WO2023130338A1 - 极片的叠片方法、装置和叠片机 - Google Patents

极片的叠片方法、装置和叠片机 Download PDF

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Publication number
WO2023130338A1
WO2023130338A1 PCT/CN2022/070630 CN2022070630W WO2023130338A1 WO 2023130338 A1 WO2023130338 A1 WO 2023130338A1 CN 2022070630 W CN2022070630 W CN 2022070630W WO 2023130338 A1 WO2023130338 A1 WO 2023130338A1
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Prior art keywords
pole piece
identifier
sequence
crease
image data
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PCT/CN2022/070630
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English (en)
French (fr)
Inventor
冯仕平
胡军
陈灿斌
常文
郑秋辉
吴卿
卢浩冉
赵家义
郭益泰
Original Assignee
宁德时代新能源科技股份有限公司
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to CN202280020503.8A priority Critical patent/CN116982185A/zh
Priority to JP2024502061A priority patent/JP2024526775A/ja
Priority to PCT/CN2022/070630 priority patent/WO2023130338A1/zh
Priority to EP22917812.4A priority patent/EP4369447A1/en
Priority to KR1020247001423A priority patent/KR20240019842A/ko
Publication of WO2023130338A1 publication Critical patent/WO2023130338A1/zh
Priority to US18/413,083 priority patent/US20240154149A1/en

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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
    • H01M10/04—Construction or manufacture in general
    • H01M10/045—Cells or batteries with folded plate-like electrodes
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M10/058—Construction or manufacture
    • H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
    • 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
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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

Definitions

  • the present application relates to the field of power batteries, in particular to a pole piece lamination method, device and lamination machine.
  • Energy saving and emission reduction is the key to the sustainable development of the automobile industry.
  • electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy saving and environmental protection.
  • battery technology is an important factor related to its development.
  • the stacking process One of the core manufacturing processes of power batteries is the stacking process.
  • the negative electrode sheet, diaphragm, positive electrode sheet, separator, and negative electrode sheet are generally stacked in sequence from bottom to top, or, from bottom to top.
  • Embodiments of the present application provide a pole piece lamination method, device and lamination machine, which can effectively reduce the scrap rate of battery cells.
  • a method for stacking pole pieces comprising: determining the transmission sequence for transmitting a plurality of second pole pieces according to a first pole piece, the first pole pieces being continuous pole pieces,
  • the plurality of second pole pieces includes at least one upper pole piece and at least one lower pole piece, the plurality of second pole pieces are non-continuous pole pieces, and the delivery sequence is used to process the at least one upper pole piece and the at least one lower pole piece are alternately transmitted; according to the transmission order, the identification sequence of the plurality of second pole pieces is generated; in the process of transmitting the plurality of second pole pieces according to the transmission order
  • the identification sequence the first image data of each second pole piece in the plurality of second pole pieces is collected.
  • the identification sequence of the second pole piece is generated according to the transmission order of the second pole piece, and during the process of transmitting the second pole piece according to the transmission order, according to the identification sequence of the second pole piece, each The image data of the second pole piece, so that the collected image data of each second pole piece corresponds to its own identification sequence.
  • the identification sequence of the second pole piece is generated according to the transmission order of the second pole piece, and during the process of transmitting the second pole piece according to the transmission order, according to the identification sequence of the second pole piece, each The image data of the second pole piece, so that the collected image data of each second pole piece corresponds to its own identification sequence.
  • the first pole piece is a continuous pole piece. Compared with firstly cutting the pole piece into sheets and then laminating, the first pole piece in the embodiment of the present application does not need to be cut, which effectively improves the efficiency of subsequent laminations. efficiency. And because the first pole piece is a continuous pole piece, the positional relationship between the first pole piece and the second pole piece can be better controlled when the first pole piece and the second pole piece are laminated, which is beneficial to Improve the accuracy between the first pole piece and the second pole piece. In addition, due to the improved precision, the positional relationship between the first pole piece and the second pole piece can reach the limit, and the energy density of pole pieces with the same area is higher, thereby increasing the energy density of the battery.
  • the method further includes: storing the identification sequence and the first image data, where the identification sequence corresponds to the first image data one by one.
  • the identification sequence and first image data of the second pole piece are stored, so that the first image data of each second pole piece can be traced and queried.
  • the pole piece in which the abnormality occurs can be determined directly according to the stored identification sequence and the first image data, which is not only simple to implement, but also effectively reduces the processing time.
  • the determining the transmission order of transmitting the plurality of second pole pieces according to the first pole piece includes: acquiring crease information of the first pole piece, the crease information being used to indicate the Whether at least one crease on the first pole piece is located on the upper surface or the lower surface of the first pole piece; according to the crease information, the transmission sequence is determined.
  • the above technical solution determines the transmission sequence of the upper pole piece and the lower pole piece in the second pole piece according to the creases in the first pole piece. On the one hand, it is simple to implement and can intuitively determine the transmission order of the second pole piece. On the other hand, there are multiple creases on the second pole piece to facilitate subsequent folding.
  • the crease information is used to indicate that the first crease of the at least one crease is located on the upper surface of the first pole piece, among the plurality of second pole pieces
  • the first transmission is the first upper pole piece of the at least one upper pole piece; if the crease information is used to indicate that the first crease of the at least one crease is located on the first pole
  • the lower surface of the sheet, the first of the plurality of second pole pieces to be conveyed is the first lower pole piece of the at least one lower pole piece to be conveyed.
  • the second pole piece to be conveyed first is the upper pole piece
  • the second pole piece to be transmitted first is the lower pole piece piece, so that the second pole piece can cover the creases on the first pole piece, so as to meet the process production requirements.
  • the method further includes: when cutting the continuous second pole piece into the at least one upper pole piece and the at least one lower pole piece, generating the at least one upper pole piece The first identification of the at least one lower pole piece and the second identification of the at least one lower pole piece; the first identification is stored in the first stack list, and the second identification is stored in the second stack list.
  • the first identification of the upper pole piece and the second identification of the lower pole piece are stored in different stack lists, which prevents confusion between the first identification and the second identification, for example, the first identification Mistaking the second mark as the first mark is beneficial to the subsequent process.
  • the generating the identification sequences of the plurality of second pole pieces according to the delivery order includes: The identifier and the second identifier in the second stack list are popped alternately, wherein the identifiers in the same stack list are popped based on the order of storing first and popping first; according to the first identifier and the The popping order of the second token is alternately popped out, and the popped first token and the second token are stored in a third stack list, and the sequence in the third stack list is the token sequence.
  • the stacking method is applied to a stacking machine, and the stacking machine includes a first image acquisition device, and according to the identification sequence, captures each of the plurality of second pole pieces The first image data of a second pole piece, including: when transmitting the second pole piece, sequentially popping the identification sequences in the third stack list; triggering the identification sequence after popping the stack. the first image acquisition device, so that the image acquisition device acquires the first image data.
  • the first identification and the second identification are alternately stored in the third stack list according to the transmission order of the second pole piece, that is, the identification sequence in the third stack list corresponds to the transmission order.
  • the first image acquisition device is triggered to collect the first image data of the second pole piece by the identification sequence after being unstacked, the collected first image data also corresponds to the transmission order of the second pole piece, which is convenient for subsequent process processing .
  • the first image acquisition device is triggered to acquire the first image data through the identification sequence, so that the first image data has a strong correlation with the identification sequence, so that if the battery cell is abnormal, the first image data and its The associated identification sequence can determine which pole piece is abnormal in a short period of time.
  • the first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device, and the first image acquisition device is triggered by the pop-up identification sequence
  • Enabling the image acquisition device to acquire the first image data includes: triggering the first sub-image acquisition device to acquire the first image data if the pop-up identifier is the first identifier in the identifier sequence; If the pop-up identifier is the second identifier in the identifier sequence, trigger the second sub-image acquiring device to acquire the first image data.
  • the acquiring the crease information of the first pole piece includes: detecting the cut hole on the first pole piece; after detecting the cut hole on the first pole piece, triggering the second image
  • the obtaining device collects second image data of the first pole piece, and the second image data is used to obtain the crease information.
  • the above technical solution triggers the second image acquisition device to collect the image data of the first pole piece by detecting the cut hole on the first pole piece. Since the cut hole is relatively easy to detect, it can avoid causing the second image to be damaged due to false detection.
  • the acquisition device can effectively collect the image data of the first pole piece, or can avoid the problem that the second image acquisition device misses collecting the image data of the first pole piece due to false detection.
  • the method further includes: when the at least one crease reaches the delivery position of the plurality of second pole pieces, alternately delivering the at least one upper pole piece according to the delivery order and the at least one lower pole piece.
  • the first pole piece is a negative pole piece
  • the second pole piece is a positive pole piece
  • the upper pole piece is an upper positive pole piece
  • the lower pole piece is a lower positive pole piece. piece.
  • the first pole piece is set as the negative pole piece and the second pole piece is set as the positive pole piece, which can meet the production requirements of the process and facilitate lamination of the first pole piece and the second pole piece.
  • a pole piece stacking device including: a processing unit, configured to determine the transmission sequence for transmitting a plurality of second pole pieces according to a first pole piece, and the first pole piece is a continuous pole piece
  • the plurality of second pole pieces includes at least one upper pole piece and at least one lower pole piece, the plurality of second pole pieces are non-continuous pole pieces, and the transmission sequence is used for the at least one upper pole piece
  • the pole piece and the at least one lower pole piece are alternately transmitted
  • the generation unit is used to generate the identification sequence of the plurality of second pole pieces according to the transmission order
  • the acquisition unit is used to perform the identification sequence according to the transmission order
  • the first image data of each second pole piece in the plurality of second pole pieces is collected according to the identification sequence.
  • the processing unit is further configured to: store the identification sequence and the first image data, where the identification sequence corresponds to the first image data one by one.
  • the processing unit is specifically configured to: acquire crease information of the first pole piece, where the crease information is used to indicate that at least one crease on the first pole piece is located at the first The upper surface or the lower surface of the pole piece; according to the crease information, the transmission sequence is determined.
  • the crease information is used to indicate that the first crease of the at least one crease is located on the upper surface of the first pole piece, among the plurality of second pole pieces
  • the first transmission is the first upper pole piece of the at least one upper pole piece; if the crease information is used to indicate that the first crease of the at least one crease is located on the first pole
  • the lower surface of the sheet, the first of the plurality of second pole pieces to be conveyed is the first lower pole piece of the at least one lower pole piece to be conveyed.
  • the generating unit is further configured to: generate the at least one upper pole piece and the at least one lower pole piece when cutting the continuous second pole piece into the at least one upper pole piece and the at least one lower pole piece The first identification of the pole piece and the second identification of the at least one lower pole piece; the processing unit is also used to: store the first identification in the first stack list, and store the second identification in the in the second stack list.
