WO2017035749A1 - 二次电池电芯及其卷绕成型*** - Google Patents

二次电池电芯及其卷绕成型*** Download PDF

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Publication number
WO2017035749A1
WO2017035749A1 PCT/CN2015/088638 CN2015088638W WO2017035749A1 WO 2017035749 A1 WO2017035749 A1 WO 2017035749A1 CN 2015088638 W CN2015088638 W CN 2015088638W WO 2017035749 A1 WO2017035749 A1 WO 2017035749A1
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WO
WIPO (PCT)
Prior art keywords
pole piece
cathode
anode
tab
secondary battery
Prior art date
Application number
PCT/CN2015/088638
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English (en)
French (fr)
Inventor
郭培培
赵义
何平
方宏新
程文强
Original Assignee
宁德新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=58186517&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2017035749(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 宁德新能源科技有限公司 filed Critical 宁德新能源科技有限公司
Priority to PCT/CN2015/088638 priority Critical patent/WO2017035749A1/zh
Priority to CN201580082766.1A priority patent/CN108352492B/zh
Publication of WO2017035749A1 publication Critical patent/WO2017035749A1/zh
Priority to US15/908,327 priority patent/US11329352B2/en
Priority to US17/710,936 priority patent/US12009483B2/en

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Classifications

    • 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
    • H01M10/0409—Machines for assembling batteries for cells with wound 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
    • H01M10/05—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
    • 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
    • H01M10/0431—Cells with wound or folded 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
    • H01M10/05—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
    • 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
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 invention relates to the field of secondary batteries, and more particularly to a secondary battery cell and a winding forming system thereof.
  • Lithium-ion batteries (a type of secondary battery) are widely used in electronics, automotive and electric vehicles, aerospace, micro-electromechanical, and energy storage. As the application environment and conditions tend to be complicated and demanding, higher requirements are placed on the safety performance, energy density and production cost of lithium ion batteries.
  • the prior art has the purpose of increasing the energy density by forming a groove on the pole piece and welding the tab in the groove, but at present, the process is realized by independent laser cleaning equipment and welding winding equipment, respectively.
  • the comprehensive cost of these equipments and the large space occupied by the plant lead to a relatively high production cost of the overall lithium battery; and the edge of the groove cleaned by the laser on the pole piece is caused by overheating perforation or burning caused by the deviation of the focal length fluctuation, resulting in the concave More burrs are formed on the current collector at the edge of the groove.
  • the burr-shaped pole piece is directly prepared into a battery core without treatment, there is a serious safety hazard such as internal short circuit or even fire of the burr piercing separator.
  • the burr is prevented from piercing the separator by affixing a thick adhesive tape in the groove, however this tends to increase the thickness of the cell and cause a loss of energy density.
  • an object of the present invention is to provide a secondary battery cell capable of preventing an internal short circuit of a secondary battery cell while improving an energy density of a secondary battery cell, and improving a secondary battery The safety performance of the battery.
  • Another object of the present invention is to provide a secondary battery cell winding forming system capable of reducing the volume of a secondary battery cell winding forming system, saving a space occupied by a plant, and reducing the production of a secondary battery cell. Cost and increase the energy density and safety performance of the prepared secondary battery cells.
  • the present invention provides a secondary battery cell comprising an anode pole piece, an anode tab, a cathode pole piece, a cathode tab, and a separator.
  • the anode pole piece includes: an anode current collector; and an anode diaphragm disposed on a surface of the anode current collector.
  • the cathode pole piece includes: a cathode current collector; and a cathode diaphragm disposed on a surface of the cathode current collector.
  • the separator is disposed between the anode pole piece and the cathode pole piece.
  • the anode pole piece is formed with: an anode tab receiving groove, the bottom is an anode current collector and the circumference side is an anode diaphragm, and the anode pole is received in the anode tab receiving groove and electrically connected to the anode tab receiving groove Anode current collector.
  • the cathode pole piece is formed with a cathode tab receiving groove, a cathode current collector at the bottom and a cathode diaphragm on the circumference side, and the cathode tab is received in the cathode tab receiving groove and electrically connected to the cathode tab receiving groove.
  • Cathode current collector is formed with a cathode tab receiving groove, a cathode current collector at the bottom and a cathode diaphragm on the circumference side, and the cathode tab is received in the cathode tab receiving groove and electrically connected to the cathode tab receiving groove.
  • the anode pole piece is further formed with: an anode pole piece die-cut notch, located at a side edge of the anode tab receiving groove and penetrating through the anode pole piece.
  • the cathode pole piece is further formed with: a cathode pole piece die-cut notch, located at a side edge of the cathode tab receiving groove and penetrating through the cathode pole piece.
  • the present invention provides a secondary battery cell winding forming system including a working platform, a winding mechanism, an anode pole piece unwinding roller, an anode pole piece cleaning mechanism, and an anode pole Sheet die cutting mechanism, anode tab supply mechanism, anode tab connection mechanism, anode pole piece transport mechanism, cathode pole piece unwinding roller, cathode pole piece cleaning mechanism, cathode pole piece die cutting mechanism, cathode tab supply mechanism, cathode a tab connecting mechanism, a cathode pole piece transporting mechanism, a first isolating film unwinding roller, a second isolating film unwinding roller, a first isolating film transporting mechanism, and a second isolating film transporting mechanism.
  • the work platform is fixed.
  • the winding mechanism is disposed on the working platform.
  • the anode pole piece unwinding roller is disposed on the working platform, and the anode pole piece is wound, the anode pole piece comprises: an anode current collector; and the anode film piece is disposed on the surface of the anode current collector.
  • the anode pole piece cleaning mechanism is disposed on the working platform and is located downstream of the anode pole piece unwinding roller for cleaning the anode pole receiving groove at the bottom of which is an anode current collector and the peripheral side is an anode diaphragm.
  • the anode pole piece die cutting mechanism is disposed on the working platform and is located downstream of the anode pole piece cleaning mechanism for die cutting the anode pole piece at the side edge of the anode tab receiving groove to form an anode pole penetrating the anode pole piece The die cuts the gap.
  • the anode tab supply mechanism is disposed on the working platform, is located downstream of the anode pole piece die cutting mechanism, and is wound with an anode tab for providing an anode tab to the anode tab receiving groove of the anode pole piece of the anode pole piece die-cut So that the anode tab is received in the anode tab receiving groove.
  • the anode tab connection mechanism is disposed on the working platform and is located downstream of the anode pole piece die cutting mechanism, and is configured to electrically connect and fix the anode poles received in the anode tab receiving recesses with the anode current collectors at the anode tab receiving recesses.
  • the anode pole piece transporting mechanism is disposed on the working platform, and is configured to sequentially transport the anode pole piece unwound from the anode pole piece unwinding roll to the roll through the anode pole piece cleaning mechanism, the anode pole piece die cutting mechanism, and the anode tab connecting mechanism.
  • the anode pole piece transporting mechanism is disposed on the working platform, and is configured to sequentially transport the anode pole piece unwound from the anode pole piece unwinding roll to the roll through the anode pole piece cleaning mechanism, the anode pole piece die cutting mechanism, and the anode tab connecting mechanism.
  • the cathode pole piece unwinding roller is disposed on the working platform, the cathode pole piece is wound, the cathode pole piece comprises: a cathode current collector; and the cathode film is disposed on the surface of the cathode current collector.
  • the cathode pole piece cleaning mechanism is disposed on the working platform and is located downstream of the cathode pole piece unwinding roller for cleaning the cathode tab receiving groove at the bottom of which is a cathode current collector and the peripheral side is a cathode diaphragm.
  • the cathode pole piece die-cutting mechanism is disposed on the working platform and is located downstream of the cathode pole piece cleaning mechanism for die-cutting the cathode pole piece at the side edge of the cathode tab receiving groove to form a die-cut gap of the cathode pole piece penetrating the cathode pole piece.
  • the cathode tab supply mechanism is disposed on the working platform, is located downstream of the cathode pole piece die-cutting mechanism, and is wound with a cathode tab for providing a cathode tab receiving groove of the cathode pole piece of the die-cutting cathode die piece die-cut gap
  • the cathode tab is such that the cathode tab is received in the cathode tab receiving recess.
  • the cathode tab connection mechanism is disposed on the working platform and is located downstream of the cathode pole piece die cutting mechanism, and is configured to electrically connect the cathode current collector received in the cathode tab receiving groove with the cathode current collector at the cathode tab receiving groove.
  • the cathode pole piece transporting mechanism is disposed on the working platform, and is configured to sequentially transport the cathode pole piece unwound from the cathode pole piece unwinding roll to the roll through the cathode pole piece cleaning mechanism, the cathode pole piece die cutting mechanism, and the cathode tab connection mechanism.
  • the cathode pole piece transporting mechanism is disposed on the working platform, and is configured to sequentially transport the cathode pole piece unwound from the cathode pole piece unwinding roll to the roll through the cathode pole piece cleaning mechanism, the cathode pole piece die cutting mechanism, and the cathode tab connection mechanism.
  • the cathode pole piece transporting mechanism is disposed on the working platform, and is configured to sequentially transport the cathode pole piece unwound from the cathode pole piece unwinding roll to the roll through the cathode pole piece cleaning mechanism, the cathode pole piece die cutting mechanism, and the cathode tab connection mechanism.
  • the first release film unwinding roller is disposed on the working platform and is wound with a separator.
  • the second release film unwinding roller is disposed on the working platform and is wound with another separator.
  • a first isolating film transport mechanism is disposed on the working platform for unwinding the first release film unwinding roller
  • the corresponding separator is conveyed to the winding mechanism so that the corresponding separator is spaced between the anode pole piece and the cathode pole piece after the secondary battery cell is wound and formed.
  • the second isolating film transporting mechanism is disposed on the working platform for conveying the corresponding separating film unwound from the second release film unwinding roll to the winding mechanism, so that the corresponding cell is separated after the secondary battery cell is wound and formed Between the anode pole piece and the cathode pole piece.
  • the anode tab is received in the anode tab receiving groove
  • the cathode tab is received in the cathode tab receiving groove, thereby effectively improving the energy density of the secondary battery cell
  • the die-cutting notch can remove the burr formed on the current collector of the edge portion of the anode tab receiving groove during the forming process
  • the die-cutting notch of the cathode pole piece can effectively remove the edge portion of the cathode tab receiving groove during the forming process.
  • the burrs formed on the current collector effectively prevent internal short-circuiting of the secondary battery cells, thereby improving the safety performance of the secondary battery cells while ensuring high energy density.
  • the film unwinding roller, the second isolating film unwinding roller, the first isolating film conveying mechanism and the first isolating film conveying mechanism are integrated on one worktable, thereby reducing the volume of the secondary battery cell winding forming system and saving the plant Taking up space, reducing the production cost of the secondary battery cell; the anode pole piece die cutting mechanism can remove the burr on the current collector at the edge portion of the anode tab receiving groove cleaned by the anode pole
  • Fig. 1 is a schematic view showing the structure of a secondary battery cell winding forming system of the present invention.
  • FIG. 2 is a schematic view of the anode pole piece of the secondary battery cell of the present invention after soldering to the tab, wherein (a) is a cross-sectional view of the anode pole piece and the tab, and (b) is a figure (a) A top view of the anode pole piece is shown.
  • FIG 3 is a schematic view of the cathode pole piece and the tab of the secondary battery cell of the present invention, wherein Figure (a) is a cross-sectional view of the cathode pole piece after welding with the tab, and Figure (b) is a bottom view of the cathode pole piece shown in Figure (a).
  • FIG. 4 is a schematic view showing a die cutting process of a pole piece of a secondary battery according to the present invention, wherein (a) is a schematic view of a die cutting process of the anode pole piece, and (b) is a schematic view of a die cutting process of the cathode pole piece.
  • FIG. 5 is a schematic view of a pole piece of a secondary battery cell of the present invention, wherein (a) is a schematic view of the anode pole piece, and (b) is a schematic view of the cathode pole piece.
  • FIG. 6 is a schematic view of a prior art secondary battery cell sheet, wherein (a) is a schematic view of the anode pole piece, and (b) is a schematic view of the cathode pole piece.
  • a secondary battery cell 1 includes an anode pole piece 101, an anode tab 102, a cathode pole piece 103, a cathode tab 104, and a separator 105.
  • the anode pole piece 101 includes an anode current collector 1011, and an anode diaphragm 1012 disposed on a surface of the anode current collector 1011.
  • the cathode pole piece 103 includes a cathode current collector 1031, and a cathode diaphragm 1032 disposed on a surface of the cathode current collector 1031.
  • the separator 105 is disposed between the anode pole piece 101 and the cathode pole piece 103.
  • the anode pole piece 101 is formed with an anode tab receiving recess 1013, an anode current collector 1011 at the bottom and an anode diaphragm 1012 at the peripheral side.
  • the anode tab 102 is received in the anode tab receiving recess 1013 and electrically connected to the anode pole.
  • the ear receives the anode current collector 1011 at the groove 1013.
  • the cathode pole piece 103 is formed with a cathode tab receiving recess 1033, a cathode current collector 1031 at the bottom and a cathode diaphragm 1032 at the peripheral side.
  • the cathode tab 104 is received in the cathode tab receiving recess 1033 and electrically connected to the cathode pole.
  • the ear receives the cathode current collector 1031 at the groove 1033.
  • the anode pole piece 101 is further formed with an anode pole piece die-cut notch 1014 located at a side edge of the anode tab receiving groove 1013 and penetrating through the anode pole piece 101.
  • the cathode pole piece 103 is further formed with a cathode pole piece die-cut notch 1034 located at a side edge of the cathode tab receiving groove 1033 and penetrating through the cathode pole piece 103.
