WO2023137639A1 - 卷绕装置和卷绕设备 - Google Patents

卷绕装置和卷绕设备 Download PDF

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Publication number
WO2023137639A1
WO2023137639A1 PCT/CN2022/072826 CN2022072826W WO2023137639A1 WO 2023137639 A1 WO2023137639 A1 WO 2023137639A1 CN 2022072826 W CN2022072826 W CN 2022072826W WO 2023137639 A1 WO2023137639 A1 WO 2023137639A1
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WO
WIPO (PCT)
Prior art keywords
push block
inner needle
winding device
needle
adjusting rod
Prior art date
Application number
PCT/CN2022/072826
Other languages
English (en)
French (fr)
Inventor
张威
张小畏
吴翔
温裕乾
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 CN202280008031.4A priority Critical patent/CN116802879A/zh
Priority to EP22879624.9A priority patent/EP4243152A1/en
Priority to PCT/CN2022/072826 priority patent/WO2023137639A1/zh
Priority to US18/215,808 priority patent/US11894509B2/en
Publication of WO2023137639A1 publication Critical patent/WO2023137639A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—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
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/40—Holders, supports for rolls
    • B65H2405/46—Grippers for bobbins, i.e. rolls
    • B65H2405/461—Grippers for bobbins, i.e. rolls center gripper (inside the core)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the field of battery technology, in particular to a winding device and winding equipment.
  • the winding device can wind the electrode assembly, so that the electrode assembly has a wound structure.
  • the winding device may include an inner needle and an outer needle, wherein the inner needle can be used to clamp the electrode assembly during the winding process, and the outer needle can be used to receive the rest of the electrode assembly so that the electrode assembly can be wound around the outer periphery of the outer needle. After winding, the inner needle can loosen the electrode assembly, and the outer needle can shrink to reduce the outer diameter of the outer needle, so that the electrode assembly can be separated from the winding device.
  • the cooperative movement between the inner needle and the outer needle may cause a series of process problems, which in turn may reduce the yield or performance of the wound electrode assembly.
  • the present application provides a winding device and a winding device, with the purpose of improving the yield or performance of a wound electrode assembly.
  • a winding device comprising: a first inner needle and a second inner needle oppositely arranged for clamping an electrode assembly; a first outer needle and a second outer needle oppositely arranged, the outer circumferences of the first outer needle and the second outer needle are used for winding the electrode assembly; the winding device further includes a first slider and a first push block, the first push block is fixedly connected to the first inner needle, the first push block is provided with a first sliding slot, the first sliding block is movable in the first sliding slot, and the first sliding block is configured to reciprocate in a first direction, The extension direction of the first chute is inclined to the first direction, so that the first push block drives the first inner needle to reciprocate along the second direction to clamp or loosen the electrode assembly.
  • the second direction is perpendicular to the first direction;
  • the winding device also includes a second slide block and a second push block, the second push block is fixedly connected with the first outer needle, and the second push block is provided with a second slide slot.
  • the second slide block is movable in the second slide slot. direction, so that the second push block drives the first outer needle to reciprocate in a fourth direction to expand or reduce the distance between the first outer needle and the second outer needle, the third direction is parallel to the first direction, and the fourth direction is perpendicular to the third direction.
  • the first inner needle and the first outer needle can be controlled independently through the cooperation of the first slider and the first chute of the first push block, and the cooperation of the second slider and the second chute of the second push block.
  • the inner needle can first loosen the electrode assembly, and then the outer needle reduces the outer circumference, which is beneficial to reduce the possibility of the electrode assembly being pulled by the convex corner of the outer needle, thereby improving the processing quality and performance of the electrode assembly.
  • the winding device further includes: a first adjusting rod arranged parallel to the first direction, fixedly connected to the first slider, configured to reciprocate along the first direction to drive the first slider to reciprocate along the first direction; a second adjusting rod arranged parallel to the third direction, fixedly connected to the second slider, configured to reciprocate along the third direction to drive the second slider to reciprocate along the third direction.
  • the first sliding block and the second sliding block can be independently driven at a position far away from the first sliding block and the second sliding block, which is beneficial to improve the flexibility of driving the first sliding block and the second sliding block.
  • the second adjusting rod and the second slider are fixedly connected by a first connecting shaft
  • the first adjusting rod includes a through hole of the first adjusting rod
  • the first connecting shaft passes through the through hole of the first adjusting rod, and can reciprocate in the through hole of the first adjusting rod along the third direction.
  • the first adjustment rod in order to enable the first slider and the second slider to move independently, can be provided with a first adjustment rod through hole that can move the first connection shaft, so that the first connection shaft and the second slider can reciprocate along the third direction relative to the first adjustment rod, which is beneficial for the second slider to break away from the linkage relationship with the first adjustment rod.
  • the through hole of the first adjusting rod can also constitute a moving track of the first connecting shaft.
  • the through hole of the first adjusting rod can be beneficial to reduce the movement offset of the second sliding block.
  • a dimension of the through hole of the first adjustment rod along the third direction is greater than or equal to a movement stroke of the second slider along the third direction.
  • the first adjusting rod and the first slider are fixedly connected by a second connecting shaft
  • the second adjusting rod includes a through hole of the second adjusting rod
  • the second connecting shaft passes through the through hole of the second adjusting rod, and can reciprocate along the first direction in the through hole of the second adjusting rod.
  • the second adjustment rod in order to enable the first slider and the second slider to move independently, can be provided with a second adjustment rod through hole that can move the second connecting shaft, so that the second connecting shaft together with the first slider can move back and forth along the first direction relative to the second adjusting rod, which is beneficial for the first slider to break away from the linkage relationship with the second adjusting rod.
  • the through hole of the second adjusting rod can also constitute a moving track of the second connecting shaft. The through hole of the second adjusting rod can help reduce the displacement of the first slider.
  • the size of the second adjustment rod through hole along the first direction is greater than or equal to the movement stroke of the first slider along the first direction.
  • an adjustment rod protrusion is provided at one end of the second adjustment rod, and the adjustment rod protrusion protrudes toward the first adjustment rod along a direction perpendicular to the first direction.
  • the part of the second adjustment rod protruding from the first adjustment rod can correspond to the central area of the first push block, which is beneficial to reduce the possibility of direction deviation of the second adjustment rod during movement.
  • the winding device further includes: an inner needle support, the inner needle support is used to accommodate the first inner needle, the first slider, the first push block, the second slider, and the second push block, wherein the inner needle support has a first support cavity and a second support cavity, the first support cavity is used to accommodate the first push block, the opening of the second support cavity faces the first outer needle, and the second support cavity is used to accommodate the second push block.
  • the winding device further includes: a first driving rod, configured to apply a driving force along the first direction to the first adjusting rod; a second driving rod, configured to apply a driving force along the third direction to the second adjusting rod; wherein, the first driving rod and the second driving rod are located on both sides of the inner needle support.
  • the first slider and the second slider can be driven separately from different positions, which is beneficial to reduce the possibility of mutual interference between the first slider and the second slider.
  • the winding device further includes: a first elastic element, configured to apply a driving force to the first adjusting rod in a direction opposite to the first direction; a second elastic element, configured to apply a driving force in a direction opposite to the third direction to the second adjusting rod.
  • the first adjusting rod and the second adjusting rod can return to their original positions after moving.
  • the winding device further includes: a needle holder, the needle holder has a needle holder cavity opening toward the inner needle support, the first adjusting rod extends into the needle holder cavity, and the first elastic element abuts against the bottom wall of the needle holder cavity.
  • the first elastic element abuts against the bottom wall of the cavity of the needle roller, so that the first adjusting rod can move along the first direction relative to the cavity of the needle roller.
  • the bottom wall of the needle holder cavity is provided with a needle holder through hole, and the first driving rod passes through the needle holder through hole and extends into the needle holder cavity;
  • the winding device further includes a driving slider, the driving slider is accommodated in the needle holder cavity, the driving slider is fixedly connected to the first adjusting rod, and is fixed relative to the first driving rod in the first direction, and the first elastic element abuts between the driving slider and the needle holder.
  • the winding device further includes a connecting seat, the connecting seat is located between the needle winding seat and the inner needle support and covers the opening of the cavity of the needle winding seat, the connecting seat includes a through hole of the connecting seat, and the first adjustment rod passes through the through hole of the connecting seat.
  • connection seat can be connected between the inner needle support and the needle reel seat to play a transitional role, and is beneficial to reduce the flow of particles from the needle reel seat.
  • one end of the second elastic element is fixed to the inner needle support, and the other end of the second elastic element abuts against the second adjustment rod.
  • the second adjusting rod can move relative to the inner needle support along the direction opposite to the third direction.
  • the winding device further includes: a support part, the support part is accommodated in the inner needle holder, and the support part is provided with moving grooves for the first adjustment rod and the second adjustment rod.
  • the moving groove on the supporting part it is beneficial to limit the movement of the first adjusting rod and the second adjusting rod in the first direction or the third direction, and is beneficial to reduce the possibility of deviation movement of the first adjusting rod and the second adjusting rod.
  • the support part includes a support part opening
  • the winding device further includes a third push block
  • the third push block passes through the support part opening and is fixedly connected to the second adjustment rod
  • the third push block is used to apply a driving force in the third direction to the second adjustment rod
  • the inner diameter of the support part opening in the third direction is greater than or equal to the stroke of the second adjustment rod in the third direction.
  • the opening of the support part can be used to limit the farthest stop position of the third push block, and further can be used to limit the farthest stop position of the second slide block and the second push block.
  • the inner needle bracket further includes a third chute communicating with the first bracket cavity, the main body of the first push block is accommodated in the first bracket cavity, the first push block further includes a first push block protrusion, the first push block protrusion can slide along the second direction in the third chute, and the sliding gap between the first push block protrusion and the third chute is smaller than the sliding gap between the first push block body and the first bracket cavity.
  • the degree of sliding friction between the main body of the first push block and the cavity of the first bracket may be smaller than the degree of sliding friction between the protruding portion of the first push block and the third slide groove. Therefore, the main friction area of the first push block can be concentrated on the protruding part of the first push block, which is beneficial to reduce the amount of friction that the main body of the first push block participates in.
  • the contact area between the first push block protrusion and the third chute is relatively small, so the overall friction between the first push block protrusion and the third chute is relatively small.
  • the third chute can serve as a guide rail of the first push block, for example, and the first push block push-out portion can serve as a guide rail fitting of the first push block, for example.
  • the winding device further includes a cover plate fastened to an end of the first bracket cavity and/or the third chute close to the first outer needle.
  • the inner needle bracket further includes a fourth chute communicating with the second bracket cavity
  • the main body of the second push block is accommodated in the second bracket cavity
  • the second push block further includes a second push block protrusion
  • the second push block protrusion can slide along the fourth direction in the fourth chute
  • the sliding gap between the second push block protrusion and the fourth chute is smaller than the sliding gap between the second push block body and the second bracket cavity.
  • the degree of sliding friction between the main body of the second push block and the cavity of the second bracket may be smaller than the degree of sliding friction between the protruding portion of the second push block and the fourth sliding groove. Therefore, the main friction area of the second push block can be concentrated on the protruding part of the second push block, which is beneficial to reduce the amount of friction that the main body of the second push block participates in.
  • the contact area between the second push block protrusion and the fourth chute is relatively small, so the overall friction between the second push block protrusion and the fourth chute is relatively small.
  • the fourth sliding slot can serve as a guide rail of the second push block
  • the second push block ejection portion can serve as a guide rail fitting of the second push block, for example.
  • the winding device further includes a cover plate fastened to an end of the fourth chute close to the first outer needle.
  • the opening of the first chute far away from the first slider is buckled with a cover plate; and/or, the opening of the second chute far away from the second slider is buckled with a cover plate; and/or, the inner needle support includes a first chute opening, the first chute opening is arranged opposite to the first chute on the first push block, and a cover plate is buckled on the first slider opening; and/or, the inner needle bracket includes a second chute opening, and the second chute opening is opposite to the second chute on the second push block It is provided that a cover plate is buckled on the opening of the second slider.
  • the winding device further includes: a threaded fastener, the first inner needle and the first push block are fixedly connected by the threaded fastener, the inner needle support includes a locking opening, the locking opening is arranged opposite to the threaded fastener, and a cover plate is buckled on the locking opening.
  • the first inner needle and the first push block are fixedly connected by threaded fasteners, which is beneficial to improve the connection stability between the first inner needle and the first push block.
  • the winding device further includes: a magnetic attraction component, the magnetic attraction component is disposed on the inner needle support, and the magnetic attraction component is used to absorb particles in the inner needle support.
  • the inner needle support is equipped with a magnetic attraction component, so that the magnetic attraction component can absorb the particles around the path that the particles may pass, thereby reducing the possibility of the particles falling on the electrode assembly.
  • the winding device includes at least one magnetic attraction component, and the at least one magnetic attraction component is arranged at least one of the following positions: a side of the first inner needle facing the first push block; a side of the first push block facing the first inner needle; a side of the second push block facing the inner needle support; a side of the inner needle support facing the second push block; One side of the inner needle; the side of the first inner needle close to the inner needle holder.
  • the first direction and the third direction are in the same direction, along the first direction, the first chute extends away from the second inner needle, and the second chute extends close to the second inner needle.
  • the driving directions of the first slider and the second slider are consistent, which is beneficial to reduce the number of judgments on the driving directions of the first slider and the second slider when winding the electrode assembly, and is conducive to improving the simplicity of the winding process.
  • a winding device in a second aspect, includes the winding device as described in the first aspect or any possible implementation manner of the first aspect; and a driving device, the driving device is used to drive the winding device.
  • the embodiments of the present application provide a winding device and a winding device, which have the feature of independently adjusting the circumference of the inner needle and the circumference of the outer needle.
  • the winding device and winding equipment can be applied to the winding production scene of the electrode assembly.
  • by arranging the cover plate, the magnetic component and the magnetic cover plate it is beneficial to reduce particles in the winding device from falling on the electrode assembly and improve the production quality of the electrode assembly.
  • Fig. 1 is a schematic structural diagram of a winding device provided by an embodiment of the present application
  • Fig. 2 is a schematic structural diagram of a winding device provided by an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a first inner needle assembly and a second inner needle assembly provided by an embodiment of the present application;
  • Fig. 4 is a schematic structural diagram of a first inner needle assembly and a second inner needle assembly provided by an embodiment of the present application;
  • Fig. 5 is a schematic structural diagram of a first inner needle assembly provided by an embodiment of the present application.
  • Fig. 6 is a cross-sectional view of the first inner needle assembly in Fig. 5 at section A-A;
  • Fig. 7 is a cross-sectional view of the first inner needle assembly in Fig. 5 at section B-B;
  • Figure 8 is a cross-sectional view of the first inner needle assembly in Figure 5 at section C-C;
  • Figure 9 is a cross-sectional view of the first inner needle assembly in Figure 5 at section D-D;
  • Fig. 10 is a schematic structural diagram of a first inner needle assembly provided by an embodiment of the present application.
  • Figure 11 is a cross-sectional view of the first inner needle assembly in Figure 10 at section E-E;
  • Figure 12 is a sectional view of the first inner needle assembly in Figure 10 at section F-F;
  • Fig. 13 is a cross-sectional view of a needle reel seat and a connection seat provided by an embodiment of the present application;
  • Fig. 14 is a schematic structural diagram of a needle reel seat and a connection seat provided by an embodiment of the present application.
  • Fig. 15 is a schematic structural diagram of an inner needle provided by an embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of an inner needle holder provided by an embodiment of the present application.
  • Fig. 17 is a schematic structural diagram of an inner needle holder provided by an embodiment of the present application.
  • FIG. 18 is a schematic diagram of a method for adjusting tab misalignment provided by an embodiment of the present application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary.
  • a battery refers to a physical module including one or more battery cells to provide electrical energy.
  • the batteries mentioned in this application may include battery modules or battery packs.
  • Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in this embodiment of the present application.
  • a battery cell may also be referred to as a battery cell.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative plates.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the current collector that is not coated with the positive electrode active material layer protrudes from the current collector that has been coated with the positive electrode active material layer.
  • the current collector that is not coated with the positive electrode active material layer serves as the positive electrode lug.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode current collector.
  • the current collector that is not coated with the negative electrode active material layer protrudes from the current collector that has been coated with the negative electrode active material layer.
  • the current collector that is not coated with the negative electrode active material layer serves as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the material of the isolation film may be polypropylene (Polypropylene, PP) or polyethylene (Polyethylene, PE).
  • the electrode assembly with a wound structure can be prepared by a winding device.
  • the winding device may comprise a drive device and a winding device.
  • the driving device can be used to drive the winding device to rotate, so as to realize the winding of the electrode assembly.
  • the winding device can fix the electrode assembly; through the driving device to drive the winding device to rotate, the electrode assembly can be wound on the outer periphery of the winding device, so that an electrode assembly with a wound structure can be obtained.
  • FIG. 1 is a schematic structural diagram of a winding device 10 provided by an embodiment of the present application.
  • the winding device 10 may include a first inner needle 110 and a second inner needle 120 arranged oppositely, and the first inner needle 110 and the second inner needle 120 may be used to clamp the electrode assembly 20;
  • the first inner needle 110 and the second inner needle 120 may constitute an inner needle assembly of the winding device 10
  • the first outer needle 130 and the second outer needle 140 may constitute an outer needle assembly of the winding device 10
  • the outer needle assembly may have an accommodating space for accommodating the inner needle assembly, so that the inner needle assembly may be disposed inside the outer needle assembly.
  • the inner needle assembly can be used to clamp the electrode assembly 20
  • the outer periphery of the outer needle assembly can be used to carry and wind the electrode assembly 20 .
  • a part of the electrode assembly 20 may be located inside the outer needle assembly and clamped by the inner needle assembly, and other parts of the electrode assembly 20 may protrude from the inside of the outer needle assembly and be wound around the outer circumference of the outer needle assembly.
  • the electrode assembly 20 can be removed from the winding device 10 shown in FIG. 1 .
  • the first inner needle 110 and the second inner needle 120 can be far away from each other, and the distance between the first inner needle 110 and the second inner needle 120 can be increased, so that the first inner needle 110 and the second inner needle 120 can loosen the electrode assembly 20; Contact with the electrode assembly 20 may be released.
  • the first outer needle 130 may include a first end face and a first outer surface, the first end face being the surface of the first outer needle 130 facing the second outer needle 140 , and the first outer surface being the surface of the first outer needle 130 facing away from the first outer needle 130 .
  • Protrusions may be formed at the junction of the first end surface and the first outer surface, as shown by the circled positions in FIG. 1 .
  • the first inner needle 110 and the first outer needle 130 are driven by the same driving member, so that the process of the first inner needle 110 moving away from the second inner needle 120 and the process of the first outer needle 130 approaching the second outer needle 140 can be performed simultaneously.
  • This may mean that when the first inner needle 110 and the second inner needle 120 do not fully release the electrode assembly 20 , the distance between the protrusion and the electrode assembly 20 is very close, and even the protrusion may contact the electrode assembly 20 .
  • the protruding corner may locally pull the electrode assembly 20 , increasing the possibility of the electrode assembly 20 being broken, thereby reducing the processing quality and performance of the electrode assembly 20 .
  • the embodiment of the present application provides a winding device and a winding device, which respectively drive the inner needle and the outer needle through different driving parts to realize independent control of the inner needle and the outer needle, so that the process of increasing the circumference of the inner needle and shrinking the circumference of the outer needle can be carried out independently.
  • FIG. 2 is a schematic structural diagram of a winding device 10 provided by an embodiment of the present application.
  • the winding device 10 shown in FIG. 2 can be applied to winding equipment.
  • Fig. 3 and Fig. 4 show the three-dimensional structural views of the first inner needle assembly 110 and the second inner needle assembly 120 provided by the embodiment of the present application.
  • This application mainly takes the first inner needle assembly 110 as an example to illustrate the embodiments of the inner needle assembly provided in the present application, and the embodiment of the second inner needle assembly 120 can refer to the embodiment of the first inner needle assembly 110 .
  • the winding device 10 may include a first inner needle 110 and a second inner needle 120 arranged oppositely, and the first inner needle 110 and the second inner needle 120 may be used to clamp the electrode assembly 20 shown in FIG.
  • the winding device 10 may include a first inner needle assembly 11 , a second inner needle assembly 12 , a first outer needle assembly, and a second outer needle assembly.
