished on a blanking station.

The above-described embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles of the invention described in the claims should be included in the claims.

Claims (10)

1. The utility model provides an decide compound electric core coiling equipment of back complex, its characterized in that, including first unreel the subassembly, decide rubberizing subassembly, first tension control subassembly, diaphragm unreel subassembly, compound subassembly, detection subassembly, second tension control subassembly, second unreel subassembly, second deviation control subassembly, third tension control subassembly, pay-off subassembly and coiling subassembly, first unreel the subassembly with first material book unreel to decide the rubberizing subassembly, decide the rubberizing subassembly and decide first material book to through laminating adhesive tape will cut off the tip adhesion of two sections first material rolls after, and adhesion a terminal surface or both ends face, move in proper order afterwards extremely first material book with transfer behind the first tension control subassembly to material book is rolled up, two sections diaphragms are followed the diaphragm unreels the subassembly unreels to compound subassembly, and place the both ends of first material book in, compound subassembly compounds the both ends of diaphragm to first material book and forms compound material book, compound material book process detection subassembly with second tension control subassembly after, convey to the coiling subassembly, second tension control subassembly conveys the second winding subassembly to the second winding subassembly and coil the deviation control subassembly and coil the second winding subassembly and form compound material book after the winding subassembly.

2. The compound electricity core coiling equipment after deciding of claim 1, characterized in that, the coiling subassembly is including first income piece structure, second income piece structure, coiling structure, cutter structure, paste the tail gum structure and blanking structure, first income piece structure is received compound material and is rolled up and convey to coiling structure, the second is gone into piece structure and is received the second and rolled up and convey to coiling structure, coiling structure roll compound material with the second material rolls up and forms electric core, cutter structure is decided compound material roll, paste the tail gum structure and paste the tail gum and attach on electric core surface, blanking structure will accomplish the electric core unloading of pasting the tail gum and to coiling structure material loading adhesive tape.

3. The compound battery core coiling equipment after deciding of claim 2, characterized in that, first income piece structure is including going into piece detection structure and going into piece structure of rectifying, go into piece detection structure and detect the position that the compound material was rolled up, go into piece structure of rectifying and rectify the compound material and roll.

4. The compound electricity core coiling equipment after deciding of claim 3, characterized in that, first subassembly of unreeling is including unreeling the structure, unreeling buffer structure and brush dust removal structure, unreel the structure and unreel first material and roll up, first material is rolled up the buffer structure transmission and is arrived brush dust removal structure cleans the dust removal to the surface of first material of rolling up.

5. The post-cutting composite electrical core winding equipment of claim 4, wherein the post-cutting adhesive assembly comprises a cutting structure and an adhesive structure, the cutting structure cuts the first material roll, and the adhesive structure adheres the two cut ends of the first material roll.

6. The post-severance composite cell winding apparatus of claim 5 wherein the first tension control assembly comprises a tension control structure, a tension sensor and a roll length measuring structure, the roll length measuring structure detecting the position of the first roll, the tension sensor sensing the tension of the first roll, the tension control structure adjusting the tension of the first roll.

7. The post-cutting composite electrical core winding equipment of claim 6, wherein the composite assembly comprises a film combining structure, a preheating structure and a composite structure, the film combining structure compresses the membrane on two sides of the first material roll, the preheating structure preheats the membrane in advance, and the composite structure combines the first material roll and the membrane to form the composite material roll.

8. The compound electricity core coiling equipment after deciding of claim 7, characterized in that, detecting element is including first detection structure, second detection structure and detection buffer memory structure, first detection structure detects the one side that the compound material was rolled up, the second detects the another side that the structure detected the compound material and was rolled up, it buffers to the compound material book to detect buffer memory structure.

9. The compound electricity core coiling equipment after deciding of claim 3, characterized in that, the pay-off subassembly is including pay-off structure, knurling structure and the pay-off structure of rectifying, the pay-off structure of rectifying rectifies to the second material and rolls up, knurling structure is rolled up the second material and is pressed the line, the pay-off structure with the second material roll transfer to the coiling subassembly.

10. A method of producing a composite cell for use in a post-severing composite cell winding apparatus according to any of claims 1 to 9, comprising the steps of:

s1, unwinding a first material roll, caching the first material roll, and removing dust on two end faces of the first material roll;

s2, cutting the first material roll, adhering the end parts of the two sections of the first material rolls through adhesive tapes, and adhering the adhesive tapes to one end surface or two end surfaces of the first material roll;

s3, drawing the first material roll and buffering the first material roll;

s4, correcting the first material roll;

s5, drawing the first material roll, detecting and adjusting the tension of the first material roll to keep constant;

s6, measuring the length of the first material roll;

s7, unwinding the diaphragm, and detecting and adjusting the tension of the diaphragm to keep constant;

s8, measuring the length of the diaphragm and determining the position of the diaphragm;

s9, prepressing the diaphragm in the S8 to two sides of the first material roll in the S6, preheating, and rolling and compounding to form a composite material roll;

s10, detecting two ends of the composite material roll, buffering the composite material roll, and identifying and removing the composite material roll which fails;

s11, measuring the length of the composite material roll and determining the position of the composite material roll;

s12, dragging the composite material roll, detecting and adjusting the tension of the first material roll to keep constant;

s13, correcting the composite material roll before winding and transmitting the composite material roll to a winding station;

s14, unwinding the second material roll, caching the second material roll, and removing dust on two end faces of the second material roll;

s15, correcting the second material roll, detecting and adjusting the tension of the second material roll to keep constant;

s16, measuring the length of the second material roll, determining the position of the second material roll, and performing secondary deviation correction on the second material roll;

s17, cutting the second material roll, correcting the deviation, and transmitting the second material roll to a winding station;

s18, winding the composite material roll of the S13 and the second material roll of the S17 on a winding station, cutting the composite material roll to form a battery cell, and transmitting the battery cell to a rubberizing station;

s19, pasting gummed paper on the battery cell at a gumming station, and transmitting to a blanking station;

and S20, blanking the battery cell after the rubberizing is finished on a blanking station.

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