  • the anode tab 102 is received in the anode tab receiving recess 1013, and the cathode tab 104 is received in the cathode tab receiving recess 1033, thereby effectively improving the secondary battery cell 1
  • the energy density; the anode pole piece die-cut notch 1014 can remove the burr formed on the current collector 1011 of the edge portion of the anode tab receiving groove 1013 during the forming process, and the cathode pole piece die-cut notch 1034 can effectively remove the cathode tab receiving recess
  • the groove 1033 is burred formed on the current collector 1031 of the edge portion during the formation process, thereby effectively preventing the secondary battery cell 1 from being internally short-circuited, thereby improving the safety performance of the secondary battery cell 1 while ensuring high energy density. .
  • the secondary battery cell 1 is a wound cell.
  • the length of the anode pole piece die-cut notch 1014 in the longitudinal direction L may be the length of the anode tab receiving groove 1013. 0.9 to 1.2 times; the width of the anode pole piece die-cut notch 1014 in the width direction W can be an anode tab
  • the width of the receiving groove 1013 is 0.2 to 0.8 times.
  • the length of the cathode pole piece die-cut notch 1034 in the longitudinal direction L may be the length of the cathode tab receiving groove 1033. 0.9 to 1.2 times; the width of the cathode pole piece die-cut notch 1034 in the width direction W may be 0.2 to 0.8 times the width of the cathode tab accommodation groove 1033.
  • the insulating tape T may not be attached to the anode pole piece 101.
  • the bonding of the insulating tape T to the anode pole piece 101 does not improve the secondary battery cell 1, but may increase the thickness of the secondary battery cell 1 and lower the energy density of the secondary battery cell 1.
  • the secondary battery cell 1 further includes: a first insulating tape T1 pasted on a cathode tab that has received the cathode tab 104 The receiving recess 1033; and the second insulating tape T2 are attached to a portion of the cathode diaphragm 1032 that is aligned with the anode tab receiving recess 1013 after the secondary battery cell 1 is wound.
  • the cathode active material of the cathode diaphragm 1032 which is free from the anode tab 102 is reduced, and the cathode active material of the cathode diaphragm 1032 is freely diffused to the aligned anode tab 102, thereby further
  • the cathode active material of the cathode diaphragm 1032 can be alleviated at the anode tab 102 during charging and discharging of the secondary battery, thereby finally reducing the problem of precipitation of the cathode active material at the anode tab 102 while avoiding the anode tab 102.
  • the anode pole piece 101 is further formed with an anode mating recess 1015, the bottom is an anode current collector 1011 and the peripheral side is an anode film.
  • the sheet 1012 is located on the back side of the anode tab receiving recess 1013.
  • the secondary battery cell 1 further includes: a third insulating tape T3. The portion of the cathode film 1032 that is aligned with the anode mating recess 1015 after the secondary battery cell 1 is wound and formed is pasted.
  • the cathode pole piece 103 is further formed with a cathode mating recess 1035, the bottom is a cathode current collector 1031 and the peripheral side is a cathode film.
  • the sheet 1032 is located on the back side of the cathode tab receiving groove 1033.
  • the secondary battery cell 1 further includes: a fourth insulating tape T4. , pasted in the cathode mating recess 1035.
  • the anode pole piece 101 is further formed with an anode mating recess 1015, the bottom is an anode current collector 1011 and the peripheral side is an anode diaphragm 1012, which is located at the anode tab.
  • the front side of the receiving recess 1013 is opposite to the back side, as shown in FIG. 2(a);
  • the cathode pole piece 103 is further formed with a cathode mating recess 1035, the bottom is a cathode current collector 1031 and the peripheral side is a cathode diaphragm 1032, which is located at the cathode tab.
  • the secondary battery cell 1 further includes: a third insulating tape T3, which is attached to the cathode film 1032 after being wound and formed in the secondary battery cell 1. A portion aligned with the anode mating recess 1015; and a fourth insulating tape T4 pasted in the cathode mating recess 1035.
  • the first insulating tape T1, the second insulating tape T2, the third insulating tape T3, and the fourth insulating tape T4 are single-sided insulating tape or double-sided insulating tape.
  • double-sided insulating tape the double-sided insulating tape bonding area is tighter than that of the single-sided insulating tape, so that the integrity of the secondary battery cell is strengthened, thereby avoiding the secondary battery cell in the shaping process and the secondary battery. After the charge and discharge expansion, the region is raised to become the largest deformation zone.
  • a secondary battery cell winding forming system includes a work platform 201, a winding mechanism 202, an anode pole piece unwinding roll 203, an anode pole piece cleaning mechanism 204, an anode pole piece die cutting mechanism 205, An anode tab supply mechanism 206, an anode tab connection mechanism 207, an anode pole piece transport mechanism 208, a cathode pole piece unwinding roll 209, a cathode pole piece cleaning mechanism 210, a cathode pole piece die cutting mechanism 211, and a cathode tab supply mechanism 212
  • the work platform 201 is stationary.
  • the winding mechanism 202 is disposed on the work platform 201.
  • the anode pole piece unwinding roller 203 is disposed on the work platform 201, and is wound with the anode pole piece 101.
  • the anode pole piece 101 includes an anode current collector 1011, and an anode diaphragm 1012 disposed on the surface of the anode current collector 1011.
  • the anode pole piece cleaning mechanism 204 is disposed on the working platform 201 and is located downstream of the anode pole piece unwinding roller 203 for cleaning the anode pole piece of the anode current collector 1011 at the bottom and the anode diaphragm 1012 on the circumferential side on the anode pole piece 101.
  • the groove 1013 is received.
  • the anode pole piece die cutting mechanism 205 is disposed on the working platform 201 and is located downstream of the anode pole piece cleaning mechanism 204 for die-cutting the anode pole piece 101 at the side edge of the anode tab receiving groove 1013 to form the through the anode pole piece 101.
  • the anode pole piece die cuts the gap 1014;
  • the anode tab supply mechanism 206 is disposed on the working platform 201, downstream of the anode pole piece die cutting mechanism 205, and is wound with an anode tab 102 for accommodating the anode tab of the anode pole piece 101 of the notch 1014 to the anode pole piece.
  • the recess 1013 provides an anode tab 102 for receiving the anode tab 102 within the anode tab receiving recess 1013.
  • the anode tab connection mechanism 207 is disposed on the working platform 201 and is located downstream of the anode pole piece die cutting mechanism 205 for accommodating the anode tab 102 and the anode tab receiving recess 1013 of the anode tab receiving recess 1013.
  • the current collector 1011 is electrically connected and fixed.
  • the anode pole piece transport mechanism 208 is disposed on the work platform 201 for sequentially passing the anode pole piece 101 unwound from the anode pole piece unwinding roll 203 through the anode pole piece cleaning mechanism 204, the anode pole piece die cutting mechanism 205, and the anode tab.
  • the connection mechanism 207 is sent to the winding mechanism 202.
  • the cathode pole piece unwinding roller 209 is disposed on the work platform 201, and is wound with a cathode pole piece 103 including a cathode current collector 1031 and a cathode diaphragm 1032 disposed on the surface of the cathode current collector 1031.
  • the cathode pole piece cleaning mechanism 210 is disposed on the working platform 201, and is located downstream of the cathode pole piece unwinding roller 209 for cleaning the cathode tab of the cathode current collector 1031 and the cathode side of the cathode diaphragm 1032 on the cathode pole piece 103.
  • the groove 1033 is received.
  • the cathode pole piece die cutting mechanism 211 is disposed on the working platform 201 downstream of the cathode pole piece cleaning mechanism 210 for die-cutting the cathode pole piece 103 at the side edge of the cathode tab receiving groove 1033 to form a cathode penetrating the cathode pole piece 103.
  • the pole piece die cuts the notch 1034.
  • the cathode tab supply mechanism 212 is disposed on the working platform 201, downstream of the cathode pole piece die cutting mechanism 211, and is wound with a cathode tab 104 for cutting the cathode of the cathode pole piece 103 of the cathode pole piece die-cut notch 1034.
  • the tab housing recess 1033 provides a cathode tab 104 for receiving the cathode tab 104 within the cathode tab receiving recess 1033.
  • the cathode tab connection mechanism 213 is disposed on the working platform 201 and is located downstream of the cathode pole piece die cutting mechanism 211 for receiving the cathode of the cathode tab 104 and the cathode tab receiving recess 1033 of the cathode tab receiving recess 1033.
  • the current collector 1031 is electrically connected and fixed.
  • the cathode pole piece transporting mechanism 214 is disposed on the working platform 201 for sequentially passing the cathode pole piece 103 unwound from the cathode pole piece unwinding roll 209 through the cathode pole piece cleaning mechanism 210 and the cathode pole piece die cutting machine.
  • the structure 211 and the cathode tab connection mechanism 213 are transported to the winding mechanism 202.
  • the first release film unwinding roller 215A is disposed on the work platform 201, and a separator 105 is wound.
  • the second release film unwinding roller 215B is disposed on the work platform 201, and another separation film 105 is wound.
  • the first isolating film transporting mechanism 216A is disposed on the working platform 201, and the corresponding isolating film 105 for unwinding the first isolating film unwinding roller 215A is sent to the winding mechanism 202, so that the secondary battery cells are wound and formed.
  • the separator 105 is spaced between the anode pole piece 101 and the cathode pole piece 103.
  • the second isolation film transport mechanism 216B is disposed on the work platform 201 for transporting the corresponding isolation film 105 unwound from the second release film unwinding roller 215B to the winding mechanism 202, so that the secondary battery cells are wound and formed.
  • the corresponding isolation film 105 is spaced between the anode pole piece 101 and the cathode pole piece 103.
  • the connection mechanism 213, the cathode pole piece transport mechanism 214, the first isolating film unwinding roller 215A, the second isolating film unwinding roller 215B, the first isolating film transporting mechanism 216A, and the first isolating film transporting mechanism 216B are integrated in one worktable 201 In the above, the volume of the secondary battery cell winding forming system 2 is reduced, the occupation space of the plant is saved, and the
  • the anode tab receiving recess 1013 and the anode mating recess 1015 are respectively cleaned on both sides of the anode pole piece 101, and the anode pole piece transport mechanism 208 can change the transmission orientation of the anode pole piece 101 by guiding. The effect of double-sided cleaning.
  • the cathode tab receiving recess 1033 and the cathode mating recess 1035 are respectively cleaned on both sides of the cathode pole piece 103, and the cathode pole piece transport mechanism 214 can change the transmission orientation of the cathode pole piece 103 by guiding. The effect of double-sided cleaning.
  • the secondary battery cell winding forming system 2 further includes a central control mechanism 217, which is communicatively coupled.
  • the control is selected from the group consisting of an anode pole piece unwinding roll 203, an anode pole piece cleaning mechanism 204, an anode pole piece die cutting mechanism 205, an anode tab supply mechanism 206, an anode tab attachment mechanism 207, a cathode pole piece unwinding roll 209, and a cathode pole.
  • the secondary battery cell winding forming system 2 further includes: a first cathode pole piece coating
  • the mechanism 218A is disposed on the working platform 201 and is located downstream of the cathode tab connection mechanism 213 for attaching the first insulating tape T1 to the cathode tab receiving recess 1033 of the cathode tab 104; and the second cathode pole piece pasting
  • the mechanism 218B is disposed on the working platform 201 between the first cathode pole piece applicator mechanism 218A and the winding mechanism 202 for the cathode diaphragm 1032 and the anode tab receiving recess after the secondary battery cell 1 is wound and formed.
  • the second insulating tape T2 is attached to the portion of the groove 1013 that is aligned.
  • the anode pole piece cleaning mechanism 204 is two, and one anode pole piece cleaning mechanism 204 is used for the anode pole piece.
  • the anode tabs receiving recesses 1013 on the bottom side of the anode current collector 1011 and the anode side as the anode diaphragm 1012 are cleaned on the other side, and the other anode pole piece cleaning mechanism 204 is used to clean the bottom anode set on the anode pole piece 101.
  • the fluid 1011 and the circumferential side are the anode diaphragm 1012 and are located on the opposite side of the anode tab receiving recess 1013.
  • the anode mating recess 1015 Referring to FIG. 1 and FIG. 3, in the embodiment, the second cathode tab is pasted.
  • the mechanism 218B is also used to attach a third insulating tape T3 to a portion of the cathode diaphragm 1032 that is aligned with the anode mating recess 1015.
  • the cathode pole piece cleaning mechanism 210 is two, and one cathode pole piece cleaning mechanism 210 is used for the cathode pole piece.
  • 103 is cleaned from the bottom of the cathodic current collector 1031 and the cathode side of the cathode diaphragm 1032 is received, and the other cathode piece cleaning mechanism 210 is used for cleaning the bottom of the cathode piece 103 as a cathode set.
  • the fluid 1031 and the circumferential side are the cathode diaphragm 1032 and are located on the back side of the cathode tab receiving recess 1033.
  • the cathode mating recess 1035 Referring to FIG. 1 and FIG. 3, in the embodiment, the first cathode pole piece is glued.
  • the mechanism 218A is also used to affix the fourth insulating tape T4 to the cathode mating recess 1035.
  • the anode pole piece cleaning mechanism 204 is two, and one anode pole piece cleaning mechanism 204 is used for the anode pole piece.
  • 101 cleans the anode which is the anode current collector 1011 at the bottom and the anode membrane 1012 on the circumferential side.
  • the tabs receive the recess 1013, and the other anode tab cleaning mechanism 204 is used to clean the anode pad 101 on the anode pad 101 and the anode side as the anode pad 1012 and on the anode tab receiving recess 1013.
  • the anode pairing recess 1015 is opposite to the back side; referring to FIG.
  • the cathode pole piece cleaning mechanism 210 is two, and one cathode pole piece cleaning mechanism 210 is used for cleaning the bottom of the cathode pole piece 103 as a cathode.
  • the current collector 1031 is on the circumference side of the cathode tab receiving recess 1033 of the cathode diaphragm 1032, and the other cathode pole piece cleaning mechanism 210 is used for cleaning the cathode pole piece 103 to the bottom as the cathode current collector 1031 and the peripheral side as the cathode.
  • the diaphragm 1032 is located on the opposite side of the cathode tab recess 1033 of the cathode tab receiving recess 1033.