  • the first inner needle assembly 11 may include a first inner needle 110
  • the second inner needle assembly 12 may include a second inner needle 120
  • the first outer needle assembly may include a first outer needle 130
  • the second outer needle assembly may include a second outer needle 140 .
  • the first inner needle 110 may be located on a side of the first inner needle assembly 11 facing the second inner needle assembly 12
  • the second inner needle 120 may be located on a side of the second inner needle assembly 12 facing the first inner needle assembly 11 .
  • the first outer needle 130 may be located on a side of the first outer needle assembly facing away from the second outer needle assembly.
  • the second outer needle 140 may be located on a side of the second outer needle assembly facing away from the first outer needle assembly.
  • the first inner needle assembly 11 and the second inner needle assembly 12 may be located in a space between the first outer needle assembly (or first outer needle 130 ) and the second outer needle assembly (or second outer needle 140 ).
  • a side of the first outer needle assembly close to the second outer needle assembly may have a first accommodating space, and the first inner needle assembly 11 may be disposed in the first accommodating space.
  • a side of the second outer needle assembly close to the first outer needle assembly may have a second accommodating space, and the second inner needle assembly 12 may be disposed in the second accommodating space.
  • the first inner needle 110 of the first inner needle assembly 11 can move toward the second inner needle 120 of the second inner needle assembly 12 to reduce the distance between the first inner needle 110 and the second inner needle 120 .
  • the electrode can be clamped by the first inner needle 110 and the second inner needle 120 .
  • the first inner needle 110 can also move away from the second inner needle 120 to increase the distance between the first inner needle 110 and the second inner needle 120 .
  • the second inner needle 120 can move toward or away from the first inner needle 110 to adjust the distance between the first inner needle 110 and the second inner needle 120 .
  • the first inner needle assembly 11 and the first outer needle assembly can move relative to each other.
  • the first outer needle assembly may be moved towards or away from the first inner needle assembly 11 so that the outer peripheral profiles of the first outer needle 130 and the second outer needle 140 may be reduced or enlarged.
  • the second inner needle assembly 12 and the second outer needle assembly can move relatively.
  • the side of the second inner needle assembly 12 facing the second outer needle assembly may be fixed to the second outer needle assembly.
  • the outer surface of the first outer needle 130 away from the second outer needle 140 , and the outer surface of the second outer needle 140 away from the first outer needle 130 may be used to contact the electrode assembly 20 .
  • the electrode assembly 20 can extend out of the space between the first outer needle 130 and the second outer needle 140, and be attached to the outer surface of the first outer needle 130 away from the second outer needle 140, and the outer surface of the second outer needle 140 away from the first outer needle 130, so that the electrode assembly 20 can surround the outer circumference of the first outer needle 130 and the second outer needle 140.
  • the distance between the end surface of the first outer needle 130 close to the second outer needle 140 and the end surface of the first inner needle assembly 11 close to the second inner needle assembly 12 can be relatively small, for example, the end surface of the first outer needle 130 close to the second outer needle 140 can be flush with the end surface of the first inner needle assembly 11 close to the second inner needle assembly 12 needle assembly. This is beneficial to increase the contact area between the first outer needle 130 and the electrode assembly 20, thereby reducing the probability of the electrode assembly 20 being scratched or pierced by the first outer needle assembly. Similarly, the distance between the end surface of the second outer needle 140 close to the first outer needle 130 and the end surface of the second inner needle assembly 12 close to the first inner needle assembly 11 may be relatively small.
  • the shape of the outer surface of the first outer needle 130 away from the second outer needle 140 may match the winding structure of the electrode assembly 20 .
  • the cross-sectional curve of the outer surface of the first outer needle 130 away from the second outer needle 140 may be an elliptical arc (the elliptical arc may be a partial arc of the ellipse).
  • the outer surface of the first outer needle 130 away from the second outer needle 140 may be arc-shaped, so that the winding structure of the electrode assembly 20 may be a cylindrical structure.
  • the embodiment of the present application may not limit the specific winding structure of the electrode assembly 20 , nor the specific shape of the outer surface of the first outer needle 130 away from the second outer needle 140 .
  • the shape of the outer surface of the second outer needle 140 away from the first outer needle 130 may match the winding structure of the electrode assembly 20 .
  • Fig. 5 shows a plan view of the first inner needle assembly 11 provided by the embodiment of the present application.
  • the winding device 10 may also include a first slider 112 and a first pusher 111, the first pusher 111 is fixedly connected to the first inner needle 110, the first pusher 111 is provided with a first slide 113, the first slide 112 is movable in the first slide 113, the first slide 112 is configured to reciprocate along the first direction, the extending direction of the first slide 113 is inclined to the first direction, so that the first pusher 111 drives the first inner needle 110 to reciprocate along the second direction, To clamp or loosen the electrode assembly 20, the second direction is perpendicular to the first direction.
  • the winding device 10 also includes a second slide block 115 and a second push block 114, the second push block 114 is fixedly connected with the first outer needle 130, the second push block 114 is provided with a second chute 116, the second slide block 115 is movable in the second chute 116, the second slide block 115 is configured to reciprocate along the third direction, the extension direction of the second chute 116 is inclined to the third direction, so that the second push block 114 drives the first outer needle 130 to reciprocate along the fourth direction, so that The distance between the first outer needle 130 and the second outer needle 140 is enlarged or reduced, the third direction is parallel to the first direction, and the fourth direction is perpendicular to the third direction.
  • first inner needle 110, the second inner needle 120, the first outer needle 130 and the second outer needle 140 may be parallel to the X-axis direction.
  • the distance between the first inner needle 110 and the second inner needle 120 can be reduced.
  • the distance between the first inner needle 110 and the second inner needle 120 can be increased.
  • the embodiment of driving the first inner needle 110 will be described below as an example, and the embodiment of driving the second inner needle 120 can refer to the embodiment of the first inner needle 110 .
  • the included angle between the extension direction of the first sliding groove 113 and the X-axis direction may be ⁇ , where ⁇ 0.
  • the extending direction of the first slide slot 113 may have a first component parallel to the X axis and a second component parallel to the Y axis.
  • the first component may be in the same direction as the X+ direction
  • the second component may be in the same direction as the Y+ direction
  • the first component may be in the same direction as the X-direction
  • the second component may be in the same direction as the Y-direction.
  • the displacement component of the first sliding block 112 in the Y-axis direction can be zero or relatively small so as to be ignored. Since the extension direction of the first chute 113 has a component in the Y-axis direction, the first sliding block 112 can apply a thrust to the first chute 113, so that the first push block 111 provided with the first chute 113 can move in the Y-direction. Since the first push block 111 is connected with the first inner needle 110 , the first inner needle 110 can move toward the second inner needle 120 under the push of the first push block 111 .
  • the distance between the first outer needle 130 and the second outer needle 140 can be reduced.
  • the distance between the first outer needle 130 and the second outer needle 140 can be increased by driving the first outer needle 130 to move in the Y+ direction, and/or by moving the second outer needle 140 in the Y-direction.
  • the embodiment of driving the first outer needle 130 will be described below as an example, and the embodiment of driving the second outer needle 140 can refer to the embodiment of the first outer needle 130 .
  • the included angle between the extending direction of the second sliding groove 116 and the X-axis direction may be ⁇ , where ⁇ 0.
  • the extending direction of the second sliding groove 116 may have a third component parallel to the X axis, and a fourth component parallel to the Y axis.
  • the third component may be in the same direction as the X+ direction
  • the fourth component may be in the same direction as the Y-direction
  • the third component may be in the same direction as the X-direction
  • the fourth component may be in the same direction as the Y+ direction.
  • the displacement component of the second slider 115 in the Y-axis direction can be zero or relatively small so as to be ignored. Since the extension direction of the second sliding slot 116 has a component in the Y-axis direction, the second sliding block 115 can apply a thrust to the second sliding slot 116, so that the second pushing block 114 provided with the second sliding slot 116 can move in the Y+ direction. Since the second push block 114 is connected with the first outer needle 130 , the first outer needle 130 can move away from the second outer needle 140 under the push of the second push block 114 .
  • the driving of the first inner needle 110 can be realized through the first sliding block 112 and the first pushing block 111 provided with the first chute 113, and the driving of the first outer needle 130 can be realized through the second sliding block 115 and the second pushing block 114 provided with the second chute 116. Therefore, the first inner needle 110 and the first outer needle 130 can be driven independently, which is beneficial to flexibly adjust the winding process parameters, and also helps to reduce the scratching degree of the first outer needle 130 on the electrode assembly 20, thereby improving the processing quality of the electrode assembly 20.
  • the winding device 10 further includes: an inner needle support 131, the inner needle support 131 is used to accommodate the first inner needle 110, the first slider 112, the first push block 111, the second slider 115, and the second push block 114, wherein the inner needle support 131 has a first support cavity 132 and a second support cavity 133, and the first support cavity 132 is used to accommodate the first push block 111, the second support cavity 13
  • the opening of 3 faces the first outer needle 130
  • the second bracket cavity 133 is used for accommodating the second push block 114 .
  • the first push block 111 , the first slide block 112 , the second push block 114 , and the second slide block 115 all belong to the structure of the first inner needle assembly 11 .
  • the first inner needle assembly 11 may include an inner needle holder 131 for accommodating the first inner needle 110 , the first push block 111 , the first slider 112 , the second push block 114 , and the second slider 115 .
  • the first push block 111 can reciprocate in the first frame cavity 132 of the inner needle frame 131 along the second direction
  • the second push block 114 can reciprocate in the second frame cavity 133 of the inner needle frame 131 along the fourth direction.
  • first pushing block 111 and the first sliding block 112 can also be arranged on the first outer needle assembly shown in FIG. 2 .
  • second push block 114 and the second slide block 115 can also be arranged on the first outer needle assembly shown in FIG. 2 .
  • the winding device 10 further includes a cover plate 191 fastened to a side of the inner needle support 131 close to the first outer needle 130 .
  • the first push block 111 moves in the first bracket cavity 132
  • the second push block 114 moves in the second bracket cavity 133, so sliding friction can occur between the first push block 111 and the inner needle bracket 131, and between the second push block 114 and the inner needle bracket 131, thereby generating particles.
  • Particles may fall on the electrode assembly 20 , and the electrode assembly 20 may be pierced by the particles, thereby reducing the yield of the electrode assembly 20 .
  • FIG. 4 by fastening the cover plate 191 on the side of the inner needle holder 131 close to the first outer needle 130 , it is beneficial to reduce the possibility of particles in the inner needle holder 131 falling out of the inner needle holder 131 .
  • the winding device 10 further includes: a threaded fastener 141 through which the first inner needle 110 and the first push block 111 are fixedly connected.
  • FIG. 6 shows a cross-sectional view of section A-A in FIG. 5 .
  • the first push block 111 may include a cavity for accommodating the first inner needle 110 , and the first inner needle 110 may be fixed in the cavity so that the first inner needle 110 can follow the first push block 111 to move.
  • the first push block 111 may be provided with a mounting hole
  • the first inner needle 110 may be provided with a threaded hole
  • the mounting hole and the threaded hole may be oppositely arranged.
  • the hole axis of the installation hole and the hole axis of the threaded hole may be perpendicular to the extending direction of the first inner needle 110 .
  • the hole axis of the mounting hole and the hole axis of the threaded hole may be parallel to the Z-axis direction.
  • the threaded fastener 141 can pass through the mounting hole and be fixed in the threaded hole, so as to realize the fixed connection between the first push block 111 and the first inner needle 110 .
  • the hole axis of the mounting hole and the hole axis of the threaded hole can be arranged coaxially.
  • the mounting hole of the first push block 111 may be a stepped hole 1 .
  • the mounting hole may include a counterbore 1 with a larger inner diameter and a through hole 1 with a smaller inner diameter, and the through hole 1 is located on a side of the counterbore 1 close to the first inner needle 110 .
  • the first inner needle 110 can be provided with a stepped hole 2, the stepped hole 2 can include a counterbore 2 with a larger inner diameter and the above-mentioned threaded hole, the inner diameter of the threaded hole can be smaller than the inner diameter of the counterbore 2, and the inner diameter of the counterbore 2 can be the same as the inner diameter of the through hole 1, and the counterbore 2 can be located on the side of the threaded hole close to the first push block 111.
  • the winding device 10 may further include a bushing 142 , the outer diameter of the bushing 142 may match the inner diameter of the counterbore 2 and the through hole 1 , and the bushing 142 may be connected between the counterbore 2 and the through hole 1 .
  • the bushing 142 may also include a through hole 2, and the hole axis of the through hole 2 may be arranged parallel to the hole axis of the threaded hole.
  • the threaded fastener 141 can pass through the counterbore 1 of the first push block 111 and the through hole 2 of the bushing 142 , and be fixed on the threaded hole of the first inner needle 110 .
  • the number of threaded fasteners 141 may be multiple.
  • a plurality of threaded fasteners 141 may be disposed on both sides of the first push block 111 . That is to say, the two sides of the first push block 111 can be fixedly connected with the two sides of the first inner needle 110 through two threaded fasteners 141 respectively.
  • first push block 111 and the first inner needle 110 may also be fixedly connected by other means, such as gluing, welding, riveting, interference fit and the like.
  • the inner needle support 131 includes a locking opening 134 , the locking opening 134 is disposed opposite to the threaded fastener 141 , and the locking opening 134 is fastened with a cover plate 191 .
  • the inner needle holder 131 may include a locking opening 134, and the locking opening 134 is arranged opposite to the threaded fastener 141. Since the first push block 111 can be arranged in the inner needle holder 131 to slide relative to the inner needle holder 131 , particles generated by the sliding of the first push block 111 relative to the inner needle holder 131 may flow out through the locking opening 134 . As shown in FIG. 4 , by buckling the cover plate 191 on the locking opening 134 , it is beneficial to reduce the amount of particles passing through the locking opening 134 .
  • the second push block 114 and the first outer needle 130 can be fixedly connected by threaded fasteners, glue, welding, riveting, interference fit and the like.
  • the winding device 10 may further include a first adjusting rod 151, the first adjusting rod 151 may be arranged parallel to the first direction, the first adjusting rod 151 is fixedly connected to the first slider 112, the first adjusting rod 151 may be configured to reciprocate along the first direction to drive the first slider 112 to reciprocate along the first direction.
  • the winding device 10 may further include a second adjusting rod 152, which may be arranged parallel to the third direction, the second adjusting rod 152 is fixedly connected to the second slider 115, and the second adjusting rod 152 is configured to reciprocate along the third direction to drive the second slider 115 to reciprocate along the third direction.
  • a second adjusting rod 152 which may be arranged parallel to the third direction, the second adjusting rod 152 is fixedly connected to the second slider 115, and the second adjusting rod 152 is configured to reciprocate along the third direction to drive the second slider 115 to reciprocate along the third direction.
  • FIG. 7 shows a cross-sectional view of the B-B section in FIG. 5 .
  • FIG. 8 shows a cross-sectional view of section C-C in FIG. 5 .
  • FIG. 9 shows a cross-sectional view of the D-D section in FIG. 5 .
  • FIG. 10 shows a schematic structural view of the first inner needle assembly 11 viewed from the Y-direction shown in FIG. 5 .
  • FIG. 11 shows a cross-sectional view of the E-E section in FIG. 10 .
  • the E-E section may pass through the first adjusting rod 151 .
  • FIG. 12 shows a cross-sectional view of the F-F section in FIG. 10 .
  • the F-F section may pass through the second adjustment rod 152 .
  • first adjusting rod 151 and the second adjusting rod 152 can be arranged side by side.
  • the arrangement direction of the first adjusting rod 151 and the second adjusting rod 152 may be parallel to the Z-axis direction, for example.
  • the winding device 10 further includes a support portion 135 accommodated in the inner needle holder 131 , and the support portion 135 is provided with a moving groove 1351 for the first adjustment rod 151 and the second adjustment rod 152 .
  • the supporting part 135 may be a part of the inner needle holder 131 , for example.
  • the support portion 135 may be disposed in the inner cavity of the first push block 111 , that is, the first push block 111 may be used to carry the support portion 135 .
  • the side of the support portion 135 away from the first outer needle 130 may contact or be opposite to the side of the first inner needle 110 close to the first outer needle 130 .
  • the extending direction of the support part 135 may be parallel to the X-axis direction.
  • the first supporting portion 135 may have a through slot extending along the X-axis direction, and the first adjusting rod 151 and the second adjusting rod 152 pass through the through slot.
  • the inner diameter of the through slot in the Y-axis direction may match the outer diameters of the first adjusting rod 151 and the second adjusting rod 152 in the Y-axis direction.
  • the support part 135 may have a through hole 1 along the Z-axis direction at a position opposite to the first slider 112 , and the connecting piece between the first adjusting rod 151 and the first slider 112 may pass through the through hole 1 of the support part 135 .
  • the support part 135 may have a through hole 2 along the Z-axis direction at a position opposite to the second slider 115 , and the connecting piece between the second adjusting rod 152 and the second slider 115 may pass through the through hole 2 of the support part 135 .
  • the second push block 114 may be disposed on a side of the support portion 135 away from the first inner needle 110 . There may be a gap between the second push block 114 and the support portion 135 , which is beneficial to reduce the possibility of the second push block 114 colliding with the support portion 135 when reciprocating in the fourth direction.
  • the winding device or winding device 10 may include a first driving rod 230 and a second driving rod 240 .
  • the first drive rod 230 and the second drive rod 240 can be part of the drive of the winding device or winding device 10 .
  • at least one of the first drive rod 230 and the second drive rod 240 may belong to a component of the winding device 10 .
  • at least one of the first driving rod 230 and the second driving rod 240 may belong to a component of the winding device other than the winding device 10 .
  • the winding device 10 further includes: a first driving rod 230 for applying a driving force along the first direction to the first adjusting rod 151 ; a second driving rod 240 for applying a driving force along the third direction to the second adjusting rod 152 ; wherein the first driving rod 230 and the second driving rod 240 are located on both sides of the inner needle support 131 .
  • the first driving rod 230 can apply force to the first adjusting rod 151 outside the first inner needle assembly 11, so that the first adjusting rod 151 can move along the first direction.
  • the second driving rod 240 can apply force to the second adjusting rod 152 outside the first inner needle assembly 11, so that the second adjusting rod 152 can move along the third direction.
  • the first driving rod 230 and the second driving rod 240 can be located on two sides of the first inner needle assembly 11 respectively. In other possible embodiments, the first driving rod 230 and the second driving rod 240 may be located on the same side of the first inner needle assembly 11 . That is to say, the first driving rod 230 and the second driving rod 240 can respectively apply driving force to the first adjusting rod 151 and the second adjusting rod 152 on the same side of the first inner needle assembly 11 .
  • the first adjustment rod 151 when the first driving rod 230 pulls the first adjustment rod 151 in a direction away from the first inner needle assembly 11, the first adjustment rod 151 can move in the X+ direction (first direction). Since the first adjustment rod 151 is fixedly connected with the first slider 112, the first slider 112 can move in the X+ direction to push the first push block 111 to move in the Y-direction (second direction), thereby shrinking the first inner needle 110 and the second inner needle 120. The distance between them is to clamp the electrode assembly 20.
  • the first slider 112 can push the first push block 111 to move in the Y+ direction (opposite to the second direction), thereby increasing the distance between the first inner needle 110 and the second inner needle 120, so as to release the electrode assembly 20.
  • the extending direction of the first sliding slot 113 may be different from the extending direction of the first sliding slot 113 shown in FIG. 5 .
  • the extension direction of the first chute 113 may have a first component parallel to the X-axis and a second component parallel to the Y-axis, wherein the first component may be in the same direction as the X-direction, and the second component may be in the same direction as the Y+ direction, or the first component may be in the same direction as the X+ direction, and the second component may be in the same direction as the Y-direction.
  • the first adjustment rod 151 can move toward the X-direction (first direction), so that the first slider 112 can push the first push block 111 to move toward the Y-direction (second direction), thereby reducing the distance between the first inner needle 110 and the second inner needle 120, so as to clamp the electrode assembly 20.
  • the first adjusting rod 151 moves in the X+ direction (opposite to the first direction)
  • the first slider 112 can push the first push block 111 to move in the Y+ direction (opposite to the second direction), thereby increasing the distance between the first inner needle 110 and the second inner needle 120, so as to release the electrode assembly 20.
  • the driving direction of the first slider 112 that is, the specific orientation of the first direction can be arbitrary.
