CN111916677A - Method and equipment for processing side wrinkles of pole piece belt - Google Patents
Method and equipment for processing side wrinkles of pole piece belt Download PDFInfo
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- CN111916677A CN111916677A CN202010801875.7A CN202010801875A CN111916677A CN 111916677 A CN111916677 A CN 111916677A CN 202010801875 A CN202010801875 A CN 202010801875A CN 111916677 A CN111916677 A CN 111916677A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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- 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
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Abstract
The application provides a pole piece belt side edge wrinkle processing method and equipment. The pole piece belt side edge fold processing method comprises the steps of winding a pole piece belt on a winding drum; baking the pole piece belt; unreeling the pole piece belt, and cutting off optical foils in optical foil areas positioned on the side edges of the pole piece belt, wherein the pole piece belt comprises a coating area and an optical foil area, and the optical foil areas are positioned outside the coating area; and rolling the pole piece belt. Before the pole piece area is rolled in, earlier convolute the pole piece area, and toast the pole piece area after convoluteing, guarantee the stress release of the both sides in pole piece area, later, take the smooth foil excision of side with the pole piece, make the thickness of the side in pole piece area unanimous, thereby make the ductility of the side in pole piece area unanimous, thereby make when taking the branch strip to the pole piece, the side atress in pole piece area is even, the roughness of the side in pole piece area has been improved, the probability that the fold appears in pole piece area has been reduced.
Description
Technical Field
The invention relates to the technical field of lithium ion pole pieces, in particular to a method and equipment for processing side edge wrinkles of a pole piece belt.
Background
With the development of lithium ion battery technology, the application range of lithium ions is rapidly expanding, and the lithium ion battery has the characteristics of small volume, light weight, long power supply time and the like, and is widely adopted by various portable electronic devices. The output efficiency of the electric energy of the lithium ions is high and low, the quality of the pole piece is an important link, and the pole piece rolling is an indispensable process of the lithium ion battery.
Along with the requirements of people on the electric quantity and the energy density of the battery are higher and higher, the compacted density of the pole piece after rolling is higher and higher, and the edge of the pole piece after rolling is caused to be in transitional extension. Because the aluminum foil is low in strength and good in extensibility, the extension rates of the coating area and the smooth foil area are different when the aluminum foil passes through the roller, and the split pole pieces are not released in time due to stress, the edges of the pole pieces are wrinkled, so that the tension and the tightness of two sides of the pole pieces are different, and the following battery cells are not uniform, dislocated and the like during winding, thereby causing fire, explosion and other hidden dangers.
In the traditional pole piece manufacturing process, the pole piece after being coated is rolled, then the target thickness specification is pressed, and the pole piece is not pretreated before being rolled, so that the flatness of the side edge of the pole piece is sharply reduced when the strip splitting process is carried out, namely, the side edge of the pole piece is seriously wrinkled, and the qualified rate of the pole piece is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a pole piece strip side edge fold processing method and equipment for solving the technical problems.
The purpose of the invention is realized by the following technical scheme:
a pole piece belt side edge corrugation processing method comprises the following steps: winding the pole piece belt on a winding drum; baking the pole piece belt; unreeling the pole piece belt, and cutting off optical foils in optical foil areas positioned on the side edges of the pole piece belt, wherein the pole piece belt comprises a coating area and an optical foil area, and the optical foil areas are positioned outside the coating area; and rolling the pole piece belt.
In one embodiment, the baking process for the pole piece strip includes: and baking the pole piece belt under a preset condition.
In one embodiment, the preset conditions include a preset temperature, a preset time, and a preset pressure.
In one embodiment, the preset temperature is 100-120 ℃.
In one embodiment, the preset time is 2 to 4 hours.
In one embodiment, the predetermined pressure is greater than 0 pa.
In one embodiment, the material of the reel comprises silicone.
In one embodiment, the rolling treatment of the pole piece strip includes: and carrying out cold pressing on the pole piece belt.
In one embodiment, the rolling process is performed on the pole piece strip, and then the method further includes: carrying out slitting treatment and slitting treatment on the pole piece belt, and obtaining a pole piece; winding the pole piece to form a winding core; acquiring the thicknesses of two ends of the roll core; detecting whether the thickness is matched with a preset thickness; and when the thickness is matched with the preset thickness, sending a qualified signal to a monitoring system.
A pole piece strip side edge corrugation processing device comprises: the device comprises a mounting base, a winding drum, a baking box and a roll cutting device; the winding drum is arranged close to the roller cutting device, is rotatably connected with the mounting base and is used for winding and unwinding the pole piece belt; the baking box is connected with the mounting base and is used for baking the pole piece belt; the roll cutting device is connected with the mounting base and used for cutting off the optical foils in the optical foil areas on the side edges of the pole piece strip.
Compared with the prior art, the invention has at least the following advantages:
before the pole piece area is rolled in, earlier convolute the pole piece area, and toast the pole piece area after convoluteing, guarantee the stress release of the both sides in pole piece area, later, take the smooth foil of side with the pole piece and excise, make the thickness of the side in pole piece area unanimous, thereby make the ductility of the side in pole piece area unanimous, the extensibility of the side in pole piece area is the same promptly, thereby make when taking out the branch strip to the pole piece area, the side atress in pole piece area is even, the roughness of the side in pole piece area has been improved, the probability of fold is taken out to the pole piece has been reduced. And only need to carry out coiling toasting and the cutting of smooth foil to the pole piece area for the fold processing degree of difficulty of pole piece area reduces, is convenient for handle the side fold problem of pole piece area.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method for wrinkle-processing a side edge of a pole piece tape according to an embodiment;
FIG. 2 is a schematic view of a roll cutting apparatus in one embodiment;
FIG. 3 is an enlarged schematic view at A1 of the roll cutting apparatus shown in FIG. 2;
FIG. 4 is an enlarged schematic view at A2 of the roll cutting apparatus shown in FIG. 2;
FIG. 5 is an enlarged schematic view at A3 of the roll cutting apparatus shown in FIG. 2;
fig. 6 is an enlarged schematic view of the roll cutting apparatus of fig. 2 at a 4.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention relates to a method for processing side edge wrinkles of a pole piece belt. In one embodiment, the pole piece strip side edge corrugation processing method comprises the steps of winding a pole piece strip on a winding drum; baking the pole piece belt; unreeling the pole piece belt, and cutting off optical foils in optical foil areas positioned on the side edges of the pole piece belt, wherein the pole piece belt comprises a coating area and an optical foil area, and the optical foil areas are positioned outside the coating area; and rolling the pole piece belt. Before the pole piece area is rolled in, earlier convolute the pole piece area, and toast the pole piece area after convoluteing, guarantee the stress release of the both sides in pole piece area, later, take the smooth foil of side with the pole piece and excise, make the thickness of the side in pole piece area unanimous, thereby make the ductility of the side in pole piece area unanimous, the extensibility of the side in pole piece area is the same promptly, thereby make when taking out the branch strip to the pole piece area, the side atress in pole piece area is even, the roughness of the side in pole piece area has been improved, the probability of fold is taken out to the pole piece has been reduced. And only need to carry out coiling toasting and the cutting of smooth foil to the pole piece area for the fold processing degree of difficulty of pole piece area reduces, is convenient for handle the side fold problem of pole piece area.