  • the first cathode tab attach mechanism 218A is also used at the cathode.
  • the mating recess 1035 is pasted with a fourth insulating tape T4;
  • the second cathode tab attaching mechanism 218B is also used to attach a third insulating tape T3 to a portion where the cathode diaphragm 1032 is aligned with the anode mating recess 1015.
  • the secondary battery cell winding forming system 2 further includes: a plurality of anode pole piece sensing mechanisms 219, which are provided On the working platform 201, and communicatively connected to the central control mechanism 217, and starting from the anode pole piece unwinding roller 203 of the anode pole piece 101 via the anode pole piece cleaning mechanism 204, the anode pole piece die cutting mechanism 205, the anode tab Connecting the mechanism 207 to the conveying path of the winding mechanism 202 to sense the position of the anode pole piece 101 on the conveying path; the plurality of anode pole piece correcting mechanisms 220 are disposed on the working platform 201, and are communicably connected to the central control mechanism 217, and the conveying path of the anode pole piece 101 from the anode pole piece unwinding roller 203 via the anode pole piece cleaning mechanism 204, the anode pole piece die cutting mechanism 205
  • the secondary battery cell winding forming system 2 further includes: a plurality of cathode pole piece sensing mechanisms 221, which are provided On the working platform 201, and communicatively connected to the central control mechanism 217, and starting from the cathode pole piece unwinding roller 209 of the cathode pole piece 103 via the cathode pole piece cleaning mechanism 210, the cathode pole piece die cutting mechanism 211, the cathode tab
  • the connecting mechanism 213 is connected to the conveying path of the winding mechanism 202 to sense the position of the cathode pole piece 103 on the conveying path; the plurality of cathode pole piece correcting mechanisms 222 are disposed on the working platform 201, and are communicably connected to the central control mechanism.
  • the secondary battery cell winding forming system 2 further includes: a plurality of isolation film sensing mechanisms 223 disposed on The working platform 201 is communicably connected to the central control mechanism 217, respectively, in a transport path from the first release film unwinding roller 215A to the winding mechanism 202 corresponding to the separator 105, and from the second release film unwinding roller 215B to the winding.
  • the transport path of the mechanism 202 is sensed to correspond to the position of the isolation diaphragm 105 on the transport path.
  • Both the 215A and the second release film unwinding roller 215B are capable of expanding and contracting in a direction perpendicular to the work platform 201.
  • the first release film unwinding roller 215A and the second release film unwinding roller 215B are stretched and contracted in a direction perpendicular to the working platform 201, and can be corrected by the isolation film sensing mechanism 223, so that the release of the separator does not increase the separate isolation film correcting mechanism.
  • the anode pole piece cleaning mechanism 204 includes an anode pole piece laser cleaning system 2041 for passing the anode pole
  • the anode film 1012 of the sheet 101 is correspondingly cleaned
  • the anode pole piece dust removing mechanism 2042 is used for removing the anode film 1012 particles generated during the cleaning by the anode pole piece laser cleaning system 2041
  • the anode pole piece adsorption cooling auxiliary platform 2043 is The anode pole piece 101 passing through the anode pole piece laser cleaning system 2041 is adsorbed and cooled.
  • the anode pole piece adsorption cooling auxiliary platform 2043 may be vacuum suction.
  • the cathode pole piece cleaning mechanism 210 includes a cathode pole piece laser cleaning system 2101 for passing the cathode pole
  • the cathode diaphragm 1032 of the sheet 103 is correspondingly cleaned
  • the cathode pole piece dust removing mechanism 2102 is configured to remove the cathode diaphragm 1032 particles generated when the cathode pole piece laser cleaning system 2101 is cleaned
  • the cathode pole piece adsorption cooling auxiliary platform 2103 is The cathode pole piece 103 passing through the cathode pole piece laser cleaning system 2101 is adsorbed and cooled.
  • the cathode pole piece adsorption cooling auxiliary stage 2103 may be vacuum suction.
  • the anode pole piece die cutting mechanism 205 includes: an anode pole piece die-cutting punch mechanism 2051; an anode pole piece die-cutting die mechanism 2052, which cooperates with the anode pole piece die-cutting punch mechanism 2051 to be in the anode pole piece 101.
  • the anode pole piece 101 is die-cut at the side edge of the anode tab receiving groove 1013 through the anode pole piece die cutting mechanism 205 to form the anode pole piece die-cut notch 1014 penetrating the anode pole piece 101; and the anode pole piece die-cutting waste A collecting mechanism 2053 is configured to collect the scrap of the die-cut anode pole piece 101.
  • the cathode pole piece die cutting mechanism 211 includes: a cathode pole piece die-cutting punch mechanism 2111; a cathode pole piece die
  • the die cutter mechanism 2112 cooperates with the cathode pole piece die-cutting punch mechanism 2111 to die-cut the cathode pole piece at the side edge of the cathode tab receiving groove 1033 when the cathode pole piece 103 passes through the cathode pole piece die cutting mechanism 211.
  • cathode pole piece die-cut notch 1034 through the cathode pole piece 103; and a cathode pole piece die-cut waste collecting mechanism 2113 for collecting the waste of the die-cut cathode pole piece 103.
  • the anode tab connecting mechanism 207 includes: an anode tab welding mechanism 2071; and an anode tab welding mechanism 2072, mating with the anode tab electrode mechanism 2071 to weld the anode tab 102 to the anode current collector 1011 at the anode tab receiving recess 1013.
  • the cathode tab connecting mechanism 213 includes: a cathode tab welding head mechanism 2131; and a cathode tab welding mechanism 2132, mating with the cathode tab electrode mechanism 2131 to solder the cathode tab 104 to the cathode current collector 1031 at the cathode tab receiving recess 1033.
  • the winding mechanism 202 includes: a dust remover 2021 for feeding the anode pole piece 101 to the winding mechanism 202, The cathode pole piece 103 and the two separators 105 perform dust removal; and the winding device 2022 laminates the anode pole piece 101, the cathode pole piece 103, and the two separators 105 fed to the winding mechanism 202 to roll the winding mechanism 202
  • the corresponding separator 105 is spaced between the anode pole piece 101 and the cathode pole piece 103 after winding the secondary battery cells.
  • the anode pole piece transport mechanism 208 includes a fixed roller 2081 from which the anode pole piece 101 is driven
  • the main driving mechanism 2082 actively drives and transports the anode pole piece 101; and the main driving correcting mechanism 2083 is located upstream of the winding mechanism 202 and corrects the anode pole piece 101 entering the winding mechanism 202.
  • the cathode pole piece transport mechanism 214 includes a fixed roller 2141 from which the cathode pole piece 103 is driven
  • the main driving mechanism 2142 actively drives and transports the cathode pole piece 103; and the main driving correction mechanism 2143 is located upstream of the winding mechanism 202 and corrects the cathode pole piece 103 entering the winding mechanism 202.
  • the first separator transport mechanism 216A includes a fixed roller 216A1 that passively causes the corresponding separator 105 to be attached thereto.
  • the second separator transport mechanism 216B includes a fixed roller 216B1 that passively passes the corresponding separator 105 and transports it to the winding mechanism 202.
  • the secondary battery cell winding forming system 2 further includes: a plurality of anode pole piece dust removing portions 224, which are provided
  • the working platform 201 is communicably connected to the central control mechanism 217 and is in the anode pole piece 101 from the anode pole piece cleaning mechanism 204 via the anode pole piece die cutting mechanism 205 and the anode tab connecting mechanism 207 to the winding mechanism 202.
  • the anode film 1012 particles generated after cleaning and tab welding of the anode pole piece are removed.
  • the secondary battery cell winding forming system 2 further includes: a plurality of cathode pole piece dust removing portions 225, which are disposed
  • the working platform 201 is communicably connected to the central control mechanism 217 and is in the cathode pole piece 103 from the cathode pole piece cleaning mechanism 210 via the cathode pole piece die cutting mechanism 211 and the cathode tab connection mechanism 213 to the winding mechanism 202.
  • the cathode film 1032 particles generated after cleaning and tab welding of the cathode pole piece are removed.
  • a secondary battery cell 1 is prepared according to the secondary battery cell winding forming system 2 of the present invention by preparing a 335272 type battery core (the finished battery thickness is 3.3 mm, the width is 52 mm, and the length is 72 mm). Referring to FIGS.
  • the anode pole piece 101 and the cathode pole piece 103 are respectively cleaned at a predetermined position using an anode pole piece cleaning mechanism 204 and a cathode pole piece cleaning mechanism 210 to have a length of 12 mm (longitudinal direction L) and a width of 8 mm (
  • the anode tab receiving groove 1013 and the cathode tab receiving groove 1033 of the width direction W), and the anode tab receiving groove 1013 and the cathode tab are received
  • the burr area of the side edge of the recess 1033 is die-cut through the anode pole piece die cutting mechanism 205 and the cathode pole piece die cutting mechanism 211 to form an anode pole piece die-cut notch 1014 and a cathode pole piece die-cut notch 1034 having a length of 12 mm and a width of 3 mm.
  • the anode pole die-cut notch 1014 and the long side of the die-cut die notch coincide with the long sides of the corresponding anode tab receiving recess 1013 and the cathode tab receiving recess 1033, and the anode tab 102 having a width of 6 mm and
  • the cathode tabs 104 are respectively soldered in the anode tab receiving recess 1013 and the cathode tab receiving recess 1033.
  • the first insulating tape T1 is pasted on the cathode tab receiving recess 1033 of the cathode tab 104, and the anode tab 1010 is aligned with the anode tab receiving recess 1013 after the secondary battery cell 1 is wound.
  • the second insulating tape T2 is pasted on the portion, and after the secondary battery cell 1 is wound and formed, the third insulating tape T3 is pasted on the portion of the cathode film 1032 that is aligned with the anode mating recess 1015, and the fourth insulating layer is pasted in the cathode matching recess 1035.
  • the tape T4, the insulating tapes T1 to T4 have a thickness of 10 ⁇ m, wherein T1, T2, T3 and T4 have a length of 15 mm and a width of 24 mm.
  • the anode pole piece 101 is not attached with an insulating tape.
  • Comparative Example 1 was also prepared by preparing a 335272 type battery core (the finished battery thickness was 3.3 mm, the width was 52 mm, and the length was 72 mm), and a secondary battery was prepared using a conventional independent laser cleaning device and a welding and winding device in the prior art.
  • the battery core referring to FIG. 6, the burr area except the anode tab receiving groove 1013 and the cathode tab receiving groove 1033 is not die-cut, and T1, T2, T3 and T4 are 35 ⁇ m thick insulating tape, and the like. Same as Example 1.
  • Comparative Example 2 was also prepared by preparing a 335272 type battery core (the finished battery thickness was 3.3 mm, the width was 52 mm, and the length was 72 mm), except that T1, T2, T3, and T4 were made of 10 ⁇ m thick insulating tape, and the same comparative example. 1.
  • Example 1 Comparative Example 1 and Comparative Example 2, 20 soft-package lithium-ion battery samples were selected for capacity test, thickness measurement, and the tested soft-package lithium-ion battery samples were disassembled to observe short-circuit in the cleaning tank area. In the case, the results obtained are shown in Table 1.
  • the secondary battery cell of Example 1 prepared by the secondary battery cell winding forming system 2 of the present invention does not have an internal short circuit of the cell while ensuring a high average volumetric energy density; Although the ratio 1 has no internal short-circuit problem, the average volumetric energy density is significantly reduced due to the adhesion of thicker insulating rubber. Comparative example 2 also ensures a high average volumetric energy density, but a high ratio occurs. Internal short circuit cell.
  • the pole piece structure of the side edge burr area of the anode tab receiving groove 1013 and the anode tab receiving groove 1033 can be completely solved by the die cutting, and the inner short circuit problem caused by the burr can be completely solved.
  • the use of safety performance and the use of a secondary battery cell winding forming system 2 can reduce the overall manufacturing cost of the battery cells.

