WO2023225928A1 - 极耳抚平装置 - Google Patents

极耳抚平装置 Download PDF

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Publication number
WO2023225928A1
WO2023225928A1 PCT/CN2022/095166 CN2022095166W WO2023225928A1 WO 2023225928 A1 WO2023225928 A1 WO 2023225928A1 CN 2022095166 W CN2022095166 W CN 2022095166W WO 2023225928 A1 WO2023225928 A1 WO 2023225928A1
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WO
WIPO (PCT)
Prior art keywords
tab
guide surface
smoothing
pole
pole piece
Prior art date
Application number
PCT/CN2022/095166
Other languages
English (en)
French (fr)
Inventor
杨国众
孙祥立
李丰丹
覃雄
徐敏江
裴煦
吴小平
阳超
Original Assignee
宁德时代新能源科技股份有限公司
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.)
Filing date
Publication date
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 EP22929229.7A priority Critical patent/EP4310979A1/en
Priority to CN202280042408.8A priority patent/CN117480661A/zh
Priority to PCT/CN2022/095166 priority patent/WO2023225928A1/zh
Priority to US18/508,552 priority patent/US20240079549A1/en
Publication of WO2023225928A1 publication Critical patent/WO2023225928A1/zh

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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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/043—Processes of manufacture in general involving compressing or compaction
    • H01M4/0435—Rolling or calendering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/16—Folding; Pleating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • 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
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/52—Surface of the elements in contact with the forwarded or guided material other geometrical properties
    • B65H2404/521—Reliefs
    • B65H2404/5211—Reliefs only a part of the element in contact with the forwarded or guided material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/61—Longitudinally-extending strips, tubes, plates, or wires
    • B65H2404/612—Longitudinally-extending strips, tubes, plates, or wires and shaped for curvilinear transport path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/72—Fuel cell manufacture
    • 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

Definitions

  • the present application relates to the technical field of battery manufacturing, and in particular to a tab smoothing device.
  • Batteries are widely used in electrical devices such as vehicles, ships or aircraft.
  • the current collectors on the battery pole pieces tend to become thinner and thinner.
  • thinner current collectors will cause the pole tabs to be easily folded, collapsed or bent after being formed.
  • This application provides a pole tab smoothing device, which includes a roller for conveying the pole piece, a cover body and a smoothing part.
  • the surface of the roller contacts the pole piece in the contact area, and the cover surrounds the outer periphery of the contact area and includes a feed guide surface facing the contact area.
  • the smoothing portion protrudes from the feeding guide surface and is opposite to the pole tab position of the pole piece.
  • the smoothing portion forms a pole tab guide surface; and, along the feeding direction of the pole piece, the smoothing portion is at least partially located in contact with the pole piece. the upper reaches of the region.
  • the pole piece when the pole tab smoothing device is used, the pole piece can be transported through the roller, so that the pole tab of the pole piece can penetrate between the roller and the pole tab guide surface.
  • the smoothing portion In the process between the roller and the pole tab guide surface, because along the feeding direction of the pole piece, the smoothing portion is at least partially located upstream of the contact area, and because the smoothing portion is opposite to the pole tab of the pole piece, as the As the pole piece gradually penetrates, the smoothing portion can exert a smoothing force on the pole tab of the pole piece to flatten the folded portion of the pole tab. During this process, the smoothing portion exerts a smoothing force on the pole tab of the pole piece.
  • the part of the tab arranged earlier than the pole piece penetrates between the tab guide surface and the position on the roller located in the contact area. It can be understood that, on the one hand, in the process of smoothing the tab by the smoothing part, the distance between the tab The contact area of the roller is far away, and the tab is not easily stuck between the smoothing part and the roller, so that the tab can move along the feeding direction under the driving of the roller and be smoothed by the smoothing part; on the other hand, Before the part of the pole piece where the pole tab is arranged comes into contact with the contact area of the roller, the pole tab has been roughly flattened, and the pole tab is not easily stuck in the process of penetrating between the pole tab guide surface and the position of the roller in the contact area. Between the smoothing part and the roller, in this way, the folded part of the tab can be smoothed to solve the problem of folding, sagging or bending after the tab is formed, and it can also prevent the folded part of the tab from being stuck.
  • the contact area includes the feeding position of the rolled pole piece, and the distance between the free end of the feeding guide surface and the pole piece is greater than the distance between the feeding guide surface and the pole piece at the feeding position.
  • the free end points along the first direction to the feeding guide surface at the feeding position, and is arranged at an acute angle ⁇ 1 between the first direction and the feeding direction of the pole piece.
  • ⁇ 1 ranges from 1° to 45°.
  • the smoothing part can be used to smooth the pole lug better.
  • ⁇ 1 is between 7° and 15°.
  • the tab guide surface is provided on the side of the smoothing portion away from the feed guide surface.
  • the angle between the feed guide surface and the tab guide surface is ⁇ 2 , and ⁇ 1 is greater than ⁇ 2 . It can be understood that there is a certain distance between the side of the smoothing part away from the feeding guide surface and the tab between the penetration roller and the tab guide surface, and the distance is gradually reduced to ensure that the smoothing part can be more gently and smoothly Gradually smooth the pole tabs of the pole pieces.
  • the distance between the free end of the feed guide surface and the pole piece is H 1 , wherein the width of the tab of the pole piece is D, and H 1 ⁇ 1.25 ⁇ D. It can be understood that the upward folding height of the flipped part of the pole lug will not be greater than the width of the pole lug. Setting H 1 ⁇ 1.25 ⁇ D can better ensure that the protruding smoothing part on the feed guide surface can be in contact with the pole lug. The flipped parts of the tabs are in contact with each other to exert a smoothing force to flatten the folded parts of the tabs, which is beneficial to improving the smoothing effect.
  • the distance between the feeding guide surface and the pole piece at the feeding position is H 2 , and H 2 is 0-3 mm.
  • the smoothing part includes a plurality of smoothing racks arranged at intervals on the feeding guide surface, and each smoothing rack starts from the free end of the feeding guide surface toward the feeding guide surface at the feeding position. extend.
  • the use of multiple smoothing racks can more comprehensively contact the folded part of the pole lug, so as to better smooth the folded part of the pole lug.
  • each smoothing tooth rack includes a helical tooth segment, and the helical tooth segment is arranged obliquely in the width direction of the pole piece.
  • the free end of the feed guide surface points to the feed guide surface along the first direction at the feed position, and the angle between the helical tooth segment and the first direction is ⁇ , and ⁇ is 0°-60 °. This setting can not only ensure the smoothing effect of the pole ears, but also avoid collisions during smoothing operations.
  • At least one smoothing rack further includes a straight tooth segment.
  • One end of the straight tooth segment is connected to the helical tooth segment in the current smoothing rack, and the other end extends along the first direction to the feeding guide surface. the free end.
  • the straight tooth section extending along the first direction can contact the upwardly folded part of the pole tab. As the pole tab penetrates, the straight tooth section can be used to press down the upwardly folded part of the pole tab, and with the help of the helical tooth section Smooth the pole ears gradually to improve the smoothing effect of the pole ears.
  • the width dimension of the plurality of smoothing racks arranged on the feed guide surface is W 1 , and W 1 is larger than the width of the pole tab.
  • the width of the pole tab is the size of the pole tab in the direction parallel to the width of the pole piece.
  • the size of the folded portion of the pole tab in the direction parallel to the width of the pole piece will not be greater than the width of the pole tab.
  • Setting W 1 to be greater than the width of the pole lug can ensure that multiple smoothing racks can more fully contact the folded part of the pole lug to smooth the folded part of the pole lug and improve the smoothing effect of the pole lug.
  • the distance between two adjacent smoothing racks is W 2 , and W 2 is 3mm-5mm. It not only ensures the smoothing effect of the pole ears, but also prevents the pole ears from being clamped.
  • the cover body further includes an arc-shaped angular surface connected to the feed guide surface, and the arc-shaped angular surface cooperates with the outer peripheral wall of the roller with a clearance.
  • the pole tab of the pole piece can penetrate between the arc-shaped corner surface and the outer peripheral wall of the roller.
  • the arc-shaped corner surface The pole piece can be guided to improve the smoothing effect of the pole piece.
  • the cover further includes a discharging guide surface, and the discharging guide surface and the feeding guide surface are respectively connected to both ends of the arc-shaped corner surface in the arc length direction.