Please refer to fig. 1, which is a flowchart illustrating a pole piece strip side corrugation processing method according to an embodiment of the present invention. The pole piece belt side edge corrugation processing method comprises the following steps of partially or completely.
S100: and winding the pole piece belt on a winding drum.
In this embodiment, the electrode strip is formed by coating conductive paste on a photo foil, where the conductive paste on the photo foil is used to manufacture positive and negative electrodes, that is, a coating area on the electrode strip is used to coat the conductive paste, and a photo foil area is formed around the coating area, where the photo foil area is a photo foil that is not coated with the conductive paste. The pole piece belt is provided with a plurality of coating areas, so that the pole pieces can be manufactured in batches conveniently. And the pole piece belt is wound on the winding drum, so that the flat pole piece belt can be conveniently convoluted to form a pole piece coil, the area of a placement area required by the pole piece belt is reduced, and the pole piece coil can be conveniently placed in a baking oven for baking. Moreover, the pole pieces on the pole piece roll formed by winding are mutually superposed, so that heat conduction is facilitated, heat on each area of the pole piece roll is uniform, and the subsequent baking of the pole piece belt is facilitated.
S200: and baking the pole piece belt.
In this embodiment, the pole piece tape is wound to form a pole piece roll, so that the coating regions on the pole piece tape are arranged on top of each other. When the pole piece belt is baked, the conduction rate of heat on the pole piece belt is increased, and the fast baking of the pole piece belt is facilitated. Moreover, because the pole piece belt is wound, all areas of the pole piece belt are heated uniformly, the consistent heating of the head and the tail of the pole piece roll is ensured, the stress release degree on the pole piece belt is consistent, the stress on the side edge of the pole piece belt is consistent, and the wrinkle probability of the side edge of the pole piece belt is reduced when the pole piece belt is divided.
S300: unreeling the pole piece belt, and cutting off the optical foil in the optical foil area on the side edge of the pole piece belt, wherein the pole piece belt comprises a coating area and an optical foil area, and the optical foil area is positioned outside the coating area.
In this embodiment, before rolling the pole piece belt, the pole piece belt is unreeled, so that the pole piece belt is flattened, and the pole piece belt is conveniently rolled. Before the pole piece belt enters the roller press, the smooth foils in the smooth foil areas on the side edges of the pole piece belt are cut, namely the smooth foils on the two sides of the pole piece belt are cut off, so that the smooth foil areas on the two sides of the pole piece belt are removed, redundant smooth foils on the two sides of the pole piece belt are cut off, the ductility of the side edges of the pole piece belt is consistent, the ductility consistency of the pole piece belt during rolling is improved, the side edges of the pole piece belt are only provided with coating areas coated with conductive slurry during rolling, the ductility of the side edges of the pole piece belt is identical to the ductility of other positions of the pole piece belt, and the wrinkle probability of the side edges of the pole piece belt is reduced during striping. In other embodiments, the optical foils on both sides of the pole piece strip are cut so that the chance of wrinkles on both sides of the pole piece strip is reduced.
S400: and rolling the pole piece belt.
In this embodiment, when the pole piece strip is rolled, the pole piece strip is baked, so that the stress on the pole piece strip is released, and the smooth foil on the side edge of the pole piece strip is cut, so that only the paint area is on the side edge of the pole piece strip, and thus the thickness of the side edge of the pole piece strip is consistent, and the ductility of the side edge of the pole piece strip is consistent. Therefore, when the pole piece belt is rolled, the extension rate of the side edge of the pole piece belt is the same as that of other positions, so that the pole piece belt extends in parallel, and the wrinkle probability of the side edge of the pole piece belt is reduced.
In the above embodiment, before the pole piece area is rolled, the pole piece area is wound first, and the wound pole piece area is baked, so that the stress release of the two sides of the pole piece area is ensured, and then the optical foil on the side edge of the pole piece area is cut off, so that the thickness of the side edge of the pole piece area is consistent, so that the ductility of the side edge of the pole piece area is consistent, namely the ductility of the side edge of the pole piece area is the same, so that when the pole piece area is divided into strips, the side edge stress of the pole piece area is uniform, the flatness of the side edge of the pole piece area is improved, and the probability of wrinkles appearing on the pole piece area is reduced. And only need to carry out coiling toasting and the cutting of smooth foil to the pole piece area for the fold processing degree of difficulty of pole piece area reduces, is convenient for handle the side fold problem of pole piece area.
In one embodiment, the baking process for the pole piece strip includes: and baking the pole piece belt under a preset condition. In this embodiment, the pole piece strip is baked, and the baking parameters of the pole piece strip need to be controlled, so that the stress in the pole piece strip is completely released, the stress uniformity of the pole piece strip during striping is improved, and the wrinkle probability of the pole piece strip is reduced. The baking of the pole piece belt is performed before the rolling process, the pole piece belt is wound into a pole piece roll before the baking, and the stress in the pole piece belt can be released only by controlling the baking conditions of the pole piece belt, so that the baking process of the pole piece belt is simple to operate, and the wrinkle treatment difficulty of the pole piece belt is reduced.