  • the processing unit is further configured to: according to the transmission order, perform the first identifier in the first stack list and the second identifier in the second stack list Alternately popping out the stack, wherein, the identifiers in the same stack list are popped out based on the order of storing first and popping out the stack first; according to the stacking sequence in which the first logo and the second logo are alternately popped out of the stack, the stacked The first identifier and the second identifier are stored in a third stack list, and the sequence in the third stack list is the identifier sequence.
  • the stacking device includes a first image acquisition device
  • the processing unit is further configured to: when transferring the second pole piece, sequentially check the identification sequence in the third stack list Popping out the stack; triggering the first image acquisition device through the popped-out identification sequence, so that the image acquisition device captures the first image data.
  • the first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device
  • the processing unit is specifically configured to: if the pop-up identifier is an identifier in the identifier sequence The first identification, triggering the first sub-image acquisition device to acquire the first image data; if the pop-up identification is the second identification in the identification sequence, triggering the second sub-image acquisition device to acquire the first image data - image data.
  • the processing unit is specifically configured to: detect the cut hole on the first pole piece; after detecting the cut hole on the first pole piece, trigger the second image acquisition device to capture the first Second image data of a pole piece, where the second image data is used to obtain the crease information.
  • it further includes: a conveying unit, configured to alternately convey the at least one upper pole piece according to the conveying sequence when the at least one crease reaches the conveying position of the plurality of second pole pieces. pole piece and said at least one lower pole piece.
  • the first pole piece is a negative pole piece
  • the second pole piece is a positive pole piece
  • the upper pole piece is an upper positive pole piece
  • the lower pole piece is a lower positive pole piece. piece.
  • a stacking machine including: the pole piece stacking device in the second aspect.
  • Fig. 1 is a schematic flowchart of a pole piece lamination method according to an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a negative electrode sheet cutting and feeding station according to an embodiment of the present application.
  • Fig. 3 is a schematic diagram of determining a transmission order according to crease information according to an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a cutting and feeding station for the positive pole piece according to the embodiment of the present application.
  • Fig. 5 is a schematic diagram of the feeding of the stacker according to the embodiment of the present application.
  • Fig. 6 is a schematic diagram of a first stack list and a second stack list according to an embodiment of the present application.
  • Fig. 7 is a schematic diagram of a third stack list according to the embodiment of the present application.
  • Fig. 8 is a schematic diagram of collecting first image data according to an embodiment of the present application.
  • Fig. 9 is a possible schematic flowchart of steps 120 and 130 in the method 100 of the embodiment of the present application.
  • Fig. 10 is a schematic block diagram of a pole piece stacking device according to an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of a pole piece stacking device according to an embodiment of the present application.
  • Multiple appearing in this application refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two groups), and “multi-piece” refers to more than two (including two pieces), multi-column refers to more than two columns (including two columns).
  • a battery refers to a physical module that includes one or more battery cells to provide electrical power.
  • the batteries mentioned in this application may include battery modules or battery packs.
  • Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in this embodiment of the present application.
  • a battery cell may also be referred to as a battery cell.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive pole piece, a negative pole piece and a diaphragm.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the material of the isolation film may be polypropylene (polypropylene, PP) or polyethylene (polyethylene, PE).
  • the production methods of battery cells mainly include winding type and laminated type.
  • the winding type is to make the positive pole piece and the negative pole piece into continuous long pieces, separated by a separator in the middle, and then made into a battery cell by winding.
  • the battery formed by the battery cell has the problem of stress concentration at the place where the pole piece is bent, and the long-term accumulation of expansion and contraction of the pole piece caused by charging and discharging may cause deformation of the pole piece and affect the performance of the battery.
  • the laminated type is mainly to cut the positive pole piece and the negative pole piece into single pieces respectively, and the diaphragm is stacked in a Z shape, and the positive pole piece and the negative pole piece are stacked alternately in turn, separated by a diaphragm in the middle.
  • the battery formed in this way has the advantages of small internal resistance, low cycle performance, and high-rate charge and discharge, and is suitable as a power source, so it has received more and more attention.
  • the embodiment of the present application proposes a method for stacking pole pieces, which can effectively reduce the scrap rate of battery cells.
  • Fig. 1 shows a schematic flowchart of a method 100 for stacking pole pieces according to an embodiment of the present application.
  • the method 100 can be applied to a lamination machine.
  • the method 100 may include at least some of the following.
  • the first pole piece determines a transmission sequence for transmitting a plurality of second pole pieces.
  • the first pole piece is a continuous pole piece
  • the plurality of second pole pieces include at least one upper pole piece and at least one lower pole piece
  • the plurality of second pole pieces are non-continuous pole pieces
  • the transmission sequence is used for at least An upper pole piece and at least one lower pole piece are conveyed alternately.
  • the identification sequence of the second pole piece is generated according to the transmission order of the second pole piece, and during the process of transmitting the second pole piece according to the transmission order, according to the identification sequence of the second pole piece, each The image data of the second pole piece, so that the collected image data of each second pole piece corresponds to its own identification sequence.
  • the identification sequence of the second pole piece is generated according to the transmission order of the second pole piece, and during the process of transmitting the second pole piece according to the transmission order, according to the identification sequence of the second pole piece, each The image data of the second pole piece, so that the collected image data of each second pole piece corresponds to its own identification sequence.
  • the first pole piece is a continuous pole piece. Compared with firstly cutting the pole piece into sheets and then laminating, the first pole piece in the embodiment of the present application does not need to be cut, which effectively improves the efficiency of subsequent laminations. efficiency. And because the first pole piece is a continuous pole piece, the positional relationship between the first pole piece and the second pole piece can be better controlled when the first pole piece and the second pole piece are laminated, which is beneficial to Improve the accuracy between the first pole piece and the second pole piece. In addition, due to the improved precision, the positional relationship between the first pole piece and the second pole piece can reach the limit, and the energy density of pole pieces with the same area is higher, thereby increasing the energy density of the battery.
  • the first image data may include, but not limited to, the relative position of each second pole piece to the first pole piece, the current station of each second pole piece, and the like.
  • the first pole piece may be a negative pole piece
  • the second pole piece may be a positive pole piece
  • the upper pole piece may be an upper positive pole piece
  • the lower pole piece may be a lower positive pole piece
  • Setting the first pole piece as a negative pole piece and setting the second pole piece as a positive pole piece can meet the production requirements of the process and facilitate lamination of the first pole piece and the second pole piece.
  • a positive pole piece can also be called a cathode pole piece
  • a negative pole piece can also be called an anode pole piece.
  • 110 may specifically include: acquiring crease information on the negative electrode sheet, and determining a delivery sequence of the plurality of positive electrode sheets according to the crease information.
  • the crease information is used to indicate whether at least one crease on the negative electrode sheet is located on the upper surface or the lower surface of the negative electrode sheet.
  • the multiple cut holes may form creases.
  • the shape of the cut hole can be circular, rectangular or the like.
  • the cut holes can be through holes.
  • the through holes can be holes opened on the pole piece by a laser cutting head or a cutter, which are sequentially arranged at intervals along the width direction of the negative pole piece and penetrate through the negative pole piece along its thickness direction.
  • a crease may be a formed region on the negative electrode sheet whose thickness is smaller than other locations.
  • some areas of the negative electrode sheet can be thinned, and the thinned area can form creases on the negative electrode sheet.
  • acquiring the crease information of the negative electrode sheet may specifically include: detecting the cut hole on the negative electrode sheet, and triggering the second image acquisition device to capture the second image of the negative electrode sheet after detecting the cut hole on the negative electrode sheet data, the second image data is used to obtain crease information.
  • the cut hole detection sensor 202 in the work station 20 can detect the cut hole on the negative pole piece 201 . If a hole is detected, the hole-cut detection sensor 202 may send a detection signal to a programmable logic controller (programmable logic controller, PLC) control system. After receiving the detection signal, the PLC control system triggers the second image acquisition device 203 in the station 20 to collect the second image data, for example, triggers the second image acquisition device 203 to take a photo.
  • PLC programmable logic controller
  • the hole cutting detection sensor 202 may be, for example, an optical fiber sensor
  • the second image acquisition device 203 may be, for example, a charge-coupled device (CCD) for photographing.
  • CCD charge-coupled device
  • the second image acquisition device is triggered to collect the image data of the negative electrode sheet by detecting the cut hole on the negative electrode sheet. Since the cut hole is relatively easy to detect, it can avoid causing the second image acquisition device to fail due to false detection. The problem of invalidly collecting the image data of the negative electrode sheet, or the problem of the second image acquisition device missing to collect the image data of the negative electrode sheet due to false detection can be avoided.
  • the station 20 shown in FIG. 2 also includes an oven 204 , a pressing roller 205 and a negative electrode sheet cutting knife 206 .
  • the oven 204 is arranged upstream of the negative electrode sheet 201 conveying direction of the pressure roller 205 and arranged on both sides of the separator for heating the adhesive on the upper surface and the lower surface of the separator.
  • the pressing roller 205 is used to press the separator and the negative electrode sheet 201 together.
  • the viscosity of the binder is enhanced, which is beneficial to the recombination of the separator and the negative electrode sheet 201 .
  • the adhesive on the surface of the separator on the side away from the negative electrode sheet can also ensure the recombination of the positive electrode sheet and the separator.
  • the negative electrode sheet cutting knife 205 is disposed downstream of the pressing roller 204 in the conveying direction of the negative electrode sheet 201 .
  • the hole-cutting detection sensor 201 may also be used to determine the position of the negative electrode tail piece. When the hole detection sensor 201 locks the crease on the negative tail piece and reaches the negative electrode cutting position, the negative pole piece cutter 205 can cut off the crease, thereby completing the separation of the battery cells.
  • the method 100 can also Including: Storing crease information.
  • crease information can be stored in a stack list, or alternatively, crease information can be stored in the cloud.
  • the crease information is used to indicate that the first crease in at least one crease is located on the upper surface of the negative electrode sheet
  • the first of the plurality of positive electrode sheets What is conveyed is the upper positive pole piece, that is, the first upper positive pole piece among the at least one upper positive pole piece.
  • the lower positive pole piece is delivered, that is, the first lower positive pole piece of the at least one lower positive pole piece.
  • the second upper positive pole piece, the second lower positive pole piece, the third upper positive pole piece... are alternately conveyed.
  • the first transmission of the plurality of positive electrode sheets is the lower positive electrode sheet, that is, at least one lower positive electrode sheet
  • the first lower positive pole piece in.
  • the upper positive pole piece is conveyed, that is, the first upper positive pole piece of the at least one upper positive pole piece.
  • the second upper positive pole piece, the third lower positive pole piece etc.
  • the above technical solution determines the transfer sequence of the upper positive electrode sheet and the lower positive electrode sheet in the positive electrode sheet according to the creases in the negative electrode sheet.