  • the second adjusting rod 152 when the second driving rod 240 pushes the second adjusting rod 152 toward the direction close to the first inner needle assembly 11, the second adjusting rod 152 can move toward the X+ direction (third direction). The distance between the outer needles 140 is to contact and carry the electrode assembly 20 .
  • the second slider 115 when the second adjusting rod 152 moves toward the X-direction (opposite to the third direction), the second slider 115 can push the second push block 114 to move toward the Y-direction (opposite to the fourth direction), thereby reducing the distance between the first outer needle 130 and the second outer needle 140, so as to break away from the contact with the electrode assembly 20.
  • the extending direction of the second sliding slot 116 may be different from the extending direction shown in FIG. 5 .
  • the extension direction of the second chute 116 may have a third component parallel to the X axis and a fourth component parallel to the Y axis, wherein the third component may be in the same direction as the X-direction, the fourth component may be in the same direction as the Y-direction, or the third component may be in the same direction as the X+ direction, and the fourth component may be in the same direction as the Y+ direction.
  • the second adjustment rod 152 can move toward the X-direction (third direction), so that the first slider 112 can push the second push block 114 to move toward the Y+ direction (fourth direction), thereby increasing the distance between the first outer needle 130 and the second outer needle 140 to contact and carry the electrode assembly 20.
  • the second slider 115 can push the second push block 114 to move toward the Y-direction (opposite to the fourth direction), thereby reducing the distance between the first outer needle 130 and the second outer needle 140 to break away from the contact with the electrode assembly 20.
  • the specific orientation of the driving direction of the second slider 115 that is, the third direction, can be arbitrary.
  • the outer needle and the inner needle can be controlled independently, so the first direction can be the same as or different from the third direction.
  • the first direction and the third direction are in the same direction, and along the first direction, the first chute 113 extends away from the second inner needle 120 , and the second chute 116 extends close to the second inner needle 120 .
  • the first push block 111 may have a plurality of first sliding grooves 113 , and the plurality of first sliding grooves 113 may be evenly distributed in the first inner needle assembly 11 .
  • the winding device 10 may further include a plurality of first sliding blocks 112 , which may correspond to a plurality of first sliding slots 113 one by one, and each first sliding block 112 may be movable in a corresponding first sliding slot 113 .
  • the extending directions of the plurality of first sliding grooves 113 may be parallel to each other.
  • the two first slide grooves 113 may be respectively located on two sides of the first inner needle assembly 11 along the X-axis direction. Referring to FIG. 2 , one of the two first slide grooves 113 can be located on the side of the first inner needle assembly 11 close to the first driving rod 230 , and the other can be located on the side of the first inner needle assembly 11 close to the second driving rod 240 .
  • the two first sliding grooves 113 may be respectively located on two sides of the first inner needle assembly 11 along the Z-axis direction.
  • the two first slide slots 113 may be arranged symmetrically with respect to the central axis of the first push block 111 .
  • the plurality of first chute 113 can be synchronously driven by the first adjusting rod 151, so that the plurality of first chute 113 can move along the first direction, and then the plurality of first chute 113 can drive the first push block 111 to move along the second direction. Therefore, the plurality of first sliding slots 113 and the plurality of first sliding slots 113 arranged symmetrically and uniformly can help reduce the possibility of excessive deflection of the first push block 111 and the first adjusting rod 151 during the movement.
  • the first adjusting rod 151 can pass through the first push block 111 , and the first adjusting rod 151 can be arranged opposite to the central area of the first push block 111 .
  • the second push block 114 may have a plurality of second sliding grooves 116 , and the plurality of second sliding grooves 116 may be uniformly distributed in the first inner needle assembly 11 .
  • the winding device 10 may further include a plurality of second sliding blocks 115 , which may correspond to the plurality of second sliding slots 116 one by one, and each second sliding block 115 may be movable in a corresponding second sliding slot 1162 .
  • the extending directions of the plurality of second slots 116 may be parallel to each other.
  • the two second sliders 115 can be respectively located on two sides of the first inner needle assembly 11 along the X-axis direction. Referring to FIG. 2 , one of the two second sliders 115 can be located on the side of the first inner needle assembly 11 close to the first driving rod 230 , and the other can be located on the side of the first inner needle assembly 11 close to the second driving rod 240 .
  • two second sliders 115 may be respectively located on two sides of the first inner needle assembly 11 along the Z-axis direction.
  • the two second slide slots 116 may be arranged symmetrically with respect to the central axis of the second push block 114 .
  • the plurality of second sliders 115 can be synchronously driven by the second adjustment rod 152, so that the plurality of second sliders 115 can move along the fourth direction, and then the plurality of second sliders 115 can drive the second push block 114 to move along the fourth direction. Therefore, the plurality of second sliding blocks 115 and the plurality of second sliding slots 116 arranged symmetrically and uniformly can help reduce the possibility of excessive deflection of the second push block 114 and the second adjusting rod 152 during the movement.
  • the second adjusting rod 152 can pass through the second push block 114 , and the second adjusting rod 152 can be disposed opposite to the central area of the second push block 114 .
  • the second adjusting rod 152 and the second slider 115 are fixedly connected through the first connecting shaft 117
  • the first adjusting rod 151 includes a first adjusting rod through hole 1511
  • the first connecting shaft 117 passes through the first adjusting rod through hole 1511, and can reciprocate in the first adjusting rod through hole 1511 along the third direction.
  • the winding device 10 can also include a first connecting shaft 117
  • the second adjusting rod 152 can also include a third adjusting rod through hole 1522
  • the first connecting shaft 117 can be fixed in the third adjusting rod through hole 1522, so as to realize the fixed connection between the first connecting shaft 117 and the second adjusting rod 152.
  • One side of the first connecting shaft 117 away from the second adjustment rod 152 can be fixed to the second slide block 115, so that the second adjustment rod 152 is fixedly connected with the second slide block 115. That is to say, the first connecting shaft 117 can be fixedly connected between the second adjusting rod 152 and the second sliding block 115 .
  • the inner diameter of the third adjusting rod through hole 1522 can match the outer diameter of the first connecting shaft 117 (that is, the inner diameter of the third adjusting rod through hole 1522 can be the same or approximately the same as the outer diameter of the first connecting shaft 117 ).
  • the first connecting shaft 117 can be interference fit with the through hole 1522 of the third adjusting rod, so that the first connecting shaft 117 can be fixed in the through hole 1522 of the third adjusting rod.
  • the first connecting shaft 117 may be fixed in the through hole 1522 of the third adjusting rod by means such as gluing or welding.
  • the second slider 115 may be located between the first slider 112 and the first driving rod 230 for driving the first slider 112 .
  • the first adjusting rod 151 can extend from the first sliding block 112 toward the first driving rod 230 , and pass through the first connecting shaft 117 fixedly connected with the second sliding block 115 .
  • the first adjustment rod 151 can be provided with a first adjustment rod through hole 1511 for the first connecting shaft 117 to move, so that the first connecting shaft 117 and the second sliding block 115 can reciprocate relative to the first adjusting rod 151 along the third direction, thereby facilitating the second sliding block 115 to break away from the linkage relationship with the first adjusting rod 151.
  • the inner diameter of the first adjusting rod through hole 1511 may be larger than the outer diameter of the first connecting shaft 117.
  • the through hole 1511 of the first adjusting rod can also constitute a moving track of the first connecting shaft 117 .
  • the first adjusting rod through hole 1511 can help limit the displacement component of the first connecting shaft 117 in the Y-axis direction, that is, the first adjusting rod through hole 1511 can help reduce the offset between the moving direction of the second slider 115 and the X-axis direction.
  • the size of the first adjusting rod through hole 1511 along the third direction is greater than or equal to the movement stroke of the second slider 115 along the third direction.
  • the third direction may be parallel to the X-axis direction.
  • the second slider 115 usually does not move endlessly toward the third direction or the opposite direction of the third direction, so the maximum moving distance of the second slider 115 in the third direction may be the moving distance of the second slider 115 along the third direction.
  • the size of the first adjustment rod through hole 1511 along the third direction is larger than the movement stroke of the second slider 115 along the third direction, which is beneficial to avoid the first adjustment rod through hole 1511 blocking the first connecting shaft 117 and the second slider 115 from reciprocating in the third direction.
  • the first adjusting rod 151 and the first slider 112 are fixedly connected through the second connecting shaft 118
  • the second adjusting rod 152 includes a second adjusting rod through hole 1521
  • the second connecting shaft 118 passes through the second adjusting rod through hole 1521, and can reciprocate in the second adjusting rod through hole 1521 along the first direction.
  • the winding device 10 can also include a second connecting shaft 118, the first adjusting rod 151 can also include a fourth adjusting rod through hole 1512, the second connecting shaft 118 can be fixed in the fourth adjusting rod through hole 1512, so as to realize the fixed connection between the second connecting shaft 118 and the first adjusting rod 151.
  • a side of the second connecting shaft 118 far away from the first adjusting rod 151 can be fixed to the first slider 112 to achieve a fixed connection between the first adjusting rod 151 and the first sliding block 112 . That is to say, the second connecting shaft 118 can be fixedly connected between the first adjusting rod 151 and the first sliding block 112 .
  • the inner diameter of the fourth adjusting rod through hole 1512 may match the outer diameter of the second connecting shaft 118 .
  • the second connecting shaft 118 can be fixed in the fourth adjusting rod through hole 1512 by means of interference fit, gluing, welding, etc. in the fourth adjusting rod through hole 1512 .
  • the first slider 112 may be located between the second slider 115 and the second driving rod 240 for driving the second slider 115 .
  • the second adjusting rod 152 can extend from the second sliding block 115 toward the second driving rod 240 and pass through the second connecting shaft 118 fixedly connected with the first sliding block 112 .
  • the second adjusting rod 152 can be provided with a second adjusting rod through hole 1521 for the second connecting shaft 118 to move, so that the second connecting shaft 118 and the first sliding block 112 can reciprocate relative to the second adjusting rod 152 along the first direction, thereby facilitating the first sliding block 112 to break away from the linkage relationship with the second adjusting rod 152.
  • the inner diameter of the second adjusting rod through hole 1521 may be larger than the outer diameter of the second connecting shaft 118.
  • the second adjusting rod through hole 1521 can also constitute a moving track of the second connecting shaft 118 .
  • the second adjusting rod through hole 1521 can help limit the displacement component of the second connecting shaft 118 in the Y-axis direction, that is, the second adjusting rod through hole 1521 can help reduce the offset between the moving direction of the first slider 112 and the X-axis direction.
  • the size of the second adjusting rod through hole 1521 along the first direction is greater than or equal to the movement stroke of the first slider 112 along the first direction.
  • the first slider 112 usually does not move endlessly toward the first direction or the opposite direction of the first direction, so the maximum moving distance of the first slider 112 in the first direction may be the moving distance of the first slider 112 along the first direction.
  • the size of the second adjustment rod through hole 1521 along the first direction is larger than the movement stroke of the first slider 112 along the first direction, which is beneficial to prevent the second adjustment rod through hole 1521 from blocking the second connecting shaft 118 and the first slider 112 from reciprocating movement in the first direction.
  • one end of the second adjustment rod 152 is provided with an adjustment rod protrusion 1523 , and the adjustment rod protrusion 1523 protrudes toward the first adjustment rod 151 along a direction perpendicular to the first direction.
  • the first adjustment rod 151 and the second adjustment rod 152 can correspond to the central area of the inner needle support 131, wherein the first adjustment rod 151 can be located on one side of the center line of the inner needle support 131, and the inner needle support 131 can be located on the other side of the center line of the first push block 111.
  • the distance between the second adjusting rod 152 and the second driving rod 240 may be smaller than the distance between the first adjusting rod 151 and the second driving rod 240, that is, the second orthographic projection of the second adjusting rod 152 along the Z-axis direction may protrude in the X-direction from the first orthographic projection of the first adjusting rod 151 along the Z-axis direction.
  • the adjustment rod protrusion 1523 is provided on the part of the second adjustment rod 152 other than the first orthographic projection, and the adjustment rod protrusion 1523 can protrude toward the first adjustment rod 151, so that the part of the second adjustment rod 152 other than the first orthographic projection can correspond to the central area of the first push block 111, which is beneficial to reduce the possibility of the second adjustment rod 152 shifting relative to the X-axis direction during the movement.
  • the winding device 10 further includes: a first elastic element 161, the first elastic element 161 is used to apply a driving force to the first adjusting rod 151 along the direction opposite to the first direction.
  • the first driving rod 230 can apply a driving force along the first direction to the first regulating rod 151, so that the first regulating rod 151 can move along the first direction, assuming that it moves from the A position to the A' position.
  • the first elastic member 161 can be gradually extended or compressed.
  • the first driving rod 230 can be driven by the first elastic member 161. Return to the original position, that is, return to the A position from the A' position, so as to facilitate the next batch of winding process.
  • the winding device 10 further includes: a needle holder cavity 211 , the needle holder cavity 211 has a needle holder cavity 211 opening toward the inner needle support 131 , the first adjusting rod 151 extends into the needle holder cavity 211 , and the first elastic element 161 abuts against the bottom wall of the needle holder cavity 211 .
  • FIG. 13 shows a schematic structural view of a needle reel cavity 211 provided in an embodiment of the present application.
  • the winding device 10 may include a needle holder cavity 211 , and the needle holder cavity 211 may be located between the first driving rod 230 and the first inner needle assembly 11 .
  • the first adjusting rod 151 can protrude from the first inner needle assembly 11 and extend into the cavity 211 of the needle reel holder.
  • One end of the first elastic element 161 can abut against the bottom wall of the needle holder cavity 211 , and the other end of the first elastic element 161 can be used to apply force to the first adjusting rod 151 .
  • the first elastic member 161 when the first adjusting rod 151 moves away from the needle holder cavity 211 , the first elastic member 161 can be in a stretched state, so that the first elastic member 161 can be used to pull the first adjusting rod 151 to move toward the direction closer to the needle holder cavity 211 . In another embodiment, when the first adjusting rod 151 moves toward the needle holder cavity 211 , the first elastic member 161 can be in a compressed state, and the first elastic member 161 can be used to push the first adjusting rod 151 to move away from the needle holder cavity 211 .
  • the bottom wall of the needle holder cavity 211 is provided with a needle holder through hole 212, and the first driving rod 230 passes through the needle holder through hole 212 and extends into the needle holder cavity 211;
  • the winding device 10 further includes a driving slider 213, the driving slider 213 is accommodated in the needle holder cavity 211, and the driving slider 213 is fixedly connected with the first adjusting rod 151, and is opposite to the first driving rod in the first direction 230 is fixed, and the first elastic element 161 abuts between the driving slider 213 and the needle holder cavity 211 .
  • the first driving rod 230 can pass through the needle holder through hole 212 and extend into the needle holder cavity 211 from a side of the needle holder cavity 211 away from the first inner needle assembly 11 .
  • One end of the first driving rod 230 close to the first inner needle assembly 11 can be connected with the driving slider 213 in the cavity 211 of the needle reel holder, so as to be fixed relative to the first driving rod 230 in the first direction. Therefore, the driving slider 213 can move along the first direction driven by the first driving rod 230 .
  • One end of the first elastic element 161 is fixedly connected to the bottom wall of the needle holder cavity 211 , and the other end of the first elastic element 161 is fixedly connected to the driving slider 213 . Therefore, the driving slider 213 can move in the direction opposite to the first direction driven by the first elastic member 161 .
  • the driving slider 213 can drive the first adjusting rod 151 to reciprocate in the first direction. That is to say, the first driving rod 230 can drive the first adjusting rod 151 to move along the first direction through the driving slider 213 , and the first elastic element 161 can drive the first adjusting rod 151 to move along the opposite direction to the first direction through the driving slider 213 .
  • the driving slider 213 can have a built-in pin 215 , and the pin 215 can be inserted into the hole of the first driving rod 230 to play a role of limiting and fixing, so that the first driving rod 230 is fixed relative to the first driving rod 230 in the first direction.
  • the number of pins 215 may be multiple, and the multiple pins 215 may be arranged along the first direction.
  • the driving slider 213 can have a built-in rolling bearing 214 , the outer circumference of the rolling bearing 214 can be fixed to the driving slider 213 , and the inner circumference of the rolling bearing 214 can be fixedly connected with the first driving rod 230 .
  • the outer circumference of the rolling bearing 214 and the inner circumference of the rolling bearing 214 are relatively fixed in the first direction.
  • the outer circumference of the rolling bearing 214 is rotatable relative to the inner circumference of the rolling bearing 214.
  • the needle holder cavity 211 may rotate relative to the first drive rod 230, while the first drive rod 230 may not substantially rotate.
  • the rolling bearing 214 it is beneficial to reduce the amount of rotational friction between the first driving rod 230 and the driving slider 213 .
  • a guide rail 216 for driving the slider 213 may also be provided on the bottom wall of the needle holder cavity 211 , and the first elastic member 161 may be sleeved on the outer periphery of the guide rail 216 , thereby reducing the displacement of the driving slider 213 from the first direction.
  • the winding device 10 further includes a connection seat 220, the connection seat 220 is located between the needle reel seat cavity 211 and the inner needle support 131 and covers the opening of the needle reel seat cavity 211, the connection seat 220 includes a connection seat through hole 221, and the first adjustment rod 151 passes through the connection seat through hole 221.
  • the winding device 10 may include a connection seat 220 , and the connection seat 220 may be connected between the needle reel seat cavity 211 and the first inner needle assembly 11 .
  • the connection base 220 may include a connection cover and a connection protrusion, and the connection protrusion may protrude from the connection cover toward the first inner needle assembly 11 .
  • the connecting cover can cover the opening of the cavity 211 of the needle hub.
  • a connection seat through hole 221 may be provided on the connection cover.
  • the first adjusting rod 151 can protrude from the first inner needle assembly 11 , pass through the connection seat through hole 221 , and extend into the needle reel holder cavity 211 to be fixedly connected with the driving slider 213 in the needle reel holder cavity 211 .
  • FIG. 14 shows a schematic structural view of a connection seat 220 provided by the present application.
  • a cover plate 193 may be disposed on the connection base 220 .
  • the cover plate 193 can be used to prevent particles in the connecting seat 220 and the first inner needle assembly 11 from flowing out from the connecting seat 220 .
  • the winding device 10 further includes: a second elastic element 162, the second elastic element 162 is used to apply a driving force to the second adjusting rod 152 in a direction opposite to the third direction.
  • the second driving rod 240 can apply a driving force along the third direction to the second regulating rod 152, so that the second regulating rod 152 can move along the third direction, assuming that it moves from the B position to the B' position.
  • the second elastic member 162 can be gradually stretched or gradually compressed.
  • the second driving rod 240 can be driven by the second elastic member 162. Return to the initial position, that is, return from the B' position to the B position, so as to facilitate the next batch of winding processes.
  • one end of the second elastic element 162 is fixed to the inner needle support 131 , and the other end of the second elastic element 162 abuts against the second adjustment rod 152 .
  • FIG. 11 and 12 show schematic structural diagrams of the second elastic member 162 inside the first inner needle assembly 11 .
  • the second adjusting rod 152 can move along the third direction driven by the second driving rod 240 .
  • One end of the second elastic element 162 is fixedly connected to the inner needle support 131 , and the other end of the second elastic element 162 is fixedly connected to the second adjustment rod 152 . Therefore, the second adjusting rod 152 can move in the direction opposite to the third direction driven by the second elastic member 162 .
  • the side of the second elastic element 162 close to the cavity 211 of the needle holder is fixed with an elastic element base.
  • the side of the second elastic element 162 away from the second adjustment rod 152 can be fixed on the elastic element base, so as to realize the fixed connection between the second elastic element 162 and the inner needle support 131 .
  • the support portion 135 includes a support portion opening 1352
  • the winding device 10 further includes a third push block 119
  • the third push block 119 passes through the support portion opening 1352, and is fixedly connected with the second adjustment rod 152
  • the third push block 119 is used to apply a driving force along the third direction to the second adjustment rod 152
  • the inner diameter of the support portion opening 1352 in the third direction is greater than or equal to the stroke of the second adjustment rod 152 in the third direction.
  • the third push block 119 may include a third push block main body and a third push block protrusion, and the third push block protrusion may extend from the third push block main body to a direction away from the second adjustment rod 152 .
  • the extension direction of the third push block protrusion may be parallel to the extension direction of the second adjustment rod 152 .
  • An end of the third push block protrusion away from the second adjusting rod 152 or the third push block main body may be used to contact the second driving rod 240 .
  • the main body of the third push block can pass through the opening 1352 of the support part and be fixedly connected with the second adjusting rod 152 .
