CN116683014A - Method for coating square shell battery with film prepared in advance - Google Patents
Method for coating square shell battery with film prepared in advance Download PDFInfo
- Publication number
- CN116683014A CN116683014A CN202310971558.3A CN202310971558A CN116683014A CN 116683014 A CN116683014 A CN 116683014A CN 202310971558 A CN202310971558 A CN 202310971558A CN 116683014 A CN116683014 A CN 116683014A
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- China
- Prior art keywords
- film
- battery
- pasting
- insulating film
- folding
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000000576 coating method Methods 0.000 title claims abstract description 28
- 239000011248 coating agent Substances 0.000 title claims description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims description 151
- 239000000463 material Substances 0.000 claims description 29
- 230000007306 turnover Effects 0.000 claims description 26
- 238000005520 cutting process Methods 0.000 claims description 16
- 238000009966 trimming Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 241001061132 Eutaeniophorus sp. 033-Miya Species 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 238000009501 film coating Methods 0.000 abstract description 11
- 239000007888 film coating Substances 0.000 abstract description 11
- 238000009776 industrial production Methods 0.000 abstract description 3
- 239000000969 carrier Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
- B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
- B65G47/248—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/16—Advancing webs by web-gripping means, e.g. grippers, clips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/14—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors
- H01M50/145—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors for protecting against corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a square-shell battery coating method for preparing a film in advance, which comprises film preparation, film transferring, feeding, large-surface film pasting, folding and pasting side surfaces, folding and pasting bottom surfaces, folding and pasting top surfaces and discharging. According to the square-shell battery film coating method for preparing films in advance, the film preparation process of the insulating film belt is separated from the feeding film coating process of the battery to prepare films in advance, the film preparation-film moving process and the feeding-large-surface film pasting process can be simultaneously carried out, the insulating film belt is pulled out in advance and cut to obtain the insulating film belt section, the film moving device moves the insulating film belt section from the film preparation station to the film pasting station, the film preparation and film pasting are carried out simultaneously, the time for waiting for film preparation by the large-surface film pasting device is shortened, and the film pasting efficiency is high. It should be noted that the method is not only applicable to the battery back coating process, but also applicable to the battery U-shaped coating process, increases the application range, and is suitable for wide application in actual industrial production.
Description
Technical Field
The invention belongs to the technical field of battery manufacturing equipment, and particularly relates to a square-shell battery coating method for preparing a film in advance.
Background
Referring to fig. 1, the square-shell battery 10 (hereinafter referred to as battery 10) is divided into six shell surfaces including a top surface 11, a bottom surface (not shown), a left large surface 12, a right large surface (not shown), a front side surface (not shown) and a rear side surface 13 according to the upward posture of the liquid injection port toward the front top surface, and positive electrode posts 14, liquid injection ports 15, explosion-proof windows 16, two-dimensional codes 17 and negative electrode posts 18 are distributed from front to back on the central line of the top surface 11 (top cover exposed surface) of the conventional battery 10. In the process of manufacturing the battery 10, it is necessary to attach insulating films (sheets) to six casing surfaces of the metal casing of the bare cell 10 so that the bare cell 10 becomes the coated battery 10 to perform an electric isolation (insulation) function and also perform an anti-corrosion and decorative function. According to the form of the envelope of the six shell surfaces, which are required to be insulated from each other when the battery module is assembled and the envelope is contacted with the module envelope shell, the battery top surface 11 is distributed with the positive pole column 14, the liquid injection port 15, the explosion-proof window 16, the two-dimensional code 17 and the negative pole column 18, and is a covered bare surface, the left large surface 12, the right large surface (not shown), the front side surface (not shown), the rear side surface 13 and the bottom surface (not shown) of the battery are all covered with insulating films, the whole covered surface is not exposed by the shell surfaces, and if one or some surfaces of the left large surface 12, the right large surface (not shown), the front side surface (not shown), the rear side surface 13 and the bottom surface (not shown) of the battery have no insulating requirement when the battery module is assembled, but only one or some other surfaces have insulating requirements, the other surface or some surfaces have the insulating requirements, and the other surfaces have the whole covered surface, and some surfaces can only cover the edges of the surfaces and the middle of the surfaces can keep the half covered surfaces of the exposed surfaces of the shell surfaces, so as to save insulating film materials.
Typical insulating film materials are made in two forms: the insulating films Zhang Diefang are stacked together and supplied as a double-layered film roll on a roll, and the insulating film roll is supplied as a double-layered film roll. The insulating film sheet can be used after being torn off before the film is coated, the insulating film belt is required to be peeled off before the film is coated, and is cut into insulating film belt sections in the film coating process, the tail of the insulating film belt is one end of the insulating film belt section, which is connected with the insulating film belt roll on the external film-supporting mechanism, and the head of the insulating film belt is the other end of the insulating film belt section. The insulating film is combined at the position where the insulating film sheet and the insulating film belt section are not needed to be distinguished, the insulating film (sheet) is made of polyethylene terephthalate (PET), the insulating film is generally 0.08-0.15 mm thick, the insulating sheet is generally 0.15-0.5 mm thick, and the insulating film has excellent insulativity, high temperature resistance, flame retardance, heat dissipation and stretching rigidity; the adhesive is a polymer adhesive (one or more of polyvinylidene fluoride-hexafluoropropylene copolymer, polyvinylidene fluoride, polymethyl methacrylate, polyethylene oxide, polyacrylonitrile, polystyrene, polyvinyl acetate and polyvinylpyrrolidone) with thickness of 0.01-0.05 mm, can be solidified quickly when being irradiated by Ultraviolet (UV), and has excellent insulativity, high temperature resistance, flame retardance, heat dissipation and adhesiveness; the release film is made of polyethylene (also called PE) and is generally 0.05-0.1 mm thick.