  • the implementation is simple, and the transfer sequence of the positive electrode sheet can be determined intuitively.
  • the first positive pole piece to be transmitted is the upper positive pole piece
  • the first positive pole piece to be transmitted is the lower positive pole piece, so the positive pole
  • the pole piece can cover the creases on the negative pole piece, so as to meet the process production requirements.
  • the embodiment of the present application also needs to cut the positive pole pieces.
  • FIG. 4 shows a schematic diagram of a cutting station 40 for the positive electrode sheet.
  • 401a is the upper positive pole piece
  • 401b is the lower positive pole piece
  • the positive pole piece cutting knife 402a is used to cut the continuous upper positive pole piece 401a to cut at least one upper positive pole piece
  • the cutting knife 402b is used for cutting the continuous lower positive pole piece 401b to be cut into at least one lower positive pole piece.
  • the widths of at least one upper positive pole piece and at least one lower positive pole piece after cutting are the same.
  • the station 40 may include a third image acquisition device 403 in addition to the positive pole piece cutting knives 402 a and 402 b , and the upper positive pole piece 401 a and the lower positive pole piece 401 b .
  • the negative pole piece can enter the 40 station, and trigger the third image acquisition device 403 to collect image data, so as to obtain the crease position of the crease on the negative pole piece.
  • the third image acquisition device 403 may feed back the acquired crease position to the PLC control system.
  • the method 100 may further include: generating a first mark of at least one upper positive pole piece and a first mark of at least one lower positive pole piece Second logo.
  • the first identifier and the second identifier are different.
  • the first identifier may be "1***”, such as "1033".
  • the second identifier may be "5***”, such as "5024”.
  • the first identifier may be "A***”
  • the second identifier may be "B***”.
  • the obtained at least one upper positive pole piece and at least one lower positive pole piece can be sent to the next station in sequence.
  • the PLC control system can trigger the fourth image acquisition device to take pictures based on the at least one upper positive pole piece and at least one lower positive pole piece, and at the same time, the current The pole piece mark at the moment is the first mark or the second mark.
  • the rules for conveying the upper positive pole piece and the lower positive pole piece can be preset in advance.
  • a rule may include whether the upper positive pole piece is conveyed first or the lower positive pole piece is conveyed first.
  • the rule may include conveying in the order of upper positive pole piece, lower positive pole piece, upper positive pole piece, lower positive pole piece..., or, according to the order of upper positive pole piece, upper positive pole piece, lower positive pole piece , the lower positive pole piece, the upper positive pole piece, the upper positive pole piece... the order is transmitted.
  • the PLC control system can trigger the fourth image acquisition device to take pictures, and determine whether the pole piece at the current moment is the upper positive pole piece or the lower positive pole piece according to the rules. If it is the upper positive pole piece, then generate the first mark; if it is the lower positive pole piece, then generate the second mark.
  • the fourth image acquisition device may include a fourth image acquisition device 50a and a fourth image acquisition device 50b.
  • the PLC control system can trigger the fourth image acquisition device 50a to take a picture, and mark the upper positive pole piece at the current moment as the first mark.
  • the PLC control system can trigger the fourth image acquisition device 50b to take a picture, and mark the lower positive pole piece at the current moment as the second mark.
  • 20 and 40 in FIG. 5 may be the above-mentioned station 20 and station 40 respectively.
  • the first identifier and the second identifier may be stored together.
  • the first identification and the second identification are alternately stored together according to the transmission sequence of the second pole piece.
  • the first identifier and the second identifier are stored together, there may be a problem of confusion between the first identifier and the second identifier. Therefore, as another example, the first identifier may be stored in the first stack list, while the second identifier may be stored in the second stack list.
  • 601 is the first stack list
  • 602 is the second stack list
  • the identifiers stored in the first stack list 601 are all first identifiers
  • the identifiers stored in the second stack list 602 are all second identifiers.
  • first identifier and the second identifier may be stored in other places besides the first stack list and the second stack list, which is not specifically limited in this embodiment of the present application.
  • the first identification of the upper positive electrode piece and the second identification of the lower positive electrode piece are stored in different stack lists, which can effectively prevent confusion between the first identification and the second identification. For example, mistaking the first mark for the second mark and mistaking the second mark for the first mark is beneficial to the subsequent process.
  • At least one upper positive pole piece and at least one lower positive pole piece may be alternately delivered according to the delivery order.
  • the delivery timing of the upper positive electrode piece and the lower positive electrode piece can be determined by the crease position acquired by the third image acquisition device 403 in the station 40 . Specifically, when at least one crease on the negative pole piece reaches the delivery position of the second pole piece, at least one upper positive pole piece and at least one lower positive pole piece are alternately delivered according to the delivery sequence.
  • the first identification in the first stack list and the second identification in the second stack list can be popped alternately according to the transmission order, and according to the first identification and the second A popping sequence for alternate popping is identified, and the popped first identifier and second identifier are stored in a third stack list.
  • the identifiers in the same stack list are popped based on the order of storing first and popping first.
  • the sequence in the third stack list is the identification sequence of the positive pole piece.
  • the first one to be transmitted is the upper positive pole piece
  • at least one first identification in the first stack list is popped out of the stack
  • at least one second identification in the second stack list is popped out.
  • One is stacked, and then at least one first identifier in the first stack list is popped out of the stack one by one, so that the stack is alternately popped out.
  • the first one to be transmitted is the lower positive pole piece
  • at least one second identification in the second stack list is popped out of the stack
  • at least one first identification in the first stack list is popped out of the stack by one
  • at least one second identifier in the second stack list is popped out of the stack one by one, so that the stack is alternately popped out.
  • the positive pole piece delivered first is the upper positive pole piece
  • the upper positive pole piece is the pole piece corresponding to the first mark “1001”.
  • step 130 may specifically include: when transmitting the positive electrode sheet, sequentially pop the identification sequence in the third stack list, and pass the pop-out The identification sequence triggers the first image acquisition device so that the image acquisition device acquires first image data.
  • the first image data of each second pole piece is sequentially collected.
  • the first identification and the second identification are alternately stored in the third stack list according to the transmission order of the positive pole pieces, that is, the identification sequence in the third stack list corresponds to the transmission order.
  • the first image acquisition device is triggered to capture the first image data of the positive pole pieces through the identification sequence after being unstacked, the collected first image data also corresponds to the transmission order of the positive pole pieces, which is convenient for subsequent processing.
  • the first image acquisition device is triggered to acquire the first image data through the identification sequence, so that the first image data has a strong correlation with the identification sequence, so that if the battery cell is abnormal, the first image data and its The associated identification sequence can determine which pole piece is abnormal in a short period of time.
  • the image acquisition device may include a first sub-image acquisition device and a second sub-image acquisition device. If the sign out of the stack is the first sign in the sign sequence, then trigger the first sub-image acquisition device to collect the first image data; if the sign out of the stack is the second sign in the sign sequence, then trigger the second sub-image acquisition device Acquire first image data.
  • the first sub-image acquiring device and the second sub-image acquiring device may be but not limited to cameras.
  • the method 100 may further include: storing the identification sequence and the first image data.
  • the identification sequence and the first image data there is a one-to-one correspondence between the identification sequence and the first image data.
  • the first sub-image acquisition device and the second sub-image acquisition device acquire the first image data, they can send the first image data and the identification sequence to the stack host system, and the stack host system will send the first image data and the identification sequence
  • the sequences are summarized into corresponding databases to store the identification sequences and the first image data.
  • a station 80 is shown in FIG. 8 .
  • the station 80 may be the station 80 in FIG. 5 .
  • Station 80 includes the first sub-image acquisition device 803a, the second sub-image acquisition device 803b, 804a and 804b are the upper diaphragm and the lower diaphragm respectively, 801 is the upper positive pole piece, and 802 is the lower positive pole piece.
  • the sign popped out of the stack at the position of the first sub-image acquiring device 803a is the first sign, such as "1001"
  • the first sub-image acquiring device 803a triggers the first sub-image acquiring device 803a to take a picture, and do not take a picture under other circumstances
  • the flag popped out of the stack at position 803b is the second flag, such as "5001”
  • the second sub-image acquisition device 803b is triggered to take a picture, and it does not take a picture in other cases.
  • the first image data acquired by photographing and the current moment identifier are stored.
  • the identification sequence and first image data of the positive pole pieces are stored, so that the first image data of each positive pole piece can be traced and queried.
  • the pole piece in which the abnormality occurs can be determined directly according to the stored identification sequence and the first image data, which is not only simple to implement, but also effectively reduces the processing time.
  • the composite negative electrode sheet, separator, and positive electrode sheet are laminated. Laminations are performed, for example, at station 90 shown in FIG. 5 .
  • S901a cutting the upper positive pole piece at 40 stations.
  • S901b cutting the lower positive pole piece at 40 stations.
  • S902a Generate a first stack list 601, wherein the first stack list 601 includes a first identification of the upper positive pole piece.
  • S902b Generate a second stack list 602, wherein the second stack list 602 includes a second identification of the lower positive pole piece.
  • S903 Trigger the first identifier in the first stack list 601 and the second identifier in the second stack list 602 to be popped according to the transfer order of the positive pole pieces.
  • S904 Generate a third stack list 701 from the flags popped from the first stack list 601 and the second stack list 602 according to the transfer sequence.
  • S905 The station 80 triggers the flags in the third stack list 701 to be popped.
  • S906 Trigger a corresponding camera to take a picture according to the flag popped out of the third stack list 701.
  • S907 Send the pop-up identifier in the third stack list 701 to the CCD.
  • S908 Determine whether the identifier popped out of the stack is the first identifier or the second identifier.
  • S910 Determine whether the identifier popped out of the stack is the first identifier.
  • S911 Trigger the camera corresponding to the lower positive pole piece to take pictures, and store the first image data.
  • S912 Trigger the camera corresponding to the upper positive pole piece to take pictures, and store the first image data.
  • Fig. 10 shows a schematic block diagram of a pole piece stacking device 1000 according to an embodiment of the present application.
  • the stacking device 1000 can implement the pole piece stacking method 100 of the above-mentioned embodiment of the present application.
  • the laminated device 1000 may include:
  • the processing unit 1010 is configured to determine the transmission sequence for transmitting a plurality of second pole pieces according to the first pole piece, the first pole piece is a continuous pole piece, and the multiple second pole pieces include at least one upper pole piece and at least one lower pole piece, the plurality of second pole pieces are discontinuous pole pieces, and the delivery sequence is used to alternately deliver the at least one upper pole piece and the at least one lower pole piece.
  • the generating unit 1020 is configured to generate the identification sequence of the plurality of second pole pieces according to the transmission sequence.
  • the acquisition unit 1030 is configured to collect the information of each second pole piece in the plurality of second pole pieces according to the identification sequence during the process of transmitting the plurality of second pole pieces according to the transmission sequence. first image data.