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Abstract

一种二次电池电芯（1）及其卷绕成型***（2）。该二次电池电芯（1）包括阳极极片（101）、阳极极耳（102）、阴极极片（103）、阴极极耳（104）以及隔离膜（105）。该二次电池电芯卷绕成型***（2）包括工作平台（201）、卷绕机构（202）、阳极极片放卷辊（203）、阳极极片清洗机构（204）、阳极极片模切机构（205）、阳极极耳供给机构（206）、阳极极耳连接机构（207）、阳极极片传输机构（208）、阴极极片放卷辊（209）、阴极极片清洗机构（210）、阴极极片模切机构（211）、阴极极耳供给机构（212）、阴极极耳连接机构（213）、阴极极片传输机构（214）、第一隔离膜放卷辊（215A）、第二隔离膜放卷辊（215B）、第一隔离膜传输机构（216A）以及第二隔离膜传输机构（216B）。该二次电池电芯卷绕成型***（2）制备的二次电池电芯（1），能有效的防止二次电池电芯（1）发生内短路，在保证高的能量密度的同时提高二次电池电芯（1）的安全性能。

Description

二次电池电芯及其卷绕成型*** 技术领域
本发明涉及二次电池领域，尤其涉及一种二次电池电芯及其卷绕成型***。
背景技术
锂离子电池(为二次电池的一种)在电子产品、汽车和电动车、航空航天、微型机电以及储能等领域均有广泛的应用。随着应用环境及条件趋向复杂化及苛刻化，对锂离子电池的使用安全性能、能量密度以及生产成本提出了更高的要求。
目前已有技术通过在极片上开设凹槽，将极耳焊接在凹槽内，从而达到提升能量密度的目的，但现阶段该工艺是分别由独立的激光清洗设备和焊接卷绕设备实现的，这些设备的综合成本及厂房占用空间较大，导致整体锂电池的生产成本比较高；并且在极片上由激光清洗出的凹槽边缘因存在焦距波动偏差引发的过热穿孔或烧损，造成该凹槽边缘的集流体上形成较多毛刺，如不经处理直接将此带有毛刺的极片制备成电芯则会存在毛刺刺穿隔离膜发生内短路甚至着火等严重的安全隐患，现有技术中通过在凹槽中贴盖厚胶纸来防止毛刺刺穿隔离膜，然而这势必会增加电芯厚度从而导致能量密度的损失。
发明内容
鉴于背景技术中存在的问题，本发明的目的在于提供一种二次电池电芯，其能在提高二次电池电芯的能量密度的同时防止二次电池电芯发生内短路，提高二次电池电芯的安全性能。
本发明的另一目的在于提供一种二次电池电芯卷绕成形***，其能减小二次电池电芯卷绕成型***的体积，节省厂房的占用空间，降低二次电池电芯的生产成本，并提高制备的二次电池电芯的能量密度和安全性能。
为了实现上述目的，在第一方面，本发明提供了一种二次电池电芯，其包括阳极极片、阳极极耳、阴极极片、阴极极耳以及隔离膜。
阳极极片包括：阳极集流体；以及阳极膜片，设置在阳极集流体的表面。
阴极极片包括：阴极集流体；以及阴极膜片，设置在阴极集流体的表面。
隔离膜设置于阳极极片和阴极极片之间。
阳极极片形成有：阳极极耳收容凹槽，底部为阳极集流体而周侧为阳极膜片，阳极极耳收容于阳极极耳收容凹槽内并电连接于阳极极耳收容凹槽处的阳极集流体。
阴极极片形成有：阴极极耳收容凹槽，底部为阴极集流体而周侧为阴极膜片，阴极极耳收容于阴极极耳收容凹槽内并电连接于阴极极耳收容凹槽处的阴极集流体。
阳极极片还形成有：阳极极片模切缺口，位于阳极极耳收容凹槽的侧缘且贯穿阳极极片。
阴极极片还形成有：阴极极片模切缺口，位于阴极极耳收容凹槽的侧缘且贯穿阴极极片。
为了实现上述目的，在第二方面，本发明提供了一种二次电池电芯卷绕成型***，其包括工作平台、卷绕机构、阳极极片放卷辊、阳极极片清洗机构、阳极极片模切机构、阳极极耳供给机构、阳极极耳连接机构、阳极极片传输机构、阴极极片放卷辊、阴极极片清洗机构、阴极极片模切机构、阴极极耳供给机构、阴极极耳连接机构、阴极极片传输机构、第一隔离膜放卷辊、第二隔离膜放卷辊、第一隔离膜传输机构以及第二隔离膜传输机构。
工作平台固定不动。
卷绕机构设置于工作平台。
阳极极片放卷辊设置于工作平台，卷绕有阳极极片，阳极极片包括：阳极集流体；以及阳极膜片，设置在阳极集流体的表面。
阳极极片清洗机构设置于工作平台，位于阳极极片放卷辊下游，用于在阳极极片上清洗出底部为阳极集流体而周侧为阳极膜片的阳极极耳收容凹槽。
阳极极片模切机构设置于工作平台，位于阳极极片清洗机构下游，用于在阳极极耳收容凹槽的侧缘处模切阳极极片而形成贯穿阳极极片的阳极极 片模切缺口。
阳极极耳供给机构设置于工作平台，位于阳极极片模切机构下游，卷绕有阳极极耳，用于向阳极极片模切缺口的阳极极片的阳极极耳收容凹槽提供阳极极耳，以使阳极极耳收容于阳极极耳收容凹槽内。
阳极极耳连接机构设置于工作平台，位于阳极极片模切机构下游，用于将收容于阳极极耳收容凹槽的阳极极耳与阳极极耳收容凹槽处的阳极集流体电连接固定。
阳极极片传输机构设置于工作平台，用于将从阳极极片放卷辊放卷的阳极极片依次通过阳极极片清洗机构、阳极极片模切机构、阳极极耳连接机构而输送至卷绕机构。
阴极极片放卷辊设置于工作平台，卷绕有阴极极片，阴极极片包括：阴极集流体；以及阴极膜片，设置在阴极集流体的表面。
阴极极片清洗机构设置于工作平台，位于阴极极片放卷辊下游，用于在阴极极片上清洗出底部为阴极集流体而周侧为阴极膜片的阴极极耳收容凹槽。
阴极极片模切机构设置于工作平台，位于阴极极片清洗机构下游，用于在阴极极耳收容凹槽侧缘处模切阴极极片而形成贯穿阴极极片的阴极极片模切缺口。
阴极极耳供给机构设置于工作平台，位于阴极极片模切机构下游，卷绕有阴极极耳，用于向模切出阴极极片模切缺口的阴极极片的阴极极耳收容凹槽提供阴极极耳，以使阴极极耳收容于阴极极耳收容凹槽内。
阴极极耳连接机构设置于工作平台，位于阴极极片模切机构下游，用于将收容于阴极极耳收容凹槽的阴极极耳与阴极极耳收容凹槽处的阴极集流体电连接固定。
阴极极片传输机构设置于工作平台，用于将从阴极极片放卷辊放卷的阴极极片依次通过阴极极片清洗机构、阴极极片模切机构、阴极极耳连接机构而输送至卷绕机构。
第一隔离膜放卷辊设置于工作平台，卷绕有一隔离膜。
第二隔离膜放卷辊设置于工作平台，卷绕有另一隔离膜。
第一隔离膜传输机构设置于工作平台，用于将第一隔离膜放卷辊放卷的 对应隔离膜输送至卷绕机构，以使二次电池电芯卷绕成型后对应隔离膜间隔在阳极极片和阴极极片之间。
第二隔离膜传输机构设置于工作平台，用于将从第二隔离膜放卷辊放卷的对应隔离膜输送至卷绕机构，以使二次电池电芯卷绕成型后对应隔离膜间隔在阳极极片和阴极极片之间。
本发明的有益效果如下：
在根据本发明的二次电池电芯中，阳极极耳收容于阳极极耳收容凹槽，阴极极耳收容于阴极极耳收容凹槽，有效提高了二次电池电芯的能量密度，而阳极极片模切缺口能够去除阳极极耳收容凹槽在形成过程中边缘部分的集流体上形成的毛刺，同时阴极极片模切缺口能有效去除阴极极耳收容凹槽在形成过程中边缘部分的集流体上形成的毛刺，有效地防止二次电池电芯发生内短路，从而在保证高的能量密度的同时提高二次电池电芯的安全性能。
在根据本发明的二次电池电芯卷绕成型***中，卷绕机构、阳极极片放卷辊、阳极极片清洗机构、阳极极片模切机构、阳极极耳供给机构、阳极极耳连接机构、阳极极片传输机构、阴极极片放卷辊、阴极极片清洗机构、阴极极片模切机构、阴极极耳给机构、阴极极耳连接接机构、阴极极片传输机构、第一隔离膜放卷辊、第二隔离膜放卷辊、第一隔离膜传输机构以及第一隔离膜传输机构集成在一个工作台上，减小二次电池电芯卷绕成型***的体积，节省厂房的占用空间，降低二次电池电芯的生产成本；阳极极片模切机构能够去除阳极极片清洗机构清洗出的阳极极耳收容凹槽边缘部分的集流体上的毛刺，阴极极片模切机构能够去除阴极极片清洗机构清洗出的阴极极耳收容凹槽边缘部分的集流体上的毛刺，有效地防止制备出的二次电池电芯发生内短路，提高生产的二次电池电芯的安全性能。
附图说明
图1为本发明的二次电池电芯卷绕成型***的结构示意图。
图2为本发明的二次电池电芯的阳极极片与极耳焊接后的示意图，其中图(a)为阳极极片与极耳焊接后的剖视图，图(b)为图(a)所示阳极极片的俯视图。
图3为本发明的二次电池电芯的阴极极片与极耳焊接后的示意图，其中 图(a)为阴极极片与极耳焊接后的剖视图，图(b)为图(a)所示阴极极片的仰视图。
图4为本发明的二次电池电芯的极片模切过程示意图，其中图(a)为阳极极片模切过程示意图，图(b)为阴极极片模切过程示意图。
图5为本发明的二次电池电芯的极片示意图，其中图(a)为阳极极片示意图，图(b)为阴极极片示意图。
图6为现有技术二次电池电芯极片的示意图，其中图(a)为阳极极片的示意图，图(b)为阴极极片的示意图。
其中，附图标记说明如下：
1 二次电池电芯
101 阳极极片
1011 阳极集流体
1012 阳极膜片
1013 阳极极耳收容凹槽
1014 阳极极片模切缺口
1015 阳极配对凹部
102 阳极极耳
103 阴极极片
1031 阴极集流体
1032 阴极膜片
1033 阴极极耳收容凹槽
1034 阴极极片模切缺口
1035 阴极配对凹部
104 阴极极耳
105 隔离膜
2 二次电池电芯卷绕成型***
201 工作平台
202 卷绕机构
2021 除尘器
2022 卷绕装置
203 阳极极片放卷辊
204 阳极极片清洗机构
2041 阳极极片激光清洗***
2042 阳极极片除尘机构
2043 阳极极片吸附冷却辅助平台
205 阳极极片模切机构
2051 阳极极片模切凸模机构
2052 阳极极片模切凹模机构
2053 阳极极片模切废料收集机构
206 阳极极耳供给机构
207 阳极极耳连接机构
2071 阳极极耳焊头机构
2072 阳极极耳焊座机构
208 阳极极片传输机构
2081 固定辊
2082 主驱动机构
2083 主驱动纠偏机构
209 阴极极片放卷辊
210 阴极极片清洗机构
2101 阴极极片激光清洗***
2102 阴极极片除尘机构
2103 阴极极片吸附冷却辅助平台
211 阴极极片模切机构
2111 阴极极片模切凸模机构
2112 阴极极片模切凹模机构
2113 阴极极片模切废料收集机构
212 阴极极耳供给机构
213 阴极极耳连接机构
2131 阴极极耳焊头机构
2132 阴极极耳焊座机构
214 阴极极片传输机构
2141 固定辊
2142 主驱动机构
2143 主驱动纠偏机构
215A 第一隔离膜放卷辊
215B 第二隔离膜放卷辊
216A 第一隔离膜传输机构
216A1 固定辊
216B 第二隔离膜传输机构
216B1 固定辊
217 中心控制机构
218A 第一阴极极片贴胶机构
218B 第二阴极极片贴胶机构
219 阳极极片感应机构
220 阳极极片纠偏机构
221 阴极极片感应机构
222 阴极极片纠偏机构
223 隔离膜感应机构
224 阳极极片除尘部
225 阴极极片除尘部
T1 第一绝缘胶带
T2 第二绝缘胶带
T3 第三绝缘胶带
T4 第四绝缘胶带
L 长度方向
W 宽度方向
具体实施方式
下面参照附图来详细说明根据本发明的二次电池电芯及其卷绕成型***。
首先说明根据本发明第一方面的二次电池电芯。
参照图2至图5，根据本发明的二次电池电芯1包括阳极极片101、阳极极耳102、阴极极片103、阴极极耳104以及隔离膜105。
阳极极片101包括：阳极集流体1011；以及阳极膜片1012，设置在阳极集流体1011的表面。
阴极极片103包括：阴极集流体1031；以及阴极膜片1032，设置在阴极集流体1031的表面。
隔离膜105设置于阳极极片101和阴极极片103之间。
阳极极片101形成有：阳极极耳收容凹槽1013，底部为阳极集流体1011而周侧为阳极膜片1012，阳极极耳102收容于阳极极耳收容凹槽1013内并电连接于阳极极耳收容凹槽1013处的阳极集流体1011。
阴极极片103形成有：阴极极耳收容凹槽1033，底部为阴极集流体1031而周侧为阴极膜片1032，阴极极耳104收容于阴极极耳收容凹槽1033内并电连接于阴极极耳收容凹槽1033处的阴极集流体1031。
阳极极片101还形成有：阳极极片模切缺口1014，位于阳极极耳收容凹槽1013的侧缘且贯穿阳极极片101。
阴极极片103还形成有：阴极极片模切缺口1034，位于阴极极耳收容凹槽1033的侧缘且贯穿阴极极片103。
在根据本发明的二次电池电芯1中，阳极极耳102收容于阳极极耳收容凹槽1013，阴极极耳104收容于阴极极耳收容凹槽1033，有效提高了二次电池电芯1的能量密度；阳极极片模切缺口1014能够去除阳极极耳收容凹槽1013在形成过程中边缘部分的集流体1011上形成的毛刺，阴极极片模切缺口1034能有效去除阴极极耳收容凹槽1033在形成过程中边缘部分的集流体1031上形成的毛刺，从而有效地防止二次电池电芯1发生内短路，进而在保证高的能量密度的同时提高二次电池电芯1的安全性能。
在根据本发明的二次电池电芯1中，二次电池电芯1为卷绕式电芯。
在根据本发明的二次电池电芯1中，参照图5(a)，在一实施例中，阳极极片模切缺口1014在长度方向L的长度可为阳极极耳收容凹槽1013长度的0.9～1.2倍；阳极极片模切缺口1014在宽度方向W的宽度可为阳极极耳 收容凹槽1013宽度的0.2～0.8倍。
在根据本发明的二次电池电芯1中，参照图5(b)，在一实施例中，阴极极片模切缺口1034在长度方向L的长度可为阴极极耳收容凹槽1033长度的0.9～1.2倍；阴极极片模切缺口1034在宽度方向W的宽度可为阴极极耳收容凹槽1033宽度的0.2～0.8倍。
在根据本发明的二次电池电芯1中，参照图2，在一实施例中，阳极极片101上可不粘贴绝缘胶带T。在阳极极片101上粘贴绝缘胶带T并不能提高二次电池电芯1，反而可能会增加二次电池电芯1厚度，降低二次电池电芯1的能量密度。
在根据本发明的二次电池电芯1中，参照图3，在一实施例中，二次电池电芯1还包括：第一绝缘胶带T1，粘贴在已收容阴极极耳104的阴极极耳收容凹槽1033处；以及第二绝缘胶带T2，粘贴在二次电池电芯1卷绕成型后阴极膜片1032的与阳极极耳收容凹槽1013对位的部位。由于粘贴了第二绝缘胶带T2，减少了向阳极极耳102游离的阴极膜片1032的阴极活性物质，减少了阴极膜片1032的阴极活性物质游离扩散至对位的阳极极耳102处，进而能减轻在二次电池充放电过程中阴极膜片1032的阴极活性物质富集在阳极极耳102处，最终减轻了阳极极耳102处出现析出阴极活性物质的问题，同时避免阳极极耳102处的毛刺刺穿隔离膜105时阳极极耳102与阴极极片103接触发生内短路。
在根据本发明的二次电池电芯1中，参照图2(a)，在一实施例中，阳极极片101还形成有阳极配对凹部1015，底部为阳极集流体1011而周侧为阳极膜片1012，位于阳极极耳收容凹槽1013的正对背侧；参照图3(a)和图3(b)，在本实施例中二次电池电芯1还包括：第三绝缘胶带T3，粘贴在二次电池电芯1卷绕成型后阴极膜片1032的与阳极配对凹部1015对位的部位。
在根据本发明的二次电池电芯1中，参照图3(a)，在一实施例中，阴极极片103还形成有阴极配对凹部1035，底部为阴极集流体1031而周侧为阴极膜片1032，位于阴极极耳收容凹槽1033的正对背侧；参照图3(a)和图3(b)，在本实施例中，二次电池电芯1还包括：第四绝缘胶带T4，粘贴在阴极配对凹部1035。
在根据本发明的二次电池电芯1中，在一实施例中，阳极极片101还形成有阳极配对凹部1015，底部为阳极集流体1011而周侧为阳极膜片1012，位于阳极极耳收容凹槽1013的正对背侧，如图2(a)所示；阴极极片103还形成有阴极配对凹部1035，底部为阴极集流体1031而周侧为阴极膜片1032，位于阴极极耳收容凹槽1033的正对背侧，如图3(a)所示。参照图3(a)和图3(b)，在本实施例中，二次电池电芯1还包括：第三绝缘胶带T3，粘贴在二次电池电芯1卷绕成型后阴极膜片1032的与阳极配对凹部1015对位的部位；以及第四绝缘胶带T4，粘贴在阴极配对凹部1035。