  • the discharging guide surface provided can guide the pole piece to penetrate between the discharging guide surface and the roller during the rewinding process of the pole piece.
  • the free end of the feed guide surface is provided with a first everted arcuate surface extending outward toward the side away from the pole piece, and the feed guide surface is along the tangential direction of the first everted arcuate surface. set up.
  • the first everted arc-shaped surface arranged in an arc shape can well protect the penetrating pole piece and prevent the pole piece from being damaged.
  • Figure 1 shows a schematic structural diagram of the tab smoothing device in an embodiment of the present application
  • Figure 2 shows a side view of the tab smoothing device in an embodiment of the present application
  • Figure 3 shows a schematic structural diagram of the tab smoothing structure in an embodiment of the present application
  • Figure 4 shows a side view of the tab smoothing structure in an embodiment of the present application
  • Figure 5 shows a bottom view of the tab smoothing structure in an embodiment of the present application
  • Figure 6 shows a schematic structural diagram of the tab smoothing device in another embodiment of the present application.
  • Figure 7 shows a side view of the tab smoothing device in another embodiment of the present application.
  • Figure 8 shows a side view of the tab smoothing structure in another embodiment of the present application.
  • Tab smoothing device 100. Roller; 1001. Contact area; 110. Fixed shaft; 120. Rotating roller; 200. Tab smoothing structure; 210. Cover body; 211. Feed guide surface; 2111. Free end; 212, arc-shaped corner surface; 213, discharge guide surface; 214, first everted arc surface; 215, second everted arc surface; 216, first mounting hole; 217, bolt; 220, Smoothing part; 2201, pole lug guide surface; 221, smoothing rack; 2211, helical tooth section; 2212, straight tooth section; 230, mounting base; 300, pole piece; 310, pole tab.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to more than two (including two).
  • multiple groups refers to two or more groups (including two groups), and “multiple pieces” refers to It is more than two pieces (including two pieces).
  • Batteries are widely used in electrical devices such as vehicles, ships or aircraft.
  • the current collectors on the battery pole pieces tend to become thinner and thinner.
  • thinner current collectors will cause the pole tabs to be easily folded, collapsed or bent after being formed.
  • the inventor of this application discovered through research that in related technologies, the pole piece is passed between two limiting components to smooth the pole tab. However, this method will cause the folded part of the tab to be easily stuck between the two limiting components, thereby causing damage to the tab.
  • the inventor of the present application has conducted in-depth research and designed a tab smoothing device that can smooth the folded portion of the tab.
  • This tab smoothing device can be used to smooth the folded portion of the tab. Smoothing will not cause the folded part of the pole lug to be stuck, and can effectively smooth the pole lug.
  • the tab smoothing device disclosed in the embodiment of the present application can be used in, but is not limited to, the production of batteries.
  • the battery can be a battery cell, a battery module or a battery pack.
  • the tab smoothing device disclosed in this application can be used to smooth the tabs, which is beneficial to improving the production quality of the battery and improving the safety performance of the battery.
  • FIG. 1 shows a schematic structural diagram of the tab smoothing device 10 in an embodiment of the present application
  • FIG. 2 shows a side view of the tab smoothing device 10 in an embodiment of the present application.
  • the tab smoothing device 10 includes a roller 100 and a tab smoothing structure 200 .
  • the roller 100 includes a fixed shaft 110 and a rotating roller 120 arranged on the fixed shaft 110.
  • the fixed shaft 110 can be installed on a suitable mounting frame.
  • the rotating roller 120 can rotate relative to the fixed shaft 110, and the rotating roller 120 can be driven by a driving mechanism.
  • the pole piece 300 is rotated and then transported, so that the tab smoothing structure 200 is used to smooth the tabs 310 of the transported pole piece 300 .
  • FIG. 3 shows a schematic structural diagram of the tab smoothing structure 200 in an embodiment of the present application.
  • a tab smoothing device 10 provided in an embodiment of the present application includes a roller 100 for transporting the pole piece 300 and a tab smoothing structure 200 .
  • the surface of the roller 100 is in contact with the pole piece 300 in the contact area 1001.
  • the pole tab smoothing structure 200 includes a cover 210 and a smoothing portion 220.
  • the cover 210 surrounds the outer periphery of the contact area 1001 , and the cover 210 includes a feeding guide surface 211 facing the contact area 1001 .
  • the smoothing portion 220 is protrudingly provided on the feeding guide surface 211 and is opposite to the pole tab 310 of the pole piece 300.
  • the smoothing portion 220 is formed with a pole tab guiding surface 2201; and along the feeding direction of the pole piece 300, The smoothed portion 220 is located at least partially upstream of the contact area 1001 .
  • cover 210 refers to a member that can surround the outer circumference of the roller 100 and be attached to the roller 100.
  • the cover body 210 is generally plate-shaped, and the cover body 210 may include a curved plate part, a straight plate part, or both a curved plate part and a straight plate part, which is not specifically limited here.
  • the above-mentioned “smoothing part 220” refers to a component that is protruding on the feed guide surface 211 and can form the tab guide surface 2201, so as to apply the folded portion of the tab 310 to the tab 310 of the pole piece 300 being transported. Smoothing power.
  • the smoothing portion 220 is generally in the shape of a comb tooth, and can exert a smoothing force on the tab 310 of the transported pole piece 300 to flatten the folded portion of the tab 310 .
  • feeding guide surface 211 refers to a surface that can guide the tab 310 between the penetration roller 100 and the feeding guide surface 211.
  • free end 2111 refers to the side of the feed guide surface 211 away from the contact area 1001.
  • the pole tab 310 can pass through the free end 2111 of the feed guide surface 211 and penetrate between the contact area 1001 and the smoothing portion 220. .
  • the above-mentioned "contact area 1001" refers to the area on the surface of the roller 100 that can substantially contact the pole piece 300, and the smoothing portion 220 can be at least partially located upstream of the contact area 1001, so as to better utilize the smoothing portion 220 to oppose the pole piece.
  • the pole lug 310 of 300 performs smoothing operation.
  • the pole piece 300 can be wound around the surface of the roller 100 under the conveyance of the roller 100 to contact the contact area 1001 .
  • the contact area 1001 includes the portion of the surface of the roller 100 around which the pole piece 300 is wound.
  • the pole piece 300 can also contact the contact area 1001 in other ways, which is not specifically limited here.
  • tab guide surface 2201 refers to a surface that can exert a smoothing force on the tab 310 of the pole piece 300 to flatten the folded portion of the tab 310.
  • the tab guide surface 2201 may be an entire surface, may be composed of multiple mutually independent surfaces, or may be a discontinuous surface composed of multiple linear parts, which is not specifically limited here.
  • the pole piece 300 can be transported through the roller 100 so that the pole tab 310 of the pole piece 300 can penetrate between the roller 100 and the pole tab guide surface 2201.
  • the smoothing portion 220 is at least partially located upstream of the contact area 1001, and due to the contact between the smoothing portion 220 and the pole piece 300
  • the pole tabs 310 are positioned relative to each other. In this way, as the pole piece 300 is gradually penetrated, the smoothing portion 220 can exert a smoothing force on the pole tab 310 of the pole piece 300 to flatten the folded portion of the pole tab 310.
  • the smoothing force applied by the smoothing portion 220 to the tab 310 of the pole piece 300 is earlier than the pole piece 300 and the portion of the tab 310 penetrates between the tab guide surface 2201 and the position on the roller 100 located in the contact area 1001 , it can be understood that, on the one hand, during the smoothing process of the tab 310 by the smoothing portion 220, the tab 310 is far away from the contact area 1001 of the roller 100, and the tab 310 is not easily stuck between the smoothing portion 220 and the roller 100.
  • the pole tab 310 can well move along the feeding direction F driven by the roller 100 and be smoothed by the smoothing part 220; on the other hand, the part of the pole piece 300 where the pole tab 310 is arranged is in contact with the roller 100 Before contact with the contact area 1001, the tab 310 has been roughly flattened, and the tab 310 is not easily stuck in the flattened portion 220 during the process of penetrating between the tab guide surface 2201 and the position of the contact area 1001 on the roller 100. and the roller 100, in this way, the folded part of the pole tab 310 can be smoothed to solve the problem of folding, sagging or bending after the pole tab 310 is formed, and the folded part of the pole tab 310 can be avoided. got stuck.