Battery film sticking requirements:
1. the six shell surfaces of the battery 10 are pasted according to the requirement, the top surface of the battery is generally a naked surface, the left large surface, the right large surface, the front side surface, the rear side surface and the bottom surface of the battery are all fully covered surfaces, and the left large surface, the right large surface, the front side surface, the rear side surface and the bottom surface of the battery can be partially covered surfaces, and the rest is half covered surfaces;
2. film tension 1.5+ -0.5 kgf, film sticking pressure 15+ -5 kgf;
3. the coating insulation is required to be a creepage distance of +.4mm from any point on the coating surface (except the top surface) of the battery after coating to the housing surface of the battery 10 itself, and 4mm is called a minimum safe creepage distance. Therefore, the shortcut (sum of a straight line distance or shortest multiple straight line distances) of the film to be penetrated at any part of the full-wrapping surface, which is overlapped with the film, at the edge of the exposed edge (including the original edge, the tape cutting edge, the notch edge and the notch edge) of the insulating film on the full-wrapping surface is called the creepage distance from the film edge to the shell surface, which is not less than 4mm, and the shortcut (sum of a straight line distance or shortest multiple straight line distances) of the film to be penetrated from the full-wrapping surface, which is not less than 4mm, to the paving region of the full-wrapping surface, which is not less than the naked surface, or the semi-wrapping surface, which is not less than 4mm;
4. the film pasting precision comprises trimming precision plus or minus 1mm;
5. the length and width dimensions are not increased significantly so as not to affect future battery modules;
6. no exposure (except intentional exposure), glue spreading, air bubbles, wrinkles, corners, cockling, scratches, and dirt.
The six casing faces of the battery 10 are covered with the insulating film tape in such a manner that some of the faces are covered with the insulating film tape to become covered faces, and the remaining other faces are covered with the insulating film tape extending from the covered faces to become covered faces.
The envelope is divided into a U-shaped envelope and a loop-shaped envelope according to the form of the film and the sequence of the film coating on the six housing faces of the battery 10 to meet the needs of various types of the battery 10 and to meet the needs of matching the film bandwidth with the size of the battery 10.
A full-automatic battery film pasting method capable of realizing unreeling, film preparation and film coating of an insulating film is needed.
Disclosure of Invention
The invention aims to provide a square-shell battery coating method for preparing a film in advance, which is used for realizing automatic release of an insulating film, cutting out, tensioning and sending out an insulating film belt section with a specified length so as to synchronously match with automatic battery coating and improve the efficiency of battery coating.
The invention discloses a method for coating a square shell battery with a film prepared in advance, which comprises the following steps:
preparing a film, wherein the film preparing device pulls out an insulating film strip released by the film releasing device by a preset length, sends out and adheres the insulating film strip to a film preparing area of the film moving device, then cuts the pulled insulating film strip by the film preparing device to obtain an insulating film strip section with the preset length, and cuts two small sections at the left side and the right side of the preset height of the insulating film strip section by a trimming device arranged in the film preparing area of the film moving device to form four trimming openings for folding and pasting the insulating film;
transferring the insulating film belt section from the film preparation area to the film pasting area of the film transferring device by the film transferring device, and enabling the insulating film belt section to be positioned in front of an inlet of a battery paving channel of the large-surface film pasting device;
feeding, namely pushing the battery to the battery laying channel, wherein the battery is in a lying posture with the side face facing forward to place a return-type film, or in a lying posture with the bottom face facing forward to place a U-type film;
the large-surface film pasting device is used for pasting films on the batteries pushed into the inlet of the battery pasting channel, so that the insulating film belt sections are paved on the front side surface, the left large surface and the right large surface of the batteries to carry out film pasting in a back mode, and a first back-shaped film-coated battery is obtained; or, using the large-surface film pasting device to paste the battery film pushed into the inlet of the battery paving channel, so that the insulating film belt section is paved on the bottom surface, the left large surface and the right large surface of the battery to carry out U-shaped film pasting, and a first U-shaped coated battery is obtained;
rolling the rear side surface of the first back type coated battery by using the large-surface film pasting device to fold and paste the insulating films extending out of the rear side surface of the battery on the left large surface and the right large surface of the battery to the rear side surface of the battery to obtain a second back type coated battery; or, a folding side short mechanism of the side folding and pasting device is used for receiving the first U-shaped coated battery sent by the large-surface film pasting device, insulating films extending out of the front side surface and the rear side surface of the battery on the bottom surface are folded and pasted to the front side surface and the rear side surface of the battery, a folding side long mechanism of the side folding and pasting device is used for receiving the battery sent by the folding side short mechanism, and insulating films extending out of the front side surface and the rear side surface of the battery on the left large surface and the right large surface of the battery are folded and pasted to the front side surface and the rear side surface of the battery, so that a second U-shaped coated battery is obtained;
a folding and pasting bottom surface, wherein the folding side short mechanism is used for receiving a second back type coated battery sent by the large-surface film pasting device, insulating films extending out of the battery bottom surface on the front side surface and the rear side surface of the battery are folded and pasted to the battery bottom surface, and the folding side long mechanism is used for receiving the battery sent by the folding side short mechanism, and insulating films extending out of the battery bottom surface on the left large surface and the right large surface are folded and pasted to the battery bottom surface to obtain a third back type coated battery;
the top surface is folded and pasted, the third back type coated battery or the second U type coated battery is pushed to the top surface folding and pasting device in a normal standing state that the top surface faces upwards and the side surface faces forwards, an insulation film extending out of the top surface of the battery on the front side surface and the rear side surface is folded and pasted to the top surface of the battery by using a folding and jacking short mechanism of the top surface folding and pasting device, and an insulation film extending out of the top surface of the battery on the left large surface and the right large surface is folded and pasted to the top surface of the battery by using a folding and jacking long mechanism of the top surface folding and pasting device;
and discharging, wherein the battery discharging device sends out the battery passing through the folding top length mechanism.