  • the third push block main body can be fixed on the second adjusting rod 152 by threaded fasteners, for example.
  • the third pushing block 119 is driven by the second driving rod 240 to move in the third direction
  • the second adjusting rod 152 can correspondingly move in the third direction.
  • the support portion opening 1352 may be disposed on one side of the second adjustment rod 152 along the Y-axis direction, that is, the support portion opening 1352 may be aligned with the second adjustment rod 152 along the Y-axis direction.
  • the inner diameter of the support portion opening 1352 in the X-axis direction is greater than or equal to the stroke of the second adjusting rod 152 in the third direction, so that the third push block 119 can reciprocate in the support portion opening 1352 along the third direction.
  • the third push block 119 can move to the edge of the support portion opening 1352 farthest from the needle holder cavity 211 , so the support portion opening 1352 can at least be used to limit the farthest stop position of the third push block 119 along the X-direction.
  • the opening 1352 of the support portion can also be used to limit the farthest stop position of the third push block 119 along the X+ direction. That is to say, the opening 1352 of the supporting part can be used to limit the maximum stroke of the third push block 119 in the third direction.
  • the inner needle holder 131 may be provided with a holder protrusion, and the holder protrusion may protrude from the main body of the inner needle holder 131 toward the support opening 1352, and the projection of the support opening 1352 in the Y-axis direction may be located in the support opening 1352. That is to say, after the third push block 119 moves to the protruding portion of the bracket, there may be a gap between the third push block 119 and the edge of the opening 1352 of the support portion.
  • the bracket protrusion can be used to limit the farthest stop position of the third push block 119 in the X+ direction.
  • the support part 135 includes a support part accommodating cavity
  • the winding device 10 further includes a fourth push block
  • the fourth push block passes through the support part accommodating cavity, and is fixedly connected with the second adjustment rod 152
  • the fourth push block is used to apply a driving force in the opposite direction of the third direction to the second adjustment rod 152
  • the inner diameter of the support part accommodating cavity in the third direction is greater than or equal to the stroke of the second adjustment rod 152 in the third direction.
  • the fourth push block can be partly accommodated in the supporting portion accommodating cavity, and the rest can extend out of the supporting portion accommodating cavity, and be fixedly connected with the second adjusting rod 152 .
  • the second regulating rod 152 can correspondingly move in the direction opposite to the third direction.
  • the fourth push block can be driven by the second elastic connecting member to move in the direction opposite to the third direction.
  • the fourth push block can be located between the second adjusting rod 152 and the second elastic element 162 .
  • the inner diameter of the supporting portion accommodating cavity in the Y-axis direction may match the maximum outer diameter of the fourth push block in the Y-axis direction.
  • the supporting portion accommodating cavity may have an opening on a side close to the second adjusting rod 152, and the inner diameter of the opening in the Y-axis direction may be smaller than the maximum outer diameter of the fourth push block in the Y-axis direction, so that the fourth pushing block cannot completely move out of the supporting portion accommodating cavity.
  • the inner diameter of the supporting portion accommodating cavity in the X-axis direction may correspond to the distance between the fourth push block and the base of the elastic element, that is, the supporting portion accommodating cavity may be used to limit the maximum stroke of the fourth pushing block or the second elastic element 162 away from the side of the needle holder cavity 211.
  • the inner diameter of the supporting part receiving cavity in the third direction may be greater than or equal to the stroke of the second adjusting rod 152 in the third direction.
  • the second elastic element 162 can surround the outer periphery of the first adjusting rod 151 . Since the first adjusting rod 151 and the second adjusting rod 152 move independently. In order to avoid driving the first adjustment rod 151 when the second elastic member 162 moves, the fourth push block can have a push block through hole, and the first adjustment rod 151 can pass through the push block through hole, and can reciprocate along the first direction in the push block through hole. In some embodiments, the inner diameter of the through hole of the push block in the Y-axis direction is greater than or equal to the outer diameter of the first adjusting rod 151 in the Y-axis direction.
  • the first bracket cavity 132 of the inner needle bracket 131 can be used for accommodating the first push block 111 .
  • the inner needle bracket 131 further includes a third sliding slot 136 connected with the first bracket cavity 132, the main body 1111 of the first pushing block 111 is accommodated in the first bracket cavity 132, the first pushing block 111 further includes a first pushing block protrusion 1112, and the first pushing block protrusion 1112 can slide along the second direction in the third sliding slot 136, the distance between the first pushing block protrusion 1112 and the third sliding slot 136
  • the sliding gap is smaller than the sliding gap between the main body 1111 of the first push block 111 and the first bracket cavity 132 .
  • the third sliding slot 136 may be located at one side of the first bracket cavity 132 .
  • the third slide slot 136 extends along the second direction.
  • the third chute 136 is arranged parallel to the Y-axis direction, and can be aligned with the first bracket cavity 132 along the X-axis direction.
  • the third chute 136 can communicate with the first bracket cavity 132 to form a connected cavity.
  • the first pushing block protrusion 1112 of the first pushing block 111 can protrude from the main body 1111 of the first pushing block 111 and extend into the third sliding groove 136 .
  • the inner diameter of the third sliding slot 136 in the Z-axis direction may be smaller than the inner diameter of the first bracket cavity 132 in the Z-axis direction.
  • the third chute 136 can serve as a guide rail of the first push block 111 , for example, and the push-out portion of the first push block 111 can serve as a guide rail fitting of the first push block 111 , for example.
  • the sliding gap between the first pushing block protrusion 1112 and the third sliding slot 136 may refer to an average distance between the first pushing block protrusion 1112 and the third sliding slot 136 .
  • the sliding gap between the main body 1111 of the first push block 111 and the first bracket cavity 132 may refer to an average distance between the main body 1111 of the first push block 111 and the first bracket cavity 132 .
  • the sliding gap between the first push block protrusion 1112 and the third chute 136 is smaller than the sliding gap between the main body 1111 of the first push block 111 and the first bracket cavity 132, the degree of sliding friction between the main body 1111 of the first push block 111 and the first bracket cavity 132 can be smaller than that between the first push block protrusion 1112 and the third chute 136. Therefore, the main friction area of the first push block 111 can be concentrated on the first push block protrusion 1112 , which is beneficial to reduce the amount of friction that the main body 1111 of the first push block 111 participates in.
  • the contact area between the first pushing block protrusion 1112 and the third sliding slot 136 is relatively small, so the overall friction between the first pushing block protrusion 1112 and the third sliding slot 136 is relatively small.
  • the winding device 10 further includes a cover plate 191 fastened to an end of the first bracket cavity 132 and/or the third chute 136 close to the first outer needle 130 .
  • the cover plate 191 buckled on the first bracket cavity 132 also covers the third slide groove 136 .
  • the winding device 10 may only be provided with the cover plate 191 for fastening the third chute 136 .
  • the winding device 10 can be independently provided with a cover plate 191 for fastening the first bracket cavity 132 and a cover plate 191 for fastening the third sliding groove 136 .
  • the first push block 111 moves in the first bracket cavity 132 and the third chute 136, so sliding friction can occur between the first push block 111 and the first bracket cavity 132, and sliding friction can occur between the first push block 111 and the third chute 136, thereby generating particles. Particles may fall on the electrode assembly 20 , and the electrode assembly 20 may be pierced by the particles, thereby reducing the yield of the electrode assembly 20 .
  • the second bracket cavity 133 of the inner needle bracket 131 can be used for accommodating the second push block 114 .
  • the inner needle bracket 131 further includes a fourth sliding groove 137 connected with the second bracket cavity 133, the main body 1141 of the second pushing block 114 is accommodated in the second bracket cavity 133, the second pushing block 114 further includes a second pushing block protrusion 1142, and the second pushing block protrusion 1142 can slide in the fourth sliding groove 137 along the fourth direction.
  • the sliding gap is smaller than the sliding gap between the main body 1141 of the second push block 114 and the second bracket cavity 133 .
  • the fourth sliding slot 137 may be located at one side of the second bracket cavity 133 .
  • the fourth slide slot 137 extends along a fourth direction.
  • the fourth chute 137 is arranged parallel to the Y-axis direction, and can be aligned with the second bracket cavity 133 along the X-axis direction.
  • the fourth chute 137 can communicate with the second bracket cavity 133 to form a connected cavity.
  • the second pushing block protrusion 1142 of the second pushing block 114 can protrude from the main body 1141 of the second pushing block 114 and extend into the fourth sliding groove 137 .
  • the inner diameter of the fourth sliding slot 137 in the Z-axis direction may be smaller than the inner diameter of the second bracket cavity 133 in the Z-axis direction.
  • the fourth sliding slot 137 can serve as a guide rail of the second push block 114 , for example, and the pushing portion of the second push block 114 can serve as a guide rail matching part of the second push block 114 .
  • the sliding gap between the second pushing block protrusion 1142 and the fourth sliding slot 137 may refer to an average distance between the second pushing block protrusion 1142 and the fourth sliding slot 137 .
  • the sliding gap between the main body 1141 of the second push block 114 and the second bracket cavity 133 may refer to an average distance between the main body 1141 of the second push block 114 and the second bracket cavity 133 .
  • the sliding gap between the second push block protrusion 1142 and the fourth chute 137 is smaller than the sliding gap between the main body 1141 of the second push block 114 and the second bracket cavity 133 , the degree of sliding friction between the main body 1141 of the second push block 114 and the second bracket cavity 133 can be smaller than that between the second push block protrusion 1142 and the fourth chute 137 . Therefore, the main friction area of the second push block 114 can be concentrated on the second push block protrusion 1142 , which is beneficial to reduce the amount of friction that the main body 1141 of the second push block 114 participates in.
  • the contact area between the second pushing block protrusion 1142 and the fourth sliding slot 137 is relatively small, so the overall friction between the second pushing block protrusion 1142 and the fourth sliding slot 137 is relatively small.
  • the winding device 10 further includes a cover plate 191 fastened to an end of the fourth chute 137 close to the first outer needle 130 .
  • the second push block protrusion 1142 moves in the fourth chute 137, so sliding friction can occur between the second push block protrusion 1142 and the fourth chute 137, thereby generating particles. Particles may fall on the electrode assembly 20 , and the electrode assembly 20 may be pierced by the particles, thereby reducing the yield of the electrode assembly 20 .
  • the opening of the first chute 113 away from the first slider 112 is buckled with a cover plate 191; and/or, the opening of the second chute 116 away from the second slider 115 is buckled with a cover 191; and/or, the inner needle support 131 includes a first chute opening 138, which is arranged opposite to the first chute 113 on the first push block 111, and a cover is buckled on the opening of the first slider 112 plate 191; and/or, the inner needle support 131 includes a second chute opening 139, the second chute opening 139 is arranged opposite to the second chute 116 on the second push block 114, and a cover plate 191 is buckled on the opening of the second slider 115.
  • particles generated in the first push block 111 may flow out through the first chute 113 .
  • the cover plate 191 is fastened to the opening of the first chute 113 away from the first slider 112 , which is beneficial to reduce the amount of particles passing through the first chute 113 .
  • particles generated in the second push block 114 may flow out through the second chute 116 .
  • By fastening the cover plate 191 on the opening of the second chute 116 away from the second slider 115 it is beneficial to reduce the amount of particles passing through the second chute 116 .
  • the inner needle holder 131 includes a first chute opening 138, and the first chute opening 138 is opposite to the first chute 113 on the first push block 111. Since the first push block 111 can be arranged in the inner needle support 131 , the first push block 111 can slide relative to the inner needle support 131 , and the generated particles may flow out through the first chute opening 138 . By buckling the cover plate 191 on the first chute opening 138 , it is beneficial to reduce the amount of particles passing through the first chute opening 138 .
  • the second push block 114 can be arranged in the inner needle support 131 , the second push block 114 can slide relative to the inner needle support 131 , and the generated particles may flow out through the second chute opening 139 .
  • By buckling the cover plate 191 on the second chute opening 139 it is beneficial to reduce the amount of particles passing through the second chute opening 139 .
  • the winding device 10 further includes: a magnetic attraction component 194 , the magnetic attraction component 194 is disposed on the inner needle support 131 , and the magnetic attraction component 194 is used to absorb particles in the inner needle support 131 .
  • the inner needle support 131 is equipped with a magnetic component 194 so that the magnetic component 194 can absorb the particles around the possible path of the particles, thereby reducing the possibility of the particles falling on the electrode assembly 20 .
  • the magnetic attraction part 194 is arranged at least one of the following positions: the side of the first inner needle 110 facing the first push block 111; the side of the first push block 111 facing the first inner needle 110; the side of the second push block 114 facing the inner needle support 131; the side of the inner needle support 131 facing the second push block 114; The position close to the second sliding groove 116; the side of the inner needle support 131 close to the first inner needle 110; the side of the first inner needle 110 close to the inner needle support 131.
  • Fig. 15 is a schematic structural diagram of a first inner needle 110 provided by the present application.
  • particles in the inner needle holder 131 may flow out of the inner needle holder 131 through the gap between the first push block 111 and the first inner needle 110 .
  • the magnetic attraction part 194 on the side of the first inner needle 110 facing the first push block 111, and/or, on the side of the first push block 111 facing the first inner needle 110, it is beneficial to reduce the amount of particles flowing out of the inner needle holder 131 through the gap between the first push block 111 and the first inner needle 110.
  • Fig. 16 and Fig. 17 are schematic structural diagrams of an inner needle holder 135 provided by the present application.
  • the particles in the inner needle support 131 may flow out of the inner needle support 131 through the gap between the second push block 114 and the inner needle support 131.
  • the particles in the first push block 111 may flow out of the first push block 111 through the first chute 113 .
  • the magnetic component 194 By arranging the magnetic component 194 on the side of the inner needle holder 131 close to the first chute 113 , it is beneficial to reduce the amount of particles flowing out of the inner needle holder 131 through the gap between the first push block 111 and the inner needle holder 131 .
  • the particles in the second push block 114 may flow out of the second push block 114 through the second chute 116 .
  • the magnetic attraction part 194 on the side of the inner needle support 131 close to the second sliding groove 116 , it is beneficial to reduce the amount of particles from the second push block 114 flowing out of the inner needle support 131 .
  • the particles in the inner needle holder 131 may flow out of the inner needle holder 131 through the gap between the inner needle holder 131 and the first inner needle 110 .
  • the magnetic attraction part 194 on the side of the first inner needle 110 close to the inner needle support 131, and/or, the side of the inner needle support 131 close to the first inner needle 110 it is beneficial to reduce the amount of particles flowing out of the inner needle support 131 through the gap between the inner needle support 131 and the first inner needle 110.
  • a magnetic cover 195 can be snapped onto the magnetic component 194 .
  • a magnetic attraction component 194 may be provided on the side of the first inner needle 110 facing the first push block 111 , and a magnetic attraction cover 195 may be provided on the side of the magnetic attraction component 194 away from the first inner needle 110 .
  • a magnetic attraction component 194 may be provided on the side of the inner needle support 131 facing the second push block 114 , and a magnetic attraction cover 195 may be provided on the side of the magnetic attraction component 194 away from the inner needle support 131 .
  • a magnetic attraction component 194 can be provided on the side of the inner needle support 131 close to the second slide groove 116 , and a magnetic attraction cover 195 can be provided on the side of the magnetic attraction component 194 away from the inner needle support 131 .
  • a magnetic attraction part 194 can be provided on the side of the inner needle support 131 close to the first inner needle 110 , and a magnetic attraction cover 195 can be provided on the side of the magnetic attraction part 194 away from the inner needle support 131 .
  • FIG. 18 shows a schematic diagram of a method for adjusting tab misalignment provided by an embodiment of the present application.
  • the winding angle of the specified tab is detected, and compared with the standard angle, the amount of tab misalignment is calculated in real time, so that the amount of tab misalignment and the direction of tab misalignment of multi-tab cells can be automatically detected online in real time.
  • the dislocation of the nth tab from the inside to the outside is X n
  • the winding angle of the nth tab is ⁇ n
  • the standard winding angle of the nth tab is ⁇ n '
  • the circumference of the winding needle is C
  • the thickness of the wound cell layer is T
  • the embodiments of the present application provide a winding device and a winding device, which have the feature of independently adjusting the circumference of the inner needle and the circumference of the outer needle.
  • the winding device and winding equipment can be applied to the winding production scene of the electrode assembly.
  • by arranging the cover plate, the magnetic component and the magnetic cover plate it is beneficial to reduce particles in the winding device from falling on the electrode assembly and improve the production quality of the electrode assembly.