  • the processing unit 1010 is further configured to: store the identification sequence and the first image data, wherein the identification sequence and the first image data correspond one-to-one .
  • the processing unit 1010 is specifically configured to: acquire crease information of the first pole piece, the crease information is used to indicate at least one crease on the first pole piece Whether it is located on the upper surface or the lower surface of the first pole piece; according to the crease information, the delivery sequence is determined.
  • the crease information is used to indicate that the first crease of the at least one crease is located on the upper surface of the first pole piece
  • the plurality of first The first transmission among the two pole pieces is the first upper pole piece among the at least one upper pole piece; if the crease information is used to indicate that the first crease of the at least one crease is located at the The lower surface of the first pole piece, the first conveying of the plurality of second pole pieces is the conveying of the first lower pole piece of the at least one lower pole piece.
  • the generating unit 1020 is further configured to: when cutting the continuous second pole piece into the at least one upper pole piece and the at least one lower pole piece, generate A first identification of the at least one upper pole piece and a second identification of the at least one lower pole piece.
  • the processing unit 1010 is further configured to: store the first identifier in a first stack list, and simultaneously store the second identifier in a second stack list.
  • the processing unit 1010 is further configured to: according to the transfer sequence, perform the first identification in the first stack list and the identification in the second stack list
  • the second logo is alternately popped out, wherein, the logos in the same stack list are popped out based on the order of storing first and popping out the stack first; according to the stacking order of alternately popping out the first logo and the second logo and storing the popped first identifier and the second identifier in a third stack list, where the sequence in the third stack list is the identifier sequence.
  • the stacking device 1000 includes a first image acquisition device, and the processing unit 1010 is further configured to: sequentially process the third pole piece when transferring the second pole piece.
  • the identification sequence in the stack list is popped; the first image acquisition device is triggered by the popped identification sequence, so that the image acquisition device acquires the first image data.
  • the first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device
  • the processing unit 1010 is specifically configured to: if the pop-up identifier is the the first identifier in the identifier sequence, triggering the first sub-image acquisition device to acquire the first image data; if the pop-up identifier is the second identifier in the identifier sequence, triggering the acquisition of the second sub-image
  • the device collects the first image data.
  • the processing unit 1010 is specifically configured to: detect the cut hole on the first pole piece; after detecting the cut hole on the first pole piece, trigger the second image acquisition
  • the device collects second image data of the first pole piece, and the second image data is used to obtain the crease information.
  • it further includes: a conveying unit, configured to alternately convey the plurality of second pole pieces according to the conveying order when the at least one crease reaches the conveying position The at least one upper pole piece and the at least one lower pole piece.
  • a conveying unit configured to alternately convey the plurality of second pole pieces according to the conveying order when the at least one crease reaches the conveying position The at least one upper pole piece and the at least one lower pole piece.
  • the first pole piece is a negative pole piece
  • the second pole piece is a positive pole piece
  • the upper pole piece is an upper positive pole piece
  • the lower pole piece For the lower positive pole piece.
  • the lamination device 1000 can implement the corresponding operations in the method 100, and for the sake of brevity, details are not repeated here.
  • the lamination device 1000 can achieve the same technical effect as the aforementioned method 100, and for the sake of brevity, no further description is given here.
  • FIG. 11 is a schematic diagram of the hardware structure of a pole piece stacking device 1100 according to an embodiment of the present application.
  • the stacking device 1100 includes a memory 1101 , a processor 1102 , a communication interface 1103 and a bus 1104 .
  • the memory 1101 , the processor 1102 , and the communication interface 1103 are connected to each other through a bus 1104 .
  • the memory 1101 may be a read-only memory (read-only memory, ROM), a static storage device and a random access memory (random access memory, RAM).
  • the memory 1101 can store programs, and when the programs stored in the memory 1101 are executed by the processor 1102, the processor 1102 and the communication interface 1103 are used to execute each step of the pole piece lamination method in the embodiment of the present application.
  • the processor 1102 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application specific integrated circuit (application specific integrated circuit, ASIC), a graphics processing unit (graphics processing unit, GPU) or one or more
  • the integrated circuit is used to execute related programs to realize the functions required by the units in the device of the embodiment of the present application, or to execute the lamination method of the pole piece in the embodiment of the present application.