Further, the method for coating the square-shell battery with the film prepared in advance further comprises film release, wherein the film release comprises the following steps:
unreeling, wherein the film unreeling mechanism releases a double-layer film tape from the film tape roll;
the film stripping roll of the film stripping and supporting mechanism frames the double-layer film belt, the release film recovery mechanism winds and recovers the release film in the double-layer film belt, the film pulling mechanism of the film preparation device pulls the insulating film belt in the double-layer film belt, and the insulating film belt is stripped from the release film.
Further, the film preparation includes:
and (3) film drawing: the film pulling-up mechanism of the film preparation device clamps the insulating film belt released by the film releasing device, pulls down the insulating film belt to the film pulling-down mechanism of the film preparation device, and then enables the film pulling-down mechanism to clamp the belt head of the insulating film belt; the upper film pulling mechanism is shifted upwards to an initial position after loosening the insulating film belt, and simultaneously, the lower film pulling mechanism is used for pulling down the insulating film belt head until the insulating film belt section between the upper film pulling mechanism and the lower film pulling mechanism reaches a preset length, and then the upper film pulling mechanism clamps the insulating film belt at the initial position; the upper film pulling mechanism and the lower film pulling mechanism respectively send the insulating film strips clamped by the upper film pulling mechanism and the lower film pulling mechanism to the upper part and the lower part of the film preparation area of the film moving device correspondingly;
cutting a film: and cutting off the insulating film belt by using a film cutting mechanism below the film lifting mechanism, so that the upper and lower film moving units of the film moving device are respectively adhered with the tail of the insulating film belt section and the head of the insulating film belt section with preset lengths.
Further, the transfer film includes:
and (3) film connection: the film moving unit above the film preparation area is adhered and connected with the adhering surface of the tape tail of the insulating film tape section fed by the upper film pulling mechanism, and the film moving unit below the film preparation area is adhered and connected with the adhering surface of the tape head of the insulating film tape section fed by the lower film pulling mechanism;
film feeding: synchronously moving the two film moving units to the film pasting area along with the insulating film belt section;
and (3) membrane tensioning: two film stretching units of the film stretching mechanism on the film moving device are used for respectively pasting the pasting surfaces of the insulating film belt sections from the upper end and the lower end of the battery paving channel so as to push out and stretch the insulating film belt sections, wherein the distances of the insulating film belt sections pushed out by the two film stretching units are different, so that the insulating film belt sections are inclined to the battery paving channel.
Further, the feed comprises:
the feeding posture is changed, and the battery with the top surface facing upwards and the side surface facing forwards in an upright posture is pushed to the turnover device to turn over the battery, so that the battery with the large surface facing upwards and the side surface facing forwards in a lying posture is obtained; or firstly pushing the battery with the top surface facing upwards and the side surface facing forwards to the turnover device to turn over the battery, so as to obtain the battery with the large surface facing upwards and the side surface facing forwards to be in a lying posture, and then pushing the battery to the feeding rotation device to rotate into the battery with the large surface facing upwards and the bottom surface facing forwards to be in the lying posture;
pushing the battery which faces upwards and faces forwards in a lying posture to the battery laying channel for returning the film; or pushing the battery with the large surface facing upwards and the bottom surface facing forwards in a lying posture to the battery laying channel for U-shaped film pasting.
Further, the method further comprises a material transferring posture transformation, wherein the material transferring posture transformation is positioned before the folding top surface, and comprises the following steps:
and turning the material, and pushing the second-type coated battery to a material turning device to obtain the second-type coated battery with the top surface facing upwards and the side surface facing forwards in an upright posture, so that the folded top surface is pasted.
Further, the method further comprises a material transferring posture transformation, wherein the material transferring posture transformation is positioned before the folding top surface, and comprises the following steps:
the material turning is carried out, and the second U-shaped coated battery sent out by the folding side length mechanism is pushed to a material turning rotating device, so that the second U-shaped coated battery which faces upwards and the bottom surface of the second U-shaped coated battery is in a flat lying posture forward is rotated to be a second U-shaped coated battery which faces upwards and the side surface of the second U-shaped coated battery is in a flat lying posture forward;
and turning the material, and pushing the second U-shaped coated battery output by the material turning rotating device to obtain a second U-shaped coated battery with the top surface facing upwards and the side surface facing forward in an upright posture, so that the folded top surface is pasted.
The invention has the beneficial effects that:
according to the square-shell battery film coating method for preparing films in advance, the film preparation process of the insulating film belt is separated from the feeding film coating process of the battery to prepare films in advance, the film preparation-film moving process and the feeding-large-surface film pasting process can be simultaneously carried out, the insulating film belt is pulled out in advance and cut to obtain the insulating film belt section, the film moving device moves the insulating film belt section from the film preparation station to the film pasting station, the film preparation and film pasting are carried out simultaneously, the time for waiting for film preparation by the large-surface film pasting device is shortened, and the film pasting efficiency is high. It should be noted that the method is not only applicable to the battery back coating process, but also applicable to the battery U-shaped coating process, increases the application range, and is suitable for wide application in actual industrial production.