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Abstract

本申请实施例提供一种卷绕装置和卷绕设备。卷绕装置的内针用于夹紧电极组件；卷绕装置的外针用于卷绕电极组件。卷绕装置还包括第一滑块和第一推块，第一滑块在第一推块上的第一滑槽内可沿第一方向往复移动，第一滑槽的延伸方向倾斜于第一方向，以使第一推块带动第一内针沿第二方向往复移动，第二方向垂直于第一方向；第二滑块和第二推块，第二滑块在第二推块上的第二滑槽内可沿第三方向往复移动，第二滑槽的延伸方向倾斜于第三方向，以使第二推块带动第二内针沿第四方向往复移动，第四方向垂直于第三方向，第三方向平行于第一方向。本申请提供的卷绕装置和卷绕设备有利于提升卷绕式结构的电极组件的成品率或使用性能。

Description

卷绕装置和卷绕设备 技术领域
本申请涉及电池技术领域，特别是涉及一种卷绕装置和卷绕设备。
背景技术
卷绕装置可以对电极组件进行卷绕，以使电极组件呈卷绕式结构。卷绕装置可以包括内针和外针，其中内针可用于在卷绕过程中夹紧电极组件，外针可以用于承接电极组件的其余部分，以使电极组件可以卷绕于外针的外周。在卷绕结束后，内针可以松开电极组件，外针可以收缩以缩小外针的外径，以便于电极组件脱离卷绕装置。
内针和外针之间的配合运动可能会引发一系列工艺问题，进而可能会降低卷绕式结构的电极组件的成品率或使用性能。
发明内容
本申请提供一种卷绕装置和卷绕设备，目的是提升卷绕式结构的电极组件的成品率或使用性能。
第一方面，提供了一种卷绕装置，包括：相对设置的第一内针和第二内针，用于夹紧电极组件；相对设置的第一外针和第二外针，所述第一外针和所述第二外针的外周用于卷绕所述电极组件；所述卷绕装置还包括第一滑块和第一推块，所述第一推块与所述第一内针固定连接，所述第一推块上设置有第一滑槽，所述第一滑块在所述第一滑槽内可移动，所述第一滑块被配置沿第一方向往复移动，所述第一滑槽的延伸方向倾斜于所述第一方向，以使所述第一推块带动所述第一内针沿第二方向往复移动，以夹紧或松开所述电极组件，所述第二方向垂直于所述第一方向；所述卷绕装置还包括第二滑块和第二推块，所述第二推块与所述第一外针固定连接，所述第二推块上设置有第二滑槽，所述第二滑块在所述第二滑槽内可移动，所述第二滑块被配置沿第三方向往复移动，所述第二滑槽的延伸方向倾斜于所述第三方向，以使所述第二推块带动所述第一外针沿第四方向往复移动，以扩大或缩小所述第一外针和所述第二外针之间的间距，所述第三方向平行于所述第一方向，所述第四方向垂直于所述第三方向。
本申请提供的方案，通过第一滑块和第一推块的第一滑槽的配合，以及第二滑块和第二推块的第二滑槽的配合，使得第一内针和第一外针可以独立控制。通过本申请提供的卷绕装置和卷绕设备，在取下电极组件时，内针可以先松开电极组件，之后外针缩小外周长，有利于降低电极组件被外针的凸角拉扯的可能性，进而有利于提高电极组件的加工质量和使用性能。
在一种可能的实现方式中，所述卷绕装置还包括：第一调节杆，相对于所述第一方向平行设置，所述第一调节杆与所述第一滑块固定连接，所述第一调节杆被配置 沿所述第一方向往复移动以带动所述第一滑块沿所述第一方向往复移动；第二调节杆，相对于所述第三方向平行设置，所述第二调节杆与所述第二滑块固定连接，所述第二调节杆被配置沿所述第三方向往复移动以带动所述第二滑块沿所述第三方向往复移动。
在本申请中，通过设置第一调节杆和第二调节杆，因此可以在距离第一滑块和第二滑块较远的位置对第一滑块和第二滑块独立驱动，有利于提高驱动第一滑块和第二滑块的灵活性。
在一种可能的实现方式中，所述第二调节杆和所述第二滑块通过第一连接轴固定连接，所述第一调节杆包括第一调节杆通孔，所述第一连接轴贯穿所述第一调节杆通孔，并在所述第一调节杆通孔内可沿所述第三方向往复移动。
在本申请中，为使第一滑块和第二滑块可以独立运动，第一调节杆上可以设置可供第一连接轴移动的第一调节杆通孔，使得第一连接轴连同第二滑块可以相对于第一调节杆沿第三方向往复移动，进而有利于使第二滑块可以脱离与第一调节杆的联动关系。第一调节杆通孔还可以构成第一连接轴的移动轨道。第一调节杆通孔可以有利于减少第二滑块的移动偏移量。
在一种可能的实现方式中，所述第一调节杆通孔沿所述第三方向的尺寸大于或等于所述第二滑块沿所述第三方向的移动行程。
在本申请中，通过合理设置第一调节杆通孔沿所述第三方向的尺寸，有利于避免第一调节杆通孔阻挡第一连接轴移动，或者有利于实现对第一连接轴的限位。
在一种可能的实现方式中，所述第一调节杆和所述第一滑块通过第二连接轴固定连接，所述第二调节杆包括第二调节杆通孔，所述第二连接轴贯穿所述第二调节杆通孔，并在所述第二调节杆通孔内可沿所述第一方向往复移动。
在本申请中，为使第一滑块和第二滑块可以独立运动，第二调节杆上可以设置可供第二连接轴移动的第二调节杆通孔，使得第二连接轴连同第一滑块可以相对于第二调节杆沿第一方向往复移动，进而有利于使第一滑块可以脱离与第二调节杆的联动关系。第二调节杆通孔还可以构成第二连接轴的移动轨道。第二调节杆通孔可以有利于减少第一滑块的移动偏移量。
在一种可能的实现方式中，所述第二调节杆通孔沿所述第一方向的尺寸大于或等于所述第一滑块沿所述第一方向的移动行程。
在本申请中，通过合理设置第一调节杆通孔沿所述第三方向的尺寸，有利于避免第一调节杆通孔阻挡第一连接轴移动，或者有利于实现对第一连接轴的限位。
在一种可能的实现方式中，所述第二调节杆的一端设置有调节杆突出部，所述调节杆突出部沿垂直于所述第一方向，朝向所述第一调节杆突出。
在本申请中，通过在第二调节杆设置调节杆突出部，使得第二调节杆的突出第一调节杆的部分可以对应第一推块的中心区域，有利于减少第二调节杆在移动过程中方向偏移的可能性。
在一种可能的实现方式中，所述卷绕装置还包括：内针支架，所述内针支架用于容置所述第一内针、所述第一滑块、所述第一推块、所述第二滑块、所述第二推块，其中，所述内针支架具有第一支架腔体和第二支架腔体，所述第一支架腔体用于容置 所述第一推块，所述第二支架腔体的开口朝向所述第一外针，所述第二支架腔体用于容置所述第二推块。
在本申请中，通过将多个可动部件集中设置在内针支架，有利于提高装置的集成度。
在一种可能的实现方式中，所述卷绕装置还包括：第一驱动杆，所述第一驱动杆用于向所述第一调节杆施加沿所述第一方向的驱动力；第二驱动杆，所述第二驱动杆用于向所述第二调节杆施加沿所述第三方向的驱动力；其中，所述第一驱动杆和所述第二驱动杆位于所述内针支架的两侧。
在本申请中，通过设置第一驱动杆和第二驱动杆，可以实现从不同位置对第一滑块和第二滑块分别驱动，有利于减少第一滑块和第二滑块相互干扰的可能性。
在一种可能的实现方式中，所述卷绕装置还包括：第一弹性元件，所述第一弹性元件用于向所述第一调节杆施加沿所述第一方向的相反方向的驱动力；第二弹性元件，所述第二弹性元件用于向所述第二调节杆施加沿所述第三方向的相反方向的驱动力。
在本申请中，通过设置第一弹性元件和第二弹性元件，使得第一调节杆和第二调节杆移动后可以恢复至初始位置。
在一种可能的实现方式中，所述卷绕装置还包括：卷针座，所述卷针座具有开口朝向所述内针支架的卷针座腔体，所述第一调节杆伸入所述卷针座腔体，所述第一弹性元件抵接于所述卷针座腔体的底壁。
在本申请中，第一弹性元件抵接于所述卷针座腔体的底壁，使得第一调节杆可以相对于卷针座腔体沿第一方向移动。
在一种可能的实现方式中，所述卷针座腔体的底壁设置有卷针座通孔，所述第一驱动杆贯穿所述卷针座通孔并伸入所述卷针座腔体；所述卷绕装置还包括驱动滑块，所述驱动滑块容置于所述卷针座腔体内，所述驱动滑块与所述第一调节杆固定连接，且在所述第一方向上相对于所述第一驱动杆固定，所述第一弹性元件抵接于所述驱动滑块和所述卷针座之间。
在本申请中，通过在卷针座内设置驱动滑块，并通过驱动滑块控制第一调节杆在第一方向的往复移动，有利于降低第一调节杆偏离第一方向移动的可能性。
在一种可能的实现方式中，所述卷绕装置还包括连接座，所述连接座位于所述卷针座和所述内针支架之间并覆盖所述卷针座腔体的开口，所述连接座包括连接座通孔，所述第一调节杆贯穿所述连接座通孔。
在本申请中，连接座可以连接在内针支架和卷针座之间起过渡作用，并且有利于减少微粒从卷针座流出。
在一种可能的实现方式中，所述第二弹性元件的一端固定于所述内针支架，所述第二弹性元件的另一端抵接于所述第二调节杆。
在本申请中，通过设置第二弹性元件，使得第二调节杆可以相对于内针支架沿第三方向的相反方向移动。
在一种可能的实现方式中，所述卷绕装置还包括：支撑部，所述支撑部容置于 所述内针支架内，所述支撑部设置有所述第一调节杆和所述第二调节杆的移动凹槽。
在本申请中，通过在支撑部设置移动凹槽，有利于限制第一调节杆和第二调节杆沿第一方向或第三方向移动，有利于减少第一调节杆和第二调节杆偏离移动的可能性。
在一种可能的实现方式中，所述支撑部包括支撑部开口，所述卷绕装置还包括第三推块，所述第三推块穿过所述支撑部开口，与所述第二调节杆固定连接，所述第三推块用于向所述第二调节杆施加沿所述第三方向的驱动力，所述支撑部开口在所述第三方向上的内径大于或等于所述第二调节杆在所述第三方向上的行程。
在本申请中，支撑部开口可以用于限制第三推块的最远行止位置，进而可以用限制第二滑块、第二推块的最远行止位置。
在一种可能的实现方式中，所述内针支架还包括与所述第一支架腔体贯通的第三滑槽，所述第一推块的主体容置于所述第一支架腔体内，所述第一推块还包括第一推块突出部，所述第一推块突出部在所述第三滑槽内可沿所述第二方向滑动，所述第一推块突出部与所述第三滑槽之间的滑动间隙小于所述第一推块的主体与所述第一支架腔体之间的滑动间隙。
在本申请中，第一推块的主体与第一支架腔体之间的滑动摩擦程度可以小于第一推块突出部与第三滑槽之间的滑动摩擦程度。因此，第一推块的主要摩擦区域可以集中在第一推块突出部，有利于减小第一推块的主体所参与的摩擦量。第一推块突出部与第三滑槽的接触面积相对较小，因此第一推块突出部与第三滑槽总体摩擦程度相对较小。第三滑槽例如可以充当第一推块的导轨，第一推块推出部例如可以充当第一推块的导轨配合件。
在一种可能的实现方式中，所述卷绕装置还包括扣合于所述第一支架腔体和/或所述第三滑槽的靠近所述第一外针的一端的盖板。
在本申请中，通过在第一支架腔体和/或第三滑槽的靠近所述第一外针的一端扣合盖板，有利于减少微粒掉出第一推块和第一支架腔体之间和/或第一推块和第三滑槽之间的缝隙的可能性。
在一种可能的实现方式中，所述内针支架还包括与所述第二支架腔体贯通的第四滑槽，所述第二推块的主体容置于所述第二支架腔体内，所述第二推块还包括第二推块突出部，所述第二推块突出部在所述第四滑槽内可沿所述第四方向滑动，所述第二推块突出部与所述第四滑槽之间的滑动间隙小于所述第二推块的主体与所述第二支架腔体之间的滑动间隙。
在本申请中，第二推块的主体与第二支架腔体之间的滑动摩擦程度可以小于第二推块突出部与第四滑槽之间的滑动摩擦程度。因此，第二推块的主要摩擦区域可以集中在第二推块突出部，有利于减小第二推块的主体所参与的摩擦量。第二推块突出部与第四滑槽的接触面积相对较小，因此第二推块突出部与第四滑槽总体摩擦程度相对较小。第四滑槽例如可以充当第二推块的导轨，第二推块推出部例如可以充当第二推块的导轨配合件。
在一种可能的实现方式中，所述卷绕装置还包括扣合于所述第四滑槽的靠近所 述第一外针的一端的盖板。
在本申请中，通过在第四滑槽的靠近所述第一外针的一端扣合盖板，有利于减少微粒掉出第二推块和第四滑槽之间的缝隙的可能性。
在一种可能的实现方式中，所述第一滑槽的远离所述第一滑块的开口扣合有盖板；和/或，所述第二滑槽的远离所述第二滑块的开口扣合有盖板；和/或，所述内针支架包括第一滑槽开口，所述第一滑槽开口与所述第一推块上的第一滑槽相对设置，所述第一滑块开口上扣合有盖板；和/或，所述内针支架包括第二滑槽开口，所述第二滑槽开口与所述第二推块上的第二滑槽相对设置，所述第二滑块开口上扣合有盖板。
在本申请中，通过在多个开口设置盖板，有利于减少微粒掉出开口的可能性，从而减少微粒掉落在电极组件的可能性。
在一种可能的实现方式中，所述卷绕装置还包括：螺纹紧固件，所述第一内针和所述第一推动块通过所述螺纹紧固件固定连接，所述内针支架包括锁紧开口，所述锁紧开口与所述螺纹紧固件相对设置，所述锁紧开口上扣合有盖板。
在本申请中，通过螺纹紧固件固定连接第一内针和第一推动块，有利于提高第一内针和第一推动块的连接稳定性。
在一种可能的实现方式中，所述卷绕装置还包括：磁吸部件，所述磁吸部件设置于所述内针支架，所述磁吸部件用于吸附所述内针支架内的微粒。
在本申请中，通过在内针支架设置磁吸部件，使得磁吸部件可以在微粒可能经过的路径周围对微粒进行吸附，从而减少微粒掉落在电极组件的可能性。
在一种可能的实现方式中，所述卷绕装置包括至少一个所述磁吸部件，所述至少一个所述磁吸部件设置在以下位置中的至少一个：所述第一内针的面向所述第一推块的一侧；所述第一推块的面向所述第一内针的一侧；所述第二推块的面向所述内针支架的一侧；所述内针支架的面向所述第二推块的一侧；所述内针支架的靠近所述第一滑槽的位置；所述内针支架的靠近所述第二滑槽的位置；所述内针支架的靠近所述第一内针的一侧；所述第一内针的靠近所述内针支架的一侧。
在本申请中，通过在多个位置设置磁吸部件，有利于减少微粒掉至电极组件的可能性。
在一种可能的实现方式中，所述第一方向和所述第三方向方向相同，沿所述第一方向，所述第一滑槽背离所述第二内针延伸，所述第二滑槽靠近所述第二内针延伸。
在本申请中，第一滑块和第二滑块的驱动方向一致，有利于减少在卷绕电极组件时对第一滑块和第二滑块的驱动方向的判断次数，有利于提高卷绕工艺的简易性。
第二方面，提供了一种卷绕设备，所述卷绕设备包括如第一方面或第一方面的任意可能的实现方式中所述的卷绕装置；驱动装置，所述驱动装置用于驱动所述卷绕装置。
本申请实施例提供一种卷绕装置和卷绕设备，具有独立调整内针周长和外针周长的特点。该卷绕装置和卷绕设备可以应用于电极组件的卷绕生产场景。另外，通过设置盖板、磁吸部件和磁吸盖板，有利于减少卷绕装置内的微粒掉落在电极组件上，提高电极组件的生产质量。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1是本申请一实施例提供的一种卷绕装置的示意性结构图；
图2是本申请一实施例提供的一种卷绕装置的示意性结构图；
图3是本申请一实施例提供的一种第一内针组件和第二内针组件的示意性结构图；
图4是本申请一实施例提供的一种第一内针组件和第二内针组件的示意性结构图；
图5是本申请一实施例提供的一种第一内针组件的示意性结构图；
图6是图5中的第一内针组件在截面A-A的截面图；
图7是图5中的第一内针组件在截面B-B的截面图；
图8是图5中的第一内针组件在截面C-C的截面图；
图9是图5中的第一内针组件在截面D-D的截面图；
图10是本申请一实施例提供的一种第一内针组件的示意性结构图；
图11是图10中的第一内针组件在截面E-E的截面图；
图12是图10中的第一内针组件在截面F-F的截面图；
图13是本申请实施例提供的一种卷针座和连接座的截面图；
图14是本申请实施例提供的一种卷针座和连接座的示意性结构图；
图15是本申请实施例提供的一种内针的示意性结构图；
图16是本申请实施例提供的一种内针支架的示意性结构图；
图17是本申请实施例提供的一种内针支架的示意性结构图；
图18是本申请实施例提供的极耳错位的调整方法的示意图。
在附图中，附图并未按照实际的比例绘制。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意 义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
下述描述中出现的方位词均为图中示出的方向，并不是对本申请的具体结构进行限定。在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
本申请中，电池是指包括一个或多个电池单体以提供电能的物理模块。例如，本申请中所提到的电池可以包括电池模组或电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
可选地，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。在一些实施方式中，电池单体也可称之为电芯。
电池单体包括电极组件和电解液，电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为聚丙烯(Polypropylene，PP)或聚乙烯(Polyethylene，PE)等。
具有卷绕式结构的电极组件可以通过卷绕设备制备得到。卷绕设备可以包括驱动装置和卷绕装置。驱动装置可以用于驱动卷绕装置旋转，以实现电极组件的卷绕。在卷绕过程中，卷绕装置可以固定电极组件；通过驱动装置驱动卷绕装置旋转，电极组件可以卷绕于卷绕装置的外周，从而可以获得具有卷绕式结构的电极组件。
图1是本申请实施例提供一种卷绕装置10的示意性结构图。卷绕装置10可以包括相对设置的第一内针110和第二内针120，第一内针110和第二内针120可以用于夹紧电极组件20；卷绕装置10还可以包括相对设置的第一外针130和第二外针140，第一外针130和第二外针140的外周可以用于卷绕电极组件20。
第一内针110和第二内针120可以构成卷绕装置10的内针组装件，第一外针130和第二外针140可以构成卷绕装置10的外针组装件。外针组装件可以具有用于容纳内针组装件的容纳空间，以使得内针组装件可以设置在外针组装件的内部。内针组装件可以用于夹紧电极组件20，外针组装件的外周可以用于承载、卷绕电极组件20。在卷绕过程中，电极组件20的一部分可以位于外针组装件的内部，并被内针组装件夹 紧，电极组件20的其他部分可以从外针组装件内部伸出，并卷绕在外针组装件的外周。
在卷绕工艺结束后，电极组件20可以从图1所示的卷绕装置10取下。为便于电极组件20取下，第一内针110和第二内针120可以相互远离，第一内针110和第二内针120的间距可以增大，以使得第一内针110和第二内针120可以松开电极组件20；第一外针130和第二外针140可以相互靠近，第一外针130和第二外针140的间距可以被缩小，以使得第一外针130和第二外针140的外周可以脱离与电极组件20的接触。
如图1所示，第一外针130可以包括第一端面和第一外表面，第一端面为第一外针130的面向第二外针140的表面，第一外表面为第一外针130的背离第一外针130的表面。第一端面和第一外表面的连接处可以形成凸角，如图1中圈出的位置所示。在第一外针130靠近第二外针140的过程中，该凸角可以朝向电极组件20移动。
在一种可能的情况下，第一内针110和第一外针130通过同一驱动件驱动，以实现第一内针110远离第二内针120的过程，和第一外针130靠近第二外针140的过程可以同时进行。这可能意味着，当第一内针110和第二内针120未完全松开电极组件20时，该凸角与电极组件20之间的距离很近，甚至该凸角可以与电极组件20接触。随着第一外针130向第二外针140靠近，该凸角可能局部拉扯电极组件20，增大电极组件20破裂的可能性，进而降低电极组件20的加工质量和使用性能。
鉴于以上问题，本申请实施例提供一种卷绕装置和卷绕设备，通过不同的驱动件分别对内针和外针驱动，实现内针和外针的独立控制，使得内针周长变大的过程和外针周长缩小的过程可以独立进行。
图2是本申请实施例提供一种卷绕装置10的示意性结构图。图2所示的卷绕装置10可以应用于卷绕设备。图3和图4示出了本申请实施例提供的第一内针组件110和第二内针组件120的立体结构图。本申请主要以第一内针组件110为例阐述本申请提供的有关内针组件的实施例，第二内针组件120的实施例可以参照有关第一内针组件110的实施例。
卷绕装置10可以包括相对设置的第一内针110和第二内针120，第一内针110和第二内针120可以用于夹紧图1所示的电极组件20；卷绕装置10还可以包括相对设置的第一外针130和第二外针140，第一外针130和第二外针140的外周可以用于卷绕电极组件20。
结合图2至图5，卷绕装置10可以包括第一内针组件11、第二内针组件12、第一外针组件、第二外针组件。第一内针组件11可以包括第一内针110，第二内针组件12可以包括第二内针120，第一外针组件可以包括第一外针130，第二外针组件可以包括第二外针140。第一内针110可以位于第一内针组件11的面向第二内针组件12的一侧。第二内针120可以位于第二内针组件12的面向第一内针组件11的一侧。在一些实施例中，第一外针130可以位于第一外针组件的背离第二外针组件的一侧。第二外针140可以位于第二外针组件的背离第一外针组件的一侧。