在根据本发明的二次电池电芯1中，第一绝缘胶带T1、第二绝缘胶带T2、第三绝缘胶带T3以及第四绝缘胶带T4为单面绝缘胶带或双面绝缘胶带。当采用双面绝缘胶带，双面绝缘胶带粘接区域比采用单面绝缘胶带时更紧密，从而使得二次电池电芯的整体性加强，从而避免二次电池电芯在整形工序以及二次电池充放电膨胀后该区域***成为最大变形区。
其次说明根据本发明第二方面的二次电池电芯卷绕成型***。
参照图1，根据本发明的二次电池电芯卷绕成型***包括工作平台201、卷绕机构202、阳极极片放卷辊203、阳极极片清洗机构204、阳极极片模切机构205、阳极极耳供给机构206、阳极极耳连接机构207、阳极极片传输机构208、阴极极片放卷辊209、阴极极片清洗机构210、阴极极片模切机构211、阴极极耳供给机构212、阴极极耳连接机构213、阴极极片传输机构214、第一隔离膜放卷辊215A、第二隔离膜放卷辊215B、第一隔离膜传输机构216A以及第二隔离膜传输机构216B。
工作平台201固定不动。
卷绕机构202设置于工作平台201。
阳极极片放卷辊203设置于工作平台201，卷绕有阳极极片101，阳极极片101包括：阳极集流体1011；以及阳极膜片1012，设置在阳极集流体1011的表面。
阳极极片清洗机构204设置于工作平台201，位于阳极极片放卷辊203下游，用于在阳极极片101上清洗出底部为阳极集流体1011而周侧为阳极膜片1012的阳极极耳收容凹槽1013。
阳极极片模切机构205设置于工作平台201，位于阳极极片清洗机构204下游，用于在阳极极耳收容凹槽1013的侧缘处模切阳极极片101而形成贯穿阳极极片101的阳极极片模切缺口1014；
阳极极耳供给机构206设置于工作平台201，位于阳极极片模切机构205下游，卷绕有阳极极耳102，用于向阳极极片模切缺口1014的阳极极片101的阳极极耳收容凹槽1013提供阳极极耳102，以使阳极极耳102收容于阳极极耳收容凹槽1013内。
阳极极耳连接机构207设置于工作平台201，位于阳极极片模切机构205下游，用于将收容于阳极极耳收容凹槽1013的阳极极耳102与阳极极耳收容凹槽1013处的阳极集流体1011电连接固定。
阳极极片传输机构208设置于工作平台201，用于将从阳极极片放卷辊203放卷的阳极极片101依次通过阳极极片清洗机构204、阳极极片模切机构205、阳极极耳连接机构207而输送至卷绕机构202。阴极极片放卷辊209设置于工作平台201，卷绕有阴极极片103，阴极极片103包括：阴极集流体1031；以及阴极膜片1032，设置在阴极集流体1031的表面。
阴极极片清洗机构210设置于工作平台201，位于阴极极片放卷辊209下游，用于在阴极极片103上清洗出底部为阴极集流体1031而周侧为阴极膜片1032的阴极极耳收容凹槽1033。
阴极极片模切机构211设置于工作平台201，位于阴极极片清洗机构210下游，用于在阴极极耳收容凹槽1033侧缘处模切阴极极片103而形成贯穿阴极极片103的阴极极片模切缺口1034。
阴极极耳供给机构212设置于工作平台201，位于阴极极片模切机构211下游，卷绕有阴极极耳104，用于向模切出阴极极片模切缺口1034的阴极极片103的阴极极耳收容凹槽1033提供阴极极耳104，以使阴极极耳104收容于阴极极耳收容凹槽1033内。
阴极极耳连接机构213设置于工作平台201，位于阴极极片模切机构211下游，用于将收容于阴极极耳收容凹槽1033的阴极极耳104与阴极极耳收容凹槽1033处的阴极集流体1031电连接固定。
阴极极片传输机构214设置于工作平台201，用于将从阴极极片放卷辊209放卷的阴极极片103依次通过阴极极片清洗机构210、阴极极片模切机 构211、阴极极耳连接机构213而输送至卷绕机构202。
第一隔离膜放卷辊215A设置于工作平台201，卷绕有一隔离膜105。
第二隔离膜放卷辊215B设置于工作平台201，卷绕有另一隔离膜105。
第一隔离膜传输机构216A设置于工作平台201，用于将第一隔离膜放卷辊215A放卷的对应隔离膜105输送至卷绕机构202，以使二次电池电芯卷绕成型后对应隔离膜105间隔在阳极极片101和阴极极片103之间。
第二隔离膜传输机构216B设置于工作平台201，用于将从第二隔离膜放卷辊215B放卷的对应隔离膜105输送至卷绕机构202，以使二次电池电芯卷绕成型后对应隔离膜105间隔在阳极极片101和阴极极片103之间。
在根据本发明的二次电池电芯卷绕成型***2中，卷绕机构202、阳极极片放卷辊203、阳极极片清洗机构204、阳极极片模切机构205、阳极极耳供给机构206、阳极极耳连接机构207、阳极极片传输机构208、阴极极片放卷辊209、阴极极片清洗机构210、阴极极片模切机构211、阴极极耳给机构212、阴极极耳连接接机构213、阴极极片传输机构214、第一隔离膜放卷辊215A、第二隔离膜放卷辊215B、第一隔离膜传输机构216A以及第一隔离膜传输机构216B集成在一个工作台201上，减小二次电池电芯卷绕成型***2的体积，节省厂房的占用空间，降低二次电池电芯1的生产成本；阳极极片模切机构205能够去除阳极极片清洗机构204清洗出的阳极极耳收容凹槽1013边缘部分的集流体1011上的毛刺，阴极极片模切机构211能够去除阴极极片清洗机构210清洗出的阴极极耳收容凹槽1033边缘部分的集流体1031上的毛刺，有效的防止制备出的二次电池电芯1发生内短路，提高生产的二次电池电芯1的安全性能。
在一实施例中，要在阳极极片101的两面分别清洗出阳极极耳收容凹槽1013和阳极配对凹部1015，而阳极极片传输机构208通过导向能够改变阳极极片101的传输方位，实现双面清洗的效果。
在一实施例中，要在阴极极片103的两面分别清洗出阴极极耳收容凹槽1033和阴极配对凹部1035，而阴极极片传输机构214能够通过导向改变阴极极片103的传输方位，实现双面清洗的效果。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，二次电池电芯卷绕成型***2还包括中心控制机构217，通信连接并 控制选自阳极极片放卷辊203、阳极极片清洗机构204、阳极极片模切机构205、阳极极耳供给机构206、阳极极耳连接机构207、阴极极片放卷辊209、阴极极片清洗机构210、阴极极片模切机构211、阴极极耳供给机构212、阴极极耳连接机构213及卷绕机构202中的至少一种。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1和图3，在一实施例中，二次电池电芯卷绕成型***2还包括：第一阴极极片贴胶机构218A，设置于工作平台201，位于阴极极耳连接机构213下游，用于在已收容阴极极耳104的阴极极耳收容凹槽1033粘贴第一绝缘胶带T1；以及第二阴极极片贴胶机构218B，设置于工作平台201，位于第一阴极极片贴胶机构218A与卷绕机构202之间，用于在二次电池电芯1卷绕成型后阴极膜片1032与阳极极耳收容凹槽1013对位的部位粘贴第二绝缘胶带T2。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极片清洗机构204为两个，一个阳极极片清洗机构204用于在阳极极片101上清洗出底部为阳极集流体1011而周侧为阳极膜片1012的阳极极耳收容凹槽1013，而另一个阳极极片清洗机构204用于在阳极极片101上清洗出底部为阳极集流体1011而周侧为阳极膜片1012且位于阳极极耳收容凹槽1013的正对背侧的阳极配对凹部1015；参照图1和图3，在本实施例中，第二阴极极片贴胶机构218B还用于在阴极膜片1032的与阳极配对凹部1015对位的部位粘贴第三绝缘胶带T3。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阴极极片清洗机构210为两个，一个阴极极片清洗机构210用于在阴极极片103上清洗出底部为阴极集流体1031而周侧为阴极膜片1032的阴极极耳收容凹槽1033，而另一个阴极极片清洗机构210用于在阴极极片103上清洗出底部为阴极集流体1031而周侧为阴极膜片1032且位于阴极极耳收容凹槽1033的正对背侧的阴极配对凹部1035；参照图1和图3，在本实施例中，第一阴极极片贴胶机构218A还用于在阴极配对凹部1035粘贴第四绝缘胶带T4。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极片清洗机构204为两个，一个阳极极片清洗机构204用于在阳极极片101上清洗出底部为阳极集流体1011而周侧为阳极膜片1012的阳极 极耳收容凹槽1013，而另一个阳极极片清洗机构204用于在阳极极片101上清洗出底部为阳极集流体1011而周侧为阳极膜片1012且位于阳极极耳收容凹槽1013的正对背侧的阳极配对凹部1015；参照图1，在本实施例中，阴极极片清洗机构210为两个，一个阴极极片清洗机构210用于在阴极极片103上清洗出底部为阴极集流体1031而周侧为阴极膜片1032的阴极极耳收容凹槽1033，而另一个阴极极片清洗机构210用于在阴极极片103上清洗出底部为阴极集流体1031而周侧为阴极膜片1032且位于阴极极耳收容凹槽1033的正对背侧的阴极配对凹部1035；参照图1和图3，在本实施例中，第一阴极极片贴胶机构218A还用于在阴极配对凹部1035粘贴第四绝缘胶带T4；第二阴极极片贴胶机构218B还用于在阴极膜片1032与阳极配对凹部1015对位的部位粘贴第三绝缘胶带T3。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，二次电池电芯卷绕成型***2还包括：多个阳极极片感应机构219，设置于工作平台201，且通信连接于中心控制机构217，并处于阳极极片101的从阳极极片放卷辊203起始经由阳极极片清洗机构204、阳极极片模切机构205、阳极极耳连接机构207而到卷绕机构202的输送路径上，以感测阳极极片101在输送路径上的位置；多个阳极极片纠偏机构220，设置于工作平台201，且通信连接于中心控制机构217，并处于阳极极片101的从阳极极片放卷辊203起始经由阳极极片清洗机构204、阳极极片模切机构205、阳极极耳连接机构207而到卷绕机构202的输送路径上，以对阳极极片101进行纠偏。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，二次电池电芯卷绕成型***2还包括：多个阴极极片感应机构221，设置于工作平台201，且通信连接于中心控制机构217，并处于阴极极片103的从阴极极片放卷辊209起始经由阴极极片清洗机构210、阴极极片模切机构211、阴极极耳连接机构213而到卷绕机构202的输送路径上，以感测阴极极片103在输送路径上的位置；多个阴极极片纠偏机构222，设置于工作平台201，且通信连接于中心控制机构217，并处于阴极极片103的从阴极极片放卷辊209起始经由阴极极片清洗机构210、阴极极片模切机构211、阴极极耳连接机构213而到卷绕机构202的输送路径上，以对阴极极片103 进行纠偏。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，二次电池电芯卷绕成型***2还包括：多个隔离膜感应机构223，设置于工作平台201，且通信连接于中心控制机构217，分别处于对应隔离膜105的从第一隔离膜放卷辊215A到卷绕机构202的输送路径以及从第二隔离膜放卷辊215B到卷绕机构202的输送路径上，以感测对应隔离膜105在输送路径上的位置。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极片放卷辊203、阴极极片放卷辊209、第一隔离膜放卷辊215A以及第二隔离膜放卷辊215B均能够沿垂直于工作平台201方向伸缩。第一隔离膜放卷辊215A以及第二隔离膜放卷辊215B沿垂直于工作平台201方向伸缩可以配合隔离膜感应机构223实现纠偏，所以隔离膜的放料没有增加单独的隔离膜纠偏机构。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极片清洗机构204包括：阳极极片激光清洗***2041，用于对经过的阳极极片101的阳极膜片1012对应进行清洗；阳极极片除尘机构2042，用于去除阳极极片激光清洗***2041进行清洗时产生的阳极膜片1012颗粒；以及阳极极片吸附冷却辅助平台2043，将吸附固定并冷却经过阳极极片激光清洗***2041的阳极极片101。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极片吸附冷却辅助平台2043可为抽真空吸附。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阴极极片清洗机构210包括：阴极极片激光清洗***2101，用于对经过的阴极极片103的阴极膜片1032对应进行清洗；阴极极片除尘机构2102，用于去除阴极极片激光清洗***2101进行清洗时产生的阴极膜片1032颗粒；以及阴极极片吸附冷却辅助平台2103，将吸附固定并冷却经过阴极极片激光清洗***2101的阴极极片103。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阴极极片吸附冷却辅助平台2103可为抽真空吸附。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施 例中，阳极极片模切机构205包括：阳极极片模切凸模机构2051；阳极极片模切凹模机构2052，与阳极极片模切凸模机构2051配合，以在阳极极片101经过阳极极片模切机构205时在阳极极耳收容凹槽1013的侧缘处模切阳极极片101而形成贯穿阳极极片101的阳极极片模切缺口1014；以及阳极极片模切废料收集机构2053，用于收集模切下来的阳极极片101的废料。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阴极极片模切机构211包括：阴极极片模切凸模机构2111；阴极极片模切凹模机构2112，与阴极极片模切凸模机构2111配合，以在阴极极片103经过阴极极片模切机构211时在阴极极耳收容凹槽1033的侧缘处模切阴极极片103而形成贯穿阴极极片103的阴极极片模切缺口1034；以及阴极极片模切废料收集机构2113，用于收集模切下来的阴极极片103的废料。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极耳连接机构207包括：阳极极耳焊头机构2071；以及阳极极耳焊座机构2072，与阳极极耳焊头机构2071配合，以将阳极极耳102焊接于阳极极耳收容凹槽1013处的阳极集流体1011。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阴极极耳连接机构213包括：阴极极耳焊头机构2131；以及阴极极耳焊座机构2132，与阴极极耳焊头机构2131配合，以将阴极极耳104焊接于阴极极耳收容凹槽1033处的阴极集流体1031。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，卷绕机构202包括：除尘器2021，对输送至卷绕机构202的阳极极片101、阴极极片103和两个隔离膜105进行除尘；以及卷绕装置2022，使输送至卷绕机构202的阳极极片101、阴极极片103和两个隔离膜105层叠为使卷绕机构202卷绕成型二次电池电芯后对应隔离膜105间隔在阳极极片101和阴极极片103之间。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阳极极片传输机构208包括：固定辊2081，从动地使阳极极片101从其上通过；主驱动机构2082，主动地带动并输送阳极极片101；以及主驱动纠偏机构2083，位于卷绕机构202上游并对进入卷绕机构202的阳极极片101进行纠偏。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，阴极极片传输机构214包括：固定辊2141，从动地使阴极极片103从其上通过；主驱动机构2142，主动地带动并输送阴极极片103；以及主驱动纠偏机构2143，位于卷绕机构202上游并对进入卷绕机构202的阴极极片103进行纠偏。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，第一隔离膜传输机构216A包括固定辊216A1，从动地使对应隔离膜105从其上通过并向卷绕机构202输送；第二隔离膜传输机构216B包括：固定辊216B1，从动地使对应隔离膜105从其上通过并向卷绕机构202输送。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，二次电池电芯卷绕成型***2还包括：多个阳极极片除尘部224，设置于工作平台201，且通信连接于中心控制机构217，并处于阳极极片101的从阳极极片清洗机构204经由阳极极片模切机构205、阳极极耳连接机构207而到卷绕机构202的输送路径上，以去除阳极极片经过清洗、极耳焊接后产生的阳极膜片1012颗粒。