Drawings
Fig. 1 is a schematic structural view of a square battery;
FIG. 2 is a schematic flow chart of a method for coating a square battery with a film prepared in advance for a film coated battery;
fig. 3 is a schematic flow chart of a method for coating a square battery with a film prepared in advance for a U-shaped coated battery;
FIG. 4 is a schematic diagram of the combined structure of the film releasing device, the film preparing device, the film moving device and the edge shearing device;
FIG. 5 is a schematic diagram of a membrane preparation device;
fig. 6 is a schematic structural view of a film transfer device.
Reference numerals illustrate:
10. a battery; 11. a top surface; 12. left large face; 13. a rear side; 14. a positive electrode post; 15. a liquid injection port; 16. an explosion-proof window; 17. a two-dimensional code; 18. a negative electrode column; 20. an insulating film tape section;
200. a film releasing device;
300. a film preparation device; 310. preparing a film support; 320. a film pulling mechanism; 321. a pull-up film lifting assembly; 322. an upper membrane clamping assembly; 330. a film cutting mechanism; 340. a film pulling-down mechanism; 341. a pull-down film lifting assembly; 342. a lower membrane clamping assembly;
400. a film transferring device; 410. a film transferring bracket; 411. a film preparation area; 412. a film pasting area; 420. a film moving mechanism; 4200. a film transferring unit; 430. a film stretching mechanism;
600. and the edge shearing device.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two parts. The specific meaning of the terms in the present invention will be understood by those of ordinary skill in the art in specific detail.
Referring to fig. 1-3, the invention discloses a square-shell battery coating method for preparing a film in advance, which comprises the following steps:
s100, film placing, wherein the film placing device 200 releases the insulating film belt;
specifically, the film release includes:
s110, unreeling, wherein a film unreeling mechanism (not labeled in the figure) releases a double-layer film tape from the film tape roll;
s120, stripping, wherein a stripping roller of a film-stripping and film-supporting mechanism (not labeled in the drawing) supports a double-layer film belt, a release film recovery mechanism (not labeled in the drawing) winds and recovers release films in the double-layer film belt, and an upper film-pulling mechanism 320 of the film preparation device 300 pulls an insulating film belt in the double-layer film belt, and the insulating film belt is stripped from the release film.
It can be appreciated that the film releasing device 200 includes a film releasing mechanism, a film releasing and supporting mechanism, and a release film recycling mechanism, where the film releasing mechanism releases a double-layer film strip, the film releasing and supporting mechanism erects the double-layer film strip and strips the double-layer film strip from the release film to obtain an insulating film strip, the insulating film strip is output to the film preparing device 300, and the release film is recycled to the release film recycling mechanism. The application of the film releasing device in the prior art is very common, so the detailed description of the structure of the film releasing device is omitted here.
S200, preparing a film, wherein the film preparing device 300 pulls out the insulating film strip released by the film placing device 200 by a preset length, sends out and adheres the insulating film strip to the film preparing area 411 of the film moving device 400, then cuts the pulled insulating film strip by the film preparing device 300 to obtain an insulating film strip section 20 with the preset length, and then cuts two small sections at the left side and the right side of the preset height of the insulating film strip section 20 by a trimming device arranged in the film preparing area 411 of the film moving device 400 to form four trimming openings for folding and pasting the insulating film.
Specifically, the preparation film comprises:
s210, film drawing: the film-pulling-up mechanism 320 of the film-preparing device 300 clamps the insulating film tape released by the film-releasing device 200 and pulls down the insulating film tape to the film-pulling-down mechanism 340 of the film-preparing device 300, and then the film-pulling-down mechanism 340 clamps the tape head of the insulating film tape; the upper film pulling mechanism 320 moves up to the initial position after loosening the insulating film tape, and simultaneously, the lower film pulling mechanism 340 pulls down the insulating film tape head until the insulating film tape section 20 between the upper film pulling mechanism 320 and the lower film pulling mechanism 340 reaches the preset length, and then the upper film pulling mechanism 320 clamps the insulating film tape at the initial position; the upper film pulling mechanism 320 and the lower film pulling mechanism 340 respectively send the insulating film strips clamped by the upper film pulling mechanism 320 and the lower film pulling mechanism to the upper part and the lower part of the film preparation area 411 of the film moving device 400;
s220, cutting a film: the insulating film tape is cut off using the film cutting mechanism 330 under the pull-up film mechanism 320 so that the upper and lower two film moving units 4200 of the film moving device 400 adhere the tape tail of the insulating film tape section 20 and the tape head of the insulating film tape section 20, respectively, of a preset length.
S300, transferring the insulating film strip section 20 from the film preparation area 411 to a film pasting area 412 of the film transferring device 400 by the film transferring device 400, and enabling the insulating film strip section 20 to be positioned in front of an inlet of a battery paving channel of a large-surface film pasting device (not shown in the figure);
specifically, the transfer film includes:
s310, film connection: the film moving unit 4200 located above the film preparation area 411 is adhered to the adhering surface of the tape tail of the insulating film tape section 20 fed by the upper film pulling mechanism 320, and the film moving unit 4200 located below the film preparation area 411 is adhered to the adhering surface of the tape head of the insulating film tape section 20 fed by the lower film pulling mechanism 340;
s320, film feeding: the two film transfer units 4200 are moved synchronously with the insulating film tape section 20 to the film laminating area 412;
s330, stretching: two film stretching units (not labeled in the figure) of the film stretching mechanism 430 on the film shifting device 400 are used for respectively pasting the pasting surfaces of the insulating film belt sections 20 from the upper end and the lower end of the battery pasting channel so as to push out and stretch the insulating film belt sections 20, wherein the distances of the insulating film belt sections 20 pushed out by the two film stretching units are different, so that the insulating film belt sections 20 incline to the battery pasting channel.