第一内针组件11和第二内针组件12可以位于第一外针组件(或第一外针130)和第二外针组件(或第二外针140)之间的间隔空间内。第一外针组件的靠近第二外针组件的一侧可以具有第一容纳空间，第一内针组件11可以设置在第一容纳空间内。第 二外针组件的靠近第一外针组件的一侧可以具有第二容纳空间，第二内针组件12可以设置在第二容纳空间内。
在一些实施例中，第一内针组件11的第一内针110可以在朝着靠近第二内针组件12的第二内针120的方向移动，以缩小第一内针110和第二内针120的间距。通过缩小第一内针110和第二内针120之间的距离，电极可以被第一内针110和第二内针120夹紧。第一内针110还可以朝着远离第二内针120的方向移动，以增大第一内针110和第二内针120的间距。通过增大第一内针110和第二内针120的间距，第一内针110和第二内针120可以松开电极。类似地，第二内针120可以朝向或背离第一内针110移动，以调整第一内针110和第二内针120的间距。
在一些实施例中，第一内针组件11与第一外针组件(或第一外针130)可以相对移动。例如，第一外针组件可以朝向或背离第一内针组件11移动，从而第一外针130和第二外针140的外周轮廓可以被缩小或被增大。在一种可能的情况下，第二内针组件12与第二外针组件(或第二外针140)可以相对移动。在另一种可能的情况下，第二内针组件12的面向第二外针组件的一侧可以固定于第二外针组件。
第一外针130的远离第二外针140的外表面，以及第二外针140的远离第一外针130的外表面可以用于与电极组件20接触。在第一内针110和第二内针120夹紧电极组件20后，电极组件20可以伸出第一外针130和第二外针140的间隔空间，并附着在第一外针130的远离第二外针140的外表面，以及第二外针140的远离第一外针130的外表面，从而电极组件20可以环绕在第一外针130和第二外针140的外周。
在一些实施例中，第一外针130的靠近第二外针140的端面，与第一内针组件11的靠近第二内针组件12的端面之间的间距可以相对较小，例如第一外针130的靠近第二外针140的端面可以与第一内针组件11的靠近第二内针组件12针组件的端面齐平。这有利于提高第一外针130与电极组件20的接触面积，进而有利于减少电极组件20被第一外针组件刮碰、刺破的概率。类似地，第二外针140的靠近第一外针130的端面，与第二内针组件12的靠近第一内针组件11的端面之间的间距可以相对较小。
第一外针130的远离第二外针140的外表面的形状可以与电极组件20的卷绕结构匹配。例如，当电极组件20的卷绕结构为椭圆柱结构，则第一外针130的远离第二外针140的外表面的横截曲线可以为椭圆弧(椭圆弧可以是椭圆的部分弧线)。在图2所示的实施例中，第一外针130的远离第二外针140的外表面可以呈圆弧形，以使得电极组件20的卷绕结构可以为圆柱形结构。本申请实施例可以不限定电极组件20的具体卷绕结构，也不限定第一外针130的远离第二外针140的外表面的具体形状。类似地，第二外针140的远离第一外针130的外表面的形状可以与电极组件20的卷绕结构匹配。
图5示出了本申请实施例提供的第一内针组件11的平面结构图。
卷绕装置10还可以包括第一滑块112和第一推块111，第一推块111与第一内针110固定连接，第一推块111上设置有第一滑槽113，第一滑块112在第一滑槽113内可移动，第一滑块112被配置沿第一方向往复移动，第一滑槽113的延伸方向倾斜于第一方向，以使第一推块111带动第一内针110沿第二方向往复移动，以夹紧或松开电极组件20，第二方向垂直于第一方向。
卷绕装置10还包括第二滑块115和第二推块114，第二推块114与第一外针130固定连接，第二推块114上设置有第二滑槽116，第二滑块115在第二滑槽116内可移动，第二滑块115被配置沿第三方向往复移动，第二滑槽116的延伸方向倾斜于第三方向，以使第二推块114带动第一外针130沿第四方向往复移动，以扩大或缩小第一外针130和第二外针140之间的间距，第三方向平行于第一方向，第四方向垂直于第三方向。
如图2至图5所示，假设存在XYZ坐标系，X轴方向、Y轴方向和Z轴方向相互正交。第一内针110、第二内针120、第一外针130和第二外针140的延伸方向可以平行于X轴方向。
通过驱动第一内针110沿Y-方向移动，和/或通过驱动第二内针120沿Y+方向移动，可以使第一内针110与第二内针120的间距被缩小。类似地，通过驱动第一内针110沿Y+方向移动，和/或通过驱动第二内针120沿Y-方向移动，可以使第一内针110与第二内针120的间距被增大。下面以驱动第一内针110的实施例为例进行说明，驱动第二内针120的实施例可以参照有关第一内针110的实施例。
第一滑槽113的延伸方向与X轴方向的夹角可以为α，α≠0。第一滑槽113的延伸方向可以具有平行于X轴的第一分量，和平行于Y轴的第二分量。在本申请提供的一个实施例中，如图5所示，第一分量可以与X+方向同向，第二分量可以与Y+方向同向，或者，第一分量可以与X-方向同向，第二分量可以与Y-方向同向。
当第一滑块112在第一推块111的第一滑槽113内沿X+方向移动时，第一滑块112在Y轴方向的位移分量可以为零或相对较小以至于忽略不计。由于第一滑槽113的延伸方向在Y轴方向具有分量，第一滑块112可以通过可以向第一滑槽113施加推力，以使得设置有第一滑槽113的第一推块111可以沿Y-方向移动。由于第一推块111与第一内针110连接，因此第一内针110可以在第一推块111的推动下朝向第二内针120移动。
结合图3至图5，通过驱动第一外针130沿Y-方向移动，和/或通过第二外针140沿Y+方向移动，可以使第一外针130与第二外针140的间距被缩小。类似地，通过驱动第一外针130沿Y+方向移动，和/或通过第二外针140沿Y-方向移动，可以使第一外针130与第二外针140的间距被增大。下面以驱动第一外针130的实施例为例进行说明，驱动第二外针140的实施例可以参照有关第一外针130的实施例。
第二滑槽116的延伸方向与X轴方向的夹角可以为β，β≠0。第二滑槽116的延伸方向可以具有平行于X轴的第三分量，和平行于Y轴的第四分量。在本申请提供的一个实施例中，第三分量可以与X+方向同向，第四分量可以与Y-方向同向，或者，第三分量可以与X-方向同向，第四分量可以与Y+方向同向。
当第二滑块115在第二滑槽116内沿X+方向移动时，第二滑块115在Y轴方向的位移分量可以为零或相对较小以至于忽略不计。由于第二滑槽116的延伸方向在Y轴方向具有分量，第二滑块115可以通过可以向第二滑槽116施加推力，以使得设置有第二滑槽116的第二推块114可以沿Y+方向移动。由于第二推块114与第一外针130连接，因此第一外针130可以在第二推块114的推动下背离第二外针140移动。
在本申请提供的实施例中，通过第一滑块112和设置有第一滑槽113的第一推 块111，可以实现第一内针110的驱动，通过第二滑块115和设置有第二滑槽116的第二推块114，可以实现第一外针130的驱动。因此，第一内针110和第一外针130可以被独立驱动，有利于灵活调整卷绕工艺参数，还有利于减少第一外针130对电极组件20的剐蹭程度，进而有利于提高电极组件20的加工质量。
可选地，所述卷绕装置10还包括：内针支架131，所述内针支架131用于容置所述第一内针110、所述第一滑块112、所述第一推块111、所述第二滑块115、所述第二推块114，其中，所述内针支架131具有第一支架腔体132和第二支架腔体133，所述第一支架腔体132用于容置所述第一推块111，所述第二支架腔体133的开口朝向所述第一外针130，所述第二支架腔体133用于容置所述第二推块114。
在图3至图12所示的实施例中，第一推块111、第一滑块112、第二推块114、第二滑块115均属于第一内针组件11的结构。第一内针组件11可以包括用于容置第一内针110、第一推块111、第一滑块112、第二推块114、第二滑块115的内针支架131。如图3所示，第一推块111可以在内针支架131的第一支架腔体132内沿第二方向往复移动，第二推块114可以在内针支架131的第二支架腔体133内沿第四方向往复移动。
在另一个可能的实施例中，第一推块111、第一滑块112还可以设置于图2所示的第一外针组件。在又一个可能的实施例中，第二推块114、第二滑块115还可以设置于图2所示的第一外针组件。
可选地，所述卷绕装置10还包括扣合于内针支架131的靠近所述第一外针130的一侧的盖板191。
在卷绕过程中，第一推块111在第一支架腔体132内移动，第二推块114在第二支架腔体133内移动，因此第一推块111和内针支架131之间，以及第二推块114和内针支架131之间可以发生滑动摩擦，进而产生微粒。微粒可能会掉落在电极组件20上，从而可能戳破电极组件20被微粒，进而降低电极组件20的成品率。如图4所示，通过在内针支架131的靠近所述第一外针130的一侧扣合盖板191，有利于减少内针支架131内的微粒掉出内针支架131的可能性。
可选地，所述卷绕装置10还包括：螺纹紧固件141，所述第一内针110和所述第一推块111通过所述螺纹紧固件141固定连接。
图6示出了图5中的A-A截面的截面图。在一些实施例中，第一推块111可以包括用于容纳第一内针110的腔体，第一内针110可以固定在该腔体内，从而第一内针110可以跟随第一推块111移动。
第一推块111上可以设置有安装孔，第一内针110上可以设置有螺纹孔，安装孔和螺纹孔可以相对设置。安装孔的孔轴和螺纹孔的孔轴可以垂直于第一内针110的延伸方向。例如，在图5和图6所示的实施例中，安装孔的孔轴和螺纹孔的孔轴可以平行于Z轴方向。螺纹紧固件141可以穿安装孔并固定在螺纹孔内，以实现第一推块111与第一内针110的固定连接。在一种可能的情况下，安装孔的孔轴和螺纹孔的孔轴可以共轴设置。
在图6所示的实施例中，第一推块111的安装孔可以是台阶孔1。安装孔可以包括内径较大的沉孔1和内径较小的通孔1，通孔1位于沉孔1的靠近第一内针110的 一侧。第一内针110上可以设置有台阶孔2，台阶孔2可以包括内径较大的沉孔2和上述螺纹孔，螺纹孔的内径可以小于沉孔2的内径，且沉孔2的内径可以与通孔1的内径相同，沉孔2可以位于螺纹孔的靠近第一推块111的一侧。
卷绕装置10还可以包括衬套142，衬套142的外径可以与沉孔2、通孔1的内径匹配，衬套142可以连接在沉孔2和通孔1之间。衬套142还可以包括通孔2，通孔2的孔轴可以与螺纹孔的孔轴平行设置。螺纹紧固件141可以穿过第一推块111的沉孔1、衬套142的通孔2，并固定在第一内针110的螺纹孔上。
通过设置衬套142，有利于维持螺纹紧固件141相对于第一内针110的方位基本不变，有利于减小第一推块111相对于第一内针110的晃动量，提高第一推块111的稼动率，从而有利于精确调整第一内针110和第二内针120的间距。
在图6所示的实施例中，螺纹紧固件141的数量可以为多个。例如，多个螺纹紧固件141可以设置在第一推块111的两侧。也就是说，第一推块111的两侧可以与第一内针110的两侧可以分别通过两个螺纹紧固件141固定连接。
在本申请提供的其他实施例中，第一推块111与第一内针110还可以通过其他方式固定连接，例如胶粘、焊接、铆接、过盈配合等。
可选地，所述内针支架131包括锁紧开口134，所述锁紧开口134与所述螺纹紧固件141相对设置，所述锁紧开口134上扣合有盖板191。
如图3、图5和图6所示，为便于从内针支架131外侧将螺纹紧固件141锁紧至第一内针110，内针支架131可以包括锁紧开口134，所述锁紧开口134与所述螺纹紧固件141相对设置。由于第一推块111可以设置在内针支架131内相对于内针支架131滑动，第一推块111相对于内针支架131滑动所产生的微粒可能通过锁紧开口134流出。如图4所示，通过在锁紧开口134上扣合有盖板191，有利于减少通过锁紧开口134的微粒量。
在本申请提供的实施例中，第二推块114与第一外针130可以通过螺纹紧固件、胶粘、焊接、铆接、过盈配合等方式固定连接。
可选地，卷绕装置10还可以包括第一调节杆151，第一调节杆151可以相对于第一方向平行设置，第一调节杆151与第一滑块112固定连接，第一调节杆151可以被配置沿第一方向往复移动以带动第一滑块112沿第一方向往复移动。
可选地，卷绕装置10还可以包括第二调节杆152，第二调节杆152可以相对于第三方向平行设置，第二调节杆152与第二滑块115固定连接，第二调节杆152被配置沿第三方向往复移动以带动第二滑块115沿第三方向往复移动。
图7示出了图5中的B-B截面的截面图。图8示出了图5中的C-C截面的截面图。图9示出了图5中的D-D截面的截面图。图10示出了在沿图5所示的Y-方向的视角下第一内针组件11的示意性结构图。图11示出了图10中的E-E截面的截面图。E-E截面可以穿过第一调节杆151。图12示出了图10中的F-F截面的截面图。F-F截面可以穿过第二调节杆152。
结合图5至图12所示的实施例，第一调节杆151可以与第二调节杆152并排设置。第一调节杆151和第二调节杆152的排列方向例如可以平行于Z轴方向。
可选地，所述卷绕装置10还包括支撑部135，所述支撑部135容置于所述内针支架131内，所述支撑部135设置有所述第一调节杆151和所述第二调节杆152的移动凹槽1351。在本申请提供的一些实施例中，支撑部135例如可以是内针支架131的一部分。
如图6至图9所示，支撑部135可以设置在第一推块111的内腔内，也就是说，第一推块111可以用于承载支撑部135。如图6所示，支撑部135的远离第一外针130的一侧可以与第一内针110的靠近第一外针130的一侧接触或相对设置。支撑部135的延伸方向可以平行于X轴方向。第一支撑部135可以具有沿X轴方向延伸的通槽，第一调节杆151和第二调节杆152贯穿该通槽。通槽在Y轴方向的内径可以与第一调节杆151和第二调节杆152在Y轴方向的外径匹配。通过在支撑部135设置移动凹槽1351，有利于限制第一调节杆151和第二调节杆152沿X轴方向移动，有利于减少第一调节杆151和第二调节杆152偏离X轴方向的位移量。
支撑部135在与第一滑块112相对的位置可以具有沿Z轴方向的通孔1，第一调节杆151和第一滑块112之间的连接件可以穿过支撑部135的通孔1。支撑部135在与第二滑块115相对的位置可以具有沿Z轴方向的通孔2，第二调节杆152和第二滑块115之间的连接件可以穿过支撑部135的通孔2。
如图8所示，第二推块114例如可以设置在支撑部135的远离第一内针110的一侧。第二推块114与支撑部135之间可以具有间隙，有利于减少第二推块114在第四方向往复移动时撞击支撑部135的可能性。
结合图2和图5，卷绕设备或卷绕装置10可以包括第一驱动杆230和第二驱动杆240。第一驱动杆230和第二驱动杆240可以属于卷绕设备或卷绕装置10的驱动装置的部件。在一些实施例中，第一驱动杆230和第二驱动杆240中的至少一个可以属于卷绕装置10的部件。在另一些实施例中，第一驱动杆230和第二驱动杆240中的至少一个可以属于卷绕设备的除卷绕装置10以外的部件。
可选地，所述卷绕装置10还包括：第一驱动杆230，所述第一驱动杆230用于向所述第一调节杆151施加沿所述第一方向的驱动力；第二驱动杆240，所述第二驱动杆240用于向所述第二调节杆152施加沿所述第三方向的驱动力；其中，所述第一驱动杆230和所述第二驱动杆240位于所述内针支架131的两侧。
第一驱动杆230可以在第一内针组件11的外部向第一调节杆151施力，使第一调节杆151可以沿第一方向移动。第二驱动杆240可以在第一内针组件11的外部向第二调节杆152施力，使第二调节杆152可以沿第三方向移动。
在图2所示的实施例中，第一驱动杆230和第二驱动杆240可以分别位于第一内针组件11的两侧。在其他可能的实施例中，第一驱动杆230和第二驱动杆240可以位于第一内针组件11的同侧。也就是说，第一驱动杆230和第二驱动杆240可以在第一内针组件11的同侧分别向第一调节杆151和第二调节杆152施加驱动力。
在图2至图12所示的实施例中，当第一驱动杆230朝向远离第一内针组件11的方向拉动第一调节杆151时，第一调节杆151可以朝X+方向(第一方向)移动，由于第一调节杆151与第一滑块112固定连接，因此第一滑块112可以朝X+方向，以推 动第一推块111朝Y-方向(第二方向)移动，进而缩小第一内针110和第二内针120之间的距离，以夹紧电极组件20。相对应地，当第一调节杆151朝X-方向(第一方向的相反方向)移动时，第一滑块112可以推动第一推块111朝Y+方向(第二方向的相反方向)移动，进而增大第一内针110和第二内针120之间的距离，以松开电极组件20。
在另一个实施例中，第一滑槽113的延伸方向可以与图5所示的第一滑槽113的延伸方向不同。第一滑槽113的延伸方向可以具有平行于X轴的第一分量，和平行于Y轴的第二分量，其中第一分量可以与X-方向同向，第二分量可以与Y+方向同向，或者，第一分量可以与X+方向同向，第二分量可以与Y-方向同向。因此，当第一驱动杆230朝向靠近第一内针组件11的方向推动第一调节杆151时，第一调节杆151可以朝X-方向(第一方向)移动，以使得第一滑块112可以推动第一推块111朝Y-方向(第二方向)移动，进而缩小第一内针110和第二内针120之间的距离，以夹紧电极组件20。相对应地，当第一调节杆151朝X+方向(第一方向的相反方向)移动时，第一滑块112可以推动第一推块111朝Y+方向(第二方向的相反方向)移动，进而增大第一内针110和第二内针120之间的距离，以松开电极组件20。
综上所述，第一滑块112的驱动方向即第一方向的具体朝向可以是任意的。
在图2至图12所示的实施例中，当第二驱动杆240朝向靠近第一内针组件11的方向推动第二调节杆152时，第二调节杆152可以朝X+方向(第三方向)移动，由于第二调节杆152与第二滑块115固定连接，因此第二滑块115可以朝X+方向，以使得第二滑块115可以推动第二推块114朝Y+方向(第四方向)移动，进而增大第一外针130和第二外针140之间的距离，以接触并承载电极组件20。相对应地，当第二调节杆152朝X-方向(第三方向的相反方向)移动时，第二滑块115可以推动第二推块114朝Y-方向(第四方向的相反方向)移动，进而缩小第一外针130和第二外针140之间的距离，以脱离与电极组件20的接触。
在其他可能的实施例中，第二滑槽116的延伸方向可以与图5所示的延伸方向不同。第二滑槽116的延伸方向可以具有平行于X轴的第三分量，和平行于Y轴的第四分量，其中第三分量可以与X-方向同向，第四分量可以与Y-方向同向，或者，第三分量可以与X+方向同向，第四分量可以与Y+方向同向。因此，当第二驱动杆240朝向远离第一内针组件11的方向拉动第二调节杆152时，第二调节杆152可以朝X-方向(第三方向)移动，以使得第一滑块112可以推动第二推块114朝Y+方向(第四方向)移动，进而增大第一外针130和第二外针140之间的距离，以接触并承载电极组件20。相对应地，当第二调节杆152朝X+方向(第三方向的相反方向)移动时，第二滑块115可以推动第二推块114朝Y-方向(第四方向的相反方向)移动，进而缩小第一外针130和第二外针140之间的距离，以脱离与电极组件20的接触。
综上所述，第二滑块115的驱动方向即第三方向的具体朝向可以是任意的。
又由于在本申请提供的实施例中，外针和内针可以独立控制，因此第一方向可以与第三方向相同或不同。可选地，所述第一方向和所述第三方向方向相同，沿所述第一方向，所述第一滑槽113背离所述第二内针120延伸，所述第二滑槽116靠近所述第二内针120延伸。
在本申请提供的一些实施例中，第一推块111可以具有多个第一滑槽113，多个第一滑槽113可以均布于第一内针组件11。卷绕装置10还可以包括多个第一滑块112，多个第一滑块112可以与多个第一滑槽113一一对应，每个第一滑块112可以在对应的第一滑槽113内可移动。多个第一滑槽113的延伸方向可以相互平行。
在图5所示的一个实施例中，两个第一滑槽113可以沿X轴方向分别位于第一内针组件11的两侧。结合图2，两个第一滑槽113中的一个可以位于第一内针组件11的靠近第一驱动杆230的一侧，另一个可以位于第一内针组件11的靠近第二驱动杆240的一侧。
在图7所示的一个实施例中，两个第一滑槽113可以沿Z轴方向分别位于第一内针组件11的两侧。两个第一滑槽113例如可以相对于第一推块111的中轴对称设置。