  • the processor 1102 may also be an integrated circuit chip with signal processing capabilities. During implementation, each step of the method for stacking pole pieces in the embodiment of the present application may be completed by an integrated logic circuit of hardware in the processor 1102 or instructions in the form of software.
  • processor 1102 can also be general purpose processor, digital signal processor (digital signal processing, DSP), ASIC, off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory 1101, and the processor 1102 reads the information in the memory 1101, and combines its hardware to complete the functions required to be performed by the units included in the stacking device 1100 of the embodiment of the application, or execute the pole piece of the embodiment of the application lamination method.
  • the communication interface 1103 implements communication between the lamination device 1100 and other devices or communication networks by using a transceiver device such as but not limited to a transceiver.
  • the bus 1104 may include a pathway for transferring information between various components of the device 1100 (eg, memory 1101 , processor 1102 , communication interface 1103 ).
  • the above-mentioned laminated device 1100 only shows memory, processor, and communication interface, in the specific implementation process, those skilled in the art should understand that the BMS 600 may also include other devices necessary for normal operation. Meanwhile, according to specific needs, those skilled in the art should understand that the stacking device 1100 may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the lamination device 1100 may only include the devices necessary to realize the embodiment of the present application, and does not necessarily include all the devices shown in FIG. 11 .
  • the embodiment of the present application also provides a stacking machine, which may include the pole piece stacking device shown in FIG. 10 or FIG. 11 .

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Abstract

提供了一种极片的叠片方法、装置和叠片机，能够有效降低电池单体的报废率。包括：根据第一极片，确定传送多个第二极片的传送顺序，第一极片为连续的极片，多个第二极片包括至少一个上极片和至少一个下极片，多个第二极片为非连续的极片，传送顺序用于对至少一个上极片和至少一个下极片进行交替传送；根据传送顺序，生成多个第二极片的标识序列；在根据传送顺序对多个第二极片进行传送的过程中，根据标识序列，采集多个第二极片中每个第二极片的第一图像数据。

Description

极片的叠片方法、装置和叠片机 技术领域
本申请涉及动力电池领域，特别是涉及一种极片的叠片方法、装置和叠片机。
背景技术
节能减排是汽车产业可持续发展的关键。在这种情况下，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。而对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
动力电池的核心制造工艺之一为叠片工艺，在叠片工艺的生产过程中，一般由下至上依次叠放负极片、隔膜、正极片、隔膜、负极片……，或者，由下至上依次叠放正极片、隔膜、负极片、隔膜、正极片……。在叠片完成并组成电池单体之后，若后续电池单体出现异常情况，由于无法确定是哪个极片出现问题，因此，可能需要将整个电池单体进行更换，造成了电池单体的报废率较高的问题。
发明内容
本申请实施例提供一种极片的叠片方法、装置和叠片机，能够有效降低电池单体的报废率。
第一方面，提供了一种极片的叠片方法，所述方法包括：根据第一极片，确定传送多个第二极片的传送顺序，所述第一极片为连续的极片，所述多个第二极片包括至少一个上极片和至少一个下极片，所述多个第二极片为非连续的极片，所述传送顺序用于对所述至少一个上极片和所述至少一个下极片进行交替传送；根据所述传送顺序，生成所述多个第二极片的标识序列；在根据所述传送顺序对所述多个第二极片进行传送的过程中，根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据。
本申请实施例，根据第二极片的传送顺序生成第二极片的标识序列，并在根据传送顺序对第二极片进行传送的过程中，根据第二极片的标识序列，采集每个第二极片的图像数据，使得采集的每个第二极片的图像数据与其自身的标识序列对应。这样，若电池单体出现异常情况，则可以根据采集的图像数据以及对应的第二极片的标识序列，确定具体是哪个极片出现了异常情况，进而可针对出现异常情况的极片进行处理而不用更换整个电池单体，极大地降低了电池单体的报废率。
进一步地，第一极片为连续的极片，相对于先将极片裁切为片料再进行叠片，本申请实施例的第一极片无需裁切，有效地提高了后续叠片的效率。并且由于第一极片为连续的极片，这样在对第一极片和第二极片进行叠片时能够更好地控制第一极片 和第二极片之间的位置关系，有利于提高第一极片和第二极片之间的精度。此外，由于精度提高了，使得第一极片和第二极片之间的位置关系可以做到极限，相同面积的极片的能量密度更高，从而提高了电池的能量密度。
在一些可能的实现方式中，所述方法还包括：存储所述标识序列和所述第一图像数据，其中，所述标识序列和所述第一图像数据一一对应。
上述技术方案，将第二极片的标识序列和第一图像数据进行存储，使得对每个第二极片的第一图像数据都能进行追溯和查询。这样，在电池单体出现异常的情况下，能够直接根据存储的标识序列和第一图像数据确定具体出现异常情况的极片，不仅实现简单，而且有效减小了处理时间。
在一些可能的实现方式中，所述根据第一极片，确定传送多个第二极片的传送顺序，包括：获取第一极片的折痕信息，所述折痕信息用于指示所述第一极片上的至少一个折痕位于所述第一极片的上表面还是下表面；根据所述折痕信息，确定所述传送顺序。
上述技术方案，根据第一极片中的折痕确定第二极片中上极片和下极片的传送顺序，一方面，实现简单，能够很直观地确定第二极片的传送顺序。另一方面，第二极片上具有多个折痕，方便后续折叠。
在一些可能的实现方式中，若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的上表面，所述多个第二极片中第一个传送的为所述至少一个上极片中的第一个上极片；若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的下表面，所述多个第二极片中第一个传送的为传送所述至少一个下极片中的第一个下极片。
上述技术方案，当折痕位于第一极片的上表面时首先传送的第二极片为上极片，当折痕位于第一极片的下表面时首先传送的第二极片为下极片，如此第二极片能够覆盖第一极片上的折痕，从而满足工艺生产要求。
在一些可能的实现方式中，所述方法还包括：在将连续的第二极片裁切为所述至少一个上极片和所述至少一个下极片时，生成所述至少一个上极片的第一标识和所述至少一个下极片的第二标识；将所述第一标识存储在第一堆栈列表中，同时将所述第二标识存储在第二堆栈列表中。
上述技术方案，将上极片的第一标识和下极片的第二标识存储在不同的堆栈列表中，防止了第一标识和第二标识之间发生混乱的问题，比如，将第一标识误认为第二标识，将第二标识误认为第一标识，有利于后续工艺的进行。
在一些可能的实现方式中，所述根据所述传送顺序，生成所述多个第二极片的标识序列，包括：根据所述传送顺序，对所述第一堆栈列表中的所述第一标识和所述第二堆栈列表中的所述第二标识进行交替出栈，其中，同一个堆栈列表中的标识基于先存储先出栈的顺序进行出栈；按照所述第一标识和所述第二标识交替出栈的出栈顺序，将出栈后的所述第一标识和所述第二标识存储在第三堆栈列表中，所述第三堆栈列表中的序列为所述标识序列。
在一些可能的实现方式中，所述叠片方法应用于叠片机，所述叠片机包括第一 图像获取装置，所述根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据，包括：在传送所述第二极片时，依次对所述第三堆栈列表中的标识序列进行出栈；通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据。
上述技术方案，由于是根据第二极片的传送顺序将第一标识和第二标识交替存储在第三堆栈列表中的，即第三堆栈列表中的标识序列与传送顺序对应。这样，在通过出栈后的标识序列触发第一图像获取装置采集第二极片的第一图像数据时，采集的第一图像数据也是与第二极片的传送顺序对应的，便于后续工艺处理。进一步地，通过标识序列触发第一图像获取装置采集第一图像数据，使得第一图像数据与标识序列具有强相关性，这样，若电池单体出现异常情况，则可以根据第一图像数据以及与其关联的标识序列，在较短的时间内确定具体是哪个极片出现了异常情况。
在一些可能的实现方式中，所述第一图像获取装置包括第一子图像获取装置和第二子图像获取装置，所述通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据，包括：若出栈的标识为所述标识序列中的第一标识，触发所述第一子图像获取装置采集所述第一图像数据；若出栈的标识为所述标识序列中的第二标识，触发所述第二子图像获取装置采集所述第一图像数据。
在一些可能的实现方式中，所述获取第一极片的折痕信息，包括：检测所述第一极片上的切孔；检测到所述第一极片上的切孔后，触发第二图像获取装置采集所述第一极片的第二图像数据，所述第二图像数据用于获取所述折痕信息。
上述技术方案，通过检测第一极片上的切孔触发第二图像获取装置采集第一极片的图像数据，由于切孔相对来说比较容易检测，因此，能够避免由于误检测而使第二图像获取装置无效采集第一极片的图像数据的问题，或者能够避免由于误检测而使第二图像获取装置漏采集第一极片的图像数据的问题。
在一些可能的实现方式中，所述方法还包括：在所述至少一个折痕到达所述多个第二极片的传送位置时，根据所述传送顺序，交替传送所述至少一个上极片和所述至少一个下极片。
上述技术方案，在第一极片上的折痕达到第二极片的传送位置时，交替传送至少一个上极片和至少一个下极片，能够保证第二极片和第一极片之间精确对准，提高了电池单体的精度。
在一些可能的实现方式中，所述第一极片为负极极片，所述第二极片为正极极片，所述上极片为上正极极片，所述下极片为下正极极片。
上述技术方案，将第一极片设置为负极极片且将第二极片设置为正极极片，能够满足工艺生产要求，便于将第一极片和第二极片进行叠片。
第二方面，提供了一种极片的叠片装置，包括：处理单元，用于根据第一极片，确定传送多个第二极片的传送顺序，所述第一极片为连续的极片，所述多个第二极片包括至少一个上极片和至少一个下极片，所述多个第二极片为非连续的极片，所述传送顺序用于对所述至少一个上极片和所述至少一个下极片进行交替传送；生成单元，用于根据所述传送顺序，生成所述多个第二极片的标识序列；采集单元，用于在根据 所述传送顺序对所述多个第二极片进行传送的过程中，根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据。
在一些可能的实现方式中，处理单元还用于：存储所述标识序列和所述第一图像数据，其中，所述标识序列和所述第一图像数据一一对应。
在一些可能的实现方式中，所述处理单元具体用于：获取第一极片的折痕信息，所述折痕信息用于指示所述第一极片上的至少一个折痕位于所述第一极片的上表面还是下表面；根据所述折痕信息，确定所述传送顺序。