Referring further to fig. 4-5, a film preparation device 300 used in the film coating method of the present invention includes a film preparation support 310, a film lifting mechanism 320, a film cutting mechanism 330, and a film dropping mechanism 340; the film preparation bracket 310 is arranged at the film outlet end of the film placing device 200, the film lifting mechanism 320 and the film dropping mechanism 340 are respectively fixed on the upper half part and the lower half part of the film preparation bracket 310, the film lifting mechanism 320 comprises a film lifting component 321 and a film clamping component 322, the film lifting component 321 is fixed on the upper part of the film preparation bracket 310, and the film clamping component 322 is fixed on the output end of the film lifting component 321; the lower film pulling mechanism 340 includes a lower film pulling lifting assembly 341 and a lower film clamping assembly 342, the lower film pulling lifting assembly 341 is fixed at the lower part of the film preparation support 310, the lower film clamping assembly 342 is fixed at the output end of the lower film pulling lifting assembly 341, the film cutting mechanism 330 is fixed at the lower part of the upper film clamping assembly 322 of the upper film pulling mechanism 320 (i.e. below the upper film clamping opening of the upper film clamping assembly 322) for cutting off the tail of the insulating film belt, the upper film pulling mechanism 320 is matched with the lower film pulling mechanism 340 for tensioning the insulating film belt, wherein the lower film clamping assembly 342 of the lower film pulling mechanism 340 is used for clamping and delivering the head of the insulating film belt, and the upper film clamping assembly 322 of the upper film pulling mechanism 320 is used for clamping and delivering the tail of the insulating film belt.
In the film preparation device 300 of this embodiment, the upper and lower film pulling mechanisms 320 and 340 are respectively disposed at the upper and lower halves of the film preparation rack 310, the upper and lower parts of the insulating film tape are respectively adsorbed by the upper and lower film pulling mechanisms 320 and 340 to tension the insulating film tape section 20 of a specified length, and after the insulating film tape is sent out by the upper and lower film pulling mechanisms 320 and 340, the tape tail of the insulating film tape is cut off by the film cutting mechanism 330 to form the insulating film tape section 20 of the specified length, so that the film is pasted on the battery 10. The film cutting mechanism 330 of the scheme is arranged on the film lifting mechanism 320, the film lifting mechanism 340 pulls out the insulating film belt with the specified length, and then the insulating film belt is cut after the film lifting mechanism 320 clamps the insulating film belt, so that the operation is convenient, and the film lifting mechanism 320 and the film lifting mechanism 340 are mutually matched to clamp and send out the insulating film belt section 20 with the specified length.
With further reference to fig. 6, a film moving device 400 used in the film coating method of the present invention includes a film moving bracket 410, a film moving mechanism 420, and a film tensioning mechanism 430; the film transferring bracket 410 is provided with film preparing areas 411 and film pasting areas 412 which are arranged side by side; the film transferring mechanism 420 includes two film transferring units 4200, where the two film transferring units 4200 are respectively fixed at the upper and lower ends of the film transferring frame 410, and the two film transferring units 4200 can be respectively stuck to the tail of the insulating film tape section 20 and the head of the insulating film tape section 20, so as to move the insulating film tape section 20 from the film preparing area 411 to the film sticking area 412; the film stretching mechanism 430 is disposed in the film pasting region 412, and is used for stretching the insulating film band section 20 and tilting the insulating film band section to the battery paving channel of the large-surface film pasting device for pasting the battery 10.
According to the square-shell battery film coating method for preparing films in advance, the film preparation process of the insulating film belt is separated from the feeding film coating process of the battery 10 to prepare films in advance, the film preparation-film moving process and the feeding-large-surface film pasting process can be simultaneously carried out, the insulating film belt is pulled out in advance, the insulating film belt is cut to obtain the insulating film belt section 20, the film moving device 400 moves the insulating film belt section 20 from the film preparation work position to the film pasting work position, the film preparation and the film pasting are carried out simultaneously, the time for waiting for film preparation of the large-surface film pasting device is shortened, and the film pasting efficiency is high. It should be noted that the method is not only applicable to the battery back coating process, but also applicable to the battery U-shaped coating process, increases the application range, and is suitable for wide application in actual industrial production.
S400, feeding, namely pushing the battery 10 to a battery paving channel, wherein the battery 10 is placed in a lying posture with the side face facing forward for a return type film, or the battery 10 is placed in a lying posture with the bottom face facing forward for a U-shaped film;
when the battery 10 is subjected to the film laminating in a shape of a loop, the battery 10 specifically comprises from feeding to discharging:
s411, feeding and overturning, namely pushing the battery 10 with the top surface 11 facing upwards and the side surface facing forwards in a vertical posture to an overturning device (not shown in the figure) to overturn the battery 10, so as to obtain the battery 10 with the large surface facing upwards and the side surface facing forwards in a horizontal posture;
and S412, pushing, namely pushing the battery 10 which faces upwards and faces forwards on the side surface to be in a lying posture to a battery laying channel for back type film pasting.
S510, pasting films on the large surface by using a large surface pasting device to paste films on the battery 10 pushed into the inlet of the battery pasting channel, so that the insulating film belt section 20 is paved on the front side surface, the left large surface and the right large surface of the battery to carry out film pasting in a back shape, and the first back shape coated battery 10 is obtained.