  • the folded portion of the pole tab 310 of the pole piece 300 is turned upward, so that the pole piece 300 can be aligned with the pole piece 300 by the pole tab smoothing structure 200 surrounding the roller 100 .
  • the pole ear 310 performs smoothing operation.
  • the contact area 1001 includes the feeding position of the rolled pole piece 300.
  • the distance between the free end 2111 of the feeding guide surface 211 and the pole piece 300 is larger than the feeding position.
  • the distance between the free end 2111 of the feed guide surface 211 and the pole piece 300 is H 1
  • the distance between the feed guide surface 211 and the pole piece 300 at the feed position is H 2 , that is, H 1 >H 2 .
  • the free end 2111 points to the feeding guide surface 211 along the first direction F 1 at the feeding position, the first direction F 1 is consistent with the feeding direction of the pole piece 300 F is set at an acute angle ⁇ 1 between feeding materials .
  • the material feeding guide surface 211 roughly corresponds to position a in Figure 3 at the material feeding position.
  • ⁇ 1 is 1°-45°, and the smoothing portion 220 can be used to better smooth the tab 310 .
  • ⁇ 1 is 1°-30°, and ⁇ 1 is too large, resulting in the tab 310 not penetrating between the roller 100 and the tab guide surface 2201 at the optimal cutting angle, resulting in poor smoothing effect; If ⁇ 1 is too small, it will affect the penetration of the tab 310 between the roller 100 and the tab guide surface 2201. Based on this, ⁇ 1 needs to be set within an appropriate range. For example, ⁇ 1 is set to 1°-30°, which can both It is ensured that the tab 310 can smoothly penetrate between the roller 100 and the tab guide surface 2201, and can also penetrate between the roller 100 and the tab guide surface 2201 at the optimal cutting angle, so that the smoothing effect is better.
  • cutting angle refers to ⁇ 1 .
  • ⁇ 1 is 7°-15°
  • the flattened portion 220 can be used to gradually flatten the folded portion of the tab 310, and the flattening effect is good.
  • the tab guide surface 2201 is provided on the side of the smoothing portion 220 away from the feed guide surface 211.
  • the connection between the feed guide surface 211 and the tab guide surface 2201 is The angle between them is ⁇ 2 , ⁇ 1 is greater than ⁇ 2 .
  • the pole tab guide surface 2201 can be aligned with the feed direction F of the pole piece 300 .
  • ⁇ 2 is 1°-10°. If ⁇ 2 is too large, ⁇ 0 will be too small, which will affect the penetration of the tab 310. If ⁇ 2 is too small, ⁇ 0 will be too large, which will cause the distance between the tab guide surface 2201 and the inserted tab 310 to be too large. Large, affecting the smoothing effect. Based on this, ⁇ 2 needs to be controlled within an appropriate range. For example, ⁇ 2 is set to 1°-10°, and ⁇ 2 is smaller than ⁇ 1. In this way, it can ensure that the pole lug 310 can smoothly Penetrating between the roller 100 and the tab guide surface 2201, the smoothing portion 220 can be used to gently and gradually smooth the tab 310 of the pole piece 300.
  • the distance between the free end 2111 of the feed guide surface 211 and the pole piece 300 is H 1 , where the width of the tab 310 of the pole piece 300 is D, H 1 ⁇ 1.25 ⁇ D; the width of the pole tab 310 is the size of the pole tab 310 in the direction parallel to the width of the pole piece 300 .
  • the width direction of the pole piece 300 is perpendicular to the length direction of the pole piece 300, so that H 1 ⁇ 1.25 ⁇ D, that is, the distance between the free end 2111 of the feed guide surface 211 and the pole piece 300 is greater than 1.25 times the width of the pole tab 310 .
  • the upward folding height of the flipped part of the pole lug 310 will not be greater than the width of the pole lug 310.
  • Setting H 1 ⁇ 1.25 ⁇ D can better ensure the smoothing portion provided on the feeding guide surface 211 220 can be in contact with the flipped part of the tab 310 to apply a smoothing force to the flipped part of the tab 310 to flatten it, which is beneficial to improving the smoothing effect.
  • the size of the feed guide surface 211 along the first direction F 1 is L 1 , and L 1 is roughly inversely proportional to ⁇ 1 .
  • the cutting angle penetrates between the roller 100 and the tab guide surface 2201, and the smoothing operation is performed through the smoothing portion 220 of appropriate length, so that the smoothing effect of the tab 310 is better.
  • the distance between the feed guide surface 211 and the pole piece 300 at the feed position is H 2 , and H 2 is 0-3 mm.
  • H 2 If H 2 is too small, the pole piece 300 will be stuck due to processing errors. If H 2 is too large, the smoothing effect of the pole tab 310 will be affected.
  • H 2 needs to be controlled within an appropriate range, such as setting H 2 to 0-3mm. Specifically, H 2 is about 1 mm.
  • the smoothing portion 220 includes a plurality of smoothing racks 221 spaced on the feeding guide surface 211 , and each smoothing rack 221 is formed by a portion of the feeding guide surface 211 .
  • the free end 2111 extends toward the feeding guide surface 211 at the feeding position.
  • “Smoothing rack 221” refers to a strip-shaped component protruding from the feeding guide surface 211 and extending from the free end 2111 toward the feeding guide surface 211 at the feeding position.
  • the smoothing rack 221 is generally in the shape of a comb tooth. A smoothing force can be applied to the tab 310 to flatten the folded portion of the tab 310 .
  • the plurality of smoothing racks 221 can more fully contact the folded portion of the pole tab 310 to better smooth the folded portion of the pole tab 310 .
  • each smoothing rack 221 includes a helical tooth segment 2211 , and the helical tooth segment 2211 is inclined in the width direction of the pole piece 300 .
  • the helical tooth section 2211 of the smoothing rack 221 refers to the portion of the smoothing rack 221 that is arranged at an angle to the first direction F 1 .
  • the helical tooth section 2211 of the smoothing rack 221 extends along the second direction F2 .
  • the second direction F2 is set at an angle to the first direction F1
  • the second direction F2 is parallel to the feeding guide surface 211.
  • the first direction F 1 is the length direction of the feed guide surface 211
  • the width direction of the feed guide surface 211 is parallel to the width direction of the pole piece 300
  • the second direction F 1 is the length direction of the feed guide surface 211 .
  • 2 is arranged obliquely with respect to the length direction of the feed guide surface 211 and also with respect to the width direction of the feed guide surface 211.
  • the helical tooth segments 2211 are inclined in the width direction of the pole piece 300. This arrangement allows the same helical tooth segment 2211 to more fully contact the folded portion of the pole lug 310 to ensure that multiple smoothing racks 221 can more fully
  • the ground exerts a smoothing force on the tab 310 to flatten the folded portion of the tab 310, thereby improving the smoothing effect of the tab 310.
  • the free end 2111 of the feed guide surface 211 points to the feed guide surface 211 along the first direction F1 .
  • the helical tooth section 2211 is connected to the first feed guide surface 211.
  • the angle between F 1 in one direction is ⁇ , and ⁇ is 0°-60°.
  • the feeding guide surface 211 roughly corresponds to the position a in Figure 3 at the feeding position, and is set in an appropriate range (0°-60°) in conjunction with ⁇ . In this way, the contact of the tab 310 can be ensured. It has a smoothing effect and can avoid collisions during smoothing operations.
  • ⁇ is 5°-60°. If ⁇ is too small, the pole tab 310 needs to travel a long distance during the penetration process to make the helical tooth segment 2211 fully contact the folded part of the pole tab 310. The smoothing effect of the lug 310 is not good, and the smoothing efficiency is low, which will also affect the debugging efficiency; if ⁇ is too large, the helical tooth section 2211 will contact the folded part of the pole lug 310 quickly, which will easily cause an impact; based on this , ⁇ needs to be set within an appropriate range, for example, setting ⁇ to 5°-60° can not only ensure the smoothing effect of the tab 310, but also avoid collisions during the smoothing operation.
  • At least one smoothing rack 221 also includes a straight tooth segment 2212, one end of the straight tooth segment 2212 is connected to the helical tooth segment 2211 in the current smoothing rack 221, The other end extends along the first direction F 1 to the free end 2111 of the feed guide surface 211 .
  • the straight tooth segments 2212 are substantially parallel to the first direction F 1 , and the first direction F 1 is the length direction of the feed guide surface 211 .