Further, the preset conditions include a preset temperature, a preset time and a preset pressure. In this implementation, the pole piece belt is baked, so that the stress in the pole piece belt is released, and the baking environmental condition of the pole piece belt affects whether the stress can be completely released. Wherein the baking temperature of the pole piece strip influences the conduction rate of heat on the pole piece strip, thereby influencing the stress release rate of the pole piece strip. In one embodiment, the preset temperature is 100-120 ℃, so that the baking temperature of the pole piece belt is high, heat conduction on the pole piece belt is accelerated, and the stress release rate of the pole piece belt is increased.
In another embodiment, under the condition that the baking temperature of the pole piece strip is determined, the preset time is 2-4 hours, so that the baking time of the pole piece strip at the preset temperature is longer, the stress on the pole piece strip is completely released, the stress on the pole piece strip is more uniform, and the wrinkle probability of the side edge of the pole piece strip is further reduced.
In addition, in this embodiment, the baking pressure of the pole piece strip is the preset pressure, and the preset pressure is greater than 0 pa, that is, the pole piece strip is baked in a non-vacuum environment. In other embodiments, the pole piece belt is baked in an atmospheric pressure environment, so that the pressure of the pole piece belt is prevented from being changed, that is, a vacuumizer is not required to change the environmental pressure of the pole piece belt, and the manufacturing cost of the pole piece belt is reduced.
In one embodiment, the material of the reel comprises silicone. In this embodiment, the reel includes fiber container and silica gel layer, the silica gel layer with the outside of fiber container is connected, the silica gel layer be used for with the pole piece area butt, promptly the pole piece area wind in on the silica gel layer, also promptly the silica gel layer is located the fiber container with between the pole piece area. Because the material on silica gel layer is silica gel, it has certain deformability, promptly the reel has elastic deformation ability. And along with the increase of the number of the winding layers of the pole piece belt on the silica gel layer, the winding diameter of a pole piece winding formed by the pole piece belt is increased. Therefore, the pole piece belt extrudes the silica gel layer, the silica gel layer provides an expansion space and a rebound resilience performance rebound space for the pole piece belt, and the stress on the pole piece belt is conveniently released. And the surface of the silica gel layer is smooth, the thickness is uniform, and the ductility and the resilience deformation resistance of the silica gel layer are good, so that the winding drum can effectively buffer the rebound force and the stress of the pole piece during winding, and the pole piece is ensured to be wound neatly and in consistent tension.
In one embodiment, the rolling treatment of the pole piece strip includes: and carrying out cold pressing on the pole piece belt. In this embodiment, since the pole piece tape is baked at a high temperature before being rolled, the surface temperature of the pole piece tape is high. In order to ensure complete stress release in the pole piece belt, the temperature of the pole piece belt is cooled to normal temperature, then the pole piece belt is rolled, namely the pole piece belt is subjected to cold pressing treatment, so that the pole piece belt has enough time to release stress before rolling, stress on two sides of the pole piece belt is consistent, the extensibility of the two sides of the pole piece belt is identical, the side stress of the pole piece belt is uniform when the pole piece belt is divided, the flatness of the side of the pole piece belt is improved, and the probability of wrinkles of the pole piece belt is reduced.
In one embodiment, the rolling process is performed on the pole piece strip, and then the method further includes: and winding the pole piece belt on a conveying roller, and performing edge stretching treatment on the pole piece belt. In this embodiment, install on the transfer roller and take the teflon axle sleeve, take teflon axle sleeve to locate on the transfer roller promptly, wherein, the transfer roller does the reel, promptly take teflon axle sleeve to locate the surface on silica gel layer. Through right the hole of aerifing on the transfer roller lets in gas for the diameter increase of transfer roller, thereby make the silica gel layer with transfer roller interference connection is convenient for with take the teflon axle sleeve to fix on the transfer roller. And the pole piece belt is wound on the conveying roller, so that the baked and cut pole piece belt is conveniently stretched, and the ductility consistency of the pole piece belt is further improved.
In one embodiment, the rolling process is performed on the pole piece strip, and then the method further includes: carrying out slitting treatment and slitting treatment on the pole piece belt, and obtaining a pole piece; winding the pole piece tape to form a winding core; acquiring the thicknesses of two ends of the roll core; detecting whether the thickness is matched with a preset thickness; and when the thickness is matched with the preset thickness, sending a qualified signal to a monitoring system. In this embodiment, the pole piece strip is subjected to high-temperature baking and cutting of the smooth foil area before rolling, so that the expansion rates of the two sides of the produced pole piece strip are consistent. In order to verify the wrinkle condition of the pole piece after the wrinkle treatment method on the side edge of the pole piece belt, the quality of the pole piece on the pole piece belt is detected. And carrying out slitting treatment and slitting treatment on the pole piece belt so as to obtain a plurality of pole pieces. And (3) convolving each pole piece into a roll core, and detecting the thickness of the two ends of the roll core, namely detecting the thickness of the roll head and the roll tail of each roll core. Because when the fold appears on the pole piece area, the produced pole piece is wound to form a roll core with increased thickness, and the fold condition of two sides of the pole piece can be detected by detecting the thickness of the roll head and the roll tail of the roll core. In this way, in the detection of the thickness of the two ends of the winding core, the winding head and the winding tail of each winding core are respectively compared, and whether the fold processing method for the side edge of the pole piece belt is improved or not is determined by comparing the preset thickness. And detecting the thickness of the head and the tail of the roll core by adopting X-RAY measuring equipment.
Specific examples are given below:
the conventional examples 1 to 3 are pole piece winding cores produced by the conventional pole piece manufacturing method, that is, a coated pole piece tape is rolled, then the pole piece tape is slit and stripped to form a plurality of pole pieces, and finally each pole piece is wound into a winding core;
the following table 1 is a comparison of thickness tests of the roll heads and the roll tails of the conventional examples 1 to 3 and the examples 1 to 3, in which the pole pieces of the conventional examples 1 to 3 and the examples 1 to 3 are all used for manufacturing and producing lithium ion batteries.