当第一调节杆151沿第一方向移动时，多个第一滑槽113可以被第一调节杆151同步带动，以使得多个第一滑槽113可以沿第一方向移动，进而使多个第一滑槽113可以带动第一推块111沿第二方向移动。因此，通过对称、均布设置的多个第一滑槽113以及多个第一滑槽113，可以有利于降低第一推块111、第一调节杆151在移动过程中发生过度偏转的可能性。在图7所示的实施例中，第一调节杆151可以穿过第一推块111，第一调节杆151可以与第一推块111的中心区域相对设置。
在本申请提供的另一些实施例中，第二推块114可以具有多个第二滑槽116，多个第二滑槽116可以均布于第一内针组件11。卷绕装置10还可以包括多个第二滑块115，多个第二滑块115可以与多个第二滑槽116一一对应，每个第二滑块115可以在相对应的第二滑槽1162内可移动。多个第二滑槽116的延伸方向可以相互平行。
在图5所示的一个实施例中，两个第二滑块115可以沿X轴方向分别位于第一内针组件11的两侧。结合图2，两个第二滑块115中的一个可以位于第一内针组件11的靠近第一驱动杆230的一侧，另一个可以位于第一内针组件11的靠近第二驱动杆240的一侧。
在图8所示的一个实施例中，两个第二滑块115可以沿Z轴方向分别位于第一内针组件11的两侧。两个第二滑槽116例如可以相对于第二推块114的中轴对称设置。
当第二调节杆152沿第三方向移动时，多个第二滑块115可以被第二调节杆152同步带动，以使得多个第二滑块115可以沿第四方向移动，进而使多个第二滑块115可以带动第二推块114沿第四方向移动。因此，通过对称、均布设置的多个第二滑块115以及多个第二滑槽116，可以有利于降低第二推块114、第二调节杆152在移动过程中发生过度偏转的可能性。在图8所示的实施例中，第二调节杆152可以穿过第二推块114，第二调节杆152可以与第二推块114的中心区域相对设置。
可选地，所述第二调节杆152和所述第二滑块115通过第一连接轴117固定连接，所述第一调节杆151包括第一调节杆通孔1511，所述第一连接轴117贯穿所述第一调节杆通孔1511，并在所述第一调节杆通孔1511内可沿所述第三方向往复移动。
结合图8，卷绕装置10还可以包括第一连接轴117，第二调节杆152还可以包括第三调节杆通孔1522，第一连接轴117可以固定在第三调节杆通孔1522内，以实现第一连接轴117和第二调节杆152固定连接。第一连接轴117的远离第二调节杆152的 一侧可以固定于第二滑块115，以实现第二调节杆152与第二滑块115固定连接。也就是说，第一连接轴117可以固定连接在第二调节杆152与第二滑块115之间。
在一些实施例中，第三调节杆通孔1522的内径可以与第一连接轴117的外径匹配(即第三调节杆通孔1522的内径可以与第一连接轴117的外径相同或近似相同)。在一个实施例中，第一连接轴117可以与第三调节杆通孔1522过盈配合，以使得第一连接轴117可以固定在第三调节杆通孔1522内。在另一个实施例中，第一连接轴117可以通过例如胶粘、焊接等方式固定在第三调节杆通孔1522内。
在本申请提供的一个实施例中，结合图2和图5，第二滑块115可以位于第一滑块112和用于驱动第一滑块112的第一驱动杆230之间。第一调节杆151可以由第一滑块112朝向第一驱动杆230延伸，并经过与第二滑块115固定连接的第一连接轴117。为使第一滑块112和第二滑块115可以独立运动，第一调节杆151上可以设置可供第一连接轴117移动的第一调节杆通孔1511，使得第一连接轴117连同第二滑块115可以相对于第一调节杆151沿第三方向往复移动，进而有利于使第二滑块115可以脱离与第一调节杆151的联动关系。
在一些实施例中，为减少第一连接轴117与第一调节杆通孔1511之间的摩擦，在垂直于第一连接轴117的方向(对应Y轴方向)上，第一调节杆通孔1511的内径可以大于第一连接轴117的外径。
第一调节杆通孔1511还可以构成第一连接轴117的移动轨道。第一调节杆通孔1511可以有利于限制第一连接轴117在Y轴方向的位移分量，也就是说，第一调节杆通孔1511可以有利于减少第二滑块115的移动方向与X轴方向的偏移量。
可选地，所述第一调节杆通孔1511沿所述第三方向的尺寸大于或等于所述第二滑块115沿所述第三方向的移动行程。
如图8所示，第三方向可以平行于X轴方向。第二滑块115通常不会朝着第三方向或第三方向的相反反向无止境地移动，因此第二滑块115在第三方向上的最大移动距离可以是第二滑块115沿所述第三方向的移动行程。第一调节杆通孔1511沿所述第三方向的尺寸大于第二滑块115沿所述第三方向的移动行程，有利于避免第一调节杆通孔1511阻挡第一连接轴117连同第二滑块115在第三方向往复移动。
可选地，所述第一调节杆151和所述第一滑块112通过第二连接轴118固定连接，所述第二调节杆152包括第二调节杆通孔1521，所述第二连接轴118贯穿所述第二调节杆通孔1521，并在所述第二调节杆通孔1521内可沿所述第一方向往复移动。
结合图7，卷绕装置10还可以包括第二连接轴118，第一调节杆151还可以包括第四调节杆通孔1512，第二连接轴118可以固定在第四调节杆通孔1512内，以实现第二连接轴118和第一调节杆151固定连接。第二连接轴118的远离第一调节杆151的一侧可以固定于第一滑块112，以实现第一调节杆151与第一滑块112固定连接。也就是说，第二连接轴118可以固定连接在第一调节杆151与第一滑块112之间。
在一些实施例中，第四调节杆通孔1512的内径可以与第二连接轴118的外径匹配。在一个实施例中，第二连接轴118可以与第四调节杆通孔1512过盈配合、胶粘、焊接等方式固定在第四调节杆通孔1512内。
在本申请提供的一个实施例中，结合图2和图5，第一滑块112可以位于第二滑块115和用于驱动第二滑块115的第二驱动杆240之间。第二调节杆152可以由第二滑块115朝向第二驱动杆240延伸，并经过与第一滑块112固定连接的第二连接轴118。为使第一滑块112和第二滑块115可以独立运动，第二调节杆152上可以设置可供第二连接轴118移动的第二调节杆通孔1521，使得第二连接轴118连同第一滑块112可以相对于第二调节杆152沿第一方向往复移动，进而有利于使第一滑块112可以脱离与第二调节杆152的联动关系。
在一些实施例中，为减少第二连接轴118与第二调节杆通孔1521之间的摩擦，在垂直于第二连接轴118的方向(对应Y轴方向)上，第二调节杆通孔1521的内径可以大于第二连接轴118的外径。
第二调节杆通孔1521还可以构成第二连接轴118的移动轨道。第二调节杆通孔1521可以有利于限制第二连接轴118在Y轴方向的位移分量，也就是说，第二调节杆通孔1521可以有利于减少第一滑块112的移动方向与X轴方向的偏移量。
可选地，所述第二调节杆通孔1521沿所述第一方向的尺寸大于或等于所述第一滑块112沿所述第一方向的移动行程。
第一滑块112通常不会朝着第一方向或第一方向的相反反向无止境地移动，因此第一滑块112在第一方向上的最大移动距离可以是第一滑块112沿所述第一方向的移动行程。第二调节杆通孔1521沿所述第一方向的尺寸大于第一滑块112沿所述第一方向的移动行程，有利于避免第二调节杆通孔1521阻挡第二连接轴118连同第一滑块112在第一方向往复移动。
可选地，所述第二调节杆152的一端设置有调节杆突出部1523，所述调节杆突出部1523沿垂直于所述第一方向，朝向所述第一调节杆151突出。
结合图2、图5、图8至图12，第一调节杆151和第二调节杆152可以对应内针支架131的中心区域，其中，第一调节杆151可以位于内针支架131的中心线的一侧，内针支架131可以位于第一推块111的中心线的另一侧。在靠近第二驱动杆240的一侧，第二调节杆152与第二驱动杆240的间距可以小于第一调节杆151与第二驱动杆240的间距，也就是说，第二调节杆152沿Z轴方向的第二正投影可以从第一调节杆151沿Z轴方向的第一正投影向X-方向伸出。因此，在第二调节杆152的对应第一正投影以外的部分设置调节杆突出部1523，且调节杆突出部1523可以朝向第一调节杆151突出，使得第二调节杆152的对应第一正投影以外的部分可以对应第一推块111的中心区域，有利于减少第二调节杆152在移动过程中相对于X轴方向偏移的可能性。
可选地，所述卷绕装置10还包括：第一弹性元件161，所述第一弹性元件161用于向所述第一调节杆151施加沿所述第一方向的相反方向的驱动力。
第一驱动杆230可以向第一调节杆151施加沿所述第一方向的驱动力，以使第一调节杆151可以沿第一方向移动，假设由A位置移动到A’位置。在第一调节杆151由A位置移动到A’位置的过程中，第一弹性元件161可以逐渐被伸长或逐渐压缩。在撤除或减少第一驱动杆230作用在第一调节杆151上沿第一方向的作用力后，由于第一弹性元件161自身的弹性恢复力(恢复力的方向可以为第一方向的相反方向)，使得第 一驱动杆230可以在第一弹性元件161的驱动下恢复至初始位置，即从A’位置回归至A位置，以便于进行下一批次的卷绕工艺。
可选地，所述卷绕装置10还包括：卷针座腔体211，所述卷针座腔体211具有开口朝向所述内针支架131的卷针座腔体211，所述第一调节杆151伸入所述卷针座腔体211，所述第一弹性元件161抵接于所述卷针座腔体211的底壁。
图13示出了本申请实施例提供的一种卷针座腔体211的示意性结构图。结合图2和图13，卷绕装置10可以包括卷针座腔体211，卷针座腔体211可以位于第一驱动杆230和第一内针组件11之间。第一调节杆151可以从第一内针组件11伸出，并伸入卷针座腔体211内。第一弹性元件161的一端可以抵接在卷针座腔体211的底壁，第一弹性元件161的另一端可以用于向第一调节杆151施力。
在一个实施例中，当第一调节杆151朝着远离卷针座腔体211的方向移动后，第一弹性元件161可以处于拉伸状态，从而第一弹性元件161可以用于拉动第一调节杆151朝着靠近卷针座腔体211的方向移动。在另一个实施例中，当第一调节杆151朝着靠近卷针座腔体211的方向移动后，第一弹性元件161可以处于压缩状态，第一弹性元件161可以用于推动第一调节杆151朝着远离卷针座腔体211的方向移动。
可选地，所述卷针座腔体211的底壁设置有卷针座通孔212，所述第一驱动杆230贯穿所述卷针座通孔212并伸入所述卷针座腔体211；所述卷绕装置10还包括驱动滑块213，所述驱动滑块213容置于所述卷针座腔体211内，所述驱动滑块213与所述第一调节杆151固定连接，且在所述第一方向上相对于所述第一驱动杆230固定，所述第一弹性元件161抵接于所述驱动滑块213和所述卷针座腔体211之间。
第一驱动杆230可以贯穿卷针座通孔212，并从卷针座腔体211的远离第一内针组件11的一侧伸入卷针座腔体211。第一驱动杆230的靠近第一内针组件11的一端可以与卷针座腔体211内的驱动滑块213连接，以在第一方向上相对于第一驱动杆230固定。因此，驱动滑块213可以在第一驱动杆230的带动下沿第一方向移动。
第一弹性元件161的一端与卷针座腔体211的底壁固定连接，第一弹性元件161的另一端与驱动滑块213固定连接。因此，驱动滑块213可以在第一弹性元件161的带动下沿第一方向的相反方向移动。
由于第一调节杆151的远离第一内针组件11的一侧可以固定于驱动滑块213，因此驱动滑块213可以带动第一调节杆151在第一方向上往复移动。也就是说，第一驱动杆230可以通过驱动滑块213驱动第一调节杆151沿第一方向移动，第一弹性元件161可以通过驱动滑块213驱动第一调节杆151沿第一方向的相反方向移动。
如图13所示，驱动滑块213可以内置有销件215，销件215可以插入第一驱动杆230的孔内，以起到限位固定作用，使得第一驱动杆230在第一方向上相对于第一驱动杆230固定。在一个实施例中，销件215的数量可以为多个，多个销件215可以沿第一方向排列。
如图13所示，驱动滑块213可以内置有滚动轴承214，滚动轴承214的外周可以固定于驱动滑块213，滚动轴承214的内周可以与第一驱动杆230固定连接。滚动轴承214的外周和滚动轴承214的内周在第一方向上相对于固定。滚动轴承214的外周可 以相对于滚动轴承214的内周旋转。
在卷绕过程中，卷针座腔体211有可能相对于第一驱动杆230旋转，而第一驱动杆230可能基本不旋转。通过设置滚动轴承214，有利于减少第一驱动杆230和驱动滑块213之间的旋转摩擦量。在一个实施例中，滚动轴承214的数量可以为多个，多个滚动轴承214可以沿第一方向排列。
如图13所示，卷针座腔体211的底壁上还可以设置有驱动滑块213的导轨216，第一弹性元件161可以套设于导轨216的外周，由此有利于减少驱动滑块213偏离第一方向的位移量。
可选地，所述卷绕装置10还包括连接座220，所述连接座220位于所述卷针座腔体211和所述内针支架131之间并覆盖所述卷针座腔体211的开口，所述连接座220包括连接座通孔221，所述第一调节杆151贯穿所述连接座通孔221。
如图2所示，卷绕装置10可以包括连接座220，连接座220可以连接在卷针座腔体211与第一内针组件11之间。如图13所示，连接座220可以包括连接盖板和连接突出部，连接突出部可以由连接盖板朝向第一内针组件11突出。连接盖板可以覆盖卷针座腔体211的开口。连接盖板上可以设置有连接座通孔221。第一调节杆151可以从第一内针组件11伸出，穿过连接座通孔221，并伸入卷针座腔体211，以与卷针座腔体211内的驱动滑块213固定连接。
图14示出了本申请提供的一种连接座220的示意性结构图。在本申请提供的一些实施例中，连接座220上可以设置有盖板193。盖板193可以用于阻挡连接座220和第一内针组件11内的微粒从连接座220流出。
可选地，所述卷绕装置10还包括：第二弹性元件162，所述第二弹性元件162用于向所述第二调节杆152施加沿所述第三方向的相反方向的驱动力。
第二驱动杆240可以向第二调节杆152施加沿所述第三方向的驱动力，以使第二调节杆152可以沿第三方向移动，假设由B位置移动到B’位置。在第二调节杆152由B位置移动到B’位置的过程中，第二弹性元件162可以逐渐被伸长或逐渐压缩。在撤除或减少第二驱动杆240作用在第二调节杆152上的作用力后，由于第二弹性元件162自身的弹性恢复力(恢复力的方向可以为第三方向的相反方向)，使得第二驱动杆240可以在第二弹性元件162的驱动下恢复至初始位置，即从B’位置回归至B位置，以便于进行下一批次的卷绕工艺。
可选地，所述第二弹性元件162的一端固定于所述内针支架131，所述第二弹性元件162的另一端抵接于所述第二调节杆152。
图11和图12示出了第二弹性元件162在第一内针组件11内的示意性结构图。第二调节杆152可以在第二驱动杆240的带动下沿第三方向移动。第二弹性元件162的一端与内针支架131固定连接，第二弹性元件162的另一端与第二调节杆152固定连接。因此，第二调节杆152可以在第二弹性元件162的带动下沿第三方向的相反方向移动。
在一个实施例中，结合图12和图13，第二弹性元件162的靠近卷针座腔体211的一侧固定有弹性元件底座。第二弹性元件162的远离第二调节杆152的一侧可以固定 在弹性元件底座上，以实现第二弹性元件162与内针支架131固定连接。
可选地，所述支撑部135包括支撑部开口1352，所述卷绕装置10还包括第三推块119，所述第三推块119穿过所述支撑部开口1352，与所述第二调节杆152固定连接，所述第三推块119用于向所述第二调节杆152施加沿所述第三方向的驱动力，所述支撑部开口1352在所述第三方向上的内径大于或等于所述第二调节杆152在所述第三方向上的行程。
如图11、图12所示，第三推块119可以包括第三推块主体和第三推块突出部，第三推块突出部可以由第三推块主体向远离第二调节杆152的方向延伸。第三推块突出部的延伸方向可以平行于第二调节杆152的延伸方向。第三推块突出部远离第二调节杆152或第三推块主体的一端可以用于与第二驱动杆240接触。第三推块主体可以穿过支撑部开口1352，并与第二调节杆152固定连接。第三推块主体例如可以通过螺纹紧固件固定在第二调节杆152上。当第三推块119被第二驱动杆240驱动沿第三方向移动时，第二调节杆152可以相应地沿第三方向移动。
支撑部开口1352可以设置在第二调节杆152的沿Y轴方向一侧，也就是说，支撑部开口1352可以与第二调节杆152沿Y轴方向排列。支撑部开口1352在X轴方向的内径大于或等于所述第二调节杆152在所述第三方向上的行程，从而第三推块119可以在支撑部开口1352内沿第三方向的往复移动。
在一些实施例中，第三推块119可以移动至支撑部开口1352的最远离卷针座腔体211的边缘，因此支撑部开口1352至少可以用于限制第三推块119沿X-方向的最远行止位置。
在一个实施例中，支撑部开口1352还可以用于限制第三推块119沿X+方向的最远行止位置。也就是说，支撑部开口1352可以用于限制第三推块119在第三方向的最大行程。
在图11、图12所示的实施例中，内针支架131上可以设置有支架突出部，支架突出部可以由内针支架131的主体朝向支撑部开口1352突出，支撑部开口1352在Y轴方向的投影可以位于支撑部开口1352内。也就是说，第三推块119移动至支架突出部后，第三推块119与支撑部开口1352的边缘可以具有间隙。在此实施例中，支架突出部可以用于限制第三推块119在X+方向的最远行止位置。
可选地，所述支撑部135包括支撑部容纳腔，所述卷绕装置10还包括第四推块，所述第四推块穿过所述支撑部容纳腔，与所述第二调节杆152固定连接，所述第四推块用于向所述第二调节杆152施加沿所述第三方向的相反方向的驱动力，所述支撑部容纳腔在所述第三方向上的内径大于或等于所述第二调节杆152在所述第三方向上的行程。
如图12所示，第四推块可以部分容纳于该支撑部容纳腔内，其余部分可以伸出支撑部容纳腔，并与第二调节杆152固定连接。当第四推块被驱动沿第三方向的相反方向移动时，第二调节杆152可以相应地沿第三方向的相反方向移动。在图12所示的实施例中，第四推块可以由第二弹性连接件驱动以沿第三方向的相反方向移动。第四推块可以位于第二调节杆152和第二弹性元件162之间。
支撑部容纳腔在Y轴方向的内径可以与第四推块在Y轴方向的最大外径匹配。支撑部容纳腔在靠近第二调节杆152的一侧可以具有开口，该开口在Y轴方向的内径可以小于第四推块在Y轴方向的最大外径，以使得第四推块无法完全从支撑部容纳腔移出。支撑部容纳腔在X轴方向的内径可以与第四推块到弹性元件底座之间的距离对应，也就是说，支撑部容纳腔可以用于限制第四推块或第二弹性元件162的远离卷针座腔体211的一侧的最大行程。具体地，支撑部容纳腔在第三方向上的内径可以大于或等于第二调节杆152在所述第三方向上的行程。
如图11所示，第二弹性元件162可以环绕于第一调节杆151外周。由于第一调节杆151和第二调节杆152独立运动。为避免在第二弹性元件162的移动时带动第一调节杆151，第四推块可以具有推块通孔，第一调节杆151可以贯穿推块通孔，并可以在推块通孔内沿第一方向往复移动。在一些实施例中，推块通孔在Y轴方向的内径与大于或等于第一调节杆151在Y轴方向的外径。
在上文所述的实施例中，内针支架131的第一支架腔体132可以用于容置第一推块111。可选地，所述内针支架131还包括与所述第一支架腔体132贯通的第三滑槽136，所述第一推块111的主体1111容置于所述第一支架腔体132内，所述第一推块111还包括第一推块突出部1112，所述第一推块突出部1112在所述第三滑槽136内可沿所述第二方向滑动，所述第一推块突出部1112与所述第三滑槽136之间的滑动间隙小于所述第一推块111的主体1111与所述第一支架腔体132之间的滑动间隙。
第三滑槽136可以位于第一支架腔体132的一侧。第三滑槽136沿第二方向延伸。如图3所示，第三滑槽136相对于Y轴方向平行设置，并可以与第一支架腔体132沿X轴方向排列。第三滑槽136可以与第一支架腔体132贯通以形成连通的腔体。第一推块111的第一推块突出部1112可以由所述第一推块111的主体1111突出，并伸入第三滑槽136内。
在图3所示的实施例中，第三滑槽136在Z轴方向上的内径可以小于第一支架腔体132在Z轴方向上的内径。第三滑槽136例如可以充当第一推块111的导轨，第一推块111推出部例如可以充当第一推块111的导轨配合件。
第一推块突出部1112与第三滑槽136之间的滑动间隙可以指第一推块突出部1112与第三滑槽136的平均间隔距离。第一推块111的主体1111与第一支架腔体132之间的滑动间隙可以指第一推块111的主体1111与第一支架腔体132的平均间隔距离。