  • At least one smoothing rack 221 also includes a straight tooth segment 2212 may mean that one smoothing rack 221 also includes a straight tooth segment 2212, or it may mean that multiple smoothing racks 221 all include straight tooth segments 2212, or All smoothing racks 221 may include straight tooth segments 2212, which is not specifically limited here.
  • the straight tooth segments 2212 extending along the first direction F1 can contact the upwardly folded portion of the pole tab 310.
  • the straight tooth segments 2212 can be used to move the upwardly folded portion of the pole tab 310 toward the pole. Press down and gradually smooth the tab 310 with the help of the helical tooth section 2211 to improve the smoothing effect of the tab 310.
  • the width dimension of the plurality of smoothing racks 221 arranged on the feed guide surface 211 is W 1 , and W 1 is larger than the width of the tab 310 .
  • the width of the pole tab 310 is the size of the pole tab 310 in a direction parallel to the width of the pole piece 300 .
  • the width dimension of the plurality of smoothing racks 221 arranged on the feeding guide surface 211 refers to the occupied size of the plurality of smoothing racks 221 along the third direction F3 on the feeding guide surface 211.
  • the third direction F3 is vertical.
  • the first direction F 1 is the length direction of the feeding guide surface 211
  • the third direction F 3 is The width direction of the feeding guide surface 211.
  • the size of the folded portion of the pole tab 310 in the direction parallel to the width of the pole piece 300 will not be larger than the width of the pole tab 310 .
  • setting W 1 to be larger than the width of the pole tab 310 can ensure that the multiple smoothing racks 221 can more fully contact the folded portion of the pole tab 310 to smooth the folded portion of the pole tab 310 and improve the pole performance. Smoothing effect of ear 310.
  • the distance between two adjacent smoothing racks 221 is W 2 , and W 2 is 3mm-5mm.
  • W 2 is too small, it is not conducive to processing, and the two adjacent smoothing racks 221 are easy to clamp the tab 310 and cause tearing. If W 2 is too large, the smoothing effect will be affected, so W 2 needs to be set at an appropriate location.
  • the range for example, is set to 3mm-5mm, which can not only ensure the smoothing effect of the pole lug 310, but also prevent the pole lug 310 from being easily clamped.
  • the cover body 210 also includes an arc-shaped corner surface 212 connected to the feed guide surface 211.
  • the arc-shaped corner surface 212 is connected to the feeding guide surface 211.
  • the outer peripheral wall of roller 100 has a clearance fit.
  • the “arc-shaped corner surface 212” refers to an arc surface connected to the feed guide surface 211 and capable of clearance matching with the outer peripheral wall of the roller 100.
  • the pole tab 310 of the pole piece 300 can penetrate between the arc-shaped corner surface 212 and the outer peripheral wall of the roller 100. During this time, the arc-shaped corner surface 212 can guide the tab 310 of the pole piece 300 to improve the smoothing effect of the tab 310.
  • the cover 210 also includes a discharge guide surface 213.
  • the discharge guide surface 213 and the feed guide surface 211 are respectively connected to the arc-shaped corner surface 212. both ends of the direction.
  • discharge guide surface 213 refers to the surface that guides the tab 310 to pass through the area between the discharge guide surface 213 and the roller 100 and pass through.
  • the pole piece 300 is guided by the discharging guide surface 213. Pass through the area between the discharge guide surface 213 and the roller 100 and pass out.
  • the pole piece 300 is usually wound on the pole piece reel, and one end of the pole piece 300 is transported through the roller 100. During this process, the pole piece 300 will inevitably undergo a tension adjustment process, which will cause the pole piece 300 to rewind.
  • the discharging guide surface 213 is provided to guide the pole piece 300 to penetrate between the discharging guide surface 213 and the roller 100 when the pole piece 300 is rewinding.
  • the discharging guide surface 213 and the discharging direction of the pole piece 300 are set at an acute angle ⁇ 3 , where ⁇ 3 is 1°-45°. It can be understood that the discharging direction of the pole piece 300 is parallel to the feeding direction F of the pole piece 300. Then, there is also an acute angle ⁇ 3 between the discharging guide surface 213 and the feeding direction F of the pole piece 300. setting, ⁇ 3 is set to 1°-45°, which can not only ensure that the pole piece 300 can be inserted smoothly, but also prevent the discharge guide surface 213 from breaking the pole piece 300 during the rewinding process of the pole piece 300.
  • the size of the discharging guide surface 213 along the length direction of the discharging guide surface 213 is L 2 , and L 2 is approximately inversely proportional to ⁇ 3 .
  • the distance between the discharge side of the discharge guide surface 213 and the pole piece 300 is H 3 .
  • H 3 ⁇ 1.25 ⁇ D the distance between the discharge side of the discharge guide surface 213 and the pole piece 300 can be During the rewinding process, the discharging guide surface 213 is better prevented from breaking the pole piece 300 .
  • the discharge guide surface 213 and the feed guide surface 211 are arranged at an angle ⁇ , and ⁇ is 20°-110°.
  • ⁇ is too small, the tab 310 is likely to get stuck. If ⁇ is too large, the smoothing effect of the tab smoothing structure 200 is not good. Therefore, ⁇ needs to be set within an appropriate range to ensure better The smoothing effect can prevent the pole lug 310 from getting stuck.
  • the free end 2111 of the feed guide surface 211 is provided with a first everted arc surface 214 extending outward toward the side away from the pole piece 300.
  • the material guide surface 211 is provided along the tangential direction of the first everted arcuate surface 214 .
  • first everted arcuate surface 214 arranged in an arc can well protect the penetrating pole piece 300 and prevent the pole piece 300 from being damaged.
  • the side of the discharge guide surface 213 away from the arc-shaped corner surface 212 is provided with a second eversion extending outward toward the side away from the pole piece 300 .
  • the arc surface 215 and the discharging guide surface 213 are arranged along the tangential direction of the second everted arc surface 215 .
  • the second everted arcuate surface 215 arranged in an arc can well protect the pole piece 300 that penetrates in the reverse direction during the rewinding process, and prevents the pole piece 300 from being damaged.
  • the lug smoothing device 10 further includes a mounting base 230 .
  • the mounting base 230 refers to being capable of disposing the cover 210 on the roller 100 and surrounding the cover 210 .
  • Components on the outer circumference of the roller 100 for example, the mounting seat 230 is sleeved on the fixed shaft 110 of the roller 100, the cover body 210 is provided with a first mounting hole 216, and the mounting seat 230 is provided with a second mounting hole.
  • the cover body 210 and the mounting base 230 are connected via the first mounting hole 216 and the second mounting hole, so that the cover body 210 is placed on the roller 100 and the cover body 210 surrounds the outer circumference of the roller 100 .
  • the first mounting hole 216 and the second mounting hole may be threaded holes, and the cover 210 may be installed on the roller 100 through bolts 217 matching the threaded holes.
  • the tab smoothing device 10 includes a roller 100 and a tab smoothing structure 200 .
  • the tab smoothing structure 200 includes a cover 210 and a smoothing portion 220 .
  • the surface of the roller 100 is in contact with the pole piece 300 in the contact area 1001.
  • the cover 210 surrounds the outer periphery of the contact area 1001.
  • the cover 210 includes a feed guide surface 211 facing the contact area 1001.
  • the smoothing portion 220 is protrudingly provided on the feed.
  • the smoothed portion 220 is formed with a tab guide surface 2201; and along the feeding direction of the pole piece 300, the smoothed portion 220 is at least partially located in the contact area 1001 of the upstream.
  • the distance (H 1 ) between the free end 2111 of the feed guide surface 211 and the pole piece 300 is greater than the distance (H 2 ) between the feed guide surface 211 and the pole piece 300 at the feed position.