TABLE 1
As can be readily seen from table 1, although the thicknesses of the leading edge and the trailing edge of the electrode sheets of conventional examples 1 to 3 are within the standard ranges, the thicknesses of the leading edge and the trailing edge of the electrode sheets produced by the conventional electrode sheet manufacturing method are both large. The thickness of the head and the tail of the pole piece processed by the pole piece strip side edge wrinkle processing method is smaller than that of the head and the tail of the pole piece processed by the traditional pole piece strip side edge wrinkle processing method. Moreover, the maximum thickness of the head and the tail of the pole piece is smaller than the minimum thickness of the head and the tail of the pole piece in the traditional case, which shows that the thickness of the winding core wound by the pole piece treated by the pole piece strip side edge corrugation treatment method is lower than that of the traditional case, and the wrinkles of the side edge of the pole piece treated by the pole piece strip side edge corrugation treatment method are reduced, namely, the pole piece strip side edge corrugation treatment method improves the flatness of the side edge of the pole piece strip, reduces the probability of the wrinkles of the pole piece strip, and accordingly improves the qualification rate of the pole piece strip for manufacturing the lithium battery.
In addition to the improved wrinkling of the pole piece strip, the precision with which the strip is subjected to the cutting of the optical foil needs to be adjusted. If the precision of cutting smooth foil is lower, cut the part excision in coating district easily, lead to the pole piece unqualified that produces, perhaps, the smooth foil that cuts is incomplete, partial smooth foil is remained promptly, also the side of pole piece area has smooth foil still, this pole piece that just leads to producing still has the problem of fold, and in addition, unnecessary smooth foil makes the shape of the pole piece of producing irregular, make the core of rolling up that makes out not conform to the standard, cause the waste of raw and other materials, thereby manufacturing cost has been improved.
In order to improve the yield of the pole piece strip, before cutting off the optical foil in the optical foil area at the side edge of the pole piece strip, the method comprises the following steps:
acquiring a first cut image of the pole piece belt;
acquiring a first distance of the coating area along a preset direction according to the first cutting image;
after the cutting of the optical foil in the optical foil area at the side edge of the pole piece strip, the method comprises the following steps:
acquiring a second cut image of the pole piece belt;
acquiring a second distance of the coating area along a preset direction according to the second cutting image;
detecting whether the difference value of the first distance and the second distance is matched with a first preset difference value;
and when the difference value is matched with the first preset difference value, sending a cutting qualified signal to a monitoring system.
In this embodiment, the first cut image is an image when the optical foil cutting of the pole piece tape has not been started, that is, the first cut image includes a paint region and an uncut optical foil region. The first distance is the width of the first cropped image, i.e., the first distance is the distance between the sides of the first cropped image, i.e., the first distance is the total width of the paint and smooth foil areas in the first cropped image. And the second cut image is an image obtained after the optical foil of the pole piece belt is cut, namely the second cut image comprises a coating area, and the cut optical foil area needs to be determined according to the comparison of distances. The second distance is a width of the second cropped image, i.e., the second distance is a distance between two sides of the second cropped image. The difference is the difference between the first distance and the second distance, and whether the paint area is excessively cut or the optical foil area is incompletely cut is conveniently determined in the cutting process according to the difference. In this embodiment, the first preset difference is the width of the coating area on the pole piece strip, and whether the difference is matched with the first preset difference is to detect whether the difference is equal to the first preset difference, and when the difference is matched with the first preset difference, it indicates that the difference is equal to the first preset difference, that is, after the optical foil area is cut, the width of the pole piece strip is equal to the width of the coating area, that is, after the optical foil area is cut, the optical foils on both sides of the pole piece strip are completely cut, so that the cutting of the redundant optical foils on both sides of the pole piece strip is ensured, and the cutting of the coating area on the pole piece strip is also avoided, thereby improving the yield of the pole piece strip.
Furthermore, in the cutting process of the smooth foil area, the smooth foil area is arranged on each of the two sides of the pole piece belt, and the roll cutting device with the double-roll cutter is used for cutting, so that the pole piece belt can be conveniently cut at one time. By taking the first distance and the second distance and comparing the difference values, if the two-roll cutters move in parallel, although the difference value can be guaranteed to be equal to the first preset difference value, one of the two sides of the pole piece strip will have a part of the coating area cut off, and the other side of the pole piece strip will have a part of the light foil which is not cut off, so that the manufactured pole piece strip is unqualified.
In order to reduce the occurrence of the above-mentioned situation, the cutting of the optical foil in the optical foil area at the side edge of the pole piece strip comprises:
acquiring a paint area image and a smooth foil area image of the pole piece belt;
acquiring boundary track parameters of the coating area and the optical foil area according to the coating area image and the optical foil area image;
acquiring displacement track parameters of a roller cutter;
detecting whether the displacement track parameters are matched with the boundary track parameters;
and when the displacement track parameter is not matched with the boundary track parameter, sending a stop signal to the roll cutting device.
In this embodiment, the boundary trace parameter is a parameter set composed of positions at a boundary between the paint region and the optical foil region on the pole piece strip, that is, the boundary trace parameter corresponds to an interface line formed by the paint region and the optical foil region. The displacement track parameter is a current position parameter of the roller cutter, namely, after each movement of the roller cutter, the position of the roller cutter changes, and the corresponding displacement track parameter also changes. And comparing the displacement track parameter updated each time by the roller cutter with the boundary track parameter, namely comparing the displacement track parameter with each of the boundary track parameters, and when the displacement track parameter is matched with the boundary track parameter, indicating that the current position parameter of the roller cutter is the same as one of the boundary track parameters, namely indicating that the current position of the roller cutter is positioned on the boundary line of the coating area and the smooth foil area. And when the displacement track parameter is not matched with the boundary track parameter, the current position parameter of the roller cutter is indicated to be different from each parameter of the boundary track parameter, namely the current position of the roller cutter is indicated to be positioned outside a boundary line of the coating area and the smooth foil area, namely the current position of the roller cutter is indicated not to be positioned on the boundary line of the coating area and the smooth foil area. Therefore, when the displacement track parameter is not matched with the boundary track parameter, a stop signal is sent to the roller cutting device, so that the roller cutting device stops operating, the roller cutter stops moving, the error cutting of the pole piece belt is avoided, and the percent of pass of the pole piece belt is improved.