And S610, folding and pasting the side surfaces, and rolling the rear side surfaces of the first back-shaped coated battery 10 by using a large-surface film pasting device so as to fold and paste the insulating films extending out of the rear side surfaces of the battery on the left large surface and the right large surface of the battery to the rear side surfaces of the battery, thereby obtaining the second back-shaped coated battery 10.
And S710, folding and pasting the bottom surface, using a folding side short mechanism (not shown) to receive the second coated battery 10 sent out by the large-surface film pasting device, folding and pasting the insulating films extending out of the battery bottom surface on the front side surface and the rear side surface of the battery to the battery bottom surface, using a folding side long mechanism (not shown) to receive the battery 10 sent out by the folding side short mechanism, folding and pasting the insulating films extending out of the battery bottom surface on the left large surface and the right large surface to the battery bottom surface, and obtaining the third coated battery 10.
And S810, turning the materials, and pushing the third-loop-type coated battery 10 to a turning device (not shown in the figure) to obtain the third-loop-type coated battery 10 with the top surface 11 facing upwards and the side surface facing forwards in an upright posture for folding and pasting the top surface.
S910, folding and pasting the top surface, pushing the third back-type coated battery 10 to a top surface folding and pasting device (not shown) in a normal standing state that the top surface 11 faces forward, folding and pasting insulating films extending out of the top surface 11 of the battery on the front side surface and the rear side surface by using a folding and jacking short mechanism (not shown) of the top surface folding and pasting device, folding and pasting the insulating films extending out of the top surface 11 of the battery on the left large surface and the right large surface to the top surface 11 of the battery by using a folding and jacking long mechanism (not shown) of the top surface folding and pasting device.
S1000, discharging, and delivering the battery 10 which is folded and stuck to the top surface by a battery discharging device (not shown in the figure).
It should be noted that, the large-area film pasting device, the folding side short mechanism and the folding side long mechanism of the side folding and pasting device, and the top folding and pasting device can be realized by using the conventional film pasting device, so that the structural principle is not repeated here.
When the battery 10 is subjected to U-shaped film pasting, the battery 10 specifically comprises from feeding to discharging:
s421, feeding and overturning, namely pushing the battery with the top surface 11 facing upwards and the side surface facing forwards in an upright posture to an overturning device to overturn the battery, so as to obtain the battery with the large surface facing upwards and the side surface facing forwards in a flat lying posture;
s422, feeding and rotating, wherein the battery turned by the turning device is pushed into a feeding and rotating device (not shown) to be rotated into a battery with a large surface facing upwards and a bottom surface facing forwards in a lying posture;
s423, pushing the battery with the large surface facing upwards and the bottom surface facing forwards in a lying posture to a battery laying channel for U-shaped film pasting.
S520, large-surface film pasting, namely using a large-surface film pasting device to paste the battery film pushed into the inlet of the battery film pasting channel, so that the insulating film belt section 20 is paved on the bottom surface, the left large surface and the right large surface of the battery, and performing U-shaped film pasting to obtain a first U-shaped coated battery;
s620, folding and pasting the side surfaces, namely folding and pasting the first U-shaped coated battery sent out by the large-surface film pasting device by using a folding and pasting side surface short mechanism of the side surface folding and pasting device, folding and pasting the insulating films extending out of the front side surface and the rear side surface of the battery on the bottom surface to the front side surface and the rear side surface of the battery, folding and pasting the insulating films extending out of the front side surface and the rear side surface of the battery on the left large surface and the right large surface of the battery to the front side surface and the rear side surface of the battery by using a folding and pasting side surface long mechanism of the side surface folding and pasting device, and obtaining a second U-shaped coated battery;
s721, material rotating, namely pushing the second U-shaped coated battery sent out by the folded side long mechanism to a material rotating device (not shown in the figure) so as to rotate the second U-shaped coated battery which faces upwards and the bottom surface of which faces forwards and takes a lying posture into the second U-shaped coated battery which faces upwards and the side surface of which faces forwards and takes a lying posture;
s722, turning the material, and pushing the second U-shaped coated battery output by the material turning rotating device to obtain a second U-shaped coated battery with the top surface 11 facing upwards and the side surface facing forward in an upright posture for folding and pasting the top surface.
S820, folding and pasting the top surface, pushing the second U-shaped coated battery to a top surface folding and pasting device in a positive standing state that the top surface 11 faces forward, folding and pasting the insulating films extending out of the battery top surface 11 on the front side surface and the rear side surface to the battery top surface 11 by using a folding and jacking short mechanism of the top surface folding and pasting device, and folding and pasting the insulating films extending out of the battery top surface 11 on the left large surface and the right large surface to the battery top surface 11 by using a folding and jacking long mechanism of the top surface folding and pasting device;
s920, discharging, and sending out the battery with the folded top surface by the battery discharging device.
In the present invention, both the feed roll-over S411 and the feed roll-over S421 include:
the battery with the top surface 11 facing upwards and the front side surface or the rear side surface facing forwards in an upright posture is input into the overturning feeding mechanism;
pushing the battery into a turnover carrier (not shown) of a turnover mechanism (not shown) by a turnover feeding pushing mechanism (not shown) in cooperation with the turnover feeding mechanism; the turnover device and the material turning device comprise a turnover feeding pushing mechanism, a turnover mechanism and a turnover discharging pushing mechanism, the turnover mechanism comprises a turnover driving assembly (not shown in the figure) and four turnover carriers, the four turnover carriers are uniformly distributed at the output end of the turnover driving assembly around the turnover direction of the turnover driving assembly, and the turnover driving assembly is used for driving the four turnover carriers to synchronously turn;
the turning driving assembly is started to drive the four turning carriers to turn 90 degrees, so that the top surface 11 of the battery faces upwards and the front side surface or the rear side surface of the battery faces forwards in a right standing state and turns to the left large surface or the right large surface of the battery faces upwards and the front side surface or the rear side surface of the battery faces forwards in a lying state, and the battery is pushed out by the turning discharging pushing mechanism matched with the turning carriers.