在一些可能的实现方式中，若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的上表面，所述多个第二极片中第一个传送的为所述至少一个上极片中的第一个上极片；若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的下表面，所述多个第二极片中第一个传送的为传送所述至少一个下极片中的第一个下极片。
在一些可能的实现方式中，所述生成单元还用于：在将连续的第二极片裁切为所述至少一个上极片和所述至少一个下极片时，生成所述至少一个上极片的第一标识和所述至少一个下极片的第二标识；所述处理单元还用于：将所述第一标识存储在第一堆栈列表中，同时将所述第二标识存储在第二堆栈列表中。
在一些可能的实现方式中，所述处理单元还用于：根据所述传送顺序，对所述第一堆栈列表中的所述第一标识和所述第二堆栈列表中的所述第二标识进行交替出栈，其中，同一个堆栈列表中的标识基于先存储先出栈的顺序进行出栈；按照所述第一标识和所述第二标识交替出栈的出栈顺序，将出栈后的所述第一标识和所述第二标识存储在第三堆栈列表中，所述第三堆栈列表中的序列为所述标识序列。
在一些可能的实现方式中，所述叠片装置包括第一图像获取装置，所述处理单元还用于：在传送所述第二极片时，依次对所述第三堆栈列表中的标识序列进行出栈；通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据。
在一些可能的实现方式中，所述第一图像获取装置包括第一子图像获取装置和第二子图像获取装置，所述处理单元具体用于：若出栈的标识为所述标识序列中的第一标识，触发所述第一子图像获取装置采集所述第一图像数据；若出栈的标识为所述标识序列中的第二标识，触发所述第二子图像获取装置采集所述第一图像数据。
在一些可能的实现方式中，所述处理单元具体用于：检测所述第一极片上的切孔；检测到所述第一极片上的切孔后，触发第二图像获取装置采集所述第一极片的第二图像数据，所述第二图像数据用于获取所述折痕信息。
在一些可能的实现方式中，还包括：传送单元，用于在所述至少一个折痕到达所述多个第二极片的传送位置时，根据所述传送顺序，交替传送所述至少一个上极片和所述至少一个下极片。
在一些可能的实现方式中，所述第一极片为负极极片，所述第二极片为正极极片，所述上极片为上正极极片，所述下极片为下正极极片。
第三方面，提供了一种叠片机，包括：第二方面中的极片的叠片装置。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1是本申请实施例的极片的叠片方法的示意性流程图。
图2是本申请实施例的负极极片裁切送片工位的示意性图。
图3是本申请实施例的根据折痕信息确定传送顺序的示意性图。
图4是本申请实施例的正极极片裁切送片工位的示意性图。
图5是本申请实施例的叠片机送料示意性图。
图6是本申请实施例的第一堆栈列表和第二堆栈列表的示意性图。
图7是本申请实施例的第三堆栈列表的示意性图。
图8是本申请实施例的采集第一图像数据的示意性图。
图9是本申请实施例的方法100中步骤120和130的一种可能的示意性流程图。
图10是本申请实施例的极片的叠片装置的示意性框图。
图11是本申请实施例的极片的叠片装置的示意性框图。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
下述描述中出现的方位词均为图中示出的方向，并不是对本申请的具体结构进行限定。在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：存在A，同时存在A和B，存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
本申请中出现的“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)，多列指的是两列以上(包括两列)。
在使用传统能源作为动力供给的汽车工业环境下，环境污染问题愈发严重，积极发展新能源汽车，能够减少对于环境的危害。对于新能源汽车而言，电池技术是关乎其发展的一项重要因素。
电池是指包括一个或多个电池单体以提供电能的物理模块。例如，本申请所提到的电池可以包括电池模块或电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
可选地，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。在一些实施方式中，电池单体也可称之为电芯。
电池单体包括电极组件和电解液，电极组件由正极极片、负极极片和隔膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的正极集流体凸出于已涂覆正极活性物质层的正极集流体，未涂敷正极活性物质层的正极集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的负极集流体凸出于已涂覆负极活性物质层的负极集流体，未涂敷负极活性物质层的负极集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为聚丙烯(polypropylene，PP)或聚乙烯(polyethylene，PE)等。
目前，电池单体的制作方法主要有卷绕式和叠片式两种。卷绕式是把正极极片和负极极片做成连续的长片型，中间通过隔膜隔开，然后通过卷绕的方式制成电池单体。通过该电池单体形成的电池在极片弯曲的地方存在应力集中的问题，由充放电造成的极片的膨胀和收缩长期累积可能会造成极片的变形，影响电池性能。
叠片式主要是将正极极片和负极极片分别切成单片，隔膜呈Z字叠绕，正极极片和负极极片依次交替叠放，中间由隔膜隔开。这种方式形成的电池具有内阻小、循环性能小、可以大倍率充放电等优点，适合作为动力能源，因而收到越来越多的关注。
但是，在叠片完成并组成电池单体之后，若后续电池单体出现异常情况，比如电池单体中的某个极片坏掉，由于无法确定具体是哪个极片出现问题，因此，可能需要将整个电池单体都进行更换，造成了电池单体的报废率较高的问题。
鉴于此，本申请实施例提出了一种极片的叠片方法，能够有效降低电池单体的报废率。
图1示出了本申请实施例的一种极片的叠片方法100的示意性流程图。可选地，方法100可以应用于叠片机。方法100可以包括以下内容中的至少部分内容。
110：根据第一极片，确定传送多个第二极片的传送顺序。其中，第一极片为连续的极片，多个第二极片包括至少一个上极片和至少一个下极片，多个第二极片为非连续的极片，传送顺序用于对至少一个上极片和至少一个下极片进行交替传送。
120：根据传送顺序，生成多个第二极片的标识序列。
130：在根据传送顺序对多个第二极片进行传送的过程中，根据标识序列，采集多个第二极片中每个第二极片的第一图像数据。
本申请实施例，根据第二极片的传送顺序生成第二极片的标识序列，并在根据传送顺序对第二极片进行传送的过程中，根据第二极片的标识序列，采集每个第二极片的图像数据，使得采集的每个第二极片的图像数据与其自身的标识序列对应。这样，若电池单体出现异常情况，则可以根据采集的图像数据以及对应的第二极片的标识序列，确定具体是哪个极片出现了异常情况，进而可针对出现异常情况的极片进行处理而不用更换整个电池单体，极大地降低了电池单体的报废率。
进一步地，第一极片为连续的极片，相对于先将极片裁切为片料再进行叠片，本申请实施例的第一极片无需裁切，有效地提高了后续叠片的效率。并且由于第一极片为连续的极片，这样在对第一极片和第二极片进行叠片时能够更好地控制第一极片和第二极片之间的位置关系，有利于提高第一极片和第二极片之间的精度。此外，由于精度提高了，使得第一极片和第二极片之间的位置关系可以做到极限，相同面积的极片的能量密度更高，从而提高了电池的能量密度。
可选地，第一图像数据可以包括但不限于每个第二极片与第一极片的相对位置、每个第二极片当前所处的工位等。
可选地，第一极片可以是负极极片，第二极片可以是正极极片，上极片可以是上正极极片，下极片可以是下正极极片。
将第一极片设置为负极极片且将第二极片设置为正极极片，能够满足工艺生产要求，便于将第一极片和第二极片进行叠片。
应理解，本申请实施例对负极极片和正极极片的名称不做具体限定，也就是说，它们也可以称为其他名称。比如，正极极片也可以称为阴极极片，负极极片也可以称为阳极极片。
以下，以第一极片为负极极片，第二极片为正极极片为例描述本申请实施例的 方案，但应理解，本申请实施例并不限于此。
可选地，在一些实施例中，110具体可以包括：获取负极极片上的折痕信息，并根据折痕信息确定多个正极极片的传送顺序。其中，折痕信息用于指示负极极片上的至少一个折痕位于负极极片的上表面还是下表面。
可选地，负极极片上可以具有多个切孔，该多个切孔可形成折痕。切孔的形状可以为圆形、矩形等。切孔可以是贯穿孔，作为示例，贯穿孔可以是通过激光切割头或切刀在极片上开设的孔，沿负极极片的宽度方向依次间隔设置且沿其厚度方向贯穿负极极片。
或者，折痕可以是负极极片上厚度小于其他位置的厚度的所形成的区域。比如，可以对负极极片中的某些区域进行削薄处理，削薄处理后的区域可以形成负极极片上的折痕。
可选地，获取负极极片的折痕信息，具体可以包括：检测负极极片上的切孔，在检测到负极极片上的切孔后，触发第二图像获取装置采集负极极片的第二图像数据，第二图像数据用于获取折痕信息。
例如，如图2所示，在负极极片201通过工位20时，工位20中的切孔检测传感器202可以检测负极极片201上的切孔。若检测到切孔，则切孔检测传感器202可将检测信号发送到可编程逻辑控制器(programmable logic controller，PLC)控制***。PLC控制***接收到检测信号后，触发工位20中的第二图像获取装置203采集第二图像数据，比如触发第二图像获取装置203进行拍照。
其中，切孔检测传感器202例如可以是光纤传感器，第二图像获取装置203例如可以是拍照电荷耦合原件(charge-coupled device，CCD)。
该技术方案，通过检测负极极片上的切孔触发第二图像获取装置采集负极极片的图像数据，由于切孔相对来说比较容易检测，因此，能够避免由于误检测而使第二图像获取装置无效采集负极极片的图像数据的问题，或者能够避免由于误检测而使第二图像获取装置漏采集负极极片的图像数据的问题。
再次参考如图2，除了切孔检测传感器202和第二图像获取装置203之外，图2所示的工位20还包括烘箱204、压辊205和负极极片裁切刀206。
其中，烘箱204设置在压辊205的负极极片201传送方向的上游，且设置在隔膜两侧，用于对隔膜上表面以及下表面上的粘结剂进行加热。压辊205用于将隔膜和负极极片201压在一起。通过对粘结剂进行加热，增强了粘结剂的粘性，有利于隔膜和负极极片201的复合。同时，在后续对正极极片进行叠片时，隔膜背离负极极片的一侧表面的粘合剂也能够确保正极极片和隔膜的复合。
负极极片裁切刀205设置在压辊204的负极极片201传送方向的下游。在本申请实施例中，切孔检测传感器201还可以用于确定负极尾片位置。当切孔检测传感器201锁定负极尾片上的折痕到达负极裁切为后，负极极片裁切刀205可以将折痕切断，从而完成电池单体之间的分离。
进一步地，为了确保在每个电池单体的第一个负极极片在下一个工位出栈后，能够准确判断负极极片上的折痕位于负极极片的上表面还是下表面，方法100还可以包 括：存储折痕信息。
例如，可以将折痕信息存储在堆栈列表中，或者，将折痕信息存储在云端。
在获取到折痕信息后，如图3所示，若折痕信息用于指示至少一个折痕中的第一个折痕位于负极极片的上表面，则多个正极极片中第一个传送的为上正极极片，即至少一个上正极极片中的第一个上正极极片。接下来传送下正极极片，即至少一个下正极极片中的第一个下正极极片。之后，交替传送第二个上正极极片、第二个下正极极片、第三个上正极极片……。
若折痕信息用于指示至少一个折痕中第一个折痕位于负极极片的下表面，则多个正极极片中第一个传送的是下正极极片，即至少一个下正极极片中的第一个下正极极片。接下来传送上正极极片，即至少一个上正极极片中的第一个上正极极片。之后，交替传送第二个下正极极片。第二个上正极极片、第三个下正极极片……。
上述技术方案，根据负极极片中的折痕确定正极极片中上正极极片和下正极极片的传送顺序，一方面，实现简单，能够很直观地确定正极极片的传送顺序。另一方面，负极极片上具有多个折痕，方便后续折叠。
此外，当折痕位于负极极片的上表面时首先传送的正极极片为上正极极片，当折痕位于负极极片的下表面时首先传送的正极极片为下正极极片，如此正极极片能够覆盖负极极片上的折痕，从而满足工艺生产要求。
在根据传送顺序对正极极片进行传送前，由于正极极片不是连续的，因此，本申请实施例还需要对正极极片进行裁切。
图4示出了正极极片裁切工位40示意性图。401a为上正极极片，401b为下正极极片，正极极片裁切刀402a用于对连续的上正极极片401a进行裁切，以裁切为至少一个上正极极片；正极极片裁切刀402b用于对连续的下正极极片401b进行裁切，以裁切为至少一个下正极极片。其中，裁切后的至少一个上正极极片和至少一个下正极极片的宽度均相同。
再次参考图4，工位40除了包括正极极片裁切刀402a和402b，以及上正极极片401a和下正极极片401b之外，还可以包括第三图像获取装置403。在负极极片和隔膜复合之后，负极极片可以进入40工位，并触发第三图像获取装置403采集图像数据，以获取负极极片上折痕的折痕位置。在第三图像获取装置403采集到图像数据后，第三图像获取装置403可以将获取到的折痕位置反馈至PLC控制***。
在将连续的正极极片裁切为至少一个上正极极片和至少一个下正极极片时，方法100还可以包括：生成至少一个上正极极片的第一标识和至少一个下正极极片的第二标识。
其中，第一标识和第二标识不同。
示例性地，第一标识可以为“1***”，如“1033”.第二标识可以为“5***”，如“5024”。或者，第一标识可以为“A***”，第二标识可以为“B***”。