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Abstract

本申请涉及一种极耳抚平装置(10)。一种极耳抚平装置(10)包括用于输送极片(300)的辊(100)、罩体(210)以及抚平部(220)。辊(100)的表面在接触区域(1001)与极片(300)接触，罩体(210)围绕于接触区域(1001)的外周，且包括朝向接触区域(1001)的入料导向面(211)。抚平部(220)凸出设置于入料导向面(211)上，并与极片(300)的极耳(310)位置相对，抚平部(220)形成有极耳导向面(2201)；并且，沿极片(300)的入料方向，抚平部(220)至少部分位于接触区域(1001)的上游。利用该极耳抚平装置(10)，既能将极耳(310)的翻折部分抚平，以解决极耳(310)成型后出现的翻折、塌边或弯曲的问题，又能避免极耳(310)的翻折部分被卡住。

Description

极耳抚平装置 技术领域
本申请涉及电池制造技术领域，特别是涉及一种极耳抚平装置。
背景技术
电池被广泛应用于车辆、船舶或飞行器等用电装置中。为了提高电池能量密度，电池的极片上的集流体趋于越来越薄的趋势，然而，更薄的集流体会导致极耳成型后容易翻折、塌边或弯曲。
发明内容
基于此，有必要针对极耳成型后容易翻折、塌边或弯曲的问题，提供一种极耳抚平装置。
本申请提供了一种极耳抚平装置，包括用于输送极片的辊、罩体以及抚平部。辊的表面在接触区域与极片接触，罩体围绕于接触区域的外周，且包括朝向接触区域的入料导向面。抚平部凸出设置于入料导向面上，并与极片的极耳位置相对，抚平部形成有极耳导向面；并且，沿极片的入料方向，抚平部至少部分位于接触区域的上游。
在本申请的技术方案中，极耳抚平装置使用时，可通过辊输送极片，以使极片的极耳能够穿入辊和极耳导向面之间，在极片的极耳穿入辊和极耳导向面之间的过程中，因沿极片的入料方向，抚平部至少部分位于接触区域的上游，且由于抚平部与极片的极耳位置相对，如此，随着极片的逐步穿入，抚平部能够对该极片的极耳施加使极耳的翻折部分平展的抚平力，这个过程中，抚平部施加于极片的极耳的抚平力早于极片设置该极耳的部分穿入极耳导向面和辊上位于接触区域的位置处之间，可以理解，一方面，在抚平部对极耳抚平的过程中，极耳距离辊的接触区域较远，极耳不容易卡在抚平部和辊之间，使得极耳能够很好地在辊的带动下沿入料方向移动并被抚平部抚平；另一方面，极片设置该极耳的部分与辊的接触区域接触之前，该极耳已大致平展，极耳在穿入极耳导向面和辊上位于接触区域的位置处之间的过程中不容易卡在抚平部和辊之间，如此，既能将极耳的翻折部分抚平，以解决极耳成型后出现的翻折、塌边或弯曲的问题，又能避免极耳的翻折部分被卡住。
在其中一个实施例中，接触区域包括卷入极片的入料位置，入料导向面的自由端与极片的间距，大于入料导向面在入料位置处与极片的间距。如此，在极片沿入料方向穿入辊和极耳导向面之间的过程中，凸设于入料导向面的抚平部与极片的极耳的间距会减小，能更好地使极耳的翻折部分平展，起到逐步将极片的极耳抚平的作用。
在其中一个实施例中，自由端沿第一方向指向入料导向面在入料位置处，第一方向与极片的入料方向之间呈锐角α 1设置。可以理解，在极片沿入料方向穿入辊和极耳导向面之间的过程中，凸设于入料导向面的抚平部与极片的极耳的间距会逐渐减小，可使极耳的翻折部分逐渐平展，能更缓和地且逐步地将极片的极耳抚平，避免在抚平过程中损坏极耳，极耳的抚平效果较佳。
在其中一个实施例中，α 1为1°-45°。能利用抚平部较好地对极耳进行抚平作业。
在其中一个实施例中，α 1为7°-15°。如此设置，既能保证极耳顺利地穿入辊和极耳导向面之间，又能在最佳的切入角度穿入辊和极耳导向面之间，抚平效果较好。
在其中一个实施例中，极耳导向面设于抚平部远离入料导向面的一侧，入料导向面与极耳导向面之间的夹角为α 2，α 1大于α 2。可以理解，抚平部远离入料导向面的一侧与穿入辊和极耳导向面之间的极耳具有一定的间隔，且该间隔逐渐减小，以保证抚平部能更缓和地且逐步地将极片的极耳抚平。
在其中一个实施例中，入料导向面的自由端与极片的间距为H 1，其中，极片的极耳的宽度为D，H 1≥1.25×D。可以理解的是，极耳的翻转部分向上翻折的高度不会大于极耳的宽度，设置H 1≥1.25×D，可更好地保证入料导向面上凸设的抚平部能够与极耳的翻转部分接触，以对极耳的翻折部分施加使之平展的抚平力，有利于提高抚平效果。
在其中一个实施例中，入料导向面在入料位置处与极片的间距为H 2，H 2为0-3mm。如此设置，既能避免因加工误差而卡住极片，又能保证极耳的抚平效果。
在其中一个实施例中，抚平部包括间隔布设于入料导向面的多个抚平齿条，每一抚平齿条由入料导向面的自由端朝向入料导向面在入料位置处延伸。利用多个抚平齿条能够更全面地接触极耳的翻折部分，以更好地对极耳的翻折部分进行抚平作业。
在其中一个实施例中，每一抚平齿条包括斜齿段，斜齿段在极片的宽度方向上倾斜设置。如此设置，可使同一斜齿段能更全面地接触极耳的翻折部分，以保证多个抚平齿条能够更全面地对极耳施加使极耳的翻折部分平展的抚平力，提高极耳的抚平效果。
在其中一个实施例中，入料导向面的自由端沿第一方向指向入料导向面在入料位置处，斜齿段与第一方向之间的夹角为β，β为0°-60°。如此设置，既能保证极耳的抚平效果，又能避免在进行抚平作业时出现撞击现象。
在其中一个实施例中，至少一抚平齿条还包括直齿段，直齿段的一端与当前所在的抚平齿条中斜齿段连接，另一端沿第一方向延伸至入料导向面的自由端。沿第一方向延伸的直齿段能接触极耳向上翻折的部分，随着极耳的穿入，可利用直齿段把极耳向上翻折的部分向下压，并借助于斜齿段逐步对极耳进行抚平，以提高极耳的抚平效果。
在其中一个实施例中，多个抚平齿条在入料导向面上排列的宽度尺寸为W 1，W 1大于极耳的宽度。其中，极耳的宽度为极耳在平行于极片的宽度方向上的尺寸。极耳的翻折部分 在平行于极片的宽度方向上的尺寸不会大于极耳的宽度。设置W 1大于极耳的宽度，可以保证多个抚平齿条能够更全面地接触极耳的翻折部分，以对极耳的翻折部分进行抚平作业，提高极耳的抚平效果。
在其中一个实施例中，相邻的两个抚平齿条的间距为W 2，W 2为3mm-5mm。既能保证极耳的抚平效果，又不容易夹住极耳。
在其中一个实施例中，罩体还包括与入料导向面相连的弧形包角面，弧形包角面与辊的外周壁间隙配合。利用入料导向面上凸设的抚平部对极耳的翻折部分进行抚平后，极片的极耳能够穿入弧形包角面和辊的外周壁之间，弧形包角面能够对极片的极耳进行导向，以提高极耳的抚平效果。
在其中一个实施例中，罩体还包括出料导向面，出料导向面和入料导向面分别连接于弧形包角面弧长方向的两端。设置的出料导向面可在极片出现倒带的过程中，引导极片穿入出料导向面和辊之间。
在其中一个实施例中，入料导向面的自由端设有朝远离极片的一侧向外延伸的第一外翻弧形面，入料导向面沿第一外翻弧形面的切线方向设置。呈弧形设置的第一外翻弧形面能很好地保护穿入的极片，避免出现撞伤极片的情况。
附图说明
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1示出了本申请一实施例中的极耳抚平装置的结构示意图；
图2示出了本申请一实施例中的极耳抚平装置的侧视图；
图3示出了本申请一实施例中的极耳抚平结构的结构示意图；
图4示出了本申请一实施例中的极耳抚平结构的侧视图；
图5示出了本申请一实施例中的极耳抚平结构的仰视图；
图6示出了本申请另一实施例中的极耳抚平装置的结构示意图；
图7示出了本申请另一实施例中的极耳抚平装置的侧视图；
图8示出了本申请另一实施例中的极耳抚平结构的侧视图。
10、极耳抚平装置；100、辊；1001、接触区域；110、固定轴；120、转辊；200、极耳抚平结构；210、罩体；211、入料导向面；2111、自由端；212、弧形包角面；213、出料导向面；214、第一外翻弧形面；215、第二外翻弧形面；216、第一安装孔；217、螺栓；220、抚平部；2201、极耳导向面；221、抚平齿条；2211、斜齿段；2212、直齿段；230、安装座；300、极片；310、极耳。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文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；本文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。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“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，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，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：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“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)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，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实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