The process of turning S810 and turning S722 is similar to the process of turning S411 and S421, and will not be described here.
The battery can be turned over by using the turning-over mode, so that the battery is not required to be carried or grabbed to turn over, and damage or loss to the battery can be reduced as much as possible. On the other hand, because the four overturning carriers synchronously operate, the discharging stations can discharge simultaneously when the feeding stations feed, continuous battery overturning operation is realized, and the battery overturning working efficiency is improved.
In the present invention, the feeding rotation S422 and the turning rotation S721 each include:
a carrying platform (not shown) receives the battery with a large surface facing upwards and a side surface facing forwards in a lying posture, and the overturning discharging pushing mechanism is further matched with the carrying platform to push the battery to move above a rotating mechanism (not shown);
a carrier lifting mechanism (not shown in the figure) drives the carrier to descend so that the rotating mechanism carries the battery to extend out of the carrier;
starting a rotating mechanism to rotate 90 degrees or 270 degrees to obtain a battery with a left large surface or a right large surface facing upwards and a bottom surface facing forwards in a lying posture;
the carrier lifting mechanism drives the carrier to lift again, so that the rotating mechanism moves back under the carrier, and the battery is loaded on the carrier;
the battery is output after the battery direction and position are adjusted in the front and rear side directions of the battery by a guide roller assembly (not shown).
It should be noted that, the battery is rotated by the above method, and the angle rotation of the battery can be realized without carrying the battery, so that the rotation working efficiency can be improved, and meanwhile, the damage of the battery caused in the rotation process can be reduced. Wherein, feeding rotary device and commentaries on classics material rotary device all include carrier, carrier elevating system, rotary mechanism and guide roller assembly.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The method for coating the square shell battery with the film prepared in advance is characterized by comprising the following steps of:
preparing a film, wherein the film preparing device pulls out an insulating film strip released by the film releasing device by a preset length, sends out and adheres the insulating film strip to a film preparing area of the film moving device, then cuts the pulled insulating film strip by the film preparing device to obtain an insulating film strip section with the preset length, and cuts two small sections at the left side and the right side of the preset height of the insulating film strip section by a trimming device arranged in the film preparing area of the film moving device to form four trimming openings for folding and pasting the insulating film;
transferring the insulating film belt section from the film preparation area to the film pasting area of the film transferring device by the film transferring device, and enabling the insulating film belt section to be positioned in front of an inlet of a battery paving channel of the large-surface film pasting device;
feeding, namely pushing the battery to the battery laying channel, wherein the battery is in a lying posture with the side face facing forward to place a return-type film, or in a lying posture with the bottom face facing forward to place a U-type film;
the large-surface film pasting device is used for pasting films on the batteries pushed into the inlet of the battery pasting channel, so that the insulating film belt sections are paved on the front side surface, the left large surface and the right large surface of the batteries to carry out film pasting in a back mode, and a first back-shaped film-coated battery is obtained; or, using the large-surface film pasting device to paste the battery film pushed into the inlet of the battery paving channel, so that the insulating film belt section is paved on the bottom surface, the left large surface and the right large surface of the battery to carry out U-shaped film pasting, and a first U-shaped coated battery is obtained;
rolling the rear side surface of the first back type coated battery by using the large-surface film pasting device to fold and paste the insulating films extending out of the rear side surface of the battery on the left large surface and the right large surface of the battery to the rear side surface of the battery to obtain a second back type coated battery; or, a folding side short mechanism of the side folding and pasting device is used for receiving the first U-shaped coated battery sent by the large-surface film pasting device, insulating films extending out of the front side surface and the rear side surface of the battery on the bottom surface are folded and pasted to the front side surface and the rear side surface of the battery, a folding side long mechanism of the side folding and pasting device is used for receiving the battery sent by the folding side short mechanism, and insulating films extending out of the front side surface and the rear side surface of the battery on the left large surface and the right large surface of the battery are folded and pasted to the front side surface and the rear side surface of the battery, so that a second U-shaped coated battery is obtained;
a folding and pasting bottom surface, wherein the folding side short mechanism is used for receiving a second back type coated battery sent by the large-surface film pasting device, insulating films extending out of the battery bottom surface on the front side surface and the rear side surface of the battery are folded and pasted to the battery bottom surface, and the folding side long mechanism is used for receiving the battery sent by the folding side short mechanism, and insulating films extending out of the battery bottom surface on the left large surface and the right large surface are folded and pasted to the battery bottom surface to obtain a third back type coated battery;
the top surface is folded and pasted, the third back type coated battery or the second U type coated battery is pushed to the top surface folding and pasting device in a normal standing state that the top surface faces upwards and the side surface faces forwards, an insulation film extending out of the top surface of the battery on the front side surface and the rear side surface is folded and pasted to the top surface of the battery by using a folding and jacking short mechanism of the top surface folding and pasting device, and an insulation film extending out of the top surface of the battery on the left large surface and the right large surface is folded and pasted to the top surface of the battery by using a folding and jacking long mechanism of the top surface folding and pasting device;
and discharging, wherein the battery discharging device sends out the battery passing through the folding top length mechanism.