Still further, because the pole piece belt is used for manufacturing pole pieces in mass production, the area of the conductive paste coated on the pole piece belt is multiple, namely, at least two coating areas exist on the pole piece belt. In order to manufacture the pole piece, a part of optical foil needs to be reserved at one end of the pole piece, a current collector of the pole piece is convenient to manufacture, namely a connection position is provided for the current collector of the pole piece, a gap is reserved between two adjacent coating areas, and therefore the gap optical foil area is reserved between the two adjacent coating areas. In the process of obtaining the boundary track parameters of the coating area and the optical foil area, the position parameters corresponding to the boundary of the gap optical foil area and the coating area are easily brought into the boundary track parameters, so that the gap optical foil area which must exist is also cut off from the pole piece belt, and the whole pole piece belt is scrapped.
In order to reduce the scrap rate of the pole piece strip, the optical foil in the optical foil area at the side edge of the pole piece strip is cut off, and the method further comprises the following steps:
acquiring a boundary image of the pole piece strip;
acquiring a cross position parameter of a gap optical foil area and an optical foil area according to the boundary image;
detecting whether the displacement track parameters are matched with the cross position parameters;
and when the displacement track parameters are matched with the cross position parameters, sending a straight signal to the roller cutting device so as to enable the roller cutter to move along a preset direction.
In this embodiment, the coating area is a rectangular area, and the intersections of the gap optical foil area and the optical foil area are four right-angle points of the rectangular area of the gap optical foil area, respectively. When the displacement track parameter is matched with the cross position parameter, the current position of the roller cutter is indicated to move to the critical position of the coating area and the gap smooth foil area, and the roller cutter is indicated to move into the gap smooth foil area. If the roller cutter cuts according to the track corresponding to the boundary track parameters, the roller cutter must move along the boundary between the coating area and the gap smooth foil area, so that the coating area is directly cut off from the pole piece belt, and the pole piece belt is scrapped. Therefore, when the displacement track parameter is matched with the cross position parameter, the moving direction of the roller cutter is controlled, namely the roller cutter is controlled to move along the preset direction, so that the roller cutter is prevented from entering a gap smooth foil area, and the rejection rate of the whole pole piece belt is reduced. The side edge of the coating area is parallel to the side edge of the pole piece strip, and the preset direction is parallel to the side edge of the pole piece strip. Therefore, when the roller cutter moves to the junction of the coating area and the gap smooth foil area, the roller cutter continues to move in the direction parallel to the side edge of the coating area, the roller cutter is prevented from cutting the gap smooth foil area, and the rejection rate of the pole piece strip is reduced.
The application also provides a pole piece area side fold treatment facility. Further, in one embodiment, the pole piece strip side edge folding processing device is implemented by using the pole piece strip side edge folding processing method described in any one of the above embodiments. Or, the pole piece strip side edge corrugation processing apparatus is used for implementing the pole piece strip side edge corrugation processing method according to any one of the above embodiments, that is, the pole piece strip side edge corrugation processing apparatus has corresponding modules for implementing the steps of the pole piece strip side edge corrugation processing method according to any one of the above embodiments. The pole piece area side fold treatment facility includes: installation base, reel, toast case and roller cutting device. The reel is disposed adjacent to the roll cutting device. The winding drum is rotatably connected with the mounting base. The winding drum is used for winding and unwinding the pole piece belt. The baking box is connected with the mounting base. The baking oven is used for baking the pole piece belt. The roll cutting device is connected with the mounting base. The roll cutting device is used for cutting off the smooth foil in the smooth foil area on the side edge of the pole piece strip.
In one embodiment, the roll cutting apparatus includes a base, a drive assembly, and a roll cutting assembly. The drive assembly includes two drive members and at least one transmission member. At least one of the conductors is located between two of the drivers. Each driving piece comprises a driving motor, a driving shaft and a winding shaft sleeve. The driving motor is arranged on the base. An output shaft of the drive motor is connected with the drive shaft. The scroll sleeve is sleeved on the driving shaft. And the output shafts of the driving motors of the two driving pieces rotate in the same direction. Each of the conductors includes a first conductor and a second conductor. The first transmission member includes a first transmission shaft and a first connection plate. The first connecting plate is connected with the base, and the first transmission shaft is rotatably connected with the first connecting plate. The second conductor includes a second conductive shaft and a second connecting plate. The second connecting plate with the base is connected, the second conduction axle with the second connecting plate rotates to be connected. The first conducting shaft and the second conducting shaft are arranged in parallel, and the distance between the first conducting shaft and the base is smaller than the distance between the second conducting shaft and the base. The roll cutting assembly is located between the two drive members. The roll cutting assembly comprises a roll cutting bracket and a roll cutting piece. The roll cutting support is connected with the base. The roll cutting piece comprises a roll cutting slide rod and a roll cutting tool. The roll cutting support is provided with a sliding cavity. At least part of the roller cutting slide rod is movably arranged in the slide cavity. The roller cutting slide rod is connected with the roller cutting tool, and the tool bit of the roller cutting tool faces the base. Through offering the slip chamber at the roll cutting support, when the position that needs the adjustment to cut the pole piece, the roll is cut the slide bar and is removed at the slip intracavity to drive the roll cutter and remove, make the roll cutter and the position adjustment between the pole piece that needs cut, thereby make the roll cutter cut out the pole piece of different specification shapes, improved the suitability of roll cutting device.
Please refer to fig. 2, which is a schematic perspective view of a roll cutting apparatus according to an embodiment of the present application.