电池被广泛应用于车辆、船舶或飞行器等用电装置中。为了提高电池能量密度，电池的极片上的集流体趋于越来越薄的趋势，然而，更薄的集流体会导致极耳成型后容易翻折、塌边或弯曲。
本申请的发明人经过研究发现，相关技术中，会使极片从两个限位部件之间穿过，以对极耳进行抚平。然而，这种方式会导致极耳的翻折部分容易卡在两个限位部件之间，进而导致极耳损坏。
基于此，本申请的发明人经过深入研究，设计了一种能够使极耳的翻折部分抚平的极耳抚平装置，既能利用该极耳抚平装置对极耳的翻折部分进行抚平，又不会导致极耳的翻折部分被卡住，能有效地对极耳进行抚平。
本申请实施例公开的极耳抚平装置可以但不限用于电池的生产中。电池可以是电池单体、电池模组也可以是电池包。可以使用具备本申请公开的极耳抚平装置对极耳进行抚平，有利于提高电池的生产质量和提高电池的安全性能。
图1示出了本申请一实施例中的极耳抚平装置10的结构示意图，图2示出了本申请一实施例中的极耳抚平装置10的侧视图。
请参阅图1及图2，极耳抚平装置10包括辊100和极耳抚平结构200。
其中，辊100包括固定轴110和设置于固定轴110的转辊120，固定轴110可安装于合适的安装架上，转辊120能够相对于固定轴110转动，可通过驱动机构驱动转辊120转动，进而输送极片300，以便利用极耳抚平结构200对输送的极片300的极耳310进行抚平作业。
图3示出了本申请一实施例中的极耳抚平结构200的结构示意图。
在本申请的一些实施例中，请参阅图1-3，本申请一实施例提供的极耳抚平装置10，包括用于输送极片300的辊100，以及极耳抚平结构200。辊100的表面在接触区域1001与极片300接触，极耳抚平结构200包括罩体210及抚平部220。罩体210围绕于接触区域1001的外周，罩体210包括朝向接触区域1001的入料导向面211。抚平部220凸出设置于入料导向面211上，并与极片300的极耳310位置相对，抚平部220形成有极耳导向面2201；并且，沿极片300的入料方向，抚平部220至少部分位于接触区域1001的上游。
上述“罩体210”是指能够围绕于辊100的外周且能安装于辊100的部件。罩体210大致呈板状，罩体210可以包括弯曲板部，也可以包括直板部，也可以既包括弯曲板部，又包括直板部，在此不作具体限制。
上述“抚平部220”是指凸设于入料导向面211上且能够形成极耳导向面2201的部件，以能够对输送的极片300的极耳310施加使极耳310的翻折部分平展的抚平力。示例性地，抚平部220大致呈梳齿状，可以对输送的极片300的极耳310施加使极耳310的翻折部分平展的抚平力。
上述“入料导向面211”是指能够对穿入辊100和入料导向面211之间的极耳310起导向作用的面。
上述“自由端2111”是指入料导向面211上远离接触区域1001的一侧，极耳310可经过入料导向面211的自由端2111，并穿入接触区域1001和抚平部220之间。
上述“接触区域1001”是指辊100的表面中能够与极片300大致接触的区域，且抚平部220能够至少部分位于接触区域1001的上游，以便更好地利用抚平部220对极片300的极耳310进行抚平作业。示例性地，极片300可在辊100的输送下绕设于辊100的表面，以与该接触区域1001接触，接触区域1001包括辊100的表面上被极片300绕设的部分。当然，极片300也可以采用其他方式与接触区域1001接触，在此不作具体限制。
上述“极耳导向面2201”是指能够对极片300的极耳310施加使极耳310的翻折部分平展的抚平力的面。极耳导向面2201可以是一整个面，也可以由多个彼此独立的面组成，也可以是由多个线状部组成的非连续的面，在此不作具体限制。
该极耳抚平装置10使用时，可通过辊100输送极片300，以使极片300的极耳310能够穿入辊100和极耳导向面2201之间，在极片300的极耳310穿入辊100和极耳导向面2201之间的过程中，因沿极片300的入料方向，抚平部220至少部分位于接触区域1001的上游，且由于抚平部220与极片300的极耳310位置相对，如此，随着极片300的逐步穿入，抚平部220能够对该极片300的极耳310施加使极耳310的翻折部分平展的抚平力，这个过程中，抚平部220施加于极片300的极耳310的抚平力早于极片300设置该极耳310的部分穿入极耳导向面2201和辊100上位于接触区域1001的位置处之间，可以理解，一方面，在抚平部220对极耳310抚平的过程中，极耳310距离辊100的接触区域1001较远，极耳310不容易卡在抚平部220和辊100之间，使得极耳310能够很好地在辊100的带动下沿入料方向F 入料移动并被抚平部220抚平；另一方面，极片300设置该极耳310的部分与辊100的接触区域1001接触之前，该极耳310已大致平展，极耳310在穿入极耳导向面2201和辊100上位于接触区域1001的位置处之间的过程中不容易卡在抚平部220和辊100之间，如此，既能将极耳310的翻折部分抚平，以解决极耳310成型后出现的翻折、塌边或弯曲的问题，又能避免极耳310的翻折部分被卡住。
需要说明的是，在极片300穿入之前，使极片300的极耳310的翻折部分呈朝上翻折状态，以便利用围绕于辊100的极耳抚平结构200对极片300的极耳310进行抚平作业。
在本申请的一些实施例中，请参阅图2及图3，接触区域1001包括卷入极片300的入料位置，入料导向面211的自由端2111与极片300的间距，大于入料导向面211在入料位置处与极片300的间距。
结合图2，入料导向面211的自由端2111与极片300的间距为H 1，入料导向面211在入料位置处与极片300的间距H 2，即H 1>H 2。
如此，在极片300沿入料方向F 入料穿入辊100和极耳导向面2201之间的过程中，凸设于入料导向面211的抚平部220与极片300的极耳310的间距会减小，能更好地使极耳310的翻折部分平展，起到逐步将极片300的极耳310抚平的作用。
在本申请的一些实施例中，请参阅图2及3，自由端2111沿第一方向F 1指向入料导 向面211在入料位置处，第一方向F 1与极片300的入料方向F 入料之间呈锐角α 1设置。
结合图3，入料导向面211在入料位置处大致对应于图3中a处。
可以理解，在极片300沿入料方向F 入料穿入辊100和极耳导向面2201之间的过程中，凸设于入料导向面211的抚平部220与极片300的极耳310的间距会逐渐减小，可使极耳310的翻折部分逐渐平展，能更缓和地且逐步地将极片300的极耳310抚平，避免在抚平过程中损坏极耳310，极耳310的抚平效果较佳。
在本申请的一些实施例中，α 1为1°-45°，能利用抚平部220较好地对极耳310进行抚平作业。
在一些实施例中，α 1为1°-30°，α 1过大，导致极耳310未在最佳的切入角度穿入辊100和极耳导向面2201之间，抚平效果不佳；α 1过小，会影响极耳310穿入辊100和极耳导向面2201之间；基于此，α 1为需设置在适宜的范围内，比如α 1设置为1°-30°，既能保证极耳310顺利地穿入辊100和极耳导向面2201之间，又能在最佳的切入角度穿入辊100和极耳导向面2201之间，抚平效果较好。
上述的“切入角度”是指α 1。
在本申请的一些实施例中，α 1为7°-15°，利用抚平部220能够使极耳310的翻折部分逐渐平展，抚平效果较好。
在本申请的一些实施例中，请参阅图2及图4，极耳导向面2201设于抚平部220远离入料导向面211的一侧，入料导向面211与极耳导向面2201之间的夹角为α 2，α 1大于α 2。
可以理解的是，极耳导向面2201与极片300的入料方向F 入料之间呈锐角α 0设置，且α 0＝α 1-α 2，如此，可使极耳导向面2201与穿入辊100和极耳导向面2201之间的极耳310具有一定的间隔，且该间隔逐渐减小，以保证抚平部220能更缓和地且逐步地将极片300的极耳310抚平。