在根据本发明的二次电池电芯卷绕成型***2中，参照图1，在一实施例中，二次电池电芯卷绕成型***2还包括：多个阴极极片除尘部225，设置于工作平台201，且通信连接于中心控制机构217，并处于阴极极片103的从阴极极片清洗机构210经由阴极极片模切机构211、阴极极耳连接机构213而到卷绕机构202的输送路径上，以去除阴极极片经过清洗、极耳焊接后产生的阴极膜片1032颗粒。
下面对使用本发明的二次电池电芯卷绕成型***2制备出的二次电池电芯的性能与现有技术中制备出的二次电池电芯的性能进行比较。
实施例1以制备335272型号电芯(成品电池厚度为3.3mm、宽度为52mm、长度为72mm)为例，根据本发明的二次电池电芯卷绕成型***2制备出二次电池电芯1，参照图2至图5，阳极极片101和阴极极片103预设位置上使用阳极极片清洗机构204和阴极极片清洗机构210分别清洗出长度12mm(沿长度方向L)、宽度8mm(宽度方向W)的阳极极耳收容凹槽1013和阴极极耳收容凹槽1033，并将阳极极耳收容凹槽1013和阴极极耳收 容凹槽1033侧缘的毛刺区经由阳极极片模切机构205和阴极极片模切机构211模切切除形成长度12mm、宽度3mm的阳极极片模切缺口1014和阴极极片模切缺口1034，阳极极片模切缺口1014和阴极极片模切缺口的长边与对应的阳极极耳收容凹槽1013和阴极极耳收容凹槽1033的长边重合，宽度为6mm的阳极极耳102和阴极极耳104分别被焊接于阳极极耳收容凹槽1013和阴极极耳收容凹槽1033中。在已收容阴极极耳104的阴极极耳收容凹槽1033上粘贴第一绝缘胶带T1、在二次电池电芯1卷绕成型后阴极膜片1032的与阳极极耳收容凹槽1013对位的部位粘贴第二绝缘胶带T2、在二次电池电芯1卷绕成型后阴极膜片1032的与阳极配对凹部1015对位的部位对应粘贴第三绝缘胶带T3以及在阴极配对凹部1035粘贴第四绝缘胶带T4，绝缘胶带T1至T4的厚度为10μm，其中T1、T2、T3和T4长度为15mm、宽度为24mm。阳极极片101不贴绝缘胶带。由此制备成本发明的一种实施例二次电池电芯结构。
对比例1同样以制备335272型号电芯(成品电池厚度为3.3mm、宽度为52mm、长度为72mm)为例，使用现有技术中常规独立的激光清洗设备和焊接卷绕设备制备出二次电池电芯，参照图6，除阳极极耳收容凹槽1013和阴极极耳收容凹槽1033侧缘的毛刺区没有被模切去除，T1、T2、T3以及T4采用35μm厚绝缘胶带之外，其他同实施例1。
对比例2同样以制备335272型号电芯(成品电池厚度为3.3mm、宽度为52mm、长度为72mm)为例，其中除T1、T2、T3以及T4采用10μm厚绝缘胶带之外，其他同对比例1。
在实施例1、对比例1及对比例2中分别选取20个软包装锂离子电池样品进行容量测试，厚度测量，并且对测试后的软包装锂离子电池样品进行拆解观察清洗槽位区内短路的情况，所得结果示如表1所示。
表1 实施例1与对比例1-2的测试结果
Figure PCTCN2015088638-appb-000001
从表1看出，采用本发明二次电池电芯卷绕成型***2制备的实施例1的二次电池电芯在保证较高的平均体积能量密度的同时没有电芯发生内短路；而对比例1虽同样没有电芯出现内短路问题，但因其粘贴较厚的绝缘胶导致平均体积能量密度明显降低；对比例2虽同样保证了较高的平均体积能量密度，但发生了高比率的内短路电芯。
由此可见，实施例1中，采用模切切除阳极极耳容纳凹槽1013和阳极极耳容纳凹槽1033侧缘毛刺区的极片结构能完全解决毛刺引发的内短路问题，提升电芯的使用安全性能，且采用二次电池电芯卷绕成型***2可降低电芯的综合制作成本。

Claims (35)

  1. 一种二次电池电芯(1)，包括：
    阳极极片(101)，包括：
    阳极集流体(1011)；以及
    阳极膜片(1012)，设置在阳极集流体(1011)的表面；
    阳极极耳(102)；
    阴极极片(103)，包括：
    阴极集流体(1031)；以及
    阴极膜片(1032)，设置在阴极集流体(1031)的表面；
    阴极极耳(104)；以及
    隔离膜(105)，设置于阳极极片(101)和阴极极片(103)之间；
    其中，
    阳极极片(101)形成有：
    阳极极耳收容凹槽(1013)，底部为阳极集流体(1011)而周侧为阳极膜片(1012)，阳极极耳(102)收容于阳极极耳收容凹槽(1013)内并电连接于阳极极耳收容凹槽(1013)处的阳极集流体(1011)；
    阴极极片(103)形成有：
    阴极极耳收容凹槽(1033)，底部为阴极集流体(1031)而周侧为阴极膜片(1032)，阴极极耳(104)收容于阴极极耳收容凹槽(1033)内并电连接于阴极极耳收容凹槽(1033)处的阴极集流体(1031)；
    其特征在于，
    阳极极片(101)还形成有：
    阳极极片模切缺口(1014)，位于阳极极耳收容凹槽(1013)的侧缘且贯穿阳极极片(101)；
    阴极极片(103)还形成有：
    阴极极片模切缺口(1034)，位于阴极极耳收容凹槽(1033)的侧缘且贯穿阴极极片(103)。
  2. 根据权利要求1所述的二次电池电芯(1)，其特征在于，所述二次电 池电芯(1)为卷绕式电芯。
  3. 根据权利要求1所述的二次电池电芯(1)，其特征在于，
    阳极极片模切缺口(1014)在长度方向(L)的长度为阳极极耳收容凹槽(1013)长度的0.9～1.2倍；
    阳极极片模切缺口(1014)在宽度方向(W)的宽度为阳极极耳收容凹槽(1013)宽度的0.2～0.8倍。
  4. 根据权利要求1所述的二次电池电芯(1)，其特征在于，
    阴极极片模切缺口(1034)在长度方向(L)的长度为阴极极耳收容凹槽(1033)长度的0.9～1.2倍；
    阴极极片模切缺口(1034)在宽度方向(W)的宽度为阴极极耳收容凹槽(1033)宽度的0.2～0.8倍。
  5. 根据权利要求1所述的二次电池电芯(1)，其特征在于，所述二次电池电芯(1)还包括：
    第一绝缘胶带(T1)，粘贴在已收容阴极极耳(104)的阴极极耳收容凹槽(1033)处；以及
    第二绝缘胶带(T2)，粘贴在二次电池电芯(1)卷绕成型后阴极膜片(1032)的与阳极极耳收容凹槽(1013)对位的部位。
  6. 根据权利要求5所述的二次电池电芯(1)，其特征在于，
    阳极极片(101)还形成有：阳极配对凹部(1015)，底部为阳极集流体(1011)而周侧为阳极膜片(1012)，位于阳极极耳收容凹槽(1013)的正对背侧；
    所述二次电池电芯(1)还包括：第三绝缘胶带(T3)，粘贴在二次电池电芯(1)卷绕成型后阴极膜片(1032)的与阳极配对凹部(1015)对位的部位。
  7. 根据权利要求5所述的二次电池电芯(1)，其特征在于，
    阴极极片(103)还形成有：阴极配对凹部(1035)，底部为阴极集流体(1031)而周侧为阴极膜片(1032)，位于阴极极耳收容凹槽(1033)的正对背侧；
    所述二次电池电芯(1)还包括：第四绝缘胶带(T4)，粘贴在阴极配对凹部(1035)。
  8. 根据权利要求5所述的二次电池电芯(1)，其特征在于，
    阳极极片(101)还形成有：阳极配对凹部(1015)，底部为阳极集流体(1011)而周侧为阳极膜片(1012)，位于阳极极耳收容凹槽(1013)的正对背侧；
    阴极极片(103)还形成有：阴极配对凹部(1035)，底部为阴极集流体(1031)而周侧为阴极膜片(1032)，位于阴极极耳收容凹槽(1033)的正对背侧；
    所述二次电池电芯(1)还包括：第三绝缘胶带(T3)，粘贴在二次电池电芯(1)卷绕成型后阴极膜片(1032)的与阳极配对凹部(1015)对位的部位；以及
    第四绝缘胶带(T4)，粘贴在阴极配对凹部(1035)。
  9. 根据权利要求8所述的二次电池电芯(1)，其特征在于，第一绝缘胶带(T1)、第二绝缘胶带(T2)、第三绝缘胶带(T3)以及第四绝缘胶带(T4)为单面绝缘胶带或双面绝缘胶带。
  10. 一种二次电池电芯卷绕成型***(2)，其特征在于，包括：
    工作平台(201)，固定不动；
    卷绕机构(202)，设置于工作平台(201)；
    阳极极片放卷辊(203)，设置于工作平台(201)，卷绕有阳极极片(101)，阳极极片(101)包括：阳极集流体(1011)；以及阳极膜片(1012)，设置在阳极集流体(1011)的表面；
    阳极极片清洗机构(204)，设置于工作平台(201)，位于阳极极片放卷辊(203)下游，用于在阳极极片(101)上清洗出底部为阳极集流体(1011) 而周侧为阳极膜片(1012)的阳极极耳收容凹槽(1013)；
    阳极极片模切机构(205)，设置于工作平台(201)，位于阳极极片清洗机构(204)下游，用于在阳极极耳收容凹槽(1013)的侧缘处模切阳极极片(101)而形成贯穿阳极极片(101)的阳极极片模切缺口(1014)；
    阳极极耳供给机构(206)，设置于工作平台(201)，位于阳极极片模切机构(205)下游，卷绕有阳极极耳(102)，用于向模切出阳极极片模切缺口(1014)的阳极极片(101)的阳极极耳收容凹槽(1013)提供阳极极耳(102)，以使阳极极耳(102)收容于阳极极耳收容凹槽(1013)内；
    阳极极耳连接机构(207)，设置于工作平台(201)，位于阳极极片模切机构(205)下游，用于将收容于阳极极耳收容凹槽(1013)的阳极极耳(102)与阳极极耳收容凹槽(1013)处的阳极集流体(1011)电连接固定；
    阳极极片传输机构(208)，设置于工作平台(201)，用于将从阳极极片放卷辊(203)放卷的阳极极片(101)依次通过阳极极片清洗机构(204)、阳极极片模切机构(205)、阳极极耳连接机构(207)而输送至卷绕机构(202)；
    阴极极片放卷辊(209)，设置于工作平台(201)，卷绕有阴极极片(103)，阴极极片(103)包括：阴极集流体(1031)；以及阴极膜片(1032)，设置在阴极集流体(1031)的表面；
    阴极极片清洗机构(210)，设置于工作平台(201)，位于阴极极片放卷辊(209)下游，用于在阴极极片(103)上清洗出底部为阴极集流体(1031)而周侧为阴极膜片(1032)的阴极极耳收容凹槽(1033)；
    阴极极片模切机构(211)，设置于工作平台(201)，位于阴极极片清洗机构(210)下游，用于在阴极极耳收容凹槽(1033)侧缘处模切阴极极片(103)而形成贯穿阴极极片(103)的阴极极片模切缺口(1034)；
    阴极极耳供给机构(212)，设置于工作平台(201)，位于阴极极片模切机构(211)下游，卷绕有阴极极耳(104)，用于向模切出阴极极片模切缺口(1034)的阴极极片(103)的阴极极耳收容凹槽(1033)提供阴极极耳(104)，以使阴极极耳(104)收容于阴极极耳收容凹槽(1033)内；
    阴极极耳连接机构(213)，设置于工作平台(201)，位于阴极极片模切机构(211)下游，用于将收容于阴极极耳收容凹槽(1033)的阴极极耳(104)与阴极极耳收容凹槽(1033)处的阴极集流体(1031)电连接固定；
    阴极极片传输机构(214)，设置于工作平台(201)，用于将从阴极极片放卷辊(209)放卷的阴极极片(103)依次通过阴极极片清洗机构(210)、阴极极片模切机构(211)、阴极极耳连接机构(213)而输送至卷绕机构(202)；
    第一隔离膜放卷辊(215A)，设置于工作平台(201)，卷绕有一隔离膜(105)；
    第二隔离膜放卷辊(215B)，设置于工作平台(201)，卷绕有另一隔离膜(105)；
    第一隔离膜传输机构(216A)，设置于工作平台(201)，用于将第一隔离膜放卷辊(215A)放卷的对应隔离膜(105)输送至卷绕机构(202)，以使二次电池电芯卷绕成型后对应隔离膜(105)间隔在阳极极片(101)和阴极极片(103)之间；以及
    第二隔离膜传输机构(216B)，设置于工作平台(201)，用于将第二隔离膜放卷辊(215B)放卷的对应隔离膜(105)输送至卷绕机构(202)，以使二次电池电芯卷绕成型后对应隔离膜(105)间隔在阳极极片(101)和阴极极片(103)之间。
  11. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，所述二次电池电芯卷绕成型***(2)还包括：
    中心控制机构(217)，通信连接并控制选自阳极极片放卷辊(203)、阳极极片清洗机构(204)、阳极极片模切机构(205)、阳极极耳供给机构(206)、阳极极耳连接机构(207)、阴极极片放卷辊(209)、阴极极片清洗机构(210)、阴极极片模切机构(211)、阴极极耳供给机构(212)、阴极极耳连接机构(213)及卷绕机构(202)中的至少一种。
  12. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，所述二次电池电芯卷绕成型***(2)还包括：
    第一阴极极片贴胶机构(218A)，设置于工作平台(201)，位于阴极极耳连接机构(213)下游，用于在已收容阴极极耳(104)的阴极极耳收容凹槽(1033)粘贴第一绝缘胶带(T1)；以及
    第二阴极极片贴胶机构(218B)，设置于工作平台(201)，位于第一 阴极极片贴胶机构(218A)与卷绕机构(202)之间，用于在二次电池电芯(1)卷绕成型后阴极膜片(1032)与阳极极耳收容凹槽(1013)对位的部位粘贴第二绝缘胶带(T2)。