The roll cutting apparatus 10 of an embodiment includes a base 100, a drive assembly 200, and a roll cutting assembly 300. The driving assembly 200 includes two driving members 210 and at least one conducting member 220. At least one of the conductors 220 is located between two of the drivers 210. Each of the driving members 210 includes a driving motor 212, a driving shaft 214, and a winding shaft sleeve 216. The driving motor 212 is disposed on the base 100. An output shaft of the driving motor 212 is connected to the driving shaft 214. The winding shaft sleeve 216 is sleeved on the driving shaft 214. The output shafts of the driving motors 212 of the two driving members 210 rotate in the same direction. Each of the conductive elements 220 includes a first conductive element 222 and a second conductive element 224. The first guide 222 includes a first guide shaft 2222 and a first connection plate 2224. The first connecting plate 2224 is connected to the base 100, and the first conductive shaft 2222 is rotatably connected to the first connecting plate 2224. The second conductive element 224 includes a second conductive shaft 2242 and a second connecting plate 2244. The second connecting plate 2244 with the base 100 is connected, the second conduction axle 2242 with the second connecting plate 2244 rotates to be connected. First conductive axle 2222 with second conductive axle 2242 parallel arrangement, just first conductive axle 2222 with the interval of base 100 is less than second conductive axle 2242 with the interval of base 100. The roll cutting assembly 300 is positioned between two of the drives 210. Referring also to fig. 2, the rolling cutting assembly 300 includes a rolling cutting frame 310 and a rolling cutting member 320. The roll cutting support 310 is connected to the base 100. The rolling cutter 320 includes a rolling slide 322 and a rolling cutter 324. The roll cutting support 310 is provided with a sliding cavity 312. At least part of the roller cutting slide bar 322 is movably disposed in the slide cavity 312. The rolling and cutting slide rod 322 is connected with the rolling and cutting tool 324, and the tool bit of the rolling and cutting tool 324 faces the base 100.
In this embodiment, by forming the sliding cavity 312 in the rolling and cutting bracket 310, when the position of the pole piece needs to be adjusted, the rolling and cutting slide rod 322 moves in the sliding cavity 312, so as to drive the rolling and cutting tool 324 to move, so that the position between the rolling and cutting tool 324 and the pole piece to be cut is adjusted, and the rolling and cutting tool 324 cuts pole pieces with different specifications and shapes, thereby improving the applicability of the rolling and cutting device. In other embodiments, the quantity of roller cutting piece is two, is convenient for once only cut the smooth foil of the both sides in pole piece area, and moreover, the pole piece area passes through in proper order first conduction axle is close to one side of base and second conduction axle deviates from one side of base, first conduction axle with the height setting of second conduction axle is convenient for flatten the pole piece area, ensures the roughness in pole piece area to the pole piece that the roller cutting utensil of being convenient for cut out the accord with requirement.
In one embodiment, referring to fig. 2 and fig. 3, the rolling cutting support 310 further has a guiding through hole 314, the guiding through hole 314 is communicated with the sliding cavity 312, and the rolling cutter 324 is inserted into the guiding through hole 314 and connected to the rolling cutting slide rod 322. In this embodiment, the opening of the guiding through hole 314 faces the base 100, the guiding through hole 314 is used for receiving the roller cutter 324, and the extending direction of the guiding through hole 314 is the same as the extending direction of the sliding cavity 312. Since the rolling cutter 324 moves along with the rolling cutter slide rod 322, when the rolling cutter slide rod 322 slides in the slide cavity 312, the rolling cutter 324 slides in the guide through hole 314, and the guide through hole 314 limits the rolling cutter 324 to move therein, so as to guide the movement of the rolling cutter 324. Therefore, when different pole pieces need to be cut, the position of the roller cutting tool 324 in the guide through hole 314 can be adjusted by adjusting the position of the roller cutting slide rod 322 in the slide cavity 312, so that the relative position between the roller cutting tool 324 and the base 100 is adjusted, the roller cutting tool 324 can cut different positions of the pole pieces, the roller cutting tool 324 can cut the pole pieces with different specifications and shapes, and the applicability of the roller cutting device is improved.
In one embodiment, referring to fig. 2 to 4, the rolling cutting assembly 300 further includes a positioning rod 330, the rolling cutting bracket 310 further defines a positioning hole 316, the positioning hole 316 is communicated with the sliding cavity 312, and the positioning rod 330 is inserted into the positioning hole 316 and connected to the rolling cutting slide rod 322. In the present embodiment, the positioning hole 316 corresponds to the positioning rod 330, and the positioning hole 316 is communicated with the sliding cavity 312. When the roller cutting slide bar 322 slides to a designated position in the slide cavity 312, the roller cutting slide bar 322 corresponds to the positioning hole 316, and at this time, the positioning rod 330 passes through the positioning hole 316 and protrudes into the slide cavity 312, so that the positioning rod 330 abuts against the roller cutting slide bar 322, and the roller cutting slide bar 322 is clamped by the positioning rod 330 and the side wall of the slide cavity 312, and further the roller cutting slide bar 322 is fixed in the slide cavity 312, so that the roller cutting slide bar 322 is positioned at the designated position, and the stability of the roller cutting slide bar 322 in the slide cavity 312 is improved. In other embodiments, the number of the positioning holes 316 is multiple, and a plurality of the positioning holes 316 are sequentially arranged on the roller cutting support 310. The plurality of positioning holes 316 provide different positioning positions for the rolling slide bar 322, so that the position of the rolling cutter 324 can be adjusted conveniently according to the specification and shape of the cut pole piece, the applicability of the rolling cutter 324 in cutting different pole pieces is improved, and the applicability of the rolling cutting device is improved.
Further, the roller cutting slide bar is provided with a first groove, and at least part of the positioning rod is positioned in the first groove. In this embodiment, the locating lever card is located in the first recess, promptly the locating lever with the lateral wall butt of first recess, also promptly the lateral wall of first recess encircles and the centre gripping the locating lever, makes the locating lever stably set up in the first recess, thereby make the locating lever with roller cuts slide bar stable connection, has improved the locating lever with the stability of being connected between the roller cuts the slide bar.