α 2为1°-10°。α 2过大，导致α 0过小，会影响极耳310的穿入，α 2过小，导致α 0过大，进而导致极耳导向面2201与穿入的极耳310之间的间隔过大，影响抚平效果，基于此，α 2需控制在适宜的范围内，如将α 2设置为1°-10°，且使α 2小于α 1，如此，既能保证极耳310顺利地穿入辊100和极耳导向面2201之间，又能利用抚平部220将极片300的极耳310缓和地、逐步地抚平。
在本申请的一些实施例中，请参阅图1-3，入料导向面211的自由端2111与极片300的间距为H 1，其中，极片300的极耳310的宽度为D，H 1≥1.25×D；极耳310的宽度为极耳310在平行于极片300的宽度方向上的尺寸。
极片300的宽度方向垂直于极片300的长度方向，使H 1≥1.25×D，也就是使入料导向面211的自由端2111与极片300的间距大于极耳310的宽度的1.25倍。
可以理解的是，极耳310的翻转部分向上翻折的高度不会大于极耳310的宽度，设置 H 1≥1.25×D，可更好地保证入料导向面211上凸设的抚平部220能够与极耳310的翻转部分接触，以对极耳310的翻折部分施加使之平展的抚平力，有利于提高抚平效果。
在一些实施例中，请参阅图2及图4，入料导向面211沿第一方向F 1的尺寸为L 1，L 1与α 1大致呈反比，如此，可保证极耳310在最佳的切入角度穿入辊100和极耳导向面2201之间，且经由合适长度的抚平部220进行抚平作业，使得极耳310的抚平效果较好。
在本申请的一些实施例中，入料导向面211在入料位置处与极片300的间距为H 2，H 2为0-3mm。
若H 2过小，会因加工误差而卡住极片300，若H 2过大，会影响极耳310的抚平效果。
因此，需将H 2控制在适宜的范围内，如H 2设置为0-3mm。具体地，H 2为1mm左右。
在本申请的一些实施例中，请参阅图3，抚平部220包括间隔布设于入料导向面211的多个抚平齿条221，每一抚平齿条221由入料导向面211的自由端2111朝向入料导向面211在入料位置处延伸。
“抚平齿条221”是指凸设于入料导向面211且由自由端2111朝向入料导向面211在入料位置处延伸的条状部件，抚平齿条221大致呈梳齿状，能够对极耳310施加使极耳310的翻折部分平展的抚平力。
利用多个抚平齿条221能够更全面地接触极耳310的翻折部分，以更好地对极耳310的翻折部分进行抚平作业。
在本申请的一些实施例中，请参阅图3及图5，每一抚平齿条221包括斜齿段2211，斜齿段2211在极片300的宽度方向上倾斜设置。
抚平齿条221的斜齿段2211是指抚平齿条221上与第一方向F 1之间呈角度设置的部分。抚平齿条221的斜齿段2211沿第二方向F 2延伸，第二方向F 2与第一方向F 1之间呈角度设置，且第二方向F 2平行于入料导向面211，具体到如图3及图5所示的实施例中，第一方向F 1为入料导向面211的长度方向，入料导向面211的宽度方向平行于极片300的宽度方向，第二方向F 2既相对于入料导向面211的长度方向倾斜设置，也相对于入料导向面211的宽度方向倾斜设置。
斜齿段2211在极片300的宽度方向上倾斜设置，如此设置，可使同一斜齿段2211能更全面地接触极耳310的翻折部分，以保证多个抚平齿条221能够更全面地对极耳310施加使极耳310的翻折部分平展的抚平力，提高极耳310的抚平效果。
在本申请的一些实施例中，请参阅图3及图5，入料导向面211的自由端2111沿第一方向F 1指向入料导向面211在入料位置处，斜齿段2211与第一方向F 1之间的夹角为β，β为0°-60°。
如前述所述，入料导向面211在入料位置处大致对应于图3中a处，结合β设置在适宜的范围内(0°-60°)，如此，既能保证极耳310的抚平效果，又能避免在进行抚平作业时出 现撞击现象。
在一些实施例中，β为5°-60°，若β过小，极耳310穿入过程中需要走很长的距离才能使斜齿段2211全面接触到极耳310的翻折部分，极耳310的抚平效果不好，且抚平效率较低，也会影响调试效率；若β过大，斜齿段2211较快地接触到极耳310的翻折部分，容易形成撞击；基于此，β需设置在适宜的范围内，如将β设置为5°-60°，既能保证极耳310的抚平效果，又能避免在进行抚平作业时出现撞击现象。
在本申请的一些实施例中，请参阅图5，至少一抚平齿条221还包括直齿段2212，直齿段2212的一端与当前所在的抚平齿条221中斜齿段2211连接，另一端沿第一方向F 1延伸至入料导向面211的自由端2111。
直齿段2212大致平行于第一方向F 1，第一方向F 1为入料导向面211的长度方向。
“至少一抚平齿条221还包括直齿段2212”可以是其中一抚平齿条221还包括直齿段2212，也可以是其中多个抚平齿条221均包括直齿段2212，也可以是全部抚平齿条221均包括直齿段2212，在此不作具体限制。
如此，沿第一方向F 1延伸的直齿段2212能接触极耳310向上翻折的部分，随着极耳310的穿入，可利用直齿段2212把极耳310向上翻折的部分向下压，并借助于斜齿段2211逐步对极耳310进行抚平，以提高极耳310的抚平效果。
在本申请的一些实施例中，请参阅图5，多个抚平齿条221在入料导向面211上排列的宽度尺寸为W 1，W 1大于极耳310的宽度。其中，极耳310的宽度为极耳310在平行于极片300的宽度方向上的尺寸。
多个抚平齿条221在入料导向面211上排列的宽度尺寸是指多个抚平齿条221在入料导向面211上沿第三方向F 3的占用尺寸，第三方向F 3垂直于第一方向F 1，且平行于入料导向面211，具体到如图5所示的实施例中，第一方向F 1为入料导向面211的的长度方向，第三方向F 3为入料导向面211的宽度方向。
可以理解的是，极耳310的翻折部分在平行于极片300的宽度方向上的尺寸不会大于极耳310的宽度。如此，设置W 1大于极耳310的宽度，可以保证多个抚平齿条221能够更全面地接触极耳310的翻折部分，以对极耳310的翻折部分进行抚平作业，提高极耳310的抚平效果。
在本申请的一些实施例中，请参阅图5，相邻的两个抚平齿条221的间距为W 2，W 2为3mm-5mm。
若W 2过小，则不利于加工，且相邻的两个抚平齿条221容易夹住极耳310而形成撕扯，若过大，则会影响抚平效果，故W 2需设置在适宜的范围，如设置为3mm-5mm，既能保证极耳310的抚平效果，又不容易夹住极耳310。
在本申请的一些实施例中，请参阅图4，并结合参阅图6-图8，罩体210还包括与入 料导向面211相连的弧形包角面212，弧形包角面212与辊100的外周壁间隙配合。
“弧形包角面212”是指与入料导向面211相连且能够与辊100的外周壁间隙配合的圆弧面。
利用入料导向面211上凸设的抚平部220对极耳310的翻折部分进行抚平后，极片300的极耳310能够穿入弧形包角面212和辊100的外周壁之间，弧形包角面212能够对极片300的极耳310进行导向，以提高极耳310的抚平效果。
在本申请的一些实施例中，请参阅图4及图8，罩体210还包括出料导向面213，出料导向面213和入料导向面211分别连接于弧形包角面212弧长方向的两端。
上述“出料导向面213”是指引导极耳310经过出料导向面213和辊100之间的区域并穿出的面。
一方面，在抚平部220对极耳310的翻折部分进行抚平以及弧形包角面212对极片300的极耳310进行导向后，极片300在出料导向面213的引导下经过出料导向面213和辊100之间的区域并穿出。另一方面，极片300通常卷绕在极片卷轴上，极片300的一端经由辊100输送，这个过程中，极片300难免出现张力调整过程，会导致极片300出现倒带状况，如此，设置的出料导向面213可在极片300出现倒带的过程中，引导极片300穿入出料导向面213和辊100之间。
在本申请的一些实施例中，请参阅图2及图7，出料导向面213与极片300的出料方向之间呈锐角α 3设置，其中，α 3为1°-45°。可以理解的是，极片300的出料方向平行于极片300的入料方向F 入料，那么，出料导向面213与极片300的入料方向F 入料之间也呈锐角α 3设置，α 3设置为1°-45°，既能保证极片300能顺利地穿出，又能在极片300倒带过程中防止出料导向面213撞断极片300。
在一些实施例中，请参阅图4及图8，出料导向面213沿出料导向面213的长度方向的尺寸为L 2，L 2与α 3大致呈反比。
在一些实施例中，请参阅图2及图7，出料导向面213的出料侧与极片300之间的间距为H 3，同理，H 3≥1.25×D，可在极片300倒带过程中更好地防止出料导向面213撞断极片300。