  13. 根据权利要求12所述的二次电池电芯卷绕成型***(2)，其特征在于，
    阳极极片清洗机构(204)为两个，一个阳极极片清洗机构(204)用于在阳极极片(101)上清洗出底部为阳极集流体(1011)而周侧为阳极膜片(1012)的阳极极耳收容凹槽(1013)，而另一个阳极极片清洗机构(204)用于在阳极极片(101)上清洗出底部为阳极集流体(1011)而周侧为阳极膜片(1012)且位于阳极极耳收容凹槽(1013)的正对背侧的阳极配对凹部(1015)；
    第二阴极极片贴胶机构(218B)还用于在阴极膜片(1032)的与阳极配对凹部(1015)对位的部位粘贴第三绝缘胶带(T3)。
  14. 根据权利要求12所述的二次电池电芯卷绕成型***(2)，其特征在于，
    阴极极片清洗机构(210)为两个，一个阴极极片清洗机构(210)用于在阴极极片(103)上清洗出底部为阴极集流体(1031)而周侧为阴极膜片(1032)的阴极极耳收容凹槽(1033)，而另一个阴极极片清洗机构(210)用于在阴极极片(103)上清洗出底部为阴极集流体(1031)而周侧为阴极膜片(1032)且位于阴极极耳收容凹槽(1033)的正对背侧的阴极配对凹部(1035)；
    第一阴极极片贴胶机构(218A)还用于在阴极配对凹部(1035)粘贴第四绝缘胶带(T4)。
  15. 根据权利要求12所述的二次电池电芯卷绕成型***(2)，其特征在于，
    阳极极片清洗机构(204)为两个，一个阳极极片清洗机构(204)用于在阳极极片(101)上清洗出底部为阳极集流体(1011)而周侧为阳极膜片 (1012)的阳极极耳收容凹槽(1013)，而另一个阳极极片清洗机构(204)用于在阳极极片(101)上清洗出底部为阳极集流体(1011)而周侧为阳极膜片(1012)且位于阳极极耳收容凹槽(1013)的正对背侧的阳极配对凹部(1015)；
    阴极极片清洗机构(210)为两个，一个阴极极片清洗机构(210)用于在阴极极片(103)上清洗出底部为阴极集流体(1031)而周侧为阴极膜片(1032)的阴极极耳收容凹槽(1033)，而另一个阴极极片清洗机构(210)用于在阴极极片(103)上清洗出底部为阴极集流体(1031)而周侧为阴极膜片(1032)且位于阴极极耳收容凹槽(1033)的正对背侧的阴极配对凹部(1035)；
    第一阴极极片贴胶机构(218A)还用于在阴极配对凹部(1035)粘贴第四绝缘胶带(T4)；
    第二阴极极片贴胶机构(218B)还用于在阴极膜片(1032)与阳极配对凹部(1015)对位的部位粘贴第三绝缘胶带(T3)。
  16. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，二次电池电芯卷绕成型***(2)还包括：
    多个阳极极片感应机构(219)，设置于工作平台(201)，并处于阳极极片(101)的从阳极极片放卷辊(203)起始经由阳极极片清洗机构(204)、阳极极片模切机构(205)、阳极极耳连接机构(207)而到卷绕机构(202)的输送路径上，以感测阳极极片(101)在输送路径上的位置；
    多个阳极极片纠偏机构(220)，设置于工作平台(201)，并处于阳极极片(101)的从阳极极片放卷辊(203)起始经由阳极极片清洗机构(204)、阳极极片模切机构(205)、阳极极耳连接机构(207)而到卷绕机构(202)的输送路径上，以对阳极极片(101)进行纠偏。
  17. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，二次电池电芯卷绕成型***(2)还包括：
    多个阴极极片感应机构(221)，设置于工作平台(201)，并处于阴极极片(103)的从阴极极片放卷辊(209)起始经由阴极极片清洗机构(210)、 阴极极片模切机构(211)、阴极极耳连接机构(213)而到卷绕机构(202)的输送路径上，以感测阴极极片(103)在输送路径上的位置；
    多个阴极极片纠偏机构(222)，设置于工作平台(201)，并处于阴极极片(103)的从阴极极片放卷辊(209)起始经由阴极极片清洗机构(210)、阴极极片模切机构(211)、阴极极耳连接机构(213)而到卷绕机构(202)的输送路径上，以对阴极极片(103)进行纠偏。
  18. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，二次电池电芯卷绕成型***(2)还包括：
    多个隔离膜感应机构(223)，设置于工作平台(201)，分别处于对应隔离膜(105)的从第一隔离膜放卷辊(215A)到卷绕机构(202)的输送路径以及从第二隔离膜放卷辊(215B)到卷绕机构(202)的输送路径上，以感测对应隔离膜(105)在输送路径上的位置。
  19. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极片放卷辊(203)、阴极极片放卷辊(209)、第一隔离膜放卷辊(215A)以及第二隔离膜放卷辊(215B)均能够沿垂直于工作平台(201)方向伸缩。
  20. 根据权利要求10、13或15所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极片清洗机构(204)包括：
    阳极极片激光清洗***(2041)，用于对经过的阳极极片(101)的阳极膜片(1012)对应进行清洗；
    阳极极片除尘机构(2042)，用于去除阳极极片激光清洗***(2041)进行清洗时产生的阳极膜片(1012)颗粒；以及
    阳极极片吸附冷却辅助平台(2043)，将吸附固定并冷却经过阳极极片激光清洗***(2041)的阳极极片(101)。
  21. 根据权利要求20所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极片吸附冷却辅助平台(2043)为抽真空吸附。
  22. 根据权利要求10、14或15所述的二次电池电芯卷绕成型***(2)，其特征在于，阴极极片清洗机构(210)包括：
    阴极极片激光清洗***(2101)，用于对经过的阴极极片(103)的阴极膜片(1032)对应进行清洗；
    阴极极片除尘机构(2102)，用于去除阴极极片激光清洗***(2101)进行清洗时产生的阴极膜片(1032)颗粒；以及
    阴极极片吸附冷却辅助平台(2103)，将吸附固定并冷却经过阴极极片激光清洗***(2101)的阴极极片(103)。
  23. 根据权利要求22所述的二次电池电芯卷绕成型***(2)，其特征在于，阴极极片吸附冷却辅助平台(2103)为抽真空吸附。
  24. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极片模切机构(205)包括：
    阳极极片模切凸模机构(2051)；以及
    阳极极片模切凹模机构(2052)，与阳极极片模切凸模机构(2051)配合，以在阳极极片(101)经过阳极极片模切机构(205)时在阳极极耳收容凹槽(1013)的侧缘处模切阳极极片(101)而形成贯穿阳极极片(101)的阳极极片模切缺口(1014)。
  25. 根据权利要求10或24所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极片模切机构(205)还包括：
    阳极极片模切废料收集机构(2053)，用于收集模切下来的阳极极片(101)的废料。
  26. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阴极极片模切机构(211)包括：
    阴极极片模切凸模机构(2111)；以及
    阴极极片模切凹模机构(2112)，与阴极极片模切凸模机构(2111)配 合，以在阴极极片(103)经过阴极极片模切机构(211)时在阴极极耳收容凹槽(1033)的侧缘处模切阴极极片(103)而形成贯穿阴极极片(103)的阴极极片模切缺口(1034)。
  27. 根据权利要求10或26所述的二次电池电芯卷绕成型***(2)，其特征在于，阴极极片模切机构(211)还包括：
    阴极极片模切废料收集机构(2113)，用于收集模切下来的阴极极片(103)的废料。
  28. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极耳连接机构(207)包括：
    阳极极耳焊头机构(2071)；以及
    阳极极耳焊座机构(2072)，与阳极极耳焊头机构(2071)配合，以将阳极极耳(102)焊接于阳极极耳收容凹槽(1013)处的阳极集流体(1011)。
  29. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阴极极耳连接机构(213)包括：
    阴极极耳焊头机构(2131)；以及
    阴极极耳焊座机构(2132)，与阴极极耳焊头机构(2131)配合，以将阴极极耳(104)焊接于阴极极耳收容凹槽(1033)处的阴极集流体(1031)。
  30. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，卷绕机构(202)包括：
    除尘器(2021)，对输送至卷绕机构(202)的阳极极片(101)、阴极极片(103)和两个隔离膜(105)进行除尘；以及
    卷绕装置(2022)，使输送至卷绕机构(202)的阳极极片(101)、阴极极片(103)和两个隔离膜(105)层叠为使卷绕机构(202)卷绕成型二次电池电芯后对应隔离膜(105)间隔在阳极极片(101)和阴极极片(103)之间。
  31. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阳极极片传输机构(208)包括：
    固定辊(2081)，从动地使阳极极片(101)从其上通过；
    主驱动机构(2082)，主动地带动并输送阳极极片(101)；以及
    主驱动纠偏机构(2083)，位于卷绕机构(202)上游并对进入卷绕机构(202)的阳极极片(101)进行纠偏。
  32. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，阴极极片传输机构(214)包括：
    固定辊(2141)，从动地使阴极极片(103)从其上通过；
    主驱动机构(2142)，主动地带动并输送阴极极片(103)；以及
    主驱动纠偏机构(2143)，位于卷绕机构(202)上游并对进入卷绕机构(202)的阴极极片(103)进行纠偏。
  33. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，
    第一隔离膜传输机构(216A)包括：固定辊(216A1)，从动地使对应隔离膜(105)从其上通过并向卷绕机构(202)输送；
    第二隔离膜传输机构(216B)包括：固定辊(216B1)，从动地使对应隔离膜(105)从其上通过并向卷绕机构(202)输送；
  34. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，二次电池电芯卷绕成型***(2)还包括：
    多个阳极极片除尘部(224)，设置于工作平台(201)，并处于阳极极片(101)的从阳极极片清洗机构(204)经由阳极极片模切机构(205)、阳极极耳连接机构(207)而到卷绕机构(202)的输送路径上，以去除阳极极片经过清洗、极耳焊接后产生的阳极膜片(1012)颗粒。
  35. 根据权利要求10所述的二次电池电芯卷绕成型***(2)，其特征在于，二次电池电芯卷绕成型***(2)还包括：
    多个阴极极片除尘部(225)，设置于工作平台(201)，并处于阴极极片(103)的从阴极极片清洗机构(210)经由阴极极片模切机构(211)、阴极极耳连接机构(213)而到卷绕机构(202)的输送路径上，以去除阴极极片经过清洗、极耳焊接后产生的阴极膜片(1032)颗粒。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108376759A (zh) * 2018-01-17 2018-08-07 柔电（武汉）科技有限公司 一种提高能量密度的软包锂电池制备方法
US12009483B2 (en) 2015-08-31 2024-06-11 Ningde Amperex Technology Limited Secondary battery cell and winding formation system thereof

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203733894U (zh) 2014-01-17 2014-07-23 宁德新能源科技有限公司 锂离子电池
US10919112B2 (en) * 2018-04-30 2021-02-16 GM Global Technology Operations LLC Method and system for manufacturing a lithium metal negative electrode
CN109638359B (zh) * 2018-12-12 2024-04-05 广东新宇智能装备有限公司 一种模切叠片一体成形工艺
CN110190341A (zh) * 2019-05-13 2019-08-30 广东速锐智能科技有限公司 一种激光模切卷绕一体机
CN110571468A (zh) * 2019-09-30 2019-12-13 东莞市泽源机械有限公司 一种大电芯圆柱卷绕机
CN114597602B (zh) * 2020-12-04 2023-05-05 比亚迪股份有限公司 用于软包电池的覆膜极耳及其制备方法
CN112701343B (zh) * 2020-12-29 2022-12-13 上海骄成超声波技术股份有限公司 一种电池卷绕机极片入料的检测方法及电池卷绕机
CN114094054A (zh) * 2021-11-10 2022-02-25 惠州锂威新能源科技有限公司 一种多极耳电芯折极耳工艺、多极耳电芯及其多极耳电池
KR20230141818A (ko) * 2022-01-13 2023-10-10 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 전극 시트 오프셋 보정 방법, 장치, 기기, 저장 매체 및 제품
CN115986049A (zh) * 2022-11-30 2023-04-18 惠州亿纬锂能股份有限公司 一种锂离子电池正极极片、电芯及锂离子电池
CN115911504B (zh) * 2023-01-05 2023-05-09 河南锂动电源有限公司 一种用于软包电池卷芯的绕卷装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101783402A (zh) * 2009-01-16 2010-07-21 东莞新能源科技有限公司 锂离子电池阴极片的去毛刺方法
US20110020694A1 (en) * 2009-07-24 2011-01-27 Gm Global Technology Operations, Inc. Battery pack having welded cell tab and interconnect assembly