In one embodiment, referring to fig. 2, fig. 3 and fig. 5, the rolling cutting assembly 300 further includes a fixing rod 340, the rolling cutting bracket 310 further defines a fixing hole 318, the fixing hole 318 is communicated with the sliding cavity 312, the rolling cutting slide rod 322 defines a second groove, and the fixing rod 340 is respectively inserted into the fixing hole 318 and the second groove. In this embodiment, the fixing hole 318 is opened at one side of the roller cutting support 310, the fixing rod 340 sequentially passes through the fixing hole 318 and the second groove, that is, one end of the fixing rod 340 passes through the fixing hole 318 and protrudes into the second groove, the fixing hole 318 is opened on the roller cutting support 310, the second groove is opened on the roller cutting slide bar 322, so that the fixing rod 340 is respectively connected with the roller cutting support 310 and the roller cutting slide bar 322 in a clamping manner, and the roller cutting slide bar 322 is fixed on the roller cutting support 310. Therefore, when cutting is not needed, in order to avoid collision between the rolling cutter 324 and other devices, the rolling cutter slide rod 322 is connected with the fixing rod 340, so that the rolling cutter 324 can be conveniently moved to the edge of the rolling cutting bracket 310, the collision probability between the rolling cutter 324 and other devices is reduced, the damage probability of the rolling cutter 324 is reduced, and the service life of the rolling cutter 324 is prolonged.
In one embodiment, referring to fig. 2 and fig. 3, the rolling cutting support 310 is provided with a receiving groove 311, and an opening of the receiving groove 311 faces the rolling cutting tool 324. In this embodiment, the receiving groove 311 is opened at the inner side of the rolling and cutting frame 310, the rolling and cutting tool 324 is movable at the inner side of the rolling and cutting frame 310, moreover, the opening of the receiving groove 311 is disposed toward the rolling cutter 324, and when the rolling cutter 324 needs to be protected, i.e., when no cutting work is required, by moving the roll-cutting slide bar 322 located within the slide cavity 312, thereby driving the rolling cutter 324 to move, moving the rolling cutter 324 to the accommodating groove 311, so that the rolling cutter 324 is accommodated in the accommodating groove 311, the accommodating groove 311 protects the rolling cutter 324, so that the probability of collision between the rolling cutter 324 and other devices is further reduced, the probability of damage to the rolling cutter 324 is further reduced, and the service life of the rolling cutter 324 is further prolonged.
In one embodiment, referring to fig. 2 and fig. 6, the winding shaft sleeve 216 is provided with a holding through groove 2162, and the extending direction of the holding through groove 2162 is parallel to the axial direction of the driving shaft 214. In this embodiment, the winding sleeve 216 is used for winding or unwinding a pole piece strip having a plurality of pole pieces, and two ends of the pole piece strip are respectively connected to the winding sleeve 216, wherein the end of the pole piece strip is received in the clamping through groove 2162, i.e. the end of the pole piece strip is clamped in the clamping through groove 2162, and the two side walls of the clamping through groove 2162 clamp the end of the pole piece strip, i.e. the two side walls of the clamping through groove 2162 are respectively abutted to two sides of the end of the pole piece strip, so that the pole piece strip is fixed on the winding sleeve 216. In this way, the driving motor 212 drives the winding shaft sleeve 216 to rotate by rotating the driving shaft 214, so as to wind or unwind the pole piece belt.
Further, referring to fig. 2 and fig. 6, the driving assembly 200 further includes two fixing members 230, each fixing member 230 corresponds to one of the driving members 210, each fixing member 230 includes a fixing rotating shaft 232, a fixing rotating plate 234 and a fixing pin 236, the fixing rotating shaft 232 is connected to an end of the winding shaft sleeve 216, the fixing rotating plate 234 is rotatably connected to the fixing rotating shaft 232, the fixing rotating plate 234 covers a portion of the clamping through groove 2162, the fixing rotating plate 234 is provided with a through hole 2342, the fixing pin 236 is inserted into the through hole 2342 and is connected to the end of the winding shaft sleeve 216, and the fixing pin 236 and the fixing rotating shaft 232 are located on the same side of the winding shaft sleeve 216. In this embodiment, each of the fasteners 230 is configured to change the inner diameter of the corresponding spool sleeve 216. Since the winding shaft sleeve 216 is provided with the holding through groove 2162, and the winding shaft sleeve 216 is made of silicone, that is, the winding shaft sleeve 216 has a certain deformation capability, the holding through groove 2162 penetrates through the winding shaft sleeve 216, so that the driving shaft 214 can pass through the holding through groove 2162, the winding shaft sleeve 216 can be separated from the driving shaft 214, and the maintenance of the winding shaft sleeve 216 and the driving shaft 214 is facilitated. When the winding shaft sleeve 216 is wound or unwound, the rotation of the winding shaft sleeve causes the opening of the clamping through groove 2162 to increase, that is, the caliber of the clamping through groove 2162 increases, that is, the distance between the two side walls of the clamping through groove 2162 increases, so that the connection stability between the pole piece belt and the winding shaft sleeve 216 is reduced, and the pole piece belt is easily separated from the winding shaft sleeve 216. In order to improve the connection stability between the pole piece belt and the winding shaft sleeve 216, for each driving member 210, a fixing member 230 is correspondingly arranged for fixing, one end of the fixed rotating plate 234 is connected with the fixed rotating shaft 232, the other end of the fixed rotating plate 234 is connected with the fixing pin 236, and the fixed rotating plate 234 crosses the clamping through groove 2162, so that the fixed rotating plate 234 fixes the distance between the two side walls of the clamping through groove 2162, the probability of increasing the caliber of the clamping through groove 2162 when the winding shaft sleeve 216 rotates is reduced, and the pole piece belt is ensured to be stably clamped in the clamping through groove 2162. Moreover, in this embodiment, the quantity of through-hole is a plurality of, is convenient for according to the thickness in pole piece area, the corresponding adjustment the interval between the both sides wall that the centre gripping led to the groove.