在本申请的一些实施例中，请参阅图4及图8，出料导向面213和入料导向面211呈角度γ设置，γ为20°-110°。
若γ过小，容易出现卡住极耳310的情况，若γ过大，极耳抚平结构200的抚平效果不佳，故需要将γ设置在适宜的范围内，既能保证较佳的抚平效果，又能避免出现卡住极耳310的情况。
在本申请的一些实施例中，请参阅图4及图8，入料导向面211的自由端2111设有朝远离极片300的一侧向外延伸的第一外翻弧形面214，入料导向面211沿第一外翻弧形面214 的切线方向设置。
可以理解，呈弧形设置的第一外翻弧形面214能很好地保护穿入的极片300，避免出现撞伤极片300的情况。
在本申请的一些实施例中，请参阅图4及图8，出料导向面213远离弧形包角面212的一侧设有朝远离极片300的一侧向外延伸的第二外翻弧形面215，出料导向面213沿第二外翻弧形面215的切线方向设置。
可以理解，呈弧形设置的第二外翻弧形面215能很好地保护在倒带过程中反向穿入的极片300，避免出现撞伤极片300的情况。
在本申请的一些实施例中，请参阅图1及图3，极耳抚平装置10还包括安装座230，安装座230是指能够将罩体210设置于辊100上且使罩体210围绕于辊100的外周的部件，示例性地，安装座230套设于辊100的固定轴110，罩体210上设有第一安装孔216，安装座230上设有第二安装孔，罩体210和安装座230借助于第一安装孔216和第二安装孔连接，以将罩体210设置于辊100上且使罩体210围绕于辊100的外周。其中，第一安装孔216和第二安装孔可为螺纹孔，罩体210可通过与该螺纹孔相匹配的螺栓217设置于辊100上。
在本申请的一些实施例中，请参阅图1-5，极耳抚平装置10包括辊100和极耳抚平结构200，极耳抚平结构200包括罩体210及抚平部220。辊100的表面在接触区域1001与极片300接触，罩体210围绕于接触区域1001的外周，罩体210包括朝向接触区域1001的入料导向面211，抚平部220凸出设置于入料导向面211上，并与极片300的极耳310位置相对，抚平部220形成有极耳导向面2201；并且，沿极片300的入料方向，抚平部220至少部分位于接触区域1001的上游。入料导向面211的自由端2111与极片300的间距(H 1)，大于入料导向面211在入料位置处与极片300的间距(H 2)。
如此设置，在极片300沿入料方向F 入料穿入辊100和极耳导向面2201之间的过程中，凸设于入料导向面211的抚平部220与极片300的极耳310的间距也会减小，能更好地使极耳310的翻折部分平展，起到逐步将极片300的极耳310抚平的作用。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (17)

  1. 一种极耳抚平装置，其特征在于，包括：
    用于输送极片(300)的辊(100)；所述辊(100)的表面在接触区域(1001)与所述极片(300)接触；
    罩体(210)，围绕于所述接触区域(1001)的外周，且包括朝向所述接触区域(1001)的入料导向面(211)；以及
    抚平部(220)，凸出设置于所述入料导向面(211)上，并与所述极片(300)的极耳(310)位置相对，所述抚平部(220)形成有极耳导向面(2201)；并且，沿所述极片(300)的入料方向，所述抚平部(220)至少部分位于所述接触区域(1001)的上游。
  2. 根据权利要求1所述的极耳抚平装置，其特征在于，所述接触区域(1001)包括卷入所述极片(300)的入料位置；所述入料导向面(211)的自由端(2111)与所述极片(300)的间距，大于所述入料导向面(211)在所述入料位置处与所述极片(300)的间距。
  3. 根据权利要求2所述的极耳抚平装置，其特征在于，所述自由端(2111)沿第一方向指向所述入料导向面(211)在所述入料位置处，所述第一方向与所述极片(300)的入料方向之间呈锐角α 1设置。
  4. 根据权利要求3所述的极耳抚平装置，其特征在于，所述α 1为1°-45°。
  5. 根据权利要求4所述的极耳抚平装置，其特征在于，所述α 1为7°-15°。
  6. 根据权利要求3所述的极耳抚平装置，其特征在于，所述极耳导向面(2201)设于所述抚平部(220)远离所述入料导向面(211)的一侧，所述入料导向面(211)与所述极耳导向面(2201)之间的夹角为α 2，所述α 1大于所述α 2。
  7. 根据权利要求2-6任一项所述的极耳抚平装置，其特征在于，所述入料导向面(211)的自由端(2111)与所述极片(300)的间距为H 1；
    其中，所述极片(300)的极耳(310)的宽度为D，H 1≥1.25×D；
    所述极耳(310)的宽度为所述极耳(310)在平行于所述极片(300)的宽度方向上的尺寸。
  8. 根据权利要求2-7任一项所述的极耳抚平装置，其特征在于，所述入料导向面(211)在所述入料位置处与所述极片(300)的间距为H 2，H 2为0-3mm。
  9. 根据权利要求2-8任一项所述的极耳抚平装置，其特征在于，所述抚平部(220)包括间隔布设于所述入料导向面(211)的多个抚平齿条(221)，每一所述抚平齿条(221)由所述入料导向面(211)的自由端(2111)朝向所述入料导向面(211)在所述入料位置处延伸。
  10. 根据权利要求9所述的极耳抚平装置，其特征在于，每一所述抚平齿条(221)包括斜齿段(2211)，所述斜齿段(2211)在所述极片(300)的宽度方向上倾斜设置。
  11. 根据权利要求10所述的极耳抚平装置，其特征在于，所述入料导向面(211)的自由端(2111)沿第一方向指向所述入料导向面(211)在所述入料位置处；
    所述斜齿段(2211)与所述第一方向之间的夹角为β，β为0°-60°。
  12. 根据权利要求11所述的极耳抚平装置，其特征在于，至少一所述抚平齿条(221)还包括直齿段(2212)；
    所述直齿段(2212)的一端与当前所在的所述抚平齿条(221)中所述斜齿段(2211)连接，另一端沿所述第一方向延伸至所述入料导向面(211)的自由端(2111)。
  13. 根据权利要求9所述的极耳抚平装置，其特征在于，所述多个抚平齿条(221)在所述入料导向面(211)上排列的宽度尺寸为W 1，所述W 1大于所述极耳(310)的宽度；
    其中，所述极耳(310)的宽度为所述极耳(310)在平行于所述极片(300)的宽度方向上的尺寸。
  14. 根据权利要求9所述的极耳抚平装置，其特征在于，相邻的两个所述抚平齿条(221)的间距为W 2，所述W 2为3mm-5mm。
  15. 根据权利要求1-14任一项所述的极耳抚平装置，其特征在于，所述罩体(210)还包括与所述入料导向面(211)相连的弧形包角面(212)，所述弧形包角面(212)与所述辊(100)的外周壁间隙配合。
  16. 根据权利要求15所述的极耳抚平装置，其特征在于，所述罩体(210)还包括出料导向面(213)，所述出料导向面(213)和所述入料导向面(211)分别连接于所述弧形包角面(212)弧长方向的两端。
  17. 根据权利要求1-16任一项所述的极耳抚平装置，其特征在于，所述入料导向面(211)的自由端(2111)设有朝远离所述极片(300)的一侧向外延伸的第一外翻弧形面(214)，所述入料导向面(211)沿所述第一外翻弧形面(214)的切线方向设置。
PCT/CN2022/095166 2022-05-26 2022-05-26 极耳抚平装置 WO2023225928A1 (zh)

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CN111342000A (zh) * 2019-11-18 2020-06-26 四川新敏雅电池科技有限公司 一种极片防死褶装置
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JP2021086698A (ja) * 2019-11-27 2021-06-03 Ckd株式会社 巻回装置及び巻回素子の製造方法
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CN111342000A (zh) * 2019-11-18 2020-06-26 四川新敏雅电池科技有限公司 一种极片防死褶装置
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