2. The method for coating a square battery with an advanced film according to claim 1, further comprising film releasing, wherein the film releasing comprises:
unreeling, wherein the film unreeling mechanism releases a double-layer film tape from the film tape roll;
the film stripping roll of the film stripping and supporting mechanism frames the double-layer film belt, the release film recovery mechanism winds and recovers the release film in the double-layer film belt, the film pulling mechanism of the film preparation device pulls the insulating film belt in the double-layer film belt, and the insulating film belt is stripped from the release film.
3. The method for coating a square battery with a film prepared in advance according to claim 1, wherein the film preparation comprises:
and (3) film drawing: the film pulling-up mechanism of the film preparation device clamps the insulating film belt released by the film releasing device, pulls down the insulating film belt to the film pulling-down mechanism of the film preparation device, and then enables the film pulling-down mechanism to clamp the belt head of the insulating film belt; the upper film pulling mechanism is shifted upwards to an initial position after loosening the insulating film belt, and simultaneously, the lower film pulling mechanism is used for pulling down the insulating film belt head until the insulating film belt section between the upper film pulling mechanism and the lower film pulling mechanism reaches a preset length, and then the upper film pulling mechanism clamps the insulating film belt at the initial position; the upper film pulling mechanism and the lower film pulling mechanism respectively send the insulating film strips clamped by the upper film pulling mechanism and the lower film pulling mechanism to the upper part and the lower part of the film preparation area of the film moving device correspondingly;
cutting a film: and cutting off the insulating film belt by using a film cutting mechanism below the film lifting mechanism, so that the upper and lower film moving units of the film moving device are respectively adhered with the tail of the insulating film belt section and the head of the insulating film belt section with preset lengths.
4. The method for coating a square battery with a film prepared in advance according to claim 3, wherein the film moving comprises:
and (3) film connection: the film moving unit above the film preparation area is adhered and connected with the adhering surface of the tape tail of the insulating film tape section fed by the upper film pulling mechanism, and the film moving unit below the film preparation area is adhered and connected with the adhering surface of the tape head of the insulating film tape section fed by the lower film pulling mechanism;
film feeding: synchronously moving the two film moving units to the film pasting area along with the insulating film belt section;
and (3) membrane tensioning: two film stretching units of the film stretching mechanism on the film moving device are used for respectively pasting the pasting surfaces of the insulating film belt sections from the upper end and the lower end of the battery paving channel so as to push out and stretch the insulating film belt sections, wherein the distances of the insulating film belt sections pushed out by the two film stretching units are different, so that the insulating film belt sections are inclined to the battery paving channel.
5. The method for coating a square battery with a film prepared in advance according to claim 1, wherein the feeding comprises:
the feeding posture is changed, and the battery with the top surface facing upwards and the side surface facing forwards in an upright posture is pushed to the turnover device to turn over the battery, so that the battery with the large surface facing upwards and the side surface facing forwards in a lying posture is obtained; or firstly pushing the battery with the top surface facing upwards and the side surface facing forwards to the turnover device to turn over the battery, so as to obtain the battery with the large surface facing upwards and the side surface facing forwards to be in a lying posture, and then pushing the battery to the feeding rotation device to rotate into the battery with the large surface facing upwards and the bottom surface facing forwards to be in the lying posture;
pushing the battery which faces upwards and faces forwards in a lying posture to the battery laying channel for returning the film; or pushing the battery with the large surface facing upwards and the bottom surface facing forwards in a lying posture to the battery laying channel for U-shaped film pasting.
6. The method for coating a square battery with a film prepared in advance according to claim 1, further comprising a material transferring posture changing step, wherein the material transferring posture changing step is positioned before the top surface of the folding and pasting step, and comprises the following steps:
and turning the material, and pushing the third-return-type coated battery to a material turning device to obtain the third-return-type coated battery with the top surface facing upwards and the side surface facing forwards in an upright posture, so that the top surface of the folded patch is provided.
7. The method for coating a square battery with a film prepared in advance according to claim 1, further comprising a material transferring posture changing step, wherein the material transferring posture changing step is positioned before the top surface of the folding and pasting step, and comprises the following steps:
the material turning is carried out, and the second U-shaped coated battery sent out by the folding side length mechanism is pushed to a material turning rotating device, so that the second U-shaped coated battery which faces upwards and the bottom surface of the second U-shaped coated battery is in a flat lying posture forward is rotated to be a second U-shaped coated battery which faces upwards and the side surface of the second U-shaped coated battery is in a flat lying posture forward;
and turning the material, and pushing the second U-shaped coated battery output by the material turning rotating device to obtain a second U-shaped coated battery with the top surface facing upwards and the side surface facing forward in an upright posture, so that the folded top surface is pasted.
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Cited By (1)
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| CN117601414A (en) * | 2024-01-23 | 2024-02-27 | 宁德时代新能源科技股份有限公司 | Battery film sticking equipment and film sticking method thereof |
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| CN115986337A (en) * | 2022-11-25 | 2023-04-18 | 湖南领湃达志科技股份有限公司 | Battery insulating film, battery insulating film coating method and power battery |
| CN115832401A (en) * | 2022-12-23 | 2023-03-21 | 深圳市誉辰智能装备股份有限公司 | Square-shell battery coating equipment compatible with various coating methods |
| CN219246750U (en) * | 2022-12-23 | 2023-06-23 | 深圳市誉辰智能装备股份有限公司 | Device for attaching film and folding side surfaces in shape of Chinese character' Hui |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117601414A (en) * | 2024-01-23 | 2024-02-27 | 宁德时代新能源科技股份有限公司 | Battery film sticking equipment and film sticking method thereof |
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