The present application further provides a roll cutting apparatus, comprising: installation base and the roll cutting device of any preceding embodiment. The base is connected with the mounting base. In this embodiment, the roll cutting device includes a base, a driving assembly, and a roll cutting assembly. The drive assembly includes two drive members and at least one transmission member. At least one of the conductors is located between two of the drivers. Each driving piece comprises a driving motor, a driving shaft and a winding shaft sleeve. The driving motor is arranged on the base. An output shaft of the drive motor is connected with the drive shaft. The scroll sleeve is sleeved on the driving shaft. And the output shafts of the driving motors of the two driving pieces rotate in the same direction. Each of the conductors includes a first conductor and a second conductor. The first transmission member includes a first transmission shaft and a first connection plate. The first connecting plate is connected with the base, and the first transmission shaft is rotatably connected with the first connecting plate. The second conductor includes a second conductive shaft and a second connecting plate. The second connecting plate with the base is connected, the second conduction axle with the second connecting plate rotates to be connected. The first conducting shaft and the second conducting shaft are arranged in parallel, and the distance between the first conducting shaft and the base is smaller than the distance between the second conducting shaft and the base. The roll cutting assembly is located between the two drive members. The roll cutting assembly comprises a roll cutting bracket and a roll cutting piece. The roll cutting support is connected with the base. The roll cutting piece comprises a roll cutting slide rod and a roll cutting tool. The roll cutting support is provided with a sliding cavity. At least part of the roller cutting slide rod is movably arranged in the slide cavity. The roller cutting slide rod is connected with the roller cutting tool, and the tool bit of the roller cutting tool faces the base. Through offering the slip chamber at the roll cutting support, when the position that needs the adjustment to cut the pole piece, the roll is cut the slide bar and is removed at the slip intracavity to drive the roll cutter and remove, make the roll cutter and the position adjustment between the pole piece that needs cut, thereby make the roll cutter cut out the pole piece of different specification shapes, improved the suitability of roll cutting device.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A pole piece belt side edge corrugation processing method is characterized by comprising the following steps:
winding the pole piece belt on a winding drum;
baking the pole piece belt;
unreeling the pole piece belt, and cutting off optical foils in optical foil areas positioned on the side edges of the pole piece belt, wherein the pole piece belt comprises a coating area and an optical foil area, and the optical foil areas are positioned outside the coating area;
and rolling the pole piece belt.
2. The pole piece strip side edge corrugation processing method according to claim 1, wherein the baking processing of the pole piece strip comprises:
and baking the pole piece belt under a preset condition.
3. The method for wrinkling the side edge of the pole piece belt according to claim 2, wherein the preset conditions comprise a preset temperature, a preset time and a preset pressure.
4. The pole piece strip side edge corrugation processing method according to claim 3, wherein the preset temperature is 100-120 ℃.
5. The method for wrinkling the side edge of the pole piece belt according to claim 3, wherein the preset time is 2 to 4 hours.
6. The method for wrinkling the side edge of a pole piece belt according to claim 3, wherein said preset pressure is greater than 0 Pa.
7. The method for wrinkling the side edge of the pole piece belt according to claim 1, wherein the material of the winding drum comprises silicone rubber.
8. The pole piece strip side edge corrugation processing method according to claim 1, wherein the roll processing of the pole piece strip comprises:
and carrying out cold pressing on the pole piece belt.
9. The method for processing the side edge corrugation of the pole piece strip according to claim 1, wherein the step of rolling the pole piece strip further comprises the following steps:
carrying out slitting treatment and slitting treatment on the pole piece belt, and obtaining a pole piece;
winding the pole piece to form a winding core;
acquiring the thicknesses of two ends of the roll core;
detecting whether the thickness is matched with a preset thickness;
and when the thickness is matched with the preset thickness, sending a qualified signal to a monitoring system.
10. A pole piece belt side edge corrugation processing device is characterized by comprising: the device comprises a mounting base, a winding drum, a baking box and a roll cutting device;
the winding drum is arranged close to the roller cutting device, is rotatably connected with the mounting base and is used for winding and unwinding the pole piece belt;
the baking box is connected with the mounting base and is used for baking the pole piece belt;
the roll cutting device is connected with the mounting base and used for cutting off the optical foils in the optical foil areas on the side edges of the pole piece strip.
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| CN202010801875.7A CN111916677B (en) | 2020-08-11 | 2020-08-11 | Method and equipment for processing side wrinkles of pole piece belt |
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| CN202010801875.7A CN111916677B (en) | 2020-08-11 | 2020-08-11 | Method and equipment for processing side wrinkles of pole piece belt |
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| CN111916677A true CN111916677A (en) | 2020-11-10 |
| CN111916677B CN111916677B (en) | 2021-11-12 |
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| CN114203974A (en) * | 2021-12-15 | 2022-03-18 | 安徽统凌科技新能源有限公司 | Lithium battery pole piece baking and placing tool |
| CN114535934A (en) * | 2022-02-23 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Pole piece rolling method and pole piece |
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| CN210349965U (en) * | 2019-10-12 | 2020-04-17 | 东莞力朗电池科技有限公司 | Pole piece rolling device |
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| CN108232119A (en) * | 2016-12-10 | 2018-06-29 | 深圳格林德能源有限公司 | A kind of technique for improving based lithium-ion battery positive plate edge wave-like |
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| CN114203974A (en) * | 2021-12-15 | 2022-03-18 | 安徽统凌科技新能源有限公司 | Lithium battery pole piece baking and placing tool |
| CN114203974B (en) * | 2021-12-15 | 2023-08-15 | 广东友飞翔新能源有限公司 | Lithium battery pole piece baking and placing tool |
| CN114535934A (en) * | 2022-02-23 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Pole piece rolling method and pole piece |
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| CN111916677B (en) | 2021-11-12 |
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Denomination of invention: Method and Equipment for Handling Side Fold of Polar Strip Effective date of registration: 20230721 Granted publication date: 20211112 Pledgee: Meixian Sub branch of Postal Savings Bank of China Co.,Ltd. Pledgor: MEIZHOU LIANGNENG NEW ENERGY TECHNOLOGY CO.,LTD. Registration number: Y2023980049324 |
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