由于第一推块突出部1112与第三滑槽136之间的滑动间隙小于第一推块111的主体1111与第一支架腔体132之间的滑动间隙，第一推块111的主体1111与第一支架腔体132之间的滑动摩擦程度可以小于第一推块突出部1112与第三滑槽136之间的滑动摩擦程度。因此，第一推块111的主要摩擦区域可以集中在第一推块突出部1112，有利于减小第一推块111的主体1111所参与的摩擦量。第一推块突出部1112与第三滑槽136的接触面积相对较小，因此第一推块突出部1112与第三滑槽136总体摩擦程度相对较小。
可选地，所述卷绕装置10还包括扣合于所述第一支架腔体132和/或所述第三滑槽136的靠近所述第一外针130的一端的盖板191。
如图3所示，扣合于第一支架腔体132上的盖板191还覆盖在第三滑槽136上。在本申请提供的另一个实施例中，卷绕装置10可以仅设置用于扣合第三滑槽136的盖板191。在本申请提供的又一个实施例中，卷绕装置10可以独立设置用于扣合第一支架腔体132的盖板191和用于扣合第三滑槽136的盖板191。
在卷绕过程中，第一推块111在第一支架腔体132和第三滑槽136内移动，因此第一推块111和第一支架腔体132之间可以发生滑动摩擦，第一推块111和第三滑槽136之间可以发生滑动摩擦，进而产生微粒。微粒可能会掉落在电极组件20上，从而可能戳破电极组件20被微粒，进而降低电极组件20的成品率。通过在第一支架腔体132和/或第三滑槽136的靠近所述第一外针130的一端扣合盖板191，有利于减少微粒掉出第一推块111和第一支架腔体132之间和/或第一推块111和第三滑槽136之间的缝隙的可能性。
在上文所述的实施例中，内针支架131的第二支架腔体133可以用于容置第二推块114。可选地，所述内针支架131还包括与所述第二支架腔体133贯通的第四滑槽137，所述第二推块114的主体1141容置于所述第二支架腔体133内，所述第二推块114还包括第二推块突出部1142，所述第二推块突出部1142在所述第四滑槽137内可沿所述第四方向滑动，所述第二推块突出部1142与所述第四滑槽137之间的滑动间隙小于所述第二推块114的主体1141与所述第二支架腔体133之间的滑动间隙。
第四滑槽137可以位于第二支架腔体133的一侧。第四滑槽137沿第四方向延伸。如图3所示，第四滑槽137相对于Y轴方向平行设置，并可以与第二支架腔体133沿X轴方向排列。第四滑槽137可以与第二支架腔体133贯通以形成连通的腔体。第二推块114的第二推块突出部1142可以由所述第二推块114的主体1141突出，并伸入第四滑槽137内。
在图3所示的实施例中，第四滑槽137在Z轴方向上的内径可以小于第二支架腔体133在Z轴方向上的内径。第四滑槽137例如可以充当第二推块114的导轨，第二推块114推出部例如可以充当第二推块114的导轨配合件。
第二推块突出部1142与第四滑槽137之间的滑动间隙可以指第二推块突出部1142与第四滑槽137的平均间隔距离。第二推块114的主体1141与第二支架腔体133之间的滑动间隙可以指第二推块114的主体1141与第二支架腔体133的平均间隔距离。
由于第二推块突出部1142与第四滑槽137之间的滑动间隙小于第二推块114的主体1141与第二支架腔体133之间的滑动间隙，因此第二推块114的主体1141与第二支架腔体133之间的滑动摩擦程度可以小于第二推块突出部1142与第四滑槽137之间的滑动摩擦程度。因此，第二推块114的主要摩擦区域可以集中在第二推块突出部1142，有利于减小第二推块114的主体1141所参与的摩擦量。第二推块突出部1142与第四滑槽137的接触面积相对较小，因此第二推块突出部1142与第四滑槽137总体摩擦程度相对较小。
可选地，所述卷绕装置10还包括扣合于所述第四滑槽137的靠近所述第一外针130的一端的盖板191。
在卷绕过程中，第二推块突出部1142在第四滑槽137内移动，因此第二推 块突出部1142和第四滑槽137之间可以发生滑动摩擦，进而产生微粒。微粒可能会掉落在电极组件20上，从而可能戳破电极组件20被微粒，进而降低电极组件20的成品率。通过在第四滑槽137的靠近所述第一外针130的一端扣合盖板191，有利于减少第二推块突出部1142和第四滑槽137之间所产生的微粒掉出第二推块突出部1142和第四滑槽137之间的缝隙的可能性。
可选地，所述第一滑槽113的远离所述第一滑块112的开口扣合有盖板191；和/或，所述第二滑槽116的远离所述第二滑块115的开口扣合有盖板191；和/或，所述内针支架131包括第一滑槽开口138，所述第一滑槽开口138与所述第一推块111上的第一滑槽113相对设置，所述第一滑块112开口上扣合有盖板191；和/或，所述内针支架131包括第二滑槽开口139，所述第二滑槽开口139与所述第二推块114上的第二滑槽116相对设置，所述第二滑块115开口上扣合有盖板191。
结合图3至图9，第一推块111内产生的微粒可能通过第一滑槽113流出。通过在第一滑槽113的远离所述第一滑块112的开口扣合有盖板191，有利于减少通过第一滑槽113的微粒量。
结合图3至图9，第二推块114内产生的微粒可能通过第二滑槽116流出。通过在第二滑槽116的远离所述第二滑块115的开口扣合有盖板191，有利于减少通过第二滑槽116的微粒量。
结合图3至图9，为便于从内针支架131的外侧观察或控制第一滑块112的移动，内针支架131包括第一滑槽开口138，所述第一滑槽开口138与所述第一推块111上的第一滑槽113相对设置。由于第一推块111可以设置在内针支架131内，第一推块111可以与内针支架131相对滑动，所产生的微粒可能通过第一滑槽开口138流出。通过在第一滑槽开口138上扣合有盖板191，有利于减少通过第一滑槽开口138的微粒量。
结合图3至图9，由于第二推块114可以设置在内针支架131内，第二推块114可以与内针支架131相对滑动，所产生的微粒可能通过第二滑槽开口139流出。通过在第二滑槽开口139上扣合有盖板191，有利于减少通过第二滑槽开口139的微粒量。
可选地，所述卷绕装置10还包括：磁吸部件194，所述磁吸部件194设置于所述内针支架131，所述磁吸部件194用于吸附所述内针支架131内的微粒。
结合上文可知，在卷绕过程中，卷绕装置10内的多个部件可以相对移动，进而可能因相互摩擦而产生微粒。如果微粒会掉落在电极组件20上，则可能戳破电极组件20被微粒，进而降低电极组件20的成品率。至少部分微粒可以具有磁吸性，通过在内针支架131设置磁吸部件194，使得磁吸部件194可以在微粒可能经过的路径周围对微粒进行吸附，从而减少微粒掉落在电极组件20的可能性。
可选地，所述磁吸部件194设置在以下位置中的至少一个：所述第一内针110的面向所述第一推块111的一侧；所述第一推块111的面向所述第一内针110的一侧；所述第二推块114的面向所述内针支架131的一侧；所述内针支架131的面向所述第二推块114的一侧；所述内针支架131的靠近所述第一滑槽113的位置；所述内针支架131的靠近所述第二滑槽116的位置；所述内针支架131的靠近所述第一内针110的一侧；所述第一内针110的靠近所述内针支架131的一侧。
图15是本申请提供的一种第一内针110的示意性结构图。
结合图3至图9和图15，内针支架131内的微粒可能会经过第一推块111和第一内针110之间的缝隙流出内针支架131。通过在第一内针110的面向所述第一推块111的一侧，和/或，在第一推块111的面向第一内针110的一侧设置磁吸部件194，有利于减少通过第一推块111和第一内针110之间的缝隙流出内针支架131的微粒量。
图16和图17是本申请提供的一种内针支架135的示意性结构图。
结合图3至图9和图16，由于第二推块114可以在内针支架131的第二支架腔体133内移动，因此内针支架131内的微粒可能会经过第二推块114和内针支架131之间的缝隙流出内针支架131。通过在内针支架131的面向所述第二推块114的一侧，和/或，在第二推块114的面向内针支架131的一侧设置磁吸部件194，有利于减少通过第二推块114和内针支架131之间的缝隙流出内针支架131的微粒量。
结合图3至图9，由于第一推块111内的微粒可能通过第一滑槽113流出第一推块111。通过在内针支架131的靠近所述第一滑槽113的一侧设置磁吸部件194，有利于减少通过第一推块111和内针支架131之间的缝隙流出内针支架131的微粒量。
结合图3至图9和图16，由于第二推块114内的微粒可能通过第二滑槽116流出第二推块114。通过在内针支架131的靠近所述第二滑槽116的一侧设置磁吸部件194，有利于减少来自第二推块114内的微粒进一步流出内针支架131的微粒量。
结合图3至图9和图17，由于内针支架131内的微粒可能会经过内针支架131和第一内针110之间的缝隙流出内针支架131。通过在第一内针110的靠近所述内针支架131的一侧，和/或，在内针支架131的靠近第一内针110的一侧设置磁吸部件194，有利于减少通过内针支架131和第一内针110之间的缝隙流出内针支架131的微粒量。
可选地，所述磁吸部件194上可以扣合磁吸盖板195。通过设置磁吸盖板195，有利于阻挡由磁吸部件194掉落的微粒量掉落在电极组件20上。
如图15所示，在第一内针110的面向所述第一推块111的一侧可以设置磁吸部件194，在磁吸部件194的远离第一内针110的一侧可以设置有磁吸盖板195。
如图16所示，在内针支架131的面向所述第二推块114的一侧可以设置磁吸部件194，在磁吸部件194的远离内针支架131的一侧可以设置有磁吸盖板195。
如图16所示，在内针支架131的靠近所述第二滑槽116的一侧可以设置磁吸部件194，在磁吸部件194的远离内针支架131的一侧可以设置有磁吸盖板195。
如图17所示，在内针支架131的靠近所述第一内针110的一侧可以设置磁吸部件194，在磁吸部件194的远离内针支架131的一侧可以设置有磁吸盖板195。
图18示出了本申请实施例提供的一种极耳错位的调整方法的示意图。
通过检测感应器，检测指定极耳的卷绕角度，并和标准角度进行对比，实时计算出极耳错位量，从而实时自动在线检测多极耳电芯极耳错位量大小、极耳错位方向。
假设从内往外第n个极耳极耳错位量为X n，第n个极耳卷绕角度为θ n，第n个极耳卷绕标准角度为θ n',卷针周长为C，卷绕电芯层厚度为T，则第n个极耳极耳错位量
Figure PCTCN2022072826-appb-000001
卷针周长调节量ΔL算法：上一电芯极耳错位量X＝X n，卷绕电芯圈数N，极耳错位调整系数K(0.2<K<1)则ΔL＝KX/N。
由此可以实现卷针周长的自动调节，避免手动斯贴铁氟龙来调整卷针周长大小，以及避免卷针周长调整不及时的问题，从而减少设备极耳错位的优率损失，提高卷绕设备稼动率。
本申请实施例提供一种卷绕装置和卷绕设备，具有独立调整内针周长和外针周长的特点。该卷绕装置和卷绕设备可以应用于电极组件的卷绕生产场景。另外，通过设置盖板、磁吸部件和磁吸盖板，有利于减少卷绕装置内的微粒掉落在电极组件上，提高电极组件的生产质量。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (26)

  1. 一种卷绕装置，其特征在于，包括：
    相对设置的第一内针和第二内针，用于夹紧电极组件；
    相对设置的第一外针和第二外针，所述第一外针和所述第二外针的外周用于卷绕所述电极组件；
    所述卷绕装置还包括第一滑块和第一推块，所述第一推块与所述第一内针固定连接，所述第一推块上设置有第一滑槽，所述第一滑块在所述第一滑槽内可移动，所述第一滑块被配置沿第一方向往复移动，所述第一滑槽的延伸方向倾斜于所述第一方向，以使所述第一推块带动所述第一内针沿第二方向往复移动，以夹紧或松开所述电极组件，所述第二方向垂直于所述第一方向；
    所述卷绕装置还包括第二滑块和第二推块，所述第二推块与所述第一外针固定连接，所述第二推块上设置有第二滑槽，所述第二滑块在所述第二滑槽内可移动，所述第二滑块被配置沿第三方向往复移动，所述第二滑槽的延伸方向倾斜于所述第三方向，以使所述第二推块带动所述第一外针沿第四方向往复移动，以扩大或缩小所述第一外针和所述第二外针之间的间距，所述第三方向平行于所述第一方向，所述第四方向垂直于所述第三方向。
  2. 根据权利要求1所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    第一调节杆，相对于所述第一方向平行设置，所述第一调节杆与所述第一滑块固定连接，所述第一调节杆被配置沿所述第一方向往复移动以带动所述第一滑块沿所述第一方向往复移动；
    第二调节杆，相对于所述第三方向平行设置，所述第二调节杆与所述第二滑块固定连接，所述第二调节杆被配置沿所述第三方向往复移动以带动所述第二滑块沿所述第三方向往复移动。
  3. 根据权利要求2所述的卷绕装置，其特征在于，所述第二调节杆和所述第二滑块通过第一连接轴固定连接，所述第一调节杆包括第一调节杆通孔，所述第一连接轴贯穿所述第一调节杆通孔，并在所述第一调节杆通孔内可沿所述第三方向往复移动。
  4. 根据权利要求3所述的卷绕装置，其特征在于，所述第一调节杆通孔沿所述第三方向的尺寸大于或等于所述第二滑块沿所述第三方向的移动行程。
  5. 根据权利要求2至4中任一项所述的卷绕装置，其特征在于，所述第一调节杆和所述第一滑块通过第二连接轴固定连接，所述第二调节杆包括第二调节杆通孔，所述第二连接轴贯穿所述第二调节杆通孔，并在所述第二调节杆通孔内可沿所述第一方向往复移动。
  6. 根据权利要求5所述的卷绕装置，其特征在于，所述第二调节杆通孔沿所述第一方向的尺寸大于或等于所述第一滑块沿所述第一方向的移动行程。
  7. 根据权利要求2至6中任一项所述的卷绕装置，其特征在于，所述第二调节杆的一端设置有调节杆突出部，所述调节杆突出部沿垂直于所述第一方向，朝向所述第一调节杆突出。
  8. 根据权利要求2至7中任一项所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    内针支架，所述内针支架用于容置所述第一内针、所述第一滑块、所述第一推块、所述第二滑块、所述第二推块，
    其中，所述内针支架具有第一支架腔体和第二支架腔体，所述第一支架腔体用于容置所述第一推块，所述第二支架腔体的开口朝向所述第一外针，所述第二支架腔体用于容置所述第二推块。
  9. 根据权利要求8所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    第一驱动杆，所述第一驱动杆用于向所述第一调节杆施加沿所述第一方向的驱动力；
    第二驱动杆，所述第二驱动杆用于向所述第二调节杆施加沿所述第三方向的驱动力；
    其中，所述第一驱动杆和所述第二驱动杆位于所述内针支架的两侧。
  10. 根据权利要求9所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    第一弹性元件，所述第一弹性元件用于向所述第一调节杆施加沿所述第一方向的相反方向的驱动力；
    第二弹性元件，所述第二弹性元件用于向所述第二调节杆施加沿所述第三方向的相反方向的驱动力。
  11. 根据权利要求9或10所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    卷针座，所述卷针座具有开口朝向所述内针支架的卷针座腔体，所述第一调节杆伸入所述卷针座腔体，所述第一弹性元件抵接于所述卷针座腔体的底壁。
  12. 根据权利要求11所述的卷绕装置，其特征在于，所述卷针座腔体的底壁设置有卷针座通孔，所述第一驱动杆贯穿所述卷针座通孔并伸入所述卷针座腔体；
    所述卷绕装置还包括驱动滑块，所述驱动滑块容置于所述卷针座腔体内，所述驱动滑块与所述第一调节杆固定连接，且在所述第一方向上相对于所述第一驱动杆固定，所述第一弹性元件抵接于所述驱动滑块和所述卷针座之间。
  13. 根据权利要求11或12所述的卷绕装置，其特征在于，所述卷绕装置还包括连接座，所述连接座位于所述卷针座和所述内针支架之间并覆盖所述卷针座腔体的开口，所述连接座包括连接座通孔，所述第一调节杆贯穿所述连接座通孔。
  14. 根据权利要求10至13中任一项所述的卷绕装置，其特征在于，所述第二弹性元件的一端固定于所述内针支架，所述第二弹性元件的另一端抵接于所述第二调节杆。
  15. 根据权利要求8至14中任一项所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    支撑部，所述支撑部容置于所述内针支架内，所述支撑部设置有所述第一调节杆和所述第二调节杆的移动凹槽。
  16. 根据权利要求15所述的卷绕装置，其特征在于，所述支撑部包括支撑部开口，所述卷绕装置还包括第三推块，所述第三推块穿过所述支撑部开口，与所述第二调节杆固定连接，所述第三推块用于向所述第二调节杆施加沿所述第三方向的驱动力，所述支撑部开口在所述第三方向上的内径大于或等于所述第二调节杆在所述第三方向上的行程。
  17. 根据权利要求8至16中任一项所述的卷绕装置，其特征在于，所述内针支架还包括与所述第一支架腔体贯通的第三滑槽，所述第一推块的主体容置于所述第一支架腔体内，所述第一推块还包括第一推块突出部，所述第一推块突出部在所述第三滑槽内可沿所述第二方向滑动，所述第一推块突出部与所述第三滑槽之间的滑动间隙小于所述第一推块的主体与所述第一支架腔体之间的滑动间隙。
  18. 根据权利要求17所述的卷绕装置，其特征在于，所述卷绕装置还包括扣合于所述第一支架腔体和/或所述第三滑槽的靠近所述第一外针的一端的盖板。
  19. 根据权利要求8至18中任一项所述的卷绕装置，其特征在于，所述内针支架还包括与所述第二支架腔体贯通的第四滑槽，所述第二推块的主体容置于所述第二支架腔体内，所述第二推块还包括第二推块突出部，所述第二推块突出部在所述第四滑槽内可沿所述第四方向滑动，所述第二推块突出部与所述第四滑槽之间的滑动间隙小于所述第二推块的主体与所述第二支架腔体之间的滑动间隙。
  20. 根据权利要求19所述的卷绕装置，其特征在于，所述卷绕装置还包括扣合于所述第四滑槽的靠近所述第一外针的一端的盖板。
  21. 根据权利要求8至20中任一项所述的卷绕装置，其特征在于，
    所述第一滑槽的远离所述第一滑块的开口扣合有盖板；和/或，
    所述第二滑槽的远离所述第二滑块的开口扣合有盖板；和/或，
    所述内针支架包括第一滑槽开口，所述第一滑槽开口与所述第一推块上的第一滑槽相对设置，所述第一滑块开口上扣合有盖板；和/或，
    所述内针支架包括第二滑槽开口，所述第二滑槽开口与所述第二推块上的第二滑槽相对设置，所述第二滑块开口上扣合有盖板。
  22. 根据权利要求8至21中任一项所述的卷绕装置，其特征在于，所述卷绕装置还包括：
    螺纹紧固件，所述第一内针和所述第一推动块通过所述螺纹紧固件固定连接，所述内针支架包括锁紧开口，所述锁紧开口与所述螺纹紧固件相对设置，所述锁紧开口上扣合有盖板。
  23. 根据权利要求8至22中任一项所述的卷绕装置，其特征在于，所述卷绕装置还包括：磁吸部件，所述磁吸部件设置于所述内针支架，所述磁吸部件用于吸附所述内针支架内的微粒。
  24. 根据权利要求23所述的卷绕装置，其特征在于，所述卷绕装置包括至少一个所述磁吸部件，所述至少一个所述磁吸部件设置在以下位置中的至少一个：
    所述第一内针的面向所述第一推块的一侧；
    所述第一推块的面向所述第一内针的一侧；
    所述第二推块的面向所述内针支架的一侧；
    所述内针支架的面向所述第二推块的一侧；
    所述内针支架的靠近所述第一滑槽的位置；
    所述内针支架的靠近所述第二滑槽的位置；
    所述内针支架的靠近所述第一内针的一侧；
    所述第一内针的靠近所述内针支架的一侧。
  25. 根据权利要求1至24中任一项所述的卷绕装置，其特征在于，所述第一方向和所述第三方向方向相同，沿所述第一方向，所述第一滑槽背离所述第二内针延伸，所述第二滑槽靠近所述第二内针延伸。
  26. 一种卷绕设备，其特征在于，所述卷绕设备包括：
    如权利要求1至25中任一项所述的卷绕装置；
    驱动装置，所述驱动装置用于驱动所述卷绕装置。
PCT/CN2022/072826 2022-01-19 2022-01-19 卷绕装置和卷绕设备 WO2023137639A1 (zh)

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CN201450080U (zh) * 2009-06-17 2010-05-05 珠海华冠电子科技有限公司 卷针结构
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