应理解，本文中的具体的例子只是为了帮助本领域技术人员更好地理解本申请实施例，而非限制本申请实施例的范围。
具体而言，在对正极极片裁切之后，可以依次将得到的至少一个上正极极片和 至少一个下正极极片送到下一工位。在传送至少一个上正极极片和至少一个下正极极片的过程中，PLC控制***可以基于至少一个上正极极片和至少一个下正极极片，触发第四图像获取装置进行拍照，同时将当前时刻的极片标记为第一标识或第二标识。
作为一种示例，可以提前预设好传送上正极极片和下正极极片的规则。比如，规则可以包括先传送上正极极片还是先传送下正极极片。再比如，规则可以包括按照上正极极片、下正极极片、上正极极片、下正极极片……的顺序进行传送，或者，按照上正极极片、上正极极片、下正极极片、下正极极片、上正极极片、上正极极片……的顺序进行传送。
这样，每传送一个正极极片，PLC控制***可以触发第四图像获取装置进行拍照，并根据规则确定当前时刻的极片为上正极极片还是下正极极片。若为上正极极片，则生成第一标识；若为下正极极片，则生成第二标识。
作为另一种示例，如图5所示，第四图像获取装置可以包括第四图像获取装置50a和第四图像获取装置50b。在上正极极片经过第四图像获取装置50a位置时，PLC控制***可以触发第四图像获取装置50a进行拍照，并且将当前时刻的上正极极片标记为第一标识。在下正极极片经过第四图像获取装置50b位置时，PLC控制***可以触发第四图像获取装置50b进行拍照，并且将当前时刻的下正极极片标记为第二标识。
应理解，图5中的20和40分别可以为前文中的工位20和工位40。
在生成第一标识和第二标识后，作为一种示例，可以将第一标识和第二标识存储在一起。比如，按照第二极片的传送顺序将第一标识和第二标识交替存储在一起。
考虑到将第一标识和第二标识存储在一起，可能会出现第一标识和第二标识之间发生混乱的问题。因此，作为另一种示例，可以将第一标识存储在第一堆栈列表中，同时将第二标识存储在第二堆栈列表中。
如图6所示，601为第一堆栈列表，602为第二堆栈列表，第一堆栈列表601中存储的标识均为第一标识，第二堆栈列表602中存储的标识均为第二标识。
需要说明的是，第一标识和第二标识除了可以存储在第一堆栈列表和第二堆栈列表中，还可以存储在其他地方，本申请实施例对此不作具体限定。
该技术方案，将上正极极片的第一标识和下正极极片的第二标识存储在不同的堆栈列表中，能够有效防止第一标识和第二标识之间发生混乱的问题。比如，将第一标识误认为第二标识，将第二标识误认为第一标识，有利于后续工艺的进行。
之后，可以根据传送顺序，交替传送至少一个上正极极片和至少一个下正极极片。
可选地，上正极极片和下正极极片的传送时机可以通过工位40中第三图像获取装置403获取的折痕位置来确定。具体而言，在负极极片上的至少一个折痕到达第二极片的传送位置时，根据传送顺序，交替传送至少一个上正极极片和至少一个下正极极片。
该技术方案，在负极极片上的折痕达到正极极片的传送位置时，交替传送至少一个上正极极片和至少一个下正极极片，能够保证正极极片和负极极片之间精确对准，提高了电池单体的精度。
进一步地，在传送正极极片的过程中，可以根据传送顺序，对第一堆栈列表中的第一标识和第二堆栈列表中的第二标识进行交替出栈，并且根据第一标识和第二标识交替出栈的出栈顺序，将出栈后的第一标识和第二标识存储在第三堆栈列表中。
其中，同一个堆栈列表中的标识基于先存储先出栈的顺序进行出栈。第三堆栈列表中的序列即为正极极片的标识序列。
具体而言，若根据传送顺序确定第一个传送的是上正极极片，则第一堆栈列表中的至少一个第一标识出栈一个，接下来第二堆栈列表中的至少一个第二标识出栈一个，再接下来第一堆栈列表中的至少一个第一标识出栈一个，如此交替出栈。或者，若根据传送顺序确定第一个传送的是下正极极片，则第二堆栈列表中的至少一个第二标识出栈一个，接下来第一堆栈列表中的至少一个第一标识出栈一个，再接下来第二堆栈列表中的至少一个第二标识出栈一个，如此交替出栈。
并将交替出栈的第一标识和第二标识存储在第三堆栈列表中，如将图6所示的第一堆栈列表601中的第一标识和第二堆栈列表602中的标识存储在图7所示的第三堆栈列表701。从图7中可以看出，第一个传送的正极极片为上正极极片，且该上正极极片为第一标识“1001”对应的极片。
在将第一标识和第二标识存储在第三堆栈列表后，步骤130具体可以包括：在传送正极极片时，依次对第三堆栈列表中的标识序列进行出栈，并通过出栈后的标识序列触发第一图像获取装置，以使图像获取装置采集第一图像数据。
即按照标识序列，顺序采集每个第二极片的第一图像数据。
上述技术方案，由于是根据正极极片的传送顺序将第一标识和第二标识交替存储在第三堆栈列表中的，即第三堆栈列表中的标识序列与传送顺序对应。这样，在通过出栈后的标识序列触发第一图像获取装置采集正极极片的第一图像数据时，采集的第一图像数据也是与正极极片的传送顺序对应的，便于后续工艺处理。进一步地，通过标识序列触发第一图像获取装置采集第一图像数据，使得第一图像数据与标识序列具有强相关性，这样，若电池单体出现异常情况，则可以根据第一图像数据以及与其关联的标识序列，在较短的时间内确定具体是哪个极片出现了异常情况。
进一步地，图像获取装置可以包括第一子图像获取装置和第二子图像获取装置。若出栈的标识为标识序列中的第一标识，则触发第一子图像获取装置采集第一图像数据；若出栈的标识为标识序列中的第二标识，则触发第二子图像获取装置采集第一图像数据。
可选地，第一子图像获取装置和第二子图像获取装置可以为但不限于相机。
同时，方法100还可以包括：存储标识序列和第一图像数据。其中，标识序列和第一图像数据一一对应。例如，第一子图像获取装置和第二子图像获取装置采集到第一图像数据后，可以将第一图像数据以及标识序列发送给叠片上位***，叠片上位***将第一图像数据和标识序列汇总至对应的数据库中，以存储标识序列和第一图像数据。
举例说明，如图8所示的工位80。示例性地，该工位80可以为图5中的工位80。工位80包括第一子图像获取装置为803a，第二子图像获取装置为803b，804a和 804b分别为上隔膜和下隔膜，801为上正极极片，802为下正极极片。当在第一子图像获取装置803a位置处出栈的标识为第一标识时，如“1001”，触发第一子图像获取装置803a拍照，其他情况下不拍照；当在第二子图像获取装置803b位置处出栈的标识为第二标识时，如“5001”，触发第二子图像获取装置803b拍照，其他情况下不拍照。同时，存储拍照获取到的第一图像数据以及当前时刻的标识。
上述技术方案，将正极极片的标识序列和第一图像数据进行存储，使得对每个正极极片的第一图像数据都能进行追溯和查询。这样，在电池单体出现异常的情况下，能够直接根据存储的标识序列和第一图像数据确定具体出现异常情况的极片，不仅实现简单，而且有效减小了处理时间。
之后，将复合后的负极极片、隔膜、正极极片进行叠片。例如，在图5所示的工位90上进行叠片。
为了更加清楚地理解本申请实施例的极片的叠片方法100中120和130，以下结合图9描述本申请一种可能的实施例的方法100中120和130。
S901a：在40工位上对上正极极片进行裁切。
S901b：在40工位上对下正极极片进行裁切。
S902a：生成第一堆栈列表601，其中，第一堆栈列表601包括上正极极片的第一标识。
S902b：生成第二堆栈列表602，其中，第二堆栈列表602包括下正极极片的第二标识。
S903：根据正极极片的传送顺序触发第一堆栈列表601中的第一标识和第二堆栈列表602中的第二标识进行出栈。
S904：根据传送顺序，将第一堆栈列表601和第二堆栈列表602中出栈的标识生成第三堆栈列表701。
S905：工位80触发第三堆栈列表701中的标识出栈。
S906：根据第三堆栈列表701中出栈的标识触发对应的相机拍照。
S907：将第三堆栈列表701中出栈的标识传送给CCD。
S908:判断出栈的标识是否为第一标识或第二标识。
若为第一标识或第二标识，执行S910；若出栈的标识既不是第一标识也不是第二标识，则执行S909。
S909：不触发相机拍照。
S910：判断出栈的标识是否为第一标识。
若为第一标识，则执行S912；若不是第一标识，则执行S911。
S911：触发下正极极片对应的相机拍照，并存储第一图像数据。
S912；触发上正极极片对应的相机拍照，并存储第一图像数据。
上文详细描述了本申请实施例的方法实施例，下面描述本申请实施例的装置实施例，装置实施例与方法实施例相互对应，因此未详细描述的部分可参见前面各方法实施例，装置可以实现上述方法中任意可能实现的方式。
图10示出了本申请一个实施例的极片的叠片装置1000的示意性框图。该叠片 装置1000可以执行上述本申请实施例的极片的叠片方法100。如图9所示，该叠片装置1000可以包括：
处理单元1010，用于根据第一极片，确定传送多个第二极片的传送顺序，所述第一极片为连续的极片，所述多个第二极片包括至少一个上极片和至少一个下极片，所述多个第二极片为非连续的极片，所述传送顺序用于对所述至少一个上极片和所述至少一个下极片进行交替传送。
生成单元1020，用于根据所述传送顺序，生成所述多个第二极片的标识序列。
采集单元1030，用于在根据所述传送顺序对所述多个第二极片进行传送的过程中，根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据。
可选地，在本申请一个实施例中，所述处理单元1010还用于：存储所述标识序列和所述第一图像数据，其中，所述标识序列和所述第一图像数据一一对应。
可选地，在本申请一个实施例中，所述处理单元1010具体用于：获取第一极片的折痕信息，所述折痕信息用于指示所述第一极片上的至少一个折痕位于所述第一极片的上表面还是下表面；根据所述折痕信息，确定所述传送顺序。
可选地，在本申请一个实施例中，若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的上表面，所述多个第二极片中第一个传送的为所述至少一个上极片中的第一个上极片；若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的下表面，所述多个第二极片中第一个传送的为传送所述至少一个下极片中的第一个下极片。
可选地，在本申请一个实施例中，所述生成单元1020还用于：在将连续的第二极片裁切为所述至少一个上极片和所述至少一个下极片时，生成所述至少一个上极片的第一标识和所述至少一个下极片的第二标识。
所述处理单元1010还用于：将所述第一标识存储在第一堆栈列表中，同时将所述第二标识存储在第二堆栈列表中。
可选地，在本申请一个实施例中，所述处理单元1010还用于：根据所述传送顺序，对所述第一堆栈列表中的所述第一标识和所述第二堆栈列表中的所述第二标识进行交替出栈，其中，同一个堆栈列表中的标识基于先存储先出栈的顺序进行出栈；按照所述第一标识和所述第二标识交替出栈的出栈顺序，将出栈后的所述第一标识和所述第二标识存储在第三堆栈列表中，所述第三堆栈列表中的序列为所述标识序列。
可选地，在本申请一个实施例中，所述叠片装置1000包括第一图像获取装置，所述处理单元1010还用于：在传送所述第二极片时，依次对所述第三堆栈列表中的标识序列进行出栈；通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据。
可选地，在本申请一个实施例中，所述第一图像获取装置包括第一子图像获取装置和第二子图像获取装置，所述处理单元1010具体用于：若出栈的标识为所述标识序列中的第一标识，触发所述第一子图像获取装置采集所述第一图像数据；若出栈的标识为所述标识序列中的第二标识，触发所述第二子图像获取装置采集所述第一图像数据。
可选地，在本申请一个实施例中，所述处理单元1010具体用于：检测所述第一极片上的切孔；检测到所述第一极片上的切孔后，触发第二图像获取装置采集所述第一极片的第二图像数据，所述第二图像数据用于获取所述折痕信息。
可选地，在本申请一个实施例中，还包括：传送单元，用于在所述至少一个折痕到达所述多个第二极片的传送位置时，根据所述传送顺序，交替传送所述至少一个上极片和所述至少一个下极片。
可选地，在本申请一个实施例中，所述第一极片为负极极片，所述第二极片为正极极片，所述上极片为上正极极片，所述下极片为下正极极片。
应理解，该叠片装置1000可以实现方法100中的相应操作，为了简洁，在此不再赘述。相应地，该叠片装置1000可以实现与前述方法100相同的技术效果，为了内容的简洁，此处不再进行描述。
图11是本申请实施例的极片的叠片装置1100的硬件结构示意图。叠片装置1100包括存储器1101、处理器1102、通信接口1103以及总线1104。其中，存储器1101、处理器1102、通信接口1103通过总线1104实现彼此之间的通信连接。
存储器1101可以是只读存储器(read-only memory，ROM)，静态存储设备和随机存取存储器(random access memory，RAM)。存储器1101可以存储程序，当存储器1101中存储的程序被处理器1102执行时，处理器1102和通信接口1103用于执行本申请实施例的极片的叠片方法的各个步骤。
处理器1102可以采用通用的中央处理器(central processing unit，CPU)，微处理器，应用专用集成电路(application specific integrated circuit，ASIC)，图形处理器(graphics processing unit，GPU)或者一个或多个集成电路，用于执行相关程序，以实现本申请实施例的装置中的单元所需执行的功能，或者执行本申请实施例的极片的叠片方法。
处理器1102还可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，本申请实施例的极片的叠片方法的各个步骤可以通过处理器1102中的硬件的集成逻辑电路或者软件形式的指令完成。