CN102315477A (zh) * 2011-08-31 2012-01-11 深圳市雅康精密机械有限公司 电池卷绕机
CN202495523U (zh) * 2012-02-27 2012-10-17 宁德新能源科技有限公司 锂离子电池及其极片
CN203574050U (zh) * 2013-11-21 2014-04-30 东莞新能源科技有限公司 叠片式电芯及锂离子电池
CN204946995U (zh) * 2015-08-31 2016-01-06 宁德新能源科技有限公司 二次电池电芯及其卷绕成型***

Family Cites Families (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017442A (en) 1988-03-19 1991-05-21 Hitachi Maxell, Ltd. Coiled lithium battery
US5154993A (en) 1990-04-27 1992-10-13 Eveready Battery Company, Inc. Electrode strips for coiled assemblies and method of producing them
JPH0513064A (ja) 1991-07-02 1993-01-22 Sanyo Electric Co Ltd アルカリ蓄電池用電極板の製造方法
JP3310308B2 (ja) 1991-07-19 2002-08-05 株式会社日立製作所 プログラム群管理システム
JPH0620707A (ja) 1992-07-02 1994-01-28 Hitachi Maxell Ltd 渦巻形リチウム電池
US5478668A (en) 1993-11-30 1995-12-26 Bell Communications Research Inc. Rechargeable lithium battery construction
JPH11317218A (ja) 1998-04-30 1999-11-16 Toyota Central Res & Dev Lab Inc シート電極
US6100114A (en) 1998-08-10 2000-08-08 International Business Machines Corporation Encapsulation of solder bumps and solder connections
JP3428448B2 (ja) 1998-08-21 2003-07-22 三菱電機株式会社 電極構造体およびそれを用いた電池
JP2000277155A (ja) 1999-03-25 2000-10-06 Hitachi Ltd 非水電解液二次電池
US6300002B1 (en) * 1999-05-13 2001-10-09 Moltech Power Systems, Inc. Notched electrode and method of making same
JP2000323135A (ja) * 1999-05-13 2000-11-24 Toshiba Battery Co Ltd アルカリ電池用電極の加工方法、および加工装置
JP4850996B2 (ja) 2000-04-28 2012-01-11 パナソニック株式会社 極板ユニットおよび電池
JP3614768B2 (ja) 2000-10-20 2005-01-26 タイコエレクトロニクスアンプ株式会社 バッテリコネクタ
JP3456701B2 (ja) 2001-09-28 2003-10-14 オーケー化成株式会社 合成樹脂模様材の製造方法
JP4017376B2 (ja) 2001-10-24 2007-12-05 松下電器産業株式会社 リチウム二次電池
CN1260848C (zh) 2002-03-28 2006-06-21 Tdk株式会社 锂二次电池
KR100509606B1 (ko) * 2003-02-19 2005-08-22 삼성에스디아이 주식회사 젤리-롤형의 전지부와, 이의 와인딩 방법 및 이를이용하여 제조된 리튬 이차 전지
JP4380201B2 (ja) 2003-04-09 2009-12-09 パナソニック株式会社 非水電解液二次電池の製造方法
CN1221054C (zh) 2003-06-18 2005-09-28 福建南平南孚電池有限公司 袋式锂离子电池的制备方法
KR100635761B1 (ko) 2004-06-25 2006-10-17 삼성에스디아이 주식회사 전극조립체 및 이를 이용하는 이차전지
CN2786795Y (zh) 2005-03-30 2006-06-07 武汉华枫传感器件公司 一种卷绕式锂离子电池的极片
JP4929701B2 (ja) 2005-12-16 2012-05-09 パナソニック株式会社 非水電解液二次電池
CN100347883C (zh) * 2006-01-20 2007-11-07 深圳市豪鹏科技有限公司 一种氢镍电池负极片材的制作方法
JP5400268B2 (ja) 2006-01-26 2014-01-29 パナソニック株式会社 リチウム二次電池
JP2008171593A (ja) 2007-01-09 2008-07-24 Shoei Electronics Kk 有機電解質電池およびその製造方法
CN201087907Y (zh) 2007-03-23 2008-07-16 深圳市邦凯电子有限公司 锂电池负电极片结构
JP4586820B2 (ja) 2007-05-07 2010-11-24 ソニー株式会社 巻回型非水電解質二次電池
WO2009009187A1 (en) 2007-06-15 2009-01-15 Johnson Controls - Saft Advanced Power Solutions Llc Laser cutting system
TW200908427A (en) 2007-08-01 2009-02-16 Nan Ya Printed Circuit Board Corp Fuel cell module
KR101192056B1 (ko) 2008-02-05 2012-10-17 에스케이이노베이션 주식회사 파우치 타입 리튬 이차 전지 및 이의 제조 방법
KR100982003B1 (ko) 2008-04-17 2010-09-13 주식회사 엘지화학 절연특성이 향상된 전지
KR101009517B1 (ko) 2008-06-23 2011-01-18 삼성에스디아이 주식회사 전극 조립체와 이를 이용한 리튬 이차 전지
JP2010055906A (ja) 2008-08-28 2010-03-11 Sanyo Electric Co Ltd 非水電解質二次電池
JP2010073653A (ja) 2008-09-22 2010-04-02 Panasonic Corp 電池
JP5225002B2 (ja) * 2008-09-30 2013-07-03 株式会社東芝 二次電池
CN201336332Y (zh) * 2008-12-05 2009-10-28 深圳市倍特力电池有限公司 一种镍电池正极片以及使用该正极片的电池
JPWO2010134258A1 (ja) 2009-05-18 2012-11-08 パナソニック株式会社 非水電解質二次電池用電極板及び非水電解質二次電池
CN101826609A (zh) * 2009-12-22 2010-09-08 湖南科霸汽车动力电池有限责任公司 一种电池极片与极耳的连接方法
JP2011138632A (ja) * 2009-12-25 2011-07-14 Sanyo Electric Co Ltd 非水電解質二次電池
US8309880B2 (en) 2010-01-29 2012-11-13 Phoenix Silicon International Corporation Coating layer removing apparatus and method for the same
JP5798404B2 (ja) 2010-08-31 2015-10-21 日東電工株式会社 極板保護用粘着テープ
DE102010062143B4 (de) * 2010-11-29 2016-08-04 Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg Gemeinnützige Stiftung Batterieelektrode und Verfahren zum Herstellen derselben
US9935339B2 (en) 2010-12-28 2018-04-03 Sanyo Electric Co., Ltd. Nonaqueous electrolyte secondary battery
JP5935265B2 (ja) * 2011-08-29 2016-06-15 Tdk株式会社 巻回型電気化学デバイス
JP2014225326A (ja) 2011-09-14 2014-12-04 パナソニック株式会社 非水電解質二次電池
EP2584629B1 (en) 2011-10-21 2014-10-01 BlackBerry Limited Recessed tab for higher energy density and thinner batteries
CN202373667U (zh) * 2011-12-21 2012-08-08 东莞新能源科技有限公司 锂离子电池的电芯及其极片
CN202423456U (zh) * 2012-02-01 2012-09-05 益阳科力远电池有限责任公司 用于极片切圆角的装置
KR101328991B1 (ko) * 2012-03-20 2013-11-14 삼성에스디아이 주식회사 이차 전지
JP2013201094A (ja) 2012-03-26 2013-10-03 Hitachi Maxell Ltd 非水電解液二次電池
CN202585621U (zh) 2012-05-20 2012-12-05 福建博瑞特电机有限公司 一种锂离子动力电池极片的冲制设备
CN102694148A (zh) 2012-05-28 2012-09-26 东莞新能源科技有限公司 锂离子电池正极极片的干法去毛刺方法
CN202839841U (zh) * 2012-07-31 2013-03-27 东莞新能源科技有限公司 一种锂离子电池正极极片
CN102903886A (zh) 2012-08-13 2013-01-30 南京大学 一种干法腐蚀去除电池极片毛刺的方法
JP6070067B2 (ja) 2012-10-30 2017-02-01 ソニー株式会社 電池、電極、電池パック、電子機器、電動車両、蓄電装置および電力システム
CN103579666B (zh) * 2013-11-04 2016-02-03 维动新能源股份有限公司 一种低内阻复合锂离子电芯及其制作工艺
CN203733894U (zh) * 2014-01-17 2014-07-23 宁德新能源科技有限公司 锂离子电池
US20160013455A1 (en) * 2014-07-14 2016-01-14 Apple Inc. Stacked-cell battery with notches to accommodate electrode connections
CN104157914B (zh) 2014-09-02 2016-03-16 山东齐星新能源科技有限责任公司 一种高功率软包装锂离子电池及其制作工艺
CN105406028A (zh) 2014-09-12 2016-03-16 东莞新能源科技有限公司 极片涂层的移除方法
CN105990612A (zh) 2015-02-05 2016-10-05 宁德新能源科技有限公司 电芯
CN204538109U (zh) * 2015-02-12 2015-08-05 佛山市实达科技有限公司 一种动力锂离子电池焊接极耳的改良结构
CN204905336U (zh) 2015-07-02 2015-12-23 宁德新能源科技有限公司 电极极片及采用该极片的电芯
CN108352492B (zh) 2015-08-31 2021-08-31 宁德新能源科技有限公司 二次电池电芯
US9929393B2 (en) * 2015-09-30 2018-03-27 Apple Inc. Wound battery cells with notches accommodating electrode connections
CN105514352B (zh) 2015-12-14 2019-04-26 东莞新能源科技有限公司 电极组件及采用该电极组件的锂离子电芯
CN205355186U (zh) 2015-12-29 2016-06-29 宁德新能源科技有限公司 一种卷绕结构的电池
CN110364661B (zh) * 2018-04-11 2022-11-25 宁德新能源科技有限公司 隔离膜及储能装置
CN109301326B (zh) * 2018-09-21 2020-11-27 宁德新能源科技有限公司 一种电解液及电化学装置
CN109383682B (zh) 2018-11-28 2024-01-19 南京金城机械有限公司 摩托车头部安装连接结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101783402A (zh) * 2009-01-16 2010-07-21 东莞新能源科技有限公司 锂离子电池阴极片的去毛刺方法
US20110020694A1 (en) * 2009-07-24 2011-01-27 Gm Global Technology Operations, Inc. Battery pack having welded cell tab and interconnect assembly
CN102315477A (zh) * 2011-08-31 2012-01-11 深圳市雅康精密机械有限公司 电池卷绕机
CN202495523U (zh) * 2012-02-27 2012-10-17 宁德新能源科技有限公司 锂离子电池及其极片
CN203574050U (zh) * 2013-11-21 2014-04-30 东莞新能源科技有限公司 叠片式电芯及锂离子电池
CN204946995U (zh) * 2015-08-31 2016-01-06 宁德新能源科技有限公司 二次电池电芯及其卷绕成型***

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12009483B2 (en) 2015-08-31 2024-06-11 Ningde Amperex Technology Limited Secondary battery cell and winding formation system thereof
CN108376759A (zh) * 2018-01-17 2018-08-07 柔电（武汉）科技有限公司 一种提高能量密度的软包锂电池制备方法

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