上述处理器1102还可以是通用处理器、数字信号处理器(digital signal processing，DSP)、ASIC、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1101，处理器1102读取存储器1101中的信息，结合其硬件完成本申请实施例的叠片装置1100中包括的单元所需执行的功能，或者执行本申请实施例的极片的叠片方法。
通信接口1103使用例如但不限于收发器一类的收发装置，来实现叠片装置1100与其他设备或通信网络之间的通信。
总线1104可包括在装置1100各个部件(例如，存储器1101、处理器1102、通信接口1103)之间传送信息的通路。
应注意，尽管上述叠片装置1100仅仅示出了存储器、处理器、通信接口，但是在具体实现过程中，本领域的技术人员应当理解，BMS 600还可以包括实现正常运行所必须的其他器件。同时，根据具体需要，本领域的技术人员应当理解，叠片装置1100还可包括实现其他附加功能的硬件器件。此外，本领域的技术人员应当理解，叠片装置1100也可仅仅包括实现本申请实施例所必须的器件，而不必包括图11中所示的全部器件。
本申请实施例还提供了一种叠片机，该叠片机可以包括图10或图11所示的极片的叠片装置。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (23)

  1. 一种极片的叠片方法，其特征在于，所述方法包括：
    根据第一极片，确定传送多个第二极片的传送顺序，所述第一极片为连续的极片，所述多个第二极片包括至少一个上极片和至少一个下极片，所述多个第二极片为非连续的极片，所述传送顺序用于对所述至少一个上极片和所述至少一个下极片进行交替传送；
    根据所述传送顺序，生成所述多个第二极片的标识序列；
    在根据所述传送顺序对所述多个第二极片进行传送的过程中，根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据。
  2. 根据权利要求1所述的叠片方法，其特征在于，所述方法还包括：
    存储所述标识序列和所述第一图像数据，其中，所述标识序列和所述第一图像数据一一对应。
  3. 根据权利要求1或2所述的叠片方法，其特征在于，所述根据第一极片，确定传送多个第二极片的传送顺序，包括：
    获取第一极片的折痕信息，所述折痕信息用于指示所述第一极片上的至少一个折痕位于所述第一极片的上表面还是下表面；
    根据所述折痕信息，确定所述传送顺序。
  4. 根据权利要求3所述的叠片方法，其特征在于，若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的上表面，所述多个第二极片中第一个传送的为所述至少一个上极片中的第一个上极片；
    若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的下表面，所述多个第二极片中第一个传送的为传送所述至少一个下极片中的第一个下极片。
  5. 根据权利要求1至4中任一项所述的叠片方法，其特征在于，所述方法还包括：
    在将连续的第二极片裁切为所述至少一个上极片和所述至少一个下极片时，生成所述至少一个上极片的第一标识和所述至少一个下极片的第二标识；
    将所述第一标识存储在第一堆栈列表中，同时将所述第二标识存储在第二堆栈列表中。
  6. 根据权利要求5所述的叠片方法，其特征在于，所述根据所述传送顺序，生成所述多个第二极片的标识序列，包括：
    根据所述传送顺序，对所述第一堆栈列表中的所述第一标识和所述第二堆栈列表中的所述第二标识进行交替出栈，其中，同一个堆栈列表中的标识基于先存储先出栈的顺序进行出栈；
    按照所述第一标识和所述第二标识交替出栈的出栈顺序，将出栈后的所述第一标识和所述第二标识存储在第三堆栈列表中，所述第三堆栈列表中的序列为所述标识序列。
  7. 根据权利要求6所述的叠片方法，其特征在于，所述叠片方法应用于叠片机，所述叠片机包括第一图像获取装置，所述根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据，包括：
    在传送所述第二极片时，依次对所述第三堆栈列表中的标识序列进行出栈；
    通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据。
  8. 根据权利要求7所述的叠片方法，其特征在于，所述第一图像获取装置包括第一子图像获取装置和第二子图像获取装置，所述通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据，包括：
    若出栈的标识为所述标识序列中的第一标识，触发所述第一子图像获取装置采集所述第一图像数据；
    若出栈的标识为所述标识序列中的第二标识，触发所述第二子图像获取装置采集所述第一图像数据。
  9. 根据权利要求1至8中任一项所述的叠片方法，其特征在于，所述获取第一极片的折痕信息，包括：
    检测所述第一极片上的切孔；
    检测到所述第一极片上的切孔后，触发第二图像获取装置采集所述第一极片的第二图像数据，所述第二图像数据用于获取所述折痕信息。
  10. 根据权利要求1至9中任一项所述的叠片方法，其特征在于，所述方法还包括：
    在所述至少一个折痕到达所述多个第二极片的传送位置时，根据所述传送顺序，交替传送所述至少一个上极片和所述至少一个下极片。
  11. 根据权利要求1至10中任一项所述的叠片方法，其特征在于，所述第一极片为负极极片，所述第二极片为正极极片，所述上极片为上正极极片，所述下极片为下正极极片。
  12. 一种极片的叠片装置，其特征在于，包括：
    处理单元，用于根据第一极片，确定传送多个第二极片的传送顺序，所述第一极片为连续的极片，所述多个第二极片包括至少一个上极片和至少一个下极片，所述多个第二极片为非连续的极片，所述传送顺序用于对所述至少一个上极片和所述至少一个下极片进行交替传送；
    生成单元，用于根据所述传送顺序，生成所述多个第二极片的标识序列；
    采集单元，用于在根据所述传送顺序对所述多个第二极片进行传送的过程中，根据所述标识序列，采集所述多个第二极片中每个第二极片的第一图像数据。
  13. 根据权利要求12所述的叠片装置，其特征在于，所述处理单元还用于：
    存储所述标识序列和所述第一图像数据，其中，所述标识序列和所述第一图像数据一一对应。
  14. 根据权利要求12或13所述的叠片装置，其特征在于，所述处理单元具体用于：
    获取第一极片的折痕信息，所述折痕信息用于指示所述第一极片上的至少一个折痕位于所述第一极片的上表面还是下表面；
    根据所述折痕信息，确定所述传送顺序。
  15. 根据权利要求14所述的叠片装置，其特征在于，若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的上表面，所述多个第二极片中第一个传送的为所述至少一个上极片中的第一个上极片；
    若所述折痕信息用于指示所述至少一个折痕中的第一个折痕位于所述第一极片的下表面，所述多个第二极片中第一个传送的为传送所述至少一个下极片中的第一个下极片。
  16. 根据权利要求12至15中任一项所述的叠片装置，其特征在于，所述生成单元还用于：
    在将连续的第二极片裁切为所述至少一个上极片和所述至少一个下极片时，生成所述至少一个上极片的第一标识和所述至少一个下极片的第二标识；
    所述处理单元还用于：
    将所述第一标识存储在第一堆栈列表中，同时将所述第二标识存储在第二堆栈列表中。
  17. 根据权利要求16所述的叠片装置，其特征在于，所述处理单元还用于：
    根据所述传送顺序，对所述第一堆栈列表中的所述第一标识和所述第二堆栈列表中的所述第二标识进行交替出栈，其中，同一个堆栈列表中的标识基于先存储先出栈的顺序进行出栈；
    按照所述第一标识和所述第二标识交替出栈的出栈顺序，将出栈后的所述第一标识和所述第二标识存储在第三堆栈列表中，所述第三堆栈列表中的序列为所述标识序列。
  18. 根据权利要求17所述的叠片装置，其特征在于，所述叠片装置包括第一图像获取装置，所述处理单元还用于：
    在传送所述第二极片时，依次对所述第三堆栈列表中的标识序列进行出栈；
    通过出栈后的所述标识序列触发所述第一图像获取装置，以使所述图像获取装置采集所述第一图像数据。
  19. 根据权利要求18所述的叠片装置，其特征在于，所述第一图像获取装置包括第一子图像获取装置和第二子图像获取装置，所述处理单元具体用于：
    若出栈的标识为所述标识序列中的第一标识，触发所述第一子图像获取装置采集所述第一图像数据；
    若出栈的标识为所述标识序列中的第二标识，触发所述第二子图像获取装置采集所述第一图像数据。
  20. 根据权利要求12至19中任一项所述的叠片装置，其特征在于，所述处理单元具体用于：
    检测所述第一极片上的切孔；
    检测到所述第一极片上的切孔后，触发第二图像获取装置采集所述第一极片的第 二图像数据，所述第二图像数据用于获取所述折痕信息。
  21. 根据权利要求12至20中任一项所述的叠片装置，其特征在于，还包括：
    传送单元，用于在所述至少一个折痕到达所述多个第二极片的传送位置时，根据所述传送顺序，交替传送所述至少一个上极片和所述至少一个下极片。
  22. 根据权利要求12至21中任一项所述的叠片装置，其特征在于，所述第一极片为负极极片，所述第二极片为正极极片，所述上极片为上正极极片，所述下极片为下正极极片。
  23. 一种叠片机，其特征在于，包括：
    如权利要求12至22中任一项所述的极片的叠片装置。
PCT/CN2022/070630 2022-01-07 2022-01-07 极片的叠片方法、装置和叠片机 WO2023130338A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116609493A (zh) * 2023-07-21 2023-08-18 宁德时代新能源科技股份有限公司 压痕检测方法、叠片电芯制造方法、装置和电子设备
CN116914272A (zh) * 2023-09-12 2023-10-20 宁德时代新能源科技股份有限公司 极片折叠控制方法、装置、极片折叠装置及电池生产***

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120105211A (ko) * 2011-03-15 2012-09-25 삼성에스디아이 주식회사 이차전지용 전극 모재의 결함표시장치 및 결함표시방법
CN102916160A (zh) * 2011-08-03 2013-02-06 三星Sdi株式会社 用于形成电极板的装置
KR20130124098A (ko) * 2012-05-04 2013-11-13 주식회사 엘지화학 바이셀의 제조방법
KR20170059740A (ko) * 2015-11-23 2017-05-31 주식회사 엘지화학 전극 조립체 폴딩 장치 및 이를 이용한 전극 조립체 폴딩 방법
CN208622872U (zh) * 2018-07-20 2019-03-19 宁德时代新能源科技股份有限公司 电极组件及二次电池
CN112310487A (zh) * 2019-07-31 2021-02-02 广东利元亨智能装备股份有限公司 叠片方法
CN113574710A (zh) * 2019-03-12 2021-10-29 株式会社Lg新能源 二次电池的层压设备和层压方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120105211A (ko) * 2011-03-15 2012-09-25 삼성에스디아이 주식회사 이차전지용 전극 모재의 결함표시장치 및 결함표시방법
CN102916160A (zh) * 2011-08-03 2013-02-06 三星Sdi株式会社 用于形成电极板的装置
KR20130124098A (ko) * 2012-05-04 2013-11-13 주식회사 엘지화학 바이셀의 제조방법
KR20170059740A (ko) * 2015-11-23 2017-05-31 주식회사 엘지화학 전극 조립체 폴딩 장치 및 이를 이용한 전극 조립체 폴딩 방법
CN208622872U (zh) * 2018-07-20 2019-03-19 宁德时代新能源科技股份有限公司 电极组件及二次电池
CN113574710A (zh) * 2019-03-12 2021-10-29 株式会社Lg新能源 二次电池的层压设备和层压方法
CN112310487A (zh) * 2019-07-31 2021-02-02 广东利元亨智能装备股份有限公司 叠片方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116609493A (zh) * 2023-07-21 2023-08-18 宁德时代新能源科技股份有限公司 压痕检测方法、叠片电芯制造方法、装置和电子设备
CN116609493B (zh) * 2023-07-21 2023-09-22 宁德时代新能源科技股份有限公司 压痕检测方法、叠片电芯制造方法、装置和电子设备
CN116914272A (zh) * 2023-09-12 2023-10-20 宁德时代新能源科技股份有限公司 极片折叠控制方法、装置、极片折叠装置及电池生产***
CN116914272B (zh) * 2023-09-12 2024-02-06 宁德时代新能源科技股份有限公司 极片折叠控制方法、装置、极片折叠装置及电池生产***

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